Mobile communication system, mobile station device, base station device and communication method
Abstract
Problem to be solved.To reduce control information for specifying a transmission method when transmitting uplink data and reception quality information and uplink data and ACK / NACK together, and to reduce a delay generated when the transmission method is changed. Then, the uplink data specified by the base station apparatus is provided with followability to the modulation method and coding rate.
Solution.A base station apparatus transmits to a mobile station apparatus including resource allocation information for specifying a time or frequency component for an uplink data channel in a signal permitting data transmission to the uplink, and the mobile station apparatus transmits the signal. From the resource allocation information, the resource amount of the reception quality information placed together with the uplink data in the uplink data channel is calculated so as not to exceed a predetermined value, and the reception quality information is combined with the uplink data with the calculated resource amount. Send to the base station equipment using the uplink data channel. [Selection diagram] Fig. 3

Term
3.3 yearsto projected expiry
Projected expiry 20 January 2030, counted from filing; an application has no term until it is granted.
- Priority and filed
- Published
- Today
- Projected expiry
15 claims: 10 independent, 5 dependent
- 1移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムであって、 前記基地局装置は、 上りリンクに対するデータ送信を許可する信号に、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を含めて前記移動局装置へ送信し、 前記移動局装置は、 前記リソース割り当て情報から、前記上りリンクデータチャネルに上りリンクデータと共に配置される受信品質情報のリソース量を、所定の値を上回らないように算出し、 前記算出されたリソース量で受信品質情報を前記上りリンクデータと共に前記上りリンクデータチャネルを使用して前記基地局装置へ送信することを特徴とする移動通信システム。
- 2移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムであって、 前記基地局装置は、 上りリンクに対するデータ送信を許可する信号に、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を含めて前記移動局装置へ送信し、 前記移動局装置は、 前記リソース割り当て情報から、前記上りリンクデータチャネルに上りリンクデータと共に配置される受信品質情報のリソース量を、所定の値を下回らないように算出し、 前記算出されたリソース量で受信品質情報を前記上りリンクデータと共に前記上りリンクデータチャネルを使用して前記基地局装置へ送信することを特徴とする移動通信システム。
- 3前記所定の値は、前記基地局装置から送信されるRRCシグナリングによって設定されることを特徴とする請求項1または請求項2記載の移動通信システム。
- 4移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムにおける移動局装置であって、 上りリンクに対するデータ送信を許可する信号に含まれる、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を前記基地局装置から受信する手段と、 前記リソース割り当て情報から、前記上りリンクデータチャネルに上りリンクデータと共に配置される受信品質情報のリソース量を、所定の値を上回らないように算出する手段と、 前記算出されたリソース量で受信品質情報を前記上りリンクデータと共に前記上りリンクデータチャネルを使用して前記基地局装置へ送信する手段と、を備えることを特徴とする移動局装置。
- 5移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムにおける移動局装置であって、 上りリンクに対するデータ送信を許可する信号に含まれる、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を前記基地局装置から受信する手段と、 前記リソース割り当て情報から、前記上りリンクデータチャネルに上りリンクデータと共に配置される受信品質情報のリソース量を、所定の値を下回らないように算出する手段と、 前記算出されたリソース量で受信品質情報を前記上りリンクデータと共に前記上りリンクデータチャネルを使用して前記基地局装置へ送信する手段と、を備えることを特徴とする移動局装置。
- 6前記所定の値は、前記基地局装置から送信されるRRCシグナリングによって設定されることを特徴とする請求項4または請求項5記載の移動局装置。
- 7移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムにおける基地局装置であって、 上りリンクに対するデータ送信を許可する信号に、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を含めて前記移動局装置へ送信する手段と、 前記移動局装置によって前記リソース割り当て情報から所定の値を上回らないように算出されたリソース量の受信品質情報が上りリンクデータと共に配置された前記上りリンクデータチャネルを前記移動局装置から受信し、前記上りリンクデータチャネルから前記受信品質情報を抽出する手段と、を備えることを特徴とする基地局装置。
- 8移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムにおける基地局装置であって、 上りリンクに対するデータ送信を許可する信号に、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を含めて前記移動局装置へ送信する手段と、 前記移動局装置によって前記リソース割り当て情報から所定の値を下回らないように算出されたリソース量の受信品質情報が上りリンクデータと共に配置された前記上りリンクデータチャネルを前記移動局装置から受信し、前記上りリンクデータチャネルから前記受信品質情報を抽出する手段と、を備えることを特徴とする基地局装置。
- 9前記所定の値を、RRCシグナリングによって設定することを特徴とする請求項7または請求項8記載の基地局装置。
- 10移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムにおける移動局装置の通信方法であって、 上りリンクに対するデータ送信を許可する信号に含まれる、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を前記基地局装置から受信し、 前記リソース割り当て情報から、前記上りリンクデータチャネルに上りリンクデータと共に配置される受信品質情報のリソース量を、所定の値を上回らないように算出し、 前記算出されたリソース量で受信品質情報を前記上りリンクデータと共に前記上りリンクデータチャネルを使用して前記基地局装置へ送信することを特徴とする通信方法。
- 11移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムにおける移動局装置の通信方法であって、 上りリンクに対するデータ送信を許可する信号に含まれる、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を前記基地局装置から受信し、 前記リソース割り当て情報から、前記上りリンクデータチャネルに上りリンクデータと共に配置される受信品質情報のリソース量を、所定の値を下回らないように算出し、 前記算出されたリソース量で受信品質情報を前記上りリンクデータと共に前記上りリンクデータチャネルを使用して前記基地局装置へ送信することを特徴とする通信方法。
- 12前記所定の値は、前記基地局装置から送信されるRRCシグナリングによって設定されることを特徴とする請求項10または請求項11記載の通信方法。
- 13移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムにおける基地局装置の通信方法であって、 上りリンクに対するデータ送信を許可する信号に、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を含めて前記移動局装置へ送信し、 前記移動局装置によって前記リソース割り当て情報から所定の値を上回らないように算出されたリソース量の受信品質情報が上りリンクデータと共に配置された前記上りリンクデータチャネルを前記移動局装置から受信し、前記上りリンクデータチャネルから前記受信品質情報を抽出することを特徴とする通信方法。
- 14移動局装置が基地局装置から受信した信号の品質を示す受信品質情報を前記基地局装置へ送信する移動通信システムにおける基地局装置の通信方法であって、 上りリンクに対するデータ送信を許可する信号に、上りリンクデータチャネルに対する時間または周波数成分を特定するリソース割り当て情報を含めて前記移動局装置へ送信し、 前記移動局装置によって前記リソース割り当て情報から所定の値を下回らないように算出されたリソース量の受信品質情報が上りリンクデータと共に配置された前記上りリンクデータチャネルを前記移動局装置から受信し、前記上りリンクデータチャネルから前記受信品質情報を抽出することを特徴とする通信方法。
- 15前記所定の値を、RRCシグナリングによって設定することを特徴とする請求項13または請求項14記載の通信方法。
Independent claims15
145 paragraphs, as filed
In the present invention, the mobile station apparatus measures the reception quality of the signal received from the base station apparatus and transmits the reception quality information to the base station apparatus, while the base station apparatus receives the reception quality information from the mobile station apparatus. The present invention relates to a mobile communication system that allocates resources based on the above, base station equipment and mobile station equipment applicable thereto, and a communication method.
Recently, the demand for data communication has been increasing in the field of mobile communication systems. Then, various technologies have been proposed that can obtain high frequency utilization efficiency in response to the increase in communication data due to the demand for data communication. OFDMA (Orthogonal Frequency Division Multiple Access) is one of the technologies to improve frequency utilization efficiency. This OFDMA relates to a modulation method technology when all cells communicate using the same frequency in a communication area composed of cells, and high-speed data communication can be realized.
In the scheduling of transmission packets in the OFDMA system, the mobile station device transmits CQI (Channel Quality Indicator), which is information indicating the reception quality of the downlink state in the broadband subcarrier, to the base station device, and the base station device moves each movement. A method of scheduling packets based on the CQI of a broadband subcarrier transmitted from a station device is known.
In addition, in scheduling transmission packets in an OFDM (Orthogonal Frequency Division Multiplexing) system that uses multiple subcarriers, each downlink channel state (frequency characteristics, that is, frequency-dependent transmission loss, etc.) in the mobile station device, etc. We also know the technology of evaluating the characteristics of each channel, transmitting information obtained by quantizing each channel state to the base station device, and determining the subcarrier to be assigned to each mobile station device based on the transmitted information. (Patent Document 1).
FIG. 14 is a diagram for explaining a communication method between a conventional base station device and a mobile station device. The mobile station device that receives the downlink information of the downlink used for the reception quality measurement from the base station device measures the reception quality of each channel based on the downlink information and creates a channel profile of the propagation path.
The channel profile created by the mobile station device is transmitted from the mobile station device to the base station device as reception quality information using the uplink. Based on the reception quality information, the base station apparatus performs adaptive modulation coding and frequency selection scheduling processing on the signal transmitted from the base station apparatus to the mobile station apparatus.
Evolved Universal Terrestrial Radio Access, which is being studied by the 3GPP (3rd Generation Partnership Project), an international standardization project, regarding the transmission of reception quality information to base station equipment by this mobile station equipment. Is studying transmission using a dedicated uplink control channel (Physical Uplink Control Channel: hereinafter referred to as "PUCCH"). It is also being considered to simultaneously transmit uplink data and reception quality information using an uplink data channel (Physical Uplink Shared Channel: hereinafter referred to as "PUSCH").
For example, in Non-Patent Document 1, when transmitting reception quality information from a mobile station device to a base station device, the reception quality information is transmitted using PUCCH or PUSCH depending on the type of service for which the required reception quality information is different. Proposals have been made to send.
