Transmission method, base station, and terminal for dynamically adjusting beam collection

Transmission method, base station and terminal for dynamically adjusting beam set

0001This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on December 19, 2016, the application number is 201611180093.6, and the application name is "Transmission Method, Base Station and Terminal for Dynamically Adjusting Beam Sets", the entire content of which is incorporated by reference In this application.

Technical field

0002The present invention relates to the field of communication, in particular to a transmission method, base station and terminal for dynamically adjusting a beam set.

Background technique

0003The 5th Generation (5G) mobile communication system makes it possible for future mobile data traffic growth, massive Internet of Things, and diversified new services and application scenarios. In addition to acting as a unified connection framework, the basic 5G New Radio (NR) of the new generation of cellular networks is also expected to increase the data speed, capacity, delay, reliability, efficiency and coverage of the network to a whole new level. And will make full use of every bit of available spectrum resources. 5G based on Orthogonal Frequency Division Multiplexing (OFDM) new air interface design will become a global standard, supporting the diversified deployment of 5G equipment and covering a diversified spectrum (including coverage of low frequency bands and high frequency bands) , And support diversified services and terminals.

0004While high-frequency transmission provides more bandwidth, it also has its own unique problems, such as severe signal fading and poor penetration. At present, a massive (massive) multiple-input multiple-output (MIMO) beamforming (MIMO) beamforming transmission scheme is considered to enhance its coverage and overcome the problem of serious fading; time-frequency code block transmission diversity (Space frequency block transmission diversity) Code, SFBC), (semi)-open-loop, beam-cycling and other solutions are used to overcome the problem of reduced penetration caused by occlusion. In the above solution, the beams can be beams in different directions or different The beam combined by the beam in the direction.

0005The occlusion is often sudden, and the existing scheme adopts the means of semi-static beam adjustment. Semi-static adjustment refers to indicating the beam set through high-level signaling (for example, Radio Resource Control (RRC) signaling), and the beam set adjustment time is longer. Therefore, semi-static adjustment cannot completely eliminate the signal attenuation caused by occlusion. problem. The beams in the beam set are fixed for a period of time, even if one or several beams are blocked, they are still used to transmit signals. When the terminal detects data, it needs to detect most or all of the signals on each beam to obtain correct information through channel decoding. If one or several beams are blocked, the signal carried on it cannot be detected at all, and the terminal loses most of the information, and the correct information cannot be restored even through channel decoding. Especially in the scene of medium-to-high modulation code rate scheme (MCS) level transmission, the existing schemes basically cannot overcome the signal attenuation caused by occlusion.

0006Summary of the invention

0007The embodiment of the present invention provides a transmission method, a base station and a terminal for dynamically adjusting a beam set, which can solve the problem of signal attenuation caused by occlusion.

0008On the one hand, a transmission method for dynamically adjusting the beam set is provided. The base station sends the first indication information to the terminal through the first layer signaling, the first indication information is used to indicate the first beam set; the base station sends the second indication information to the terminal through the second layer signaling, and the second indication information is used to indicate the first At least one beam in a beam set; the base station uses at least one beam to send data to the terminal.

0009In the embodiment of the present invention, the base station sends beam information to the terminal through two-layer signaling, which can make the two-layer signaling transmission cycle different, thereby facilitating rapid beam adjustment, and reducing the signaling bits occupied by sending beam information, which can effectively Solve the problem of signal attenuation caused by occlusion.

0010In a possible implementation manner, the first layer signaling is higher layer signaling, and the second layer signaling is physical layer signaling or media access control (Media Access Control, MAC) layer signaling. According to this embodiment, the high-level signaling cycle is longer, and the physical layer signaling or MAC layer signaling cycle is shorter, which facilitates rapid beam adjustment.

0011In a possible implementation manner, after the base station uses at least one beam to send data to the terminal, the base station receives beam status information sent by the terminal, and the beam status information is used to indicate whether each beam in the at least one beam is available. According to this embodiment, the base station receives the beam state information fed back by the terminal, which is convenient for understanding the real-time channel conditions, so as to adjust the beam on a basis.

0012In a possible implementation manner, the first indication information is a beam index or a codebook index of each beam in the first beam set.

