JP2015222993A - Mobile station device, base station device, radio communication system, radio communication method and integrated circuit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform efficient communication of one or a plurality of sets of channel status information between a mobile station device and a base station device, using a single physical uplink channel.SOLUTION: When a plurality of reports of channel status information related to different cells are in collision (Yes in step S2408), a mobile station device 1 selects two reports of the channel status information on the basis of the priority level of the report type and the cell index of a cell, to drop the report of channel status information of other channels (step S2412). The mobile station device 1 then transmits the selected two reports of the channel status information, using the resource of a PUCCH format 3 to be used when there is a collision of a plurality of channel status information reports related to different cells (step S2414).

Description

  The present invention relates to a mobile station device, a base station device, a wireless communication system, a wireless communication method, and an integrated circuit.

The evolution of wireless access methods and wireless networks for cellular mobile communications (hereinafter referred to as “Long Term Evolution (LTE)” or “Evolved Universal Terrestrial Radio Access: EUTRA”) is the third generation partnership project (3rd Generation Partnership). Project: 3GPP). In LTE, an orthogonal frequency division multiplexing (OFDM) scheme is used as a downlink communication scheme from a base station apparatus to a mobile station apparatus. In addition, as an uplink communication method from the mobile station device to the base station device, an 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). LTE is a cellular communication system in which a plurality of areas covered by a base station apparatus are arranged in a cell shape.

In LTE, the mobile station apparatus calculates channel state information based on the downlink reference signal received from the base station apparatus. The mobile station apparatus uses a physical uplink control channel (Physical
Channel state information is transmitted to the base station apparatus using an uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

In LTE, a base station apparatus performs scheduling of a physical downlink shared channel (PDSCH) based on channel state information received from a mobile station apparatus. Further, the base station apparatus transmits information indicating the scheduling result to the mobile station apparatus using a physical downlink control channel (PUCCH). The mobile station apparatus performs PDSCH reception processing based on the received information indicating the scheduling result.

In LTE, a technique (cell aggregation: also called carrier aggregation) in which a mobile station apparatus and a base station apparatus communicate using a plurality of cells (component carriers) having the same channel structure is used. It is done. For example, in communication using cell aggregation, a mobile station apparatus and a base station apparatus can simultaneously transmit and receive a plurality of physical channels using a plurality of cells. For example, after the mobile station apparatus and the base station apparatus establish initial connection in one cell, a cell used by the base station apparatus for communication with the mobile station apparatus can be added.

In LTE, a base station apparatus can set periodic reports of channel state information of a plurality of cells in a mobile station apparatus. The base station apparatus transmits information indicating the setting of periodic reports of channel state information of a plurality of cells to the mobile station apparatus. The mobile station apparatus sets periodic reports of channel state information of a plurality of cells based on information indicating setting of periodic reports of channel state information of a plurality of cells. A mobile station apparatus that is set to periodically report channel state information of a plurality of cells periodically transmits channel state information corresponding to each of the plurality of cells using PUCCH. When a periodic transmission of a plurality of channel state information collides in a certain subframe, the mobile station device transmits one channel state information to the base station device and drops (does not transmit) other channel state information. . Therefore, the base station apparatus cannot perform PDSCH scheduling based on the channel state information in a cell corresponding to the channel state information dropped by the mobile station apparatus, and cannot perform PDSCH scheduling efficiently. is there.

  In 3GPP, it is considered to transmit a plurality of channel state information using a new format of PUCCH or PUSCH.

"Design and evaluation for CSI signaling enhancement", R1-113630, 3GPP TSG-RAN WG1 Meeting # 67, San Francisco, USA, 14th-18th November 2011.

  However, if the mobile station apparatus always occupies PUCCH and PUSCH resources that can transmit a plurality of channel state information, there is a problem that the efficiency of resource allocation is reduced.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a mobile station apparatus capable of efficiently communicating one or a plurality of channel state information using a single physical uplink channel, It is an object of the present invention to provide a base station apparatus, a wireless communication system, a wireless communication method, and an integrated circuit.

  (1) In order to achieve the above object, the present invention takes the following measures. That is, the mobile station apparatus of the present invention is a mobile station apparatus that communicates with a base station apparatus using a plurality of cells, and one mobile station apparatus is provided for each of the plurality of cells according to information received from the base station apparatus. A resource of a physical uplink control channel in a first format that can be used for reporting channel state information is set. Also, the mobile station apparatus of the present invention provides, for each of the plurality of cells, the channel state information using the physical uplink control channel resource of the first format according to the information received from the base station apparatus. Set up periodic reporting. Also, the mobile station apparatus of the present invention sets one physical uplink control channel resource of the second format that can be used for reporting the plurality of channel state information according to the information received from the base station apparatus To do. Or, in a certain subframe, the mobile station apparatus of the present invention, when the reports of the plurality of channel state information using the physical uplink control channel of the first format collide, Using a resource of a physical uplink control channel, a part or all of the plurality of colliding channel state information reports are transmitted to the base station apparatus.

(2) The base station apparatus of the present invention is a base station apparatus that communicates with a mobile station apparatus using a plurality of cells, and is used for reporting one channel state information for each of the plurality of cells. The resource of the physical uplink control channel of the first format that can be set is configured. In addition, the base station apparatus of the present invention sets periodic reporting of the channel state information using the physical uplink control channel of the set first format for each of the plurality of cells. Also, the base station apparatus of the present invention sets one resource of the physical uplink control channel in the second format that can be used for reporting a plurality of the channel state information. In addition, the base station apparatus of the present invention, when a plurality of reports of the channel state information using the physical uplink control channel of the first format collide in a certain subframe, Using the resources of the physical uplink control channel, a part or all of the conflicting channel state information is received from the mobile station apparatus.

  (3) Moreover, the radio | wireless communications system of this invention is a radio | wireless communications system with which a mobile station apparatus and a base station apparatus communicate using a some cell, Comprising: The said base station apparatus is each with respect to the said some cell. Thus, resources of the physical uplink control channel in the first format that can be used for reporting one channel state information are set. Further, the base station apparatus sets periodic reporting of the channel state information using the physical uplink control channel of the set first format for each of the plurality of cells. In addition, the base station apparatus sets one physical uplink control channel resource in the second format that can be used for reporting the plurality of channel state information. Further, the mobile station apparatus, when a report of the plurality of channel state information using the physical uplink control channel of the first format collides in a certain subframe, the physical uplink of the second format A part or all of the reports of the plurality of conflicting channel state information are transmitted to the base station apparatus using the resource of the link control channel.

  (4) In addition, the wireless communication method of the present invention is a wireless communication method used for a mobile station device that communicates with a base station device using a plurality of cells, and the plurality of the wireless communication methods according to information received from the base station device. For each cell, a physical uplink control channel resource of the first format that can be used for reporting one channel state information is set. Further, the radio communication method of the present invention provides the channel state information using the physical uplink control channel resource of the first format for each of the plurality of cells according to the information received from the base station apparatus. Set up periodic reporting. Also, the radio communication method of the present invention sets one resource of a physical uplink control channel in the second format that can be used for reporting a plurality of the channel state information according to the information received from the base station apparatus. To do. In addition, in the wireless communication method of the present invention, when a plurality of channel state information reports using the physical uplink control channel of the first format collide in a certain subframe, the wireless communication method of the second format A part or all of the collided channel state information is transmitted to the base station apparatus using physical uplink control channel resources.

  (5) In addition, the wireless communication method of the present invention is a wireless communication method used for a base station apparatus that communicates with a mobile station apparatus using a plurality of cells, and each of the plurality of cells has one channel. A resource of the physical uplink control channel of the first format that can be used for reporting the state information is set. In the wireless communication method of the present invention, periodic reporting of the channel state information using the physical uplink control channel of the set first format is set for each of the plurality of cells. Also, the radio communication method of the present invention sets one physical uplink control channel resource in the second format that can be used for reporting a plurality of the channel state information. In addition, in the wireless communication method of the present invention, when a plurality of reports of the channel state information using the physical uplink control channel of the first format collide in a certain subframe, the wireless communication method of the second format Using the resources of the physical uplink control channel, a part or all of the conflicting channel state information is received from the mobile station apparatus.

(6) Moreover, the integrated circuit of the present invention is an integrated circuit used in a mobile station apparatus that communicates with a base station apparatus using a plurality of cells, and the plurality of cells according to information received from the base station apparatus For each, resources of the physical uplink control channel in the first format that can be used for reporting one channel state information are set. Further, the integrated circuit of the present invention provides the period of the channel state information using the physical uplink control channel resource of the first format for each of the plurality of cells according to the information received from the base station apparatus. Set up a general report. Also, the integrated circuit of the present invention sets one physical uplink control channel resource of the second format that can be used for reporting the plurality of channel state information according to the information received from the base station apparatus. . The integrated circuit according to the present invention may be configured such that, in a certain subframe, when the reports of the plurality of channel state information using the physical uplink control channel of the first format collide, A part or all of the plurality of colliding channel state information reports are transmitted to the base station apparatus using uplink control channel resources.

  (7) Moreover, the integrated circuit of the present invention is an integrated circuit used in a base station apparatus that communicates with a mobile station apparatus using a plurality of cells, and includes one channel state information for each of the plurality of cells. The resources of the physical uplink control channel of the first format that can be used for the reporting of the first format are set. In addition, the integrated circuit of the present invention sets periodic reporting of the channel state information using the physical uplink control channel of the set first format for each of the plurality of cells. The integrated circuit of the present invention sets one physical uplink control channel resource of the second format that can be used for reporting a plurality of the channel state information. In addition, the integrated circuit of the present invention may be configured such that when a plurality of reports of the channel state information using the physical uplink control channel of the first format collide in a certain subframe, the physical of the second format The mobile station apparatus receives part or all of the plurality of colliding channel state information reports using the uplink control channel resource.

  (8) Moreover, the mobile station apparatus of this invention is a mobile station apparatus which communicates with a base station apparatus using a some cell, Comprising: According to the information received from the said base station apparatus, with respect to each of the said some cell Physical uplink control channel resource in the first format that can be used for reporting one channel state information or physical uplink control in the second format that can be used for reporting a plurality of the channel state information Set one of the channel's resources. In addition, the mobile station apparatus of the present invention periodically transmits the channel state information using the physical uplink control channel of the first format for each of the plurality of cells according to the information received from the base station apparatus. Or a periodic report of the channel state information using the physical uplink control channel of the second format. In addition, the mobile station apparatus of the present invention, in a certain subframe, reports one or a plurality of the channel state information using the physical uplink control channel of the first format and the physical uplink of the second format. If there is a collision with one or more reports of the channel state information using a link control channel, the resources of the physical uplink control channel of the second format are used, and the plurality of channels that are in collision A part or all of the status information report is transmitted to the base station apparatus.

  (9) The base station apparatus of the present invention is a base station apparatus that communicates with a mobile station apparatus using a plurality of cells, and is used for reporting one channel state information for each of the plurality of cells. Either a physical uplink control channel resource in a first format that can be used or a physical uplink control channel resource in a second format that can be used for reporting a plurality of the channel state information is set. Further, the base station apparatus of the present invention is configured to periodically report the channel state information using the physical uplink control channel of the first format or the second format for each of the plurality of cells. The periodic report of the channel state information using the physical uplink control channel is set. Further, the base station apparatus of the present invention, in a certain subframe, reports one or a plurality of the channel state information using the physical uplink control channel of the first format, and the physical uplink of the second format. If there is a collision with one or more reports of the channel state information using a link control channel, the resources of the physical uplink control channel of the second format are used, and the plurality of channels that are in collision A part or all of the status information report is received from the mobile station apparatus.

