JP2013098952A - Mobile communication system, base station device, mobile station device and communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile communication system capable of controlling the information indicating A/N or the quality for CSI flexibly, a base station device, a mobile station device, and a communication method.SOLUTION: The mobile station device determines the number of bits of information indicating A/N depending on the number of serving cells and the downlink transmission mode in the serving cells, and determines the number of bits of information indicating A/N after encoding and the number of bits of channel state information after encoding, depending on the number of bits of information indicating A/N thus determined. If the number of bits of the channel state information after encoding goes below a predetermined value, the channel state information is dropped, and only the information indicating A/N is transmitted to a base station device by using a physical uplink control channel resource.

Description

  The present invention relates to a mobile communication system, a base station apparatus, a mobile station apparatus, and a communication method.

  Evolution of cellular mobile radio access schemes and radio networks (hereinafter LTE: Long Term Evolution or EUTRA: Evolved Universal Terrestrial Radio Access) It is being considered. In LTE, an OFDM (Orthogonal Frequency Division Multiplexing) scheme, which is multicarrier transmission, is used as a downlink communication scheme from a base station apparatus to a mobile station apparatus. Further, as an uplink communication method from the mobile station device to the base station device, a single carrier transmission SC-FDMA (Single-Carrier Frequency Division Multiple Access) method is used. Here, in LTE, a base station apparatus is also called eNodeB (evolved NodeB) and a mobile station apparatus is also called UE (User Equipment).

  Also, in LTE release 10, a technology (cell aggregation: cell aggregation, carrier aggregation: carrier aggregation) in which a base station apparatus and a mobile station apparatus communicate using a plurality of serving cells having the same channel structure as LTE release 8 / release 9 is used. (Referred to as non-patent document 1). For example, the base station apparatus and the mobile station apparatus transmit and receive information on a plurality of physical channels in the same subframe using a plurality of aggregated serving cells.

  Furthermore, in LTE Release 11, when communication is performed using cell aggregation, the mobile station apparatus transmits information indicating A / N (acknowledgment: Positive Acknowledgement / negative acknowledgment: Negative Acknowledgement, HARQ (hybrid automatic retransmission request: The information indicating A / N in Hybrid Automatic Repeat Request (also referred to as information indicating ACK / NACK) and the channel state information (CSI: Channel State Information) together are a single physical uplink control channel (PUCCH: Physical). Uplink Control Channel) resources are being considered for transmission.

  For example, in LTE release 11, when transmitting information indicating A / N and CSI together, the number of coded A / N bits and the number of coded CSI bits It has been proposed to determine the number (the number of coded CSI bits) according to the number of A / N bits (before encoding) (Non-patent Document 2).

"Carrier aggregation in LTE-Advanced", 3GPP TSG-RAN WG1 # 53bis, R1-082468, June 30-July 4, 2008. "Periodic CSI and A / N reporting for CA", 3GPP TSG-RAN WG1 # 66bis, R1-112921, October 10-14, 2011.

  However, the conventional technology cannot flexibly control the quality of information indicating A / N and / or CSI.

  The present invention has been made in view of such circumstances, and a mobile communication system, a base station apparatus, a mobile station apparatus, and a communication that can flexibly control the quality of information indicating A / N and / or CSI. Provide a method.

  (1) In order to achieve the above object, the present invention takes the following measures. That is, the mobile communication system of the present invention is a mobile communication system in which a mobile station apparatus transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource. The mobile station apparatus determines the number of bits of information indicating A / N according to the number of serving cells and the downlink transmission mode in the serving cell, and sets the determined number of bits of information indicating A / N. Accordingly, the number of bits of information indicating the encoded A / N and the number of bits of the encoded channel state information are determined, and the number of bits of the encoded channel state information is less than a predetermined value. In this case, the channel state information is dropped, and only the information indicating the A / N is transmitted to the base station apparatus using the physical uplink control channel resource, and the base station The apparatus is characterized in that only information indicating the A / N is received from the mobile station apparatus using the physical uplink control channel resource.

  (2) Further, the predetermined value is determined according to the number of bits of channel state information before encoding.

  (3) Further, the mobile station apparatus is a mobile communication system in which information indicating A / N and channel state information are transmitted to a base station apparatus using a single physical uplink control channel resource, wherein the mobile station The apparatus determines a first bit number of the encoded channel state information according to the number of bits of the information indicating the A / N, and determines an encoded channel according to the number of bits of the channel state information. A second number of bits of state information is determined, a larger value of the first number of bits and the second number of bits is selected as a third number of bits, and the encoded A / N is And the encoded channel state information of the third number of bits is transmitted to the base station apparatus using the physical uplink control channel resource, and the base station apparatus transmits the encoded A / Information indicating N and the third bit A number of encoded channel state information is received from the mobile station apparatus using the physical uplink control channel resource.

  (4) The mobile station apparatus may transmit information indicating A / N and channel state information to the base station apparatus using a single physical uplink control channel resource, and the mobile station apparatus The apparatus determines the number of bits of information indicating the A / N according to the number of serving cells and the downlink transmission mode in the serving cell, and encodes according to the number of bits of information indicating the determined A / N. The number of bits of information indicating A / N and the number of bits of encoded channel state information are determined, and the information indicating the A / N and the channel state information are determined using the physical uplink control channel resource. The base station device transmits information indicating the A / N and the channel state information from the mobile station device using the physical uplink control channel resource. And Shin, number of bits of information indicating the encoded A / N is set to equal to or less than a predetermined value.

  (5) Further, the predetermined value is determined according to the number of encoded bits that can be transmitted in a physical uplink channel format.

  (6) In addition, the predetermined value is determined according to the number of bits of channel state information before encoding that can be transmitted in a logical uplink channel format.

  (7) The predetermined value is determined according to an encoding method used for encoding the information indicating the A / N.

  (8) The mobile station apparatus may transmit information indicating A / N and channel state information to the base station apparatus using a single physical uplink control channel resource, and the mobile station apparatus The apparatus determines the number of bits of information indicating the A / N according to the number of serving cells and the downlink transmission mode in the serving cell, and encodes according to the number of bits of information indicating the determined A / N. Determining the number of bits of the information indicating the A / N and the number of bits of the encoded channel state information, the information indicating the encoded A / N of the determined number of bits and the code of the determined number of bits After concatenating the converted channel state information, interleaving is performed in units of two encoded bits, and the interleaved information indicating the A / N and the channel state information are transferred to the physical uplink control. Using the control channel resource, the base station device transmits the information indicating the interleaved A / N and the channel state information using the physical uplink control channel resource. It is characterized by receiving from a mobile station apparatus.

  (9) A base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource, the number of serving cells and the downlink in the serving cell The number of bits of information indicating A / N is determined according to a link transmission mode, and the number of bits of information indicating A / N after coding is determined according to the number of bits of information indicating A / N thus determined. When the number of bits of channel state information after coding is determined and the number of bits of channel state information after coding is below a predetermined value, only the information indicating the A / N is transmitted to the physical uplink control channel It receives from the said mobile station apparatus using a resource, It is characterized by the above-mentioned.

  (10) A base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource, wherein the information indicating the A / N According to the number of bits, determine the first number of bits of the channel state information after encoding, determine the second number of bits of the channel state information after encoding according to the number of bits of the channel state information, A larger value of the first number of bits and the second number of bits is selected as a third number of bits, and information indicating A / N after encoding and encoding of the third number of bits The subsequent channel state information is received from the mobile station apparatus using the physical uplink control channel resource.

  (11) A base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource, the number of serving cells and the downlink in the serving cell The number of bits of information indicating A / N is determined according to a link transmission mode, and the number of bits of information indicating A / N after coding is determined according to the number of bits of information indicating A / N thus determined. The number of bits of the channel state information after coding is determined, information indicating the A / N and the channel state information are received from the mobile station apparatus using the physical uplink control channel resource, and the A The number of bits of information indicating / N is not more than a predetermined value.

  (12) A base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource, the number of serving cells and the downlink in the serving cell The number of bits of information indicating A / N is determined according to the link transmission mode, and the number of bits of information indicating A / N encoded according to the determined number of bits of information indicating A / N And determining the number of bits of the encoded channel state information, concatenating the information indicating the encoded A / N of the determined number of bits and the encoded channel state information of the determined number of bits, Interleaved in units of two encoded bits, and the interleaved information indicating the A / N and the channel state information are transferred using the physical uplink control channel resource. It is characterized by receiving from a mobile station device.

  (13) A mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource, the number of serving cells and the downlink in the serving cell The number of bits of information indicating A / N is determined according to a link transmission mode, and the number of bits of information indicating A / N after coding is determined according to the number of bits of information indicating A / N thus determined. The number of bits of channel state information after coding is determined, and when the number of bits of channel state information after coding is below a predetermined value, the channel state information is dropped and information indicating the A / N Is transmitted to the base station apparatus using the physical uplink control channel resource.

  (14) A mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource, wherein the information indicating the A / N According to the number of bits, determine the first number of bits of the channel state information after encoding, determine the second number of bits of the channel state information after encoding according to the number of bits of the channel state information, A larger value of the first number of bits and the second number of bits is selected as a third number of bits, and information indicating A / N after encoding and encoding of the third number of bits The subsequent channel state information is transmitted to the base station apparatus using the physical uplink control channel resource.

  (15) A mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource, the number of serving cells and the downlink in the serving cell The number of bits of information indicating A / N is determined according to a link transmission mode, and the number of bits of information indicating A / N after coding is determined according to the number of bits of information indicating A / N thus determined. The number of bits of the channel state information after coding is determined, information indicating the A / N and the channel state information are transmitted to the base station apparatus using the physical uplink control channel resource, and the A The number of bits of information indicating / N is not more than a predetermined value.

  (16) A mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource, the number of serving cells and the downlink in the serving cell The number of bits of information indicating A / N is determined according to the link transmission mode, and the number of bits of information indicating A / N encoded according to the determined number of bits of information indicating A / N And determining the number of bits of the encoded channel state information, concatenating the information indicating the encoded A / N of the determined number of bits and the encoded channel state information of the determined number of bits, Interleaving in units of two encoded bits, and using the physical uplink control channel resource, the base state information and the channel state information indicating the interleaved A / N are transmitted to the base station It is characterized by transmitting to a station device.