0013In a possible implementation manner, the second indication information adopts an indication manner based on a bitmap of the first beam set. According to this embodiment, the combination of the two kinds of indication information can reduce the signaling resources used for dynamically adjusting the beam.

0014In a possible implementation, at least one beam is two beams, and the base station determines two antenna ports based on the two beams; the base station transmits classification based on the two antenna ports through the time-frequency code block (Space frequency block code, SFBC) Technology to send data to the terminal.

0015In a possible implementation manner, the base station cyclically uses at least one beam to send data to the terminal, and uses a common port to send reference signals.

0016In a possible implementation manner, the base station cyclically uses at least one beam to send data and reference signals to the terminal.

0017On the other hand, a transmission method for dynamically adjusting the beam set is provided. The terminal receives the first indication information from the base station through the first layer signaling, the first indication information is used to indicate the first beam set; the terminal receives the second indication information from the base station through the second layer signaling, and the second indication information is used to indicate the first At least one beam in a beam set; the terminal receives data from the base station through the at least one beam.

0018In a possible implementation manner, the first layer signaling is high layer signaling, and the second layer signaling is physical layer signaling or MAC layer signaling.

0019In a possible implementation manner, after the terminal receives data from the base station through at least one beam, the terminal sends beam state information to the base station, and the beam state information is used to indicate whether each beam in the at least one beam is available.

0020In a possible implementation manner, the first indication information is a beam index or a codebook index of each beam in the first beam set.

0021In a possible implementation manner, the second indication information adopts an indication manner based on a bitmap of the first beam set.

0022In a possible implementation manner, at least one beam is two beams, and the terminal determines that the transmission method of the base station adopts SFBC technology; the terminal receives data from the base station based on two antenna ports.

0023In a possible implementation manner, the terminal determines that the transmission method of the base station is to cyclically use at least one beam to send data and use a common port to send reference signals; the terminal to cyclically use at least one beam to receive data from the base station and use the common port to receive reference signals .

0024In a possible implementation manner, the minimum resource unit for receiving data using the same beam includes at least one of the following: one resource element, one symbol, and one resource block.

0025In a possible implementation manner, the terminal receives from the base station through at least one beam the data and reference signals sent by the base station to the terminal by using the at least one beam cyclically.

0026In a possible implementation manner, the minimum resource unit of the same beam used for the received data and the reference signal is one resource block.

0027On the other hand, the embodiments of the present invention provide a base station, which can implement the functions performed by the base station in the above method design. The functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

0028In a possible design, the structure of the base station includes a processor and a communication interface, and the processor is configured to support the base station to perform corresponding functions in the foregoing method. The communication interface is used to support communication between the base station and the terminal or other entities. The base station may also include a memory, which is used for coupling with the processor, and stores the necessary program instructions and data of the base station.

0029In another aspect, an embodiment of the present invention provides a terminal, which can implement the functions performed by the terminal in the above method design. The functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

0030In a possible design, the structure of the terminal includes a processor and a communication interface, and the processor is configured to support the terminal to perform corresponding functions in the above method. The communication interface is used to support the communication between the terminal and the base station or other entities. The terminal may also include a memory, which is used for coupling with the processor, and stores the necessary program instructions and data of the terminal.

0031In another aspect, an embodiment of the present invention provides a communication system, which includes the base station and the terminal described in the foregoing aspect.

0032In another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the above-mentioned base station, which includes a program designed to execute the above-mentioned aspect.

0033In yet another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the above-mentioned terminal, which includes a program designed to execute the above-mentioned aspect.

0034In another aspect, an embodiment of the present invention provides a computer program product, which contains instructions, when the program is executed by a computer, the instructions cause the computer to perform the functions performed by the base station in the above method design.

0035On the other hand, an embodiment of the present invention provides a computer program product, which contains instructions. When the program is executed by a computer, the instructions cause the computer to perform the functions performed by the terminal in the above method design.