<p><patcit num="1"><text>Japanese Patent Application Laid-Open No. 2005-130491</text></patcit></p>
<p><nplcit num="1"><text>CQI handling during DRX, 3GPP, TSG RAN WG2 Meeting # 58, R2-071901, May 2007</text></nplcit></p>
<p> However, in the conventional technique, there is no specific description regarding the arrangement of each information when the uplink data and the reception quality information are simultaneously transmitted from the mobile station device to the base station device.</p><p> Here, the arrangement of each information means that when the mobile station device simultaneously transmits uplink data and reception quality information to the base station device, each information (uplink data and reception quality information) is specified as transmission data. It shows how each piece of information is specifically arranged in a PUSCH resource unit (PUSCH time-minimum unit of frequency block).</p><p> When uplink data and reception quality information are simultaneously transmitted from the mobile station device to the base station device, the base station device separates each information by knowing the arrangement of the transmitted uplink data and reception quality information. Can be done. The base station apparatus extracts only the reception quality information from the uplink data and the reception quality information transmitted at the same time, and based on the extracted information, performs adaptive modulation coding and / or a frequency selection schedule. Downlink data can be transmitted efficiently.</p><p> The amount of information of the control signal from the base station device for designating the arrangement of the uplink data and the reception quality information transmitted simultaneously from the mobile station device must be kept small. If the mobile station device transmits a control signal that specifies the arrangement of each information from the base station device every time the reception quality information is transmitted, the downlink resource is wasted.</p><p> Further, there is a demand to reduce the delay when changing the arrangement of the uplink data and the reception quality information transmitted simultaneously from the mobile station apparatus. When uplink data and reception quality information are transmitted from the mobile station device at the same time, if there is a large delay in changing the arrangement of each information, there will be a large delay before the reception quality information is transmitted to the base station device. It will occur. The base station apparatus applies adaptive modulation coding and / or frequency selection scheduling to the downlink data according to the reception quality information transmitted from the mobile station apparatus.</p><p> If the transmission of reception quality information is accompanied by a large delay, the optimum modulation code for the mobile station apparatus and the optimum frequency band used for downlink data transmission will change. Even if the base station equipment performs adaptive modulation coding and / or frequency selection scheduling based on the reception quality information with a large delay, the control that is not suitable for the situation of the mobile station equipment at that time is performed. I will do it. This wastes downlink resources.</p><p> Further, the modulation method and the coding rate specified when transmitting the uplink data is such that the base station apparatus estimates the propagation path environment based on the uplink data and the reference signal transmitted from the mobile station apparatus. It is specified. That is, when the uplink data and the reception quality information are transmitted at the same time, the modulation method and the coding rate of the reception quality information may follow the modulation method and the coding rate of the uplink data specified by the base station apparatus. If this is not possible, the probability of successful transmission of reception quality information will decrease.</p><p> The same can be said for the HARQ (Hybrid Automatic Repeat Request) ACK / NACK for the downlink data, which is the same uplink information as the reception quality information, as described above. When uplink data and ACK / NACK are transmitted from the mobile station device to the base station device at the same time, the control signal from the base station device for specifying the arrangement must keep the amount of information small. Also, the delay in changing its placement should be small. Further, the ACK / NACK modulation method and code rate transmitted at the same time as the uplink data must follow the modulation method and code rate of the uplink data specified by the base station apparatus. When transmitting this uplink data and ACK / NACK at the same time, the amount of information of the control information that specifies the arrangement of each information, the delay that occurs when changing the arrangement of each information, the modulation method and coding of the uplink data. There is no specific description in the conventional technique regarding the followability to the rate.</p><p> That is, the important issue is how to specify the uplink data and reception quality information transmitted from the mobile station device to the base station device at the same time, and the transmission method of the uplink data and ACK / NACK. The amount of information of the control signal that specifies the arrangement of each information from the base station equipment, the delay that occurs when changing the arrangement of each information, and the modulation method and coding rate of the uplink data specified by the base station equipment. A form that considers the followability to is required.</p><p> The present invention has been made in view of such circumstances, and specifies a transmission method when the base station apparatus simultaneously transmits uplink data and reception quality information, and uplink data and ACK / NACK. The amount of control information for this is reduced, the delay that occurs when changing the transmission method is shortened, and the uplink has followability to the modulation method and coding rate of the uplink data specified by the base station device. It is an object of the present invention to provide a mobile communication system, a mobile station device, a base station device, and a communication method capable of realizing the arrangement of data and reception quality information and the arrangement of uplink data and ACK / NACK.</p>
<p> (1) In order to achieve the above object, the present invention has taken the following measures. That is, the mobile communication system of the present invention is a mobile communication system that transmits reception quality information indicating the quality of the signal received from the base station device by the mobile station device to the base station device, and the base station device is uplinked. The signal that permits data transmission to the link includes resource allocation information that specifies the time or frequency component for the uplink data channel and is transmitted to the mobile station device, and the mobile station device transmits the data from the resource allocation information to the uplink. The resource amount of the reception quality information arranged together with the uplink data in the link data channel is calculated so as not to exceed a predetermined value, and the reception quality information is calculated together with the uplink data with the calculated resource amount. It is characterized by transmitting to the base station apparatus using a channel.</p><p> (2) Further, the mobile communication system of the present invention is a mobile communication system in which the mobile station apparatus transmits reception quality information indicating the quality of the signal received from the base station apparatus to the base station apparatus, and the base station apparatus. Transmits to the mobile station device including resource allocation information that specifies a time or frequency component for the uplink data channel in a signal that allows data transmission to the uplink, and the mobile station device uses the resource allocation information. The resource amount of the reception quality information arranged together with the uplink data in the uplink data channel is calculated so as not to fall below a predetermined value, and the reception quality information is combined with the uplink data with the calculated resource amount. It is characterized by transmitting to the base station apparatus using an uplink data channel.</p><p> (3) Further, in the mobile communication system of the present invention, the predetermined value is set by RRC signaling transmitted from the base station apparatus.</p><p> (4) Further, the mobile station apparatus of the present invention is a mobile station apparatus in a mobile communication system in which the mobile station apparatus transmits reception quality information indicating the quality of a signal received from the base station apparatus to the base station apparatus. A means for receiving resource allocation information for specifying a time or frequency component for an uplink data channel included in a signal permitting data transmission to the uplink from the base station apparatus, and the uplink data channel from the resource allocation information. A means for calculating the resource amount of the reception quality information arranged together with the uplink data so as not to exceed a predetermined value, and the uplink data channel for receiving quality information together with the uplink data with the calculated resource amount. It is characterized by comprising means for transmitting to the base station apparatus using.</p><p> (5) Further, the mobile station apparatus of the present invention is a mobile station apparatus in a mobile communication system in which the mobile station apparatus transmits reception quality information indicating the quality of a signal received from the base station apparatus to the base station apparatus. A means for receiving resource allocation information for specifying a time or frequency component for an uplink data channel included in a signal permitting data transmission to the uplink from the base station apparatus, and the uplink data channel from the resource allocation information. A means for calculating the resource amount of the reception quality information arranged together with the uplink data so as not to fall below a predetermined value, and the uplink data channel for receiving quality information together with the uplink data with the calculated resource amount. It is characterized by comprising means for transmitting to the base station apparatus using.</p><p> (6) Further, in the mobile station apparatus of the present invention, the predetermined value is set by RRC signaling transmitted from the base station apparatus.</p><p> (7) Further, the base station apparatus of the present invention is a base station apparatus in a mobile communication system in which a mobile station apparatus transmits reception quality information indicating the quality of a signal received from the base station apparatus to the base station apparatus. A means for transmitting to the mobile station apparatus including resource allocation information for specifying a time or frequency component for the uplink data channel in a signal permitting data transmission to the uplink, and predetermined from the resource allocation information by the mobile station apparatus. The reception quality information of the resource amount calculated so as not to exceed the value of is received from the mobile station apparatus, and the reception quality information is extracted from the uplink data channel. It is characterized by providing means for doing so.</p><p> (8) Further, the base station apparatus of the present invention is a base station apparatus in a mobile communication system in which a mobile station apparatus transmits reception quality information indicating the quality of a signal received from the base station apparatus to the base station apparatus. A means for transmitting to the mobile station apparatus including resource allocation information for specifying a time or frequency component for the uplink data channel in a signal permitting data transmission to the uplink, and predetermined from the resource allocation information by the mobile station apparatus. The reception quality information of the resource amount calculated so as not to fall below the value of is received from the mobile station device, and the reception quality information is extracted from the uplink data channel. It is characterized by providing means for doing so.</p><p> (9) Further, in the base station apparatus of the present invention, the predetermined value is set by RRC signaling.</p><p> (10) Further, the communication method of the present invention is a communication method of the mobile station device in the mobile communication system in which the mobile station device transmits reception quality information indicating the quality of the signal received from the base station device to the base station device. Then, resource allocation information for specifying the time or frequency component for the uplink data channel included in the signal permitting data transmission to the uplink is received from the base station apparatus, and the resource allocation information is used to obtain the uplink data channel. The resource amount of the reception quality information arranged together with the uplink data is calculated so as not to exceed a predetermined value, and the reception quality information is used together with the uplink data with the calculated resource amount using the uplink data channel. Then, the data is transmitted to the base station apparatus.</p><p> (11) Further, the communication method of the present invention is a communication method of the mobile station device in the mobile communication system in which the mobile station device transmits reception quality information indicating the quality of the signal received from the base station device to the base station device. Then, resource allocation information for specifying the time or frequency component for the uplink data channel included in the signal permitting data transmission to the uplink is received from the base station apparatus, and the resource allocation information is used to obtain the uplink data channel. The resource amount of the reception quality information arranged together with the uplink data is calculated so as not to fall below a predetermined value, and the reception quality information is used together with the uplink data with the calculated resource amount using the uplink data channel. Then, the data is transmitted to the base station apparatus.</p><p> (12) Further, in the communication method of the present invention, the predetermined value is set by RRC signaling transmitted from the base station apparatus.</p><p> (13) Further, the communication method of the present invention is a communication method of a base station device in a mobile communication system in which a mobile station device transmits reception quality information indicating the quality of a signal received from the base station device to the base station device. The signal that permits data transmission to the uplink includes resource allocation information that specifies the time or frequency component for the uplink data channel and is transmitted to the mobile station apparatus, and the mobile station apparatus determines from the resource allocation information. Receive the uplink data channel in which the reception quality information of the resource amount calculated so as not to exceed the value of is arranged together with the uplink data from the mobile station apparatus, and extract the reception quality information from the uplink data channel. It is characterized by doing.</p><p> (14) Further, the communication method of the present invention is a communication method of a base station device in a mobile communication system in which a mobile station device transmits reception quality information indicating the quality of a signal received from the base station device to the base station device. The signal that permits data transmission to the uplink includes resource allocation information that specifies the time or frequency component for the uplink data channel and is transmitted to the mobile station apparatus, and the mobile station apparatus determines from the resource allocation information. The reception quality information of the resource amount calculated so as not to fall below the value of is received from the mobile station device, and the reception quality information is extracted from the uplink data channel. It is characterized by doing.</p><p> (15) Further, in the communication method of the present invention, the predetermined value is set by RRC signaling.</p>
<p> According to the present invention, the base station apparatus transmits control information to the mobile station apparatus that specifies a transmission format when the mobile station apparatus transmits both uplink data and reception quality information, and the mobile station apparatus controls. When information is received from the base station device, both uplink data and reception quality information are transmitted to the base station device based on the specified transmission format. Transmission can be omitted, and downlink resources can be effectively used. In addition, since the transmission format is specified based on how the uplink resources are allocated, the arrangement of the uplink data and the reception quality information can be changed, and the control signal for changing the arrangement of each information can be transmitted. Can be omitted. As a result, it is possible to reduce the delay that occurs when changing the arrangement of each piece of information.</p>
<figref num="1">It is a block diagram which shows the schematic structure of the base station apparatus which concerns on 1st Embodiment of this invention.</figref><figref num="2">It is a block diagram which shows the schematic structure of the mobile station apparatus which concerns on 1st Embodiment of this invention.</figref><figref num="3">It is a figure which shows the arrangement example of the information in the 1st Embodiment of this invention.</figref><figref num="4">It is a figure which shows the arrangement example of the information in the 1st Embodiment of this invention.</figref><figref num="5">It is a figure which shows the arrangement example of the information in the 1st Embodiment of this invention.</figref><figref num="6">It is a figure which shows the arrangement example of the information in the 1st Embodiment of this invention.</figref><figref num="7">It is a figure which shows the arrangement example of the information in the 1st Embodiment of this invention.</figref><figref num="8">It is a figure which shows the arrangement example of the information in the 1st Embodiment of this invention.</figref><figref num="9">It is a sequence chart which shows the operation of the base station apparatus and the mobile station apparatus in the 1st Embodiment of this invention.</figref><figref num="10">It is a figure which shows the contents of the table defined in advance in the mobile communication system which concerns on 2nd Embodiment of this invention.</figref><figref num="11">It is a sequence chart which shows the operation of the base station apparatus and the mobile station apparatus in the 2nd Embodiment of this invention.</figref><figref num="12">It is a figure explaining the 3rd Embodiment of this invention.</figref><figref num="13">It is a figure which shows the contents of the table defined in advance in the 3rd Embodiment of this invention.</figref><figref num="14">It is a figure for demonstrating the communication method between a conventional base station apparatus and a mobile station apparatus.</figref>
Next, an embodiment of the present invention will be described with reference to the drawings. (First Embodiment) First, the mobile communication system according to the first embodiment of the present invention will be described. This mobile communication system is composed of a base station device and a mobile station device. FIG. 1 is a block diagram showing a schematic configuration of a base station apparatus according to the first embodiment of the present invention. The base station apparatus 100 includes a data control unit 101, a modulation coding unit 102, a mapping unit 103, an inverse fast Fourier transform (IFFT) unit 104, a radio transmission unit 105, a radio reception unit 106, and a fast Fourier transform (FFT) unit 107. It includes a demodulation / decoding unit 108, a data extraction unit 109, a scheduler unit 110, a transmission information control unit 111, and an antenna 112. The transmission information control unit 111 includes a modulation code control unit 111a and a frequency selection scheduler unit 111b.