  (10) The radio communication system of the present invention is a radio communication system in which a mobile station apparatus and a base station apparatus communicate with each other using a plurality of cells, and the base station apparatus Thus, a physical uplink control channel resource in a first format that can be used for reporting one channel state information or a physical uplink in a second format that can be used for reporting a plurality of the channel state information Set one of the control channel resources. Further, the base station apparatus periodically reports the channel state information using the physical uplink control channel of the first format or the physical of the second format for each of the plurality of cells. Periodic reporting of the channel state information using an uplink control channel is set. In addition, the mobile station apparatus reports one or more reports of the channel state information using the physical uplink control channel of the first format and the physical uplink control channel of the second format in a certain subframe. If there is a collision with one or more reports of the channel state information using a single physical uplink control channel resource of the second format, the conflicting channels A part or all of the status information report is transmitted to the base station apparatus.

  (11) Further, the wireless communication method of the present invention is a wireless communication method used for a mobile station device that communicates with a base station device using a plurality of cells, and the plurality of the wireless communication methods according to information received from the base station device. For each cell, a physical uplink control channel resource of the first format that can be used for reporting one channel state information or a second that can be used for reporting a plurality of the channel state information One of the physical uplink control channel resources in the format is set. Further, the radio communication method of the present invention is configured to periodically transmit the channel state information using the physical uplink control channel of the first format for each of the plurality of cells according to the information received from the base station apparatus. Or a periodic report of the channel state information using the physical uplink control channel of the second format. In addition, the radio communication method of the present invention provides, in a certain subframe, one or more reports of the channel state information using the physical uplink control channel of the first format and the physical uplink of the second format. If there is a collision with one or more reports of the channel state information using a link control channel, the resources of the physical uplink control channel of the second format are used, and the plurality of channels that are in collision A part or all of the status information report is transmitted to the base station apparatus.

  (12) Moreover, the radio communication method of the present invention is a radio communication method used for a base station apparatus that communicates with a mobile station apparatus using a plurality of cells, and includes one channel for each of the plurality of cells. A resource of a physical uplink control channel in a first format that can be used for reporting state information or a resource of a physical uplink control channel in a second format that can be used for reporting a plurality of the channel state information Set one of them. In addition, the wireless communication method of the present invention is configured to periodically report the channel state information using the physical uplink control channel of the first format or the second format for each of the plurality of cells. The periodic report of the channel state information using the physical uplink control channel is set. In addition, the radio communication method of the present invention provides, in a certain subframe, one or more reports of the channel state information using the physical uplink control channel of the first format and the physical uplink of the second format. If there is a collision with one or more reports of the channel state information using a link control channel, the resources of the physical uplink control channel of the second format are used, and the plurality of channels that are in collision A part or all of the status information report is received from the mobile station apparatus.

(13) Further, the integrated circuit of the present invention is an integrated circuit used in a mobile station apparatus that communicates with a base station apparatus using a plurality of cells, and the plurality of cells according to information received from the base station apparatus For each, a physical uplink control channel resource in a first format that can be used for reporting one channel state information or a second format that can be used for reporting a plurality of the channel state information One of the resources of the physical uplink control channel is set. Further, the integrated circuit of the present invention is configured to periodically transmit the channel state information using the physical uplink control channel of the first format for each of the plurality of cells according to the information received from the base station apparatus. Report or periodic report of the channel state information using the physical uplink control channel of the second format is set. Also, the integrated circuit of the present invention provides a report of one or more channel state information using the physical uplink control channel of the first format and a physical uplink of the second format in a certain subframe. If there is a collision with one or more reports of the channel state information using a control channel, the resource state of the physical uplink control channel in the second format is used, and the plurality of channel states that are in conflict A part or all of the information report is transmitted to the base station apparatus.

  (14) An integrated circuit according to the present invention is an integrated circuit used in a base station apparatus that communicates with a mobile station apparatus using a plurality of cells, and includes one channel state information for each of the plurality of cells. Either a physical uplink control channel resource in a first format that can be used for reporting a plurality of physical uplink control channel resources in a second format that can be used for reporting a plurality of the channel state information Set. In addition, the integrated circuit of the present invention is configured to periodically report the channel state information using the physical uplink control channel of the first format for each of the plurality of cells, or of the second format. Periodic reporting of the channel state information using a physical uplink control channel is set. Also, the integrated circuit of the present invention provides a report of one or more channel state information using the physical uplink control channel of the first format and a physical uplink of the second format in a certain subframe. If there is a collision with one or more reports of the channel state information using a control channel, the resource state of the physical uplink control channel in the second format is used, and the plurality of channel states that are in conflict A part or all of the information report is received from the mobile station apparatus.

  According to the present invention, the mobile station apparatus and the base station apparatus can efficiently communicate one or a plurality of channel state information using a single physical uplink channel.

It is a conceptual diagram of the radio | wireless communications system of this embodiment. It is a figure which shows an example of the cell aggregation of this embodiment. It is a figure which shows schematic structure of the radio | wireless frame of the downlink component carrier of this embodiment. It is a figure which shows an example of the mapping of the downlink reference signal of this embodiment. It is a figure which shows an example of the mapping of the physical downlink channel in the downlink component carrier of this embodiment. It is a figure which shows schematic structure of the radio | wireless frame of the uplink component carrier of this embodiment. It is a figure which shows an example of the mapping of the physical uplink channel in the uplink component carrier of this embodiment. It is a schematic block diagram which shows the structure of the mobile station apparatus 1 of this embodiment. It is a schematic block diagram which shows the structure of the base station apparatus 3 of this embodiment. It is a figure which shows an example of encoding and modulation of the channel state information transmitted using PUCCH format 2 of this embodiment. It is a figure which shows an example of sequence Mi _{, n} used for the encoding of the channel state information transmitted with PUCCH format 2 of this embodiment. It is a figure which shows an example of a structure of the 1st slot of PUCCH format 2 of this embodiment. It is a figure which shows an example of a structure of the 2nd slot of PUCCH format 2 of this embodiment. It is a figure which shows an example of the base sequence of this embodiment. It is a figure which shows an example of the encoding and modulation of channel state information transmitted using PUCCH format 3 of this embodiment. It is a figure which shows an example of sequence Mi _{, n} used for the encoding of the channel state information transmitted with the PUCCH format 3 of this embodiment. It is a figure which shows an example of a structure of the 1st slot of PUCCH format 3 of this embodiment. It is a figure which shows an example of a structure of the 2nd slot of PUCCH format 3 of this embodiment. It is a figure which shows an example of the setting of the periodic channel state information corresponding to each of the cell 0 to the cell 3 of this embodiment. It is a figure which shows an example of the timing of the report of the channel state information of this embodiment. It is a figure which shows the 1st example of a response | compatibility of the report of the channel state information of this embodiment, and the resource of a physical uplink control channel. It is a figure which shows the 2nd example of a response | compatibility of the report of the channel state information of this embodiment, and the resource of a physical uplink control channel. It is a figure which shows the 3rd example of a response | compatibility of the report of the channel state information of this embodiment, and the resource of a physical uplink control channel. It is a flowchart figure which shows the process for determining the resource used for the report of the channel state information of this embodiment. It is a figure which shows an example of the encoding of the single channel state information transmitted using PUCCH format 3 of 2nd Embodiment, and a modulation | alteration. It is a figure which shows an example of the setting of the periodic channel state information corresponding to each of the cell 0 of the 2nd Embodiment, and the cell 3. FIG. It is a figure which shows the 1st example of a response | compatibility of the report of the channel state information of 2nd Embodiment, and the resource of a physical uplink control channel. It is a figure which shows the 2nd example of a response | compatibility of the report of the channel state information of 2nd Embodiment, and the resource of a physical uplink control channel. It is a figure which shows the 3rd example of a response | compatibility of the report of the channel state information of 2nd Embodiment, and the resource of a physical uplink control channel.

  First, the physical channel of this embodiment will be described.

FIG. 1 is a conceptual diagram of the wireless communication system of the present embodiment. In FIG. 1, the radio communication system includes mobile station apparatuses 1 </ b> A to 1 </ b> C and a base station apparatus 3. In FIG. 1, in downlink radio communication from the base station apparatus 3 to the mobile station apparatuses 1A to 1C, a synchronization signal (Synchronization signal: SS), a downlink reference signal (Downlink Reference Signal: DL RS), a physical broadcast channel ( Physical Broadcast Channel (PBCH), physical downlink control channel (Physical
Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Physical Multicast Channel (PMCH), Physical Control Format Indicator Channel (PCFICH), and Physical HARQ Indicator Indicates that a channel (Physical Hybrid ARQ Indicator Channel: PHICH) is used.

FIG. 1 illustrates uplink reference signals (UL RS), physical uplink control channels (Physical Uplink Control Channels) in uplink wireless communication from the mobile station apparatuses 1A to 1C to the base station apparatus 3. PUCCH), a physical uplink shared channel (PUSCH), and a physical random access channel (PRACH). Hereinafter, the mobile station apparatuses 1A to 1C are referred to as the mobile station apparatus 1.

The synchronization signal is used for the mobile station apparatus 1 to synchronize the downlink frequency domain and time domain. The downlink reference signal is used for the mobile station apparatus 1 to synchronize the downlink frequency domain and time domain. The downlink reference signal is used by the mobile station apparatus 1 to calculate downlink channel state information. Further, the downlink reference signal is used for the mobile station apparatus 1 to perform propagation channel correction of PDSCH and PDCCH. The PBCH is a physical channel used for broadcasting system information (master information block, broadcast channel: BCH) commonly used in the mobile station apparatus 1. PBCH is transmitted at intervals of 40 ms. The mobile station apparatus 1 performs blind detection at 40 ms intervals. The PBCH is retransmitted at 10 ms intervals.

The PDCCH is used to transmit downlink control information (Downlink Control Information: DCI) such as downlink assignment (also referred to as “downlink assignment” or “downlink grant”) and uplink grant. It is a physical channel. The downlink assignment is downlink control information used for scheduling a single PDSCH in a single cell. The downlink assignment is information regarding the modulation scheme and coding rate for the PDSCH (Modulation and Coding Scheme: MCS).
), Information indicating radio resource allocation, a TPC command (Transmission Power Control command) for the PUCCH, and the like. The uplink grant is downlink control information used for scheduling a single PUSCH in a single cell. The uplink grant includes information on a modulation scheme and coding rate for PUSCH, information indicating radio resource allocation, a TPC command for PUSCH, and the like.

The PDSCH is a physical channel used for transmitting paging information (Paging Channel: PCH), system information, and downlink data (Downlink Shared Channel: DL-SCH). System information transmitted on the PDSCH is referred to as a system information block. Further, the system information block includes radio resource setting information that is common to the plurality of mobile station apparatuses 1. The PMCH is a physical channel used for transmitting information (Multicast Channel: MCH) related to MBMS (Multimedia Broadcast and Multicast Service). PCFICH is a physical channel used for transmitting information indicating a region (OFDM symbol) where a PDCCH is arranged.

