Resource allocation method, device and system of wireless communication system
Abstract
Disclosed are a terminal of a wireless communication system and a wireless communication method using the same. More specifically, the method comprising: receiving scheduling information including resource allocation information, wherein the resource allocation information includes an RIV determined based on the number of RBs of a first BWP; and transmitting or receiving the data on the RB set corresponding to the RIV in a second BWP, wherein when the number of RBs in the second BWP is greater than the number of RBs in the first BWP, the second BWP Disclosed are a method in which a start RB index S and the number of RBs L of a RB set corresponding to RIV are given in units of powers of two and an apparatus therefor.

Term
12.3 yearsto projected expiry
Projected expiry 14 January 2039, counted from filing; an application has no term until it is granted.
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20 claims: 4 independent, 16 dependent
- 1무선 통신 시스템에서 단말에 의해 수행되는 방법에 있어서, 자원 할당 정보를 포함하는 스케줄링 정보를 수신하는 단계로서, 상기 자원 할당 정보는 제1 BWP(Bandwidth Part)의 RB(Resource Block) 개수를 기준으로 결정된 RIV(Resource Indication Value)를 포함하고; 및 제2 BWP에서 상기 RIV에 대응되는 RB 세트 상에서 데이터를 전송 또는 수신하는 단계를 포함하되, 상기 제2 BWP의 RB 개수가 상기 제1 BWP의 RB 개수보다 많은 경우, 상기 제2 BWP에서 상기 RIV에 대응되는 RB 세트의 시작 RB 인덱스 S와 RB 개수 L은 각각 다음 중 하나의 값을 가지는 방법:- 시작 RB 인덱스 S: {0, K, 2*K, ..., (N BWP1 -1)*K}, 및 - RB 개수 L: {K, 2*K, 3*K, ..., N BWP1 *K} 여기서, N BWP1 는 상기 제1 BWP의 RB 개수이고, K는 2의 거듭제곱 값으로써 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)에 기반하여 결정된다.
- 2제1항에 있어서, 상기 제1 BWP와 상기 제2 BWP는 다음 중 하나를 포함하는 방법:- (제1 BWP, 제2 BWP) = (초기(initial) BWP, 활성(active) BWP), 및 - (제1 BWP, 제2 BWP) = (현재 활성화된 BWP, 새롭게 활성화될 BWP), 여기서, 상기 현재 활성화된 BWP는 상기 스케줄링 정보가 수신된 시점의 활성 BWP이고, 상기 새롭게 활성화될 BWP는 상기 스케줄링 정보 내의 BPI(Bandwidth part indicator)에 의해 지시된 BWP이다.
- 3제1항에 있어서, K는 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)에 따라 하기 값을 갖는 방법:여기서, X는 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)이고, n은 0 이상의 정수이다.
- 4제1항에 있어서, 상기 RIV는 하기 식을 만족하는 값을 가지는 방법:- RIV = N BWP1 *(L'-1)+S', if (L'-1)≤floor(N BWP1 /2), 및 - RIV = N BWP1 *(N BWP1 -L'+1)+(N BWP1 -1-S'), if (L'-1)>floor(N BWP1 /2), 여기서, L'은 L/K로서 1≤L'≤N BWP1 -S'의 값을 가지며, S'는 S/K이다.
- 5제1항에 있어서, 상기 제2 BWP의 RB 개수가 상기 제1 BWP의 RB 개수와 같거나 적은 경우, 상기 제2 BWP에서 상기 RIV에 대응되는 RB 세트의 시작 RB 인덱스 S와 RB 개수 L은 각각 다음 중 하나의 값으로 주어지는 방법:- 시작 RB 인덱스 S: {0, 1, 2, ..., N BWP2 -1}, 및 - RB 개수 L: {1, 2, 3, ..., N BWP2 }, 여기서, N BWP2 는 상기 제2 BWP의 RB 개수이다.
- 6무선 통신 시스템에서 기지국에 의해 수행되는 방법에 있어서, 자원 할당 정보를 포함하는 스케줄링 정보를 전송하는 단계로서, 상기 자원 할당 정보는 제1 BWP(Bandwidth Part)의 RB(Resource Block) 개수를 기준으로 결정된 RIV(Resource Indication Value)를 포함하고; 및 제2 BWP에서 상기 RIV에 대응되는 RB 세트 상에서 데이터를 전송 또는 수신하는 단계를 포함하되, 상기 제2 BWP의 RB 개수가 상기 제1 BWP의 RB 개수보다 많은 경우, 상기 제2 BWP에서 상기 RIV에 대응되는 RB 세트의 시작 RB 인덱스 S와 RB 개수 L은 각각 다음 중 하나의 값을 가지는 방법:- 시작 RB 인덱스 S: {0, K, 2*K, ..., (N BWP1 -1)*K}, 및 - RB 개수 L: {K, 2*K, 3*K, ..., N BWP1 *K} 여기서, N BWP1 는 상기 제1 BWP의 RB 개수이고, K는 2의 거듭제곱 값으로써 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)에 기반하여 결정된다.
- 7제6항에 있어서, 상기 제1 BWP와 상기 제2 BWP는 다음 중 하나를 포함하는 방법:- (제1 BWP, 제2 BWP) = (초기(initial) BWP, 활성(active) BWP), 및 - (제1 BWP, 제2 BWP) = (현재 활성화된 BWP, 새롭게 활성화될 BWP), 여기서, 상기 현재 활성화된 BWP는 상기 스케줄링 정보가 수신된 시점의 활성 BWP이고, 상기 새롭게 활성화될 BWP는 상기 스케줄링 정보 내의 BPI(Bandwidth part indicator)에 의해 지시된 BWP이다.
- 8제6항에 있어서, K는 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)에 따라 하기 값을 갖는 방법:여기서, X는 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)이고, n은 0 이상의 정수이다.
- 9제6항에 있어서, 상기 RIV는 하기 식을 만족하는 값을 가지는 방법:- RIV = N BWP1 *(L'-1)+S', if (L'-1)≤floor(N BWP1 /2), 및 - RIV = N BWP1 *(N BWP1 -L'+1)+(N BWP1 -1-S'), if (L'-1)>floor(N BWP1 /2), 여기서, L'은 L/K로서 1≤L'≤N BWP1 -S'의 값을 가지며, S'는 S/K이다.
- 10제6항에 있어서, 상기 제2 BWP의 RB 개수가 상기 제1 BWP의 RB 개수와 같거나 적은 경우, 상기 제2 BWP에서 상기 RIV에 대응되는 RB 세트의 시작 RB 인덱스 S와 RB 개수 L은 각각 다음 중 하나의 값으로 주어지는 방법:- 시작 RB 인덱스 S: {0, 1, 2, ..., N BWP2 -1}, 및 - RB 개수 L: {1, 2, 3, ..., N BWP2 }, 여기서, N BWP2 는 상기 제2 BWP의 RB 개수이다.
- 11무선 통신 시스템에 사용되는 장치에 있어서, 메모리; 및 프로세서를 포함하고, 상기 프로세서는, 자원 할당 정보를 포함하는 스케줄링 정보를 수신하되, 상기 자원 할당 정보는 제1 BWP(Bandwidth Part)의 RB(Resource Block) 개수를 기준으로 결정된 RIV(Resource Indication Value)를 포함하고, 및 제2 BWP에서 상기 RIV에 대응되는 RB 세트 상에서 데이터를 전송 또는 수신하도록 구성되며, 상기 제2 BWP의 RB 개수가 상기 제1 BWP의 RB 개수보다 많은 경우, 상기 제2 BWP에서 상기 RIV에 대응되는 RB 세트의 시작 RB 인덱스 S와 RB 개수 L은 각각 다음 중 하나의 값을 가지는 장치:- 시작 RB 인덱스 S: {0, K, 2*K, ..., (N BWP1 -1)*K}, 및 - RB 개수 L: {K, 2*K, 3*K, ..., N BWP1 *K} 여기서, N BWP1 는 상기 제1 BWP의 RB 개수이고, K는 2의 거듭제곱 값으로써 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)에 기반하여 결정된다.
- 12제11항에 있어서, 상기 제1 BWP와 상기 제2 BWP는 다음 중 하나를 포함하는 장치:- (제1 BWP, 제2 BWP) = (초기(initial) BWP, 활성(active) BWP), 및 - (제1 BWP, 제2 BWP) = (현재 활성화된 BWP, 새롭게 활성화될 BWP) 여기서, 상기 현재 활성화된 BWP는 상기 스케줄링 정보가 전송된 시점의 활성 BWP이고, 상기 새로 활성화될 BWP는 상기 스케줄링 정보 내의 BPI(Bandwidth part indicator)에 의해 지시된 BWP이다.
- 13제11항에 있어서, K는 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)에 따라 하기 값을 갖는 장치:여기서, X는 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)이고, n은 0 이상의 정수이다.
- 14제11항에 있어서, 상기 RIV는 하기 식을 만족하는 값을 가지는 장치:- RIV = N BWP1 *(L'-1)+S', if (L'-1)≤floor(N BWP1 /2), 및 - RIV = N BWP1 *(N BWP1 -L'+1)+(N BWP1 -1-S'), if (L'-1)>floor(N BWP1 /2), 여기서, L'은 L/K로서 1≤L'≤N BWP1 -S'의 값을 가지며, S'는 S/K이다.
- 15제11항에 있어서, 상기 제2 BWP의 RB 개수가 상기 제1 BWP의 RB 개수와 같거나 적은 경우, 상기 제2 BWP에서 상기 RIV에 대응되는 RB 세트의 시작 RB 인덱스 S와 RB 개수 L은 각각 다음 중 하나의 값으로 주어지는 장치:- 시작 RB 인덱스 S: {0, 1, 2, ..., N BWP2 -1}, 및 - RB 개수 L: {1, 2, 3, ..., N BWP2 }, 여기서, N BWP2 는 상기 제2 BWP의 RB 개수이다.
- 16무선 통신 시스템에 사용되는 장치에 있어서, 메모리; 및 프로세서를 포함하고, 상기 프로세서는, 자원 할당 정보를 포함하는 스케줄링 정보를 전송하되, 상기 자원 할당 정보는 제1 BWP(Bandwidth Part)의 RB(Resource Block) 개수를 기준으로 결정된 RIV(Resource Indication Value)를 포함하고, 및 제2 BWP에서 상기 RIV에 대응되는 RB 세트 상에서 데이터를 전송 또는 수신하도록 구성되며, 상기 제2 BWP의 RB 개수가 상기 제1 BWP의 RB 개수보다 많은 경우, 상기 제2 BWP에서 상기 RIV에 대응되는 RB 세트의 시작 RB 인덱스 S와 RB 개수 L은 각각 다음 중 하나의 값을 가지는 장치:- 시작 RB 인덱스 S: {0, K, 2*K, ..., (N BWP1 -1)*K}, 및 - RB 개수 L: {K, 2*K, 3*K, ..., N BWP1 *K} 여기서, N BWP1 는 상기 제1 BWP의 RB 개수이고, K는 2의 거듭제곱 값으로써 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)에 기반하여 결정된다.
- 17제16항에 있어서, 상기 제1 BWP와 상기 제2 BWP는 다음 중 하나를 포함하는 장치:- (제1 BWP, 제2 BWP) = (초기(initial) BWP, 활성(active) BWP), 및 - (제1 BWP, 제2 BWP) = (현재 활성화된 BWP, 새롭게 활성화될 BWP) 여기서, 상기 현재 활성화된 BWP는 상기 스케줄링 정보가 전송된 시점의 활성 BWP이고, 새로 활성화될 BWP는 상기 스케줄링 정보 내의 BPI(Bandwidth part indicator)에 의해 지시된 BWP이다.
- 18제16항에 있어서, K는 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)에 따라 하기 값을 갖는 장치:여기서, X는 (제2 BWP의 RB 개수/제1 BWP의 RB 개수)이고, n은 0 이상의 정수이다.
- 19제16항에 있어서, 상기 RIV는 하기 식을 만족하는 값을 가지는 장치:- RIV = N BWP1 *(L'-1)+S', if (L'-1)≤floor(N BWP1 /2), 및 - RIV = N BWP1 *(N BWP1 -L'+1)+(N BWP1 -1-S'), if (L'-1)>floor(N BWP1 /2), 여기서, L'은 L/K로서 1≤L'≤N BWP1 -S'의 값을 가지며, S'는 S/K이다.
- 20제16항에 있어서, 상기 제2 BWP의 RB 개수가 상기 제1 BWP의 RB 개수와 같거나 적은 경우, 상기 제2 BWP에서 상기 RIV에 대응되는 RB 세트의 시작 RB 인덱스 S와 RB 개수 L은 각각 다음 중 하나의 값으로 주어지는 장치:- 시작 RB 인덱스 S: {0, 1, 2, ..., N BWP2 -1}, 및 - RB 개수 L: {1, 2, 3, ..., N BWP2 }, 여기서, N BWP2 는 상기 제2 BWP의 RB 개수이다.
Independent claims20
286 paragraphs, as filed
Resource allocation method, apparatus and system of wireless communication system
The present invention relates to a wireless communication system. Specifically, the present invention relates to a wireless communication method, apparatus, and system for transmitting and receiving a data channel and a control channel.
After the commercialization of the 4G (4th generation) communication system, efforts are being made to develop a new 5G (5th generation) communication system in order to meet the increasing demand for wireless data traffic. 5G communication system is called a 4G network after (beyond 4G network) communication system, LTE system after (post LTE) system or NR (new radio) system. In order to achieve a high data rate, the 5G communication system includes a system operated using an ultra-high frequency (mmWave) band of 6 GHz or higher, and a communication system operated using a frequency band of 6 GHz or less in terms of securing coverage Implementation in the base station and the terminal, including
The 3rd generation partnership project (3GPP) NR system improves the spectral efficiency of the network, enabling carriers to provide more data and voice services in a given bandwidth. Therefore, the 3GPP NR system is designed to meet the demand for high-speed data and media transmission in addition to high-capacity voice support. The advantages of NR systems are that they can have low operating costs with high throughput, low latency, frequency division duplex (FDD) and time division duplex (TDD) support, improved end-user experience and simple architecture on the same platform.
For more efficient data processing, dynamic TDD of the NR system may use a method of varying the number of orthogonal frequency division multiplexing (OFDM) symbols that can be used for uplink and downlink according to the data traffic direction of users of the cell. For example, when the downlink traffic of the cell is more than the uplink traffic, the base station may allocate a plurality of downlink OFDM symbols to a slot (or subframe). Information on the slot configuration should be transmitted to the terminals.
In order to alleviate the path loss of radio waves and increase the propagation distance of radio waves in the ultra-high frequency band, in the 5G communication system, beamforming, massive MIMO, full dimensional MIMO, FD-MIMO ), an array antenna, analog beam-forming, hybrid beamforming that combines analog beamforming and digital beamforming, and large scale antenna technologies are being discussed. In addition, to improve the network of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud radio access network: cloud RAN), an ultra-dense network (ultra-dense network) , device to device communication (D2D), vehicle to everything communication (V2X), wireless backhaul, non-terrestrial network communication (NTN), mobile network (moving network), cooperative communication (cooperative communication), CoMP (coordinated multi-points), and technology development related to reception interference cancellation (interference cancellation) and the like are being made. In addition, in the 5G system, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC), which are advanced coding modulation (ACM) methods, and filter bank multi-carrier (FBMC), which is an advanced access technology, Non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) are being developed.
On the other hand, the Internet is evolving from a human-centered connection network where humans create and consume information to an Internet of Things (IoT) network that exchanges and processes information between distributed components such as objects. Internet of Everything (IoE) technology, which combines big data processing technology through connection with cloud servers, etc. with IoT technology, is also emerging. In order to implement IoT, technology elements such as sensing technology, wired and wireless communication and network infrastructure, service interface technology, and security technology are required, and recently, sensor networks for connection between objects, machine to machine (M2M), Technologies such as MTC (machine type communication) are being studied. In the IoT environment, an intelligent Internet technology (IT) service that creates new value in human life by collecting and analyzing data generated from connected objects can be provided. IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliance, advanced medical service, etc. can be applied to
Accordingly, various attempts are being made to apply the 5G communication system to the IoT network. For example, technologies such as sensor network, machine to machine (M2M), and machine type communication (MTC) are being implemented by 5G communication technologies such as beamforming, MIMO, and array antenna. The application of a cloud radio access network (cloud RAN) as the big data processing technology described above can also be said to be an example of the convergence of 5G technology and IoT technology. In general, a mobile communication system has been developed to provide a voice service while ensuring user activity.
However, the mobile communication system is gradually expanding its scope not only to voice but also to data services, and has now developed to the extent that it can provide high-speed data services. However, in a mobile communication system in which a service is currently provided, a more advanced mobile communication system is required due to a shortage of resources and users' demand for high-speed service.