0036Compared with the prior art, in the embodiment of the present invention, the base station sends the first indication information to the terminal through the first layer signaling, and the first indication information is used to indicate the first beam set; the base station sends the first indication information to the terminal through the second layer signaling The second indication information is used to indicate at least one beam in the first beam set; the base station uses the at least one beam to send data to the terminal. It can be seen from the above that sending beam information to the terminal through two layers of signaling can make the two layers of signaling transmission cycle different, which facilitates rapid beam adjustment, and reduces the signaling bits occupied by sending beam information, which can effectively solve the occlusion zone. The signal attenuation problem.

Description of the drawings

0037Figure 1 is a schematic diagram of an application scenario based on a transmission method for dynamically adjusting a beam set provided by an embodiment of the present invention;

0038Figure 2 is a communication schematic diagram of a transmission method for dynamically adjusting a beam set according to an embodiment of the present invention;

0039Figure 3 is a schematic communication diagram of another transmission method for dynamically adjusting a beam set according to an embodiment of the present invention;

0040Figure 4 is a communication schematic diagram of another transmission method for dynamically adjusting a beam set according to an embodiment of the present invention;

0041Figure 5 is a communication schematic diagram of yet another transmission method for dynamically adjusting a beam set according to an embodiment of the present invention;

0042Figure 6 is a structural diagram of a base station provided by an embodiment of the present invention;

0043Figure 7 is a structural diagram of another base station provided by an embodiment of the present invention;

0044Figure 8 is a structural diagram of a terminal provided by an embodiment of the present invention;

0045FIG. 9 is a structural diagram of another terminal provided by an embodiment of the present invention.

Detailed ways

0046In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the drawings and embodiments in the embodiments of the present invention.

0047FIG. 1 is a schematic diagram of an application scenario based on a transmission method for dynamically adjusting a beam set provided by an embodiment of the present invention. 1, the MIMO communication technology is adopted between the base station 101 and the terminal 102. The base station 101 configures a set of N beams and instructs the terminal 102 through high-level signaling. The beams in the beam set can be indicated by a beam index or a codebook index, and the foregoing codebook index has a corresponding relationship with the beam. For example, the foregoing codebook index may be a precoding matrix indicator in a Long Term Evolution (LTE) system. (Precoding Matrix Indicator, PMI). The base station 101 dynamically indicates to the terminal 102 the M beams used in this transmission, where the M beams are a subset of the N beams. The base station 101 dynamically indicates the M beams used in this transmission, which can be indicated by an N-bit bitmap. The base station 101 uses M beams to transmit data cyclically, and the granularity of the data shaping may be at the resource element (RE) level, the symbol level, and the resource block level. Or the base station 101 performs transmit diversity transmission based on M beams. The terminal 102 receives beam configuration information from the base station 101, and detects data according to the beam configuration information. The terminal 102 performs measurement feedback based on the M beams dynamically indicated by the base station 101.

0048FIG. 2 is a communication schematic diagram of a transmission method for dynamically adjusting a beam set provided by an embodiment of the present invention. The method may be based on the application scenario shown in FIG. 1. Referring to FIG. 2, the method includes:

0049Step 201: The base station sends first indication information to the terminal through the first layer signaling, where the first indication information is used to indicate the first beam set.

0050In an example, the first layer signaling is high-level signaling, such as RRC signaling, and the high-level signaling is usually sent at a relatively long time interval.

0051In an example, the first indication information is a beam index or a codebook index of each beam in the first beam set.

0052Step 202: The terminal receives first indication information from the base station through the first layer signaling, and determines the first beam set according to the first indication information.

0053Step 203: The base station sends second indication information to the terminal through layer 2 signaling, where the second indication information is used to indicate at least one beam in the first beam set.

0054In an example, the second layer signaling is physical layer signaling or Media Access Control (Media Access Control, MAC) layer signaling, such as scheduling signaling. Physical layer signaling or MAC layer signaling is usually sent at a relatively long time interval. Short, easy to dynamically adjust the beam used.

0055In an example, the second indication information adopts an indication mode based on the bitmap of the first beam set. In this mode, 1 may be used to indicate that the beam is used, and 0 may be used to indicate that the beam is not used, or, You can pass 0 to indicate that the beam is used, and pass 1 to indicate that the beam is not used, which can effectively save signaling transmission resources.

0056Step 204: The terminal receives second indication information from the base station through the second layer signaling, and determines at least one beam in the first beam set according to the second indication information.