The PHICH is a physical channel used for transmitting a HARQ indicator (response information) indicating success or failure of decoding of the uplink data received by the base station apparatus 3. When the base station apparatus 3 succeeds in decoding the uplink data included in the PUSCH, ACK (ACKnowledgement) is set in the HARQ indicator for the uplink data. When the base station apparatus 3 fails to decode the uplink data included in the PUSCH, NACK (Negative ACKnowledgement) is set in the HARQ indicator for the uplink data. A single PHICH transmits a HARQ indicator for a single uplink data. The base station apparatus 3 transmits HARQ indicators for a plurality of uplink data included in the same PUSCH using a plurality of PHICHs.

The uplink reference signal is used for the base station apparatus 3 to synchronize the uplink time domain. The uplink reference signal is used by the base station apparatus 3 to measure uplink reception quality. Further, the uplink reference signal is used for the base station apparatus 3 to perform PUSCH or PUCCH propagation path correction. Uplink reference signals include DMRS (Demodulation Reference Signal) that is time-multiplexed with PUSCH or PUCCH and SRS (Sounding Reference Signal) that is transmitted regardless of PUSCH and PUCCH.

PUCCH indicates downlink channel state information (CSI), scheduling request (SR) indicating a request for radio resources of PUSCH, and success or failure of decoding of downlink data received by mobile station apparatus 1. This is a physical channel used for transmitting uplink control information (UCI), which is information used for communication control, such as ACK / NACK. The channel state information includes a channel quality indicator (Channel Quality Indicator: CQI), a precoding matrix indicator (Precoding Matrix Indicator: PMI, also described as information indicating a precoder), and a precoding type indicator (Precoding Type Indicator: PTI).
, And / or rank indicator (RI).

  PUCCH supports multiple formats. A format supported by PUCCH is referred to as a PUCCH format.

(A) For example, in PUCCH format 1, on-off-keying is applied as a modulation method. The mobile station apparatus 1 can transmit a scheduling request using the PUCCH format 1.
(B) For example, PUCCH format 1a uses BPSK (Binary Phase) as a modulation method.
Shift Keying) is applied. The mobile station apparatus 1 can transmit 1-bit ACK / NACK using the PUCCH format 1a.
(C) For example, QPSK (Quadrature Phase Shift Keying) is applied to the PUCCH format 1b as a modulation method. The mobile station apparatus 1 can transmit 2-bit ACK / NACK using the PUCCH format 1b.
(D) For example, in PUCCH format 2, QPSK is applied as a modulation method. Using the PUCCH format 2, the mobile station apparatus 1 can transmit channel state information up to 11 bits corresponding to a single cell. In PUCCH format 2, convolutional coding is applied as a coding method. A 20-bit encoded bit sequence is generated by the convolutional encoding.
(E) For example, in PUCCH format 3, QPSK is applied as a modulation scheme. Using the PUCCH format 3, the mobile station device 1 can transmit up to a predetermined number of channel state information and / or a plurality of ACK / NACKs corresponding to a predetermined number of cells. In PUCCH format 3, block coding is applied as a coding method. A 48-bit coded bit sequence is generated by the block coding. When transmitting only channel state information using PUCCH format 3, channel state information up to 22 bits can be transmitted. When only ACK / NACK is transmitted using PUCCH format 3, it is possible to transmit ACK / NACK up to 22 bits.

The PUSCH is a physical channel used to transmit uplink data (Uplink Shared Channel: UL-SCH) and uplink control information (ACK / NACK and / or channel state information). PRACH is a physical channel used for transmitting a random access preamble. The PRACH is mainly intended for the mobile station apparatus 1 to synchronize with the base station apparatus 3 in the time domain. Besides, an initial connection establishment procedure, a handover procedure, a connection re-establishment (connection re-establishment) ) Procedure, synchronization for uplink transmission (timing adjustment), and uplink radio resource allocation request.

BCH, UL-SCH, DL-SCH and the like are transport channels. A unit for transmitting UL-SCH by PUSCH and a unit for transmitting DL-SCH by PDSCH are called transport blocks (TB). The transport block is a unit of data delivered from the MAC (Media Access Control) layer to the physical layer, and HARQ (retransmission) control is performed for each transport block in the MAC layer. A unit of data handled in the MAC layer such as UL-SCH and DL-SCH is also referred to as a MAC PDU (Protocol Data Unit). In the physical layer, the transport block is mapped to a code word, and an encoding process is performed for each code word.

  Hereinafter, cell aggregation (carrier aggregation) of this embodiment will be described.

FIG. 2 is a diagram illustrating an example of cell aggregation according to the present embodiment. In FIG. 2, the horizontal axis is the frequency domain. In cell aggregation, a plurality of serving cells are aggregated. Hereinafter, the serving cell is simply referred to as a cell. In FIG. 2, four cells (cell 0, cell 1, cell 2, and cell 3) are aggregated. One cell (cell 0 in FIG. 2) among the plurality of cells to be aggregated is a primary cell (Pcell). The primary cell is a cell in which the mobile station device 1 has performed an initial connection establishment procedure, a cell in which the mobile station device 1 has started a connection re-establishment procedure, or a primary cell during a handover procedure. It is a cell designated as a cell.

The cells excluding the primary cell (cell 1, cell 2 and cell 3 in FIG. 2) are secondary cells (secondary cells: Scell). Secondary cells are used to provide additional radio resources. The secondary cell is mainly used for transmission / reception of PDSCH, PUSCH, and PRACH. The secondary cell operates on a frequency different from that of the primary cell, and is added by the base station device 3 after the connection between the mobile station device 1 and the base station device 3 is established. The secondary cell is notified from the base station apparatus 3 to the mobile station apparatus 1 during the handover procedure. The mobile station apparatus 1 transmits PUCCH only in the primary cell, and does not transmit PUCCH in the secondary cell. The mobile station device 1 does not have to receive paging and system information transmitted on the PBCH and PDSCH of the secondary cell.

  The cell index of the primary cell is 0. The cell index of the secondary cell is any one of 1 to 7. Moreover, the base station apparatus 3 transmits the information which shows the cell index of a secondary cell to the mobile station apparatus 1 when adding a secondary cell.

In FIG. 2, the square hatched with dots is the downlink component carrier (DL CC), and the square hatched with diagonal lines from the lower left to the upper right is the uplink component carrier (UL CC). It is. The carrier corresponding to the cell in the downlink is a downlink component carrier, and the carrier corresponding to the cell in the uplink is an uplink component carrier. The carrier corresponding to the primary cell in the downlink is a downlink primary component carrier (DL PCC), and the carrier corresponding to the primary cell in the uplink is an uplink primary component carrier (UL PCC). ). The carrier corresponding to the secondary cell in the downlink is a downlink secondary component carrier (DL SCC), and the carrier corresponding to the secondary cell in the uplink is an uplink secondary component carrier (UL SCC). ).

  The primary cell includes a downlink component carrier and an uplink component carrier. The secondary cell is configured by only a downlink primary component carrier and an uplink primary component carrier, or a downlink component carrier. That is, the secondary cell is not configured by only uplink component carriers. In FIG. 2, cell 0 and cell 1 are configured by a downlink component carrier and an uplink component carrier. In FIG. 2, cell 2 and cell 3 are configured only by downlink component carriers.

  Each physical channel is transmitted in any one cell. That is, a single physical channel is not transmitted across multiple cells. The mobile station apparatus 1 transmits PUCCH only in the primary cell. That is, the mobile station apparatus 1 does not transmit PUCCH in the secondary cell. That is, in FIG. 2, mobile station apparatus 1 transmits PUCCH only in cell 0. The mobile station apparatus 1 does not receive a plurality of PDSCHs in a single cell. Moreover, the mobile station apparatus 1 does not transmit a plurality of PUSCHs in a single cell. Moreover, the mobile station apparatus 1 is set by the base station apparatus 3 whether PUCCH and PUSCH may be transmitted simultaneously.

  The configuration of the downlink radio frame according to this embodiment will be described below.

  FIG. 3 is a diagram illustrating a schematic configuration of a radio frame of a downlink component carrier according to the present embodiment. In FIG. 3, the horizontal axis is the time domain, and the vertical axis is the frequency domain. Each radio frame is 10 ms long. Each radio frame is composed of 20 slots. Each of the slots is 0.5 ms long. Slots in the radio frame are numbered from 0 to 19. Each of the subframes is 1 ms long. A subframe is defined by two consecutive slots. The i-th subframe in the radio frame is composed of a (2 × i) th slot and a (2 × i + 1) th slot. That is, 10 subframes can be used in each 10 ms interval.

  The signal or physical channel transmitted in each of the slots is represented by a resource grid. The resource grid is defined by a plurality of subcarriers and a plurality of OFDM symbols. The number of subcarriers constituting one slot depends on the bandwidth of the downlink component carrier. The number of OFDM symbols constituting one slot is seven. Each element in the resource grid is referred to as a resource element. The resource element is identified using a subcarrier number and an OFDM symbol number.

  The resource block is used to express a mapping of resource elements of a certain physical downlink channel (PDSCH or the like). As resource blocks, virtual resource blocks and physical resource blocks are defined. A physical downlink channel is first mapped to a virtual resource block. Thereafter, the virtual resource block is mapped to the physical resource block. One physical resource block is defined by 7 consecutive OFDM symbols in the time domain and 12 consecutive subcarriers in the frequency domain. Therefore, one physical resource block is composed of (7 × 12) resource elements. One physical resource block corresponds to one slot in the time domain and corresponds to 180 kHz in the frequency domain. Physical resource blocks are numbered from 0 in the frequency domain.

  Hereinafter, an example of downlink reference signal mapping according to the present embodiment will be described.

FIG. 4 is a diagram illustrating an example of mapping of downlink reference signals according to the present embodiment. In FIG. 4, the horizontal axis is the time domain, and the vertical axis is the frequency domain. FIG. 4 shows only physical resource blocks having the same number in a certain subframe. In FIG. 4, the bold squares are physical resource blocks. The downlink reference signal includes a cell-specific reference signal (CRS) and a CSI reference signal (CSI reference signal: CSI-RS). The base station apparatus 3 transmits CRS in all downlink subframes in the cell. The base station apparatus 3 transmits CSI-RS in a downlink subframe that is periodically set in the cell.

  In FIG. 4, the squares with Ci are resource elements used for CRS transmission of antenna port i (i = 0, 1). In FIG. 4, the squares with CSIx, y are resource elements used for transmission of CSI-RS of antenna port x and CSI-RS of antenna port y (x = 15, 17, 19, 21; y = 16, 18, 20, 22). In FIG. 4, the CSI-RS of the antenna port x and the CSI-RS of the antenna port y are code-multiplexed.

  A resource element used for CRS transmission is determined based on a physical-layer cell identity (PCI, Cell ID) of a cell. The resource element used for transmission of CSI-RS in the physical resource block is set by the base station apparatus 3. The base station apparatus 3 transmits to the mobile station apparatus 1 information related to CSI-RS settings indicating periodically set downlink subframes, resource elements used for CSI-RS transmission, and the like.

  Hereinafter, an example of physical downlink channel mapping according to the present embodiment will be described.