<p>SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for efficiently transmitting and receiving signals in a wireless communication system, in particular, a cellular wireless communication system.</p>
<p>In order to solve the above problems, an apparatus and a wireless communication method of the following wireless communication system are provided.</p><p>In a first aspect of the present invention, in a method performed by a terminal in a wireless communication system, receiving scheduling information including resource allocation information, the resource allocation information is a RB (Bandwidth Part) of a first BWP (Bandwidth Part). includes a Resource Indication Value (RIV) determined based on the number of Resource Blocks; and transmitting or receiving data on an RB set corresponding to the RIV in a second BWP, wherein when the number of RBs in the second BWP is greater than the number of RBs in the first BWP, the RIV in the second BWP A method is provided in which each of the starting RB index S and the number of RBs L of the RB set corresponding to the RB set has one of the following values:</p><p>- Start RB index S: {0, K, 2*K, ..., (N<sub>BWP1</sub>-1)*K}, and</p><p>- Number of RBs L: {K, 2*K, 3*K, ..., N<sub>BWP1</sub>*K}</p><p>where, N<sub>BWP1</sub>is the number of RBs of the first BWP, and K is a power of 2 and is determined based on (the number of RBs of the second BWP/the number of RBs of the first BWP).</p><p>In a second aspect of the present invention, in a method performed by a base station in a wireless communication system, transmitting scheduling information including resource allocation information, the resource allocation information is determined based on the number of RBs in the first BWP. RIV; and transmitting or receiving data on an RB set corresponding to the RIV in a second BWP, wherein when the number of RBs in the second BWP is greater than the number of RBs in the first BWP, the RIV in the second BWP A method is provided in which each of the starting RB index S and the number of RBs L of the RB set corresponding to the RB set has one of the following values:</p><p>- Start RB index S: {0, K, 2*K, ..., (N<sub>BWP1</sub>-1)*K}, and</p><p>- Number of RBs L: {K, 2*K, 3*K, ..., N<sub>BWP1</sub>*K}</p><p>where, N<sub>BWP1</sub>is the number of RBs of the first BWP, and K is a power of 2 and is determined based on (the number of RBs of the second BWP/the number of RBs of the first BWP).</p><p>In the first and second aspects, preferably, the first BWP and the second BWP may comprise one of the following:</p><p>- (first BWP, second BWP) = (initial BWP, active BWP), and</p><p>- (1st BWP, 2nd BWP) = (currently activated BWP, newly activated BWP),</p><p>Here, the currently activated BWP is an active BWP when the scheduling information is received, and the newly activated BWP is a BWP indicated by a bandwidth part indicator (BPI) in the scheduling information.</p><p>In the first and second aspects, preferably, K may have the following values according to (number of RBs in the second BWP/number of RBs in the first BWP):</p><p><img file="KR20200099581A_D0001.tif" />Here, X is (the number of RBs in the second BWP/the number of RBs in the first BWP), and n is an integer greater than or equal to 0. In the first and second aspects, preferably, the RIV has a value satisfying the following formula can:</p><p>- RIV = N<sub>BWP1</sub>*(L'-1)+S', if (L'-1)floor(N<sub>BWP1</sub>/2), and</p><p>- RIV = N<sub>BWP1</sub>*(N<sub>BWP1</sub>-L'+1)+(N<sub>BWP1</sub>-1-S'), if (L'-1)>floor(N<sub>BWP1</sub>/2),</p><p>Here, L' is L/K, and 1L'N<sub>BWP1</sub>-S', where S' is S/K.</p><p>In the first and second aspects, preferably, when the number of RBs in the second BWP is equal to or less than the number of RBs in the first BWP, the start RB index S of the RB set corresponding to the RIV in the second BWP and The number of RBs L may each be given as one of the following values:</p><p>- Start RB index S: {0, 1, 2, ..., N<sub>BWP2</sub>-1}, and</p><p>- Number of RBs L: {1, 2, 3, ..., N<sub>BWP2</sub>},</p><p>where, N<sub>BWP2</sub>is the number of RBs of the second BWP.</p><p>In a third aspect of the present invention, there is provided an apparatus for use in a wireless communication system, comprising: a memory; and a processor, wherein the processor receives scheduling information including resource allocation information, wherein the resource allocation information includes an RIV determined based on the number of RBs in the first BWP, and in the RIV in the second BWP. configured to transmit or receive data on a corresponding RB set, and when the number of RBs of the second BWP is greater than the number of RBs of the first BWP, the start RB index S of the RB set corresponding to the RIV in the second BWP and the number of RBs L each have one of the following values:</p><p>- Start RB index S: {0, K, 2*K, ..., (N<sub>BWP1</sub>-1)*K}, and</p><p>- Number of RBs L: {K, 2*K, 3*K, ..., N<sub>BWP1</sub>*K}</p><p>where, N<sub>BWP1</sub>is the number of RBs of the first BWP, and K is a power of 2 and is determined based on (the number of RBs of the second BWP/the number of RBs of the first BWP).</p><p>As a fourth aspect of the present invention, there is provided an apparatus for use in a wireless communication system, comprising: a memory; and a processor, wherein the processor transmits scheduling information including resource allocation information, wherein the resource allocation information includes an RIV determined based on the number of RBs in the first BWP, and in the second BWP to the RIV. configured to transmit or receive data on a corresponding RB set, and when the number of RBs of the second BWP is greater than the number of RBs of the first BWP, the start RB index S of the RB set corresponding to the RIV in the second BWP and the number of RBs L each have one of the following values:</p><p>- Start RB index S: {0, K, 2*K, ..., (N<sub>BWP1</sub>-1)*K}, and</p><p>- Number of RBs L: {K, 2*K, 3*K, ..., N<sub>BWP1</sub>*K}</p><p>where, N<sub>BWP1</sub>is the number of RBs of the first BWP, and K is a power of 2 and is determined based on (the number of RBs of the second BWP/the number of RBs of the first BWP).</p><p>In the third and fourth aspects, preferably, the first BWP and the second BWP may include one of the following:</p><p>- (first BWP, second BWP) = (initial BWP, active BWP), and</p><p>- (1st BWP, 2nd BWP) = (currently activated BWP, newly activated BWP),</p><p>Here, the currently activated BWP is an active BWP when the scheduling information is transmitted, and the newly activated BWP is a BWP indicated by a bandwidth part indicator (BPI) in the scheduling information.</p><p>In the third and fourth aspects, preferably, K may have the following values according to (number of RBs in the second BWP/number of RBs in the first BWP):</p><p><img file="KR20200099581A_D0002.tif" />where X is (the number of RBs in the second BWP/the number of RBs in the first BWP), and n is an integer greater than or equal to 0. In the third and fourth aspects, preferably, the RIV has a value satisfying the following formula can:</p><p>- RIV = N<sub>BWP1</sub>*(L'-1)+S', if (L'-1)floor(N<sub>BWP1</sub>/2), and</p><p>- RIV = N<sub>BWP1</sub>*(N<sub>BWP1</sub>-L'+1)+(N<sub>BWP1</sub>-1-S'), if (L'-1)>floor(N<sub>BWP1</sub>/2),</p><p>Here, L' is L/K, and 1L'N<sub>BWP1</sub>-S', where S' is S/K.</p><p>In the third and fourth aspects, preferably, when the number of RBs in the second BWP is equal to or less than the number of RBs in the first BWP, the start RB index S of the RB set corresponding to the RIV in the second BWP and The number of RBs L may each be given as one of the following values:</p><p>- Start RB index S: {0, 1, 2, ..., N<sub>BWP2</sub>-1}, and</p><p>- Number of RBs L: {1, 2, 3, ..., N<sub>BWP2</sub>},</p><p>where, N<sub>BWP2</sub>is the number of RBs of the second BWP.</p>
<p>According to an embodiment of the present invention, it is possible to efficiently transmit and receive signals in a wireless communication system, in particular, a cellular wireless communication system.</p><p>The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.</p>
1 shows an example of a radio frame structure used in a wireless communication system. 2 shows an example of a downlink (DL)/uplink (UL) slot structure in a wireless communication system. 3 is a diagram for explaining a physical channel used in a 3GPP system and a general signal transmission method using the corresponding physical channel. 4 shows an SS/PBCH block for initial cell access in a 3GPP NR system. 5 shows a procedure for transmitting control information and a control channel in a 3GPP NR system. 6 is a diagram illustrating a control resource set (CORESET) through which a physical downlink control channel (PDCCH) can be transmitted in a 3GPP NR system. 7 is a diagram illustrating a method of configuring a PDCCH search space in a 3GPP NR system. 8 is a conceptual diagram illustrating carrier aggregation. 9 is a diagram for explaining single-carrier communication and multi-carrier communication. 10 is a diagram illustrating an example to which a cross-carrier scheduling technique is applied. 11 to 12 are diagrams illustrating a configuration of a bandwidth part (BWP). 13 illustrates resource allocation according to an embodiment of the present invention. 14 illustrates resource allocation according to the RIV scheme. 15 illustrates resource allocation according to an embodiment of the present invention. 16 illustrates signal transmission according to an embodiment of the present invention. 17 is a diagram illustrating a BWP configuration. 18-19 illustrate resource allocation according to an embodiment of the present invention. 20 illustrates signal transmission according to an embodiment of the present invention. 21 is a block diagram showing the configurations of a terminal and a base station, respectively, according to an embodiment of the present invention.
The terms used in this specification have been selected as currently widely used general terms as possible while considering their functions in the present invention, but these may vary depending on the intention of those skilled in the art, customs, or emergence of new technologies. In addition, in certain cases, there are also terms arbitrarily selected by the applicant, and in this case, the meaning will be described in the description of the relevant invention. Therefore, it is intended to clarify that the terms used in this specification should be interpreted based on the actual meaning of the terms and the contents of the entire specification, rather than the names of simple terms.
Throughout the specification, when a component is said to be "connected" to another component, it includes not only the case where it is "directly connected", but also the case where it is "electrically connected" with another component interposed therebetween. do. Also, when it is said that a certain component "includes" a specific component, this means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, the limitation of "greater than" or "less than" based on a specific threshold may be appropriately replaced with "greater than" or "less than", respectively, depending on the embodiment.
The following technologies include code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. It can be used in various wireless access systems. CDMA may be implemented with a radio technology such as universal terrestrial radio access (UTRA) or CDMA2000. TDMA may be implemented with a radio technology such as global system for mobile communications (GSM)/general packet radio service (GPRS)/enhanced data rates for GSM evolution (EDGE). OFDMA may be implemented with a radio technology such as IEEE 802.11 (ie, Wi-Fi), IEEE 802.16 (ie, WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA), and the like. UTRA is part of the universal mobile telecommunications system (UMTS). 3GPP long term evolution (LTE) is a part of evolved UMTS (E-UMTS) using E-UTRA, and LTE-advanced (LTE-A) is an evolved version of 3GPP LTE. A system designed separately from 3GPP NR LTE/LTE-A to support eMBB (enhanced Mobile BroadBand), URLLC (Ultra-Reliable and Low Latency Communication), and mMTC (massive Machine Type Communication) services, which are the requirements of IMT-2020. is a system for For clarity of explanation, 3GPP NR is mainly described, but the technical spirit of the present invention is not limited thereto.
Unless otherwise specified herein, the base station may include a next generation node B (gNB) defined in 3GPP NR. Also, unless otherwise specified, a terminal may include user equipment (UE).
In the present specification, ceil(A) represents a lifting function, floor(A) represents a flooring function, and A mod B represents the remainder obtained by dividing A by B.
1 shows an example of a radio frame structure used in a wireless communication system. 1, the radio frame (or radio frame) used in the 3GPP NR system is 10 ms (Δf<sub>max</sub>N<sub>f </sub>/ 100) * T<sub>c</sub>) can have a length of In addition, the radio frame consists of 10 equally sized subframes (subframes, SFs). where Δf<sub>max</sub>=480*10<sup>3</sup> Hz, N<sub>f</sub>=4096, T<sub>c</sub>=1/(Δf<sub>ref</sub>*N<sub>f, ref</sub>), Δf<sub>ref</sub>=15*10<sup>3</sup> Hz, N<sub>f, ref</sub>= 2048. A number from 0 to 9 may be assigned to each of 10 subframes in one radio frame. Each subframe has a length of 1 ms, and may consist of one or a plurality of slots according to subcarrier spacing. More specifically, in the 3GPP NR system, the usable subcarrier spacing is 15*2<sup>μ </sup>is kHz. μ is a subcarrier spacing configuration factor, and may have a value of μ=0-4. That is, 15 kHz, 30 kHz, 60 kHz, 120 kHz, or 240 kHz may be used as the subcarrier spacing. Subframes of 1 ms in length are 2<sup>μ</sup> It may consist of two slots. At this time, the length of each slot is 2<sup>-μ </sup>is ms. 2 in one subframe<sup>μ</sup>Each slot is 0 to 2<sup>μ </sup>- Numbers up to 1 may be assigned. Also, slots in one radio frame are 0 to 10*2, respectively.<sup>μ </sup>- Numbers up to 1 may be assigned. The time resource may be divided by at least one of a radio frame number (or also referred to as a radio frame index), a subframe number (or referred to as a subframe index), and a slot number (or a slot index).
2 shows an example of a downlink (DL)/uplink (UL) slot structure in a wireless communication system. In particular, FIG. 2 shows the structure of a resource grid of a 3GPP NR system. There is one resource grid per antenna port. Referring to FIG. 2 , a slot includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain. The OFDM symbol also means one symbol interval. Unless otherwise specified, an OFDM symbol may be simply referred to as a symbol. 2, the signal transmitted in each slot is N<sup>size, μ</sup><sub>grid,x </sub>*N<sup>RB</sup><sub>sc</sub>n subcarriers and N<sup>slot</sup><sub>symb</sub>It can be expressed as a resource grid consisting of OFDM symbols. Here, in the downlink resource grid, x=DL, and in the uplink resource grid, x=UL. N<sup>size, μ</sup><sub>grid,x</sub>represents the number of resource blocks (RBs) according to the subcarrier interval configuration factor μ (x is DL or UL), N<sup>slot</sup><sub>symb</sub>denotes the number of OFDM symbols in a slot. N<sup>RB</sup><sub>sc</sub>is the number of subcarriers constituting one RB, N<sup>RB</sup><sub>sc</sub>=12. The OFDM symbol may be referred to as a cyclic prefix OFDM (CP-OFDM) symbol or a discrete Fourier transform spread OFDM (DFT-S-OFDM) symbol according to a multiple access scheme.
The number of OFDM symbols included in one slot may vary according to the length of a cyclic prefix (CP). For example, in the case of a normal CP, one slot may include 14 OFDM symbols, but in the case of an extended CP, one slot may include 12 OFDM symbols. In a specific embodiment, the extended CP may be used only at a 60 kHz subcarrier interval. 2 illustrates a case in which one slot consists of 14 OFDM symbols for convenience of description, embodiments of the present invention may be applied to slots having other numbers of OFDM symbols in the same manner. Referring to Figure 2, each OFDM symbol, in the frequency domain, N<sup>size, μ</sup><sub>grid,x </sub>*N<sup>RB</sup><sub>sc</sub>contains subcarriers. The type of subcarrier may be divided into a data subcarrier for data transmission, a reference signal subcarrier for transmission of a reference signal, and a guard band. The carrier frequency is also referred to as the center frequency (fc).
One RB is N in the frequency domain<sup>RB</sup><sub>sc</sub>It may be defined as (eg, 12) consecutive subcarriers. For reference, a resource composed of one OFDM symbol and one subcarrier may be referred to as a resource element (RE) or a tone. Thus, one RB is N<sup>slot</sup><sub>symb </sub>*N<sup>RB</sup><sub>sc</sub>It may consist of resource elements. Each resource element in the resource grid may be uniquely defined by an index pair (k, l) in one slot. k is from 0 to N in the frequency domain<sup>size, μ</sup><sub>grid,x </sub>*N<sup>RB</sup><sub>sc </sub>- It is an index given up to 1, and l is from 0 to N in the time domain.<sup>slot</sup><sub>symb </sub>- It can be an index assigned up to 1.
In order for the terminal to receive a signal from the base station or to transmit a signal to the base station, the time/frequency synchronization of the terminal may need to be aligned with the time/frequency synchronization of the base station. This is because, only when the base station and the terminal are synchronized, the terminal can determine the time and frequency parameters required to perform demodulation of the DL signal and transmission of the UL signal at an accurate time.
Each symbol of a radio frame operating in time division duplex (TDD) or unpaired spectrum is at least one of a downlink symbol (DL symbol), an uplink symbol (UL symbol), or a flexible symbol (flexible symbol). It may consist of any one. In frequency division duplex (FDD) or paired spectrum, a radio frame operating as a downlink carrier may consist of a downlink symbol or a flexible symbol, and a radio frame operating as an uplink carrier may include an uplink symbol or It may be composed of flexible symbols. In the downlink symbol, downlink transmission is possible but uplink transmission is impossible, and in the uplink symbol, uplink transmission is possible but downlink transmission is impossible. Whether the flexible symbol is used for downlink or uplink may be determined according to a signal.
Information on the type of each symbol, that is, information indicating any one of a downlink symbol, an uplink symbol, and a flexible symbol may be composed of a cell-specific (cell-specific or common) RRC (radio resource control) signal. have. In addition, information on the type of each symbol may be additionally configured as a UE-specific (UE-specific or dedicated) RRC signal. The base station uses the cell-specific RRC signal to i) the period of the cell-specific slot configuration, ii) the number of slots with only downlink symbols from the beginning of the period of the cell-specific slot configuration, iii) the slot immediately following the slot with only downlink symbols. The number of downlink symbols from the first symbol, iv) the number of slots having only uplink symbols from the end of the cell-specific slot configuration period, v) the number of uplink symbols from the last symbol of the slot immediately preceding the slot having only uplink symbols let me know Here, a symbol that is not composed of either an uplink symbol or a downlink symbol is a flexible symbol.
When the information on the symbol type is configured with a UE-specific RRC signal, the base station may signal whether the flexible symbol is a downlink symbol or an uplink symbol with a cell-specific RRC signal. In this case, the UE-specific RRC signal cannot change the downlink symbol or the uplink symbol composed of the cell-specific RRC signal to another symbol type. The terminal-specific RRC signal is N of the corresponding slot for each slot.<sup>slot</sup><sub>symb </sub>Number of downlink symbols among symbols, N of the corresponding slot<sup>slot</sup><sub>symb </sub>The number of uplink symbols among symbols may be signaled. In this case, the downlink symbol of the slot may be continuously configured from the first symbol of the slot to the i-th symbol. In addition, the uplink symbol of the slot may be continuously configured from the j-th symbol to the last symbol of the slot (here, i<j). A symbol that is not composed of either an uplink symbol or a downlink symbol in a slot is a flexible symbol.
A symbol type composed of the above RRC signal may be referred to as a semi-static DL/UL configuration. In the semi-static DL/UL configuration configured with the RRC signal, the flexible symbol is a downlink symbol, an uplink symbol through dynamic slot format information (SFI) transmitted through a physical downlink control channel (PDCCH). , or a flexible symbol. In this case, the downlink symbol or the uplink symbol composed of the RRC signal is not changed to another symbol type. Table 1 illustrates the dynamic SFI that the base station can indicate to the terminal.
<tables num="1"><img file="KR20200099581A_D0003.tif" /></tables>
In Table 1, D denotes a downlink symbol, U denotes an uplink symbol, and X denotes a flexible symbol. As shown in Table 1, a maximum of two DL/UL switching can be allowed within one slot.
3 is a diagram for explaining a physical channel used in a 3GPP system (eg, NR) and a general signal transmission method using the corresponding physical channel. When the power of the terminal increases or the terminal enters a new cell, the terminal performs an initial cell search operation (S101). Specifically, the terminal may synchronize with the base station in the initial cell search. To this end, the terminal may receive a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) from the base station, synchronize with the base station, and obtain information such as a cell ID. Thereafter, the terminal may receive the physical broadcast channel from the base station to obtain broadcast information in the cell.
After completing the initial cell search, the UE receives a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) according to information carried on the PDCCH, thereby acquiring through initial cell search. It is possible to obtain more specific system information than one system information (S102).
When the terminal accesses the base station for the first time or there is no radio resource for signal transmission, the terminal may perform a random access procedure with respect to the base station (steps S103 to S106). First, the UE may transmit a preamble through a physical random access channel (PRACH) (S103), and receive a response message to the preamble from the base station through a PDCCH and a corresponding PDSCH (S104). When a valid random access response message is received from the terminal, the terminal transmits data including its identifier through a physical uplink shared channel (PUSCH) indicated by the uplink grant delivered through the PDCCH from the base station. It is transmitted to the base station (S105). Next, the terminal waits for the reception of the PDCCH as an indication of the base station for conflict resolution. When the terminal successfully receives the PDCCH through its identifier (S106), the random access process ends.
After the procedure described above, the UE receives PDCCH/PDSCH (S107) and a physical uplink shared channel (PUSCH)/physical uplink control channel (PUCCH) as a general uplink/downlink signal transmission procedure. may be transmitted (S108). In particular, the UE may receive downlink control information (DCI) through the PDCCH. DCI may include control information such as resource allocation information for the terminal. Also, the format of the DCI may vary depending on the purpose of use. Uplink control information (UCI) transmitted by the terminal to the base station through the uplink is a downlink/uplink ACK/NACK signal, a channel quality indicator (CQI), a precoding matrix index (PMI), and a rank indicator (RI). ) and the like. Here, CQI, PMI, and RI may be included in CSI (channel state information). In the case of the 3GPP NR system, the UE may transmit control information such as HARQ-ACK and CSI described above through PUSCH and/or PUCCH.
4 shows an SS/PBCH block for initial cell access in a 3GPP NR system. When the UE is powered on or wants to access a cell anew, the UE may acquire time and frequency synchronization with the cell and perform an initial cell search process. In the cell discovery process, the UE uses the cell's physical cell identity N<sup>cell</sup><sub>ID</sub>can be detected. To this end, the terminal may receive a synchronization signal, for example, a main synchronization signal (PSS) and a secondary synchronization signal (SSS) from the base station to synchronize with the base station. In this case, the terminal may obtain information such as a cell identifier (identity, ID).
With reference to FIG. 4( a ), a synchronization signal (SS) will be described in more detail. The synchronization signal may be divided into PSS and SSS. PSS may be used to obtain time domain synchronization and/or frequency domain synchronization such as OFDM symbol synchronization, slot synchronization. SSS may be used to obtain frame synchronization and cell group ID. Referring to FIG. 4(a) and Table 2, the SS/PBCH block may be composed of 20 RBs (=240 subcarriers) contiguous in the frequency axis, and may be composed of 4 OFDM symbols contiguous in the time axis. At this time, in the SS/PBCH block, the PSS is transmitted through the 56th to 182th subcarriers in the first OFDM symbol and the SSS in the third OFDM symbol. Here, the lowest subcarrier index of the SS/PBCH block is numbered from 0. In the first OFDM symbol in which the PSS is transmitted, the base station does not transmit a signal through the remaining subcarriers, that is, the 0 to 55 and 183 to 239 subcarriers. In addition, the base station does not transmit a signal through the 48th to 55th and 183th to 191th subcarriers in the third OFDM symbol in which the SSS is transmitted. The base station transmits a physical broadcast channel (PBCH) through the remaining REs except for the above signal in the SS/PBCH block.
<tables num="2"><img file="KR20200099581A_D0004.tif" /></tables>
SS specifies a total of 1008 unique physical layer cell IDs through a combination of three PSSs and SSSs, and each physical layer cell ID is a part of only one physical-layer cell-identifier group. Preferably, each group may be grouped into 336 physical-layer cell-identifier groups containing three unique identifiers. Therefore, the physical layer cell ID N<sup>cell</sup><sub>ID</sub> = 3N<sup>(1)</sup><sub>ID</sub> + N<sup>(2)</sup><sub>ID</sub>is an index N in the range 0 to 335 representing a physical-layer cell-identifier group<sup>(1)</sup><sub>ID</sub>and an index N from 0 to 2 indicating the physical-layer identifier in the physical-layer cell-identifier group.<sup>(2)</sup><sub>ID</sub>can be uniquely defined by The UE may identify one of three unique physical-layer identifiers by detecting the PSS. In addition, the UE may identify one of 336 physical layer cell IDs associated with the physical-layer identifier by detecting the SSS. At this time, the sequence d of the PSS<sub>PSS</sub>(n) is as follows.
<img file="KR20200099581A_D0005.tif" />
here, <img file="KR20200099581A_D0006.tif" /> ego,
<img file="KR20200099581A_D0007.tif" /> is given as
Also, the sequence d of the SSS<sub>SSS</sub>(n) is as follows.