0057Step 205: The base station uses the at least one beam to send data to the terminal.

0058In an example, the at least one beam is two beams, and the base station determines two antenna ports based on the two beams; the base station transmits classification (Space) based on the two antenna ports through time-frequency code blocks. Frequency block code (SFBC) technology sends data to the terminal.

0059In another example, the base station cyclically uses the at least one beam to send data to the terminal, and uses a common port to send reference signals. Wherein, the minimum resource unit that uses the same beam to transmit the data includes at least one of the following: one resource element, one symbol, and one resource block. When more beams are used to send data to the terminal, the use of a common port to send reference signals can reduce the number of ports for sending reference signals, effectively saving transmission resources.

0060In yet another example, the base station cyclically uses the at least one beam to send data and reference signals to the terminal. Preferably, the minimum resource unit for transmitting the data and the reference signal using the same beam is one resource block. If multiple beams can be contained in the same resource block, and each beam needs a corresponding reference signal to be sent, the overhead of the reference signal will be very large. Therefore, selecting the smallest resource unit as a resource block can minimize the overhead of the reference signal.

0061Step 206: The terminal receives data from the base station through the at least one beam.

0062In the embodiment of the present invention, the base station may send a signaling indicating the transmission method to the terminal, and the terminal determines the transmission method of the base station according to the signaling.

0063In an example, the at least one beam is two beams, and the terminal determines that the transmission method of the base station adopts the SFBC technology; the terminal receives data from the base station based on two antenna ports.

0064Among them, the base station can send a signaling indicating the transmission method to the terminal, and the terminal determines that the transmission method of the base station uses the SFBC technology according to the signaling. In addition, one antenna port corresponds to one beam. The reference signal of each antenna port occupies a specific resource. The terminal detects the reference signal on each antenna port on a specific resource to obtain the channel information on the corresponding antenna port or beam. For data, the data of each antenna port is mapped on the corresponding time-frequency domain resources according to predefined rules.

0065In another example, the terminal cyclically uses the at least one beam to receive data from the base station, and uses a common port to receive reference signals. Wherein, the minimum resource unit for receiving the data using the same beam includes at least one of the following: one resource element, one symbol, and one resource block.

0066For example, the terminal receives a reference signal sent by a common port from the base station; determines channel information according to the reference signal; determines the equivalent channel of the at least one beam according to the channel information and the beam information; by The equivalent channel receives data from the base station.

0067In yet another example, the terminal receives from the base station through the at least one beam the data and reference signals sent by the base station to the terminal using the at least one beam cyclically. Wherein, the minimum resource unit for receiving the data and the reference signal using the same beam is one resource block.

0068For example, the terminal receives a reference signal from the base station through the at least one beam; performs joint channel estimation on the reference signal in the minimum resource unit of the joint channel estimation; and receives data through the estimated channel.

0069Optionally, after step 206, the method further includes:

0070Step 207: The terminal sends beam status information to the base station, where the beam status information is used to indicate whether each beam of the at least one beam is available.

0071In an example, the beam state information is channel quality indication (CQI) information corresponding to each beam in the at least one beam.

0072In the embodiment of the present invention, the base station sends the information of the beam used for transmitting data to the terminal through two-layer signaling, which can make the transmission period of the two-layer signaling different, thereby facilitating rapid adjustment of the beam and reducing the information occupied by the beam information. Lingbit can effectively solve the problem of signal attenuation caused by occlusion.

0073Figure 3 is a communication schematic diagram of another transmission method for dynamically adjusting the beam set provided by an embodiment of the present invention. The method can be based on the application scenario shown in Figure 1 and specifically adopts SFBC technology when transmitting data. :

0074Step 301: The base station configures a beam set composed of N beams, and instructs it to the terminal through high-level signaling.

0075In an example, the beams in the beam set may be indicated by a beam index or a codebook index.

0076In an example, based on terminal feedback, the base station preferably selects N beams {beam1, beam2,...beam N} to form a beam set. Generally, there is a certain degree of spatial isolation between N beams.