  FIG. 5 is a diagram illustrating an example of physical downlink channel mapping in the downlink component carrier of the present embodiment. In FIG. 5, the horizontal axis is the time domain, and the vertical axis is the frequency domain. PCFICH is mapped to the 0th (first) OFDM symbol in the subframe. PCFICH is mapped to four resource element groups distributed in the frequency domain. A resource element group is composed of a plurality of continuous resource elements. The PHICH is mapped to the 0th (first) OFDM symbol in the subframe. One PCFICH is mapped to three resource element groups distributed in the frequency domain. Moreover, the base station apparatus 3 can code-multiplex several PCFICH on the same resource element.

  The PDCCH is mapped to OFDM symbols from No. 0, No. 0 and No. 1 or No. 0 to No. 2 in the subframe. In the 0th OFDM symbol, the PDCCH is mapped avoiding the resource elements to which the PCFICH and PHICH are mapped. The mobile station apparatus 1 recognizes the OFDM symbol to which the PDCCH is mapped based on information received by PCFICH. Moreover, the base station apparatus 3 can time and frequency multiplex a plurality of PDCCHs. The PDSCH is mapped to an OFDM symbol to which the PDCCH in the subframe is not mapped. The base station apparatus 3 can frequency-multiplex, time-multiplex and / or spatially multiplex a plurality of PDSCHs.

  The synchronization signal is transmitted in the 0th and 5th subframes in each of the radio frames in the time domain. In the 0th and 5th subframes, the synchronization signal is transmitted using the 5th and 6th OFDM symbols in the first slot. In addition, the synchronization signal is transmitted on 72 subcarriers in the center of the downlink of the cell in the frequency domain.

  PBCH is transmitted in the 0th subframe in each radio frame in the time domain. In the 0th subframe, the PBCH is transmitted using OFDM symbols from the 0th to the 3rd in the second slot. In addition, PBCH is transmitted on 72 subcarriers in the center of the downlink of the cell in the frequency domain. The description of PMCH is omitted. In FIG. 5, the downlink reference signal, the synchronization signal, and the PBCH are omitted.

  The configuration of the uplink radio frame according to this embodiment will be described below.

  FIG. 6 is a diagram illustrating a schematic configuration of a radio frame of an uplink component carrier according to the present embodiment. In FIG. 6, the horizontal axis is the time domain, and the vertical axis is the frequency domain. Each radio frame is 10 ms long. Each radio frame is composed of 20 slots. Each of the slots is 0.5 ms long. Slots in the radio frame are numbered from 0 to 19. Each of the subframes is 1 ms long. A subframe is defined by two consecutive slots. The i-th subframe in the radio frame is composed of a (2 × i) th slot and a (2 × i + 1) th slot. That is, 10 subframes can be used in each 10 ms interval.

  The signal or physical channel transmitted in each of the slots is represented by a resource grid. The resource grid is defined by a plurality of subcarriers and a plurality of SC-FDMA symbols. The number of subcarriers constituting one slot depends on the bandwidth of the uplink component carrier. The number of SC-FDMA symbols constituting one slot is seven. Each element in the resource grid is referred to as a resource element. The resource element is identified using the subcarrier number and the SC-FDMA symbol number.

  The resource block is used to express a mapping of resource elements of a certain physical uplink channel (PUSCH or the like). As resource blocks, virtual resource blocks and physical resource blocks are defined. A physical uplink channel is first mapped to a virtual resource block. Thereafter, the virtual resource block is mapped to the physical resource block. One physical resource block is defined by 7 consecutive SC-FDMA symbols in the time domain and 12 consecutive subcarriers in the frequency domain. Therefore, one physical resource block is composed of (7 × 12) resource elements. One physical resource block corresponds to one slot in the time domain and corresponds to 180 kHz in the frequency domain. Physical resource blocks are numbered from 0 in the frequency domain.

  Hereinafter, an example of physical uplink channel mapping according to the present embodiment will be described.

  FIG. 7 is a diagram illustrating an example of physical uplink channel mapping in the uplink component carrier of the present embodiment. In FIG. 7, the horizontal axis is the time domain, and the vertical axis is the frequency domain. The PUCCH is mapped to physical resource blocks at both ends in the subframe. A single PUCCH is transmitted using physical resource blocks that are symmetrical in the frequency domain in the first slot and the second slot. For example, the mobile station apparatus 1 transmits a single PUCCH using the 0th physical resource block of the first slot and the highest numbered physical resource block of the second slot.

Code multiplexing is applied to the PUCCH. A plurality of PUCCH formats 1, 1a, 1b and 2 are code-multiplexed. A plurality of PUCCH formats 3 are code-multiplexed. PUCCH formats 1, 1a, 1b and 2 and PUCCH format 3 are not code-multiplexed.

  The PUSCH is mapped to a physical resource block to which the PUCCH in the subframe is not mapped. The plurality of PUSCHs are frequency multiplexed, time multiplexed and / or spatially multiplexed.

  Hereinafter, periodic reporting of channel state information using the PUCCH according to the present embodiment will be described.

  The base station device 3 sets the mobile station device 1 to report periodic channel state information on the PUCCH using any of the report modes. The base station apparatus 3 sets a report mode and a PUCCH resource used for reporting periodic channel state information for each cell. The base station device 3 transmits information related to the report of periodic channel state information for each cell to the mobile station device 1.

(A) For example, the report mode 1-0 is a report mode in which no PMI is transmitted. The report mode 1-0 is a report mode in which a wideband CQI is transmitted without transmitting a subband CQI.
(B) For example, the report mode 1-1 is a report mode in which PMI is transmitted. In addition, the report mode 1-1 is a report mode in which subband CQI and wideband CQI are transmitted.
(C) For example, the report mode 2-0 is a report mode in which no PMI is transmitted. The report mode 2-0 is a report mode in which the wideband CQI is transmitted without transmitting the subband CQI.
(D) For example, the report mode 2-1 is a report mode in which PMI is transmitted. Further, the report mode 2-1 is a report mode for transmitting the subband CQI and the wideband CQI.

  The wideband CQI is calculated based on CRS and / or CSI-RS transmitted in all physical resource blocks in a certain subframe of a certain cell. The subband CQI is calculated based on CRS and / or CSI-RS transmitted in physical resource blocks constituting a specific partial band in a certain subframe of a certain cell.

  Each reporting mode of channel state information supports multiple report types.

(A) For example, report type 1 supports subband CQI feedback.
(B) For example, report type 1a supports subband CQI and PMI feedback.
(C) For example, report type 2, report type 2a, and report type 2b support wideband CQI and PMI feedback.
(D) For example, report type 3 supports RI feedback.
(E) For example, report type 4 supports wideband CQI feedback.
(F) For example, report type 5 supports RI and wideband PMI feedback.
(G) For example, report type 6 supports RI and PTI Fordback.

  When the report mode 1-0 is set for a certain cell, the mobile station apparatus 1 reports the report type 3 and report type 4 channel state information corresponding to the cell to the base station apparatus 3. When mobile station apparatus 1 is set to report mode 1-1 for a certain cell, base station apparatus reports channel state information of report type 2 / 2b / 2c, report type 3 and report type 5 corresponding to the cell. Report to 3.

  When the mobile station apparatus 1 is set to the report mode 2-0 for a certain cell, the mobile station apparatus 1 reports the channel state information of the report type 1, report type 3, and report type 4 corresponding to the cell to the base station apparatus 3. . When mobile station apparatus 1 is set to report mode 2-1 for a certain cell, channels of report type 1 / 1a, report type 2 / 2a / 2b, report type 3 and report type 6 corresponding to the cell The state information is reported to the base station apparatus 3.

  Hereinafter, the apparatus configuration of the present embodiment will be described.

  FIG. 8 is a schematic block diagram showing the configuration of the mobile station apparatus 1 of the present embodiment. As illustrated, the mobile station apparatus 1 includes an upper layer processing unit 101, a control unit 103, a receiving unit 105, a transmitting unit 107, and a transmission / reception antenna 109. The upper layer processing unit 101 includes a radio resource control unit 1011, a scheduling information interpretation unit 1013, and a channel state information selection unit 1015. The reception unit 105 includes a decoding unit 1051, a demodulation unit 1053, a demultiplexing unit 1055, a radio reception unit 1057, and a channel measurement unit 1059. The transmission unit 107 includes an encoding unit 1071, a modulation unit 1073, a multiplexing unit 1075, a radio transmission unit 1077, and an uplink reference signal generation unit 1079.

The upper layer processing unit 101 outputs uplink data (transport block) generated by a user operation or the like to the transmission unit 107. The upper layer processing unit 101 includes a medium access control (MAC) layer, a packet data integration protocol (PDCP) layer, a radio link control (Radio Link Control: RLC) layer, and radio resource control. Process the (Radio Resource Control: RRC) layer.

  The radio resource control unit 1011 included in the higher layer processing unit 101 manages various setting information of the own device. For example, the radio resource control unit 1011 manages cells and reports on periodic channel state information. Also, the radio resource control unit 1011 generates information arranged in each uplink channel and outputs the information to the transmission unit 107.

  A scheduling information interpretation unit 1013 provided in the upper layer processing unit 101 interprets information used for scheduling of physical channels (PUSCH, PDSCH, etc.) received via the reception unit 105. The scheduling information interpretation unit 1013 generates control information to control the reception unit 105 and the transmission unit 107 based on the result of interpreting the information, and outputs the control information to the control unit 103.

  The channel state information selection unit 1015 included in the upper layer processing unit 101 selects which channel state information report is to be transmitted when a plurality of periodic channel state information reports collide. Channel state information selection section 1015 also selects a resource for transmitting channel state information. The channel state information selection unit 1015 generates control information for controlling the transmission unit 107 to transmit the selected channel state information using the selected resource, and outputs the control information to the control unit 103. Detailed operations regarding channel state information selection and resource selection will be described later.

  The control unit 103 generates a control signal for controlling the reception unit 105 and the transmission unit 107 based on the control information from the higher layer processing unit 101. Control unit 103 outputs the generated control signal to receiving unit 105 and transmitting unit 107 to control receiving unit 105 and transmitting unit 107.

  The receiving unit 105 separates, demodulates, and decodes the received signal received from the base station apparatus 3 via the transmission / reception antenna 109 according to the control signal input from the control unit 103, and sends the decoded information to the upper layer processing unit 101. Output.

The radio reception unit 1057 converts a downlink signal received via the transmission / reception antenna 109 into an intermediate frequency (down covert), removes unnecessary frequency components,
The amplification level is controlled so that the signal level is properly maintained, quadrature demodulation is performed based on the in-phase component and the quadrature component of the received signal, and the analog signal that has been demodulated is converted into a digital signal. The radio reception unit 1057 removes a portion corresponding to a guard interval (GI) from the converted digital signal, performs a fast Fourier transform (FFT) on the signal from which the guard interval has been removed, and performs frequency conversion. Extract the region signal.

  The demultiplexing unit 1055 separates the extracted signal into PHICH, PDCCH, PDSCH, and downlink reference signal. Further, demultiplexing section 1055 compensates the propagation path of PHICH, PDCCH, and PDSCH from the estimated propagation path value input from channel measurement section 1059. Also, the demultiplexing unit 1055 outputs the demultiplexed downlink reference signal to the channel measurement unit 1059.

The demodulating unit 1053 multiplies the PHICH by a corresponding code and synthesizes it, demodulates the synthesized signal using a BPSK (Binary Phase Shift Keying) modulation method, and decodes the decoding unit 1.
Output to 051. Decoding section 1051 decodes the PHICH addressed to the own apparatus, and outputs the decoded HARQ indicator to higher layer processing section 101. Demodulation section 1053 demodulates the QPSK modulation scheme for PDCCH and outputs the result to decoding section 1051. Decoding section 1051 attempts blind decoding of PDCCH, and when blind decoding is successful, decodes downlink control information and outputs RNTI included in downlink control information to higher layer processing section 101.