In the base station apparatus 100, the data control unit 101 is input with transmission data and control data to be transmitted to each mobile station apparatus, and each data is sequentially transmitted to the mobile station apparatus according to an instruction from the scheduler unit 110. Will be done. The modulation coding unit 102 performs modulation processing and error correction coding processing on the signal input from the data control unit 101 based on the modulation method and coding rate determined by the modulation code control unit 111a, and each of them is subjected to modulation processing and error correction coding processing. The data is output to the mapping unit 103. The mapping unit 103 maps the data input from the modulation coding unit 102 on each subcarrier based on the frequency selection scheduling information input from the frequency selection scheduler unit 111b, and outputs the data to the inverse fast Fourier transform unit 104. To do.
The inverse fast Fourier transform unit 104 performs an inverse fast Fourier transform process on the data input from the mapping unit 103, converts it into a time-series baseband digital signal, and outputs it to the wireless transmission unit 105. The output signal from the inverse fast Fourier transform unit 104 is digitally / analog-converted by the wireless transmission unit 105, up-converted to a frequency suitable for transmission, and then transmitted to each mobile station device via the antenna 112.
The scheduler unit 110 performs downlink scheduling and uplink scheduling based on control information such as a resource area that can be used by each mobile station device, an intermittent transmission / reception cycle, a transmission data channel format, and a buffer status. The modulation code control unit 111a determines the modulation method and coding rate to be applied to each data based on the reception quality information transmitted from the mobile station apparatus, and outputs the modulation code control unit 111a to the modulation coding unit 102. The frequency selection scheduler unit 111b performs frequency selection scheduling processing applied to each data based on the reception quality information transmitted from the mobile station device, and outputs the result to the mapping unit 103.
FIG. 2 is a block diagram showing a schematic configuration of a mobile station apparatus according to the first embodiment of the present invention. The mobile station device 200 includes a data control unit 201, a modulation coding unit 202, a mapping unit 203, an inverse fast Fourier transform (IFFT) unit 204, a radio transmission unit 205, a radio reception unit 206, and a fast Fourier transform (FFT) unit 207. It includes a demodulation / decoding unit 208, a data extraction unit 209, a reception quality information control unit 210, and an antenna 211. The reception quality information control unit 210 includes a reception quality information generation unit 210a and a reception quality measurement unit 210b. The wireless reception unit 206, the FFT unit 207, the demodulation / decoding unit 208, the data extraction unit 209, and the reception quality information control unit 210 constitute a reception unit, and the data control unit 201, the modulation coding unit 202, and the mapping The unit 203, the inverse fast Fourier transform (IFFT) unit 204, and the radio transmission unit 205 constitute a transmission unit.
In the mobile station apparatus 200, the data control unit 201 is input with transmission data and control data to be transmitted to the base station apparatus, and each data is sequentially transmitted to the base station apparatus. The modulation coding unit 202 performs modulation processing and error correction coding processing on the signal input from the data control unit 201, and outputs each data to the mapping unit 203. The mapping unit 203 maps the data input from the modulation coding unit 202 on each subcarrier and outputs the data to the inverse fast Fourier transform unit 204.
The inverse fast Fourier transform unit 204 performs an inverse fast Fourier transform process on the symbol sequence input from the mapping unit 203, converts it into a time series baseband digital signal, and outputs it to the radio transmission unit 205. The output signal from the inverse fast Fourier transform unit 204 is digitally / analog-converted by the radio transmission unit 205, up-converted to a frequency suitable for transmission, and then transmitted to the base station apparatus via the antenna 211.
In the reception quality information control unit 210, the reception quality measurement unit 210b measures the reception quality of the signal received from the base station apparatus. The reception quality information generation unit 210a generates reception quality information to be transmitted to the base station apparatus based on the information measured by the reception quality measurement unit 210b.
The receiving unit consisting of the wireless receiving unit 206, the FFT unit 207, the demodulation / decoding unit 208, the data extraction unit 209, and the reception quality information control unit 210 receives information transmitted from the base station device using the uplink. Receives control information that specifies the transmission format, and recognizes the transmission format that transmits uplink data and reception quality information, and uplink data and ACK / NACK based on the specified transmission format.
The transmission unit consisting of the data control unit 201, the modulation coding unit 202, the mapping unit 203, the inverse fast Fourier transform (IFFT) unit 204, and the wireless transmission unit 205 is an uplink recognized by the reception unit. Data and reception quality information, and uplink data and ACK / NACK are transmitted to the base station device at the same time.
FIG. 3 is a diagram showing an example of arrangement of uplink data and reception quality information transmitted from the mobile station apparatus to the base station apparatus in the first embodiment of the present invention. FIG. 3 shows Form 1 and Form 2. In each form, the vertical direction represents the time axis, which is represented here by the 14OFDM symbol as an example of the resources allocated by the base station equipment. Within the 14 OFDM symbol, there are known reference symbols (pilot signal, hereinafter RS) used for propagating path estimation for data demodulation, and different numbers of reception quality information and uplink data in Form 1 and Form 2. Have been placed.
The horizontal direction represents the frequency axis. Assuming that the PUSCH resource unit (PUSCH time-minimum unit of frequency block) is one resource block, the base station apparatus allocates a resource having the size of one resource block in the frequency axis direction in the first mode. Further, in the second form, it is shown that a resource having a size of two resource blocks is allocated in the frequency axis direction.
The mobile station device allocates resources indicated by a downlink control channel (Physical Downlink Control Channel: hereinafter referred to as PDCCH) from the base station device. Use PUSCH to send data accordingly. That is, this downlink control channel (PDCCH) is a signal (L1 / L2 grant) that permits data transmission to the uplink.
In the present embodiment, the mobile station apparatus arranges information when transmitting uplink data and reception quality information at the same time according to the resources allocated by the base station apparatus using the L1 / L2 grant.
That is, in the first embodiment in FIG. 3, the mobile station apparatus is assigned a resource having a size of 14 OFDM symbols in the time axis direction and one resource block in the frequency axis direction by the L1 / L2 grant from the base station apparatus. , Indicates that the uplink data and reception quality information corresponding to the allocated resource are arranged. Here, an element composed of 1OFDM symbol and 1 subcarrier is called a resource element. In this example, assuming that one resource block is composed of 12 subcarriers, one OFDM symbol, the number of resource elements per resource block is 12, and the number of resource elements in one resource block is 168.
Similarly, in the second embodiment in FIG. 3, the mobile station apparatus is assigned a resource having a size of 14 OFDM symbols in the time axis direction and two resource blocks in the frequency direction by the L1 / L2 grant from the base station apparatus. , Indicates that the uplink data and reception quality information corresponding to the allocated resource are arranged.
Here, what kind of resources the base station equipment allocates using the L1 / L2 grant and how the mobile station equipment arranges the uplink data and the reception quality information correspondingly are determined in advance. You can decide. That is, in the present embodiment, when a resource having a size of 14 OFDM symbols in the time axis direction and one resource block in the frequency axis direction is assigned in the base station apparatus, it is shown in the mobile station apparatus in the first embodiment. It is decided in advance that the uplink data and the reception quality information are arranged. Similarly, when a resource having a size of 14 OFDM symbols in the time axis direction and two resource blocks in the frequency axis direction is assigned in the base station device, the uplink data and reception shown in Form 2 are received in the mobile station device. It is decided in advance that quality information will be arranged.
When the base station device allocates resources to the mobile station device using the L1 / L2 grant, the uplink data and the reception quality information are simultaneously distributed in what kind of information arrangement (for example, form 1 and form 2). Since the uplink data and the reception quality information can be separated because it is known in advance whether it will be transmitted, the downlink data is adaptively modulated and encoded based on the retrieved reception quality information, and / or. , Frequency selection scheduling can be applied.
Next, the first and second forms shown as an example of the arrangement of the uplink data and the reception quality information simultaneously transmitted from the mobile station device to the base station device will be described. In Form 1, a large amount of reception quality information is arranged in the time axis direction (here, the 14 OFDM symbol). This is a form in which the reception quality information transmitted from the mobile station device to the base station device is arranged so as to be stronger against the temporal fluctuation of the propagation path. On the other hand, in the second form, a large amount of reception quality information is arranged in the frequency axis direction. This is a form in which the reception quality information transmitted from the mobile station device to the base station device is arranged so as to be stronger against the frequency fluctuation of the propagation path.
Similarly, FIG. 4 shows an example of arrangement of uplink data and reception quality information transmitted from the mobile station apparatus for explaining the first embodiment of the present invention. On the left side, the same morphology as morphology 1 in FIG. 3 is shown. In the third embodiment shown in FIG. 4, the reception quality information is simply arranged on the low frequency side (or the high frequency side) with respect to the resources allocated by the base station apparatus. With such a simple arrangement, the base station apparatus can separate the uplink data and the reception quality information without requiring complicated processing.
Similarly, FIG. 5 shows an example of arrangement of uplink data and reception quality information transmitted from the mobile station apparatus for explaining the first embodiment of the present invention. On the left side, Form 4 which is the same form as Form 1 in FIG. 3 is shown. The major difference between Form 4 and Form 1 is that the reception quality information is arranged in a form dispersed in the frequency axis direction, and the uplink data is arranged in the portion where the reception quality information is thinned out. Each reception quality information area is composed of one resource element group or a plurality of resource element groups. Further, as shown in Form 5 in FIG. 5, by arranging the reception quality information in a distributed manner in the frequency axis direction, the resource used for transmitting the reception quality information has the same resource size as in Form 4. (In Form 4, four resource element groups are used for one OFDM symbol, and in Form 5, two resource element groups are used for one OFDM symbol as reception quality information, but two resource blocks are used in the frequency direction. (Similarly) can also be used while arranging to be more resistant to frequency fluctuations in the propagation path.
Further, FIGS. 6, 7, and 8 show an example of arrangement of uplink data and reception quality information transmitted from the mobile station apparatus for explaining the first embodiment of the present invention. The major difference between FIGS. 6, 7, and 8 from FIGS. 3, 4, and 5, is that the arrangement of reception quality information and uplink data is shown using gradation in each form. The morphology shown on the left side of FIGS. 6, 7, and 8 is shown in morphology 1'as a morphology corresponding to morphology 1 shown in FIG.
In FIGS. 6, 7, and 8, the arrangement of the uplink data and the reception quality information is shown by using the gradation. In these figures, the uplink data and the reception quality are shown even within one resource element. It conceptually represents that information is mixed and arranged. That is, the uplink data and the reception quality information are mixed before being placed on the resource element. Here, the black part indicated by the gradation indicates the reception quality information, and the white part indicates the uplink data. For example, uplink data and receive quality information are mixed before being placed on the resource element, and these are placed in the 12 resource element group. That is, conceptually, one resource element contains a part of received quality information and a part of uplink data.
Form 1'in FIG. 6 shows the arrangement of uplink data and reception quality information when one resource block is specified in the L1 / L2 grant. In this form 1', 4OFDM symbols out of 14OFDM symbols are arranged in a mixture of uplink data and reception quality information. On the other hand, Form 6 in FIG. 6 shows the arrangement of uplink data and reception quality information when two resource blocks are specified in the L1 / L2 grant. In this form 6, 4OFDM symbols out of 14OFDM symbols are arranged as resources to be transmitted by mixing uplink data and reception quality information, and further arranged using two resource blocks in the frequency direction. .. Form 6 shown in FIG. 6 is a form arranged so that the amount of received quality information increases as the number of allocated resource blocks increases. In addition, the black portion indicating the reception quality information in the gradations of Form 1'and Form 6 in FIG. 6 is represented by the same darkness. This indicates that the proportions of the uplink data and the reception quality information mixed in Form 1'and Form 6 are the same.