<img file="KR20200099581A_D0008.tif" />
here,<img file="KR20200099581A_D0009.tif" /> ego,
<img file="KR20200099581A_D0010.tif" /> is given as
A radio frame with a length of 10 ms can be divided into two half frames with a length of 5 ms. A slot in which an SS/PBCH block is transmitted in each half frame will be described with reference to FIG. 4(b). The slot in which the SS/PBCH block is transmitted may be any one of Cases A, B, C, D, and E. In case A, the subcarrier interval is 15 kHz, and the start time of the SS/PBCH block is {2, 8} + 14*nth symbol. In this case, n=0, 1 may be at a carrier frequency of 3 GHz or less. In addition, n=0, 1, 2, 3 may be in a carrier frequency of more than 3 GHz and less than or equal to 6 GHz. In case B, the subcarrier interval is 30 kHz, and the start time of the SS/PBCH block is {4, 8, 16, 20} + 28*nth symbol. In this case, n = 0 at a carrier frequency of 3 GHz or less. In addition, n=0, 1 may be in a carrier frequency of more than 3 GHz and less than or equal to 6 GHz. In case C, the subcarrier interval is 30 kHz, and the start time of the SS/PBCH block is {2, 8} + 14*nth symbol. In this case, n=0, 1 may be at a carrier frequency of 3 GHz or less. In addition, n=0, 1, 2, 3 may be in a carrier frequency of more than 3 GHz and less than or equal to 6 GHz. In case D, the subcarrier interval is 120 kHz, and the start time of the SS/PBCH block is {4, 8, 16, 20} + 28*nth symbol. In this case, n=0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18 at a carrier frequency of 6 GHz or higher. In case E, the subcarrier interval is 240 kHz, and the start time of the SS/PBCH block is {8, 12, 16, 20, 32, 36, 40, 44} + 56*nth symbol. In this case, n=0, 1, 2, 3, 5, 6, 7, 8 may be at a carrier frequency of 6 GHz or higher.
5 shows a procedure for transmitting control information and a control channel in a 3GPP NR system. Referring to FIG. 5A , the base station may add a cyclic redundancy check (CRC) masked (eg, XOR operation) with a radio network temporary identifier (RNTI) to control information (eg, downlink control information, DCI). (S202). The base station may scramble the CRC with an RNTI value determined according to the purpose/target of each control information. The common RNTI used by one or more terminals includes at least one of a system information RNTI (SI-RNTI), a paging RNTI (P-RNTI), a random access RNTI (RA-RNTI), and a transmit power control RNTI (TPC-RNTI). may include In addition, the UE-specific RNTI may include at least one of a cell temporary RNTI (C-RNTI) and a CS-RNTI. Thereafter, the base station may perform rate-matching according to the amount of resource(s) used for PDCCH transmission after performing channel encoding (eg, polar coding) (S204) (S206). Thereafter, the base station may multiplex DCI(s) based on a control channel element (CCE)-based PDCCH structure (S208). In addition, the base station may apply an additional process (S210) such as scrambling, modulation (eg, QPSK), interleaving, etc. to the multiplexed DCI(s), and then map the multiplexed DCI(s) to a resource to be transmitted. A CCE is a basic resource unit for a PDCCH, and one CCE may consist of a plurality (eg, six) of a resource element group (REG). One REG may consist of a plurality (eg, 12) of REs. The number of CCEs used for one PDCCH may be defined as an aggregation level. In the 3GPP NR system, aggregation levels of 1, 2, 4, 8 or 16 may be used. FIG. 5(b) is a diagram related to multiplexing of a CCE aggregation level and a PDCCH, and shows the types of CCE aggregation levels used for one PDCCH and CCE(s) transmitted in the control region accordingly.
6 is a diagram illustrating a control resource set (CORESET) through which a physical downlink control channel (PDCCH) can be transmitted in a 3GPP NR system. CORESET is a time-frequency resource through which PDCCH, which is a control signal for a terminal, is transmitted. Also, a search space, which will be described later, may be mapped to one CORESET. Accordingly, the UE may decode the PDCCH mapped to the CORESET by monitoring the time-frequency domain designated as CORESET, rather than monitoring all frequency bands for PDCCH reception. The base station may configure one or a plurality of CORESETs for each cell to the terminal. CORESET may consist of up to 3 consecutive symbols on the time axis. In addition, CORESET may be configured in units of 6 consecutive PRBs (Physical Resource Blocks) on the frequency axis. 5, CORESET#1 consists of continuous PRBs, and CORESET#2 and CORESET#3 consist of discontinuous PRBs. CORESET can be located in any symbol within the slot. For example, in the embodiment of Figure 5, CORESET#1 starts at the 1st symbol of the slot, CORESET#2 starts at the 5th symbol of the slot, and CORESET#9 starts at the 9th symbol of the slot.
7 is a diagram illustrating a method of configuring a PDCCH search space in a 3GPP NR system. In order to transmit the PDCCH to the UE, at least one search space may exist in each CORESET. In an embodiment of the present invention, the search space is a set of all time-frequency resources (hereinafter, PDCCH candidates) through which the PDCCH of the UE can be transmitted. The search space may include a common search space that a terminal of 3GPP NR searches for and a terminal-specific or UE-specific search space that a specific terminal searches for. In the common search space, it is possible to monitor a PDCCH configured to be commonly found by all terminals in a cell belonging to the same base station. In addition, the terminal-specific search space may be configured for each terminal so that the PDCCH allocated to each terminal can be monitored at different search space positions depending on the terminal. In the case of the UE-specific search space, the search space between terminals may be allocated partially overlapping due to a limited control region to which the PDCCH can be allocated. Monitoring the PDCCH includes blind decoding of PDCCH candidates in the search space. A case in which blind decoding is successful may be expressed as that the PDCCH has been detected/received (successfully), and a case in which blind decoding has failed may be expressed as non-detection/non-reception of the PDCCH, or it may be expressed as not successfully detected/received.
For convenience of explanation, a PDCCH scrambled with a group common (GC) RNTI that UEs already know in order to transmit downlink control information to one or more UEs is referred to as a group common (GC) PDCCH or a common PDCCH. refers to In addition, in order to transmit uplink scheduling information or downlink scheduling information to one specific UE, a PDCCH scrambled with a UE-specific RNTI that a specific UE already knows is referred to as a UE-specific PDCCH. The common PDCCH may be included in the common search space, and the UE-specific PDCCH may be included in the common search space or the UE-specific PDCCH.
The base station transmits information related to resource allocation of a paging channel (PCH) and a downlink-shared channel (DL-SCH) that are transport channels through the PDCCH (ie, DL Grant) or resource allocation of UL-SCH and hybrid automatic repeat request (HARQ). related information (ie, UL grant) may be informed to each UE or UE group. The base station may transmit the PCH transport block and the DL-SCH transport block through the PDSCH. The base station may transmit data excluding specific control information or specific service data through the PDSCH. In addition, the UE may receive data excluding specific control information or specific service data through the PDSCH.
The base station may transmit information on which terminal (one or a plurality of terminals) the PDSCH data is transmitted to and how the corresponding terminal should receive and decode the PDSCH data by including it in the PDCCH. For example, the DCI transmitted to a specific PDCCH is CRC-masked with an RNTI of "A", and the DCI indicates that the PDSCH is allocated to a radio resource (eg, frequency location) of "B", It is assumed that transmission format information (eg, transport block size, modulation scheme, coding information, etc.) is indicated. The UE monitors the PDCCH using its own RNTI information. In this case, if there is a terminal that blindly decodes the PDCCH with the "A" RNTI, the corresponding terminal receives the PDCCH, and receives the PDSCH indicated by "B" and "C" through the received PDCCH information.
Table 3 shows an embodiment of a physical uplink control channel (PUCCH) used in a wireless communication system.
<tables num="3"><img file="KR20200099581A_D0011.tif" /></tables>
The PUCCH may be used to transmit the following uplink control information (UCI).
- SR (scheduling request): information used to request uplink UL-SCH resources.
- HARQ-ACK: A response to a PDCCH (indicating DL SPS release) and/or a response to a downlink transport block (TB) on the PDSCH. HARQ-ACK indicates whether information transmitted through PDCCH or PDSCH is received. The HARQ-ACK response includes positive ACK (simply, ACK), negative ACK (hereinafter, NACK), discontinuous transmission (DTX) or NACK/DTX. Here, the term HARQ-ACK is used interchangeably with HARQ-ACK/NACK and ACK/NACK. In general, ACK may be expressed as a bit value of 1, and NACK may be expressed as a bit value of 0.
- CSI (channel state information): feedback information for a downlink channel. The terminal is generated based on a CSI-RS (reference signal) transmitted by the base station. Multiple input multiple output (MIMO)-related feedback information includes a rank indicator (RI) and a precoding matrix indicator (PMI). CSI may be divided into CSI part 1 and CSI part 2 according to information indicated by the CSI.
In the 3GPP NR system, five PUCCH formats may be used to support various service scenarios, various channel environments, and frame structures.
PUCCH format 0 is a format capable of transmitting 1-bit or 2-bit HARQ-ACK information or SR. PUCCH format 0 may be transmitted through one or two OFDM symbols on the time axis and one RB on the frequency axis. When PUCCH format 0 is transmitted in two OFDM symbols, the same sequence in two symbols may be transmitted in different RBs. Through this, the terminal may obtain a frequency diversity gain. More specifically, the terminal M<sub>bit</sub> Bit UCI (M<sub>bit</sub> = 1 or 2) according to the value of the cyclic shift (cyclic shift) m<sub>cs</sub>is determined, and a base sequence of length 12 is set to a predetermined value m<sub>cs</sub>It is possible to transmit a cyclic-shifted sequence by mapping to 12 REs of one OFDM symbol and one PRB. The number of cyclic shifts available to the terminal is 12, and M<sub>bit</sub> = 1, 1-bit UCI 0 and 1 can be expressed as a sequence corresponding to two cyclic shifts having a difference of 6 cyclic shift values. Also, M<sub>bit</sub> = 2, the 2-bit UCI 00, 01, 11, and 10 may be represented by a sequence corresponding to four cyclic shifts having a difference of 3 cyclic shift values.
PUCCH format 1 may carry 1-bit or 2-bit HARQ-ACK information or SR. PUCCH format 1 may be transmitted through consecutive OFDM symbols on the time axis and one PRB on the frequency axis. Here, the number of OFDM symbols occupied by PUCCH format 1 may be one of 4 to 14. More specifically, M<sub>bit </sub>UCI = 1 may be modulated with BPSK. terminal is M<sub>bit</sub>=2 UCI may be modulated by QPSK (quadrature phase shift keying). A signal is obtained by multiplying a modulated complex valued symbol d(0) by a sequence of length 12. The UE spreads the obtained signal as an orthogonal cover code (OCC) on the even-numbered OFDM symbol to which PUCCH format 1 is allocated and transmits it. In PUCCH format 1, the maximum number of different terminals multiplexed to the same RB is determined according to the length of the OCC used. A demodulation reference signal (DMRS) may be spread and mapped to odd-numbered OFDM symbols of PUCCH format 1 as OCC.
PUCCH format 2 may carry more than 2 bits of UCI. PUCCH format 2 may be transmitted through one or two OFDM symbols on a time axis and one or a plurality of RBs on a frequency axis. When PUCCH format 2 is transmitted with two OFDM symbols, the same sequence may be transmitted on different RBs through the two OFDM symbols. Through this, the terminal may obtain a frequency diversity gain. More specifically, M<sub>bit</sub> Bit UCI (M<sub>bit</sub>>2) is bit-level scrambled, QPSK modulated and mapped to the RB(s) of one or two OFDM symbol(s). Here, the number of RBs may be one of 1 to 16.
PUCCH format 3 or PUCCH format 4 may carry more than 2 bits of UCI. PUCCH format 3 or PUCCH format 4 may be transmitted through consecutive OFDM symbols on the time axis and one PRB on the frequency axis. The number of OFDM symbols occupied by PUCCH format 3 or PUCCH format 4 may be one of 4 to 14. Specifically, the terminal is<sub>bit</sub> Bit UCI (M<sub>bit</sub>>2) by modulating ð/2-BPSK (Binary Phase Shift Keying) or QPSK to complex symbols d(0)~d(M<sub>symb</sub>-1) can be created. Here, if ð/2-BPSK is used, M<sub>symb</sub>=M<sub>bit</sub>, and using QPSK, M<sub>symb</sub>=M<sub>bit</sub>/2. The UE may not apply block-unit spreading to PUCCH format 3. However, the UE uses a PreDFT-OCC of length-12 length so that the PUCCH format 4 can have 2 or 4 multiplexing capacity in 1 RB (ie, 12 subcarriers) block-unit spreading can be applied. The UE may transmit the spread signal by transmitting precoding (or DFT-precoding) and mapping the spread signal to each RE.
In this case, the number of RBs occupied by PUCCH format 2, PUCCH format 3, or PUCCH format 4 may be determined according to the length of the UCI transmitted by the UE and the maximum code rate. When the UE uses PUCCH format 2, the UE may transmit HARQ-ACK information and CSI information together through PUCCH. If the number of RBs that the UE can transmit is greater than the maximum number of RBs available for PUCCH format 2, PUCCH format 3, or PUCCH format 4, the UE does not transmit some UCI information according to the priority of UCI information and does not transmit the remaining Only UCI information can be transmitted.
PUCCH format 1, PUCCH format 3, or PUCCH format 4 may be configured through an RRC signal to indicate frequency hopping in a slot. When frequency hopping is configured, an index of an RB to be frequency hopping may be configured as an RRC signal. When PUCCH format 1, PUCCH format 3, or PUCCH format 4 is transmitted over N OFDM symbols in the time axis, the first hop has floor (N/2) OFDM symbols and the second hop is ceil ( N/2) OFDM symbols.
PUCCH format 1, PUCCH format 3, or PUCCH format 4 may be configured to be repeatedly transmitted in a plurality of slots. In this case, the number K of slots in which the PUCCH is repeatedly transmitted may be configured by the RRC signal. The repeatedly transmitted PUCCH should start from an OFDM symbol at the same position in each slot and have the same length. If any one OFDM symbol among the OFDM symbols of the slot in which the UE should transmit the PUCCH is indicated as a DL symbol by the RRC signal, the UE may transmit the PUCCH by delaying it to the next slot without transmitting the PUCCH in the corresponding slot.
8 is a conceptual diagram illustrating carrier aggregation. In the carrier aggregation, in order for the wireless communication system to use a wider frequency band, a frequency block or (logical meaning) of a terminal consisting of an uplink resource (or component carrier) and/or a downlink resource (or component carrier) or a plurality of cells It means how to use it as one large logical frequency band. Hereinafter, for convenience of description, the term "component carrier" will be used.
Referring to FIG. 8 , as an example of a 3GPP NR system, the entire system band may include up to 16 component carriers, and each component carrier may have a bandwidth of up to 400 MHz. A component carrier may include one or more physically contiguous subcarriers. 8 shows that each component carrier has the same bandwidth, but this is only an example, and each component carrier may have a different bandwidth. In addition, although each component carrier is illustrated as being adjacent to each other on the frequency axis, the figure is illustrated in a logical concept, and each component carrier may be physically adjacent to each other or may be separated from each other.
A different center frequency may be used in each component carrier. Also, one center frequency common to physically adjacent component carriers may be used. Assuming that all component carriers are physically adjacent to each other in the embodiment of FIG. 8 , the center frequency A may be used in all component carriers. In addition, assuming that the respective component carriers are not physically adjacent to each other, the center frequency A and the center frequency B may be used in each of the component carriers.
When the entire system band is extended by carrier aggregation, a frequency band used for communication with each terminal may be defined in units of component carriers. Terminal A can use 100 MHz, which is the entire system band, and performs communication using all five component carriers. terminal B<sub>1</sub>~B<sub>5</sub>can use only 20 MHz bandwidth and performs communication using one component carrier. terminal C<sub>1</sub> and C<sub>2</sub>can use a 40 MHz bandwidth and performs communication using two component carriers, respectively. Two component carriers may or may not be logically/physically adjacent. In the embodiment of Figure 8, terminal C<sub>1</sub>Using these two non-adjacent component carriers, terminal C<sub>2</sub>shows a case in which two adjacent component carriers are used.
9 is a diagram for explaining single carrier communication and multi-carrier communication. In particular, FIG. 9(a) shows a subframe structure of a single carrier, and FIG. 9(b) shows a subframe structure of a multi-carrier.
Referring to FIG. 9A , in the case of the FDD mode, a general wireless communication system may perform data transmission or reception through one DL band and one UL band corresponding thereto. In another specific embodiment, in the case of the TDD mode, the wireless communication system divides a radio frame into an uplink time unit and a downlink time unit in the time domain, and may transmit or receive data through the uplink/downlink time unit. . Referring to FIG. 9B , a bandwidth of 60 MHz may be supported by collecting three 20 MHz component carriers (CCs) in UL and DL, respectively. Each of the CCs may be adjacent to or non-adjacent to each other in the frequency domain. 9(b) shows a case in which both the bandwidth of the UL CC and the bandwidth of the DL CC are identical and symmetric for convenience, but the bandwidth of each CC may be independently determined. In addition, asymmetric carrier aggregation in which the number of UL CCs and the number of DL CCs are different is possible. A DL/UL CC allocated/configured to a specific UE through RRC may be referred to as a serving DL/UL CC of a specific UE.
The base station may communicate with the terminal by activating some or all of the serving CCs of the terminal or by deactivating some CCs. The base station may change activated/deactivated CCs and may change the number of activated/deactivated CCs. If the base station allocates the available CCs to the terminal in a cell-specific or terminal-specific manner, unless the CC allocation to the terminal is completely reconfigured or the terminal is handover, at least one of the CCs once allocated is not deactivated. may not be One CC that is not deactivated to the UE is referred to as a primary CC (PCC) or a primary cell (PCell), and a CC that the base station can freely activate/deactivate is a secondary CC (SCC) or a secondary cell (SCell). ) is called
Meanwhile, 3GPP NR uses the concept of a cell to manage radio resources. A cell is defined as a combination of downlink and uplink resources, that is, a combination of DL CC and UL CC. A cell may be configured with a DL resource alone or a combination of a DL resource and a UL resource. When carrier aggregation is supported, linkage between the carrier frequency of the DL resource (or DL CC) and the carrier frequency of the UL resource (or UL CC) may be indicated by system information. The carrier frequency means the center frequency of each cell or CC. A cell corresponding to the PCC is referred to as a PCell, and a cell corresponding to the SCC is referred to as an SCell. A carrier corresponding to the PCell in the downlink is a DL PCC, and a carrier corresponding to the PCell in the uplink is a UL PCC. Similarly, a carrier corresponding to the SCell in the downlink is a DL SCC, and a carrier corresponding to the SCell in the uplink is a UL SCC. According to the terminal capability (capability), the serving cell(s) may be composed of one PCell and zero or more SCells. In the case of a UE in the RRC_CONNECTED state but carrier aggregation is not configured or does not support carrier aggregation, there is only one serving cell configured only with a PCell.
As mentioned above, the term "cell" used in carrier aggregation is distinguished from the term "cell" that refers to a certain geographic area in which a communication service is provided by one base station or one antenna group. In order to distinguish a cell indicating a certain geographic area from a cell of carrier aggregation, in the present invention, a cell of carrier aggregation is referred to as a CC, and a cell of the geographic area is referred to as a cell.
10 is a diagram illustrating an example to which a cross-carrier scheduling technique is applied. When cross-carrier scheduling is configured, the control channel transmitted through the first CC may schedule the data channel transmitted through the first CC or the second CC using a carrier indicator field (CIF). CIF is contained within DCI. In other words, a scheduling cell is configured, and the DL grant/UL grant transmitted in the PDCCH region of the scheduling cell schedules the PDSCH/PUSCH of the scheduled cell. That is, a search region for a plurality of component carriers exists in the PDCCH region of the scheduling cell. A PCell is basically a scheduling cell, and a specific SCell may be designated as a scheduling cell by a higher layer.
In the embodiment of FIG. 10 , it is assumed that three DL CCs are merged. Here, it is assumed that DL component carrier #0 is a DL PCC (or PCell), and DL component carrier #1 and DL component carrier #2 are assumed to be DL SCC (or SCell). Also, it is assumed that the DL PCC is set as the PDCCH monitoring CC. If cross-carrier scheduling is not configured by UE-specific (or UE-group-specific or cell-specific) higher layer signaling, CIF is disabled, and each DL CC has its own without CIF according to the NR PDCCH rule. It is possible to transmit only the PDCCH scheduling the PDSCH of (non-cross-carrier scheduling, self-carrier scheduling). On the other hand, when cross-carrier scheduling is configured by UE-specific (or UE-group-specific or cell-specific) higher layer signaling, CIF is enabled, and a specific CC (eg, DL PCC) uses CIF. Accordingly, not only the PDCCH scheduling the PDSCH of DL CC A but also the PDCCH scheduling the PDSCH of another CC can be transmitted (cross-carrier scheduling). On the other hand, the PDCCH is not transmitted in other DL CCs. Therefore, the terminal receives a self-carrier scheduled PDSCH by monitoring a PDCCH that does not include a CIF depending on whether cross-carrier scheduling is configured for the terminal, or monitors a PDCCH including a CIF to monitor a cross-carrier scheduled PDSCH receive
Meanwhile, although FIGS. 9 and 10 exemplify the subframe structure of the 3GPP LTE-A system, the same or similar configuration may be applied to the 3GPP NR system. However, in the 3GPP NR system, the subframes of FIGS. 9 and 10 may be replaced with slots.