The demodulation unit 1053 performs QPSK (Quadrature Phase Shift Keying) on the PDSCH.
), 16QAM (Quadrature Amplitude Modulation), 64QAM, etc., are demodulated in accordance with the modulation scheme notified by downlink assignment, and output to the decoding unit 1051. The decoding unit 1051 performs decoding based on the information regarding the coding rate notified by the downlink control information, and outputs the decoded downlink data (transport block) to the higher layer processing unit 101.

  Channel measurement section 1059 measures the downlink path loss from the downlink reference signal input from demultiplexing section 1055, and outputs the measured path loss to higher layer processing section 101. Channel measurement section 1059 calculates channel state information from the downlink reference signal input from demultiplexing section 1055, and outputs the calculated channel state information to higher layer processing section 101. Also, channel measurement section 1059 calculates an estimated value of the downlink propagation path from the downlink reference signal, and outputs it to demultiplexing section 1055.

  The transmission unit 107 generates an uplink reference signal according to the control signal input from the control unit 103, encodes and modulates the uplink data (transport block) input from the higher layer processing unit 101, PUCCH, The PUSCH and the generated uplink reference signal are multiplexed and transmitted to the base station apparatus 3 via the transmission / reception antenna 109.

  The encoding unit 1071 performs encoding such as convolutional encoding and block encoding on the uplink control information input from the higher layer processing unit 101. The encoding unit 1071 performs turbo encoding based on information used for PUSCH scheduling.

The modulation unit 1073 modulates the coded bits input from the coding unit 1071 using a modulation method notified by downlink control information such as BPSK, QPSK, 16QAM, 64QAM, or a modulation method predetermined for each channel. . Modulation section 1073 determines the number of spatially multiplexed data sequences based on information used for PUSCH scheduling, and uses MIMO SM to transmit a plurality of uplink data transmitted on the same PUSCH to a plurality of uplink data. Mapping to a sequence and precoding the sequence.

The uplink reference signal generation unit 1079 is a physical layer cell identifier (physical cell identity: referred to as PCI, Cell ID, etc.) for identifying the base station device 3, a bandwidth for arranging the uplink reference signal, and an uplink grant. Based on the notified cyclic shift, the value of the parameter for generating the DMRS sequence, etc., a sequence determined by a predetermined rule is generated. The multiplexing unit 1075 rearranges the PUSCH modulation symbols in parallel according to the control signal input from the control unit 103, and then performs discrete Fourier transform (DFT). Also, multiplexing section 1075 multiplexes the PUCCH and PUSCH signals and the generated uplink reference signal for each transmission antenna port. That is, multiplexing section 1075 arranges the PUCCH and PUSCH signals and the generated uplink reference signal in the resource element for each transmission antenna port.

The radio transmission unit 1077 converts the multiplexed signal into an inverse fast Fourier transform (Inverse Fast Fourier Transform).
Transform: IFFT) to perform SC-FDMA modulation, add a guard interval to the SC-FDMA modulated SC-FDMA symbol, generate a baseband digital signal, and convert the baseband digital signal to an analog signal To generate an in-phase and quadrature component of the intermediate frequency from the analog signal, remove the excess frequency component for the intermediate frequency band, and convert the intermediate frequency signal to a high-frequency signal (up convert) The excess frequency component is removed, the power is amplified, and output to the transmission / reception antenna 109 for transmission.

  FIG. 9 is a schematic block diagram illustrating the configuration of the base station device 3 of the present embodiment. As illustrated, the base station apparatus 3 includes an upper layer processing unit 301, a control unit 303, a reception unit 305, a transmission unit 307, and a transmission / reception antenna 309. The upper layer processing unit 301 includes a radio resource control unit 3011, a scheduling unit 3013, and a control information generation unit 3015. The reception unit 305 includes a decoding unit 3051, a demodulation unit 3053, a demultiplexing unit 3055, a wireless reception unit 3057, and a channel measurement unit 3059. The transmission unit 307 includes an encoding unit 3071, a modulation unit 3073, a multiplexing unit 3075, a radio transmission unit 3077, and a downlink reference signal generation unit 3079.

  The upper layer processing unit 301 includes a medium access control (MAC) layer, a packet data integration protocol (PDCP) layer, a radio link control (RLC) layer, and a radio resource control (Radio). Resource Control (RRC) layer processing. Further, upper layer processing section 301 generates control information for controlling receiving section 305 and transmitting section 307 and outputs the control information to control section 303.

The radio resource control unit 3011 included in the upper layer processing unit 301 generates downlink data (transport block), RRC signal, and MAC CE (Control Element) arranged in the downlink PDSCH, or acquires from the upper node. And output to the transmission unit 307. Further, the radio resource control unit 3011 manages various setting information of each mobile station apparatus 1. For example, the radio resource control unit 3011 performs cell management, periodic channel state information report management, and the like.

The scheduling unit 3013 included in the higher layer processing unit 301 determines the physical channel (PDSCH) from the channel estimation value and channel state information input from the channel measurement unit 3059.
And PUSCH) and the coding rate and modulation scheme and transmission power of physical channels (PDSCH and PUSCH) are determined. Based on the scheduling result, scheduling section 3013 generates control information for controlling receiving section 305 and transmitting section 307 and outputs the control information to control section 303. In addition, the scheduling unit 3013 outputs the scheduling results of the physical channels (PDSCH and PUSCH) to the control information generation unit 3015.

  The control information generation unit 3015 generates information used for scheduling of physical channels (PDSCH and PUSCH) based on the scheduling result input from the scheduling unit 3013. Further, the control information generation unit 3015 outputs the generated information to the transmission unit 307.

  The control unit 303 generates a control signal for controlling the reception unit 305 and the transmission unit 307 based on the control information from the higher layer processing unit 301. The control unit 303 outputs the generated control signal to the reception unit 305 and the transmission unit 307 and controls the reception unit 305 and the transmission unit 307.

The receiving unit 305 separates, demodulates and decodes the received signal received from the mobile station apparatus 1 via the transmission / reception antenna 309 according to the control signal input from the control unit 303, and outputs the decoded information to the higher layer processing unit 301. To do. The radio reception unit 3057 converts an uplink signal received through the transmission / reception antenna 309 into an intermediate frequency (down-conversion: down covert).
, Remove unnecessary frequency components, control the amplification level so that the signal level is properly maintained, perform quadrature demodulation based on the in-phase and quadrature components of the received signal, and convert the quadrature demodulated analog signal Convert to digital signal.

The wireless reception unit 3057 removes a portion corresponding to a guard interval (GI) from the converted digital signal. The radio reception unit 3057 performs fast Fourier transform (FFT) on the signal from which the guard interval is removed, extracts a signal in the frequency domain, and outputs the signal to the demultiplexing unit 3055.

  The demultiplexing unit 1055 demultiplexes the signal input from the radio reception unit 3057 into signals such as PUCCH, PUSCH, and uplink reference signal. This separation is performed based on radio resource allocation information included in the uplink grant that is determined in advance by the radio resource control unit 3011 by the base station device 3 and notified to each mobile station device 1. In addition, demultiplexing section 3055 compensates for the propagation paths of PUCCH and PUSCH from the propagation path estimation value input from channel measurement section 3059. Further, the demultiplexing unit 3055 outputs the separated uplink reference signal to the channel measurement unit 3059.

The demodulating unit 3053 performs inverse discrete Fourier transform (IDFT) on the PUSCH, obtains modulation symbols, and performs BPSK (Binary Phase Shift Keying), QPSK, 16QAM, PUCCH and PUSCH modulation symbols, respectively. 64
The received signal is demodulated using a predetermined modulation scheme such as QAM, or the modulation scheme notified by the own device to each mobile station device 1 in advance using an uplink grant. Demodulation section 3053 is the same by using MIMO SM based on the number of spatially multiplexed sequences notified in advance to each mobile station apparatus 1 using an uplink grant and information indicating precoding to be performed on the sequences. The modulation symbols of a plurality of uplink data transmitted on the PUSCH are separated.

The decoding unit 3051 encodes the demodulated PUCCH and PUSCH encoded bits in a predetermined encoding method in advance or the mobile station apparatus 1 previously notified to the mobile station apparatus 1 using an uplink grant. Decoding is performed at a rate, and the decoded uplink data and uplink control information are output to the upper layer processing section 101. When PUSCH is retransmitted, decoding section 3051 performs decoding using the encoded bits held in the HARQ buffer input from higher layer processing section 301 and the demodulated encoded bits. Channel measurement section 309 measures an estimated channel value, channel quality, and the like from the uplink reference signal input from demultiplexing section 3055 and outputs the result to demultiplexing section 3055 and higher layer processing section 301.

  The transmission unit 307 generates a downlink reference signal according to the control signal input from the control unit 303, encodes and modulates the HARQ indicator, downlink control information, and downlink data input from the higher layer processing unit 301. Then, the PHICH, PDCCH, PDSCH, and downlink reference signal are multiplexed, and the signal is transmitted to the mobile station device 1 via the transmission / reception antenna 309.

  The encoding unit 3071 is a predetermined encoding method such as block encoding, convolutional encoding, turbo encoding, and the like for the HARQ indicator, downlink control information, and downlink data input from the higher layer processing unit 301 Or is encoded using the encoding method determined by the radio resource control unit 3011. The modulation unit 3073 modulates the coded bits input from the coding unit 3071 with a modulation scheme determined in advance by the radio resource control unit 3011 such as BPSK, QPSK, 16QAM, and 64QAM.

  The downlink reference signal generation unit 3079 obtains a sequence known by the mobile station device 1 as a downlink reference signal, which is obtained by a predetermined rule based on a physical layer cell identifier (PCI) for identifying the base station device 3 or the like. Generate. The multiplexing unit 3075 multiplexes the modulated modulation symbol of each channel and the generated downlink reference signal. That is, multiplexing section 3075 arranges the modulated modulation symbol of each channel and the generated downlink reference signal in the resource element.

  The radio transmission unit 3077 performs inverse fast Fourier transform (IFFT) on the multiplexed modulation symbols and the like, performs modulation of the OFDM scheme, adds a guard interval to the OFDM symbol that has been OFDM-modulated, and baseband The baseband digital signal is converted to an analog signal, the in-phase and quadrature components of the intermediate frequency are generated from the analog signal, the extra frequency components for the intermediate frequency band are removed, and the intermediate-frequency signal is generated. Is converted to a high-frequency signal (up-convert: up-convert), an extra frequency component is removed, power is amplified, and output to the transmission / reception antenna 309 for transmission.

  Hereinafter, a detailed configuration of the PUCCH format 2 of the present embodiment will be described.

FIG. 10 is a diagram illustrating an example of encoding and modulation of channel state information transmitted using the PUCCH format 2 of the present embodiment. In FIG. 10, the mobile station apparatus 1 encodes up to 11 bits of channel state information o _i corresponding to a single cell based on Equation (1), and a 20-bit encoded bit sequence q _i (i = 0, 1, ..., 19) is obtained (step S1000). 10, mobile station apparatus 1 QPSK modulates coded bit sequence q _i to obtain 10 modulation symbols d (i) (i = 0, 1,..., 9) (step S1002).