Form 1'in FIG. 7 shows the same form as form 1'shown in FIG. Further, the seventh embodiment shows the arrangement of the uplink data and the reception quality information when two resource blocks are specified in the L1 / L2 grant, as in the sixth embodiment in FIG. In this form 7, 2 OFDM symbols out of 14 OFDM symbols are arranged as resources to be transmitted by mixing uplink data and reception quality information, and further arranged using two resource blocks in the frequency direction. .. That is, Form 7 is a form arranged so that the amount of received quality information does not increase as the number of allocated resource blocks increases. The black part indicating the reception quality information in the gradations of Form 1'and Form 7 in FIG. 7 is represented by the same darkness, which indicates that the ratio of the mixed uplink data and the reception quality information is the same. ing.
Form 1'in FIG. 8 shows the same form as form 1'shown in FIG. The major difference between Form 1'and Form 8 shown in FIG. 8 is that the black part indicating the reception quality information in the gradation is represented by different darkness. For example, the black part of Form 8 is shown lightly. This indicates that the ratio of uplink data and reception quality information mixed in Form 1'and Form 8 is different, and the ratio of uplink data and reception quality information mixed before being placed on the source element. Indicates that is different. In FIG. 8, it is shown that the amount of information of the overall reception quality information transmitted in Form 1'and Form 8 is the same.
A specific example will be described. In Form 1'of FIG. 8, assuming that reception quality information having a size of "4" and uplink data having a size of "6" are mixed with resources for one symbol and one resource block, Form 8 In, reception quality information having a size of "2" and uplink data having a size of "8" are mixed in a resource for one symbol and one resource block. That is, the size of the reception quality information contained in the resource for one symbol and one resource block becomes small. However, as compared with the form 1', the number of resource blocks transmitted in the form 8 in which the uplink data and the reception quality information are mixed is doubled. That is, the reception quality information transmitted in the entire form 1'and the reception quality information transmitted in the entire form 7 have the same amount of information.
In the base station device, uplink data and reception quality information as shown in FIGS. 6, 7 and 8 are mixed before being arranged on the resource element, and are distributed and arranged in a plurality of resource elements. When the information is received, it may be configured so that it can be retrieved as one piece of information (reception quality information, uplink data) after receiving all the distributed resource elements .
As described above, the mobile station device can be made by mixing the uplink data and the reception quality information before they are arranged on the resource element and arranging them as conceptually shown in FIGS. 6, 7, and 8. It is not necessary to consider the position of the resource element containing the uplink data or the reception quality information, and the processing when arranging the information in the resource element can be efficiently performed. Such mixing of uplink data and reception quality information can be performed, for example, by embedding the reception quality information in the portion where the uplink data is thinned out for each modulation symbol, and performing processing such as discrete Fourier transform on the information. it can.
The mobile station device has the uplink data and reception quality information as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, and Fig. 8 according to the resources allocated by the L1 / L2 grant of the base station equipment. Arrangement can be done. More specifically with reference to FIGS. 6, 7, and 8, the mobile station device changes the ratio of the uplink data and the received quality information to be mixed according to the resources allocated by the L1 / L2 grant of the base station device. be able to. To explain in an easy-to-understand manner with reference to FIG. 8, the mobile station equipment can change the darkness of the black part indicating the reception quality information according to the resources allocated by the L1 / L2 grant of the base station equipment. ,That's what it means. Here, the arrangement of the information described above is an example, and for example, the arrangements shown in FIGS. 3, 4, 5, 5, 6, 7, and 8 may be combined, and the mobile station may be combined. Any arrangement may be used as long as the uplink data and the reception quality information transmitted from the device at the same time are arranged.
The arrangement of the reception quality information shown above in the resource element group can be roughly divided into two. One is to increase the resource amount of the received quality information in proportion to the resource allocation of the uplink data. For example, when four resource element groups are arranged as reception quality information in one resource block as in form 1, form 1', and form 6, when two resource blocks are assigned, the reception quality information is eight resource element groups. Will be sent by. The other is a method of changing the arrangement so that the resource amount (number of resource element groups) of the received quality information is always constant according to the resource allocation of the uplink data. For example, the arrangement shown in any of Form 2, Form 3, Form 5, Form 7, and Form 8 is used. In this embodiment, the modulation method and the coding rate applied to the reception quality information are set to be constant.
Here, the above two arrangement methods are defined as an information increase type and an information maintenance type, respectively, and the control method for each arrangement method is described. First, a control method relating to an information-increasing arrangement method in a base station apparatus will be described. The base station apparatus transmits the RRC signaling transmitted to the mobile station apparatus including information indicating the minimum value and / or the maximum value of the resource to which the reception quality information can be allocated when performing the information augmentation type arrangement. can do.
Here, the minimum value of the resource in which the reception quality information can be arranged is, for example, the resource amount of the reception quality information that can be arranged in one resource block (for example, the number of modulation symbols, the number of resource elements, the amount of information, etc.). ) Is set. That is, it shows the maximum value of the resource amount of the reception quality information that can be arranged in one resource block. Further, the maximum value of the resource in which the reception quality information can be arranged is the maximum resource amount of the reception quality information that can be arranged in the resource block allocated by the base station apparatus (for example, the number of modulation symbols, the resource element). Number, amount of information, etc.) is set.
Until the mobile station device reaches the minimum value of resources that can place the reception quality information set by RRC signaling from the base station device (the maximum value of the reception quality information that can be placed in one resource block). , Uplink data and reception quality information are arranged in an information-increasing type (form 1, form 1', form 6) according to the number of resource blocks allocated by the L1 / L2 grant and / or the transport block size.
Further, in the mobile station device, the resource calculated based on the L1 / L2 grant when arranging the reception quality information is the maximum resource that can allocate the reception quality information set by the RRC signaling from the base station device. If the value is exceeded, the amount of resources in the time direction in which the received quality information is placed is reduced as shown in Form 7, or the thinning rate of the uplink data is reduced as shown in Form 8. By reducing the ratio of the amount of resources for arranging the reception quality information, the uplink data and the reception quality information are arranged so as not to exceed the maximum value of the resources set by the base station apparatus.
Further, in the mobile station device, the resource calculated based on the L1 / L2 grant when arranging the reception quality information is the minimum resource that can allocate the reception quality information set by the RRC signaling from the base station device. If it is below the value, as shown in Form 7, the amount of resources in the time direction in which the received quality information is placed is increased, or as shown in Form 8, the thinning rate of the uplink data is increased. By increasing the ratio of the amount of resources for arranging the reception quality information, the uplink data and the reception quality information are arranged so as not to fall below the minimum value of the resources set by the base station apparatus.
In this way, the mobile station device that receives the RRC signaling including the information indicating the minimum value and / or the maximum value of the resource to which the reception quality information can be arranged is transmitted from the base station device, and receives the signal. When the resource for transmitting the reception quality information calculated based on the L1 / L2 grant is large (that is, the uplink data with a large amount of information is transmitted) by switching the arrangement of the link data and the reception quality information and transmitting at the same time. However, it is possible to avoid transmitting a certain amount of reception quality information (reception quality information with an excessive amount of information) by the mobile station device, and the uplink overhead due to the transmission of reception quality information is increased. It is possible to avoid a significant increase. In addition, even when the resource for transmitting the reception quality information calculated based on the L1 / L2 grant is small (that is, when transmitting uplink data with a small amount of information), the reception quality of the mobile station device is above a certain level. Information (reception quality information set by the minimum value) can be transmitted, and the quality of reception quality information can be maintained above a certain level. Further, if the minimum value is set to the minimum value that can be calculated based on the L1 / L2 grant, it is possible to prevent the mobile station apparatus from transmitting reception quality information that falls below this minimum value. Here, if the resource for transmitting the reception quality information calculated based on the L1 / L2 grant is specified in the calculation formula so that it does not exceed the maximum value or fall below the minimum value, the maximum value is used using RRC signaling. , There is no need to set the minimum value.
Subsequently, a control method relating to an information maintenance type arrangement method in the base station apparatus will be described. The base station device is information indicating a certain amount of resources to which reception quality information can be placed when the mobile station device performs information maintenance type placement in RRC signaling transmitted to the mobile station device (hereinafter, maintenance value). ) Can be included in the transmission. Here, the maintenance value at which the reception quality information can be arranged is a certain amount of reception quality information resources that can be arranged in the resource block allocated by the base station apparatus (for example, the number of modulation symbols and the number of resource elements). , Information amount, etc.). The mobile station device is an L1 / L2 grant and what size resource block number and / or transport block if a maintenance value of size "10" is set in the RRC signaling from the base station device. Even if the size is assigned, the uplink data and the reception quality information of the size of "10" are arranged.
In addition, when the resource calculated when arranging the reception quality information in the mobile station device exceeds the maintenance value of the resource in which the reception quality information set by the RRC signaling from the base station device can be arranged. , A resource for arranging reception quality information by reducing the amount of resources in the time direction for arranging reception quality information as shown in Form 7, or by reducing the thinning rate of uplink data as shown in Form 8. The uplink data and the reception quality information are arranged by reducing the ratio of the amount so as not to exceed the maintenance value of the resource set by the base station device.
Further, when the resource calculated when arranging the reception quality information in the mobile station device is less than the maintenance value of the resource in which the reception quality information set by the RRC signaling from the base station device can be arranged. , A resource for arranging reception quality information by increasing the amount of resources in the time direction for arranging reception quality information as shown in Form 7, or by increasing the thinning rate of uplink data as shown in Form 8. The uplink data and the reception quality information are arranged by increasing the ratio of the amount so as not to fall below the maintenance value of the resource set by the base station device.
In this way, the mobile station device that receives the signal by transmitting the RRC signaling including the information indicating the information (maintenance value) indicating a certain amount of resources in which the reception quality information can be arranged is transmitted from the base station device. By transmitting uplink data and constant reception quality information at the same time, it is possible to always transmit a constant amount of reception quality information without depending on the resources allocated by the L1 / L2 grant.
FIG. 9 is a sequence chart showing the operation of the base station device and the mobile station device in the first embodiment of the present invention. First, the base station apparatus uses the L1 / L2 grant to allocate resources when the mobile station apparatus transmits uplink data (step S61). Here, it is assumed that the resources corresponding to the first form in FIG. 3 are allocated. Next, the mobile station device that receives the L1 / L2 grant from the base station device simultaneously transmits the uplink data and the reception quality information by arranging the information corresponding to the allocated resource (here, form 1) (form 1). Step S62).
Next, the base station apparatus uses the L1 / L2 grant to reallocate resources when the mobile station apparatus transmits uplink data (step S63). Here, it is assumed that the resources corresponding to the second form in Fig. 3 are allocated. Next, the mobile station device that receives the L1 / L2 grant from the base station device simultaneously transmits the uplink data and the reception quality information by arranging the information corresponding to the allocated resource (here, form 2) (form 2). Step S64). Here, the arrangement of uplink data and reception quality information is determined in advance according to the resources allocated by the base station apparatus using the L1 / L2 grant.
As shown above, the arrangement of the uplink data and the reception quality information according to the resource allocation of the uplink data from the base station apparatus is determined in advance, and the mobile station apparatus performs the uplink from the base station apparatus. By arranging the uplink data and the reception quality information according to the allocation of the data resource, it is not necessary to transmit the control signal for designating the arrangement of each information. This can reduce the waste of downlink resources. In addition, since the information arrangement when transmitting the uplink data and the reception quality information at the same time is changed according to the method of allocating the uplink resources, it is not necessary to transmit the control signal for changing the information arrangement. , It is possible to reduce the delay that occurs when changing the arrangement of each information.
In the first embodiment, the base station apparatus allocates resources for uplink data. However, since the reception quality information transmitted at the same time as the uplink data is arranged according to this resource allocation, the base station apparatus eventually allocates the resources to the uplink data and the reception quality information. become.
The first embodiment of the present invention as described above can also be applied when the uplink data and the ACK / NACK are transmitted at the same time. That is, the arrangement of the uplink data and the ACK / NACK according to the resource allocation of the uplink data from the base station apparatus is determined in advance, and the mobile station apparatus allocates the uplink data resource from the base station apparatus. By arranging the uplink data and ACK / NACK according to the above, there is no control signal for specifying the arrangement of each information (uplink data, ACK / NACK), and the waste of downlink resources is reduced. be able to. In addition, since the arrangement of information when transmitting uplink data and ACK / NACK at the same time is changed according to how the uplink resources are allocated, there is no need to transmit a control signal for changing the information arrangement. , It is possible to reduce the delay that occurs when changing the arrangement of each information.
(Second embodiment) In the second embodiment, the mobile station apparatus performs modulation on the reception quality information transmitted simultaneously according to the modulation method and the code rate applied to the uplink data assigned by the base station apparatus using the L1 / L2 grant. Determine the method and code rate.
The base station device allocates resources to the uplink data using the L1 / L2 grant, and specifies the modulation method and the coding rate to be applied to the uplink data. The mobile station apparatus that has received this signal determines the modulation method and code rate to be applied to the reception quality information according to the modulation method and code rate to be applied to the uplink data. Here, what kind of modulation method and coding rate the base station equipment applies to the uplink data using the L1 / L2 grant, and what kind of modulation method and coding rate the mobile station equipment corresponds to. Can be decided in advance as to whether or not to apply to the reception quality information.
FIG. 10 is a diagram showing the contents of a table defined in advance in the mobile communication system according to the second embodiment. As shown in FIG. 10, the modulation method and code rate applied to the uplink data by the base station apparatus are associated with the modulation method and code rate to be applied to the reception quality information. As shown in FIG. 10, when the base station device specifies that the uplink data is subjected to the modulation method QPSK and the coding rate 1/8, the mobile station device uses the modulation method QPSK or the modulation method QPSK for the reception quality information. , BPSK, coding rate 1/8, or 1/16 is applied and transmitted. Further, for example, when the base station device specifies that the uplink data is subjected to the modulation method 16QAM and the coding rate 1/4, the mobile station device uses the modulation method 16QAM or QPSK for the reception quality information. It is predetermined that the coding rate is 1/4 or 1/8 and the transmission is performed.
That is, for example, by specifying that the base station device applies the modulation method 16QAM and the coding rate 1/4 to the uplink data, the mobile station device applies the modulation method 16QAM and the coding rate 1/4. The uplink data and the reception quality information with the modulation method 16QAM or QPSK, the coding rate 1/4, or 1/8 will be transmitted at the same time. Here, the coding rate applied to the uplink data and the coding rate applied to the reception quality information can be calculated from the modulation method and the size of the transport block that can be transmitted. That is, the modulation method and the transport block that can be transmitted may be defined in advance.
The correspondence between the modulation method and coding rate of the uplink data and the modulation method and coding rate of the reception quality information is mapped one-to-one or one-to-many in advance. In the case of one-to-many mapping, when demodulating the reception quality information on the base station device side, Blind, which will be described later, uses a plurality of modulation methods and code rates associated with the uplink data modulation method and code rate. Decode will be done.
In general, when a high modulation method and code rate are used for the information to be transmitted, a larger amount of information can be transmitted, and when a low modulation method and code rate are used, reliability can be transmitted. It is possible to transmit information with. As shown above, by predetermining the modulation method and code rate applied to the reception quality information in response to the modulation method and code rate applied to the uplink data by the base station device, the uplink data and the uplink data can be obtained. The modulation method and coding rate of the reception quality information transmitted at the same time can be made to follow the modulation method and coding rate of the uplink data, and the transmission success probability of the reception quality information can be improved.
When the base station device specifies the modulation method and code rate to be applied to the uplink data using the L1 / L2 grant for the mobile station device, which reception quality information is transmitted at the same time as the uplink data. Since it is known in advance whether the data is transmitted with such a modulation method and code rate, each information can be decoded based on the modulation method and code rate of the received quality information. Here, when the correspondence between the modulation method and coding rate of uplink data and the modulation method and coding rate of reception quality information is mapped one-to-many, all possible modulation methods and coding rates are used. It tries to decode the data and confirms that it can be demodulated accurately by using CRC (Cyclic Redundancy Check) etc. (called Blind Decode). The base station apparatus performs adaptive modulation coding and / or frequency selection scheduling on the downlink data based on the accurately demodulated reception quality information.
FIG. 11 is a sequence chart showing the operation of the base station apparatus and the mobile station apparatus in the second embodiment of the present invention. First, the base station apparatus uses the L1 / L2 grant to specify the modulation method and the coding rate to be applied to the uplink data (step S71). Here, it is assumed that the modulation method A and the code rate B are specified as the modulation method and the code rate applied to the uplink data. Next, the mobile station apparatus that has received the L1 / L2 grant from the base station apparatus applies the modulation method and the coding rate corresponding to the modulation method A and the coding rate B applied to the uplink data to the reception quality information. Here, the modulation method A applied to the uplink data, the modulation method C corresponding to the coding rate B, and the coding rate D are applied to the reception quality information. Then, the mobile station device simultaneously transmits the uplink data to which the modulation method A and the coding rate B are applied and the reception quality information to which the modulation method C and the coding rate D are applied to the base station device (step S72).
Next, the base station apparatus uses the L1 / L2 grant to specify the modulation method and the coding rate to be applied to the uplink data again (step S73). Here, it is assumed that the modulation method E and the code rate F are specified as the modulation method and the code rate applied to the uplink data. Next, the mobile station device that has received the L1 / L2 grant from the base station device applies the modulation method and the code rate corresponding to the modulation method E and the code rate F applied to the uplink data to the reception quality information. Here, it is assumed that the modulation method E and the coding rate H corresponding to the modulation method E and the coding rate F applied to the uplink data are applied to the reception quality information. Then, the mobile station apparatus simultaneously transmits the uplink data to which the modulation method E and the coding rate F are applied and the reception quality information to which the modulation scheme G and the coding rate H are applied to the base station apparatus (step S74). .. Here, the modulation method and code rate of the received quality information corresponding to the modulation method and code rate applied to the uplink data by the base station apparatus using the L1 / L2 grant are determined in advance.
As shown above, the modulation method and code rate of the received quality information to be transmitted at the same time as the uplink data are determined in advance according to the specification of the modulation method and code rate applied to the uplink data from the base station device. The mobile station device applies the modulation method and the coding rate to the reception quality information according to the designation of the modulation method and the coding rate applied to the uplink data from the base station device. As a result, the reception quality information transmitted by the mobile station device to the base station device can follow the modulation method and coding rate of the uplink data, and the transmission success probability of the reception quality information can be improved. ..
In the second embodiment, the base station apparatus specifies the modulation method and the coding rate to be applied to the uplink data. However, since the modulation method and the coding rate of the reception quality information transmitted at the same time as the uplink data are specified according to this designation, the base station apparatus results in a modulation method for the uplink data and the reception quality information. And the coding rate is specified.
The second embodiment of the present invention as described above can also be applied when the uplink data and the ACK / NACK are transmitted at the same time. That is, according to the specification of the modulation method and the code rate applied to the uplink data from the base station device, the ACK / NACK modulation method and the code rate to be transmitted at the same time as the uplink data are determined in advance and moved. By applying the modulation method and code rate to ACK / NACK according to the specification of the modulation method and code rate applied to the uplink data from the base station device by the station device, the mobile station device applies the modulation method and code rate to the base station device. The ACK / NACK to be transmitted can follow the modulation method and code rate of the uplink data, and the transmission success probability of the reception quality information can be improved.
(Third embodiment) Based on the first embodiment and the second embodiment described above, specific operation examples of the base station device and the mobile station device will be described as the third embodiment. FIG. 12 shows the L1 / L2 grant transmitted from the base station apparatus to the mobile station apparatus, the reception quality information transmitted from the mobile station apparatus to the base station apparatus aperiodically, and the reception quality information periodically transmitted in the third embodiment. It is a figure which shows the transmission form when the reception quality information, the uplink data, the uplink data or the uplink data and the reception quality information are transmitted at the same time. The reception quality information transmitted from the mobile station device to the base station device aperiodically is, for example, the mobile station device in which the L1 / L2 grant containing 1-bit information is transmitted from the base station device and the signal is received. Can be realized by transmitting the reception quality information to the base station apparatus. The reception quality information periodically transmitted from the mobile station device to the base station device is, for example, RRC signaling including information for setting the cycle for transmitting the reception quality information from the base station device, and the signal is received. This can be realized by transmitting the reception quality information to the base station device at a set cycle by the mobile station device. In FIG. 12, the operations from # slot1 to # slot10 are shown as an example. The processing flow corresponding to each slot is shown on the right side. Here, in order to make the processing flow easier to see, the arrows corresponding to # slot1 indicate the processing flow from the base station equipment, and the arrows corresponding to the other slots indicate only the processing flow from the mobile station equipment. Described below.
FIG. 13 is a pre-defined table of modulation schemes and code rates used in the third embodiment. The mobile station equipment whose modulation method and coding rate for uplink data are specified by the L1 / L2 grant from the base station equipment uses the table defined in FIG. 13 to modulate and encode the reception quality information. Give a rate. For example, if the uplink data modulation method and code rate are specified as QPSK, 1/8, the mobile station device applies BPSK, 1/4 modulation method, and code rate to the received quality information.
Returning to FIG. 12, the operation of each slot will be described. In # slot1 in FIG. 12, the base station device RRC signals the minimum and / or maximum value and maintenance value of the resources to which the reception quality information can be placed when the mobile station device simultaneously transmits uplink data and reception quality information. Include in and send. Here, in order to make the explanation easy to understand, it is assumed that the minimum value of the amount of information in which the reception quality information can be arranged is set to "10", the maximum value is set to "50", and the maintenance value is set to "20". Here, as an example, the values "10", "50", and "20" are set, but the minimum and / or maximum values of the resources in which the reception quality information can be placed are set, and the reception quality information is used as the maintenance value. It can be set by using, for example, the number of modulation symbols, the number of resource elements on which reception quality information is placed, the amount of information (number of bits) of reception quality information, etc. before placement on the element. Also, in # slot1, all the minimum and / or maximum and maintenance values are set, but it is not always necessary to set all the values.
# slot2 is a slot that is set in advance as a slot for periodically transmitting reception quality information from the base station apparatus. In # slot2, the base station device allocates the resources used by the mobile station device to transmit the uplink data by using the L1 / L2 grant. Upon receiving this signal, the mobile station apparatus simultaneously transmits uplink data and reception quality information by an information-maintaining arrangement method using the allocated resources.
Furthermore, the operation of the mobile station device in # slot2 will be described. In # slot2, the mobile station device transmits uplink data and reception quality information to the base station device by an information maintenance type arrangement method. The information maintenance type placement method is a placement method in which a constant amount of reception quality information is always transmitted at the maintenance value set by RRC signaling.
A specific example will be described. Here, the maintenance value at which reception quality information can be arranged by RRC signaling from the base station apparatus is set to 20. At this time, it is assumed that the base station apparatus uses the L1 / L2 grant and sets the resource used for transmitting the uplink data as 1 resource block, the modulation method, and the coding rate as QPSK, 1/8. .. This indicates that the modulation method and coding rate of the received quality information are set to BPSK, 1/16 from the table shown in FIG. By control from this base station device, the mobile station device can use the modulation method QPSK, the uplink data with a code rate of 1/8, and the reception quality information having a size of "20", and the modulation method BPSK. It will be transmitted using one resource block with a coding rate of 1/16. Therefore, the amount of resources used for this reception quality information is 320 (20x1x16).
Further, it is assumed that the base station apparatus uses the L1 / L2 grant and sets the resources used for transmitting uplink data to 2 resource blocks, the modulation method, and the coding rate to QPSK and 1/8. This also indicates that the modulation method and coding rate of the received quality information are set to BPSK, 1/16 from the table shown in FIG. That is, under the control from this base station device, the mobile station device uses the modulation method QPSK, the uplink data with a coding rate of 1/8, and the reception quality information having a magnitude of "20". It will be transmitted using 2 resource blocks with BPSK and a code rate of 1/16. Therefore, the amount of resources used for this reception quality information is 320 (20x1x16).
Further, it is assumed that the base station apparatus uses the L1 / L2 grant and sets the resources used for transmitting uplink data to 2 resource blocks, the modulation method, and the coding rate to QPSK and 1/4. This also indicates that the modulation method and coding rate of the received quality information are set to BPSK, 1/8 from the table shown in FIG. That is, under the control from this base station device, the mobile station device uses the modulation method QPSK, the uplink data with a code rate of 1/4, and the reception quality information having a magnitude of "20". It will be transmitted using 2 resource blocks with BPSK and a code rate of 1/8. Therefore, the amount of resources used for this reception quality information is 160 (20x1x8).
# slot3 is a slot set as a slot for transmitting reception quality information from the base station device aperiodically. This is a slot set as a slot for transmitting reception quality information in a trigger manner under the control of the base station apparatus. In # slot3, the base station device allocates the resources used by the mobile station device to transmit the uplink data by using the L1 / L2 grant. Upon receiving this signal, the mobile station apparatus simultaneously transmits the uplink data and the reception quality information by the information-increasing arrangement method using the allocated resources.
Furthermore, the operation of the mobile station device in # slot3 will be described. In # slot3, the mobile station device transmits uplink data and reception quality information to the base station device by an information-increasing arrangement method. The information-increasing allocation method is the amount of resources that allocates reception quality information within the range of the minimum and / or maximum values set by RRC signaling according to the resources allocated by the L1 / L2 grant from the base station equipment. It is an arrangement method to increase and transmit.
A specific example will be described. Here, the minimum value and the maximum value of the amount of information that can be arranged by RRC signaling from the base station device is "10" and the maximum value is "250" (here, the minimum value and the maximum value are the modulation method BPSK, the coding rate). It is set to 1/16). At this time, it is assumed that the base station apparatus uses the L1 / L2 grant and sets the resource used for transmitting the uplink data as 1 resource block, the modulation method, and the coding rate as QPSK, 1/8. .. This indicates that the modulation method and coding rate of the received quality information are set to BPSK, 1/16 from the table shown in FIG. By control from this base station device, the mobile station device has the modulation method QPSK, uplink data with a code rate of 1/8, and the size of "10" (10x1x1x (1/16) / (1/16)). The modulation method BPSK and the coding rate 1/16 are applied to the received quality information, and one resource block is used for transmission. Therefore, the amount of resources used for this reception quality information is 160 (10x1x16).
Furthermore, it is assumed that the base station apparatus uses the L1 / L2 grant and sets the resources used for transmitting uplink data to 3 resource blocks, the modulation method, and the coding rate to QPSK and 1/8. This also indicates that the modulation method and coding rate of the received quality information are set to BPSK, 1/16 from the table shown in FIG. That is, under the control from this base station device, the mobile station device has the modulation method QPSK, the uplink data with the coding rate 1/8, and "30" (10x3x1x (1/16) / (1/16)). The reception quality information having the magnitude of is applied with the modulation method BPSK and the coding rate 1/16, and is transmitted using 3 resource blocks. Therefore, the amount of resources used for this reception quality information is 480 (30x1x16).
Furthermore, suppose that the base station device uses the L1 / L2 grant and sets the resources used for transmitting uplink data to 3 resource blocks, the modulation method, and the coding rate to 16QAM and 1/4. This also indicates that the modulation method and coding rate of the received quality information are set to QPSK, 1/4 from the table shown in FIG. That is, by the control from this base station device, the mobile station device has the uplink data with the modulation method 16QAM and the coding rate 1/4, and "240" (10x3x2x (1/4) / (1/16)). ) Is applied to the reception quality information with the modulation method QPSK and the coding rate 1/4, and is transmitted using 3 resource blocks. Therefore, the amount of resources used for this reception quality information is "480" (240x (1/2) x4). This is an increasing placement method for resource blocks, a modulation method, and an increasing placement method for code rates.
Alternatively, it is assumed that the base station apparatus uses the L1 / L2 grant and the resources used for transmitting uplink data are set to 3 resource blocks, the modulation method, and the coding rate are set to 16QAM and 1/4. This also indicates that the modulation method and coding rate of the received quality information are set to QPSK, 1/4 from the table shown in FIG. That is, by the control from this base station device, the mobile station device can convert the uplink data to which the modulation method is 16QAM and the coding rate 1/4, and the reception quality information having the size of "30" (10x3x1x1). , Modulation method QPSK, coding rate 1/4 is applied, and transmission is performed using 3 resource blocks. Therefore, the amount of resources used for this reception quality information is 60 (30x (1/2) x4). This is an increasing placement method for resource blocks, a modulation method, and a maintenance type placement method for code rates.
Furthermore, suppose that the base station device uses the L1 / L2 grant and sets the resources used for transmitting uplink data to 4 resource blocks, the modulation method, and the coding rate to 16QAM and 1/4. This also indicates that the modulation method and coding rate of the received quality information are set to QPSK, 1/4 from the table shown in FIG. That is, under the control from this base station device, the mobile station device has the uplink data with the modulation method 16QAM and the coding rate 1/4, and "320" (10x4x2x (1/4) / (1/16)). ) Is applied to the reception quality information with the modulation method QPSK and the coding rate 1/4, and is transmitted using 3 resource blocks. However, since the maximum value of the resource to which the reception quality information can be placed is set to "250" by the RRC signaling from the base station device, the mobile station device can receive the reception quality information having a size of "250". Send to the base station device. Therefore, the amount of resources used for this reception quality information is 500 (250x (1/2) x4).
In # slot4 of FIG. 12, the base station apparatus transmits a normal L1 / L2 grant, and the mobile station apparatus that receives the signal transmits uplink data to the base station apparatus. The same processing is performed in # slot8.
Similar to # slot2, # slot7 is a slot that is set in advance as a slot for periodically transmitting reception quality information from the base station apparatus. In # slot7, the base station device allocates the resources used by the mobile station device to transmit the uplink data by using the L1 / L2 grant. Upon receiving this signal, the mobile station apparatus simultaneously transmits uplink data and reception quality information by an information-maintaining arrangement method using the allocated resources. Regarding the information maintenance type arrangement method, the same processing as # slot2 is performed.
Similar to # slot3, # slot10 is a slot set as a slot for transmitting reception quality information from the base station apparatus aperiodically. This is a slot set as a slot for transmitting reception quality information in a trigger manner under the control of the base station apparatus. In # slot10, the base station device allocates the resources used by the mobile station device to transmit the uplink data by using the L1 / L2 grant. Upon receiving this signal, the mobile station apparatus simultaneously transmits the uplink data and the reception quality information by the information-increasing arrangement method using the allocated resources. Regarding the information increase type arrangement method, the same processing as # slot3 is performed.
The amount of information used for reception quality information regarding the information-maintaining type applied in # slot2 and #slot7 above, and the information-increasing type and information-maintaining type arrangement method applied in # slot3 and # slot10. The formula for calculating the number of modulation symbols used in the link data can be expressed as follows, for example. Here, the number of resource blocks allocated for transmitting uplink data in the L1 / L2 grant is Nrb, the symbol rate by the modulation method is Md, and the coding rate is Cd. Further, the symbol rate by the modulation method of the reception quality information set by the predefined table as shown in FIG. 13 is Mc, and the coding rate is Cc. In addition, MaxR is the maximum value and MinR is the minimum value of the amount of information that can be arranged for reception quality information set by RRC signaling from the base station equipment (when the symbol rate by the modulation method is Mo and the coding rate is Co). , Let the maintenance value be ConR. Here, the minimum value, maximum value, and maintenance value of the resource in which the reception quality information can be placed are set as the information amount of the reception quality information, but before the reception quality information is placed on the resource element, for example, modulation. It may be set by the number of symbols, the number of resource elements in which reception quality information is arranged, and the like.
First, the information-increasing arrangement method can be expressed by, for example, the following equation. The symbol rate Mc and the coding rate Cc for the modulation method of the reception quality information are expressed as functions of the symbol rate Md and the coding rate Cd for the uplink data, and this is specified as a table as shown in FIG. Predefined. (Mc, Cc) = f (Md, Cd) Therefore, the number of modulation symbols Ncs used for reception quality information from the mobile station device can be expressed by the following equation using Mc and Cc. Ncs = Bc × Mc × 1 / Cc × α Here, since the information increase type arrangement method is an arrangement method in which the amount of information of the received quality information is increased and transmitted within the range of the minimum value and / or the maximum value set by RRC signaling from the base station apparatus. Bc will be set by the following formula. Bc = MAXMIN (MaxR, MinR × Nrb × Mc × 1 / Cc × 1 / Mo × Co, MinR) That is, the number of modulation symbols Nds used for uplink data is expressed by the following equation. Nds = Nrbx168-Ncs-γ Here, α, β, and γ are coefficients, which are values that vary depending on other factors such as the number of reference symbols included in the resource block and the diffusion rate applied to the information.
Subsequently, the arrangement method in the case of the information maintenance type can be expressed by, for example, the following formula. The symbol rate Mc and the coding rate Cc according to the modulation method of the reception quality information are expressed as a function of the symbol rate Md and the coding rate Cd for the uplink data, and this is specified as a table as shown in FIG. Predefined. (Mc, Cc) = f (Md, Cd) Therefore, the number of modulation symbols Ncs used for reception quality information from the mobile station device can be expressed by the following equation using Mc and Cc. Ncs = ConR × Mc × 1 / Cc × β Here, since the information maintenance type arrangement method is an arrangement method in which a constant amount of information of reception quality information is always transmitted by the maintenance value set by RRC signaling from the base station apparatus, Bc is expressed by the following formula. It will be set. Bc = ConR That is, the number of modulation symbols Nds used for uplink data is expressed by the following equation. Nds = Nrbx168-Ncs-γ Here, α, β, and γ are coefficients, which are values that vary depending on other factors such as the number of reference symbols included in the resource block and the diffusion rate applied to the information.
In this way, the mobile station device that receives the RRC signaling including the information indicating the minimum value and / or the maximum value of the resource to which the reception quality information can be arranged is transmitted from the base station device, and receives the signal. When the resource for transmitting the reception quality information calculated based on the L1 / L2 grant is large (that is, the uplink data with a large amount of information is transmitted) by switching the arrangement of the link data and the reception quality information and transmitting at the same time. However, it is possible to avoid transmitting a certain amount of reception quality information (reception quality information with an excessive amount of information) by the mobile station device, and the uplink overhead due to the transmission of reception quality information is increased. It is possible to avoid a significant increase. In addition, even when the resource for transmitting the reception quality information calculated based on the L1 / L2 grant is small (that is, when transmitting uplink data with a small amount of information), the reception quality of the mobile station device is above a certain level. Information (reception quality information set by the minimum value) can be transmitted, and the quality of reception quality information can be maintained above a certain level. Further, if the minimum value is set to the minimum value that can be calculated based on the L1 / L2 grant, it is possible to prevent the mobile station apparatus from transmitting reception quality information that falls below this minimum value. Here, if the resource for transmitting the reception quality information calculated based on the L1 / L2 grant is specified in the calculation formula so that it does not exceed the maximum value or fall below the minimum value, the maximum value is used using RRC signaling. , There is no need to set the minimum value.
In addition, the base station device transmits RRC signaling including information indicating the maintenance value of the resource to which the reception quality information can be arranged, and the mobile station device that receives the signal transmits the uplink data and a constant reception quality. By transmitting the information at the same time, it is possible to always transmit a certain amount of reception quality information without depending on the resources allocated by the L1 / L2 grant.
Further, when the mobile station device transmits the uplink data and the periodic reception quality information, by applying the information maintenance type arrangement method, a constant amount of reception quality information is periodically transmitted to the base station device. can do. On the other hand, when the mobile station device transmits uplink data and aperiodic reception quality information, the reception quality follows the resources allocated by the L1 / L2 grant by applying the information-increasing placement method. Information can be transmitted to the base station equipment.
According to the first and second embodiments of the present invention described above, the information transmitted using the uplink (uplink data and / or the received quality information, and / /) in the base station apparatus. Alternatively, control information that specifies the transmission format (resource information (location to resource element) and / or modulation method and / or coding rate) of HARQ ACK / NACK, etc. is transmitted, and the mobile station equipment is transmitted. In, information to be transmitted using the uplink can be transmitted to the base station device based on the transmission format specified by the base station device.
As described above, the mobile station apparatus of the present embodiment is a mobile station apparatus in a mobile communication system that transmits reception quality information indicating the quality of a signal received from the base station apparatus by the mobile station apparatus to the base station apparatus. Then, the number of symbols of the reception quality information is calculated from the amount of information of the reception quality information, the modulation method and the coding rate of the uplink data, and the reception quality information is transmitted to the base station apparatus together with the uplink data with the calculated number of symbols. It is characterized by that.
Further, in the mobile station apparatus of the present embodiment, the reception quality information is arranged on the lower frequency side with respect to the resources allocated by the base station apparatus.
Further, the mobile station apparatus of the present embodiment is a mobile station apparatus in a mobile communication system in which the mobile station apparatus transmits HARQ ACK / NACK to the downlink data to the base station apparatus, and the number of ACK / NACK symbols is set. , ACK / NACK is calculated from the amount of ACK / NACK information, the modulation method and coding rate of the uplink data, and ACK / NACK is transmitted to the base station apparatus together with the uplink data with the calculated number of symbols.
Further, the mobile station apparatus of the present embodiment is a mobile station apparatus in a mobile communication system in which the mobile station apparatus transmits reception quality information indicating the quality of a signal received from the base station apparatus to the base station apparatus, and the base. The amount of reception quality information is constant without depending on the resources allocated by the station equipment, and the number of symbols of reception quality information is calculated and calculated according to the control information for the uplink data specified by the base station equipment. It is characterized in that reception quality information is transmitted to the base station apparatus together with uplink data with the number of symbols.
Further, the mobile station apparatus of the present embodiment is a mobile station apparatus in a mobile communication system in which the mobile station apparatus transmits HARQ ACK / NACK for downlink data to the base station apparatus, and is assigned by the base station apparatus. The amount of ACK / NACK information is constant regardless of the resources, the number of ACK / NACK symbols is calculated according to the control information for the uplink data specified by the base station device, and the calculated number of symbols is used for ACK. It is characterized in that / NACK is transmitted to the base station device together with uplink data.
Further, in the mobile communication system of the present embodiment, the mobile station apparatus measures the reception quality of the signal received from the base station apparatus and transmits the reception quality information to the base station apparatus, while the base station apparatus is said to be said. A mobile communication system that allocates resources based on the reception quality information received from the mobile station device, and the base station device is a control that specifies a transmission format of information transmitted by the mobile station device using an uplink. Information is transmitted to the mobile station apparatus, and when the mobile station apparatus receives the control information from the base station apparatus, the mobile station apparatus provides both uplink data and reception quality information to the base based on the specified transmission format. It is characterized by transmitting to a station device.
Further, in the mobile communication system of the present embodiment, the transmission format of the information transmitted using the uplink is the uplink data transmission format.
In this way, the base station apparatus transmits control information to the mobile station apparatus that specifies the transmission format of the information transmitted by the mobile station apparatus using the uplink, and the mobile station apparatus transmits the control information from the base station apparatus. When it is received, both the uplink data and the reception quality information are transmitted to the base station device based on the specified transmission format, so that the transmission of the control signal for specifying the arrangement of each information can be omitted. In addition, the downlink resources can be effectively utilized. In addition, since the transmission format is specified based on how the uplink resources are allocated, the arrangement of the uplink data and the reception quality information can be changed, and the control signal for changing the arrangement of each information can be transmitted. Can be omitted. As a result, it is possible to reduce the delay that occurs when changing the arrangement of each piece of information.
Further, in the mobile communication system of the present embodiment, the base station apparatus transmits resource information specified from a frequency component and a time component as the control information to the mobile station apparatus, and the mobile station apparatus is the base. It is a transmission format based on the arrangement of the uplink data and the reception quality information corresponding to the resource information received from the station apparatus, and is characterized in that both the uplink data and the reception quality information are transmitted to the base station apparatus.
By transmitting the resource information specified from the frequency component and the time component to the mobile station apparatus in this way, the transmission when the mobile station apparatus transmits both the uplink data and the reception quality information to the base station apparatus. You can specify the format. As a result, transmission of a control signal for designating the arrangement of each information can be omitted, and downlink resources can be effectively utilized.
Further, in the mobile communication system of the present embodiment, the base station apparatus transmits information indicating the modulation method and the coding rate of uplink data to the mobile station apparatus as the control information, and the mobile station apparatus receives the control information. The modulation method and coding rate of the reception quality information corresponding to the information indicating the modulation method and coding rate of the uplink data received from the base station device are specified, and the modulation method and coding rate received from the base station device. It is characterized in that both the uplink data to which the modulation method and the coding rate of the information indicating the above are applied and the reception quality information to which the specified modulation method and the coding rate are applied are transmitted to the base station apparatus.
In this way, the base station apparatus transmits information indicating the modulation method and coding rate of the uplink data to the mobile station apparatus as control information, and the mobile station apparatus modulates the uplink data received from the base station apparatus. The modulation method and coding rate of the reception quality information corresponding to the information indicating the method and coding rate were specified, and the modulation method and coding rate of the information indicating the modulation method and coding rate received from the base station apparatus were applied. Both the uplink data and the reception quality information to which the specified modulation method and coding rate are applied are transmitted to the base station apparatus. As a result, the reception quality information transmitted by the mobile station device to the base station device can follow the modulation method and coding rate of the uplink data, and the transmission success rate of the reception quality information can be improved. It becomes.
Further, the mobile communication system of the present embodiment is a mobile communication system in which the base station apparatus allocates resources to the mobile station apparatus, and the base station apparatus uses an uplink. When the control information for specifying the transmission format of the information to be transmitted is transmitted to the mobile station device, and the mobile station device receives the control information from the base station device, the control information is uploaded based on the specified transmission format. It is characterized in that both link data and ACK / NACK are transmitted to the base station apparatus.
Further, in the mobile communication system of the present embodiment, the transmission format of the information transmitted using the uplink is the uplink data transmission format.
In this way, the base station apparatus transmits the control information that specifies the transmission format of the information transmitted by the mobile station apparatus using the uplink to the mobile station apparatus, and the mobile station apparatus transmits the control information from the base station apparatus. When received, both uplink data and ACK / NACK are transmitted to the base station device based on the specified transmission format, so transmission of the control signal for specifying the arrangement of each information can be omitted. In addition, the downlink resources can be effectively utilized. In addition, since the transmission format is specified based on how the uplink resources are allocated, the arrangement of the uplink data and ACK / NACK can be changed, and the control signal for changing the arrangement of each information is transmitted. Can be omitted. As a result, it is possible to reduce the delay that occurs when changing the arrangement of each piece of information.
Further, in the mobile communication system of the present embodiment, the base station apparatus transmits resource information specified from a frequency component and a time component as the control information to the mobile station apparatus, and the mobile station apparatus is the base. It is a transmission format based on the arrangement of uplink data and ACK / NACK corresponding to the resource information received from the station device, and is characterized in that both uplink data and ACK / NACK are transmitted to the base station device. ..
By transmitting the resource information specified from the frequency component and the time component to the mobile station device in this way, the transmission when the mobile station device transmits both the uplink data and the ACK / NACK to the base station device. You can specify the format. As a result, transmission of a control signal for designating the arrangement of each information can be omitted, and downlink resources can be effectively utilized.
Further, in the mobile communication system of the present embodiment, the base station apparatus transmits information indicating the modulation method and the coding rate of uplink data to the mobile station apparatus as the control information, and the mobile station apparatus receives the control information. The ACK / NACK modulation method and code rate corresponding to the information indicating the modulation method and code rate of the uplink data received from the base station device are specified, and the modulation method and code rate received from the base station device are specified. It is characterized in that both the uplink data to which the modulation method and the coding rate of the information indicating the above are applied and the ACK / NACK to which the specified modulation method and the coding rate are applied are transmitted to the base station apparatus.
In this way, the base station apparatus transmits information indicating the modulation method and coding rate of the uplink data to the mobile station apparatus as control information, and the mobile station apparatus modulates the uplink data received from the base station apparatus. The ACK / NACK modulation method and code rate corresponding to the information indicating the method and code rate were specified, and the modulation method and code rate of the information indicating the code rate and code rate received from the base station apparatus were applied. Both the uplink data and the ACK / NACK with the specified modulation method and code rate are transmitted to the base station device. As a result, the ACK / NACK transmitted by the mobile station device to the base station device can follow the modulation method and coding rate of the uplink data, and the ACK / NACK transmission success rate can be improved. It becomes.
Further, the base station apparatus of the present embodiment is a base station apparatus that allocates resources to the mobile station apparatus, and is a transmission format when the mobile station apparatus transmits both uplink data and reception quality information. It is characterized by including a scheduler unit for scheduling to include the control information for designating the control signal in the transmission signal, and a transmission unit for transmitting the transmission signal including the control signal to the mobile station apparatus.
In this way, since the control information that specifies the transmission format when the mobile station device transmits both the uplink data and the reception quality information is transmitted to the mobile station device, the control signal for specifying the arrangement of each information and the like is transmitted. It is possible to omit the transmission of the downlink, and it is possible to effectively utilize the resources of the downlink.
Further, in the base station apparatus of the present embodiment, the scheduler unit is characterized in that the scheduler unit performs scheduling to include resource information specified from a frequency component and a time component in the transmission signal as the control information.
By transmitting the resource information specified from the frequency component and the time component to the mobile station device in this way, the transmission format when the mobile station device transmits both the uplink data and the reception quality information to the base station device. Can be specified. As a result, transmission of a control signal for designating the arrangement of each information can be omitted, and downlink resources can be effectively utilized.
Further, in the base station apparatus of the present embodiment, the scheduler unit is characterized in that the scheduler unit performs scheduling to include information indicating the modulation method and coding rate of uplink data in the transmission signal as the control information.
In this way, as control information, information indicating the modulation method and coding rate of the uplink data is transmitted to the mobile station device, so that the mobile station device has the modulation method and coding rate of the reception quality information corresponding to the information. The uplink data to which the specified modulation method and coding rate are applied and the reception quality information to which the specified modulation method and coding rate are applied can be transmitted to the base station apparatus together. As a result, the reception quality information transmitted by the mobile station device to the base station device can follow the modulation method and coding rate of the uplink data, and the transmission success rate of the reception quality information can be improved. It becomes.
Further, the base station apparatus of the present embodiment is a base station apparatus that allocates resources to the mobile station apparatus, and is a transmission format when the mobile station apparatus transmits uplink data and ACK / NACK together. It is characterized by including a scheduler unit for scheduling to include the control information for designating the control signal in the transmission signal, and a transmission unit for transmitting the transmission signal including the control signal to the mobile station apparatus.
In this way, since the control information that specifies the transmission format when the mobile station device transmits the uplink data and the ACK / NACK together is transmitted to the mobile station device, the control signal for specifying the arrangement of each information and the like is transmitted. It is possible to omit the transmission of the downlink, and it is possible to effectively utilize the resources of the downlink.
Further, in the base station apparatus of the present embodiment, the scheduler unit is characterized in that the scheduler unit performs scheduling to include resource information specified from a frequency component and a time component in the transmission signal as the control information.
In this way, by transmitting the resource information specified from the frequency component and the time component to the mobile station device, the transmission format when the mobile station device transmits both the uplink data and the ACK / NACK to the base station device. Can be specified. As a result, transmission of a control signal for designating the arrangement of each information can be omitted, and downlink resources can be effectively utilized.
Further, in the base station apparatus of the present embodiment, the scheduler unit is characterized in that the scheduler unit performs scheduling to include information indicating the modulation method and coding rate of uplink data in the transmission signal as the control information.
In this way, as control information, information indicating the modulation method and coding rate of the uplink data is transmitted to the mobile station device, so that the mobile station device has the ACK / NACK modulation method and coding rate corresponding to the information. The uplink data to which the specified modulation method and coding rate are applied and the ACK / NACK to which the specified modulation method and coding rate are applied can be transmitted to the base station apparatus together. As a result, the ACK / NACK transmitted by the mobile station device to the base station device can follow the modulation method and coding rate of the uplink data, and the ACK / NACK transmission success rate can be improved. It becomes.
Further, the mobile station apparatus of the present embodiment is a mobile station apparatus that receives resource allocation from the base station apparatus, and controls information that specifies a transmission format of information to be transmitted using the uplink is transmitted from the base station apparatus. When the receiving unit and the receiving unit receive the control information from the base station device, both the uplink data and the reception quality information are transmitted to the base station device based on the specified transmission format. It is characterized in that it is provided with a transmission unit.
Further, in the mobile station apparatus of the present embodiment, the transmission format of the information transmitted using the uplink is the uplink data transmission format, and the receiving unit receives reception quality information from the uplink data transmission format. It is characterized by automatically recognizing the transmission format of.
In this way, when the control information is received from the base station device, the uplink data and the reception quality information are both transmitted to the base station device based on the specified transmission format, so that the base station device transmits each information. It is possible to omit the transmission of the control signal for designating the arrangement and the like, and it is possible to effectively utilize the downlink resources. In addition, since the transmission format is specified based on how the uplink resources are allocated, the arrangement of the uplink data and the reception quality information can be changed, and the control signal for changing the arrangement of each information can be transmitted. Can be omitted. As a result, it is possible to reduce the delay that occurs when changing the arrangement of each piece of information.
Further, in the mobile station apparatus of the present embodiment, when the receiving unit receives the resource information specified from the frequency component and the time component as the control information from the base station apparatus, the transmitting unit receives the resource information. It is a transmission format based on the arrangement of the uplink data and the reception quality information corresponding to the above, and is characterized in that both the uplink data and the reception quality information are transmitted to the base station apparatus.
In this way, when the resource information specified by the frequency component and the time component is received from the base station device, the transmission format for transmitting both the uplink data and the reception quality information to the base station device is specified. Become. As a result, transmission of a control signal for designating the arrangement of each information from the base station apparatus can be omitted, and downlink resources can be effectively utilized.
Further, in the mobile station apparatus of the present embodiment, when the receiving unit receives information indicating the modulation method and the coding rate of the uplink data from the base station apparatus as the control information, the transmitting unit receives the information indicating the modulation method and the coding rate of the uplink data. The modulation method and code rate of the received quality information corresponding to the information indicating the modulation method and code rate of the uplink data received from the base station device are specified, and the modulation method and code rate received from the base station device are determined. It is characterized in that both the uplink data to which the modulation method and the coding rate of the information shown are applied and the reception quality information to which the specified modulation method and the coding rate are applied are transmitted to the base station apparatus.
In this way, when information indicating the modulation method and coding rate of uplink data is received from the base station device as control information, the modulation method and coding rate of the reception quality information corresponding to the information are specified, and the information is specified. The uplink data to which the information modulation method and coding rate are applied and the reception quality information to which the specified modulation method and coding rate are applied are both transmitted to the base station apparatus. As a result, the reception quality information transmitted by the mobile station device to the base station device can follow the modulation method and coding rate of the uplink data, and the transmission success rate of the reception quality information can be improved. It becomes.
Further, the mobile station apparatus of the present embodiment is a mobile station apparatus that receives resource allocation from the base station apparatus, and controls information that specifies a transmission format of information to be transmitted using the uplink is transmitted from the base station apparatus. When the receiving unit and the receiving unit receive the control information from the base station device, both the uplink data and the ACK / NACK are transmitted to the base station device based on the specified transmission format. It is characterized in that it is provided with a transmission unit.
Further, in the mobile station apparatus of the present embodiment, the transmission format of the information transmitted using the uplink is the uplink data transmission format and the ACK / NACK transmission format.
Further, in the mobile station apparatus of the present embodiment, the transmission format of the information transmitted using the uplink is the uplink data transmission format, and the receiving unit is ACK / NACK from the uplink data transmission format. It is characterized by automatically recognizing the transmission format of.
In this way, when the control information is received from the base station device, the uplink data and the ACK / NACK are both transmitted to the base station device based on the specified transmission format, so that the base station device transmits each information. It is possible to omit the transmission of the control signal for designating the arrangement and the like, and it is possible to effectively utilize the downlink resources. In addition, since the transmission format is specified based on how the uplink resources are allocated, the arrangement of the uplink data and ACK / NACK can be changed, and the control signal for changing the arrangement of each information is transmitted. Can be omitted. As a result, it is possible to reduce the delay that occurs when changing the arrangement of each piece of information.
Further, in the mobile station apparatus of the present embodiment, when the receiving unit receives the resource information specified from the frequency component and the time component as the control information from the base station apparatus, the transmitting unit receives the resource information. It is a transmission format based on the arrangement of the uplink data and the reception quality information corresponding to the above, and is characterized in that both the uplink data and the ACK / NACK are transmitted to the base station apparatus.
In this way, when the resource information specified from the frequency component and the time component is received from the base station device, the transmission format for transmitting both the uplink data and ACK / NACK to the base station device is specified. Become. As a result, transmission of a control signal for designating the arrangement of each information from the base station apparatus can be omitted, and downlink resources can be effectively utilized.
Further, in the mobile station apparatus of the present embodiment, when the receiving unit receives information indicating the modulation method and the coding rate of the uplink data from the base station apparatus as the control information, the transmitting unit receives the information indicating the modulation method and the coding rate of the uplink data. The ACK / NACK modulation method and code rate corresponding to the information indicating the modulation method and code rate of the uplink data received from the base station device are specified, and the modulation method and code rate received from the base station device are determined. It is characterized in that both the uplink data to which the modulation method and the coding rate of the information shown are applied and the ACK / NACK to which the specified modulation method and the coding rate are applied are transmitted to the base station apparatus.
In this way, when information indicating the uplink data modulation method and code rate is received from the base station device as control information, the ACK / NACK modulation method and code rate corresponding to the information are specified, and the information is specified. The uplink data to which the information modulation method and code rate are applied and the ACK / NACK to which the specified modulation method and code rate are applied are both transmitted to the base station apparatus. As a result, the ACK / NACK transmitted by the mobile station device to the base station device can follow the modulation method and coding rate of the uplink data, and the ACK / NACK transmission success rate can be improved. It becomes.
Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and the design and the like within a range not deviating from the gist of the present invention are also within the scope of claims. include.
100 base station equipment 101 Data control unit 102 Modulation coder 103 Mapping section 104 IFFT section 105 Wireless transmitter 106 Wireless receiver 107 FFT section 108 Demodulation / decoding unit 109 Data Extractor 110 Scheduler section 111 Transmission information control unit 111a Modulation code control unit 111b Frequency selection scheduler 112 antenna 200 mobile station equipment 201 Data control unit 202 Modulation coder 203 Mapping section 204 IFFT section 205 Wireless transmitter 206 Wireless receiver 207 FFT section 208 Demodulation decoding unit 209 Data Extractor 210 Reception quality information control unit 210a Reception quality information generator 210b Reception quality measurement unit 211 antenna
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Every citation, both ways
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| JP2013176124A | Cited by | Japan | Search report |
| USRE48628E | Cited by | United States of America | Applicant |
| US8588162B2 | Cited by | United States of America | Applicant |
| JP2012044643A | Cited by | Japan | Search report |
| JP2012044645A | Cited by | Japan | Examiner |
| US9113459B2 | Cited by | United States of America | Applicant |
| US8599727B2 | Cited by | United States of America | Applicant |
| USRE48064E | Cited by | United States of America | Applicant |
| WO2006134946A1 | Cites | World Intellectual Property Organization (WIPO) | Examiner |
| WO2007024936A2 | Cites | World Intellectual Property Organization (WIPO) | Examiner |
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| KR20100044822A | Republic of Korea | A | |
| JP2010104033A | Japan | A | |
| JP2010104034A | Japan | A | |
| EP2187666A1 | European Patent Office (EPO) | A1 | |
| US2010128692A1 | United States of America | A1 | |
| EP2192714A2 | European Patent Office (EPO) | A2 | |
| JP2010141906AThis record | Japan | A | |
| US2010157836A1 | United States of America | A1 | |
| CN101772074A | China | A | |
| JPWO2009008337A1 | Japan | A1 | |
| HK1144346A1 | Hong Kong, China | A1 | |
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| JP4740374B2 | Japan | B2 | |
| JP4762350B2 | Japan | B2 | |
| JP4763837B2 | Japan | B2 | |
| EP2187666A4 | European Patent Office (EPO) | A4 | |
| JP2011217390A | Japan | A | |
| EP2192714A3 | European Patent Office (EPO) | A3 | |
| US2012134289A1 | United States of America | A1 | |
| US2012134337A1 | United States of America | A1 | |
| JP5236045B2 | Japan | B2 | |
| CN101690311B | China | B | |
| CN101772074B | China | B | |
| PT2192714E | Portugal | E | |
| KR101440665B1 | Republic of Korea | B1 | |
| US8971284B2 | United States of America | B2 | |
| EP2846560A1 | European Patent Office (EPO) | A1 | |
| US9065604B2 | United States of America | B2 | |
| EP2192714B1 | European Patent Office (EPO) | B1 | |
| DK2192714T3 | Denmark | T3 | |
| ES2549908T3 | Spain | T3 | |
| HK1204194A1 | Hong Kong, China | A1 | |
| HRP20151076T1 | Croatia | T1 | |
| US9191149B2 | United States of America | B2 | |
| US2016050058A1 | United States of America | A1 | |
| PL2192714T3 | Poland | T3 | |
| HUE025654T2 | Hungary | T2 | |
| EP2846560B1 | European Patent Office (EPO) | B1 | |
| DK2846560T3 | Denmark | T3 | |
| CY1117046T1 | Cyprus | T1 | |
| CY1115393T1 | Cyprus | T1 | |
| ES2618844T3 | Spain | T3 | |
| PL2846560T3 | Poland | T3 | |
| EP2187666B1 | European Patent Office (EPO) | B1 | |
| HUE032624T2 | Hungary | T2 | |
| ES2645098T3 | Spain | T3 | |
| DK2187666T3 | Denmark | T3 | |
| HRP20171900T1 | Croatia | T1 | |
| NO2187666T3 | Norway | T3 | |
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| HUE034885T2 | Hungary | T2 | |
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Numbers
- Publication
- 2010141906
- Application
- 10359
Titles2
- Japanese
- 移動通信システム、移動局装置、基地局装置および通信方法
- English
- Mobile communication system, mobile station equipment, base station equipment and communication method
Classification
- CPC, 17
- H04L1/0025
- H04W72/231
- H04L5/0048
- H04L1/0027
- H04L1/1664
- H04L1/1685
- H04L1/0026
- H04W72/04
- H04W72/20
- H04L5/0005
- H04L5/006
- H04W72/542
- H04W72/1268
- H04W72/21
- H04W72/23
- H04W28/04
- H04L5/0055
- IPC, 6
- H04W72 54
- H04J1 00
- H04J11 00
- H04W24 10
- H04W72 08
- H04W72 14