Referring to FIG. 11 , in the 3GPP NR system, terminals may perform transmission/reception using a bandwidth that is less than or equal to the bandwidth of a carrier (or cell). To this end, the terminal may be configured with one or more BWP (Bandwidth part) from the base station. BWP consists of consecutive PRBs. Referring to FIG. 11( a ), BWPs may be configured not to overlap within the bandwidth of a carrier (or cell). Referring to FIG. 11( b ), BWPs in a carrier (or cell) may be configured to overlap. In addition, one BWP may be configured to be included in another BWP. One or a plurality of BWPs among BWPs configured in a carrier (or cell) may be allocated and configured for each terminal. In the carrier (or cell), only one BWP is activated (active BWP), and the UE does not expect to receive or transmit any signal in the PRB other than the active BWP in the carrier (or cell). The terminals may transmit and receive with the base station using one active BWP among the allocated and configured BWP(s).
A maximum of 4 DL BWPs and a maximum of 4 UL BWPs may be configured in a TDD cell per cell. A maximum of four DL/UL BWP pairs may be configured in an FDD cell per cell. The UE may activate one DL BWP and one UL BWP for each carrier (or cell). Moving the terminal from one BWP to another BWP, that is, deactivating the current BWP and activating a new BWP (hereinafter, BWP switching) may be indicated using DCI. Specifically, in order to change the DL BWP of the UE, a BPI (Bandwidth part indicator) indicating a newly activated BWP may be included in the DCI for scheduling the PDSCH. That is, when the UE receives the DCI scheduling the PDSCH, it can know through which BWP the PDSCH is transmitted through the BPI, and through the RA (Resource Allocation) information of the DCI, in which PRBs in the BWP indicated by the BPI It can be known whether the PDSCH is transmitted. Similarly, in order to change the UL BWP of the UE, a BPI indicating a newly activated BWP may be included in the DCI for scheduling the PUSCH. That is, when the UE receives the DCI for scheduling the PUSCH, it can know through which BWP the PUSCH should be transmitted through the BPI, and through which PRBs in the BWP indicated by the BPI through the RA information of the DCI, the PUSCH should be transmitted. know that you do In the case of a TDD cell, the BPI indicates a DL BWP or a UL BWP, and in the case of an FDD cell, the BPI indicates a DL BWP/UL BWP pair.
Referring to FIG. 12 , when a plurality of BWPs are configured in the terminal, at least one CORESET may be configured/allocated to the terminal in each BWP. Referring to FIG. 12(a)(b), the CORESET for each BWP may be located in the time/frequency resource region occupied by each BWP. In other words, CORESET #1 for BWP #1 exists in the PRBs of the time/frequency resource domain occupied by BWP #1, and CORESET #2 for BWP #2 is a PRB of the time/frequency resource domain occupied by BWP #2. may exist in Referring to FIG. 12( b ), when BWPs are configured to overlap each other, PRBs occupied by CORESET may be located within their BWP time/frequency resource region, but may be located in other BWPs. In other words, CORESET #2 for BWP #2 may overlap with PRB(s) of the time/frequency resource region occupied by BWP #1.
As described above, a plurality of BWPs may be configured in a carrier (or cell), and each BWP may be configured with a plurality of consecutive PRBs. On the other hand, only one BWP is activated in the carrier (or cell) (active BWP), and the UE does not expect to receive or transmit any signal in the PRB other than the active BWP in the carrier (or cell). Active BWP can be changed using BPI in DCI (BWP switching or change). The BWP indicated through the BPI is newly activated, and other configured BWP(s) are deactivated. BPI may be included in DCI scheduling PDSCH or PUSCH.
When a plurality of BWPs are configured in a carrier (or cell), the band/size (eg, number of PRBs) of each BWP may be configured independently. Accordingly, the number of PRBs may be different for each BWP. Meanwhile, the size of DCI transmitted in the activated BWP may be determined based on the size of the BWP. Specifically, the RA field size of the DCI transmitted in the activated BWP may be determined based on the size of the active BWP or the initial BWP. Therefore, when the DCI schedules a BWP having a size different from the BWP used for determining the DCI size, a problem in which the length/size (eg, number of bits) of the RA field is different must be solved.
Hereinafter, a method for allocating a resource when BWP(s) is configured in a carrier (or cell) and a method for transmitting and receiving data accordingly will be described.
For convenience of description, first, terms are defined as follows.
- Active BWP (Active BWP): indicates the activated BWP. One BWP can be activated per cell. Indicates the BWP in which signal transmission and reception is performed. For example, the DL active BWP indicates a BWP in which PDCCH / PDSCH reception is performed. UL active BWP indicates a BWP in which PUCCH / PUSCH transmission is performed. According to the duplex scheme, the DL active BWP and the UL active BWP may be the same or different.
- Inactive BWP (Inactive BWP): Indicates the inactive BWP. It represents the remaining BWPs except for one active BWP in one cell, and is a BWP in which signal transmission and reception is not performed.
- BWP switching: BWP switching is the process of changing the active BWP from the currently activated BWP to the newly activated BWP. For example, when (i) the active BWP at the point in time when the PDCCH (or DCI) is received and (ii) the BWP indicated by the BPI of the PDCCH (or DCI) is different, the terminal sets the active BWP to the currently activated BWP to the BWP dictated by the BPI. That is, after BWP switching, the active BWP becomes the BWP indicated by the BPI of the PDCCH (or DCI).
-Current (active) BWP (BWP): It is the active BWP at the current time when the PDCCH (or DCI) including the scheduling information is received. The currently activated BWP may be different from the UL BWP and the DL BWP. When BWP switching is performed, compared to a new (active) BWP (BWP) to be newly activated, it may be referred to as a previously activated BWP (previous (active) BWP).
- BWP to be newly activated (New (active) BWP): It is an inactive BWP at the current time when a PDCCH (or DCI) including scheduling information is received, but indicates a BWP to be activated by BWP switching. That is, it indicates the active BWP after BWP switching.
- Initial (active) BWP (Initial (active) BWP): Before BWPs are configured to the terminal during or after RRC connection establishment, it indicates the BWP used by the terminal for initial access.
- Default BWP (Default BWP): If it is not scheduled for more than a certain time, the UE switches the active DL BWP (or DL/UL BWP pair) to the default BWP.
- RA field of BWP: Indicates the RA field used to schedule BWP.
- Length of RA field required for BWP: Indicates the length/size (eg, number of bits) of the RA field used to schedule BWP. The RA field size is determined based on the bandwidth of the BWP (eg, the number of RBs).
- Scheduling BWP: It means scheduling data transmission and reception within the BWP. For example, it may mean scheduling PDSCH reception or scheduling PUSCH transmission in BWP.
- Scheduling BWP #B in BWP #A: It may mean that reception of scheduling information (eg, DCI) is performed in BWP #A, and corresponding data transmission and reception are performed in BWP #B. In addition, the length/size of scheduling information (eg, DCI) is determined based on the size of BWP #A (eg, the number of RBs), and it may mean that the corresponding data transmission and reception are performed in BWP #B.
<u>Example 1: Bit-map based scheduling</u>
The UE may determine a resource block group (RBG) size (P) according to the number of PRBs included in the BWP. An RBG is a basic unit of a bit-map-based resource allocation scheme (eg, RA type 0), and one RBG consists of P consecutive PRBs. Referring to Table 4, with respect to the RBG size (P), one of two configurations may be configured as RRC, and the UE may have a larger RBG size P value as the number of PRBs in the BWP increases. In the BWP with N PRBs, the RA field for bit-map-based resource allocation requires a ceil (N/P) bit. As an example, if the BWP consists of 40 PRBs and Configuration 1 is configured, the RBG size P = 4. That is, four (continuous) PRBs are bundled to form one RBG, and 10 RBGs are used for resource allocation. In this case, the RA field needs 10 bits.
<tables num="4"><img file="KR20200099581A_D0012.tif" /></tables>
Different BWPs may be configured to have different numbers of PRBs. Accordingly, the RBG size and the number of RBGs may be different for each BWP. Therefore, in order to schedule one BWP to another, it is necessary to solve the problem of different lengths/sizes (eg, number of bits) of the RA field.
As a method of solving the above problem, when there are a plurality of BWP(s) configured for the terminal, the plurality of DCI lengths may be determined based on the length of the RA field required for each BWP. Accordingly, the UE may perform PDCCH blind decoding assuming a plurality of DCI lengths. Although this method solves the above problem, since blind decoding of the PDCCH is performed assuming a plurality of DCI lengths, energy consumption of the UE is serious.
As another method, the UE may determine the DCI length based on the longest length among RA field lengths required for each BWP for a plurality of BWP(s) configured for the UE. Accordingly, the UE performs blind decoding using the DCI length in which the length of the RA field calculated based on the largest BWP is reflected. This method solves the above problem and does not increase the number of PDCCH blind decodings of the UE. However, since the DCI length is increased, the coding gain of the PDCCH is lowered or a high overhead is caused to the control channel.
in another way, BWP upper layer that informs the configuration(Yes, RRC) parameter(Yes, BandwidthPart-Config)is composed, Depending on the configuration information, different sizes of BWP(field)only if it is configured, terminal is the largest BWPcalculated based on RA the length of the field DCI using the length PDCCH Blind decoding can be performed. BandwidthPart-ConfigIf it is not configured, the terminal default BWPcorresponding to DCI based on length PDCCH Blind decoding can be performed.
in another way, terminal is activated BWPnecessary for RA according to field length DCI determine the length, determined DCI using the length PDCCH Blind decoding can be performed. In other words, the terminal DCIof BPIaccording to the value of RAcan be interpreted differently. E.g, BPIis currently active BWPif instructed, currently active BWPof RBG according to size RAcan interpret. On the other hand, BPIis currently active BWPother than BWP(below, to be newly activated BWP)if instructed, to be newly activated BWPof RBG according to size RAcan interpret. At this time, DCIincluded in RA the length of the field K<sub>current</sub>say, to be newly activated BWPnecessary for RA the length of the field K<sub>new</sub>let's say. As I said earlier, necessary RA the length of the field ceil(BWPof PRB Number/RBG size)can be determined as. here, K<sub>current</sub>go K<sub>new</sub>greater than or equal to, DCIof K<sub>current</sub>-beat RA field(below, DCI RA field)of iThe second bit is the newly activated BWPof ith RBGindicates whether to allocate. and, DCIof RA last of the field K<sub>current</sub>-K<sub>new</sub> beat(field)silver 0 or 1reserved to(reserved)do. if, K<sub>current</sub>go K<sub>new</sub>if less than, to be newly activated BWPof K<sub>new</sub> RBGs middle K<sub>new</sub>-K<sub>current </sub>RBGsIs RA Regardless of the value of the field, the resource is not always allocated and, RA The field will be newly activated BWPof K<sub>current </sub>RBGsCan indicate information about whether or not has been allocated. DCI RA of the field iThe second bit is the newly activated BWPof f(i)th RBG indicate whether to allocate. here, f(i)Is {1,2,...,K<sub>current</sub>} -> {1,2,...,K<sub>new</sub>}is a function corresponding to. E.g, f(i)can be composed of.
- f(i) = ican be composed of. thus, DCIof RA of the field iThe second bit is the newly activated BWPof ith RBGindicates whether to allocate. here, the terminals 1~K<sub>current</sub> RBGsreceive only resource allocation information for, K<sub>current</sub>+1~K<sub>new</sub> RBGsYou cannot receive resource allocation information for.
- f(i) = i+can be configured as an offset. The offset value is 0,1,...,(K<sub>new</sub>-K<sub>current</sub>) can have one of the values. do 13refer to, BWP#1go 5doggy RBGhave them, BWP#2go 8doggy RBGwhen you have them, BWP#1at BWP#1resource allocation when indicating scheduling information of BWP#1at BWP#2The resource allocation result when indicating scheduling information of. RA the value of the field is [1 0 0 1 1]let's say. do 13(a)refer to, BWP#1at BWP#1If you indicate the scheduling information of, BWP#1of RBG#1, RBG#4, RBG#5can be assigned. do 13(b)refer to, BWP#1at BWP#2indicate scheduling information of, offset 0back side, BWP#2of RBG#1, RBG#4, RBG#5can be assigned. do 13(c)refer to, BWP#1at BWP#2indicate scheduling information of, offset 2back side, BWP#2of RBG#3, RBG#6, RBG#7can be assigned.
- f(i)is the terminal's C-RNTI or C-RNTIcan be determined from a value derived from. E.g, f(i) = i+(C-RNTI mod (K<sub>new</sub>-K<sub>current</sub>+1))can be composed of. thus, DCI RA of the field iThe second bit is the newly activated BWPof i+(C-RNTI mod (K<sub>new</sub>-K<sub>current</sub>+1))th RBGindicates whether to allocate. another example, C-RNTIdoctor using-random sequence(Pseudo-random sequence)is available. E.g, f(i) = i+(g(C-RNTI) mod (K<sub>new</sub>-K<sub>current</sub>+1))can be composed of. here, g(C-RNTI)Is C-RNTIdoctor made using-is a random sequence. f(i)go C-RNTISince it is determined based on, per terminal f(i)resource allocation is different due to. However, in this way f(i)resource allocation due to BWP The same regardless of the switching time.
- f(i)is the terminal's C-RNTIand slot index, or it may be determined from a value derived from that value.. E.g, f(i) = i+(n_slot+C-RNTI mod (K<sub>new</sub>-K<sub>current</sub>+1)) can be composed of. here, n_slotsilver PDCCHThe index of the slot where is received, or PDSCHis the index of the allocated slot. thus, DCI RA of the field iThe second bit is the newly activated BWPof i+(n_slot + C-RNTI mod (K<sub>new</sub>-K<sub>current</sub>+1))th RBGindicates whether to allocate. another example, C-RNTIand Pseudo-Using Slot Index-A random sequence can be used. E.g, f(i) = i+(g(C-RNTI, n_slot) mod (K<sub>new</sub>-K<sub>current</sub>+1))can be composed of. here, g(C-RNTI, n_slot)Is C-RNTIclass n_slotdoctor made using-is a random sequence. f(i)go C-RNTI not only the value BWP Because it is determined by the switching time, per terminal, BWP by switching time f(i)resource allocation is different due to.
in another way, K<sub>new</sub>go K<sub>current</sub> when greater than, to be newly activated BWPof RBGtie them up, RBG set(RBG_set)configure the currently active BWPreceived from DCIof K<sub>current</sub>-beat RA field(below, DCI RA field)Is RBG It is possible to indicate whether the set is scheduled or not.. E.g, Seach RBGtie them up RBG a set K<sub>new,RBG_set </sub>= ceil(K<sub>new</sub>/S)make a dog. E.g, RBG set#1silver RBG#1~RBG#Sis composed of, RBG set#2Is RBG#(S+1)~RBG#(2*S)can be composed of. last RBG except for the set RBGheard Sdoggy RBGinclude those, last RBG the set ((K<sub>new</sub>-1)<sub></sub>mod S)+1 doggy RBGmay include. in this case, DCI RA of the field iThe second bit is the newly activated BWPof f(i)th RBG_setindicates whether to allocate. here, f(i)Is {1,2,...,K<sub>current</sub>} -> {1,2,...,K<sub>new,RBG_set</sub>}is a function corresponding to. E.g, f(i)can be composed of.
- f(i)Is f(i) = ican be composed of. thus, DCI RA of the field iThe second bit is the newly activated BWPof f(i)th RBG Indicates whether a set is allocated or not. here, the terminals 1~K<sub>current</sub> RBG Receives only resource allocation information for the set, K<sub>current</sub>+1~K<sub>new,RBG_set</sub> RBG You cannot receive resource allocation information for a set..
- f(i) = i+can be configured as an offset. The offset value is 0,1,...,(K<sub>new,RBG_set</sub>-K<sub>current</sub>) can have one of the values.
- f(i)is the terminal's C-RNTI, or C-RNTIcan be determined from a value derived from. E.g, f(i) = i+(C-RNTI mod (K<sub>new,RBG_set</sub>-K<sub>current</sub>+1))can be composed of. thus, DCI RA of the field iThe second bit is the newly activated BWPof i+(C-RNTI mod (K<sub>new,RBG_set</sub>-K<sub>current</sub>+1))th RGB Indicates whether a set is allocated or not. another example, C-RNTIdoctor using-A random sequence can be used. E.g, f(i) = i+(g(C-RNTI) mod (K<sub>new,RBG_set</sub>-K<sub>current</sub>+1))can be composed of. here, g(C-RNTI)Is C-RNTIdoctor made using-is a random sequence. f(i)go C-RNTISince it is determined based on, per terminal f(i)resource allocation is different due to. However, in this way f(i)resource allocation due to BWP The same regardless of the switching time.
- f(i)is the terminal's C-RNTIand slot index, or it may be determined from a value derived from that value.. E.g, f(i) = i+(n_slot+C-RNTI mod (K<sub>new,RBG_set</sub>-K<sub>current</sub>+1))can be composed of. here, n_slotsilver PDCCHThe index of the slot where is received, or PDSCHis the index of the allocated slot.. thus, DCI RA of the field iThe second bit is the newly activated BWPof i+(n_slot+C-RNTI mod (K<sub>new,RBG_set</sub>-K<sub>current</sub>+1))th RBG Indicates whether a set is allocated or not. another example, C-RNTIand Pseudo-Using Slot Index-A random sequence can be used. E.g, f(i) = i+(g(C-RNTI, n_slot) mod (K<sub>new,RBG_set</sub>-K<sub>current</sub>+1))can be composed of. here, g(C-RNTI, n_slot)Is C-RNTIclass n_slotdoctor made using-is a random sequence. f(i)go C-RNTI not only the value BWP Because it is determined by the switching time, per terminal, BWP by switching time f(i)resource allocation is different due to.
The above methods are different PRB having a number BWPbetween the fields BWP It relates to events that can occur when switching. BWP after the switch, The terminal will be newly activated BWPof RA based on field length DCI by calculating the length PDCCH decoding can be performed. In addition, fallback(fallback) When operating in mode, the terminal DLdefault in case of DL BWPconsidered as BWPof RA based on field length DCI by calculating the length PDCCH decoding can be performed. In addition, ULIn the case of, terminal is default UL BWPconsidered as BWPof RA based on field length DCI by calculating the length PDCCH decoding can be performed.
Another example of the present invention, The terminal is currently active BWPof RA than the size of the field. BPIto be newly activated as indicated by BWPof RA If the field size is larger, bigger RA to fit the field size. '0'can be pasted. Specifically, currently active BWPof RA the field size K<sub>current</sub>say, to be newly activated BWPof RA the field size K<sub>RBG,set</sub> (or, K<sub>new</sub>)when you say, the terminal DCIafter decoding, K<sub>RBG_set</sub>-K<sub>current</sub>doggy 0second K<sub>current</sub> of length RA after being put on the field, DCIfield value of(Yes, K<sub>new</sub> of length RA)can interpret. here, K<sub>RBG_set</sub>-K<sub>current</sub> doggy 0The following method can be considered in relation to the location of attaching.
for example, the terminal K<sub>RBG_set</sub>-K<sub>current</sub>doggy 0second K<sub>current</sub> of length RA front of the field(Most significant bit, MSB, front)can be pasted on. K<sub>current</sub> of length RA By using the resource allocation range that the field value can have(Yes, f(i) = iif), currently active BWPto be newly activated within the resource allocation range that can have BWPperform resource allocation in, according to the methods described above LSB(Least significant bit) K<sub>current</sub> Various reinterpretation of the resource allocation range that bits can have(reinterpretation) can do. E.g, resource allocation granularity(granularity)to perform resource allocation by increasing, currently active BWPhave the same resource allocation as, By setting the offset value for each terminal, the newly activated BWPcan be set to shift resource allocation in.
another example, the terminal K<sub>RBG_set</sub>-K<sub>current</sub>doggy 0second K<sub>current</sub> of length RA behind the field(Least significant bit, LSB, back)can be pasted on. K<sub>current</sub> of length RA By subtracting some value from the resource allocation range that a field's value can have, to be newly activated BWPcan provide flexibility without scheduling restrictions as much as possible when allocating resources in. E.g, K<sub>current</sub> of length RA The resource allocation range that a field value can have is {0, 1, 2, ..., 9}ego, to be newly activated BWPWhen the size of is set to double case, RA of the field LSBto '0'to be newly activated by adding BWPresource allocation range in {0, 2, 4, 6, 8, 10, ..., 18}can be done with. by doing this, BWP Even when switching is performed, the newly activated BWPIt can provide flexibility in resource allocation without scheduling restrictions as much as possible..
another example, the terminal K<sub>RBG_set</sub>-K<sub>current</sub>doggy 0 middle Pdoggy 0second K<sub>current</sub> of length RA front of the field(most significant bit, MSB, front)paste on, Qdoggy 0second K<sub>current</sub> of length RA behind the field(least significant bit, LSB, back)can be pasted on. here, P+Q=K<sub>RBG_set</sub>-K<sub>current</sub>am. P (or Q)Is Rsecond (K<sub>RBG_set</sub>-K<sub>current</sub>+1)can be obtained from the remainder of dividing by. here, Ris the terminal C-RNTIcan be obtained from. E.g, P=C-RNTI mod (K<sub>RBG_set</sub>-K<sub>current</sub>+1), Q=K<sub>RBG_set</sub>-K<sub>current</sub>-Pcan be obtained with. In addition, Ris the terminal C-RNTI and the slot index.. E.g, P=(C-RNTI+n<sub>s</sub>) mod (K<sub>RBG_set</sub>-K<sub>current</sub>+1), Q=K<sub>RBG_set</sub>-K<sub>current</sub>-Pcan be obtained with. here, n<sub>s</sub>represents the slot index.. PA random number in the expression to obtain(random number)can be added additionally.