In Expression (1), O is the number of bits of channel state information transmitted using PUCCH format 2. In Expression (1), [X] mod [Y] is a function for obtaining a remainder when [X] is divided by [Y]. FIG. 11 is a diagram illustrating an example of a sequence M _{i, n} used for encoding channel state information transmitted in the PUCCH format 2 of the present embodiment.

  FIG. 12 is a diagram illustrating an example of the configuration of the first slot of the PUCCH format 2 of the present embodiment. FIG. 13 is a diagram illustrating an example of the configuration of the second slot of the PUCCH format 2 of the present embodiment. 12 and 13, the horizontal axis is the time domain, and the vertical axis is the frequency domain. The mobile station apparatus 1 transmits modulation symbols from d (0) to d (4) using one physical resource block in the first slot. The mobile station apparatus 1 transmits modulation symbols d (5) to d (9) using one physical resource block of the second slot.

12 and 13, complex value symbols generated by multiplying modulation symbols of channel state information by orthogonal sequences r ^(α) _{u, ν} (i) (i = 0, 1,..., 11) Place in the resource element. 12 and 13, the complex value symbols corresponding to the channel state information are assigned to the resource elements of the 0th, 2nd, 3rd, 4th and 6th SC-FDMA symbols in the first slot and the second slot. Be placed. In the first slot and the second slot, uplink reference signals are arranged in the resource elements of the first and fifth SC-FDMA symbols.

12 and 13, the orthogonal sequence r ^(α) _{u, v} (i) is ^cyclically shifted to the base sequence r ′ _{u, v} (i) (i = 0, 1,..., 11) e ^jαn. Is generated by multiplying by. FIG. 14 is a diagram illustrating an example of the base sequence of the present embodiment. The base sequence number ν of the base sequence used for PUCCH transmission is always 0. The sequence group number u of the base sequence is calculated using a pseudo random sequence and / or a sequence shift pattern. The initial value of the pseudo-random sequence and the value of the sequence shift pattern are calculated using the physical layer cell identifier. The cyclic shift parameter α is calculated using information transmitted from the base station apparatus 3 to the mobile station apparatus 1 and a pseudo-random sequence.

  Hereinafter, a detailed configuration of the PUCCH format 3 of the present embodiment will be described.

  FIG. 15 is a diagram illustrating an example of encoding and modulation of channel state information transmitted using the PUCCH format 3 of the present embodiment. FIG. 15 shows an example when mobile station apparatus 1 transmits channel state information corresponding to the first cell and channel state information corresponding to the second cell using PUCCH format 3. The mobile station device 1 may transmit channel state information corresponding to a single cell using the PUCCH format 3. In addition, the mobile station apparatus 1 may transmit the set of 3 or more channel state information corresponding to each of 3 or more cells using PUCCH format 3.

In FIG. 15, the mobile station device 1 encodes channel state information o ⁽⁰⁾ _i up to 11 bits corresponding to the first cell based on the equation (2), and a 24-bit encoded bit sequence q ^{(0 )} _I (i = 0, 1,..., 23) is obtained (step S1500). In FIG. 15, the mobile station apparatus 1 encodes channel state information o ⁽¹⁾ _i up to 11 bits corresponding to the second cell based on the equation (2), and a 24-bit encoded bit sequence q ^{(1 )} _I (i = 0, 1,..., 23) is obtained (step S1500). In Equation (2), O ^(x) is the number of bits of channel state information corresponding to the xth cell. FIG. 16 is a diagram illustrating an example of a sequence M _{i, n} used for encoding channel state information transmitted in the PUCCH format 3 of the present embodiment.

In FIG. 15, the mobile station apparatus 1 sets the coded bit q ⁽⁰⁾ _i of the channel state information corresponding to the first cell and the coded bit q ⁽¹⁾ _i of the channel state information corresponding to the second cell. The 48 bit encoded bit sequence q _i is generated by concatenation (step S1504). 15, the mobile station apparatus 1 QPSK modulates the coded bit sequence q _i to obtain 24 modulation symbols d (i) (i = 0, 1,..., 23) (step S1506).

  FIG. 17 is a diagram illustrating an example of the configuration of the first slot of the PUCCH format 3 of the present embodiment. FIG. 18 is a diagram illustrating an example of the configuration of the second slot of the PUCCH format 3 of the present embodiment. 17 and 18, the horizontal axis is the time domain, and the vertical axis is the frequency domain. The mobile station apparatus 1 transmits modulation symbols from d (0) to d (11) using one physical resource block in the first slot. The mobile station apparatus 1 transmits modulation symbols from d (12) to d (23) using one physical resource block of the second slot.

  17 and 18, the mobile station apparatus 1 spreads the modulation symbols of the channel state information using the orthogonal sequence w (i). Moreover, the mobile station apparatus 1 multiplies the modulation symbol of the spread channel state information by a cyclic shift. The cyclic shift value is calculated using a pseudo-random sequence. The pseudo-random sequence is recalculated for each SC-FDMA symbol.

The mobile station apparatus 1 performs a discrete Fourier transform (DFT) process on the symbol multiplied by the cyclic shift. The mobile station apparatus 1 arranges a complex value symbol that is an output of DFT processing in a resource element. In FIG. 17 and FIG. 18, the complex value symbols corresponding to the channel state information are the resource elements of the 0th, 2nd, 3rd, 4th and 6th SC-FDMA symbols in the first slot and the second slot. Be placed. In the first slot and the second slot, uplink reference signals are arranged in the resource elements of the first and fifth SC-FDMA symbols.

  Hereinafter, the first embodiment of the present embodiment will be described in detail with reference to the drawings.

The base station apparatus 3 according to the first embodiment provides the mobile station apparatus 1 with PUCCH format 2 (first format) resources that can be used for reporting one channel state information for each of a plurality of cells. Set. The base station apparatus 3 of the first embodiment sets periodic reports of channel state information using resources of PUCCH format 2 (first format) in the mobile station apparatus 1 for each of the plurality of cells. To do. Also, the base station apparatus 3 of the first embodiment sets one resource of the PUCCH format 3 (second format) that can be used for reporting a plurality of channel state information in the mobile station apparatus 1. Moreover, the base station apparatus 3 of 1st Embodiment transmits the downlink control information used for scheduling of PUSCH to the mobile station apparatus 1. FIG. Moreover, the base station apparatus 3 of 1st Embodiment transmits the information which instruct | indicates whether simultaneous transmission of PUSCH and PUCCH is set to the mobile station apparatus 1. FIG. For example, the base station apparatus 3 sets the PUCCH format 2 resource in the mobile station apparatus 1 using a higher layer signal (radio resource control information dedicated to the mobile station apparatus 1). Further, for example, the base station apparatus 3 sets resources in the PUCCH format 3 in the mobile station apparatus 1 using a higher layer signal (radio resource control information dedicated to the mobile station apparatus 1). That is, for example, the base station apparatus 3 uses a higher layer signal (radio resource control information dedicated to the mobile station apparatus 1), and a PUCCH format 2 resource and a single PUCCH format 3 resource for each of a plurality of cells. Is set in the mobile station apparatus 1.

  The base station apparatus 3 according to the first embodiment sets TRUE or FALSE to information indicating whether simultaneous transmission of PUSCH and PUCCH is set. TRUE indicates that simultaneous transmission of PUSCH and PUCCH is permitted. FALSE indicates that simultaneous transmission of PUSCH and PUCCH is not permitted. The mobile station apparatus 1 of 1st Embodiment applies the setting of simultaneous transmission of PUSCH and PUCCH based on the information which instruct | indicates whether simultaneous transmission of PUSCH and PUCCH is set.

  The mobile station apparatus 1 that is not configured to simultaneously transmit PUSCH and PUCCH according to the first embodiment does not transmit PUSCH in a certain subframe, and reports channel state information using PUCCH format 2 in other channel states. When there is no collision with the information report, the non-collision channel state information report is transmitted to the base station apparatus 3 using the PUCCH format 2 resource.

  The mobile station apparatus 1 that is not configured to simultaneously transmit PUSCH and PUCCH according to the first embodiment does not transmit PUSCH in a certain subframe, and the reports of the plurality of channel state information using PUCCH format 2 collide. In the case of using the PUCCH format 3 resource, a part or all of the plurality of colliding channel state information reports are transmitted to the base station apparatus 3.

  The mobile station apparatus 1 that is not configured to simultaneously transmit PUSCH and PUCCH according to the first embodiment transmits at least one PUSCH in a certain subframe, and reports at least one channel state information using PUCCH format 2 If there is, a part or all of the report of the at least one channel state information is transmitted to the base station apparatus 3 using resources of one PUSCH among the at least one PUSCH.

  In the mobile station apparatus 1 configured to simultaneously transmit PUSCH and PUCCH according to the first embodiment, in a certain subframe, the report of channel state information using PUCCH format 2 collides with the report of other channel state information. If not, the non-collision channel state information report is transmitted to the base station apparatus 3 using the PUCCH format 2 resource.

  The mobile station apparatus 1 configured to simultaneously transmit the PUSCH and the PUCCH according to the first embodiment has the PUCCH when the reports of the plurality of channel state information using the PUCCH format 2 collide in a certain subframe. A part or all of the reports of the plurality of conflicting channel state information are transmitted to the base station apparatus 3 using the format 3 resource.

FIG. 19 is a diagram illustrating an example of periodic channel state information setting corresponding to each of the cell 0 to the cell 3 according to the present embodiment. In FIG. 19, PUCCH format 2 resource, channel state information report mode, wideband / subband CQI offset, wideband CQI period, subband CQI period (report) for each of cell 0 to cell 3 Mode 2-0 and Mode 2-1 only), RI offset and RI period are set. In FIG. 19, resource 1 to resource 4 are resources of the primary cell (uplink primary component carrier). In FIG. 19, some or all of resource 1 to resource 4 may be the same resource. In FIG. 19, resource 1 to resource 4 may be different resources.

  FIG. 20 is a diagram illustrating the report timing of the channel state information in the case of following the setting of FIG. In FIG. 20, the horizontal axis is the time domain. Since the base station apparatus 3 independently sets periodic channel state information reports for each cell, there is a possibility that a plurality of channel state information corresponding to a plurality of cells collide. Further, since the CQI offset / period and RI offset / period are set separately for a certain cell, channel state information of different report types corresponding to the same cell may collide. For example, in FIG. 20, the report of the channel state information of cell 3 and the report of the channel state information of cell 4 collide in the eighth subframe. Further, for example, in FIG. 20, the channel state information of report type 3 corresponding to cell 4 in the eighth subframe collides with the channel state information of report type 4 corresponding to the same cell 4.

  FIG. 21 is a diagram illustrating a first example of correspondence between channel state information reports and physical uplink control channel resources according to the present embodiment. The mobile station apparatus 1 that is not set to simultaneously transmit PUSCH and PUCCH does not transmit PUSCH in a certain subframe, and only reports the channel state information of report type 1 corresponding to cell 0, Channel state information is transmitted using resource 1 of PUCCH format 2 corresponding to cell 0.