0077In an example, the base station preferably prefers N beams, which may be based on the channel quality information of each beam fed back by the terminal. The channel quality information may include an indication of whether the CQI and/or the beam can continue to be used.

0078Among them, when the channel quality information only includes CQI, the lowest level of CQI can be parsed by the terminal as an indication that the beam cannot be used continuously.

0079Step 302: The terminal receives the high-level signaling sent by the base station, and determines a beam set composed of N beams according to the high-level signaling.

0080Step 303: The base station dynamically indicates to the terminal the 2 beams used in this transmission, where the 2 beams are a subset of the N beams.

0081In an example, the base station dynamically indicates the two beams used in this transmission, which can be indicated by an N-bit bitmap. For example, [101...0], the signaling length is N, where 1 indicates that the beam is used, and 0 indicates that the beam is not used.

0082Step 304: The terminal receives a dynamic indication from the base station, and determines 2 beams used in this transmission according to the dynamic indication, where the 2 beams are a subset of N beams.

0083In step 305, the base station virtualizes two antenna ports based on the beam indicated to the terminal in step 303. And SFBC transmission is performed based on the 2 antenna ports.

0084In step 306, the terminal detects the data sent by the base station according to the two beams used in this transmission determined in step 302 and step 304.

0085Step 307: After detecting the data, the terminal reports beam status information to the base station. The beam state information is used to indicate whether each beam of the above two beams can be used continuously.

0086In an example, when the terminal detects that the signal quality of the beam p is significantly worse than the signal quality of the beam q, or the signal quality of the beam is lower than the reception threshold, the terminal determines that the beam cannot be used.

0087In an example, the terminal reports the beam state information, which may adopt an N-bit bitmap (bitmap) mode.

0088In another example, the terminal performs measurement feedback based on two dynamically indicated beams. The measurement feedback refers to CQI measurement feedback based on the 2 beams.

0089Optionally, after step 307, it further includes:

0090Step 308: The base station adjusts the used beam according to the beam state information reported by the terminal.

0091For example, the beam set indicated by the base station to the terminal includes 10 beams, which are identified by beam 1 to beam 10, and the beams used for this transmission indicated by the base station to the terminal are beam 1 and beam 2. When 1 is not available, the base station can select a beam from beam 3 to beam 10 to replace beam 1, and instruct it to the terminal through scheduling signaling.

0092In the embodiment of the present invention, the base station dynamically adjusts the beam used by the SFBC to avoid using beams with severe fading to transmit data, which is beneficial to increase the data transmission rate.

0093Fig. 4 is a communication schematic diagram of another transmission method for dynamically adjusting the beam set provided by an embodiment of the present invention. The method can be based on the application scenario shown in Fig. Port transmission, referring to Figure 4, the method includes:

0094Step 401: The base station configures a set of N beams, and instructs it to the terminal through high-level signaling.

0095In an example, the beams in the beam set may be indicated by a beam index or a codebook index.

0096In an example, based on terminal feedback, the base station preferably selects N beams {beam1, beam2,...beam N} to form a beam set. Generally, there is a certain degree of spatial isolation between N beams.

0097In an example, the base station preferably prefers N beams, which may be based on the channel quality information of each beam fed back by the terminal. The channel quality information may include an indication of whether the CQI and/or the beam can continue to be used.

0098Among them, when the channel quality information only includes CQI, the lowest level of CQI can be parsed by the terminal as an indication that the beam cannot be used continuously.

0099Step 402: The terminal receives the high-level signaling sent by the base station, and determines a beam set composed of N beams according to the high-level signaling.

0100Step 403: The base station dynamically indicates to the terminal the M beams used in this transmission, where the M beams are a subset of the N beams.

0101In an example, the base station dynamically indicates the M beams used in this transmission, which can be indicated by an N-bit bitmap. For example, [101...0], the signaling length is N, where 1 indicates that the beam is used, and 0 indicates that the beam is not used.

0102Step 404: The terminal receives the dynamic indication information of the base station, and determines the M beams used in this transmission according to the dynamic indication information, where the M beams are a subset of the N beams.

0103In step 405, the base station cyclically uses the M beams indicated to the terminal in step 403 to transmit data, and sends a reference signal through a common port.