<u>Example 2: RIV(Resource Indication Value) based scheduling</u>
As a method for indicating continuously allocated resources LTEin RIV method was used. LTEof DL type-2 In resource allocation RIV sequentially using the method RBhas been assigned. more specifically, PDCCH DCI format, 1A, 1B, 1Dclass EPDCCH DCI format 1A, 1B, 1D, and MPDCCH DCI format 6-1Asilver RIV has a value, RIV start with value RB index RB<sub>start</sub>assigned consecutively with RB Count L<sub>CRBs</sub>can find out. here, RBIs VRB(Virtual Resource Block) or PRB(Physical Resource Block)can mean. existing LTEat RIV The value is set as.
<maths num="1"><img file="KR20200099581A_D0013.tif" /></maths>
here, N<sup>DL</sup><sub>RB</sub>Is DL BW(bandwidth)of RB is the number. in uplink RIV-When the base resource allocation method is used, N<sup>DL</sup><sub>RB</sub>Is UL BWof RB Count N<sup>UL</sup><sub>RB</sub>can be replaced with. BWPis set, DL BWWow UL BWare each DL BWPWow UL BWPcan be replaced with.
here, RIVIs 0,1,...,N<sup>DL</sup><sub>RB</sub>*(N<sup>DL</sup><sub>RB</sub>+1)/2-1has a value of. thus, existing LTEat RIVThe number of bits required to represent ceil(log<sub>2</sub>(N<sup>DL</sup><sub>RB</sub>*(N<sup>DL</sup><sub>RB</sub>+1)/2))is defined as.
do 14Is RIV Illustrating resource allocation according to the method. do 14refer to, RB number 5individual case, N<sub>RB</sub>*(N<sub>RB</sub>+1)/2=15am. thus, RIVIs 0,1,...,14has a value of, RIVis the number of bits needed to represent 4is a dog. RB<sub>start</sub>=0, L<sub>CRBs</sub>=3if, formula 1Depending on the RIVIs 10have. the terminal RIV=10after receiving, formula 1based on the relationship of RIV=10to satisfy RB<sub>start</sub>, L<sub>CRBs</sub>can decide. finally, the terminal RB<sub>start</sub>=0, L<sub>CRBs</sub>=3corresponding to {RB #0~2}this data(Yes, PDSCH or PUSCH) send/It can be seen that it is allocated for reception. similarly, RB<sub>start</sub>=2 and L<sub>CRBs</sub>=2if, RIVIs 7have. the terminal RIV=7after receiving, RB<sub>start</sub>=2, L<sub>CRBs</sub>=2corresponding to {RB #2~3}transfer this data/It can be seen that it is allocated for reception.
as described above, Different BWPis a different number of PRBcan be configured to have. RIV in the way, RA The number of bits required for a field is BWPband size of(Yes, RB Count)depends on one BWPfrom one to the other BWPto schedule RA We need to solve the problem of different lengths of fields.
below, to solve the above problem, DCIfrequencies included in-domain RA length of field(Yes, number of bits)is active DL BWP (or, activation UL BWP)When it is different from the length required to indicate the frequency resource region allocation information of, activation DL BWP (or, activation UL BWP)We propose a method for obtaining frequency resource region allocation information of. here, frequency-domain RA the value of the field is BWPdata from(PDSCH or PUSCH) Frequency resources allocated for transmission(Yes, RB set)can direct. the present invention RIV-based scheduling is used, DCIfrequencies included in-domain RA length of field(Yes, number of bits)is active DL BWP (or, activation UL BWP)It can be applied limitedly when it is different from the length required to indicate the frequency resource region allocation information of. here, DCIfrequencies included in-domain RA length of field(Yes, number of bits)is previously active BWP (or, Previously active UL BWP)of RB count or initial BWP (or, Early UL BWP)of RB It may be a value determined based on the number.
As an example of the present invention, The terminal is currently active BWPrequired for scheduling RA according to field length DCI determine the length, determined DCI using the length PDCCH Blind decoding can be performed. The terminal decodes DCIof BPI according to the value RAcan be interpreted differently. E.g, BPIis currently active BWPif instructed, the terminal RA The value of the field currently active BWPfor RIV interpreted as a value. On the other hand, BPIis currently active BWPto be newly activated other than BWPif instructed, the terminal RA The value of the field to be newly activated BWPfor RIV can be interpreted as a value. At this time, DCIincluded in RA the length of the field K<sub>current</sub>say, to be newly activated BWPrequired for scheduling RA the length of the field K<sub>new</sub>let's say. E.g, K<sub>current</sub> = ceil(log<sub>2</sub>(N<sub>current</sub>*(N<sub>current</sub>+1)/2))ego, K<sub>new</sub> = ceil(log<sub>2</sub>(N<sub>new</sub>*(N<sub>new</sub>+1)/2)can be obtained with. here, N<sub>current</sub>Is PDCCHto receive BWP(In other words, currently active BWP)included in RBis the number of, N<sub>new</sub>will be newly activated BWPincluded in RBis the number of. here, K<sub>current</sub>go K<sub>new</sub>greater than or equal to, RA of the field K<sub>new</sub> Bits will be newly activated BWPof RIV value (directly) can be used to indicate. and, Remainder K<sub>current</sub>-K<sub>new</sub> beat(field)Is 0 or 1reserved to(reserved)can be. E.g, RA of the field K<sub>new</sub> Bits will be newly activated BWPfor RIV When indicating a value, RB<sub>start</sub>Wow L<sub>CRB</sub>can have the following values.
- RB<sub>start</sub> = {0, 1, 2, ..., N<sub>new</sub>-1}, L<sub>CRB</sub> = {1, 2, 3, ..., N<sub>new</sub>}
here, N<sub>new</sub> N<sub>current</sub>ego, L<sub>CRB</sub> N<sub>new</sub> - RB<sub>start</sub>am.
Meanwhile, K<sub>current</sub>go K<sub>new</sub>if less than, The following options can be considered.
<u>measures 1</u>
K<sub>new</sub> > K<sub>current</sub>if, to be newly activated BWPof N<sub>new</sub> RBconsecutive among M RBchoose them, RA of the field K<sub>current</sub> the bits are Mconsecutive RBabout RIV can be interpreted as a value. Msilver K<sub>current</sub> ceil(log<sub>2</sub>(M*(M+1)/2))It can be determined as the largest value among integer values that satisfy. or, M = N<sub>current</sub>can be determined as. to be newly activated BWPof RB index 1,2,...,N<sub>new</sub> (or, 0,1,...,N<sub>new</sub>-1)let's say. to be newly activated BWPconsecutive selected from M RBthe beginning of RB (lowest RB with index RB, Yes, RB #A)will be newly activated BWPof RB #0can be expressed as an offset value of(Yes, RB #A = RB #0+offset). Note that, The offset value is 0,1,...,N<sub>new</sub>-M can have one of the values.
here, The offset value can be determined as follows.
- The offset value is a specific value, E.g 0can be fixed with.
- The offset value is PDCCHis currently active BWPthe lowest of PRB can be determined according to the index. E.g, currently active BWPthe lowest of PRBto be newly activated overlapping with BWPof PRBthe smallest of PRB index can be an offset value. overlapping PRBWithout it, the offset value is a specific value, E.g 0can be fixed with.
- The offset value is the currently active BWPthe largest of PRB can be determined according to the index. E.g, currently active BWPthe largest of PRBto be newly activated overlapping with BWPof PRBthe largest of PRB index (below, X)You can get the offset value from. Specifically, Offset is X-M or max(X-M,0)can be obtained with. overlapping PRBWithout it, the offset value is a specific value, E.g 0can be fixed with.
- The offset value is a specific value, For example, currently active BWPsmallest of PRB index and largest PRB can be determined according to the index. E.g, currently active BWPsmallest of PRBto be newly activated overlapping with BWPof PRBthe smallest of PRB index (below, Y)and currently active BWPthe largest of PRBto be newly activated overlapping with BWPof PRBthe largest of PRB index (below, X)You can get the offset value from. Specifically, Offset is ceil((X+Y)/2)-M or max(ceil((X+Y)/2)-M,0)can be obtained with. overlapping PRBWithout it, the offset value is a specific value, E.g 0can be fixed with.
- Offset is PDCCHis being received CORESETof CCE can be obtained from the index. E.g, offset = CCE_index mod (N<sub>new</sub>-M+1)can be obtained with. here, CCE_index is PDCCHis mapped to the smallest CCE index, biggest CCE index, or the smallest CCE index PDCCHaggregation level of(aggregation level)can be divided by.
- The offset is the terminal's C-RNTI or C-RNTIcan be determined from a value derived from. E.g, offset = C-RNTI mod (N<sub>new</sub>-M+1)can be composed of. thus, K<sub>current</sub>-beat RIV value is RB #(1+(C-RNTI mod (N<sub>new</sub>-M+1)))~RB #(M+(C-RNTI mod (N<sub>new</sub>-M+1)))of RBCan indicate whether to allocate resources. In addition, Offset is C-RNTIdoctor using-can be determined using a random sequence. E.g, offset = g(C-RNTI) mod (N<sub>new</sub>-M+1)can be composed of. here, g(C-RNTI)Is C-RNTIdoctor made using-a random sequence. here, Offset is C-RNTISince it is determined based on, Different UEs have different resource allocation due to the offset. However, This method is from the point of view of one terminal BWP In the same way regardless of the switching time RBreceive scheduling information for.
- The offset is the terminal's C-RNTIand slot index, or a value derived from a combination thereof.. E.g, offset = (n_slot+C-RNTI) mod (N<sub>new</sub>-M+1))can be composed of. here, n_slotsilver PDCCHThe index of the slot where is received, or PDSCHis the index of the allocated slot.. thus, K<sub>current</sub>-beat RIV value is RB #(1+((n_slot+C-RNTI) mod (N<sub>new</sub>-M+1)))~RB #(M+((n_slot+C-RNTI) mod (N<sub>new</sub>-M+1)))of RBCan indicate whether to allocate resources. another example, Offset is C-RNTIand Pseudo-Using Slot Index-can be determined using a random sequence. E.g, offset = (g(C-RNTI, n_slot) mod (N<sub>new</sub>-M+1))can be composed of. here, g(C-RNTI, n_slot)Is C-RNTIclass n_slotdoctor made using-a random sequence. here, Offset is C-RNTIAs well as BWP Because it is determined by the switching time, Different terminals have different resource allocations due to offsets at different times..
in front RB The offset of the unit has been described.. However, the above-mentioned method BWPdivided by-BWP (sub-BWP) can be extended to an offset in units. wealth-BWP The unit offset is, N<sub>new</sub>cast X PRBswealth with-BWPdivided by-BWPHow to indicate the index of. E.g, offset value 0back side-BPW#0means, offset value 1back side-BPW#1can mean. preferably X=Mcan be.
<u>measures 2-1</u>
K<sub>new</sub> > K<sub>current</sub>if, to be newly activated BWPof N<sub>new</sub> RBtie them up Mdoggy RB make a set, RA of the field K<sub>current</sub> the bits Mdoggy RB for the sets RIV can be interpreted as a value. here, RB set is consecutive RB(field)can be composed of. here, Msilver K<sub>current</sub> ceil(log<sub>2</sub>(M*(M+1)/2))can be set to the largest value among integers that satisfy. or, M = N<sub>current</sub>can be determined as. to be newly activated BWPof RB index 1,2,...,N<sub>new </sub>(or, 0,1,...,N<sub>new</sub>-1)let's say. N<sub>new</sub>doggy RBcast Mdoggy RB Here's how to tie it into a set:. first M1doggy RB each set ceil(N<sub>new</sub>/M)doggy RBtie up, after M-M1 RB each set floor(N<sub>new</sub>/M)doggy RBcan tie them up. here, M1silver M1 = N<sub>new</sub> mod Mam.
<u>measures 2-2</u>
K<sub>new</sub> > K<sub>current</sub>if, to be newly activated BWPof N<sub>new</sub> RBtie them up Mdoggy RB make a set, RA of the field K<sub>current</sub> the bits Mdoggy RB for the sets RIV can be interpreted as a value. RB set is consecutive RB(field)can be composed of. here, Msilver K<sub>current</sub> ceil(log<sub>2</sub>(M*(M+1)/2))to satisfy ceil(N<sub>new</sub>/2<sup>m</sup>) can be set to the largest value among. In other words, Mceil(N<sub>new</sub>/2<sup>m</sup>), msilver K<sub>current</sub> ceil(log<sub>2</sub>(ceil(N<sub>new</sub>/2<sup>m</sup>)*(ceil(N<sub>new</sub>/2<sup>m</sup>)+1)/2))can be set to the smallest value among integers that satisfy. to be newly activated BWPof RB index 1,2,...,N<sub>new</sub> (or, 0,1,...,N<sub>new</sub>-1)let's say. N<sub>new</sub> BWPcast Mdoggy RB Here's how to tie it into a set:. N<sub>new</sub>go 2<sup>m</sup>is a multiple of, Mdoggy RB each set 2<sup>m</sup>doggy RBcan tie them up. N<sub>new</sub>go 2<sup>m</sup>if not a multiple of, M-1doggy RB each set 2<sup>m</sup>doggy RBtie up, 1doggy RB the set N<sub>new</sub> mod 2<sup>m</sup>doggy RBcan tie them up.
<u>measures 2-3</u>
K<sub>new</sub> > K<sub>current</sub>if, to be newly activated BWPof N<sub>new</sub> RBtie them up Mdoggy RB make a set, RA of the field K<sub>current</sub> the bits Mdoggy RB for the sets RIV can be interpreted as a value. RB set is consecutive RB(field)can be composed of. here, Msilver K<sub>current</sub> ceil(log<sub>2</sub>(M*(M+1)/2))to satisfy floor(N<sub>new</sub>/2<sup>m</sup>) can be set to the largest value among. In other words, Mfloor(N<sub>new</sub>/2<sup>m</sup>), msilver K<sub>current</sub> ceil(log<sub>2</sub>(floor(N<sub>new</sub>/2<sup>m</sup>)*(floor(N<sub>new</sub>/2<sup>m</sup>)+1)/2))can be set to the smallest value among integers that satisfy. to be newly activated BWPof RB index 1,2,...,N<sub>new</sub> (or, 0,1,...,N<sub>new</sub>-1)let's say. N<sub>new</sub> BWPcast Mdoggy RB Here's how to tie it into a set:. N<sub>new</sub>go 2<sup>m</sup>is a multiple of, Mdoggy RB each set 2<sup>m</sup>doggy RBcan tie them up. N<sub>new</sub>go 2<sup>m</sup>if not a multiple of, Mdoggy RB each set 2<sup>m</sup>doggy RBtie up, terminal is left N<sub>new</sub>-(M*2<sup>m</sup>) PRBIt can be assumed that they are not scheduled.
<u>measures 3</u>
DCIof K<sub>current </sub>beat frequency-domain RA the value indicated in the field Alet's say. At this time, Acan have values 0,1,...,2^K<sub>current</sub>-1am. Meanwhile, to be newly activated BWPrequired for scheduling RIV value is 0,1,...,N<sub>new</sub>*(N<sub>new</sub>+1)/2)-1am. K<sub>new</sub> > K<sub>current</sub>if, to be newly activated BWPfor RIV value is RIV ceil(A*K), RIV = floor(A*K) or RIV = round(A*K)can be obtained with. K = (N<sub>new</sub>*(N<sub>new</sub>+1)/2)/(2^K<sub>current</sub>), K = ceil((N<sub>new</sub>*(N<sub>new</sub>+1)/2)/(2^K<sub>current</sub>)), K = floor((N<sub>new</sub>*(N<sub>new</sub>+1)/2)/(2^K<sub>current</sub>)) or K = round((N<sub>new</sub>*(N<sub>new</sub>+1)/2)/(2^K<sub>current</sub>))am.
<u>measures 4-1</u>
K<sub>new</sub> > K<sub>current</sub>if, K<sub>current</sub>-beat frequency domain RA The value of the field currently active BWP(In other words, PDCCHreceived BWP)for RIV start position assuming value S<sub>current</sub> (Yes, RB<sub>start,current</sub>)and length L<sub>current</sub> (Yes, L<sub>CRB,current</sub>)can decide. RB<sub>start,current</sub>Is {0,1,2,...,N<sub>current</sub>-1} has one of the values, L<sub>CRB,current</sub>Is {1,2,3,...,N<sub>current</sub>} can have one of the values. here, N<sub>current</sub>is currently active BWPincluded in (P)RBis the number of. along with this, the terminal RB<sub>start,current</sub>Wow L<sub>CRB,current</sub>to Kmultiply by, to be newly activated BWP(In other words, PDCCHof BPIinstructed by BWP)frequency resources allocated to(Yes, RB set)of RB starting position(RB<sub>start</sub>)continuous with RBnumber of(L<sub>CRB</sub>)can be obtained. E.g, RB<sub>start</sub> = ceil(K*RB<sub>start,current</sub>), RB<sub>start</sub> = floor(K*RB<sub>start,current</sub>) or RB<sub>start</sub> = round(K*RB<sub>start,current</sub>)ego, L<sub>CRB</sub> = ceil(K*L<sub>CRB,current</sub>), L<sub>CRB</sub> = floor(K*L<sub>CRB,current</sub>) or L<sub>CRB</sub> = round(K*L<sub>CRB,current</sub>)can be. here, K = N<sub>new</sub>/N<sub>current</sub>,<sub></sub>K = ceil(N<sub>new</sub>/N<sub>current</sub>), K = floor(N<sub>new</sub>/N<sub>current</sub>) or K = round(N<sub>new</sub>/N<sub>current</sub>)can be. KIs 2can be limited to the value of the power of(In other words, K = 1,2,...,2<sup>n</sup>)(nis a non-negative integer). Specifically, KIs (N<sub>new</sub>/N<sub>current</sub>)based on 2can have one of the values of the powers of, E.g K = 2^ceil(log<sub>2</sub>(N<sub>new</sub>/N<sub>current</sub>)) or K = 2^floor(log<sub>2</sub>(N<sub>new</sub>/N<sub>current</sub>))can have a value that satisfies.
Kgo 2If it has one of the powers of, RB<sub>start</sub> = (S<sub>current</sub> * K)ego, L<sub>CRB</sub> = (L<sub>current</sub> * K)can be. S<sub>current</sub> = {0, 1, 2, ..., N<sub>current</sub>-1}ego, L<sub>current</sub> = {1, 2, 3, ..., N<sub>current</sub>}is, RB<sub>start</sub>Wow L<sub>CRB</sub>can have the following values.
- RB<sub>start</sub> = {0, K, 2*K, ..., (N<sub>current</sub>-1)*K}
- L<sub>CRB</sub> = {K, 2*K, 3*K, ..., N<sub>current</sub>*K}
here, L<sub>CRB</sub> N<sub>current</sub>*K - RB<sub>start</sub>ego, KIs {1, 2, ...., 2<sup>n</sup>}can have one of the values of. nsilver 0 is more than an integer. KIs (N<sub>new</sub>/N<sub>current</sub>)can be determined based on. K = 2^ceil(log<sub>2</sub>(N<sub>new</sub>/N<sub>current</sub>)) or K = 2^floor(log<sub>2</sub>(N<sub>new</sub>/N<sub>current</sub>))can have a value that satisfies. for example, K value is (N<sub>new</sub>/N<sub>current</sub>)Based on this, it can be given as.
<tables num="5"><img file="KR20200099581A_D0014.tif" /></tables>
<tables num="6"><img file="KR20200099581A_D0015.tif" /></tables>
Note that, One BWPmaximum that can have PRBnumber of 275 PRBego, Ieast PRBthe number of SS/PBCH block occupied 20 PRBBecause of N<sub>new</sub>/N<sub>current</sub> value is 13.75 given below. thus, graph 5can be obtained from K value is 2, 4, 8, 16 is one of the values, graph 6can be obtained from K value is 1, 2, 4, 8 is one of the values.