  The mobile station apparatus 1 that is not set to simultaneously transmit PUSCH and PUCCH does not transmit PUSCH in a certain subframe, and reports channel state information of a certain report type (first report type) corresponding to a certain cell. If there is a collision with channel state information of a report type (second report type) different from the certain report type corresponding to the certain cell, the first report type or the Drop the report of any channel state information of the second report type. The report type (3, 5 or 6) has a higher priority than the report type (1, 1a, 2, 2a, 2b, 2c or 4). That is, the mobile station apparatus 1 that is not configured to simultaneously transmit PUSCH and PUCCH does not transmit PUSCH in a certain subframe, and does not transmit PUSCH, and does not transmit channel state information of a certain report type (3, 5, or 6) corresponding to a certain cell. When the report and the channel state information of the report type (1, 1a, 2, 2a, 2b, 2c or 4) corresponding to the certain cell collide, the report type (1, 1a, 2, 2a, 2b) Drop the report of the channel state information of 2c or 4).

  FIG. 22 is a diagram illustrating a second example of the correspondence between the channel state information report and the physical uplink control channel resource according to the present embodiment. In FIG. 22, a PUSCH is not transmitted in a certain subframe, a report type 1 channel state information report corresponding to cell 0, a report type 3 channel state information report corresponding to cell 1, and a cell 2 correspondence There is a collision between the report type 4 channel state information report and the report type 4 channel state information report corresponding to cell 3.

  In FIG. 22, when the mobile station apparatus 1 that is not set to simultaneously transmit PUSCH and PUCCH does not transmit PUSCH, it reports the report type 3 channel state information corresponding to cell 1 and the report corresponding to cell 2. A type 4 channel state information report is transmitted to the base station apparatus 3 using the PUCCH format 3 resource 5. When the report of the channel state information of more than 2 corresponding to each of the number of cells greater than 2 collides, the mobile station apparatus 1 is based on the priority of the report type and the cell index of the cell. The channel state information reports are dropped until the number of channel state information reports becomes two.

More specifically, the mobile station apparatus 1 that is not configured to simultaneously transmit PUSCH and PUCCH does not transmit PUSCH in a certain subframe, and there are more than 2 corresponding to each of more than two cells. If a number of channel state information reports collide, drop a report type channel state information report with a lower priority. When the priority of the report type of the channel state information is the same, the mobile station apparatus 1 uses the channel state information corresponding to a cell having a large cell index among the cells corresponding to the channel type information of the report type having the same priority. Drop from the report. That is, the mobile station apparatus 1 that is not set to simultaneously transmit PUSCH and PUCCH does not transmit PUSCH in a certain subframe, and has more than 2 channel states corresponding to each of more than 2 cells. When the information reports collide, the report of the channel state information of a report type with a high priority is transmitted to the base station apparatus 3. When the priority of the report type of the channel state information is the same, the mobile station device 1 uses the channel state information corresponding to a cell having a small cell index among the cells corresponding to the channel type information of the report type having the same priority. Is transmitted to the base station apparatus 3. For example, the mobile station apparatus 1 first determines the channel state information to report by using the report type of the channel state information. Furthermore, when the priority of the report type of channel state information is the same, the mobile station apparatus 1 determines the channel state information to report by using a cell index.

  The report type (3, 5, 6 or 2a) has a higher priority than the report type (1, 1a, 2, 2b, 2c or 4). That is, the mobile station apparatus 1 reports the report of channel state information of a certain report type (3, 5, 6 or 2a) corresponding to a certain cell and the report type (1, 1a, If there is a collision with the channel state information of 2, 2b, 2c or 4), the report of the channel state information of the report type (1, 1a, 2, 2b, 2c or 4) is preferentially dropped.

The report type (2, 2b, 2c, or 4) has a higher priority than the report type (1 or 1a).
That is, the mobile station apparatus 1 reports the channel state information of a certain report type (2, 2b, 2c or 4) corresponding to a certain cell and the report type (1 or 1a) corresponding to a cell different from the certain cell. When there is a collision with the channel state information of the channel type, the report of the channel state information of the report type (1 or 1a) is preferentially dropped.

  FIG. 23 is a diagram illustrating a third example of the correspondence between the channel state information report and the physical uplink control channel resource according to the present embodiment. In FIG. 23, in a certain subframe, a report type 1 channel state information report corresponding to cell 0, a report type 3 channel state information report corresponding to cell 1, and a report type 4 channel state corresponding to cell 2 are reported. There is a conflict between the reporting of information and the reporting of channel state information of report type 4 corresponding to cell 3. Also, in FIG. 23, mobile station apparatus 1 transmits PUSCH in cell 0 and cell 1.

  In FIG. 23, the mobile station apparatus 1 that is not set to simultaneously transmit PUSCH and PUCCH reports all channel state information corresponding to all cells (cell 0 to cell 3), and uses PUSCH resource 6 of cell 0. And transmitted to the base station apparatus 3. In addition, the mobile station apparatus 1 that is not set to simultaneously transmit PUSCH and PUCCH drops some channel state information based on the priority and / or cell index of the report type, and transmits the remaining channel state information using PUSCH. You may send it.

FIG. 24 is a flowchart showing processing for determining resources used for reporting channel state information according to this embodiment. The mobile station apparatus 1 determines whether a plurality of reports of channel state information of different report types corresponding to a certain cell collide (step S2400). The mobile station apparatus 1 performs the determination in step S2400 for each of the plurality of cells. When a plurality of reports of channel state information of different report types corresponding to a certain cell collide (Yes in step S2400), the mobile station apparatus 1 uses a report type with a low priority based on the report type priority. Drop the report of the channel state information of step S24.
The process proceeds to 04 (step S2402). When a plurality of reports of channel state information of different report types corresponding to a certain cell do not collide (No in step S2400), the mobile station apparatus 1 proceeds to step S2404.

  The mobile station apparatus 1 determines whether simultaneous transmission of PUSCH and PUCCH is set (permitted) by the base station apparatus 3 (step S2404). If the base station apparatus 3 has not set (permitted) simultaneous transmission of PUSCH and PUCCH (No in step S2404), the mobile station apparatus 1 proceeds to step S2406. If the base station apparatus 3 has set (permitted) simultaneous transmission of PUSCH and PUCCH (Yes in step S2404), the mobile station apparatus 1 proceeds to step S2408.

  The mobile station apparatus 1 determines whether to transmit at least one PUSCH in a certain subframe (step S2406). If the mobile station apparatus 1 does not transmit PUSCH in a certain subframe (No in step S2406), the mobile station apparatus 1 proceeds to step S2408. The mobile station apparatus 1 determines whether a plurality of reports of channel state information corresponding to different cells collide (step S2408). When a plurality of reports of channel state information corresponding to different cells do not collide (No in step S2408), the mobile station apparatus 1 reports a single channel state information and reports the single channel state information. Is transmitted using the PUCCH format 2 resource corresponding to (step S2410).

  When a plurality of reports of channel state information corresponding to different cells collide (Yes in step S2408), the mobile station device 1 determines the channel state information based on the report type priority and the cell index of the cell. Two reports are selected and other channel state information reports are dropped (step S2412). The mobile station apparatus 1 transmits two reports of the selected channel state information using a PUCCH format 3 resource used when a plurality of reports of channel state information corresponding to different cells collide (step S2414).

  When transmitting at least one PUSCH (Yes in step S2406), the mobile station apparatus 1 transmits one or more reports of channel state information corresponding to one or more cells using a single PUSCH. (Step S2416). After step S2410, step S2414, or step S2416, the mobile station apparatus 1 ends the channel state information report transmission process.

  Note that the base station apparatus 3 identifies to which cell the channel state information received using the PUCCH resource corresponds to the report type priority and the cell index. Also, the base station apparatus 3 uses which PUCCH or PUSCH resource the mobile station apparatus 1 uses to transmit the channel state information based on the periodic channel state information setting using PUCCH and the scheduling result of PUSCH. Can be identified.

  PUCCH format 2 has better frequency utilization efficiency than PUCCH format 3. In the present embodiment, when transmitting only a single report of channel state information, the mobile station device 1 transmits the channel state information using PUCCH format 2 that does not have the ability to transmit many bits. When transmitting a plurality of reports of state information, channel state information is transmitted using PUCCH format 3 capable of transmitting many bits. Therefore, the channel state information report can be efficiently transmitted by switching the PUCCH format in accordance with the number of channel state information reports. In addition, when simultaneous transmission of PUSCH and PUCCH is not set, and when PUSCH is transmitted, a plurality of channel state information can be transmitted using PUSCH resources. Thereby, the report of several channel state information can be transmitted efficiently.

  Hereinafter, the second embodiment of the present embodiment will be described in detail with reference to the drawings.

  The base station apparatus 3 of 2nd Embodiment sets the resource of PUCCH format 2 or PUCCH format 3 to the mobile station apparatus 1 with respect to each of several cells. The base station apparatus 3 of 1st Embodiment sets the periodic report of the channel state information using the resource of PUCCH format 2 or PUCCH format 3 to the mobile station apparatus 1 with respect to each of the plurality of cells. Moreover, the base station apparatus 3 of 1st Embodiment transmits the downlink control information used for scheduling of PUSCH to the mobile station apparatus 1. FIG. In addition, the base station device 3 of the first embodiment transmits information indicating whether simultaneous transmission of PUSCH and PUCCH is set to the mobile station device 1. For example, the base station apparatus 3 sets the resource of PUCCH format 2 or PUCCH format 3 in the mobile station apparatus 1 for each of a plurality of cells using an upper layer signal (dedicated radio resource control information). .

  The mobile station apparatus of 2nd Embodiment applies the setting of simultaneous transmission of PUSCH and PUCCH based on the information which instruct | indicates whether simultaneous transmission of PUSCH and PUCCH is set. The mobile station apparatus 1 that is not configured to simultaneously transmit PUSCH and PUCCH according to the second embodiment does not transmit PUSCH in a certain subframe, and reports channel state information using PUCCH format 2 or PUCCH format 3. When there is no collision with other channel state information reports, the non-collision channel state information report is transmitted to the base station apparatus 3 using the PUCCH format 2 or PUCCH format 3 resources.

  The mobile station apparatus 1 that is not set to simultaneously transmit PUSCH and PUCCH according to the second embodiment does not transmit PUSCH in a certain subframe, and reports channel state information using PUCCH format 3 in other channel states. When there is a collision with the information report, a part or all of the plurality of colliding channel state information reports are transmitted to the base station apparatus 3 using the PUCCH format 3 resource. For example, the report of the other channel state information may be a report of channel state information transmitted using a PUCCH format 2 resource. That is, in a certain subframe, when the report of the channel state information using the PUCCH format 2 resource and the report of the channel state information using the PUCCH format 3 resource collide, the mobile station apparatus 1 uses the PUCCH format 3 A report of part or all of the channel state information is transmitted using the resources.

  The mobile station apparatus 1 that is not configured to simultaneously transmit PUSCH and PUCCH according to the second embodiment transmits at least one PUSCH in a certain subframe, and at least one channel using PUCCH format 2 or PUCCH format 3 When there is a report of the state information, a part or all of the report of the at least one channel state information is transmitted to the base station apparatus 3 using a resource of one PUSCH among the at least one PUSCH. In addition, the mobile station apparatus 1 of the second embodiment has the PUCCH format 3 corresponding to the cell with the smallest cell index among a plurality of cells in which the report of the channel state information using the PUCCH format 3 collides. A part or all of the reports of the plurality of conflicting channel state information are transmitted to the base station apparatus 3 using resources.

  In the mobile station apparatus 1 configured to simultaneously transmit PUSCH and PUCCH according to the first embodiment, a channel state information report using the PUCCH format 2 or the PUCCH format 3 is transmitted in other channel state information in a certain subframe. If there is no collision with the report, the non-collision channel state information report is transmitted to the base station apparatus 3 using the PUCCH format 2 or PUCCH format 3 resource.

  In the mobile station apparatus 1 configured to simultaneously transmit PUSCH and PUCCH according to the first embodiment, in a certain subframe, a report on channel state information using PUCCH format 3 collides with a report on other channel state information. If the PUCCH format 3 resource is used, a part or all of the plurality of colliding channel state information reports are transmitted to the base station apparatus 3.

FIG. 25 is a diagram illustrating an example of encoding and modulation of single channel state information transmitted using the PUCCH format 3 of the second embodiment. In Figure 25, when transmitting the channel state information corresponding to the cell that is using the resources of the PUCCH format 3, the formula (3) the channel state information o _i of up to 11 bits corresponding to the given cell and (4) To obtain a 48-bit coded bit sequence q _i . (Step S2500). 25, the mobile station apparatus 1 QPSK modulates the coded bit sequence q _i to obtain 24 modulation symbols d (i) (i = 0, 1,..., 23) (step S2506).

  FIG. 26 is a diagram illustrating an example of periodic channel state information setting corresponding to each of the cell 0 to the cell 3 according to the second embodiment. In FIG. 26, for each of cell 0 to cell 3, the type of PUCCH format (PUCCH format 2 or PUCCH format 3), the resource of PUCCH format 2/3, the report mode of channel state information, and the wideband / subband CQI Offset, wideband CQI period, subband CQI period (only in reporting mode 2-0 and mode 2-1), RI offset, and RI period. In FIG. 26, resource 1 to resource 4 are resources of the primary cell (uplink primary component carrier). When FIG. 19 is compared with FIG. 26, the type of PUCCH format is not set in FIG. 19, and periodic channel state information is always set using PUCCH format 2, whereas the type of PUCCH format is set in FIG. Is different.

  FIG. 27 is a diagram illustrating a first example of correspondence between channel state information reports and physical uplink control channel resources according to the second embodiment. FIG. 27 shows an example in which there is only a report of report type 1 channel state information corresponding to cell 0 in a certain subframe. In FIG. 27, the mobile station device 1 transmits channel state information using the resource 1 of the PUCCH format 3 corresponding to the cell 0.

FIG. 28 is a diagram illustrating a second example of the correspondence between the channel state information report and the physical uplink control channel resource according to the second embodiment. FIG. 28 shows an example in which a report type 3 channel state information report corresponding to cell 1 and a report type 4 channel state information corresponding to cell 3 collide in a certain subframe. In FIG. 28, the mobile station apparatus 1 drops the report of the channel state information of the report type 4 corresponding to the cell 3 based on the priority of the report type, and uses the resource 2 of the PUCCH format 2 corresponding to the cell 4. The report type 3 channel state information corresponding to the cell 4 is transmitted.

  FIG. 29 is a diagram illustrating a third example of correspondence between channel state information reports and physical uplink control channel resources according to the second embodiment. In a subframe, report of report type 1 channel state information corresponding to cell 0, report of type 3 channel state information corresponding to cell 1, report of type 4 channel state information corresponding to cell 2, and An example in which channel status information of report type 4 corresponding to cell 3 collides is shown. In FIG. 28, the mobile station apparatus 1 performs the report of the report type 1 channel state information corresponding to the cell 0 and the report type 4 of the channel state information report corresponding to the cell 3 based on the report type priority. Drop and transmit the report type 1 channel state information corresponding to cell 1 and the report type 4 channel state information corresponding to cell 2 using resource 1 of PUCCH format 3 corresponding to cell 0.

  In the first embodiment, the base station device 3 sets the PUCCH format 2 resource and one resource of the PUCCH format 3 corresponding to each cell in the mobile station device 1. That is, the base station apparatus 3 needs to set the PUCCH resource in the mobile station apparatus 1 by one more than the number of cells. However, in 2nd Embodiment, the base station apparatus 3 sets the resource of PUCCH format 2 or PUCCH format 3 corresponding to each of a cell. Thereby, the base station apparatus 3 has only to set the same number of PUCCH resources as the number of cells in the mobile station apparatus 1, and can efficiently set the PUCCH resources.

  In addition, you may transmit the report of the channel state information of a different report type corresponding to a certain cell using the resource of PUSCH or PUCCH format 3. That is, in FIG. 24, the processing of step S2400 and step S2402 may be skipped.

  Note that the base station apparatus 3 may set PUCCH format 2 or PUCCH format 3 resources and periodic channel state information reports for each cell group composed of one or a plurality of cells. Thereby, the resource of PUCCH format 3 is matched with transmission of the channel state information of a some cell.

A program that operates in the base station apparatus 3 and the mobile station apparatus 1 related to the present invention is a program (computer function) that controls a CPU (Central Processing Unit) or the like so as to realize the functions of the above-described embodiments related to the present invention Program). Information handled by these devices is temporarily stored in a RAM (Random Access Memory) during the processing, and thereafter, various ROMs such as a flash ROM (Read Only Memory) and H
The data is stored in a DD (Hard Disk Drive), read by the CPU as necessary, and corrected and written.

  In addition, you may make it implement | achieve the mobile station apparatus 1 in the embodiment mentioned above, and a part of base station apparatus 3 with a computer. In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed.

  Here, the “computer system” is a computer system built in the mobile station apparatus 1 or the base station apparatus 3 and 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.

  Furthermore, the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In such a case, a volatile memory inside a computer system serving as a server or a client may be included and a program that holds a program for a certain period of time. 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.

  Further, part or all of the mobile station device 1 and the base station device 3 in the above-described embodiment may be realized as an LSI that is typically an integrated circuit, or may be realized as a chip set. Each functional block of the mobile station device 1 and the base station device 3 may be individually chipped, or a part or all of them may be integrated into a chip. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integrated circuit technology that replaces LSI appears due to progress in semiconductor technology, an integrated circuit based on the technology can also be used.

  As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the above, and various design changes and the like can be made without departing from the scope of the present invention. It is possible to

1 (1A, 1B, 1C) Mobile station apparatus 3 Base station apparatus 101 Upper layer processing section 103 Control section 105 Reception section 107 Transmission section 301 Upper layer processing section 303 Control section 305 Reception section 307 Transmission section 1011 Radio resource control section 1013 Scheduling Information interpreter 1015 Channel state information selector 3011 Radio resource controller 3013 Scheduling unit 3015 Control information generator

Claims (14)

First information indicating resources of a first physical uplink control channel using a first format for reporting the one channel state information, and second for reporting up to a predetermined number of channel state information A receiving unit that receives second information indicating a resource of a second physical uplink control channel using the format of:
In the primary cell, send one first channel state information report on the first physical channel control channel using the first format;
In the primary cell, a mobile station comprising: a transmission unit configured to transmit the second channel state information report up to the predetermined number on the second physical channel control channel using the second format. apparatus. In one subframe, the one first channel state information report in the first physical channel control channel using the first format, and the second physical channel control channel in the second format. If up to the predetermined number of second channel state information reports collide,
The mobile station apparatus according to claim 1, wherein a channel state information report in the first physical channel control channel using the first format is dropped. In the certain subframe, the one first channel state information report in the first physical channel control channel using the first format, and the second physical channel control channel using the second format If the second channel state information reports up to the predetermined number in clash,
Part or all of the one first channel state information report and the second channel state information report up to the predetermined number in the second physical channel control channel using the second format The mobile station apparatus according to claim 1 or 2. The mobile station apparatus according to any one of claims 1 to 3, wherein a physical uplink shared channel is not transmitted by the mobile station apparatus in the certain subframe. When a physical uplink shared channel is transmitted by the mobile station device in the certain subframe, the one first channel state information report and up to the predetermined number of the first channel state information report in the physical uplink shared channel The mobile station apparatus according to claim 2, wherein a part or all of the two channel state information reports are transmitted. First information indicating resources of a first physical uplink control channel using a first format for reporting one channel state information, and second for reporting up to a predetermined number of channel state information A transmitter that transmits the second information indicating the resource of the second physical uplink control channel using the format to the mobile station device;
In the primary cell, one first channel state information report is received from the mobile station apparatus on the first physical channel control channel using the first format,
A receiving unit configured to receive, from the mobile station apparatus, the second channel state information report up to the predetermined number on the second physical channel control channel using the second format in the primary cell. A base station apparatus characterized by the above. In one subframe, the one first channel state information report in the first physical channel control channel using the first format, and the second physical channel control channel in the second format. If up to the predetermined number of second channel state information reports collide,
The base station apparatus according to claim 6, wherein a channel state information report in the first physical channel control channel using the first format is dropped. In the certain subframe, the one first channel state information report in the first physical channel control channel using the first format, and the second physical channel control channel using the second format If the second channel state information reports up to the predetermined number in clash,
Part or all of the one first channel state information report and the second channel state information report up to the predetermined number in the second physical channel control channel using the second format The base station apparatus according to claim 6 or 7. The base station apparatus according to any one of claims 6 to 8, wherein a physical uplink shared channel is not transmitted by the mobile station apparatus in the certain subframe. When a physical uplink shared channel is transmitted by the mobile station device in the certain subframe, the one first channel state information report and up to the predetermined number of the first channel state information report in the physical uplink shared channel The base station apparatus according to claim 7, wherein a part or all of the two channel state information reports are received. A wireless communication method used for a mobile station device,
First information indicating resources of a first physical uplink control channel using a first format for reporting the one channel state information, and second for reporting up to a predetermined number of channel state information Receiving second information indicating resources of a second physical uplink control channel using the format of:
In the primary cell, send one first channel state information report on the first physical channel control channel using the first format;
The wireless communication method characterized by transmitting up to the predetermined number of second channel state information reports on the second physical channel control channel using the second format in the primary cell. A wireless communication method used for a base station device,
First information indicating resources of a first physical uplink control channel using a first format for reporting one channel state information, and second for reporting up to a predetermined number of channel state information Transmitting second information indicating the resource of the second physical uplink control channel using the format to the mobile station apparatus;
In the primary cell, one first channel state information report is received from the mobile station apparatus on the first physical channel control channel using the first format,
In the primary cell, the second physical channel control channel using the second format receives up to the predetermined number of second channel state information reports from the mobile station apparatus. Method. First information indicating resources of a first physical uplink control channel using a first format for reporting the one channel state information, and second for reporting up to a predetermined number of channel state information A function of receiving second information indicating a resource of a second physical uplink control channel using the format of:
A function of transmitting one first channel state information report in the first physical channel control channel using the first format in a primary cell;
In the primary cell, the mobile device has a series of functions including a function of transmitting up to the predetermined number of second channel state information reports on the second physical channel control channel using the second format. An integrated circuit that is characterized by its function. First information indicating resources of a first physical uplink control channel using a first format for reporting one channel state information, and second for reporting up to a predetermined number of channel state information A function of transmitting second information indicating resources of the second physical uplink control channel using the format to the mobile station apparatus;
In the primary cell, a function of receiving one first channel state information report from the mobile station device on the first physical channel control channel using the first format;
A function of receiving, from the mobile station apparatus, up to the predetermined number of second channel state information reports on the second physical channel control channel using the second format in the primary cell. An integrated circuit characterized by having a base station device perform its function.

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