0104The granularity of data shaping can be RE level, symbol level or resource block level.

0105The above-mentioned circular use of beams can be, but not limited to, the following manners: for example, there are three beams of beams 1, 2, and 3, first use beam 1, then use beam 2, then use beam 3, and then use beam 1.

0106In step 406, the terminal detects the data sent by the base station according to the M beams used in this transmission determined in step 402 and step 404.

0107In an example, the terminal obtains an equivalent channel based on the channel information measured by the reference signal and the beam information indicated by the base station, and the equivalent channel is used for data detection.

0108Step 407: After detecting the data, the terminal reports beam status information. The beam state information is used to indicate whether each beam of the foregoing M beams can be used continuously.

0109In an example, when the terminal detects that the signal quality of the beam p is significantly worse than the signal quality of the beam q, or the signal quality of the beam is lower than the receiving threshold, the terminal determines that the beam cannot be used. For example, there are a total of M beams, and when the signal quality difference of any two beams is greater than the threshold, it is confirmed that the beam with poor signal quality cannot be used.

0110In an example, the terminal reports the beam state information, which may adopt an N-bit bitmap (bitmap) mode.

0111In another example, the terminal performs measurement feedback based on the dynamically indicated M beams. The measurement feedback refers to CQI measurement feedback based on the M beams.

0112Optionally, after step 407, it further includes:

0113Step 408: The base station adjusts the used beam according to the beam state information reported by the terminal.

0114For example, the beam set indicated by the base station to the terminal includes 10 beams, which are identified by beam 1 to beam 10, and the beams used for this transmission indicated by the base station to the terminal are beam 1, beam 2 and beam 3. When the information indicates that beam 1 and beam 2 are unavailable, the base station can select two beams from beam 4 to beam 10 to replace beam 1 and beam 2, and indicate to the terminal through scheduling signaling.

0115In the embodiment of the present invention, the base station dynamically adjusts the beam used for the cyclic use of the beam for data transmission, avoids using the beam with severe fading to transmit data, and is beneficial to increase the data transmission rate.

0116Fig. 5 is a communication schematic diagram of another transmission method for dynamically adjusting the beam set provided by an embodiment of the present invention. The method can be based on the application scenario shown in Fig. Together through the selected beam to send, referring to Figure 5, the method includes:

0117In step 501, the base station configures a set of N beams, and indicates to the terminal through high-level signaling.

0118In an example, the beams in the beam set may be indicated by a beam index or a codebook index.

0119In an example, based on terminal feedback, the base station preferably selects N beams {beam1, beam2,...beam N} to form a beam set. Generally, there is a certain degree of spatial isolation between N beams.

0120In an example, the base station preferably prefers N beams, which may be based on the channel quality information of each beam fed back by the terminal. The channel quality information may include an indication of whether the CQI and/or the beam can continue to be used.

0121Among them, when the channel quality information only includes CQI, the lowest level of CQI can be parsed by the terminal as an indication that the beam cannot be used continuously.

0122Step 502: The terminal receives the high-level signaling sent by the base station, and determines a beam set composed of N beams according to the high-level signaling.

0123Step 503: The base station dynamically indicates to the terminal the M beams used in this transmission, where the M beams are a subset of the N beams.

0124In an example, the base station dynamically indicates the M beams used in this transmission, which can be indicated by an N-bit bitmap. For example, [101...0], the signaling length is N, where 1 indicates that the beam is used, and 0 indicates that the beam is not used.

0125Step 504: The terminal receives the dynamic indication information of the base station, and determines the M beams used in this transmission according to the dynamic indication information, where the M beams are a subset of the N beams.

0126In step 505, the base station cyclically uses the M beams indicated to the terminal in step 503 to transmit data and reference signals.

0127In one example, the granularity of data shaping is at the resource block level, which can reduce resource consumption.

0128In step 506, the terminal detects the data sent by the base station according to the M beams used in this transmission determined in step 502 and step 504.

0129In an example, the terminal detects channel detection data based on the measurement of the reference signal. Among them, the granularity of joint channel estimation is consistent with the granularity of data shaping.

0130Step 507: After detecting the data, the terminal reports beam status information. The beam state information is used to indicate whether each beam of the foregoing M beams can be used continuously.