<u>measures 4-2</u>
K<sub>new</sub> > K<sub>current</sub>if, K<sub>current</sub>-beat frequency domain RA the value of the field Mdoggy PRBwith BWPfor RIV interpreted as a value RB'<sub>start</sub> Wow L'<sub>CRB </sub>can be obtained. In other words, RB'<sub>start</sub>Is {0,1,2,...,M-1} has one of the values, L'<sub>CRB</sub>Is {1,2,3,...,M} can have one of the values. here, Msilver K<sub>current </sub> log<sub>2</sub>(M*(M+1)/2)may be the largest value among integers that satisfy. or, M = N<sub>current</sub>can be determined as. along with this, the terminal RB'<sub>start</sub>Wow L'<sub>CRB</sub>to Kmultiply by, to be newly activated BWP(In other words, PDCCHof BPIinstructed by BWP)frequency resources allocated to(Yes, RB set)of RB starting position and continuous RBcan find the number of. E.g, RB<sub>start</sub> = ceil(K*RB'<sub>start</sub>), RB<sub>start</sub> = floor(K*RB'<sub>start</sub>) or RB<sub>start</sub> = round(K*RB'<sub>start</sub>)ego, L<sub>CRB</sub> = ceil(K*L'<sub>CRB</sub>), L<sub>CRB</sub> = floor(K*L'<sub>CRB</sub>) or L<sub>CRB</sub> = round(K*L'<sub>CRB</sub>)can be. here, K = N<sub>new</sub>/M,<sub></sub>K = ceil(N<sub>new</sub>/M) or K = floor(N<sub>new</sub>/M) or K = round(N<sub>new</sub>/M)can be. KIs 2can be limited to the value of the power of. KIs (N<sub>new</sub>/M)based on 2can have one of the values of the powers of, E.g K = 2^floor(log<sub>2</sub>(N<sub>new</sub>/M)) or K = 2^ceil(log<sub>2</sub>(N<sub>new</sub>/M))am. For more details, see 4-1can refer to.
NR the system RBGbit using-When using map-based scheduling, One RBGincluded in RBnumber of(below RBG size)as 2, 4, 8, 16can use the value of. thus, measures 4-1/4-2like, Kcast 2In the case of limiting to the power of , different terminals of one cell can be easily multiplexed in the frequency domain.. Specifically, terminal AIs RBGbit using-map-based scheduling, RBG size 8let's say. Meanwhile, terminal Bhow to 4-1/4-2using Kgo 3let's say. Kgo 3Because of, terminal BIs K(=3)consecutive RBfield(below, RIV basic unit)are grouped together and used for resource allocation.. here, KIs 8is an example, not a factor of. in this case, RBG in RIV basic unit 2The dog is fully included, but, RIV basic unit 1Dogs are included. thus, terminal Ato RBGis assigned, terminal BIs RBGonly part of RIV Resources can be wasted because even basic units cannot be used. Contrary, RIV of the basic units 1the dog RBG Can partially overlap with two. in this case, terminal Bto RIV When basic units are assigned, terminal AIs RIV partially overlapped with the base unit RBG You can't use both, which can result in wastage of resources. On the other hand, Kcast 2Resources can be efficiently used between terminals when limited to a power of. E.g. terminal AIs RBGbit using-map-based scheduling, RBG size 8let's say. terminal Bhow to 4-1/4-2using Kgo 4let's say. Kgo 4Because of, terminal BIs 4consecutive RBfield(below, RIV basic unit)are grouped together and used for resource allocation.. here, KIs 2because it is a power of 8is a factor of. in this case, RBG in RIV basic unit 2Dogs are fully included, RIV There is no case where only some of the basic units are included. thus, terminal Ato RBGis assigned, terminal BIs RBG in RIV No resources are wasted as the base unit is never partially included. Contrary, RIV basic unit 1the dog RBG 1Can only overlap with dogs. in this case, terminal Bto RIV When a base unit is assigned, terminal AIs RIV overlapping the base unit RBG 1Can't use only dogs. Kgo 2If not given as a power of, 2doggy RBGcould not use, Kgo 2given as a power of 1doggy RBGresources can be used more efficiently.
Meanwhile, measures 4-1/4-2at Kcast 2The reason for limiting to the power of is to facilitate multiplexing between different terminals.. However, different terminals are different BWPwhile having, BWPthe lowest of RBtied from RBGor configure Kconsecutive PRBtie the RIV If you make up the basic unit, Kcast 2Even if it is limited to a power of , resource waste may occur. E.g, terminal Ago {PRB 0, 1, 2, 3, 4, 5, 6, 7}as one RBGeven if you configure, terminal Bgo K(=4)sign RIV in basic units {PRB 1, 2, 3, 4}class {PRB 5, 6, 7, 8}If you select, terminal Aone of RBGterminal on Bof RIV Two basic units are not fully covered. thus, between different terminals RBGWow RIV between basic units PRBmust match.
to solve the above problem, PRB grid(grid)will be newly activated taking into account BWP some of PRB(field)You can allocate resources only in. do 15(a)Is 2doggy PRBtie them up PRB An example of a grid configuration, Point Ais the upper layer(Yes, RRC) Indicated from the base station to the terminal through a signal. PRB of the grid RB index is common(common) PRB indicates the index. In other words, the terminal PRB taking into account the grid, to be newly activated BWP(N<sub>new</sub>dog PRBfield) Between N'<sub>new</sub>dog PRBcan only be scheduled. for example, do 15(b)Is N<sub>new</sub>dog PRBcomposed of BWPto foreshadow, do 15(c)Is PRB that can be scheduled in consideration of the grid N'<sub>new</sub>dog PRBto illustrate. PRB taking into account the grid, N<sub>new</sub> PRBcomposed of BWP Between N'<sub>new</sub>doggy PRBHow to select them will be described later.. When applying the suggested method, measures 4-1/4-2at RB<sub>start</sub>, L<sub>CRB</sub>, Kcan be transformed as. For more details, see 4-1/4-2can refer to. measures 4-3/4-4at, 'x'Is N<sub>new</sub>-N'<sub>new</sub>represents.
<u>measures 4-3: measures 4-1variant for</u>
- RB<sub>start</sub> = ceil(K*RB<sub>start,current</sub>)+x, floor(K*RB<sub>start,current</sub>)+x, round(K*RB<sub>start,current</sub>)+x
- L<sub>CRB</sub> = ceil(K*L<sub>CRB,current</sub>), floor(K*L<sub>CRB,current</sub>), round(K*L<sub>CRB,current</sub>)
- K = N'<sub>new</sub>/N<sub>current</sub>,<sub></sub>ceil(N'<sub>new</sub>/N<sub>current</sub>), floor(N'<sub>new</sub>/N<sub>current</sub>), round(N'<sub>new</sub>/N<sub>current</sub>)
KIs 2can be limited to the value of the power of. KIs (N'<sub>new</sub>/N<sub>current</sub>)based on 2can have one of the values of the powers of, E.g K = 2^ceil(log<sub>2</sub>(N'<sub>new</sub>/N<sub>current</sub>)) or K = 2^floor(log<sub>2</sub>(N'<sub>new</sub>/N<sub>current</sub>))can have a value that satisfies. Kgo 2If limited to the power of, RB<sub>start</sub> = (S<sub>current</sub> * K) + xego, L<sub>CRB</sub> = (L<sub>current</sub> * K)can be. RB<sub>start</sub>Wow L<sub>CRB</sub>can have the following values.
- RB<sub>start</sub> = {0+x, K+x, 2*K+x, ..., (N<sub>current</sub>-1)*K+x}
- L<sub>CRB</sub> = {K, 2*K, 3*K, ..., N<sub>current</sub>*K}
<u>measures 4-4: measures 4-2variant for</u>
- RB<sub>start</sub> = ceil(K*RB'<sub>start</sub>)+x, floor(K*RB'<sub>start</sub>)+x, round(K*RB'<sub>start</sub>)+x
- L<sub>CRB</sub> = ceil(K*L'<sub>CRB</sub>), floor(K*L'<sub>CRB</sub>), round(K*L'<sub>CRB</sub>)
- K = N'<sub>new</sub>/M,<sub></sub>ceil(N'<sub>new</sub>/M), floor(N'<sub>new</sub>/M), round(N'<sub>new</sub>/M)
KIs 2can be limited to the value of the power of. KIs (N'<sub>new</sub>/M)based on 2can have one of the values of the powers of, E.g K = 2^ceil(log<sub>2</sub>(N'<sub>new</sub>/M)) or K = 2^floor(log<sub>2</sub>(N'<sub>new</sub>/M))can have a value that satisfies. Kgo 2If limited to the power of, RB<sub>start</sub> = (K*RB'<sub>start</sub>) + xego, L<sub>CRB</sub> = (K*L'<sub>CRB</sub>)can be. RB<sub>start</sub>Wow L<sub>CRB</sub>can have the following values.
- RB<sub>start</sub> = {0+x, K+x, 2*K+x, ..., (M-1)*K+x}
- L<sub>CRB</sub> = {K, 2*K, 3*K, ..., M*K}
PRB consider the grid, N<sub>new</sub>dog PRBto be newly activated composed of BWP Between N'<sub>new</sub>dog PRBHere's how to select them. BWPof PRB index 0, 1, , N<sub>new</sub>-1let's say. the terminal PRB x, x+1, N<sub>new</sub>-1cast N'<sub>new</sub> PRBcan be selected with. In other words, the terminal PRBwith the highest index among them N'<sub>new</sub>doggy PRBcan choose. here, xIs PRB can be determined according to the grid. for example, RBG size 2sign PRB taking into account the grid, xThe value of the newly activated BWPthe lowest of PRBcommon of PRB if index is even 0and if odd 1can be. do 15refer to, terminal's lowest PRBcommon of PRB index is 5am. thus, x=1can be given as. common PRB Index is the upper layer(Yes, RRC)directed from point Afrom RBIt is an index numbered sequentially. One PRBcommon about PRB The index is configured for the terminal. BWPthe same regardless of. another example, newly activated BWPcan be configured in RBG size Rwhen you say, xis newly activated BWPthe lowest of PRBcommon of PRB index modulo R It can be the result of an operation. here, Ris formed from the upper layer. RBG can be any size. formed from the upper layer RBG If there is no size, Ris applicable BWPavailable in RBG can have the smallest value among the sizes.
measures 4-3 inside 4-4in BWPall of PRBThey cannot be used for scheduling and some PRBused only. BWPall of PRBThe method to use them for scheduling is as follows..
<u>measures 2-4: 2-1variant for</u>
K<sub>new</sub> > K<sub>current</sub>if, new BWPof N<sub>new</sub> RBtie them up Mdoggy RB make a set, RA of the field K<sub>current</sub> the bits Mdoggy RB for the sets RIV can be interpreted as a value. here, RB set is consecutive RB(field)can be composed of. to be newly activated BWPof RB index 1,2,...,N<sub>new </sub>(or, 0,1,...,N<sub>new</sub>-1)let's say. N<sub>new</sub>doggy RBcast Mdoggy RB Here's how to tie it into a set:. Kcast RB set should include RBLet it be the number of. remind K value is upper tier(Yes, RRC)or a value set from, N<sub>current</sub>Wow N<sub>new</sub> It can be a value obtained from a value. K value is the room 4-1table of 5 or 6can be determined as. N<sub>BWP</sub><sup>start</sup>common PRB Newly activated numbered from index BWPthe beginning of RBLet it be the index of. then, M = ceil((N<sub>new</sub>+(N<sub>BWP</sub><sup>start </sup>mod K))/K)can be determined as, First RB the set K-(N<sub>BWP</sub><sup>start </sup>mod K)doggy RBinclude those, last RB the set (N<sub>BWP</sub><sup>start</sup>+N<sub>new</sub>) mod K>0back side (N<sub>BWP</sub><sup>start</sup>+N<sub>new</sub>) mod Kdoggy RBincludes, Otherwise Kdoggy RBmay include. Remainder RB the set Kdoggy RBincludes. here, RBthe lowest RB group in order from index.
<u>measures 5-1</u>
Meanwhile, Another example of the present invention, K<sub>new</sub>>K<sub>current</sub>when, K<sub>current</sub>-beat frequency-domain RA The value of the field can be obtained from the following equation.
<maths num="2"><img file="KR20200099581A_D0016.tif" /></maths>
here, N<sub>new</sub>will be newly activated BWP(In other words, PDCCHof BPIinstructed by BWP)of (P)RB is the number, SIs {0,1,2,...,N<sub>new</sub>-1} is one of the values, Lsilver {1,2,3,...,A} is one of the values. S+Lsilver {0,1,...,N<sub>new</sub>} can have one of the values. RIV'Is {0,1,..., N<sub>new</sub>*A-(A-1)*A/2-1} has one of the values. AIs K<sub>current</sub> can be determined according to the bit. E.g, AIs K<sub>current</sub> log<sub>2</sub>(N<sub>new</sub>*A-(A-1)*A/2) Among the natural numbers that satisfy (N<sub>new</sub>not greater than) can be set to the largest value. the terminal A value and the newly activated BWPincluded in (P)RBnumber of N<sub>new</sub>using RIV'from SWow L can find out the value. the terminal SWow L to be newly activated from the value BWPof the frequency resources allocated to RB start and continuation RBcan find the number of. E.g, RB<sub>start</sub> = Sego, L<sub>CRB</sub> = ceil(L*K), L<sub>CRB</sub> = floor(L*K) or L<sub>CRB</sub> = round(L*K)can be. here, K = N<sub>new</sub>/A,<sub></sub>K = ceil(N<sub>new</sub>/A) or K = floor(N<sub>new</sub>/A)can be. KIs 2can be limited to the value of the power of. Specifically, KIs (N<sub>new</sub>/A)based on 2can have one of the values of the powers of, E.g, K = 2^floor(log<sub>2</sub>(N<sub>new</sub>/A)) or K = 2^ceil(log<sub>2</sub>(N<sub>new</sub>/A))am. According to this example, K<sub>current</sub>go K<sub>new</sub>even if it is smaller, can be scheduled RBThe starting position of the newly activated BWPall of PRBcan be.
<u>measures 5-2</u>
Another example of the present invention, K<sub>new</sub>>K<sub>current</sub>when, K<sub>current</sub>-beat frequency-domain RA The value of the field can be obtained from the following equation.
<maths num="3"><img file="KR20200099581A_D0017.tif" /></maths>
here, N<sub>new</sub>will be newly activated BWP(In other words, PDCCHof BPIinstructed by BWP)of (P)RB is the number, SIs {0,1,2,...,B} is one of the values, Lsilver {1,2,3,...,N<sub>new</sub>} is one of the values. S+Lsilver {0,1,...,N<sub>new</sub>}<sub></sub>can have one of the values. RIV''Is {0,1,..., N<sub>new</sub>*(B+1)-(B*(B+1)/2-1} has one of the values. BIs K<sub>current</sub> can be determined according to the bit. E.g, BIs K<sub>current</sub> log<sub>2</sub>(N<sub>new</sub>*(B+1)A-B*(B+1)/2) of non-negative integer values satisfying (N<sub>new</sub>smaller than) can be set to the largest value. the terminal B value and the newly activated BWPincluded in PRBnumber of N<sub>new</sub>using RIV''from SWow L can find out the value. the terminal SWow L to be newly activated from the value BWPof the frequency resources allocated to RB start and continuation RBcan find the number of. E.g, RB<sub>start</sub> = ceil(S*K), RB<sub>start</sub> = ceil(L*K) or RB<sub>start</sub> = floor(S*K)ego, L<sub>CRB</sub> = Lam. here, K = N<sub>new</sub>/(B+1),<sub></sub>K = ceil(N<sub>new</sub>/(B+1)) or K = floor(N<sub>new</sub>/(B+1))can be. KIs 2can be limited to the value of the power of. E.g, K = 2^floor(log<sub>2</sub>(N<sub>new</sub>/(B+1))) or K = 2^ceil(log<sub>2</sub>(N<sub>new</sub>/(B+1)))can be. According to this example, K<sub>current</sub>go K<sub>new</sub>even if it is smaller, A sequence that can be scheduled RBnumber of newly activated BWPof 1PRBfrom all PRBcan be.
Another example of the present invention, The terminal is currently active BWPof RA than the size of the field. BPIto be newly activated as indicated in BWPof RA If the field size is larger, bigger RA to fit the field size. '0'can be pasted. More specifically, the currently active BWPof RA the size of the field K<sub>current</sub>say, to be newly activated BWPof RA the size of the field K<sub>new</sub>when you say, the terminal DCIafter decoding, K<sub>new</sub>-K<sub>current</sub>doggy 0second K<sub>current</sub> of length RA after being put on the field, DCIfield value of(Yes, K<sub>new</sub> of length RA)can interpret. here, K<sub>new</sub>-K<sub>current</sub> doggy 0The following method can be considered in relation to the location of attaching.
for example, the terminal K<sub>new</sub>-K<sub>current</sub>doggy 0second K<sub>current</sub> of length RA front of the field(MSB front)can be pasted on. K<sub>current</sub> of length RA By using the resource allocation range that the field value can have(Yes, measures 4-1), currently active BWPto be newly activated within the resource allocation range that can have BWPperform resource allocation in, according to the methods described above RA back of the field(LSB back) K<sub>current</sub> Various reinterpretation of the resource allocation range that bits can have(reinterpretation) can do. E.g, resource allocation granularity(granularity)to perform resource allocation by increasing, currently active BWPhave the same resource allocation as, By setting the offset value for each terminal, it will be newly activated. BWPcan be set to shift resource allocation in.
another example, the terminal K<sub>new</sub>-K<sub>current</sub>doggy 0second K<sub>current</sub> of length RA behind the field(LSB back)can be pasted on. K<sub>current</sub> of length RA By subtracting some value from the resource allocation range that a field's value can have, to be newly activated BWPcan provide flexibility without scheduling restrictions as much as possible when allocating resources in. E.g, K<sub>current</sub> of length RA The resource allocation range that a field value can have is {0, 1, 2, ..., 9}ego, to be newly activated BWPWhen the size of is set to double case, RA of the field LSBto '0'to be newly activated by adding BWP resource allocation range in {0, 2, 4, 6, 8, 10, ..., 18}can be done with. by doing this, BWP Even when switching is performed, the newly activated BWPIt can provide flexibility in resource allocation without scheduling restrictions as much as possible..
another example, the terminal K<sub>new</sub>-K<sub>current</sub>doggy 0 middle Pdoggy 0second K<sub>current</sub> of length RA front of the field(MSB front)paste on, Qdoggy 0second K<sub>current</sub> of length RA behind the field(LSB back)can be pasted on. here, P+Q=K<sub>new</sub>-K<sub>current</sub>am. P (or Q)Is Rsecond (K<sub>new</sub>-K<sub>current</sub>+1)can be obtained from the remainder of dividing by. here, Ris the terminal C-RNTIcan be obtained from. E.g, P=C-RNTI mod (K<sub>new</sub>-K<sub>current</sub>+1), Q=K<sub>new</sub>-K<sub>current</sub>-Pcan be obtained with. In addition, Ris the terminal C-RNTI and the slot index.. E.g, P=(C-RNTI+n<sub>s</sub>) mod (K<sub>new</sub>-K<sub>current</sub>+1), Q=K<sub>new</sub>-K<sub>current</sub>-Pcan be obtained with. here, n<sub>s</sub>represents the slot index.. PA random number in the expression to obtain(random number)can be added additionally. In addition, P (or Q)Is RIVcan be determined according to the maximum value that can have. E.g, to be newly activated BWP(Yes, PDCCHof BPIinstructed by BWP)go N<sub>new</sub>doggy PRBwhen it consists of, able to have RIV value is 0,1,..., N<sub>new</sub>*(N<sub>new</sub>+1)/2-1am. here, RIV_max = N<sub>new</sub>*(N<sub>new</sub>+1)/2-1let's say. At this time, Q value is log<sub>2</sub>(RIV_max/(2^K<sub>current</sub>-1))can be given as the largest of the smaller integers. In other words, Qdoggy 0second K<sub>current</sub> of length RA behind the field(LSB back)obtained by pasting RIV value (00...0 ~ 11...1)will always be newly activated BWPof RIV can be within range.
Another example of the present invention, K<sub>new</sub>>K<sub>current</sub>when, RIV Terminals using the method RIV Value interpretation can be done as. In the above example, the terminal K<sub>new</sub>-K<sub>current</sub>doggy 0 middle Pdoggy 0second K<sub>current</sub> of length RA front of the field(MSB front)paste on, Qdoggy 0second K<sub>current</sub> of length RA behind the field(LSB back)can be pasted on. so obtained K<sub>new</sub>The value obtained by interpreting the bits RIV_templet's say. the terminal RIV_temp+Nsecond RIV_max+1the remainder divided by RIV value can be assumed. here, Nis a different value for each terminal, For example, the terminal C-RNTIcan be. In addition, Nis a different value for each slot, For example, it can be a slot index. In addition, Nis the terminal C-RNTI or slot index 2^Qcan be the remainder divided by.
Meanwhile, NR in the system RIV Frequency hopping can be configured for a terminal using the method. When frequency hopping is configured, PDSCH or PUSCHto schedule DCIto 1A bit frequency hopping flag may be sent. E.g, 1bit frequency hopping flag 0In this case, frequency hopping is not performed and 1Backside frequency hopping can be performed. if, 1bit frequency hopping flag 1back side, the terminal RA in the field 1 bit or 2Interpret bits as hopping-related information. E.g, BWPincludes PRBnumber of 50 PRBs if less than, RA in the field 1 Interpret bits as hopping-related information, BWPincludes PRBnumber of 50 PRBsif it exceeds RA in the field 2 Bits can be interpreted as hopping-related information. the terminal 1bit or 2Using bit hopping related information 2<sup>nd</sup> hopclass 1<sup>st</sup> hopinterracial PRB difference or PRB You can find the offset value. When instructed to do frequency hopping, the terminal PDSCH or PUSCHis divided in the time domain and 1<sup>st</sup> hopsilver RA directed from the field PRB(field)receive from/to send, behind 2<sup>nd</sup> hopsilver RA directed from the field PRBand above PRB obtained from the offset value PRB(field)receive from/can transmit.
similar to before, DCIincluded in RA the length of the field K<sub>current</sub>say, to be newly activated BWP(Yes, PDCCHof BPIdirected by new BWP)necessary for RA the length of the field K<sub>new</sub>let's say. K<sub>new</sub>K<sub>current</sub>if, The terminal can normally perform frequency hopping operation. E.g, as described above, 1bit frequency hopping flag 0In this case, frequency hopping is not performed and 1Backside frequency hopping can be performed. if, 1bit frequency hopping flag 1back side, As described above, the terminal RA in the field 1 bit or 2Bits can be interpreted as hopping-related information. Meanwhile, K<sub>new</sub>>K<sub>current</sub>if, The terminal may perform the following operations.
for example, K<sub>new</sub>>K<sub>current</sub>when, RIV It can be assumed that the terminal using the method does not always perform hopping.. thus, the terminal 1bit frequency hopping flag RA can be interpreted as fields. here, 1The bit frequency hopping flag is RA front of the field(MSB front)can be interpreted by putting. In addition, 1The bit frequency hopping flag is RA behind the field(LSB back)can be interpreted by putting.
another example, K<sub>new</sub>>K<sub>current</sub>when, RIV When the terminal using the method receives an instruction for frequency hopping,, the terminal RA in the field 1 bit or 2Bits can be interpreted as hopping-related information. The number of bits of hopping-related information is BWPmay vary depending on the bandwidth of. for example, Number of bits of hopping-related information(Yes, 1bit or 2beat)will be newly activated BWPcan be determined based on. E.g, The terminal will be newly activated BWPincludes PRBnumber of 50RB if less than 1Think of bits as hopping related information, 50RBif more 2You can think of bits as hopping related information.. another example, Number of bits of hopping-related information(Yes, 1bit or 2beat)is currently active BWPcan be determined based on. E.g, The terminal is currently active BWPincludes PRBnumber of 50RB if less than 1Think of bits as hopping related information 50RBif more 2You can think of bits as hopping related information..
Meanwhile, NR in the system RIV Terminals using the method VRB-to-PRB Mapping can be configured. VRB-to-PRB Once the mapping is configured, PUSCHto schedule DCIto 1beat VRB-to-PRB Mapping flags can be sent. E.g, VRB-to-PRB mapping flags 0back side VRB-to-PRB without mapping, 1back side VRB-to-PRB Mapping can be done. VRB-to-PRB When instructed to do the mapping, the terminal first RIV assigned from a value VRBcan be obtained. After that, the terminal VRBWow PRB The relationship between the two can be obtained through the block interleaver.. here, VRBIs PRBhas the same number as.
similar to before, DCIincluded in RA the length of the field K<sub>current</sub>say, to be newly activated BWP(PDCCHof BPIdirected by BWP)necessary for RA the length of the field K<sub>new</sub>let's say. K<sub>new</sub>K<sub>current</sub>if, terminal is normally VRB-to-PRB Mapping operations can be performed. E.g, as described above, the terminal VRB-to-PRB mapping flags 0back side VRB-to-PRB without mapping, 1back side VRB-to-PRB Mapping can be done. Meanwhile, K<sub>new</sub>>K<sub>current</sub>if, The terminal may perform the following operations.
for example, K<sub>new</sub>>K<sub>current</sub>when, RIV Terminals using the method are always VRB-to-PRB We can assume that we are not doing any mapping. or, terminal is always VRB-to-PRB We can assume that we do the mapping. thus, K<sub>new</sub>>K<sub>current</sub>when, RIV Terminals using the method 1beat VRB-to-PRB flag RA can be interpreted as fields. here, 1beat VRB-to-PRB flag is RA front of the field(MSB front)can be interpreted by putting. In addition, 1beat VRB-to-PRBIs RA behind the field(LSB back)can be interpreted by putting.
Meanwhile, As an example of the present invention, RIV Terminals using the method DCI my specific field(field) If this is configured as PDSCH or PUSCHIt can be determined that is not scheduled. On the other hand, The terminal will be newly activated BWP(Yes, PDCCHof BPIinstructed by BWP)activate BWPshould be assumed. In this way, the terminal is PDSCH or PUSCHwithout scheduling BWPcan be switched.
- option 1: RA all fields are bits 1made up of.
- option 2: RA all fields are bits 1is composed of, 5-beat MCS(Modulation and Coding Scheme) all fields are bits 1made up of.
- option 3: RA all fields are bits 1is composed of, 2-beat RV(Redundancy Version) all fields are bits 1made up of.
- option 4: RA all fields are bits 1is composed of, 5-beat MCS all fields are bits 1is composed of, 2-beat RV all fields are bits 1made up of.
Meanwhile, 3GPP NR In the system, the terminal PDSCHfallback scheduling DCI (or PUSCHfallback scheduling(fallback) DCI)can be configured to receive. E.g, PDSCHfallback scheduling DCIIs DCI format 1_0includes, PUSCHfallback scheduling DCIIs DCI format 0_0may include. At this time, fallback DCIis always RIV using the frequency domain resource allocation method of, frequency-domain RA length of field(Yes, number of bits)is the initial DL BWP (or, Early UL BWP)of PRB Depends on the number. E.g, Early DL BWP (or, Early UL BWP)go Ndoggy PRBif you have, fallback DCIfrequency of-domain RA length of field(Yes, number of bits)Is ceil(log<sub>2</sub>(N*(N+1)/2)))can be determined as. Generally, terminal activity DL BWP (or, activation UL BWP)of PRB number is initial DL BWP (or, Early UL BWP)of PRB because it is not equal to the number, activation DL BWP (or, activation UL BWP)Length of frequency resource allocation field required for frequency domain resource allocation of (or, number of bits)is a fallback DCILength of the frequency resource allocation field transmitted in (or, number of bits)may not be equal to. thus, The above problem can be solved equally in the way suggested above.. In other words, preceding statement(measures 1~5-2 etc)currently active in BWPis the initial BWPreplace with, to be newly activated BWP(PDCCHof BPIinstructed by BWP) is active BWPcan be used by replacing. E.g, measures 4-1when applied to, measures 4-1at RB<sub>start</sub>, L<sub>CRB</sub>, Kcan be transformed as. For more details, see 4-1can refer to.
<u>measures 4-5: measures 4-1variant for</u>
DCI my RA the length of the field K<sub>initial</sub> = ceil(log<sub>2</sub>(N<sub>initial</sub>*(N<sub>initial</sub>+1)/2))ego, activation BWPrequired for scheduling RA the length of the field K<sub>active</sub> = ceil(log<sub>2</sub>(N<sub>active</sub>*(N<sub>active</sub>+1)/2)can be obtained with. here, N<sub>initial</sub>is the initial BWPof (P)RB is the number, N<sub>active</sub>is active BWPof (P)RB is the number. K<sub>active</sub>>K<sub>initial</sub>if, activation BWPassigned to RB corresponding to the set RB<sub>start</sub>, L<sub>CRB</sub>can be determined as.
- RB<sub>start</sub> = ceil(K*RB<sub>start,initial</sub>), floor(K*RB<sub>start,initial</sub>), round(K*RB<sub>start,initial</sub>)
- L<sub>CRB</sub> = ceil(K*L<sub>CRB,initial</sub>), floor(K*L<sub>CRB,initial</sub>), round(K*L<sub>CRB,initial</sub>)
- K = N<sub>active</sub>/N<sub>initial</sub>,<sub></sub>ceil(N<sub>active</sub>/N<sub>initial</sub>), floor(N<sub>active</sub>/N<sub>initial</sub>), round(N<sub>active</sub>/N<sub>initial</sub>)
Kgo 2If limited to the power of, RB<sub>start</sub> = (S<sub>initial</sub> * K)ego, L<sub>CRB</sub> = (L<sub>initial</sub> * K)can be. RB<sub>start</sub>Wow L<sub>CRB</sub>can have the following values.
- RB<sub>start</sub> = {0, K, 2*K, ..., (N<sub>initial</sub>-1)*K}
- L<sub>CRB</sub> = {K, 2*K, 3*K, ..., N<sub>initial</sub>*K}
here, L<sub>CRB</sub> N<sub>initial</sub>*K - RB<sub>start</sub>ego, KIs {1, 2, ...., 2<sup>n</sup>}can have one of the values of. nsilver 0 is more than an integer. KIs (N<sub>active</sub>/N<sub>initial</sub>)can be determined based on. K = 2^ceil(log<sub>2</sub>(N<sub>active</sub>/N<sub>initial</sub>)) or K = 2^floor(log<sub>2</sub>(N<sub>active</sub>/N<sub>initial</sub>))can have a value that satisfies. for example, K value is (N<sub>active</sub>/N<sub>initial</sub>)Based on this, it can be given as
<tables num="7"><img file="KR20200099581A_D0018.tif" /></tables>
<tables num="8"><img file="KR20200099581A_D0019.tif" /></tables>
Note that, One BWPmaximum that can have PRBnumber of 275 PRBego, Early PRBthe minimum occupied by PRBnumber of 24 PRBBecause of N<sub>active</sub>/N<sub>initial</sub> value is 13.46 given below. thus, graph 7can be obtained from K value is 2, 4, 8, 16 is one of the values, graph 8can be obtained from K value is 1, 2, 4, 8 is one of the values.
do 16illustrates a data transmission process according to an embodiment of the present invention. do 16silver room 4-1class 4-5An example of the data transmission process according to. Specifically, do 16(a)illustrates an uplink data transmission process according to an embodiment of the present invention,, do 16(b)illustrates a downlink data transmission process according to an embodiment of the present invention.
do 16(a) and degrees 16(b)refer to, The terminal is scheduling information including resource allocation information(Yes,DCI)can receive(S1602). Scheduling information is uplink scheduling information(Yes, UL grant DCI)(Yes, DCI format 0_0, 0_1)include or(do 16(a)), Downlink Scheduling Information(Yes, DL grant DCI)(Yes, DCI format 1_0, 1_1)may include(do 16(b)). DCIIs PDCCHcan be received via. here, Resource allocation information is1 BWPbased on, Specifically, my1 BWPof RB determined by the number RIVincludes. after, The terminal uses the scheduling information to2 BWPuplink data from(Yes, PUSCH)send or, downlink data(Yes, PDSCH)can receive(S1604). Specifically, The terminal is2 BWPat RIVcorresponding to RB on the set PUSCHsend or(do 16(a)), PDSCHcan receive(do 16(b)). My2 BWPis within the scheduling information. BPIdirected by BWPthis, activation BWPcan be.
here, My2 BWPof RB the number is1 BWPof RB If more than the number, My2 BWPat RIVcorresponding to RB start of set RB index SWow RB Count Lcan each be given as one of the following values::
- start RB index S: {0, K, 2*K, ..., (N<sub>BWP1</sub>-1)*K}, and
- RB Count L: {K, 2*K, 3*K, ..., N<sub>BWP1</sub>*K}
here, N<sub>BWP1</sub>is the first1 BWPof RB is the number, KIs 2as a power value of (My2 BWPof RB Count/My1 BWPof RB Count)can be determined based on.
preferably, My1 BWPwow2 BWPmay contain any of the following:
1) (My1 BWP, My2 BWP) = (Early(initial) BWP, activation(active) BWP), and
2) (My1 BWP, My2 BWP) = (currently active BWP, newly activated BWP).
here, 1)In the case of, DCIis a fallback DCI(Yes, DCI format 0_0, 1_0)includes, DCIand data(Yes, PUSCH, PDSCH)is all my2 BWP(In other words, activation BWP)can be sent and received from. 2)In the case of, currently active BWPis the active time when the scheduling information is transmitted BWPego, to be activated BWPis within the scheduling information. BPIdirected by BWPam. In other words, 2)In the case of, BWP switching is involved, DCI(Yes, DCI format 0_0, 0_1, 1_0, 1_1)is the first1 BWPis received from, My2 BWPIs DCI undergarment BPIdirected by BWPcan be.
preferably, KIs (My2 BWPof RB Count/My1 BWPof RB Count)can have the following values according to:
<tables num="9"><img file="KR20200099581A_D0020.tif" /></tables>
here, XIs (My2 BWPof RB Count/My1 BWPof RB Count)ego, nsilver 0 is more than an integer.
preferably, RIVmay have a value satisfying the following expression:
- RIV = N<sub>BWP1</sub>*(L'-1)+S', if (L'-1)floor(N<sub>BWP1</sub>/2), and
- RIV = N<sub>BWP1</sub>*(N<sub>BWP1</sub>-L'+1)+(N<sub>BWP1</sub>-1-S'), if (L'-1)>floor(N<sub>BWP1</sub>/2),
here, L'silver L/Kas 1L'N<sub>BWP1</sub>-S'has a value of, S'Is S/Kam.
preferably, the above2 BWPof RB the number above1 BWPof RB equal to or less than the number, the above2 BWPabove in RIVcorresponding to RB start of set RB index SWow RB Count Lcan each be given as one of the following values::
- start RB index S: {0, 1, 2, ..., N<sub>BWP2</sub>-1}, and
- RB Count L: {1, 2, 3, ..., N<sub>BWP2</sub>},
here, N<sub>BWP2</sub>is the first2 BWPof RB is the number, N<sub>BWP2</sub>N<sub>BWP1</sub>am.
preferably, DCI undergarment RA the size of the field K<sub>BWP1</sub>say, My2 BWPrequired for scheduling RA the size of the field K<sub>BWP2</sub>when you say, K<sub>BWP1</sub><K<sub>BWP2</sub>if, the terminal DCIafter decoding, K<sub>BWP2</sub>-K<sub>BWP1</sub>doggy 0second K<sub>current</sub> of length RA after being put on the field, DCIfield value of(Yes, K<sub>BWP2</sub> of length RA)can interpret. for example, the terminal K<sub>BWP2</sub>-K<sub>BWP1</sub>doggy 0second K<sub>DCI</sub> of length RA front of the field(MSB front)can be pasted on.
<u>Example 3: UL BWP change</u>
Another problem to be solved in the present invention is that the terminal UL BWPto convey the switching information of DCIIn case of failure to receive. UL BWPto convey the switching information of DCIIs UL BWPfor BPImay include. in this case, the terminal DCIof BPIinstructed by UL BWPis active UL BWPcan be judged. the terminal PUSCHto schedule DCI (DCI format 0_1)to receive, remind DCILength of frequency domain resource allocation field included in(Yes, number of bits)should know. E.g, RA type 0 (beat-map method)The length of the frequency domain resource allocation field of the terminal set to is active UL BWPincluded in RBGequal to the number of, RA type 1 (RIV method)The frequency of the terminal set to-domain RA the length of the field ceil(log<sub>2</sub>(N_PRB*(N_PRB+1)/2)same as. here, N_PRBis active UL BWPof PRB is the number. In other words, the terminal PUSCH monitoring to receive scheduling information DCIlength of(Yes, number of bits)active to know UL BWPof PRB need to know the number. if, UL BWP directing the change DCIIf you fail to receive, The terminal was previously UL BWPof PRB according to the number DCI As we continue to monitor the length, transmitted from the base station. DCI(In other words, new UL BWPof PRB length determined by number DCI)There may be a problem that cannot receive.
to solve the above problems, PUSCHto schedule DCI (Yes, DCI format 0_1)what is the length of UL BWPis active UL BWPIt can be made independent of cognition. for example, PUSCHto schedule DCI (Yes, DCI format 0_1)the length of each UL BWPderived from DCI longest of length DCI Can be adjusted to the same length. E.g, certain UL BWPderived from DCIthe length of the longest DCIto match the length of DCI (Yes, DCI format 0_1)padding bit on(field)can be added. another example, PUSCHto schedule DCI (Yes, DCI format 0_1)specify the length of UL BWPderived from DCI Can be adjusted to the same length. here, certain UL BWPIs UL BWP the lowest index (or UL BWP ID)with UL BWPcan be. In addition, certain UL BWPis active DL BWP index of (or DL BWP ID)same as UL BWPcan be. Note that, The terminal is maximum in one cell 4doggy DL BWPWow UL BWPcast RRC It can be configured through a signal, When receiving the above configuration, BWPindex of (or ID)can be configured. activation UL BWP To find out frequency domain resource allocation information in, frequency-domain RA The field interpretation method is an example 1~2can use the method of.
Another example of the present invention, PUSCHto schedule DCI (Yes, DCI format 0_1)is the length of the active DL BWPcan be determined according to. E.g, which UL BWPis active UL BWPregardless of cognition, activation DL BWPof PRBaccording to the number of PUSCHto schedule DCI (DCI format 0_1)frequency of-domain RA length of field(Yes, number of bits)can be determined. activation UL BWP To find out frequency domain resource allocation information in, frequency-domain RA The field interpretation method is an example 1~2can use the method of.
Another example of the present invention, PDSCHto schedule DCI (Yes, DCI format 1_1)on any UL BWPis active UL BWPMay contain information about cognition. E.g, which UL BWPis active UL BWPmaximum to indicate cognition 2a bit DCIcan be included in. thus, PDSCHto schedule DCI (Yes, DCI format 1_1)if you have received, The terminal is DCIactivity as directed by UL BWPbased on PUSCHto schedule DCI (Yes, DCI format 0_1)can find the length of.
Another example of the present invention, PUSCHfallback scheduling DCI (Yes, DCI format 0_0)on any UL BWPis active UL BWPMay contain information about cognition. Note that, fallback DCIlength of(Yes, number of bits)is active UL BWP fixed regardless of size. thus, PUSCHfallback scheduling DCI (Yes, DCI format 0_0)if you have received, The terminal is DCIactivity as directed by UL BWPbased on PUSCHto schedule DCI (Yes, DCI format 0_1)can find the length of. here, PUSCHfallback scheduling DCI (Yes, DCI format 0_0)on any UL BWPis active UL BWPto indicate awareness 2bits can be added. Meanwhile, without extra bits, PUSCHfallback scheduling DCI (Yes, DCI format 0_0)By reinterpreting the different fields of UL BWPis active UL BWPcan dictate. E.g, fallback DCI (Yes, DCI format 0_0)of 5-beat MCS field and 2-beat RV If the values of the fields are a specific combination(Yes, 11111Wow 11), the terminal PUSCHdetermines that it is not scheduled, frequency-domain RA some bits in the field(field)which using UL BWPis active UL BWPcan determine whether.
Meanwhile, PUSCHfallback scheduling DCI (Yes, DCI format 0_0)to receive, the fallback DCIIs UL BWP change and PUSCH Paddy field directed to transfer-fallback DCI (Yes, DCI format 0_1)of PUSCH Can direct retransmission. in this case, The terminal is always-fallback DCIinstructed by UL BWP ignore the change, Prior UL BWPat PUSCHcan send. Meanwhile, UL BWP change and PUSCH Paddy field directed to transfer-fallback DCI (Yes, DCI format 0_1)if you do not receive, The terminal is currently UL BWPat PUSCHcan send.
<u>Example 4: SPS/CS PDSCH reception</u>
terminal is active DL BWPat DCIif not received for a certain period of time, Default to save power DL BWPcan be switched with. Specifically, the terminal PCell or SCellAbout RRC signal(Yes, <i>BWP-Inactivitytimer)</i>You can set the timer through. The terminal that has received the timer is set every 1ms (or, FR2(frequency 6GHz more than carrier)in 0.5ms)During DCIIf not received, the timer is incremented.. here, remind DCIin cells using unpaired spectrum DCI format 1_1class DCI format 0_1ego, In cells using paired spectrum, DCI format 1_1am. When the terminal's timer reaches a certain value, the terminal defaults DL BWPswitch to.
Meanwhile, the terminal RRC composed of signals (or RRC made up of signals L1 activated by a signal) PDSCHcan be configured to receive. this SPS(semi-persistent scheduling) or CS(configured scheduling)call it. Meanwhile, SPS/CS-base PDSCHis sent/if received, remind PDSCHcorresponding to DCIdoes not exist. thus, SPS/CSis set, the terminal PDSCHEven if you receive DCIdo not receive. thus, PDSCHeven if you receive, The timer configured for the terminal is increased, When a certain value is reached, the default DL BWPcan be switched with. In other words, the terminal RRC composed of signals (or RRC made up of signals L1 activated by a signal) PDSCHdefault despite the presence of DL BWPwill switch to. below, Describe how to solve the above problem.
As an example of the present invention, the terminal RRC composed of signals (or RRC made up of signals L1 activated by a signal) PDSCHis configured to receive, The terminal may not increase the timer. E.g, the terminal SPS/CS-base PDSCHDisable for(deactivation) or off(release)unless instructed to, without performing the timer operation, continue present BWPcan stay in. Meanwhile, SPS/CS-base PDSCHWhen instructed to disable or disable, The UE may perform a timer operation from that point.. At this time, Timer can be initialized and started.
Another example of the present invention, RRC composed of signals (or RRC made up of signals L1 activated by a signal) PDSCHis configured to receive, the terminal SPS/CS-base PDSCHIt is possible to determine whether to perform a timer operation according to the transmission period of. for example, The terminal may not perform a timer operation if the transmission period is longer than a predetermined size, but may perform a timer operation if it is shorter than a predetermined size. Contrary, The terminal may not perform a timer operation if the transmission period is shorter than a predetermined size, but may perform a timer operation if it is longer than a predetermined size.
Another example of the present invention, RRC composed of signals (or RRC made up of signals L1 activated by a signal) PDSCHis configured to receive, The terminal is PDSCH It is possible to determine whether to perform a timer operation according to the frequency allocation of. for example, The terminal is PDSCHThe frequency resource allocated to DL BWPIf included in , perform a timer action and, Otherwise, the timer operation may not be performed.. here, The terminal defaults according to the timer operation DL BWPEven if switching is performed, the terminal PDSCHcan receive.
Another example of the present invention, RRC composed of signals (or RRC made up of signals L1 activated by a signal) PDSCHA terminal configured to receive a always performs a timer operation and, Default based on timer action DL BWPwhen switched to, The terminal is PDSCHaccording to the frequency assignment of the above PDSCH You can decide whether to receive. for example, The terminal is PDSCHThe frequency resource allocated to DL BWPIf included in the default DL BWPAfter switching to PDSCHcan receive. Otherwise, terminal is default DL BWPAfter switching to PDSCHis disabled(deactivation) or release(release) It can be judged that.
<u>Example 5: resource allocation area</u>
Another problem to be solved by the present invention is to receive a broadcast channel of a base station., the terminal DCIfrequency of-domain RA how to interpret the field. here, The base station's broadcast channel is PDSCHis sent to, for transmitting a broadcast channel DCIIs SI-RNTI(System Information-RNTI) or P-RNTI (Paging-RNTI)scramble(or address) made DCIam. remind DCIIs DCI format 1_0 (fallback DCI)am. the terminal CORESETin the common search space of DCIto send PDCCHcan monitor.
remind DCIfrequency of-domain RA length of field(or, number of bits)is the initial DL BWPoccupied by PRBnumber of(N<sub>initial</sub>)can be determined according to. In other words, frequency-domain RA length of field(or, number of bits)Is K<sub>initial</sub>=ceil(log<sub>2</sub>(N<sub>intial</sub>*(N<sub>intial</sub>+1)/2))am. remind DCIfrequency of-domain RA field is RIV in a way PDSCHmay indicate resource allocation information in the frequency domain of. RIV value is PDSCHthe beginning of RBcontinuous with RBindicate the number of.
Generally, Initial operation of each terminal DL BWPcan be different. do 17refer to, terminal Aand terminal Bare different active DL BWPcan have. here, activation DL BWPis the terminal DL the band in which the signal must be received; or (continuous) PRBmeans a set of. do 17refer to, terminal AIs BWP#1this active DL BWPis set to, terminal BIs BWP#2this active DL BWPcan be set to. here, Two terminals are active DL BWP (BWP#1class BWP#2)can overlap each other. In addition, overlapping active DL BWPto CORESETby setting, Two terminals can be monitored. In other words, Two different terminals are active DL BWPeven if different, same CORESETcan monitor. In addition, Two different terminals are the same BWPcan have. E.g, during the initial connection RMSI(remaining minimum system information)to send PDCCHWow RMSIto send PDSCHto receive, the terminal PBCH(Physical Broadcast Channel)initial through DL BWPcan be set. In addition, the terminal RRC Default via signal DL BWPfall back BWPcan be set to. default DL BWPis set, The terminal is active for a certain period of time DL BWPat DCIdefault if not received DL BWPas BWPcan be switched.
to the next, CORESETon the broadcast channel DCIwhen receiving, the terminal DCIfrequency of-domain RA active from the field DL BWP The broadcast channel starts within PRB index(RB<sub>start</sub>)and length(L<sub>CRB</sub>)suggest a way to find out.
first, the terminal DCIfrequency of-domain RA Relative start from field PRB index(RB<sub>start,temp</sub>)and length(L<sub>CRB</sub>)can find out. for example, The terminal is initially DL BWPincluded in RBusing the number of RIV interpret the value RB<sub>start,temp</sub>Wow L<sub>CRB</sub>can be obtained. another example, terminal is max. RB Count Musing RIV interpret the value RB<sub>start,temp</sub>Wow L<sub>CRB</sub>can be obtained. Msilver K<sub>initial </sub>beat frequency-domain RA The maximum the field can represent PRB as a number, ceil(log<sub>2</sub>(M*(M+1)/2))ceil(log<sub>2</sub>(N<sub>initial</sub>*(N<sub>initial</sub>+1)/2))is the largest natural number that satisfies. or, M = N<sub>initial</sub>can be determined as. The terminal is a relative start PRB index(RB<sub>start,temp</sub>)active from DL BWP within the real PRB index(RB<sub>start</sub>)cast RB<sub>start</sub> = RB<sub>start_temp</sub>+Referencecan be obtained with. here, Referenceis a non-negative integer, which can be obtained as.
for example, do 18refer to, terminal is active DL BWPand early DL BWPaccording to the inclusion relationship between Referencecan get, Referenceactive using DL BWP where the broadcast channel is located within PRBstarting index of(RB<sub>start</sub>)can decide. Specifically, terminal activity DL BWPearly autumn DL BWPinclude completely, activation DL BWPand early DL BWPIf the subcarrier spacing of, terminal is active DL BWP early in the DL BWPoverlapping with PRBIt can be assumed that a broadcast channel can be transmitted in. In other words, Referenceis the initial DL BWPlowest common of RB index(CRB<sub>initial</sub>)with active DL BWPlowest common of RB index(CRB<sub>active</sub>)can be determined by. In other words, Reference = CRB<sub>initial</sub>-CRB<sub>active</sub>am. thus, activation DL BWP The broadcast channel starts within PRB index is RB<sub>start </sub>= RB<sub>start_temp</sub>+Reference = RB<sub>start_temp</sub>+CRB<sub>initial</sub>- CRB<sub>active</sub>can be determined as. here, CRB(common RB) The index is absolute in the frequency domain. Point ASubcarriers determined according to the subcarrier interval from 12bundled up RBis their index. here, CRB The subcarrier interval for determining the index is initially DL BWPwith active DL BWPequal to the subcarrier spacing of.
another example, do 19refer to, The terminal is currently DL BWPand early DL BWP according to the inclusion relationship between Referencecan get, Referenceactive using DL BWP where the broadcast channel is located within PRBstarting index of (RB<sub>start</sub>)can decide. Specifically, activation DL BWPearly autumn DL BWPdoes not completely include or(Yes, completely separated(disjoint) or partially overlapping(partially overlapped)), activation DL BWPand early DL BWPIf the subcarrier spacing of, The terminal schedules the broadcast channel. CORESETthis is located PRBThe broadcast channel is transmitted according to PRBcan be obtained. In other words, Referenceis the scheduled broadcast channel. CORESETlowest common of RB index (CRB<sub>CORESET</sub>)with active DL BWPlowest common of RB index (CRB<sub>active</sub>)can be determined by. In other words, Reference = CRB<sub>CORESET</sub>-CRB<sub>active</sub>am. thus, activation DL BWP The broadcast channel starts within PRB index is RB<sub>start </sub>= RB<sub>start_temp</sub>+Reference = RB<sub>start_temp</sub>+CRB<sub>CORESET</sub>-CRB<sub>active</sub>can be determined as.
another example, terminal is active DL BWPand one specific DL BWPaccording to the inclusion relationship between Referencecan get, Referenceactive using DL BWP where the broadcast channel is located within PRBstarting index of(RB<sub>start</sub>)can decide. Specifically, terminal activity DL BWPis specific DL BWPinclude completely, activation DL BWPand specific DL BWPIf the subcarrier spacing of, terminal is active DL BWP specific within DL BWPoverlapping with PRBIt can be assumed that a broadcast channel can be transmitted in. In other words, Referenceis specific DL BWPlowest common of RB index(CRB<sub>selected</sub>)with active DL BWPlowest common of RB index(CRB<sub>active</sub>) can be determined by car. In other words, Reference = CRB<sub>selected</sub>-CRB<sub>active</sub>am. thus, activation DL BWP The broadcast channel starts within PRB index is RB<sub>start </sub>= RB<sub>start_temp</sub>+Reference = RB<sub>start_temp</sub>+CRB<sub>selected</sub>-CRB<sub>active</sub>can be determined as. here, one specific DL BWPis the upper layer from the base station to the terminal(Yes, RRC) can be configured as a signal. In addition, one specific DL BWPis the upper layer from the base station to the terminal(Yes, RRC) Defaults configured as signals BWPcan be.
another example, do 19refer to, terminal is active DL BWPand one specific DL BWPaccording to the inclusion relationship between Referencecan get, Referenceactive using DL BWP where the broadcast channel is located within PRBstarting index of(RB<sub>start</sub>)can decide. Specifically, activation DL BWPis specific DL BWPdoes not completely include or(Yes, completely separated(disjoint) or partially overlapping(partially overlapped)), activation DL BWPand early DL BWPIf the subcarrier spacing of, The terminal schedules the broadcast channel. CORESETthis is located PRBThe broadcast channel is transmitted according to PRBcan be obtained. In other words, Referenceis the scheduled broadcast channel. CORESETlowest common of RB index(CRB<sub>CORESET</sub>)with active DL BWPlowest common of RB index(CRB<sub>active</sub>)can be determined by. In other words, Reference = CRB<sub>CORESET</sub>- CRB<sub>active</sub>am. thus, activation DL BWP The broadcast channel starts within PRB index is RB<sub>start </sub>= RB<sub>start_temp</sub>+Reference = RB<sub>start_temp</sub>+CRB<sub>CORESET</sub>-CRB<sub>active</sub>can be determined as. here, one specific DL BWPis the upper layer from the base station to the terminal(Yes, RRC) can be configured as a signal. In addition, one specific DL BWPis the upper layer from the base station to the terminal(Yes, RRC) Defaults configured as signals BWPcan be.
another example, The base station to the terminal Reference value in upper layer(Yes, RRC) can be configured as a signal. RRC composed of signals Reference active according to value DL BWP The broadcast channel starts within PRB index is RB<sub>start </sub>= RB<sub>start_temp</sub>+Referencecan be determined as.
another example, The base station provides the upper layer to the terminal.(Yes, RRC) as a signal Reference to derive the value CRB index(CRB<sub>reference</sub>)can be configured. CRB<sub>reference</sub>to transmit the broadcast channel PDSCHcan be located absolutely PRB is the index. thus, activation DL BWP The broadcast channel starts within PRB index is RB<sub>start </sub>= RB<sub>start_temp</sub>+Reference = RB<sub>start_temp</sub>+CRB<sub>reference</sub>-CRB<sub>active</sub>can be determined as. if, activation DL BWPis reminded CRB index(CRB<sub>reference</sub>)set to PRBdoes not include or, activation DL BWPgo CRB<sub>reference</sub>from to a certain length PRBIf they are not included, the terminal schedules the broadcast channel. CORESETthis is located PRBThe broadcast channel is transmitted according to PRBcan be obtained. In other words, Referenceis the scheduled broadcast channel. CORESETlowest common of RB index(CRB<sub>CORESET</sub>)with active DL BWPlowest common of RB index(CRB<sub>active</sub>)can be determined by. In other words, Reference = CRB<sub>CORESET</sub>-CRB<sub>active</sub>am. thus, activation DL BWP The broadcast channel starts within PRB index is RB<sub>start </sub>= RB<sub>start_temp</sub>+Reference = RB<sub>start_temp</sub>+CRB<sub>CORESET</sub>-CRB<sub>active</sub>can be determined as.
do 20illustrates signal transmission according to an embodiment of the present invention. do 20refer to, communication device is active BWPcorresponding to the resource allocation information in the frequency resource allocation region of RB You can check the set(S2002). E.g, The communication device is based on the starting point of the frequency resource allocation area RBafter indexing, Resource Allocation Information(Yes, beat-map, RIV)corresponding to RB You can check the set. here, If the condition is satisfied, The resource allocation area is initially BWPcan follow. thus, If the condition is satisfied, Resource allocation information is initial BWP undergarment RB corresponds to the set. here, the condition is (1) activation DL BWPearly autumn DL BWPinclude completely, (2) activation BWPand early BWPmay include those having the same subcarrier spacing of. after, The communication device corresponds to the resource allocation information. RB A set can transmit wireless signals.
do 21is a block diagram each showing the configuration of a terminal and a base station according to an embodiment of the present invention. In an embodiment of the present invention, the terminal may be implemented as various types of wireless communication devices or computing devices that ensure portability and mobility.. the terminal UE(User Equipment), STA(Station), MS(Mobile Subscriber) can be referred to as. In addition, In an embodiment of the present invention, a base station is a cell corresponding to a service area(Yes, macro cell, femtocell, picocell, etc.)control and supervise, signal transmission, Channel assignment, Channel monitoring, self-diagnosis, It can perform functions such as relaying. the base station gNB(next Generation NodeB) or AP(Access Point) can be referred to as.
as shown, A terminal according to an embodiment of the present invention(100)silver processor(110), communication module(120), Memory(130), user interface(140) and display unit(150)may include.
first, processor(110)executes various commands or programs and, terminal(100) Can process internal data. In addition, processor(100)is the terminal(100)Controls the entire operation including each unit of, Data transmission and reception between units can be controlled.. here, processor(110)may be configured to perform an operation according to an embodiment described in the present invention.. E.g, processor(110)Is BWPmake up, BWPreceive scheduling information for, Communication can be performed according to scheduling information.
to the next, communication module(120)may be an integrated module for performing wireless communication using a wireless communication network and wireless LAN access using a wireless LAN. For this purpose, the communication module(120)Silver Cellular Communication Interface Card(121, 122) and unlicensed band communication interface card(123)Multiple network interface cards such as(network interface card, NIC)may be provided in an internal or external form.. Communication module in the drawing(120)is shown as an integral integrated module, but, Each network interface card may be independently arranged according to a circuit configuration or purpose unlike the drawings..
Cellular Communication Interface Card(121)base station using mobile communication network(200), external device, transmit and receive wireless signals to and from at least one of the servers;, processor(110)on the basis of the order of1 Can provide cellular communication service by frequency band. According to one embodiment, Cellular Communication Interface Card(121)Is 6GHz at least one using a frequency band less than NIC can contain modules. Cellular Communication Interface Card(121)at least one of NIC the module is NIC the module supports 6GHz Independent base station according to cellular communication standard or protocol of less than frequency band(200), external device, capable of performing cellular communication with at least one of the servers;.
Cellular Communication Interface Card(122)base station using mobile communication network(200), external device, transmit and receive wireless signals to and from at least one of the servers;, processor(110)on the basis of the order of2 Can provide cellular communication service by frequency band. According to one embodiment, Cellular Communication Interface Card(122)Is 6GHz at least one using more than one frequency band NIC can contain modules. Cellular Communication Interface Card(122)at least one of NIC the module is NIC the module supports 6GHz Independent base station according to cellular communication standard or protocol of more than frequency band(200), external device, capable of performing cellular communication with at least one of the servers;.
Unlicensed band communication interface card(123)is the unlicensed band.3 base station using frequency band(200), external device, transmit and receive wireless signals to and from at least one of the servers;, processor(110)Provides communication services in unlicensed bands based on the order of. Unlicensed band communication interface card(123)is at least one of the unlicensed bands. NIC can contain modules. For example, unlicensed band 2.4GHz or 5GHzcan be a band of. Unlicensed band communication interface card(123)at least one of NIC the module is NIC Base station independently or subordinately according to the unlicensed band communication standard or protocol of the frequency band supported by the module(200), external device, Can perform wireless communication with at least one of the servers.
to the next, Memory(130)is the terminal(100)It stores the control program used in the. These control programs include(100)this base station(200), external device, A predetermined program necessary for performing wireless communication with at least one of the servers may be included..
to the next, user interface(140)is the terminal(100)Various types of mouths provided in/output means. In other words, user interface(140)can receive user input using various input means,, processor(110)is the terminal based on the received user input(100)can control. In addition, user interface(140)is a processor using various output means.(110)Can perform output based on the command of.
to the next, display unit(150)outputs various images on the display screen.. the display unit(150)silver processor(110)content or processor executed by(110)Various display objects such as a user interface based on the control command of.
In addition, Base station according to an embodiment of the present invention(200)silver processor(210), communication module(220) and memory(230)may include.
first, processor(210)executes various commands or programs and, base station(200) Can process internal data. In addition, processor(210)is the base station(200)Controls the entire operation including each unit of, Data transmission and reception between units can be controlled.. here, processor(210)may be configured to perform an operation according to an embodiment described in the present invention.. E.g, processor(210)Is BWPmake up, BWPsend scheduling information for, Communication can be performed according to scheduling information.
to the next, communication module(220)may be an integrated module for performing wireless communication using a wireless communication network and wireless LAN access using a wireless LAN. For this purpose, the communication module(120)Silver Cellular Communication Interface Card(221, 222) and unlicensed band communication interface card(223)A plurality of network interface cards such as can be provided in an internal or external form.. Communication module in the drawing(220)is shown as an integral integrated module, but, Each network interface card may be independently arranged according to a circuit configuration or purpose unlike the drawings..
Cellular Communication Interface Card(221)is the above-mentioned terminal using a mobile communication network(100), external device, transmit and receive wireless signals to and from at least one of the servers;, processor(210)on the basis of the order of1 Can provide cellular communication service by frequency band. According to one embodiment, Cellular Communication Interface Card(221)Is 6GHz at least one using a frequency band less than NIC can contain modules. Cellular Communication Interface Card(221)at least one of NIC the module is NIC the module supports 6GHz Independent terminal according to cellular communication standard or protocol of less than frequency band(100), external device, capable of performing cellular communication with at least one of the servers;.
Cellular Communication Interface Card(222)is a terminal using a mobile communication network(100), external device, transmit and receive wireless signals to and from at least one of the servers;, processor(210)on the basis of the order of2 Can provide cellular communication service by frequency band. According to one embodiment, Cellular Communication Interface Card(222)Is 6GHz at least one using more than one frequency band NIC can contain modules.Cellular Communication Interface Card(222)at least one of NIC the module is NIC the module supports 6GHz Independent terminal according to cellular communication standard or protocol of more than frequency band(100), external device, capable of performing cellular communication with at least one of the servers;.
Unlicensed band communication interface card(223)is the unlicensed band.3 terminal using frequency band(100), external device, transmit and receive wireless signals to and from at least one of the servers;, processor(210)Provides communication services in unlicensed bands based on the order of. Unlicensed band communication interface card(223)is at least one of the unlicensed bands. NIC can contain modules. For example, unlicensed band 2.4GHz or 5GHzcan be a band of. Unlicensed band communication interface card(223)at least one of NIC the module is NIC Terminal independently or subordinately according to the unlicensed band communication standard or protocol of the frequency band supported by the module(100), external device, Can perform wireless communication with at least one of the servers.
do 21terminal shown in(100) and base station(200)is a block diagram according to an embodiment of the present invention., Separately indicated blocks are logically separated and shown device elements.. Accordingly, the elements of the device described above may be mounted as one chip or a plurality of chips depending on the design of the device.. In addition, terminal(100)some configuration of, User interface for example(140) and display unit(150) etc. is a terminal(100)can be optionally provided in. In addition, user interface(140) and display unit(150) the base station(200)may be additionally provided as needed.
The foregoing description of the invention is for illustrative purposes only., Those of ordinary skill in the art to which the present invention pertains will understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention.. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.. E.g, Each component described as a single type may be implemented in a distributed manner., Likewise, components described as being dispersed may also be implemented in a combined form..
The scope of the present invention is indicated by the following claims rather than the above detailed description,, All changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention..
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Every citation, both ways
| Document | Relation | Office | Cited during |
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| WO2024172367A1 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| WO2024172619A1 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| KR20170113464A | Cites | Republic of Korea | Search report |
| 3GPP R1-1715487 | Non-patent | – | Search report |
| 3GPP R1-1716482 | Non-patent | – | Search report |
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| KR102411788B1 | Republic of Korea | B1 | |
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| US2024430881A1 | United States of America | A1 | |
| EP4496412A2 | European Patent Office (EPO) | A2 | |
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| EP4280779B1 | European Patent Office (EPO) | B1 | |
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Numbers
- Publication
- 10-2020-0099581
- Application
- 1020207021100
Titles4
- Korean
- 무선 통신시스템의 자원 할당 방법, 장치 및 시스템
- English
- Resource allocation method, apparatus and system of wireless communication system
- Unlabeled
- 무선 통신시스템의 자원 할당 방법, 장치 및 시스템
- Unlabeled
- Resource allocation method, apparatus and system of wireless communication system
Classification
- CPC, 12
- H04W72/042
- H04W72/232
- H04W72/0453
- H04W72/12
- H04L5/0007
- H04W72/1263
- H04L5/0092
- H04L5/001
- H04W72/23
- Y02D30/70
- H04L5/0098
- H04W72/04
- IPC, 3
- H04W72 04
- H04L5 00
- H04W72 12