  (17) A communication method of a base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource, the number of serving cells, In accordance with the downlink transmission mode in the serving cell, the number of bits of information indicating the A / N is determined, and in accordance with the number of bits of information indicating the determined A / N, The number of bits and the number of bits of channel state information after coding are determined, and when the number of bits of channel state information after coding is below a predetermined value, only the information indicating the A / N is transferred to the physical uplink. It receives from the said mobile station apparatus using a link control channel resource, It is characterized by the above-mentioned.

  (18) A base station apparatus communication method for receiving information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource, wherein the A / N is The first bit number of the channel state information after encoding is determined according to the number of bits of the indicated information, and the second bit number of the channel state information after encoding is determined according to the bit number of the channel state information. A larger value of the first number of bits and the second number of bits is selected as a third number of bits, and information indicating A / N after encoding and the third number of bits Is received from the mobile station apparatus using the physical uplink control channel resource.

  (19) A communication method of a base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource, the number of serving cells, In accordance with the downlink transmission mode in the serving cell, the number of bits of information indicating the A / N is determined, and in accordance with the number of bits of information indicating the determined A / N, Determining the number of bits and the number of bits of the channel state information after encoding, receiving the information indicating the A / N and the channel state information from the mobile station apparatus using the physical uplink control channel resource, The number of bits of information indicating the subsequent A / N is not more than a predetermined value.

  (20) A communication method of a base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource, the number of serving cells, Information indicating the A / N encoded according to the number of bits indicating the A / N determined according to the downlink transmission mode in the serving cell. The number of bits and the number of bits of the encoded channel state information are determined, and the information indicating the encoded A / N of the determined number of bits and the encoded channel state information of the determined number of bits are concatenated After that, interleaving is performed in units of two encoded bits, and the physical uplink control channel resource is used for the interleaved information indicating the A / N and the channel state information. And receiving from the mobile station apparatus.

  (21) A communication method of a mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource, the number of serving cells being In accordance with the downlink transmission mode in the serving cell, the number of bits of information indicating the A / N is determined, and in accordance with the number of bits of information indicating the determined A / N, The number of bits and the number of bits of channel state information after coding are determined, and when the number of bits of channel state information after coding is below a predetermined value, the channel state information is dropped, and the A / N Is transmitted to the base station apparatus using the physical uplink control channel resource.

  (22) A communication method of a mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource, wherein the A / N is The first bit number of the channel state information after encoding is determined according to the number of bits of the indicated information, and the second bit number of the channel state information after encoding is determined according to the bit number of the channel state information. A larger value of the first number of bits and the second number of bits is selected as a third number of bits, and information indicating A / N after encoding and the third number of bits The channel state information after encoding is transmitted to the base station apparatus using the physical uplink control channel resource.

  (23) A mobile station apparatus communication method that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource, the number of serving cells, In accordance with the downlink transmission mode in the serving cell, the number of bits of information indicating the A / N is determined, and in accordance with the number of bits of information indicating the determined A / N, Determining the number of bits and the number of bits of the channel state information after coding, transmitting the information indicating the A / N and the channel state information to the base station apparatus using the physical uplink control channel resource, and The number of bits of information indicating the A / N after the sign is not more than a predetermined value.

  (24) A communication method of a mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource, the number of serving cells being Information indicating the A / N encoded according to the number of bits indicating the A / N determined according to the downlink transmission mode in the serving cell. The number of bits and the number of bits of the encoded channel state information are determined, and the information indicating the encoded A / N of the determined number of bits and the encoded channel state information of the determined number of bits are concatenated After that, interleaving is performed in units of two coded bits, and the interleaved information indicating the A / N and the channel state information are used using the physical uplink control channel resource. And transmitting to the base station apparatus.

  According to the present invention, it is possible to flexibly control the quality of information indicating A / N and / or CSI.

It is a figure which shows notionally the structure of the physical channel which concerns on this embodiment. It is a block diagram which shows schematic structure of the base station apparatus which concerns on this embodiment. It is a block diagram which shows schematic structure of the mobile station apparatus which concerns on this embodiment. It is a figure which shows the example of the mobile communication system which can apply this embodiment. It is a figure explaining the coding method which concerns on this embodiment. It is a figure which shows an example of the code word of a Reed-Muller encoder. It is a figure explaining this embodiment. It is another figure explaining this embodiment. It is another figure explaining this embodiment. It is another figure explaining the method of interleaving.

Next, embodiments according to the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of a physical channel according to the present embodiment. Here, a physical channel (physical resource block) is defined by a time domain and a frequency domain.

  As shown in FIG. 1, downlink physical channels include a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), and the like. The uplink physical channel includes a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and the like.

  Here, the PDCCH transmits downlink control information (DCI: Downlink Control Information) such as downlink scheduling information (downlink assignment) and uplink scheduling information (uplink grant: uplink grant) ( This is a physical channel used for notification and designation). Here, a plurality of formats are defined for transmission of downlink control information. A format used for transmission of downlink control information is also called a DCI format (Downlink Control Information format).

  For example, DCI format 1 is used for scheduling one PDSCH in one downlink cell in (single antenna port transmission mode). DCI format 2 is used for scheduling one PDSCH in one downlink cell in the multi-antenna port mode. That is, DCI format 1 and DCI format 2 are downlink assignments used for PDSCH scheduling.

  That is, for example, in DCI format 1 and DCI format 2, resource allocation information for PDSCH (Resource block assignment), information on modulation scheme and coding rate for PDSCH (downlink transport block transmitted on PDSCH) (MCS: Information fields such as Modulation and Coding Scheme (fields mapped to information bits, also called bit fields) are defined. Here, one certain downlink assignment includes scheduling information for one PDSCH in a certain cell.

  Also, for example, DCI format 0 is used for scheduling one PUSCH in one uplink cell (in single antenna port transmission mode). DCI format 4 is used for scheduling one PUSCH in one uplink cell in the multi-antenna port mode. That is, DCI format 0 and DCI format 4 are uplink grants used for PUSCH scheduling.

  That is, for example, in DCI format 0 and DCI format 4, resource allocation information for PUSCH (Resource block assignment), information on modulation scheme and coding rate for PUSCH (uplink transport block transmitted on PUSCH) (MCS: Information fields such as Modulation and Coding Scheme are defined. Here, one uplink assignment includes scheduling information for one PUSCH in a certain cell.

  When the PDSCH resource allocation is transmitted on the PDCCH addressed to the mobile station device, the mobile station device uses the PDSCH in accordance with the instructed resource allocation to transmit a downlink signal (downlink data (downlink shared). A channel (transport block for DL-SCH: Downlink Shared Channel) and / or downlink control data (downlink control information) is received.

  In addition, when the PUSCH resource allocation is transmitted on the PDCCH addressed to the mobile station device, the mobile station device uses the PUSCH according to the instructed resource allocation, and uses the uplink signal (uplink data (uplink data (uplink A link shared channel (transport block for UL-SCH) and / or uplink control data (uplink control information) is transmitted.

  PDSCH is a channel used to transmit downlink data (transport block for downlink shared channel (DL-SCH)) or paging information (transport block for paging channel (PCH)). is there. The base station apparatus transmits downlink data to the mobile station apparatus using the PDSCH assigned by the PDCCH.

  Here, the downlink data indicates, for example, user data, and DL-SCH is a transport channel. Here, the downlink transport block is a unit handled in a MAC (Medium Access Control) layer. Also, the downlink transport block is associated with a codeword in the physical layer. That is, the downlink transport block is a unit of data supplied (delivered) from the MAC layer to the physical layer.

  Furthermore, PUSCH is a physical channel mainly used for transmitting uplink data (transport block for uplink shared channel (UL-SCH)). A mobile station apparatus transmits uplink data to a base station apparatus using PUSCH allocated by PDCCH. When the base station apparatus schedules the mobile station apparatus, uplink control information (UCI) is also transmitted using PUSCH.

  Here, the uplink data indicates, for example, user data, and UL-SCH is a transport channel. Here, the uplink transport block is a unit handled in the MAC layer. Further, the uplink transport block is associated with a codeword in the physical layer. That is, the uplink transport block is a unit of data supplied (delivered) from the MAC layer to the physical layer.

  The PUCCH is a physical channel used for transmitting uplink control information (UCI). Here, the uplink control information includes information indicating A / N for downlink data (downlink transport block). Further, the uplink control information includes channel state information (CSI) for the downlink signal. Further, the CSI includes a channel quality identifier (CQI), a precoding matrix identifier (PMI), and a rank identifier (RI). Also, the uplink control information includes a scheduling request (SR) used for requesting allocation of resources for the mobile station apparatus to transmit uplink data.

  Here, a plurality of formats are defined (supported) for the PUCCH. A format supported for PUCCH is also referred to as a PUCCH format.

  For example, in PUCCH format 1 (PUCCH format 1a / 1b), BPSK or QPSK is supported as an applied modulation scheme. Also, in PUCCH format 1 (PUCCH format 1a / 1b), 1 bit or 2 bits are supported as the number of bits that can be transmitted around a subframe (the number of encoded bits).

  Further, for example, in PUCCH format 2 (PUCCH format 2a / 2b), BPSK or QPSK is supported as an applied modulation scheme. In PUCCH format 2 (PUCCH format 2a / 2b), 20 bits, 21 bits, or 22 bits are supported as the number of bits that can be transmitted around a subframe (the number of encoded bits).

  Further, for example, in PUCCH format 3, QPSK is supported as an applied modulation scheme. In PUCCH format 3, 48 bits are supported as the number of bits that can be transmitted around a subframe (the number of encoded bits).

  Here, for example, information indicating A / N and / or SR is transmitted using PUCCH format 1 (PUCCH format 1a / 1b). Also, information indicating A / N and / or CSI is transmitted using PUCCH format 2 (PUCCH format 2a / 2b). Also, using PUCCH format 3, information indicating A / N and / or CSI and / or SR is transmitted.

  Further, the base station device and the mobile station device exchange (transmit / receive) signals in the higher layer. For example, the base station apparatus and the mobile station apparatus transmit radio resource control signals (RRC signaling: RRC message: also called Radio Resource Control message) in the radio resource control (RRC: Radio Resource Control) layer. Send and receive.

  Here, in the RRC layer, a dedicated signal transmitted from a base station apparatus to a certain mobile station apparatus is also referred to as dedicated signaling. Further, the base station device and the mobile station device transmit and receive MAC control elements in a MAC (Medium Access Control) layer. Here, the RRC signaling and / or MAC control element is also referred to as higher layer signaling.

[Configuration of base station apparatus]
FIG. 2 is a block diagram illustrating a schematic configuration of the base station apparatus 100 according to the present embodiment. The base station apparatus 100 includes a data control unit 101, a transmission data modulation unit 102, a radio unit 103, a scheduling unit 104, a channel estimation unit 105, a received data demodulation unit 106, a data extraction unit 107, and an upper layer. 108 and an antenna 109. The radio unit 103, the scheduling unit 104, the channel estimation unit 105, the reception data demodulation unit 106, the data extraction unit 107, the upper layer 108 and the antenna 109 constitute a reception unit, and the data control unit 101, the transmission data modulation unit 102, The radio unit 103, the scheduling unit 104, the upper layer 108, and the antenna 109 constitute a transmission unit. Here, each part which comprises the base station apparatus 100 is also called a unit.

  The antenna 109, the radio unit 103, the channel estimation unit 105, the reception data demodulation unit 106, and the data extraction unit 107 perform processing on the uplink physical layer. The antenna 109, the radio unit 103, the transmission data modulation unit 102, and the data control unit 101 perform downlink physical layer processing.

  The data control unit 101 receives a transport channel from the scheduling unit 104. The data control unit 101 maps the transport channel and the signal and channel generated in the physical layer to the physical channel based on the scheduling information input from the scheduling unit 104. Each piece of data mapped as described above is output to transmission data modulation section 102.

  The transmission data modulation unit 102 modulates transmission data to the OFDM scheme. The transmission data modulation unit 102 applies the scheduling information from the scheduling unit 104 to the data input from the data control unit 101 and the modulation scheme and coding scheme corresponding to each physical resource block (PRB). Based on this, it performs signal processing such as coding, serial / parallel conversion of input signals, IFFT (Inverse Fast Fourier Transform) processing, CP (Cyclic Prefix) insertion, and filtering to generate transmission data. To the wireless unit 103.

  Here, the scheduling information includes PRB allocation information, for example, PRB position information composed of frequency and time, and the modulation scheme and coding scheme corresponding to each PRB include, for example, modulation scheme: 16QAM, Encoding rate: Information such as 2/3 coding rate is included.

  Radio section 103 up-converts the modulation data input from transmission data modulation section 102 to a radio frequency to generate a radio signal, and transmits the radio signal to mobile station apparatus 200 via antenna 109. Radio section 103 receives an uplink radio signal from mobile station apparatus 200 via antenna 109, down-converts it into a baseband signal, and receives received data as channel estimation section 105 and received data demodulation section 106. And output.

  The scheduling unit 104 performs MAC layer processing. The scheduling unit 104 performs mapping between logical channels and transport channels, downlink and uplink scheduling (HARQ processing, selection of transport format, etc.), and the like. Since the scheduling unit 104 controls the processing units of each physical layer in an integrated manner, the scheduling unit 104, the antenna 109, the radio unit 103, the channel estimation unit 105, the reception data demodulation unit 106, the data control unit 101, the transmission data modulation An interface between the unit 102 and the data extraction unit 107 exists.

  In downlink scheduling, the scheduling unit 104 performs uplink control information received from the mobile station apparatus 200, PRB information usable in each mobile station apparatus 200, buffer status, and scheduling input from the upper layer 108. Based on information, etc., it is used for downlink transport format (transmission form, ie, PRB allocation, modulation scheme and coding scheme) selection processing for modulation of each data, HARQ retransmission control and downlink Scheduling information is generated. The scheduling information used for downlink scheduling is output to the data control unit 101.

  Further, in uplink scheduling, the scheduling unit 104 estimates the uplink channel state (radio channel state) output from the channel estimation unit 105, the resource allocation request from the mobile station device 200, and each mobile station device 200. Uplink transport format for modulating each data based on the PRB information that can be used in the network, scheduling information input from the higher layer 108, etc. (transmission form, ie, PRB allocation, modulation scheme and encoding) The scheduling information used for the selection process of the method and the scheduling of the uplink is generated. Scheduling information used for uplink scheduling is output to the data control unit 101.

  In addition, the scheduling unit 104 maps the downlink logical channel input from the higher layer 108 to the transport channel, and outputs it to the data control unit 101. In addition, the scheduling unit 104 processes the control data and the transport channel acquired in the uplink input from the data extraction unit 107 as necessary, maps them to the uplink logical channel, and outputs them to the upper layer 108. To do.

  Channel estimation section 105 estimates an uplink channel state from an uplink demodulation reference signal (UDRS) for demodulation of uplink data, and outputs the estimation result to reception data demodulation section 106. To do. In addition, in order to perform uplink scheduling, an uplink channel state is estimated from an uplink measurement reference signal (SRS), and the estimation result is output to the scheduling section 104.

  The reception data demodulator 106 also serves as an OFDM demodulator and / or a DFT-Spread-OFDM (DFT-S-OFDM) demodulator that demodulates received data modulated by the OFDM scheme and / or SC-FDMA scheme. Based on the uplink channel state estimation result input from the channel estimation unit 105, the reception data demodulation unit 106 performs DFT conversion, subcarrier mapping, IFFT conversion, filtering, and the like on the modulation data input from the radio unit 103. Are subjected to demodulation processing and output to the data extraction unit 107.

  The data extraction unit 107 confirms whether the data input from the reception data demodulation unit 106 is correct and outputs a confirmation result (ACK or NACK) to the scheduling unit 104. The data extraction unit 107 separates the data input from the reception data demodulation unit 106 into a transport channel and physical layer control data, and outputs the data to the scheduling unit 104. The separated control data includes CSI and HARQ control information transmitted from the mobile station apparatus 200, a scheduling request, and the like.

  The upper layer 108 performs processing of a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a radio resource control (RRC) layer. The upper layer 108 integrates and controls the processing units of the lower layer, so the upper layer 108, the scheduling unit 104, the antenna 109, the radio unit 103, the channel estimation unit 105, the received data demodulation unit 106, the data control unit 101, There is an interface between the transmission data modulation unit 102 and the data extraction unit 107.

  The upper layer 108 has a radio resource control unit 110 (also referred to as a control unit). The radio resource control unit 110 also manages various setting information, system information, paging control, communication state management of each mobile station device 200, mobility management such as handover, and buffer status for each mobile station device 200. Management, management of unicast and multicast bearer connection settings, management of mobile station identifiers (UEID), and the like. Upper layer 108 exchanges information with another base station apparatus 100 and information with an upper node.

[Configuration of mobile station device]
FIG. 3 is a block diagram showing a schematic configuration of the mobile station apparatus 200 according to the present embodiment. The mobile station apparatus 200 includes a data control unit 201, a transmission data modulation unit 202, a radio unit 203, a scheduling unit 204, a channel estimation unit 205, a reception data demodulation unit 206, a data extraction unit 207, and an upper layer. 208 and an antenna 209. The data control unit 201, transmission data modulation unit 202, radio unit 203, scheduling unit 204, higher layer 208, and antenna 209 constitute a transmission unit, and the radio unit 203, scheduling unit 204, channel estimation unit 205, received data demodulation unit Unit 206, data extraction unit 207, upper layer 208, and antenna 209 constitute a reception unit. Here, each part which comprises the mobile station apparatus 200 is also called a unit.

  The data control unit 201, the transmission data modulation unit 202, and the radio unit 203 perform processing on the uplink physical layer. The radio unit 203, the channel estimation unit 205, the received data demodulation unit 206, and the data extraction unit 207 perform downlink physical layer processing.

  The data control unit 201 receives a transport channel from the scheduling unit 204. The transport channel and the signal and channel generated in the physical layer are mapped to the physical channel based on the scheduling information input from the scheduling unit 204. Each piece of data mapped in this way is output to transmission data modulation section 202.

  The transmission data modulation unit 202 modulates transmission data into the OFDM scheme and / or the SC-FDMA scheme. The transmission data modulation unit 202 performs data modulation, DFT (Discrete Fourier Transform) processing, subcarrier mapping, IFFT (Inverse Fast Fourier Transform) processing, CP insertion, filtering, and other signals on the data input from the data control unit 201. Processing is performed, transmission data is generated, and output to the wireless unit 203.

  Radio section 203 up-converts the modulation data input from transmission data modulation section 202 to a radio frequency, generates a radio signal, and transmits the radio signal to base station apparatus 100 via antenna 209. Radio section 203 receives a radio signal modulated with downlink data from base station apparatus 100 via antenna 209, down-converts it to a baseband signal, and receives the received data as channel estimation section 205. And output to the received data demodulation section 206.

  The scheduling unit 204 performs MAC layer processing. The scheduling unit 104 performs mapping between logical channels and transport channels, downlink and uplink scheduling (HARQ processing, selection of transport format, etc.), and the like. Since the scheduling unit 204 controls the processing units of each physical layer in an integrated manner, the scheduling unit 204, the antenna 209, the data control unit 201, the transmission data modulation unit 202, the channel estimation unit 205, the reception data demodulation unit 206, the data There is an interface between the extraction unit 207 and the wireless unit 203.

  In downlink scheduling, the scheduling unit 204 controls reception of transport channels, physical signals, and physical channels based on scheduling information (transport format and HARQ retransmission information) from the base station apparatus 100 and the upper layer 208, and the like. Scheduling information used for HARQ retransmission control and downlink scheduling is generated. The scheduling information used for downlink scheduling is output to the data control unit 201.

  In uplink scheduling, the scheduling unit 204 receives the uplink buffer status input from the higher layer 208 and uplink scheduling information from the base station apparatus 100 input from the data extraction unit 207 (transport format and HARQ retransmission). Information), and scheduling processing for mapping the uplink logical channel input from the upper layer 208 to the transport channel and the uplink scheduling based on the scheduling information input from the upper layer 208, etc. Scheduling information to be generated is generated. Note that the information notified from the base station apparatus 100 is used for the uplink transport format. The scheduling information is output to the data control unit 201.

  Also, the scheduling unit 204 maps the uplink logical channel input from the higher layer 208 to the transport channel, and outputs it to the data control unit 201. The scheduling unit 204 also outputs the channel state information input from the channel estimation unit 205 and the CRC (Cyclic Redundancy Check) confirmation result input from the data extraction unit 207 to the data control unit 201. In addition, the scheduling unit 204 processes the control data and the transport channel acquired in the downlink input from the data extraction unit 207 as necessary, maps them to the downlink logical channel, and outputs them to the upper layer 208. To do.

  Channel estimation section 205 estimates the downlink channel state from the downlink reference signal and outputs the estimation result to reception data demodulation section 206 in order to demodulate the downlink data. Further, the channel estimation unit 205 estimates the downlink channel state from the downlink reference signal in order to notify the base station apparatus 100 of the estimation result of the downlink channel state, and uses this estimation result as channel state information. To the scheduling unit 204.

  Received data demodulation section 206 demodulates received data modulated by the OFDM method. Reception data demodulation section 206 performs demodulation processing on the modulated data input from radio section 203 based on the downlink channel state estimation result input from channel estimation section 205 and outputs the result to data extraction section 207. To do.

  The data extraction unit 207 performs CRC on the data input from the reception data demodulation unit 206 to confirm the correctness and outputs a confirmation result (information indicating ACK or NACK) to the scheduling unit 204. The data extraction unit 207 separates the data input from the reception data demodulation unit 206 into transport channel and physical layer control data, and outputs the data to the scheduling unit 204. The separated control data includes scheduling information such as downlink or uplink resource allocation and uplink HARQ control information.

  The upper layer 208 performs processing of a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a radio resource control (RRC) layer. The upper layer 208 integrates and controls the processing units of the lower layer, so that the upper layer 208, the scheduling unit 204, the antenna 209, the data control unit 201, the transmission data modulation unit 202, the channel estimation unit 205, the reception data demodulation unit 206, an interface between the data extraction unit 207 and the wireless unit 203 exists.

  The upper layer 208 has a radio resource control unit 210 (also referred to as a control unit). The radio resource control unit 210 manages various setting information, system information, paging control, own station communication status, mobility management such as handover, buffer status management, unicast and multicast bearer connection setting. Management and management of mobile station identifier (UEID).

(First embodiment)
Next, the present embodiment in a mobile communication system using the base station apparatus 100 and the mobile station apparatus 200 will be described. In this embodiment, the mobile station apparatus determines the number of bits of information indicating A / N according to the number of serving cells and the downlink transmission mode in the serving cell, and according to the determined number of bits of information indicating A / N. Thus, the number of bits of information indicating the encoded A / N and the number of bits of the encoded CSI are determined, and if the number of bits of the encoded CSI is below a predetermined value, the CSI is Drop and transmit only the information indicating A / N to the base station apparatus using the PUCCH resource, and the base station apparatus receives only the information indicating A / N from the mobile station apparatus using the PUCCU resource. Here, the predetermined value is determined according to the number of bits of CSI before encoding.

  Further, the mobile station apparatus determines a first bit number of encoded CSI according to the number of bits of information indicating A / N, and determines the first number of encoded CSI according to the number of bits of CSI. 2 is determined, a larger value of the first bit number and the second bit number is selected as the third bit number, and information indicating the encoded A / N and the third bit number are selected. The encoded CSI having the number of bits is transmitted to the base station apparatus using the PUCCH resource, and the base station apparatus transmits the information indicating the encoded A / N and the encoded CSI having the third number of bits. Is received from the mobile station apparatus using the PUCCH resource.

  Further, the mobile station apparatus determines the number of bits of information indicating A / N according to the number of serving cells and the downlink transmission mode in the serving cell, and codes according to the determined number of bits of information indicating A / N. The number of bits of information indicating the converted A / N and the number of bits of the encoded CSI are determined, and the information and CSI indicating the A / N are transmitted to the base station apparatus using the PUCCH resource. The apparatus receives information indicating A / N and CSI from the mobile station apparatus using the PUCCH resource, and at this time, the number of bits of the encoded information indicating A / N is equal to or less than a predetermined value. . Here, the predetermined value is determined according to the number of encoded bits that can be transmitted in the PUCCH resource (or PUCCH format) format. The predetermined value is determined according to the number of bits of CSI before encoding that can be transmitted in the PUCCH resource (or PUCCH format) format. Further, the predetermined value is determined according to an encoding method used for encoding information indicating A / N.

  Further, the mobile station apparatus determines the number of bits of information indicating A / N according to the number of serving cells and the downlink transmission mode in the serving cell, and codes according to the determined number of bits of information indicating A / N. The number of bits of information indicating the converted A / N and the number of bits of the encoded CSI are determined, and the information indicating the encoded A / N of the determined number of bits and the determined number of bits are encoded After concatenating the CSI, interleaving is performed in units of two encoded bits, and information indicating the interleaved A / N and CSI are transmitted to the base station apparatus using the PUCCH resource. Information indicating / N and CSI are received from the mobile station apparatus using the PUCCH resource.

[About cell aggregation (carrier aggregation)]
FIG. 4 is a diagram for explaining cell aggregation (or carrier aggregation) according to the present embodiment. In this embodiment, cell aggregation is supported on the uplink and downlink, and for example, each serving cell can have a transmission bandwidth of up to 110 resource blocks.

  FIG. 4 shows that three serving cells (serving cell 1, serving cell 2, and serving cell 3) are aggregated. Here, the serving cell in the downlink is also referred to as a downlink cell. A serving cell in the uplink is also referred to as an uplink cell.

  Here, the mobile communication system (base station apparatus and mobile station apparatus) according to this embodiment supports a radio frame structure applied to FDD (Frequency Division Duplex) and / or TDD (Time Division Duplex).

  In FIG. 4, the base station apparatus sets one or a plurality of serving cell sets that may be used for communication (may be assigned PDCCH and / or PDSCH and / or PUSCH) for the mobile station apparatus. For example, the base station apparatus sets a serving cell set for the mobile station apparatus using RRC signaling (may be dedicated signaling).

  Furthermore, the base station apparatus sets the downlink transmission mode for each mobile cell for the mobile station apparatus. For example, the base station apparatus sets a downlink transmission mode (single antenna port mode) in which one downlink transport block is transmitted to the mobile station apparatus. Also, for example, the base station apparatus sets a mode (multi-antenna port mode) that supports (allows transmission) transmission of up to two downlink transport blocks for the mobile station apparatus. For example, the base station apparatus sets the downlink transmission mode for each serving cell for the mobile station apparatus using RRC signaling (may be dedicated signaling).

  Here, in FIG. 4, for example, one serving cell among the aggregated plurality of serving cells is defined as a primary cell (Pcell). For example, the primary cell is defined as a serving cell having the same function as the LTE Release 8 / Release 9 cell. Further, for example, the primary cell is a cell in which the mobile station apparatus performs an initial connection establishment procedure, a cell in which the mobile station apparatus starts a connection re-establishment procedure, or a handover procedure. Defined as the cell designated as the primary cell. Further, for example, the PUCCH may be arranged only in the primary cell. Here, the base station apparatus can instruct the primary cell to the mobile station apparatus using RRC signaling (may be dedicated signaling).

  In FIG. 4, the serving cell excluding the primary cell is defined as a secondary cell (Scell). The secondary cell is mainly used to provide an additional radio resource to the mobile station apparatus, and is used for transmission / reception of information on PDSCH, PUSCH, and PRACH. For example, the base station apparatus can instruct the secondary cell to the mobile station apparatus using RRC signaling (may be dedicated signaling).

  Here, a carrier corresponding to a serving cell in the downlink is defined as a downlink component carrier (DLCC). A carrier corresponding to a serving cell in the uplink is defined as an uplink component carrier (ULCC).

  A carrier corresponding to a primary cell in the downlink is defined as a downlink primary component carrier (DLPCC). A carrier corresponding to a secondary cell in the downlink is defined as a downlink secondary component carrier (DLSCC). Further, a carrier corresponding to a primary cell in the uplink is defined as an uplink primary component carrier (ULPCC). Furthermore, the carrier corresponding to the secondary cell in the uplink is defined as an uplink secondary component carrier (ULSCCC).

  Moreover, in FIG. 4, each physical channel (for example, PDCCH, PDSCH, PUSCH, PUCCH) is arrange | positioned at any one serving cell. For example, one PDCCH is arranged in one serving cell (DLCC). Also, for example, one PUSCH is arranged in one serving cell (ULCC).

[Encoding method]
FIG. 5 is a diagram conceptually illustrating the encoding method according to the present embodiment. In the present embodiment, the mobile station apparatus transmits information (A / N bit) indicating A / N and / or CSI (CSI bit) using a single PUCCH resource. Further, the mobile station apparatus transmits information (A / N bit) indicating A / N and / or CSI (CSI bit) and / or SR (SR bit) using a single PUCCH resource.

  Here, as shown in FIG. 5, the A / N bit and the CSI bit are input to two Reed Muller encoders (RM encoder) and encoded. Here, when transmission of information indicating A / N, transmission of CSI, and transmission of SR occur in the same subframe (collision), processing is performed with the SR bit included in the A / N bit. . That is, the A / N bit includes the SR bit and is defined as the A / N bit. Hereinafter, the processing related to the A / N bit and the CSI bit will be basically described, but the same processing is performed even if the A / N bit includes the SR bit and is defined as the A / N bit.

FIG. 6 is a diagram illustrating an example of a codeword used in the Reed Muller encoder. That is, the A / N bit and the CSI bit are encoded using two (32, o ^ACK ) block codes as shown in FIG. Here, for example, as a codeword of a block code (32, o ^ACK ) used for encoding, a linear combination of 11 base sequences indicated by M _{i, n} is used.

  In FIG. 5, for example, an A / N bit (before encoding), a CSI bit (before encoding), and two Reed Muller encoders are input. Furthermore, the bit sequence (also referred to as an encoded block) output from each of the two Reed-Muller encoders is rate-matched and output as encoded A / N bits and encoded CSI bits. That is, for example, 32 bits are output as encoded A / N bits and 16 bits are output as encoded CSI bits.

  Further, for example, the encoded A / N bit and the encoded CSI bit are interleaved and output as a 48-bit bit sequence. Also, QPSK is applied to the output 48-bit bit sequence, and 24 modulation symbols are output. Further, 12 modulation symbols out of 24 modulation symbols are mapped to the first slot (first 0.5 ms) of one subframe (1 ms), and the remaining 12 modulation symbols are mapped to the first subframe (1 ms). Maps to 2 slots (0.5 ms remaining).

  Here, the number of encoded A / N bits and the number of encoded CSI bits are determined using the number of A / N bits (before encoding). The number of A / N bits (before encoding) is determined using the number of serving cells (number of downlink cells) and the downlink transmission mode in each serving cell (each downlink cell). Here, for example, when the downlink transmission mode supports transmission of up to two downlink transport blocks, two A / N bits are generated. In other cases (for example, when the downlink transmission mode supports transmission of one downlink transport block), one A / N bit is generated.

  Here, the number of A / N bits (before encoding) is the number of serving cells, the downlink transmission mode in each serving cell, and the downlink corresponding to information indicating ACK / NACK transmitted in a certain uplink subframe. It may be determined using the number of link subframes. For example, when TDD is set as a communication method between the base station apparatus and the mobile station apparatus, it indicates the number of serving cells, the downlink transmission mode in each serving cell, and the A / N transmitted in a certain uplink subframe. Using the number of downlink subframes corresponding to the information, the number of A / N bits (before encoding) may be determined.

FIG. 7 shows the number of A / N bits (before encoding) (O ^ACK ), the number of encoded A / N bits (Q ^′ _{A / N} · Q _m ), and information indicating A / N. An example of correspondence between the number of modulation symbols (Q ^′ _{A / N} ), the number of encoded CSI bits (Q ^′ _CSI · Q _m ), and the number of modulation symbols for CSI (Q ^′ _CSI ) is shown. Here, Q _m indicates the number of encoded bits that can be transmitted around one modulation symbol. For example, Q _m is 1 when BPSK is applied, and Q _m is applied when QPSK is applied. _m is 2.

  In FIG. 7, the number of encoded A / N bits and the number of encoded CSI bits are determined using the number of A / N bits (before encoding). For example, if the number of A / N bits (before encoding) is 3 bits, the number of encoded A / N bits is 20 bits, and the number of encoded CSI bits is 28 bits. . When the number of A / N bits (before encoding) is 5 bits, the number of encoded A / N bits is 26 bits, and the number of encoded CSI bits is 22 bits. .

  Similarly, the number of modulation symbols for information indicating A / N and the number of modulation symbols for CSI are also determined using the number of A / N bits (before encoding). For example, when the number of A / N bits (before encoding) is 3 bits, the number of modulation symbols for information indicating A / N is 10, and the number of modulation symbols for CSI is 14. When the number of A / N bits (before encoding) is 5 bits, the number of modulation symbols for information indicating A / N is 13, and the number of modulation symbols for CSI is 11.

  Here, the base station apparatus sets the CSI reporting mode (CSI reporting mode) for each serving cell for the mobile station apparatus. Further, the CSI reporting type (CQI / PMI and RI reporting type) for each serving cell may be set for the mobile station apparatus. For example, the base station apparatus sets the report mode and / or report type for the mobile station apparatus using RRC signaling (may be dedicated signaling). Here, multiple report types are supported for one report mode.

  Furthermore, the number of CSI bits (before encoding) is determined using the reporting mode and / or reporting type. For example, the number of CSI bits (before encoding) is determined by the specification or the like depending on the report mode and / or report type.

  That is, for example, if the number of A / N bits (before encoding) is 3 bits, the CSI bits (before encoding) of the number of bits determined according to the report mode and / or report type are encoded. , 28 encoded bits (a bit sequence for the encoded CSI) are generated. When the number of A / N bits (before encoding) is 5 bits, CSI bits (before encoding) of the number of bits determined according to the report mode and / or report type are encoded, and 22 A coded bit of bits (a bit sequence for the coded CSI) is generated.

  Similarly, if the number of A / N bits (before encoding) is 3 bits, the CSI bits (before encoding) of the number of bits determined according to the report mode and / or report type are modulated. (For example, QPSK is applied) and 14 modulation symbols for CSI are generated. Also, if the number of A / N bits (before encoding) is 5 bits, the CSI bits (before encoding) of the number of bits determined according to the reporting mode and / or report type are modulated (eg, QPSK is applied) and 11 modulation symbols for CSI are generated.

  That is, in FIG. 7, for example, the mobile station apparatus uses 20-bit encoded A / N bits (information indicating 3-bit A / N before encoding) and 28-bit encoded CSI bits. Both transmit using a single PUCCH resource. In addition, for example, the mobile station apparatus uses both 26-bit encoded A / N bits (information indicating 5-bit A / N before encoding) and 28-bit encoded CSI bits. The PUCCH resource is used for transmission.

  Here, in the above description, as a format of PUCCH (PUCCH resource) used for transmission of information indicating A / N and CSI, a PUCCH format (maximum) capable of transmitting 48 encoded bits ( That is, a PUCCH format similar to PUCCH format 3) is assumed. However, it goes without saying that the same embodiment as this embodiment can be applied to any PUCCH format.

  Further, QPSK is assumed as a modulation scheme applicable to PUCCH resources (may be PUCCH format) used for transmission of information indicating A / N and CSI. However, it is a matter of course that the same form as this embodiment can be applied to any modulation system.

[Transmission of information indicating A / N and / or CSI]
As described above, the mobile station apparatus is configured such that when the information indicating A / N and the transmission of CSI occur in the same subframe, both the information indicating A / N and the CSI are It transmits to a base station apparatus using a PUCCH resource (For example, PUCCH resource in the PUCCH format similar to PUCCH format 3).

  In addition, the mobile station apparatus (when information indicating A / N and transmission of CSI and transmission of SR occur in the same subframe) includes both information indicating A / N and CSI and SR in a single It transmits to a base station apparatus using resources (for example, PUCCH resource in the PUCCH format similar to PUCCH format 3).

  Here, the information indicating A / N includes information indicating A / N corresponding to one or more serving cells (one or more downlink transport blocks transmitted in one or more serving cells). included. The CSI includes one or a plurality of serving cells (CSI corresponding to one or a plurality of downlink signals transmitted in the one or a plurality of serving cells. Further, the CSI includes a period by a mobile station apparatus. Transmitted CSI (also referred to as periodic CSI) may be included.

  For example, the mobile station apparatus uses information indicating A / N corresponding to the downlink transport block transmitted in each of the plurality of serving cells and CSI corresponding to the downlink signal transmitted in one serving cell as a single. Transmit using PUCCH resources.

  Here, the mobile station apparatus determines that the number of encoded CSI bits (hereinafter also referred to as the number of first CSI bits) is a predetermined value (hereinafter, the predetermined number of encoded bits, If it is less than the number of CSI bits), it is possible to transmit only information indicating A / N without transmitting CSI (CSI (CSI transmission) is dropped).

  That is, the mobile station apparatus describes the number of first encoded A / N bits (hereinafter referred to as the number of first A / N bits) according to the number of A / N bits (before encoding). And determining the number of first CSI bits. Further, the mobile station device compares the number of first CSI bits with the number of predetermined encoded bits, and if the number of first CSI bits is less than the number of predetermined encoded bits, Drop CSI. Then, the mobile station apparatus transmits only information indicating the A / N of the number of second encoded A / N bits (hereinafter also referred to as the number of second A / N bits).

  That is, a minimum value (the minimum number of encoded bits) is set as a predetermined value for CSI transmission (whether CSI is dropped). When the number of encoded CSI bits determined according to the number of A / N bits (before encoding) is less than the minimum value, the mobile station apparatus does not transmit CSI (drop CSI To do).

  Here, for example, the number of second A / N bits is the number of encoded bits that can be transmitted in PUCCH resources (may be PUCCH format) used for transmitting information indicating A / N and CSI (encoding). It is determined according to the maximum number of bits (for example, 48 bits).

  In the mobile station apparatus, the number of modulation symbols for CSI (hereinafter also referred to as the number of first CSI symbols) is a predetermined value (hereinafter, the number of predetermined modulation symbols, the number of second CSI symbols). If it is lower than the above, the CSI may be transmitted (CSI (CSI transmission) is dropped), and only the information indicating A / N may be transmitted.

  That is, the mobile station apparatus determines the number of first modulation symbols for information indicating A / N (hereinafter, the number of first A / N symbols) according to the number of A / N bits (before encoding). And the number of first CSI symbols. Also, the mobile station apparatus compares the number of first CSI symbols with the number of predetermined modulation symbols, and if the number of first CSI symbols is less than the number of predetermined modulation symbols, Drop it. Then, the mobile station apparatus transmits only information indicating A / N of the number of second modulation symbols (hereinafter also referred to as the number of second A / N symbols) for A / N bits.

  That is, a minimum value (the minimum number of modulation symbols) is set as a predetermined value for CSI transmission (whether or not CSI is dropped). The mobile station apparatus does not transmit CSI (drops CSI) when the number of modulation symbols determined according to the number of A / N bits (before encoding) is below the minimum value.

  Here, for example, the number of second A / N symbols is the number of modulation symbols that can be transmitted in information indicating A / N and PUCCH resources (may be PUCCH format) used for CSI transmission (modulation symbol number). The maximum number (for example, 24 symbols).

  Further, for example, a predetermined value (a predetermined number of encoded bits, a predetermined number of modulation symbols) is determined using the number of CSI bits (before encoding). Further, the predetermined value (the predetermined number of encoded bits, the predetermined number of modulation symbols) may be calculated using a calculation formula (1) as shown below.

  Also, for example, the predetermined value (the predetermined number of encoded bits) may be defined as the minimum number of encoded CSI bits necessary for decoding the CSI. Further, the predetermined value (the number of predetermined modulation symbols) may be defined as the minimum number of modulation symbols necessary for demodulating CSI.

FIG. 8 shows the number of CSI bits (before encoding) (O ^CSI ) and a predetermined value (the number of predetermined encoding bits: ^Q′CSI _min · Q _m , the number of predetermined modulation symbols: ^Q′CSI _min ) Is shown as an example. In FIG. 8, the predetermined number of coded bits is listed as the minimum number of coded CSI bits required to decode the CSI. The predetermined number of modulation symbols is described as the minimum number of modulation symbols necessary for demodulating CSI. Here, the number of bits indicated in parentheses as the minimum number of encoded CSI bits necessary for decoding CSI indicates a theoretical value.

  As shown in FIG. 8, for example, when the number of CSI bits (before encoding) is 3 bits, a predetermined value (the minimum number of encoded CSI bits necessary for decoding CSI) is Defined as 6 bits. When the number of CSI bits (before encoding) is 11 bits, a predetermined value (the minimum number of encoded CSI bits necessary for decoding CSI) is defined as 18 bits. .

  Similarly, for example, when the number of CSI bits (before encoding) is 3 bits, the predetermined value (the number of modulation symbols necessary for demodulating CSI) is defined as 3. When the number of CSI bits (before encoding) is 11 bits, the predetermined value (number of modulation symbols necessary for demodulating CSI) is defined as 9.

Furthermore, a predetermined value (a predetermined number of encoded bits, a predetermined number of modulation symbols) may be calculated by a calculation formula (1) as shown below. Here, in the calculation formula (1), if QPSK is applied _{Q m} is 2, and Q ^'CSI _min = ^{O CSI.}

As described above, the mobile station apparatus determines the number of first A / N bits (Q ^{′ ′} _{A / N} · Q) according to the number of A / N bits (before encoding) (O ^ACK ). _m ) and the number of first CSI bits (Q ^{′ ′} _CSI · Q _m ). Also, the mobile station apparatus compares the number of first CSI bits (Q ^{′ ′} _CSI · Q _m ) with a predetermined value ( ^Q′CSI _min · Q _m ), and the number of first CSI bits is predetermined. If the value is lower than the value of (i.e., Q ^″ _CSI · Q _m <Q ^{′ CSI} _min · Q _m ), the CSI is dropped. Then, the mobile station apparatus, the second A / N number of bits _{^{(i.e., Q 'A / N · Q}} m) to transmit only information indicating the A / N of the.

Also, the mobile station apparatus determines the number of first A / N symbols (Q ^″ _{A / N} ) and the first CSI symbol according to the number of A / N bits (O ^ACK ) (before encoding). The number (Q ^″ _CSI ). Further, the mobile station apparatus compares the number of first CSI symbols (Q ^″ _CSI ) with a predetermined value ( ^Q′CSI _min ), and the number of first CSI symbols is less than the predetermined value. In the case (ie, Q ^″ _CSI < ^Q′CSI _min ), the CSI is dropped. Then, the mobile station apparatus transmits only information indicating the A / N number of the second A / N symbols (ie, Q ^′ _{A / N} ).

  As described above, when the number of encoded CSI bits determined by the mobile station apparatus according to the number of A / N bits (before encoding) is below a predetermined value, By transmitting only information indicating A / N without transmitting CSI, the maximum number of encoded bits that can be transmitted in the PUCCH resource can be used for transmitting information indicating A / N. , Information indicating A / N can be transmitted with high reliability.

  Also, when the number of modulation symbols for CSI determined according to the number of A / N bits (before encoding) is lower than a predetermined value, the mobile station apparatus does not transmit CSI. By transmitting only the information indicating A / N, the maximum number of modulation symbols that can be transmitted in the PUCCH resource can be used for transmitting information indicating A / N. Therefore, it is possible to transmit with high reliability.

  In addition, the mobile station apparatus has a larger value (hereinafter, the number of third CSI bits) between the number of first CSI bits and a predetermined value (the number of predetermined encoded bits, the number of second CSI bits). Information indicating the encoded A / N and the encoded CSI of the number of the third CSI bits can be transmitted together.

  That is, the mobile station apparatus determines the number of first A / N bits and the number of first CSI bits according to the number of A / N bits (before encoding). In addition, the mobile station apparatus selects a larger value between the number of first CSI bits and the number of predetermined encoded bits as the number of third CSI bits. Further, the mobile station apparatus determines the number of third encoded A / N bits (hereinafter also referred to as the number of third A / N bits) according to the number of third CSI bits. To do. Then, the mobile station apparatus transmits both the information indicating the encoded A / N with the number of third A / N bits and the encoded CSI with the number of third CSI bits.

  That is, a minimum value (the minimum number of encoded bits) is set as a predetermined value for the CSI encoded bits transmitted together with information indicating A / N. If the number of encoded CSI bits determined according to the number of A / N bits (before encoding) is less than the minimum value, the mobile station apparatus determines the minimum number of encoded bits. Transmit the encoded CSI.

  Here, for example, the number of third A / N bits is the number of encoded bits that can be transmitted in PUCCH resources (may be PUCCH format) used to transmit information indicating A / N and CSI (encoding). Determined using the maximum number of bits (eg, 48 bits) and the number of third CSI bits. For example, the number of third A / N bits is a value obtained by subtracting the number of third CSI bits from the number of encoded bits that can be transmitted in the information indicating A / N and the PUCCH resource used for CSI transmission. It becomes.

  Further, the mobile station apparatus selects a larger value (hereinafter also referred to as the number of third CSI symbols) between the number of first CSI symbols and a predetermined value (the number of predetermined modulation symbols), Information indicating A / N and CSI of the number of third CSI symbols may be transmitted together.

  That is, the mobile station apparatus determines the number of first A / N symbols and the number of first CSI symbols according to the number of A / N bits (before encoding). In addition, the mobile station apparatus selects a larger value between the number of first CSI symbols and the number of predetermined modulation symbols as the number of third CSI symbols. Further, the mobile station apparatus determines the number of third modulation symbols for information indicating A / N (hereinafter also referred to as the number of third A / N symbols) according to the number of third CSI symbols. decide. Then, the mobile station apparatus transmits information indicating A / N of the number of third A / N symbols and CSI of the number of third CSI symbols.

  That is, a minimum value (the minimum number of modulation symbols) is set as a predetermined value for CSI modulation symbols transmitted together with information indicating A / N. When the number of modulation symbols determined according to the number of A / N bits (before encoding) is below the minimum value, the mobile station apparatus encodes the coded CSI with the minimum number of modulation symbols. Send.

  Here, for example, the number of third A / N symbols is the number of modulation symbols that can be transmitted in PUCCH resources (may be PUCCH format) used to transmit information indicating A / N and CSI (modulation symbol number). The maximum number (eg, 24 symbols) and the number of third CSI symbols. For example, the number of third A / N symbols includes information indicating A / N and a value obtained by subtracting the number of third CSI symbols from the number of modulation symbols that can be transmitted in the PUCCH resource used for CSI transmission. Become.

That is, the mobile station apparatus determines the first number of A / N bits (Q ^{′ ′} _{A / N} · Q _m ) and the first number according to the number of A / N bits (before encoding) (O ^ACK ). The number of CSI bits (Q ^″ _CSI · Q _m ) is determined. In addition, the mobile station apparatus sets a larger value between the number of first CSI bits (Q ^″ _CSI · Q _m ) and a predetermined value ( ^Q′CSI _min · Q _m ) to the number of third CSI bits. (Ie, Q ^′ _CSI · Q _m ). Further, the mobile station apparatus, according to the number of third CSI bits, determining a second A / N number of bits _{^{(i.e., Q 'A / N · Q}} m). Then, the mobile station apparatus transmits both the information indicating the encoded A / N of the number of the second A / N bits and the encoded CSI of the number of the third CSI bits.

The mobile station apparatus (before encoding) according to A / N number of bits ^{(O ACK),} the number of the first A / N symbol (Q ^'' _{A / N)} and the first CSI symbol _May be determined (Q ^″ _CSI ). The mobile station apparatus, a large value of the first number (Q _{^'' CSI)} to a predetermined value (Q ^'of CSI symbol ^CSI _min), the number of third CSI symbols (i.e., ^Q' _CSI ) To select. Further, the mobile station apparatus, according to the number of third CSI symbol, determining the number of the second A / N symbol (i.e., Q _{^'A / N)} a. Then, the mobile station apparatus transmits information indicating A / N of the number of second A / N symbols and CSI of the number of third CSI symbols together.

That is, the mobile station apparatus can calculate the number of third CSI bits (Q ^′ _CSI · Q _m ) according to the calculation formula (2) as shown below.

Further, the mobile station apparatus may calculate the number of third CSI symbols (Q ^′ _CSI ) according to the calculation formula (3) as shown below.

  As described above, the mobile station apparatus selects a larger value between the number of encoded CSI bits determined according to the number of A / N bits (before encoding) and a predetermined value. The information indicating the A / N and the CSI encoded with the selected value (number of encoded bits) are transmitted together to increase the reliability of the information indicating the A / N and the CSI. Can be transmitted. That is, for example, it is possible to secure a minimum number of encoded CSI bits necessary for decoding CSI, and to transmit information indicating A / N and CSI together.

  Also, the mobile station apparatus selects a larger value from the number of modulation symbols for CSI determined according to the number of A / N bits (before encoding) and a predetermined value, and performs a modulated A / N By transmitting both the information indicating A and the CSI modulated with the selected value (the number of modulation symbols), it is possible to transmit the information indicating A / N and the CSI with high reliability. That is, for example, it is possible to ensure a minimum number of modulation symbols for CSI necessary for demodulating CSI, and to transmit information indicating A / N and CSI together.

  The mobile station apparatus also describes a predetermined value (hereinafter, the predetermined number of A / N bits and the number of fourth A / N bits) according to the number of A / N bits (before encoding). ) Determine the number of encoded A / N bits below and the number of encoded CSI bits, information indicating the encoded A / N of encoded bits below a predetermined value, and encoding The transmitted CSI can be transmitted together.

  That is, a maximum value (the maximum number of encoded bits) is set as a predetermined value for the encoded bits of information indicating A / N transmitted together with CSI. That is, the mobile station apparatus determines the number of encoded A / N bits so as not to exceed the maximum number of encoded bits.

  Also, the mobile station apparatus describes a predetermined value (hereinafter, the predetermined number of A / N symbols and the number of fourth A / N symbols) according to the number of A / N bits (before encoding). ) Determine the number of modulation symbols for information indicating the following A / N, the number of modulation symbols for CSI, information indicating the modulated A / N of the number of modulation symbols equal to or less than a predetermined value, and the modulated CSI Can be sent together.

  That is, a maximum value (maximum number of modulation symbols) is set as a predetermined value for the modulation symbol of information indicating A / N transmitted together with CSI. That is, the mobile station apparatus determines the number of modulation symbols for information indicating A / N so as not to exceed the maximum number of modulation symbols.

  Here, for example, the predetermined value (the predetermined number of A / N bits) is the information indicating A / N and the encoded bits that can be transmitted in the PUCCH resource (may be PUCCH format) used for CSI transmission. It is determined using the number (maximum number of coded bits, eg 48 bits). The predetermined value (the number of predetermined A / N bits) is determined using the number of CSI bits (before encoding) that can be transmitted in the PUCCH resource (or PUCCH format) format. That is, the predetermined value (predetermined number of A / N bits) is determined using the number of CSI bits (before encoding). Also, the predetermined value (predetermined number of A / N bits) is determined using the minimum number of encoded CSI bits required to decode the CSI. Further, the predetermined value (the predetermined number of A / N bits) is determined using information indicating A / N and / or the size (encoding method) of the Reed-Muller encoder used for CSI encoding. The

  For example, a predetermined value (a predetermined number of A / N bits, for example, 30 bits) is a number of encoded bits that can be transmitted in PUCCH resources used for transmission of information indicating C / A and CSI (for example, 48 bits) minus the minimum number of encoded CSI bits required to decode the CSI (eg, 18 bits). Here, the minimum number of coded CSI bits (eg, 18 bits) required to decode CSI is the maximum number of CSI bits (eg, 11) that can be encoded by a single Reed-Muller encoder. Bit) is shown as the minimum number of encoded CSI bits required to decode the encoded bits (encoded CSI bits) obtained.

  Further, for example, the predetermined value (the predetermined number of A / N symbols) is the number of modulation symbols that can be transmitted in PUCCH resources (may be PUCCH format) used for transmitting information indicating A / N and CSI. The maximum number of modulation symbols, eg 24 symbols). Also, the predetermined value (the number of predetermined A / N symbols) is determined using the number of CSI bits (before encoding). The predetermined value (the predetermined number of A / N symbols) is determined using the minimum number of modulation symbols necessary for demodulating the CSI. Further, the predetermined value (the predetermined number of A / N symbols) is determined using information indicating A / N and / or the size (encoding scheme) of the Reed-Muller encoder used for CSI encoding. The

  For example, a predetermined value (a predetermined number of modulation symbols, for example, 15 symbols) is information indicating A / N and the number of modulation symbols that can be transmitted in a PUCCH resource used for transmission of CSI (for example, 24 symbols). Is obtained by subtracting the minimum number of modulation symbols (for example, 9 symbols) necessary for demodulating the CSI. Here, the minimum number of modulation symbols required for demodulating CSI (for example, 9 symbols) modulates the maximum number of CSI bits (for example, 11 bits) that can be encoded by a single Reed-Muller encoder. Is represented as the minimum number of modulation symbols required to demodulate the modulation symbols (modulation symbols for CSI) obtained.

FIG. 9 shows the number of A / N bits (before encoding) (O ^ACK ), the number of encoded A / N bits (Q ^′ _{A / N} · Q _m ), and information indicating A / N. An example of correspondence between the number of modulation symbols (Q ^′ _{A / N} ), the number of encoded CSI bits (Q ^′ _CSI · Q _m ), and the number of modulation symbols for CSI (Q ^′ _CSI ) is shown.

  That is, the mobile station apparatus determines the number of encoded A / N bits smaller than a predetermined value by performing the process shown in FIG. 9 instead of FIG. Further, the mobile station apparatus determines the number of modulation symbols smaller than a predetermined value by performing the processing as shown in FIG. 9 instead of FIG.

  As shown in FIG. 9, when the number of A / N bits (before encoding) is 3 bits, the number of encoded A / N bits is 20 bits, and the number of encoded CSI bits is 28 bits. When the number of A / N bits (before encoding) is 3 bits, the number of modulation symbols for information indicating A / N is 10, and the number of modulation symbols for CSI is 14.

  Here, when the number of A / N bits (before encoding) is 6 bits or more (in FIG. 9, as an example, the number of A / N bits (before encoding) may be 6 bits to 8 bits. The number of A / N bits encoded is 30 bits and the number of encoded CSI bits is 18 bits. When the number of A / N bits (before encoding) is 6 bits or more, the number of modulation symbols for information indicating A / N is 15, and the number of modulation symbols for CSI is 9.

  That is, in FIG. 9, the mobile station apparatus determines the number of encoded A / N bits so as not to exceed a predetermined value (a predetermined number of A / N bits, for example, 30 bits). That is, when the number of A / N bits (before encoding) is 6 bits or more, the mobile station apparatus always determines the number of encoded A / N bits as 30 bits.

  Here, for example, when the number of encoded A / N bits is 30 bits, the number of encoded CSI bits is 18 bits. That is, the number of encoded CSI bits is the number of encoded bits (the maximum number of encoded bits, for example, the number of encoded bits, for example, the PUCCH resource (may be PUCCH format) used to transmit information indicating A / N and CSI. 48 bits) minus the number of encoded A / N bits.

  That is, when the number of A / N bits (before encoding) is 6 bits or more, the CSI bits (before encoding) determined according to the report mode / report type are encoded, and 18-bit encoding is performed. Bits are generated. That is, in FIG. 9, when the number of A / N bits (before encoding) is 6 bits or more, the mobile station apparatus performs 30-bit encoded A / N bits and 18-bit encoding. Transmit the CSI bit.

  In addition, the mobile station apparatus determines the number of modulation symbols for information indicating A / N so as not to exceed a predetermined value (a predetermined number of A / N symbols, for example, 15 symbols). That is, when the number of A / N bits (before encoding) is 6 bits or more, the mobile station apparatus always determines the number of modulation symbols for information indicating A / N as 15 symbols.

  Here, for example, when the number of modulation symbols for information indicating A / N is 15 symbols, the number of modulation symbols for CSI is 9 symbols. That is, the number of modulation symbols for CSI is the number of modulation symbols (the maximum number of modulation symbols, for example, 24 symbols) that can be transmitted in information indicating A / N and PUCCH resources (may be PUCCH format) used for CSI transmission. Is a value obtained by subtracting the number of modulation symbols for information indicating A / N.

  That is, if the number of A / N bits (before encoding) is 6 bits or more, the CSI bits (before encoding) determined according to the report mode / report type are modulated, and 9 symbols of modulation symbols are obtained. Generated. That is, in FIG. 9, when the number of A / N bits (before encoding) is 6 bits or more, the mobile station apparatus performs 15 symbols of modulated A / N bits and 9 symbols of modulated CSI. Send a bit.

  As described above, the mobile station apparatus determines the number of encoded A / N bits so as not to exceed a predetermined value (for example, 30 bits), thereby indicating information indicating A / N. CSI can be transmitted with high reliability. That is, for example, it is possible to always ensure the minimum number of encoded CSI bits (for example, 18 bits) necessary for decoding CSI, and to transmit information indicating A / N and CSI together. Become.

  In addition, the mobile station apparatus determines the number of modulation symbols for the information indicating A / N so as not to exceed a predetermined value (15 symbols), thereby improving the reliability of the information indicating A / N and CSI. It becomes possible to transmit at a higher value. That is, for example, it is possible to always ensure the minimum number of modulation symbols (for example, 9 symbols) necessary for demodulating CSI, and to transmit information indicating A / N and CSI together.

[About interleaving]
As described above, for example, an encoded A / N bit (A / N bit sequence) and an encoded CSI bit (CSI bit sequence) are interleaved to form a 48-bit bit sequence. Is output. Also, for example, QPSK is applied to the output 48-bit bit sequence, and 24 modulation symbols are output. Further, the first 12 modulation symbols out of 24 modulation symbols are mapped to the resources of the first slot (first 0.5 ms) of 1 subframe (1 ms), and the remaining 12 modulation symbols are 1 subframe ( 1 ms) to the second slot (the remaining 0.5 ms). Here, the frequency of the resource in the first slot is different from the frequency of the resource in the second slot.

  Here, the mobile station apparatus can perform interleaving in units of two encoded bits after concatenating the A / N bit sequence and the CSI bit sequence. That is, the mobile station apparatus concatenates the A / N bit sequence and the CSI bit sequence, and interleaves the concatenated bit sequence in units of two encoded bits.

  Here, the number of encoded bits in which the mobile station apparatus performs interleaving is determined according to the applied modulation scheme. That is, when the applied modulation scheme is QPSK, interleaving is performed in units of 2 encoded bits, and when the applied modulation scheme is 16QAM, interleaving is performed in units of 4 encoded bits.

  FIG. 10 shows an interleaving method. In FIG. 10, for ease of explanation, as an example, 12 A / N bits (A / N bit sequence: <a0, a1, a2, a3, a4, a5, a6, a7, a8, a9 , A10, a11>) and 4 CSI bits (CSI bit sequence: <b0, b1, b2, b3>) are shown interleaved. Here, in FIG. 10, for ease of explanation, a state in which 12 A / N bits and 4 CSI bits are interleaved is described, but how many A / N bits and CSI bits are used. Of course, the same processing is performed. That is, for example, the mobile station apparatus can output a 48-bit bit sequence by performing the same processing as the interleaving shown in FIG.

  In FIG. 10, first, the mobile station apparatus has an A / N bit sequence: <a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11> and a CSI bit sequence: <b0 , B1, b2, b3> to generate the bit sequence <a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, b0, b1, b2, b3> To do. Further, the mobile station apparatus interleaves the generated bit sequence in units of two encoded bits, thereby generating a bit sequence <a0, a1, a4, a5, a8, a9, b0, b1, a2, a3, a6, a7, a10, a11, b2, b3> are generated. Then, the mobile station apparatus divides the generated bit sequence <a0, a1, a4, a5, a8, a9, b0, b1, a2, a3, a6, a7, a10, a11, b2, b3> into two. As a result, the bit sequence <a0, a1, a4, a5, a8, a9, b0, b1> and the bit sequence <a2, a3, a6, a7, a10, a11, b2, b3> are generated.

  As described above, for example, bit sequence <a0, a1, a4, a5, a8, a9, b0, b1> and bit sequence <a2, a3, a6, a7, a10, a11, b2, b3> respectively , QPSK is applied and mapped to the resource of each slot. That is, for example, the bit sequence <a0, a1, a4, a5, a8, a9, b0, b1> is assigned to the resource of the first slot, and the bit sequence <a2, a3, a6, a7, a10, a11, b2, b3 > Is mapped to the resource of the second slot.

  As described above, the mobile station apparatus concatenates the A / N bit sequence and the CSI bit sequence, and then interleaves them in units of two encoded bits to thereby obtain the A / N bit sequence and the CSI bit sequence. Can be mapped uniformly (uniformly) to the resources of the first slot and the resources of the second slot. Thereby, the information indicating A / N and CSI can obtain a diversity effect of time and frequency. This makes it possible to transmit information indicating A / N and CSI with high reliability.

  The embodiment described above is also applied to an integrated circuit mounted on a base station device and / or a mobile station device. Further, in the embodiment described above, each function in the base station device and a program for realizing each function in the mobile station device are recorded on a computer-readable recording medium and recorded on this recording medium. The base station apparatus and the mobile station apparatus may be controlled by causing the computer system to read and execute the program. Here, the “computer system” includes an OS and hardware such as peripheral devices.

  The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” dynamically holds a program for a short time, like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, it is also assumed that a server that holds a program for a certain time, such as a volatile memory inside a computer system that serves as a server or client. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the design and the like within the scope of the present invention are also within the scope of the claims. include.

100 base station apparatus 101 data control section 102 transmission data modulation section 103 radio section 104 scheduling section 105 channel estimation section 106 reception data demodulation section 107 data extraction section 108 upper layer 109 antenna 110 radio resource control section 200 mobile station apparatus 201 data control section 202 Transmission data modulation section 203 Radio section 204 Scheduling section 205 Channel estimation section 206 Reception data demodulation section 207 Data extraction section 208 Upper layer 209 Antenna 210 Radio resource control section

Claims (24)

A mobile station apparatus transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
The mobile station device
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
According to the determined number of bits of information indicating A / N, determine the number of bits of information indicating encoded A / N and the number of bits of encoded channel state information;
When the number of bits of the encoded channel state information is less than a predetermined value, the channel state information is dropped, and only the information indicating the A / N is used for the physical uplink control channel resource. To the base station device,
The base station device
Only the information indicating the A / N is received from the mobile station apparatus using the physical uplink control channel resource. The mobile communication system according to claim 1, wherein the predetermined value is determined according to the number of bits of channel state information before encoding. A mobile station apparatus transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
The mobile station device
According to the number of bits of information indicating the A / N, determine the first number of bits of the encoded channel state information,
Determining a second number of bits of the encoded channel state information according to the number of bits of the channel state information;
A larger value of the first number of bits and the second number of bits is selected as a third number of bits;
Transmitting the information indicating the encoded A / N and the encoded channel state information of the third number of bits to the base station apparatus using the physical uplink control channel resource;
The base station device
The information indicating the encoded A / N and the encoded channel state information of the third number of bits are received from the mobile station apparatus using the physical uplink control channel resource. Mobile communication system. A mobile station apparatus transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
The mobile station device
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
According to the determined number of bits of information indicating A / N, determine the number of bits of information indicating encoded A / N and the number of bits of encoded channel state information;
Transmitting the information indicating the A / N and the channel state information to the base station apparatus using the physical uplink control channel resource;
The base station device
Receiving the information indicating the A / N and the channel state information from the mobile station apparatus using the physical uplink control channel resource;
The number of bits of information indicating the encoded A / N is equal to or less than a predetermined value. The mobile communication system according to claim 4, wherein the predetermined value is determined according to the number of encoded bits that can be transmitted in a physical uplink channel format. The mobile communication system according to claim 4 or 5, wherein the predetermined value is determined according to the number of bits of channel state information before encoding that can be transmitted in a physical uplink channel format. The mobile communication system according to any one of claims 4 to 6, wherein the predetermined value is determined according to an encoding method used for encoding the information indicating the A / N. . A mobile station apparatus transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
The mobile station device
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
According to the determined number of bits of information indicating A / N, determine the number of bits of information indicating encoded A / N and the number of bits of encoded channel state information;
After concatenating the information indicating the encoded A / N of the determined number of bits and the encoded channel state information of the determined number of bits, interleaving in units of two encoded bits,
Transmitting the interleaved information indicating the A / N and the channel state information to the base station apparatus using the physical uplink control channel resource;
The base station device
The mobile communication system, wherein the interleaved information indicating the A / N and the channel state information are received from the mobile station apparatus using the physical uplink control channel resource. A base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
In accordance with the determined number of bits of information indicating A / N, the number of bits of information indicating A / N after encoding and the number of bits of channel state information after encoding are determined,
When the number of bits of the channel state information after the code is less than a predetermined value, only the information indicating the A / N is received from the mobile station apparatus using the physical uplink control channel resource. A base station apparatus characterized by the above. A base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource,
According to the number of bits of information indicating the A / N, determine the first number of bits of the channel state information after the code,
According to the number of bits of the channel state information, determine the second number of bits of the channel state information after encoding,
A larger value of the first number of bits and the second number of bits is selected as a third number of bits;
Receiving base station information indicating A / N after encoding and channel state information after encoding the third number of bits from the mobile station apparatus using the physical uplink control channel resource. Station equipment. A base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
In accordance with the determined number of bits of information indicating A / N, the number of bits of information indicating A / N after encoding and the number of bits of channel state information after encoding are determined,
Receiving the information indicating the A / N and the channel state information from the mobile station apparatus using the physical uplink control channel resource;
The number of bits of information indicating the A / N after the code is a predetermined value or less. A base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
According to the determined number of bits of information indicating A / N, determine the number of bits of information indicating encoded A / N and the number of bits of encoded channel state information;
After concatenating the information indicating the encoded A / N of the determined number of bits and the encoded channel state information of the determined number of bits, interleaving in units of two encoded bits,
The base station apparatus, wherein the interleaved information indicating the A / N and the channel state information are received from the mobile station apparatus using the physical uplink control channel resource. A mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
In accordance with the determined number of bits of information indicating A / N, the number of bits of information indicating A / N after encoding and the number of bits of channel state information after encoding are determined,
When the number of bits of the channel state information after the code is below a predetermined value, the channel state information is dropped and only the information indicating the A / N is used using the physical uplink control channel resource. A mobile station apparatus that transmits to the base station apparatus. A mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
According to the number of bits of information indicating the A / N, determine the first number of bits of the channel state information after the code,
According to the number of bits of the channel state information, determine the second number of bits of the channel state information after encoding,
A larger value of the first number of bits and the second number of bits is selected as a third number of bits;
Information indicating A / N after encoding and channel state information after encoding of the third number of bits are transmitted to the base station apparatus using the physical uplink control channel resource. Station equipment. A mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
In accordance with the determined number of bits of information indicating A / N, the number of bits of information indicating A / N after encoding and the number of bits of channel state information after encoding are determined,
Transmitting the information indicating the A / N and the channel state information to the base station apparatus using the physical uplink control channel resource;
The number of bits of information indicating A / N after the code is a predetermined value or less. A mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
According to the determined number of bits of information indicating A / N, determine the number of bits of information indicating encoded A / N and the number of bits of encoded channel state information;
After concatenating the information indicating the encoded A / N of the determined number of bits and the encoded channel state information of the determined number of bits, interleaving in units of two encoded bits,
The mobile station apparatus, wherein the interleaved information indicating the A / N and the channel state information are transmitted to the base station apparatus using the physical uplink control channel resource. A communication method of a base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
In accordance with the determined number of bits of information indicating A / N, the number of bits of information indicating A / N after encoding and the number of bits of channel state information after encoding are determined,
When the number of bits of the channel state information after the code is less than a predetermined value, only the information indicating the A / N is received from the mobile station apparatus using the physical uplink control channel resource. A communication method characterized by the above. A communication method of a base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource,
According to the number of bits of information indicating the A / N, determine the first number of bits of the channel state information after the code,
According to the number of bits of the channel state information, determine the second number of bits of the channel state information after encoding,
A larger value of the first number of bits and the second number of bits is selected as a third number of bits;
The information indicating the A / N after encoding and the channel state information after the encoding of the third number of bits are received from the mobile station apparatus using the physical uplink control channel resource. Method. A communication method of a base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
In accordance with the determined number of bits of information indicating A / N, the number of bits of information indicating A / N after encoding and the number of bits of channel state information after encoding are determined,
Receiving the information indicating the A / N and the channel state information from the mobile station apparatus using the physical uplink control channel resource;
The number of bits of information indicating the A / N after the sign is equal to or less than a predetermined value. A communication method of a base station apparatus that receives information indicating A / N and channel state information from a mobile station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
According to the determined number of bits of information indicating A / N, determine the number of bits of information indicating encoded A / N and the number of bits of encoded channel state information;
After concatenating the information indicating the encoded A / N of the determined number of bits and the encoded channel state information of the determined number of bits, interleaving in units of two encoded bits,
The interleaved information indicating the A / N and the channel state information are received from the mobile station apparatus using the physical uplink control channel resource. A communication method of a mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
In accordance with the determined number of bits of information indicating A / N, the number of bits of information indicating A / N after encoding and the number of bits of channel state information after encoding are determined,
When the number of bits of the channel state information after the code is below a predetermined value, the channel state information is dropped and only the information indicating the A / N is used using the physical uplink control channel resource. Transmission to the base station apparatus. A communication method of a mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
According to the number of bits of information indicating the A / N, determine the first number of bits of the channel state information after the code,
According to the number of bits of the channel state information, determine the second number of bits of the channel state information after encoding,
A larger value of the first number of bits and the second number of bits is selected as a third number of bits;
Information indicating A / N after encoding and channel state information after encoding of the third number of bits are transmitted to the base station apparatus using the physical uplink control channel resource. Method. A communication method of a mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
In accordance with the determined number of bits of information indicating A / N, the number of bits of information indicating A / N after encoding and the number of bits of channel state information after encoding are determined,
Transmitting the information indicating the A / N and the channel state information to the base station apparatus using the physical uplink control channel resource;
The number of bits of information indicating the A / N after the sign is equal to or less than a predetermined value. A communication method of a mobile station apparatus that transmits information indicating A / N and channel state information to a base station apparatus using a single physical uplink control channel resource,
According to the number of serving cells and the downlink transmission mode in the serving cell, determine the number of bits of information indicating the A / N,
According to the determined number of bits of information indicating A / N, determine the number of bits of information indicating encoded A / N and the number of bits of encoded channel state information;
After concatenating the information indicating the encoded A / N of the determined number of bits and the encoded channel state information of the determined number of bits, interleaving in units of two encoded bits,
The interleaved information indicating the A / N and the channel state information are transmitted to the base station apparatus using the physical uplink control channel resource.