0131In an example, when the terminal detects that the signal quality of the beam p is significantly worse than the signal quality of the beam q, or the signal quality of the beam is lower than the receiving threshold, the terminal determines that the beam cannot be used. For example, there are a total of M beams, and when the signal quality difference of any two beams is greater than the threshold, it is confirmed that the beam with poor signal quality cannot be used.

0132In an example, the terminal reports the beam state information, which may adopt an N-bit bitmap (bitmap) mode.

0133In another example, the terminal performs measurement feedback based on the dynamically indicated M beams. The measurement feedback refers to CQI measurement feedback based on the M beams.

0134Optionally, after step 507, it further includes:

0135Step 508: The base station adjusts the used beam according to the beam state information reported by the terminal.

0136For example, the beam set indicated by the base station to the terminal includes 10 beams, which are identified by beam 1 to beam 10, and the beams used for this transmission indicated by the base station to the terminal are beam 1, beam 2 and beam 3. When the information indicates that beam 1 and beam 2 are unavailable, the base station can select two beams from beam 4 to beam 10 to replace beam 1 and beam 2, and indicate to the terminal through scheduling signaling.

0137In the embodiment of the present invention, the base station dynamically adjusts the beam used for the cyclic use of the beam for data transmission, avoids using the beam with severe fading to transmit data, and is beneficial to increase the data transmission rate.

0138The embodiment shown in FIG. 4 and the embodiment shown in FIG. 5 have different pilot patterns. The embodiment shown in FIG. 4 adopts a common pilot, the transmitting end and the pilot do not need to be shaped, and the receiving end, after detecting the pilot, needs to be further multiplied by the shaping matrix to obtain the equivalent channel of the data. The embodiment shown in FIG. 5 uses a shaped pilot, the transmitting end and the pilot need to be shaped, and the receiving end, after detecting the pilot, directly obtains the equivalent channel of the data. The above-mentioned pilot is the reference signal.

0139FIG. 6 is a structural diagram of a base station provided by an embodiment of the present invention. The base station is used to execute the transmission method for dynamically adjusting the beam set provided by the embodiment of the present invention. The base station includes: a processing module 601 and a communication module 602;

0140The processing module 601 is configured to control the communication module 602 to send first indication information to the terminal through layer 1 signaling, where the first indication information is used to indicate a first beam set; and control the communication module 602 to pass The second layer signaling sends second indication information to the terminal, where the second indication information is used to indicate at least one beam in the first beam set; and control the communication module 602 to use the at least one beam direction The terminal sends data.

0141In an example, the first layer signaling is high layer signaling, and the second layer signaling is physical layer signaling or MAC layer signaling.

0142In one example, the processing module 601 is further configured to control the communication module 602 to receive the beam status information sent by the terminal after controlling the communication module 602 to use the at least one beam to send data to the terminal , The beam state information is used to indicate whether each beam of the at least one beam is available.

0143In an example, the first indication information is a beam index or a codebook index of each beam in the first beam set.

0144In an example, the second indication information adopts an indication manner based on a bitmap of the first beam set.

0145In an example, the at least one beam is two beams, and the processing module 601 is specifically configured to determine two antenna ports based on the two beams; and control the communication module based on the two antenna ports 602 sends data to the terminal through SFBC technology.

0146In an example, the processing module 601 is specifically configured to control the communication module 602 to cyclically use the at least one beam to send data to the terminal, and use a common port to send a reference signal.

0147In an example, the processing module 601 is specifically configured to control the communication module 602 to cyclically use the at least one beam to send data and reference signals to the terminal.

0148The base station may also include a storage module 603 for storing program codes and data of the base station.

0149Among them, the processing module 601 may be a processor or a controller, for example, a central processing unit (Central Processing Unit, CPU), a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The communication module 602 may be a communication interface, a transceiver, a transceiver circuit, etc., where the communication interface is a general term and may include one or more interfaces. The storage module 603 may be a memory.

0150When the processing module 601 is a processor, the communication module 602 is a communication interface, and the storage module 603 is a memory, the base station involved in the embodiment of the present invention may be the base station shown in FIG. 7.

0151Referring to FIG. 7, the base station 700 includes a processor 702, a communication interface 703, and a memory 701. Optionally, the base station 700 may further include a bus 704. Among them, the communication interface 703, the processor 702, and the memory 701 can be connected to each other through a bus 704; the bus 704 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, abbreviated as PCI). EISA) bus, etc. The bus 704 can be divided into an address bus, a data bus, a control bus, and so on. For ease of presentation, only one thick line is used in Figure 7, but it does not mean that there is only one bus or one type of bus.

0152FIG. 8 is a structural diagram of a terminal provided by an embodiment of the present invention. The terminal is used to execute the transmission method for dynamically adjusting a beam set provided by an embodiment of the present invention. The terminal includes: a processing module 801 and a communication module 802;

0153The processing module 801 is configured to control the communication module 802 to receive first indication information from a base station through layer 1 signaling, where the first indication information is used to indicate a first beam set; and to control the communication module 802 to pass The second layer of signaling receives second indication information from the base station, where the second indication information is used to indicate at least one beam in the first beam set; and control the communication module 802 to use the at least one beam from The base station receives data.

0154In an example, the first layer signaling is high layer signaling, and the second layer signaling is physical layer signaling or MAC layer signaling.

0155In an example, the processing module 801 is further configured to control the communication module 802 to send beam state information to the base station after controlling the communication module 802 to receive data from the base station through the at least one beam, The beam state information is used to indicate whether each beam of the at least one beam is available.

0156In an example, the first indication information is a beam index or a codebook index of each beam in the first beam set.

0157In an example, the second indication information adopts an indication manner based on a bitmap of the first beam set.

0158In an example, the at least one beam is two beams, and the processing module 801 is specifically configured to determine that the transmission method of the base station adopts the SFBC technology; and the communication module 802 is controlled based on two antenna ports from the The base station receives the data.

0159In an example, the processing module 801 is specifically configured to determine that the transmission method of the base station is to use the at least one beam to transmit data and use a common port to transmit reference signals; control the communication module 802 to use the at least one beam to transmit data in a circular manner. One beam receives data from the base station and uses a common port to receive reference signals.

0160In an example, the processing module 801 is specifically configured to control the communication module 802 to receive from the base station through the at least one beam the data and reference sent by the base station to the terminal using the at least one beam cyclically. Signal.

0161The terminal may also include a storage module 803 for storing program codes and data of the terminal.

0162Wherein, the processing module 801 may be a processor or a controller, for example, a central processing unit (Central Processing Unit, CPU), a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The communication module 802 may be a communication interface, a transceiver, a transceiver circuit, etc., where the communication interface is a general term and may include one or more interfaces. The storage module 803 may be a memory.

0163When the processing module 801 is a processor, the communication module 802 is a communication interface, and the storage module 803 is a memory, the terminal involved in the embodiment of the present invention may be the terminal shown in FIG. 9.

0164Referring to FIG. 9, the terminal 900 includes a processor 902, a communication interface 903, and a memory 901. Optionally, the terminal 900 may further include a bus 904. Among them, the communication interface 903, the processor 902, and the memory 901 can be connected to each other via a bus 904; the bus 904 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, referred to as EISA) bus, etc. The bus 904 can be divided into an address bus, a data bus, a control bus, and so on. For ease of presentation, only a thick line is used in Figure 9, but it does not mean that there is only one bus or one type of bus.

0165Professionals should also be further aware that the units and algorithm steps of the examples described in the embodiments disclosed in this article can be implemented by electronic hardware, computer software, or a combination of the two, in order to clearly illustrate the hardware and software Interchangeability, in the above description, the composition and steps of each example have been generally described in accordance with the function. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods for each specific application to realize the described functions, but this realization should not be considered as going beyond the scope of the present invention.

0166A person of ordinary skill in the art can understand that all or part of the steps in the above-mentioned embodiment methods can be implemented by a program instructing a processor to complete, and the program can be stored in a computer-readable storage medium, and the storage medium is non-transitory ( non-transitory) media, such as random access memory, read only memory, flash memory, hard disk, solid state drive, magnetic tape, floppy disk, optical disc, and any combination thereof. The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto.