Terminal device, base station device, and communication method

Abstract

A terminal device that uses multiple uplink cells to perform CSI reporting, wherein, when the total number of one or more first channel state information reports and multiple second channel state information reports in a first subframe exceeds a first specified number, a second specified number of channel state information reports among the one or more first channel state information reports and the multiple second channel state information reports is not updated, and the second specified number is the number obtained by subtracting the first specified number from the total number of the one or more first channel state information reports and the multiple second channel state information reports.

Description

Technical Field

[0001] Several aspects of the present invention relate to a terminal device, a base station device, a communication method, and an integrated circuit.

[0002] This application claims priority based on Japanese Patent Application No. 2015-155578 filed in Japan on August 6, 2015, the contents of which are incorporated herein by reference. Background Art

[0003] In the 3rd Generation Partnership Project (3GPP), research has been conducted on 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)") (Non-Patent Document 1, Non-Patent Document 2, Non-Patent Document 3, Non-Patent Document 4, and Non-Patent Document 5). In LTE, the base station device is also called eNodeB (evolved NodeB), and the terminal device is called user equipment (User Equipment: UE) or mobile station device. LTE is a cellular communication system in which the area covered by the base station device is configured in the form of multiple cells. Here, a single base station device can manage multiple cells.

[0004] LTE corresponds to time division duplex (TDD). LTE that adopts the TDD method is also called TD-LTE or LTE TDD. In TDD, uplink signals and downlink signals are time-division multiplexed. In addition, LTE corresponds to frequency division duplex (FDD).

[0005] 3GPP has standardized carrier aggregation (CA), which allows a terminal device to simultaneously transmit and / or receive signals in five or fewer serving cells (component carriers: CCs).

[0006] In addition, 3GPP is studying the possibility of a terminal device transmitting and / or receiving simultaneously in more than five groups of service cells (component carriers). Furthermore, the possibility of a terminal device transmitting via a physical uplink control channel (PUCCH) in a secondary cell that is a service cell other than a primary cell is also being studied (Non-Patent Document 6).

[0007] In addition, in 3GPP, a study is being conducted on using a new format of the PUCCH and / or a physical uplink shared channel (Physical Uplink Shared CHannel: PUSCH) to simultaneously transmit channel state information (Channel State Information: CSI) of multiple serving cells.

[0008] Prior art literature

[0009] Non-patent literature

[0010] Non-patent document 1: "3GPP TS 36.211 V12.4.0 (2014-12) Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and modulation (Release 12)", 6th-January 2015.

[0011] Non-patent document 2: "3GPP TS 36.212 V12.3.0 (2014-12) Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding (Release 12)", 6th-January 2015.

[0012] Non-patent document 3: "3GPP TS 36.213 V12.4.0 (2014-12) Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 12)", 7th-January 2015.

[0013] Non-patent document 4: "3GPP TS 36.321 V12.4.0 (2014-12) Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification (Release 12)", 5th-January 2015.

[0014] Non-patent document 5: "3GPP TS 36.331 V12.4.1 (2014-12) Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification (Release 12)", 7th-January 2015.

[0015] Non-patent document 6: "New WI proposal: LTE Carrier Aggregation EnhancementBeyond 5Carriers", RP-142286, Nokia Corporation, NTT DoCoMo Inc., Nokia Networks, 3GPP TSG RAN Meeting #66, Hawaii, United States of America, 8th-11th December 2014. Summary of the invention

[0016] Problem that the invention aims to solve

[0017] Several aspects of the present invention aim to provide a terminal device, a base station device, a communication method, and an integrated circuit, in which a base station device and a terminal device can efficiently communicate in the wireless communication system as described above.

[0018] Technical Solution

[0019] (1) In order to achieve the above-mentioned object, the scheme of the present invention adopts the scheme described below. That is, the terminal device in one scheme of the present invention may be the following terminal device, which comprises: a receiving unit, which receives first information of one or more first channel state information reports on a physical uplink channel in a first service cell from a base station device, and receives second information of multiple second channel state information reports on a physical uplink channel in a second service cell from the base station device; and a sending unit, which performs the one or more first channel state information reports and the multiple second channel state information reports, and does not update the one or more first channel state information reports and the second specified number of channel state information reports in the multiple second channel state information reports when the total number of the one or more first channel state information reports and the multiple second channel state information reports in the first subframe exceeds a first specified number, the second specified number being the number obtained by subtracting the first specified number from the total number of the one or more first channel state information reports and the multiple second channel state information reports.

[0020] (2) In addition, the terminal device in one embodiment of the present invention may be a terminal device comprising: a receiving unit, which receives first information for sending one or more first channel state information corresponding to one or more first channel state information processing on a physical uplink channel in a first service cell from a base station device, and receives second information for sending multiple second channel state information corresponding to multiple second channel state information processing on a physical uplink channel in a second service cell from the base station device; and a sending unit, which sends the one or more first channel state information and the multiple second channel state information, and does not update the channel state information corresponding to a second prescribed number of channel state information processing among the one or more first channel state information processing and the multiple second channel state information processing when the total number of the one or more first channel state information processing and the multiple second channel state information processing exceeds a first prescribed number in a first subframe in which a conflict occurs between the sending of the one or more first channel state information and the sending of the multiple second channel state information. The second prescribed number is a number obtained by subtracting the first prescribed number from the sum of the number of the one or more first channel state information processing and the number of the multiple second channel state information processing.

[0021] (3) In addition, a communication method in one embodiment of the present invention may be a communication method of a terminal device, which receives first information of one or more first channel state information reports on a physical uplink channel in a first service cell from a base station device, and receives second information of multiple second channel state information reports on a physical uplink channel in a second service cell from the base station device, performs the one or more first channel state information reports, and performs the multiple second channel state information reports, and when the total number of the one or more first channel state information reports and the multiple second channel state information reports in a first subframe exceeds a first prescribed number, does not update the one or more first channel state information reports and the second prescribed number of channel state information reports in the multiple second channel state information reports, the second prescribed number being the number obtained by subtracting the first prescribed number from the sum of the number of the one or more first channel state information reports and the number of the multiple second channel state information reports.

[0022] (4) In addition, a communication method in one embodiment of the present invention may be a communication method of a terminal device as follows, receiving first information for sending one or more first channel state information corresponding to one or more first channel state information processing on a physical uplink channel in a first service cell from a base station device, and receiving second information for sending multiple second channel state information corresponding to multiple second channel state information processing on a physical uplink channel in a second service cell from the base station device, sending the one or more first channel state information, and sending the multiple second channel state information, and in a first subframe in which the sending of the one or more first channel state information conflicts with the sending of the multiple second channel state information, if the total number of the one or more first channel state information processing and the multiple second channel state information processing exceeds a first prescribed number, not updating the channel state information corresponding to a second prescribed number of channel state information processing among the one or more first channel state information processing and the multiple second channel state information processing, wherein the second prescribed number is a number obtained by subtracting the first prescribed number from the sum of the number of the one or more first channel state information processing and the number of the multiple second channel state information processing.

[0023] (5) In addition, the integrated circuit in one embodiment of the present invention may be an integrated circuit mounted on a terminal device, comprising: a receiving unit, which receives first information of one or more first channel state information reports on a physical uplink channel in a first service cell from a base station device, and receives second information of multiple second channel state information reports on a physical uplink channel in a second service cell from the base station device; and a sending unit, which performs the one or more first channel state information reports and the multiple second channel state information reports, and does not update the one or more first channel state information reports and the second specified number of channel state information reports in the multiple second channel state information reports when the total number of the one or more first channel state information reports and the multiple second channel state information reports in a first subframe exceeds a first specified number, wherein the second specified number is a number obtained by subtracting the first specified number from the sum of the number of the one or more first channel state information reports and the number of the multiple second channel state information reports.

[0024] (6) In addition, the integrated circuit in one embodiment of the present invention may be an integrated circuit mounted on a terminal device, comprising: a receiving unit, which receives first information for sending one or more first channel state information corresponding to one or more first channel state information processing on a physical uplink channel in a first service cell from a base station device, and receives second information for sending multiple second channel state information corresponding to multiple second channel state information processing on a physical uplink channel in a second service cell from the base station device; and a sending unit, which sends the one or more first channel state information and the multiple second channel state information, and does not update the channel state information of the one or more first channel state information processing and the multiple second channel state information processing corresponding to a second specified number of channel state information processing in the one or more first channel state information processing and the multiple second channel state information processing when the total number of the one or more first channel state information processing and the multiple second channel state information processing exceeds a first specified number in a first subframe in which the sending of the one or more first channel state information and the sending of the multiple second channel state information conflict. The second specified number is a number obtained by subtracting the first specified number from the total number of the one or more first channel state information processing and the multiple second channel state information processing.

[0025] Beneficial Effects

[0026] According to some aspects of the present invention, a base station device and a terminal device can communicate efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A diagram showing the concept of a wireless communication system in this embodiment.

[0028] Figure 2 A diagram showing the configuration of time slots in this embodiment.

[0029] Figure 3A This is the first figure for explaining the PUCCH cell group in this embodiment.

[0030] Figure 3B The second figure is used to illustrate the PUCCH cell group in this embodiment.

[0031] Figure 3C The third figure is used to illustrate the PUCCH cell group in this embodiment.

[0032] Figure 4 A diagram showing an example of a method of RI reporting and CQI reporting in this embodiment.

[0033] Figure 5This is a flowchart showing an example of the operation of the terminal device 1 when a plurality of PUCCHs collide in the present embodiment.

[0034] Figure 6 This is a diagram for explaining an example of a discarding rule when a plurality of CSI reports conflict in this embodiment.

[0035] Figure 7 This is a flowchart showing an example of the operation of the terminal device 1 when a plurality of CSI reports collide in the present embodiment.

[0036] Figure 8 This is a diagram for explaining an example in which the terminal device 1 in this embodiment performs CSI reporting in a plurality of uplink cells.

[0037] Fig. 9 It is a schematic block diagram showing the configuration of the terminal device 1 in this embodiment.

[0038] Fig.10 It is a schematic block diagram showing the configuration of the base station device 3 in this embodiment. DETAILED DESCRIPTION

[0039] Hereinafter, embodiments of the present invention will be described.

[0040] Figure 1 FIG. 1 is a conceptual diagram of a wireless communication system in this embodiment. Figure 1 In the wireless communication system, there are terminal devices 1A to 1C and a base station device 3. Hereinafter, the terminal devices 1A to 1C are also referred to as terminal devices 1.

[0041] The physical channels and physical signals in this embodiment are described.

[0042] exist Figure 1 In the uplink wireless communication from the terminal device 1 to the base station device 3, the following uplink physical channels are used. Here, the uplink physical channels are used to transmit information output from the upper layer.

[0043] PUCCH (Physical Uplink Control Channel)

[0044] PUSCH (Physical Uplink Shared Channel)

[0045] PRACH (Physical Random Access Channel)

[0046] PUCCH is used to send uplink control information (Uplink Control Information: UCI). Here, the uplink control information may include channel state information (CSI: Channel State Information) for indicating the state of the downlink channel. In addition, the uplink control information may include a scheduling request (SR: Scheduling Request) for requesting UL-SCH resources. In addition, the uplink control information may include HARQ-ACK (Hybrid Automatic Repeat request ACKnowledgement: Hybrid Automatic Repeat request ACKnowledgement). HARQ-ACK can represent HARQ-ACK for downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC PDU, Downlink-Shared Channel: DL-SCH (Downlink Shared Channel), Physical Downlink Shared Channel: PDSCH (Physical Downlink Shared Channel)).

[0047] That is, HARQ-ACK can represent ACK (acknowledgement) or NACK (negative-acknowledgement). Here, HARQ-ACK is also referred to as ACK / NACK, HARQ feedback, HARQ response, HARQ information, or HARQ control information.

[0048] The channel state information (CSI) is composed of a channel quality indicator (Channel Quality Indicator: CQI), a precoding matrix indicator (Precoding Matrix Indicator: PMI), a precoding type indicator (Precoding Type Indicator: PTI) and / or a rank indicator (Rank Indicator: RI).

[0049] The channel state information may be reported periodically from the terminal device 1 to the base station device 3 at a predetermined period, or may be reported aperiodically. The reported CSI is referred to as a CSI report, the CSI reported periodically is referred to as periodic channel state information (periodic CSI: periodic CSI) or a periodic CSI report (periodic CSIreport), and the CSI reported aperiodically is referred to as aperiodic channel state information (aperiodic CSI: aperiodic CSI) or an aperiodic CSI report (aperiodic CSI report).

[0050] PUSCH is used to transmit uplink data (Uplink-Shared Channel: UL-SCH). In addition, PUSCH can be used to transmit HARQ-ACK and / or CSI together with uplink data. In addition, PUSCH can also be used to transmit only CSI or only HARQ-ACK and CSI. That is, PUSCH can also be used to transmit only uplink control information.

[0051] Here, the base station device 3 and the terminal device 1 exchange (send / receive) signals at the higher layer. For example, the base station device 3 and the terminal device 1 can send / receive RRC signaling (also called RRC message: Radio Resource Control message, RRC information: Radio Resource Control information) at the radio resource control (RRC: Radio Resource Control) layer. In addition, the base station device 3 and the terminal device 1 can also send / receive MAC control elements at the MAC (Medium Access Control: Media Access Control) layer. Here, RRC signaling and / or MAC control elements are also referred to as upper layer signals (higher layersignaling: upper layer signaling).

[0052] PUSCH can be used to send RRC signaling and MAC control elements. Here, the RRC signaling sent from the base station device 3 can be common signaling for multiple terminal devices 1 in the cell. In addition, the RRC signaling sent from the base station device 3 can also be dedicated signaling (also called dedicated signaling) for a certain terminal device 1. That is, dedicated signaling can also be used to send terminal device-specific (UE-specific) information to a certain terminal device 1.

[0053] PRACH is used to transmit a random access preamble. PRACH can be used to indicate an initial connection establishment procedure, a handover procedure, a connection re-establishment procedure, synchronization (timing adjustment) for uplink transmission, and a request for PUSCH resources.

[0054] exist Figure 1 In the uplink wireless communication, the following uplink physical signal is used. Here, the uplink physical signal is not used to send information output from the upper layer, but is used by the physical layer.

[0055] Uplink Reference Signal (UL RS)

[0056] In this embodiment, the following two types of uplink reference signals are used.

[0057] DMRS (Demodulation Reference Signal)

[0058] SRS (Sounding Reference Signal)

[0059] DMRS is related to the transmission of PUSCH or PUCCH. DMRS is time-multiplexed with PUSCH or PUCCH. The base station device 3 uses DMRS to perform propagation path correction of PUSCH or PUCCH. Hereinafter, transmitting PUSCH and DMRS together is referred to as transmitting PUSCH. Hereinafter, transmitting PUCCH and DMRS together is referred to as transmitting PUCCH.

[0060] The SRS is not related to the transmission of the PUSCH or the PUCCH. The base station device 3 uses the SRS to measure the uplink channel state.

[0061] exist Figure 1 In the downlink wireless communication from the base station device 3 to the terminal device 1, the following downlink physical channels are used. Here, the downlink physical channel is used to transmit information output from the upper layer.

[0062] PBCH (Physical Broadcast Channel)

[0063] PCFICH (Physical Control Format Indicator Channel)

[0064] PHICH (Physical Hybrid automatic repeat request Indicator Channel)

[0065] PDCCH (Physical Downlink Control Channel)

[0066] EPDCCH (Enhanced Physical Downlink Control Channel)

[0067] PDSCH (Physical Downlink Shared Channel)

[0068] PMCH (Physical Multicast Channel)

[0069] The PBCH is used to broadcast a master information block (Master Information Block: MIB, Broadcast Channel: BCH) commonly used in the terminal devices 1 .

[0070] The PCFICH is used to transmit information indicating a region (OFDM symbol) used for transmission of the PDCCH.

[0071] PHICH is used to send a HARQ indicator (HARQ feedback, response information) indicating ACK (ACKnowledgement: positive response) or NACK (Negative ACKnowledgement: negative response) for uplink data (Uplink Shared Channel: UL-SCH) received by the base station device 3 .

[0072] PDCCH and EPDCCH are used to transmit downlink control information (Downlink Control Information: DCI). Here, various DCI formats are defined for transmitting downlink control information. That is, a field for downlink control information is defined as a DCI format and mapped to information bits.

[0073] For example, as a DCI format for downlink, a DCI format (eg, DCI format 1A, DCI format 1C) for scheduling one PDSCH (transmission of one downlink transport block) in one cell may be defined.

[0074] Here, the DCI format for the downlink includes information related to the scheduling of the PDSCH. For example, the DCI format for the downlink includes downlink control information such as the carrier indicator field (CIF), information related to resource block allocation, information related to the MCS (Modulation and Coding Scheme), and information for indicating the number of transmission layers in the PDSCH transmission (Precoding information). Here, the DCI format for the downlink is also referred to as a downlink grant or a downlink assignment.

[0075] Furthermore, for example, as a DCI format for uplink, a DCI format (eg, DCI format 0, DCI format 4) for scheduling one PUSCH (transmission of one uplink transport block) in one cell is defined.

[0076] Here, the DCI format for the uplink includes information related to the scheduling of PUSCH. For example, the DCI format for the uplink includes: a carrier indicator field (CIF: Carrier Indicator Field), information related to resource block assignment and / or hopping resource allocation (Resource block assignment and / or hopping resource allocation), information related to MCS and / or redundancy version (Modulation and coding scheme and / or redundancy version), and information for indicating the number of transmission layers in PUSCH transmission (Precoding information and number of layers) and other downlink control information. Here, the DCI format for the uplink is also referred to as an uplink grant (uplink grant) or an uplink assignment (Uplink assignment).

[0077] When downlink allocation is used to schedule PDSCH resources, terminal device 1 can receive downlink data with the scheduled PDSCH. In addition, when uplink grant is used to schedule PUSCH resources, terminal device 1 can send uplink data and / or uplink control information with the scheduled PUSCH.

[0078] In the present embodiment, PDCCH and EPDCCH are also simply collectively referred to as PDCCH. In the present embodiment, PDCCH candidates and EPDCCH candidates are also simply collectively referred to as PDCCH candidates.

[0079] Here, in the transmission of downlink control information (transmission performed through PDCCH), the base station device 3 uses the RNTI assigned to the terminal device 1. Specifically, CRC (Cyclic Redundancy check) parity bits are attached to the DCI format (which may be DCI: downlink control information), and after attachment, the CRC parity bits are scrambled by the RNTI. Here, the CRC parity bits attached to the DCI format can be obtained from the payload of the corresponding DCI format.

[0080] The terminal device 1 attempts to decode the DCI format to which the CRC parity bits scrambled by the RNTI are attached, and detects the DCI format to which the CRC is successfully performed as the DCI format sent to its own device (also called blind decoding). That is, the terminal device 1 can detect the PDCCH to which the CRC scrambled by the RNTI is attached. In addition, the terminal device 1 can also detect the PDCCH of the DCI format to which the CRC parity bits scrambled by the RNTI are attached.

[0081] Here, RNTI may include C-RNTI (Cell-Radio Network Temporary Identifier). C-RNTI is a unique identifier for terminal device 1 and is used for RRC connection and scheduling identification. In addition, C-RNTI can be used for dynamically scheduled unicast transmission.

[0082] In addition, the RNTI may include an SPS C-RNTI (Semi-Persistent Scheduling C-RNTI). The SPS C-RNTI is a unique identifier for the terminal device 1 and is used for semi-persistent scheduling. In addition, the SPS C-RNTI may be used for unicast transmission of semi-persistently scheduling.

[0083] In addition, the RNTI may include a Temporary C-RNTI. Here, the Temporary C-RNTI is a unique identifier for the preamble sent by the terminal device 1 and is used during the contention random access procedure. In addition, the Temporary C-RNTI can be used for dynamically scheduled transmissions.

[0084] PDSCH is used to send downlink data (Downlink Shared Channel: DL-SCH). In addition, PDSCH is used to send system information messages. Here, the system information message can be cell-specific (cell-specific) information. In addition, the system information is included in the RRC signaling. In addition, PDSCH is used to send RRC signaling and MAC control elements.

[0085] PMCH is used to send multicast data (Multicast Channel: MCH).

[0086] exist Figure 1 In the wireless communication of downlink, the following downlink physical signal is used. Here, the downlink physical signal is not used to transmit information output from the upper layer, but is used by the physical layer.

[0087] Synchronization signal (SS)

[0088] Downlink Reference Signal (DL RS)

[0089] The synchronization signal is used to synchronize the frequency domain and time domain of the downlink to the terminal device 1. In the TDD scheme, the synchronization signal is arranged in subframes 0, 1, 5, and 6 in the radio frame. In the FDD scheme, the synchronization signal is arranged in subframes 0 and 5 in the radio frame.

[0090] The downlink reference signal is used for the terminal device 1 to perform propagation path correction of the downlink physical channel. Here, the downlink reference signal is used for the terminal device 1 to calculate the CSI of the downlink.

[0091] In this embodiment, the following five types of downlink reference signals are used.

[0092] CRS (Cell-specific Reference Signal)

[0093] URS (UE-specific Reference Signal) related to PDSCH

[0094] DMRS (Demodulation Reference Signal) related to EPDCCH

[0095] NZP CSI-RS (Non-Zero Power Chanel State Information-ReferenceSignal: Non-zero power channel state information reference signal)

[0096] ZP CSI-RS (Zero Power Chanel State Information-Reference Signal)

[0097] MBSFN RS (Multimedia Broadcast and Multicast Service over SingleFrequency Network Reference signal)

[0098] PRS (Positioning Reference Signal)

[0099] Here, the downlink physical channel and the downlink physical signal are collectively referred to as the downlink signal. In addition, the uplink physical channel and the uplink physical signal are collectively referred to as the uplink signal. The downlink physical channel and the uplink physical channel are collectively referred to as the physical channel. The downlink physical signal and the uplink physical signal are collectively referred to as the physical signal.

[0100] BCH, MCH, UL-SCH and DL-SCH are transport channels. The channels used in the Medium Access Control (MAC) layer are called transport channels. The unit of the transport channel used in the MAC layer is also called a transport block (TB) or a MAC PDU (Protocol Data Unit). The MAC layer controls HARQ (Hybrid Automatic Repeat reQuest) according to the transport block. The transport block is the unit of data forwarded (delivered) by the MAC layer to the physical layer. The transport block is mapped to the codeword at the physical layer and the encoding process is performed according to the codeword.

[0101] In addition, the terminal device 1 switches and uses a plurality of different transmission modes of transmission methods that can be used, such as single antenna transmission, transmission diversity, MIMO (Multiple Input Multiple Output), etc. For example, the transmission mode uses a transmission mode indicated by the base station from transmission modes 1 to 10. For example, transmission mode 10 is a transmission mode in which multiple CSI processes can be set.

[0102] The following describes carrier aggregation.

[0103] In this embodiment, one or more serving cells may be set for the terminal device 1. A technology in which the terminal device 1 communicates via a plurality of serving cells is called carrier aggregation or cell aggregation.

[0104] Here, the present embodiment may also be applied to each of one or more service cells set for the terminal device 1. In addition, the present embodiment may also be applied to a part of one or more service cells set for the terminal device 1. In addition, the present embodiment may also be applied to each of the groups of one or more service cells set for the terminal device 1 described later (for example, PUCCH cell groups). In addition, the present embodiment may also be applied to a part of the group of one or more service cells set for the terminal device 1.

[0105] In addition, in this embodiment, TDD (Time Division Duplex) and / or FDD (Frequency Division Duplex) may also be applied. Here, in the case of carrier aggregation, TDD or FDD may be applied to one service cell or all multiple service cells. In addition, in the case of carrier aggregation, service cells to which TDD is applied and service cells to which FDD is applied may also be aggregated. Here, the frame structure corresponding to FDD is also referred to as frame structure type 1 (Frame structure type 1). In addition, the frame structure corresponding to TDD is also referred to as frame structure type 2 (Frame structure type 2).

[0106] Here, the one or more service cells configured include a primary cell and one or more secondary cells. The primary cell may be a service cell that has performed an initial connection establishment process, a service cell that has started a connection re-establishment process, or a cell indicated as a primary cell during a handover process. Here, the secondary cell may be configured at or after the time when the RRC connection is established.

[0107] Here, in the downlink, the carrier corresponding to the serving cell is referred to as a downlink component carrier. In addition, in the uplink, the carrier corresponding to the serving cell is referred to as an uplink component carrier. In addition, the downlink component carrier and the uplink component carrier are collectively referred to as component carriers.

[0108] In addition, the terminal device 1 can simultaneously transmit and / or receive multiple physical channels in one or more serving cells (component carriers). Here, one physical channel can be transmitted in one serving cell (component carrier) among multiple serving cells (component carriers).

[0109] Here, the primary cell is used for transmission of PUCCH. In addition, the primary cell is not disabled. In addition, cross-carrier scheduling will not be applied to the primary cell. That is, the primary cell always uses the PDCCH in the primary cell for scheduling.

[0110] In addition, when PDCCH is set in a certain secondary cell (which can be monitored by PDCCH), cross-carrier scheduling may not be applied to the certain secondary cell. That is, in this case, the secondary cell can always use the PDCCH in the secondary cell for scheduling. In addition, when PDCCH is not set in a certain secondary cell (which can be monitored by PDCCH), cross-carrier scheduling is applied, and the secondary cell can always use the PDCCH in one other serving cell for scheduling.

[0111] Here, in this embodiment, the secondary cell used for sending PUCCH is referred to as PUCCH secondary cell and special secondary cell. In addition, the secondary cell not used for sending PUCCH is referred to as non-PUCCH secondary cell, non-specific secondary cell, non-PUCCH service cell and non-PUCCH cell. In addition, the primary cell and PUCCH secondary cell are collectively referred to as PUCCH service cell and PUCCH cell.

[0112] Here, the PUCCH serving cell (primary cell, PUCCH secondary cell) always has a downlink component carrier and an uplink component carrier. In addition, in the PUCCH serving cell (primary cell, PUCCH secondary cell), PUCCH resources are configured.

[0113] Furthermore, a non-PUCCH serving cell (non-PUCCH secondary cell) may have only a downlink component carrier. Furthermore, a non-PUCCH serving cell (non-PUCCH secondary cell) may have a downlink component carrier as well as an uplink component carrier.

[0114] The terminal device 1 can transmit via PUCCH in the PUCCH serving cell. That is, the terminal device 1 can transmit via PUCCH in the primary cell. In addition, the terminal device 1 can transmit via PUCCH in the PUCCH secondary cell. That is, the terminal device 1 does not transmit via PUCCH in the non-specific secondary cell.

[0115] Here, the PUCCH secondary cell may be defined as a primary cell and a serving cell that is not a secondary cell.

[0116] That is, the PUCCH secondary cell may be used for transmission of the PUCCH. Here, the PUCCH secondary cell may not be disabled. In addition, as described later, the PUCCH secondary cell may be activated and / or disabled.

[0117] In addition, cross-carrier scheduling may not be applied to the PUCCH secondary cell. That is, the PUCCH secondary cell may always use the PDCCH in the PUCCH secondary cell for scheduling. Here, cross-carrier scheduling may be applied to the PUCCH secondary cell. That is, the PUCCH secondary cell may use the PDCCH in another secondary cell for scheduling.

[0118] For example, when PDCCH is set in the PUCCH secondary cell (which can be monitoring of PDCCH), cross-carrier scheduling may not be applied to the PUCCH secondary cell. That is, in this case, the PUCCH secondary cell can always use the PDCCH in the PUCCH secondary cell for scheduling. In addition, when PDCCH is not set in the PUCCH secondary cell (which can be monitoring of PDCCH), cross-carrier scheduling is applied, and the PUCCH secondary cell can always use the PDCCH in another serving cell for scheduling.

[0119] Here, a link (linking) may be defined between an uplink (e.g., an uplink component carrier) and a downlink (e.g., a downlink component carrier). That is, a service cell for downlink allocation (a service cell that performs transmission on the PDSCH (downlink transmission) scheduled by downlink allocation) may be identified based on the link between the uplink and the downlink. In addition, a service cell for uplink authorization (a service cell that performs transmission on the PUSCH (uplink transmission) scheduled by uplink authorization) may also be identified based on the link between the uplink and the downlink. Here, there is no carrier indicator field in the downlink allocation or the uplink.

[0120] That is, the downlink allocation received in the primary cell may correspond to the transmission of the downlink in the primary cell. In addition, the uplink grant received in the primary cell may correspond to the transmission of the uplink in the primary cell. In addition, the downlink allocation received in the PUCCH secondary cell may correspond to the transmission of the downlink in the PUCCH secondary cell. In addition, the uplink grant received in the PUCCH secondary cell may correspond to the transmission of the uplink in the PUCCH secondary cell.

[0121] In addition, a downlink allocation received in a certain secondary cell (PUCCH secondary cell and / or non-PUCCH secondary cell) may correspond to the transmission of a downlink in the certain secondary cell. In addition, an uplink grant received in a certain secondary cell (PUCCH secondary cell and / or non-PUCCH secondary cell) may correspond to the transmission of an uplink in the certain secondary cell.

[0122] Here, the base station device 3 may use the upper layer signal to set one or more serving cells. For example, in order to form a set of multiple serving cells together with the primary cell, one or more secondary cells may be set. Here, the serving cells set by the base station device 3 may include a PUCCH secondary cell.

[0123] That is, the PUCCH secondary cell may be configured by the base station device 3. For example, the base station device 3 may transmit a higher layer signal including information (index) for configuring the PUCCH secondary cell.

[0124] In addition, the base station device 3 can use upper layer signals (such as MAC control elements) to activate or deactivate one or more serving cells. For example, the activation or deactivation mechanism can be based on a combination of a MAC control element and a timer associated with the deactivation.

[0125] Here, the PUCCH secondary cell may be included in the secondary cell activated or deactivated by the base station device 3. That is, the base station device 3 may use a single activation / deactivation command to individually activate or deactivate multiple secondary cells including the PUCCH secondary cell. That is, the base station device 3 may use a MAC control element to send a single command for activating or deactivating the secondary cell.

[0126] In addition, a common value may be set for each terminal device 1 by an upper layer (e.g., an RRC layer) as the value of a timer associated with disabling. In addition, a timer associated with disabling (the value of the timer) may be saved (applied) in each secondary cell. Here, a timer associated with disabling (the value of the timer) may also be saved only in each non-PUCCH secondary cell. That is, the terminal device 1 may cause the timer associated with disabling to not be applied to the PUCCH secondary cell but to be retained (applied) only in each non-PUCCH secondary cell.

[0127] In addition, a timer associated with the disabling of the PUCCH secondary cell and a timer associated with the disabling of the non-PUCCH secondary cell may be set separately. For example, the base station device 3 may send an upper layer signal including information for setting a timer associated with the disabling of the PUCCH secondary cell. In addition, the base station device 3 may also send an upper layer signal including information for setting a timer associated with the disabling of the non-PUCCH secondary cell.

[0128] The following describes the configuration of time slots in this embodiment.

[0129] Figure 2 FIG. 2 is a diagram showing the structure of time slots in this embodiment. Figure 2 In the figure, the horizontal axis represents the time axis and the vertical axis represents the frequency axis. Here, a normal CP (normal Cyclic Prefix) can be applied to an OFDM symbol. In addition, an extended CP (extended Cyclic Prefix) can also be applied to an OFDM symbol. In addition, a physical signal or a physical channel transmitted in each time slot is represented by a resource grid.

[0130] Here, in the downlink, a resource grid may be defined by a plurality of subcarriers and a plurality of OFDM symbols. In addition, in the uplink, a resource grid may also be defined by a plurality of subcarriers and a plurality of SC-FDMA symbols. In addition, the number of subcarriers constituting one time slot may depend on the bandwidth of the cell. The number of OFDM symbols or SC-FDMA symbols constituting one time slot may be 7. Here, each element in the resource grid is referred to as a resource element. In addition, the number of subcarriers and the number of OFDM symbols or SC-FDMA symbols may be used to identify the resource element.

[0131] Here, the resource block can be used to express the mapping of resource elements to a certain physical channel (PDSCH or PUSCH, etc.). In addition, the resource block can be defined as a virtual resource block and a physical resource block. A certain physical channel can be first mapped to a virtual resource block. After that, the virtual resource block can also be mapped to the physical resource block. A physical resource block can be defined based on 7 consecutive OFDM symbols or SC-FDMA symbols in the time domain and 12 consecutive subcarriers in the frequency domain. Therefore, a physical resource block can be composed of (7×12) resource elements. In addition, a physical resource block can correspond to a time slot in the time domain and 180kHz in the frequency domain. In addition, the physical resource blocks can be numbered starting from 0 in the frequency domain.

[0132] Figure 3A to Figure 3C A diagram for explaining the cell group in this embodiment. Figure 3A to Figure 3C Three examples (Example (a): Example (a), Example (b): Example (b), Example (c): Example (c)) are shown as examples of setting (composition, definition) of PUCCH cell groups. Here, in this embodiment, a group of one or more service cells is referred to as a PUCCH cell group. The PUCCH cell group can be a group related to transmission via PUCCH (sending uplink control information via PUCCH). Here, a certain service cell belongs to any PUCCH cell group. Here, the PUCCH cell group can of course be set to be related to Figure 3A to Figure 3C The examples shown are different.

[0133] Here, the PUCCH cell group may be set by the base station device 3. For example, the base station device 3 may send an upper layer signal including information (which may be an index or a cell group index) for setting the PUCCH cell group.

[0134] Here, of course, the present embodiment can also be applied to a group of one or more service cells that are different from the above-mentioned PUCCH cell group. For example, the base station device 3 can set a group of one or more service cells corresponding to the service cell indicated using the carrier indicator field (CIF). That is, the base station device 3 can set a group of one or more service cells in association with the transmission of the uplink. In addition, the base station device 3 can also set a group of one or more service cells in association with the transmission of the downlink.

[0135] Hereinafter, the group of one or more service cells set by the base station device 3 will also be referred to as a cell group. That is, the PUCCH cell group is included in the cell group. Here, the base station device 3 and / or the terminal device 1 can respectively perform the actions described in this embodiment in the cell group. That is, the base station device 3 and / or the terminal device 1 can perform the actions described in this embodiment in a cell group.

[0136] Here, for example, the base station device 3 and / or the terminal device 1 can support carrier aggregation of up to 32 downlink component carriers (downlink cells, up to 32 downlink component carriers). That is, the base station device 3 and / or the terminal device 1 can simultaneously send and / or receive through multiple physical channels in up to 32 service cells. Here, the number of uplink component carriers can be less than the number of downlink component carriers.

[0137] In addition, the base station device 3 and / or the terminal device 1 can, for example, support carrier aggregation of up to 5 downlink component carriers (downlink cells, up to 5 downlink component carriers). That is, the base station device 3 and / or the terminal device 1 can simultaneously send and / or receive through multiple physical channels in less than 5 service cells. Here, the number of uplink component carriers can be less than the number of downlink component carriers.

[0138] Figure 3A FIG. 2 shows a case where a first cell group and a second cell group are set as a cell group (here, a PUCCH cell group). Figure 3A In the embodiment, the base station device 3 can send a downlink signal in the first cell group, and the terminal device 3 can send an uplink signal in the first cell group (uplink control information can also be sent through the PUCCH in the first cell group). For example, when 20 service cells (downlink component carriers, downlink cells) are set or activated in the first cell group, the base station device 3 and the terminal device 1 can send / receive uplink control information for the 20 downlink component carriers.

[0139] That is, the terminal device 1 can send HARQ-ACK corresponding to 20 downlink component carriers (HARQ-ACK for transmission by PDSCH, HARQ-ACK for transport blocks). In addition, the terminal device 1 can send CSI corresponding to 20 downlink component carriers. In addition, the terminal device 1 can send SR by cell group. Similarly, the base station device 3 and the terminal device 1 can send / receive uplink control information in the second cell group.

[0140] Similarly, the base station device 3 and the terminal device 1 can also be Figure 3B The cell group is set as shown and uplink control information is sent / received. In addition, the base station device 3 and the terminal device 1 can also be as shown Figure 3C The cell group is set up as shown and uplink control information is sent / received.

[0141] Here, a cell group (e.g., a PUCCH cell group) may include at least one serving cell (e.g., a PUCCH serving cell). In addition, a cell group (e.g., a PUCCH cell group) may also include only one serving cell (e.g., only a PUCCH serving cell). In addition, for example, a PUCCH cell group may also include one PUCCH serving cell and one or more non-PUCCH serving cells.

[0142] Here, the cell group including the primary cell is referred to as the primary cell group. In addition, the cell group not including the primary cell is referred to as the secondary cell group. In addition, the PUCCH cell group including the primary cell is referred to as the primary PUCCH cell group. In addition, the PUCCH cell group not including the primary cell is referred to as the secondary PUCCH cell group.

[0143] That is, the secondary PUCCH cell group may include a PUCCH secondary cell. For example, the index for the primary PUCCH cell group may always be defined as 0. In addition, the index for the secondary PUCCH cell group may be set by the base station device 3 (or by a network device).

[0144] Here, the base station device 3 may include information indicating the PUCCH secondary cell in an upper layer signal and / or PDCCH (downlink control information sent through PDCCH) for transmission. The terminal device 1 may determine the PUCCH secondary cell based on the information indicating the PUCCH secondary cell. Here, the cell index of the PUCCH secondary cell may be pre-defined by a specification manual or the like.

[0145] As described above, the PUCCH in the PUCCH service cell can be used to send uplink control information (HARQ-ACK, CSI (e.g., periodic CSI) and / or SR) for the service cells (PUCCH service cells, non-PUCCH service cells) included in the PUCCH cell group to which the PUCCH service cell belongs.

[0146] That is, the uplink control information (HARQ-ACK, CSI (e.g., periodic CSI) and / or SR) for the service cells (PUCCH service cells, non-PUCCH service cells) included in the PUCCH cell group is sent using the PUCCH in the PUCCH service cells included in the PUCCH cell group.

[0147] Here, this embodiment may be applied only to the transmission of HARQ-ACK. In addition, this embodiment may also be applied only to the transmission of CSI (e.g., periodic CSI). In addition, this embodiment may also be applied only to the transmission of SR. In addition, this embodiment may also be applied only to the transmission of HARQ-ACK, the transmission of CSI (e.g., periodic CSI), and / or the transmission of SR.

[0148] That is, a cell group for sending HARQ-ACK (which may be a PUCCH cell group) may be set. In addition, a cell group for sending CSI (e.g., periodic CSI) (which may be a PUCCH cell group) may be set. In addition, a cell group for sending SR (which may be a PUCCH cell group) may be set.

[0149] For example, a cell group for sending ARQ-ACK, a cell group for sending CSI (e.g., periodic CSI), and / or a cell group for sending SR may be separately set. In addition, a common cell group may be set as a cell group for sending HARQ-ACK, a cell group for sending CSI (e.g., periodic CSI), and / or a cell group for sending SR.

[0150] Here, the number of cell groups for sending HARQ-ACK may be one or two. The number of cell groups for sending CSI may also be one or two. The number of cell groups for sending SR may also be one or two. In addition, the cell group for sending CSI (e.g., periodic CSI) and / or the cell group for sending SR may not be set (defined).

[0151] Here, multiple formats may be defined (supported) for PUCCH. A format supporting PUCCH (a format supported by PUCCH) is also referred to as a PUCCH format. For example, the following PUCCH formats are used to support a combination of uplink control information on PUCCH (combined transmission of uplink control information).

[0152] Format 1

[0153] Format 1a

[0154] Format 1b

[0155] Format 2

[0156] Format 2a

[0157] Format 2b

[0158] Format 3

[0159] Format 4

[0160] (Format 4a)

[0161] (Format 4b)

[0162] PUCCH format 1 can define a positive SR. For example, a positive SR can be used to indicate a request for UL-SCH resources. Here, a negative SR can be used to indicate that UL-SCH resources are not requested. Hereinafter, PUCCH format 1 is also referred to as the first PUCCH format.

[0163] In addition, PUCCH format 1a can define 1-bit HARQ-ACK (1-bit HARQ-ACK) or 1-bit HARQ-ACK with positive SR attached. In addition, PUCCH format 1b can define 2-bit HARQ-ACK (2-bit HARQ-ACK) or 2-bit HARQ-ACK with positive SR attached. In addition, PUCCH format 1b can define the transmission of less than 4 bits of HARQ-ACK through channel selection (up to 4-bit HARQ-ACK with channel selection). Hereinafter, PUCCH format 1a and / or PUCCH format 1b are also referred to as the second PUCCH format.

[0164] In addition, PUCCH format 2 can define a CSI report when not multiplexed with HARQ-ACK. In addition, PUCCH format 2a can define a CSI report multiplexed with 1-bit HARQ-ACK. In addition, PUCCH format 2b can define a CSI report multiplexed with 2-bit HARQ-ACK. Here, PUCCH format 2 can define a CSI report multiplexed with HARQ-ACK for extended cyclic prefix. Herein, PUCCH format 2 can define a CSI report multiplexed with HARQ-ACK for extended cyclic prefix. Hereinafter, PUCCH format 2, PUCCH format 2a and / or PUCCH format 2b are also referred to as the third PUCCH format.

[0165] In addition, PUCCH format 3 may define HARQ-ACK up to 10-bit HARQ-ACK. For example, for FDD or FDD-TDD primary cell frame structure type 1, PUCCH format 3 may define HARQ-ACK up to 10-bit.

[0166] In addition, PUCCH format 3 may also define HARQ-ACK up to 20-bit HARQ-ACK. For example, for TDD, PUCCH format 3 may define HARQ-ACK up to 20-bit HARQ-ACK. In addition, PUCCH format 3 may also define HARQ-ACK up to 21-bit HARQ-ACK. For example, for FDD-TDD primary cell frame structure type 2, PUCCH format 3 may define HARQ-ACK up to 21-bit HARQ-ACK.

[0167] In addition, PUCCH format 3 may also define up to 11-bit corresponding to up to 10-bit HARQ-ACK and 1-bit positive / negative SR. For example, for FDD or FDD-TDD, PUCCH format 3 may define up to 11-bit corresponding to up to 10-bit HARQ-ACK and 1-bit positive / negative SR.

[0168] In addition, PUCCH format 3 may also define up to 21-bit corresponding to up to 20-bit HARQ-ACK and 1-bit positive / negative SR corresponding to 20-bit HARQ-ACK and 1-bit positive / negative SR. For example, for TDD, PUCCH format 3 may define up to 21-bit corresponding to up to 20-bit HARQ-ACK and 1-bit positive / negative SR corresponding to 20-bit HARQ-ACK and 1-bit positive / negative SR corresponding to 20-bit HARQ-ACK and 1-bit positive / negative SR corresponding to 21-bit HARQ-ACK and 1-bit positive / negative SR corresponding to 20-bit HARQ-ACK and 1-bit positive / negative SR corresponding to 22-bit corresponding to up to 21-bit HARQ-ACK and 1-bit positive / negative SR corresponding ...

[0169] Here, when PUCCH format 3 is used to send uplink control information (HARQ-ACK, SR and / or CSI), a first coding method (e.g., Reed Muller code: Reed Muller coding (Reed Muller coding: Reed Muller coding) or (32, O) block code: (32, O) block code ((32, O) block coding: (32, O) block coding)) can be used. Here, for example, a base sequence for the (32, O) block code can be provided in advance through a specification, etc.

[0170] In addition, PUCCH format 3 may also define HARQ-ACK and a CSI report for one serving cell. In addition, PUCCH format 3 may also define HARQ-ACK and a CSI report for one serving cell. In addition, PUCCH format 3 may also define multiple CSI reports. In addition, PUCCH format 3 may also define HARQ-ACK and multiple CSI reports. In addition, PUCCH format 3 may also define HARQ-ACK, 1-bit positive / negative SR and a CSI report for one serving cell. In addition, PUCCH format 3 may also define HARQ-ACK, 1-bit positive / negative SR (if any) and a CSI report for one serving cell. In addition, PUCCH format 3 may also define HARQ-ACK, 1-bit positive / negative SR (if any) and a CSI report for one serving cell. In addition, PUCCH format 3 may also define HARQ-ACK, 1-bit positive / negative SR and a CSI report. In addition, PUCCH format 3 may also define HARQ-ACK, 1-bit positive / negative SR and multiple CSI reports. Hereinafter, PUCCH format 3 is also referred to as the fourth PUCCH format.

[0171] In addition, PUCCH format 4 may define HARQ-ACK corresponding to a number of service cells (downlink component carriers, downlink cells) of less than 32. In addition, PUCCH format 4 may also define HARQ-ACK and one or more CSI reports. In addition, PUCCH format 4 may also define HARQ-ACK and SR. In addition, PUCCH format 4 may also define HARQ-ACK, SR, and one or more CSI reports. Here, the one or more CSI reports may be CSI reports for one service cell. In addition, the one or more CSI reports may also be multiple CSI reports for multiple service cells. In addition, the one or more CSI reports may also include a CSI report for one CSI processing for one service cell. In addition, the one or more CSI reports may also be a CSI report for one CSI processing. In addition, the one or more CSI reports may also be multiple CSI reports for multiple CSI processing. In addition, the one or more CSI reports may also include a CSI report for one subframe set for one service cell. In addition, the one or more CSI reports may also be multiple CSI reports for multiple subframe sets. In addition, the SR may be a positive SR and / or a negative SR. In any case where HARQ-ACK is used, one or more CSI reports for multiple serving cells or multiple CSI processing are used, and HARQ-ACK and one or more CSI reports are sent simultaneously, different PUCCH formats may be used instead of the common PUCCH format 4. (For example, they may be defined as PUCCH format 4, PUCCH format 4a, and PUCCH format 4b, respectively) Below, PUCCH format 4 (which may also include PUCCH format 4a and PUCCH format 4b) is also referred to as the fifth PUCCH format.

[0172] Here, in case of using the fifth PUCCH format to transmit uplink control information, the second encoding method (eg, Tail biting convolutional encoder: Tail biting convolutional coding: Tail biting convolutional coding) or Turbo encoder: Turbo coding: Turbo coding) may be used.

[0173] That is, the number of bits per subframe sent (that can be sent) using the fifth PUCCH format can be greater than the number of bits per subframe sent (that can be sent) using the fourth PUCCH format. That is, the amount of information per subframe sent (that can be sent) using the fifth PUCCH format can be greater than the amount of information per subframe sent (that can be sent) using the fourth PUCCH format. In addition, as described above, different encoding methods can be used for the transmission of uplink control information using the fourth PUCCH format and the transmission of uplink control information using the fifth PUCCH format.

[0174] Here, when the third PUCCH format is used to send HARQ-ACK, the terminal device 1 can at least determine the number of HARQ-ACK bits based on the set number of service cells and the downlink transmission mode set for each service cell (each service cell that is set). In addition, when the fifth PUCCH format is used to send HARQ-ACK, the terminal device 1 can at least determine the number of HARQ-ACK bits based on the set or activated number of service cells and the downlink transmission mode set for each service cell (each service cell that is set or activated).

[0175] In addition, when the fourth PUCCH format is used to send HARQ-ACK, the terminal device 1 can at least determine the number of HARQ-ACK bits based on the set number of service cells and the downlink transmission mode set for each service cell (each service cell that is set). In addition, when the fifth PUCCH format is used to send HARQ-ACK, the terminal device 1 can at least determine the number of HARQ-ACK bits based on the set or activated number of service cells and the downlink transmission mode set for each service cell (each service cell that is set or activated).

[0176] Here, for example, the terminal device 1 can use a 2-bit HARQ-ACK bit for a service cell that is set to support a downlink transmission mode of less than two transport blocks (a downlink transmission mode that supports up to two transport blocks), and can use a 1-bit HARQ-ACK bit for other services (for example, for a service cell that is set to support a downlink transmission mode of one transport block (a downlink transmission mode that supports one transport block)). Here, for example, the downlink transmission mode that supports less than two transport blocks may include transmission mode 3, transmission mode 4, transmission mode 8, transmission mode 9 and / or transmission mode 10. In addition, the downlink transmission mode that supports one transport block may also include transmission mode 1, transmission mode 2, transmission mode 5, transmission mode 6 and / or transmission mode 7.

[0177] As described above, the base station device 3 can use the upper layer signal (e.g., RRC signaling) to set the service cell to the terminal device 1. In addition, the base station device 3 can also use the upper layer signal to set the downlink transmission mode (e.g., RRC signaling) to the terminal device 1. For example, the base station device 3 can set the downlink transmission mode associated with the transmission through the PDSCH to the terminal device 1. That is, for the transmission of HARQ-ACK using the fourth PUCCH format and / or the fifth PUCCH format, the number of HARQ-ACK bits can be determined at the RRC layer (based on the information in the RRC layer).

[0178] Here, the base station device 3 can use the upper layer signal (information sent using the upper layer signal) and / or PDCCH (downlink control information sent using PDCCH) to set the following content for the terminal device 1: use any one of PUCCH format 1b, PUCCH format 3, or PUCCH format 4 (which may also be PUCCH format 4a and / or PUCCH format 4b) with channel selection attached for the transmission of uplink control information (for example, the transmission of HARQ-ACK). That is, the base station device 3 can set the terminal device 1 to use PUCCH format 1b with channel selection attached for the transmission of uplink control information. In addition, the base station device 3 can also set the terminal device 1 to use PUCCH format 3 for the transmission of uplink control information. In addition, the base station device 3 can also set the terminal device 1 to use PUCCH format 4 (which may also be PUCCH format 4a and / or PUCCH format 4b) for the transmission of uplink control information.

[0179] For example, the base station device 3 can set the terminal device 1 to use any one of PUCCH format 1b, PUCCH format 3, or PUCCH format 4 (which can also be PUCCH format 4a and / or PUCCH format 4b) with channel selection according to the cell group. That is, the base station device 3 can set the terminal device 1 and each cell group to use any one of PUCCH format 1b, PUCCH format 3, or PUCCH format 4 (which can also be PUCCH format 4a and / or PUCCH format 4b) with channel selection. That is, the terminal device 1 can be set to use any one of PUCCH format 1b, PUCCH format 3, or PUCCH format 4 (which can also be PUCCH format 4a and / or PUCCH format 4b) with channel selection through the base station device 3.

[0180] In addition, in the case where more than one (more than one and less than five) service cells to which frame structure type 1 and / or frame structure type 2 are attached are set, the terminal device 1 can be set through the base station device 3 to use any one of PUCCH format 1b, PUCCH format 3 or PUCCH format 4 (which can also be PUCCH format 4a and / or PUCCH format 4b) to which channel selection is attached. In addition, in the case where more than five service cells to which frame structure type 1 and / or frame structure type 2 are attached are set, the terminal device 1 can be set through the base station device 3 to use any one of PUCCH format 1b, PUCCH format 3 or PUCCH format 4 (which can also be PUCCH format 4a and / or PUCCH format 4b) to which channel selection is attached.

[0181] In addition, the base station device 3 can indicate (set, allocate) PUCCH resources to the terminal device 1. Here, the PUCCH resources may include a first PUCCH resource (also referred to as n(1)PUCCH), a second PUCCH resource (also referred to as n(2)PUCCH), a third PUCCH resource (also referred to as n(3)PUCCH), and a fourth PUCCH resource (also referred to as n(4)PUCCH).

[0182] For example, the base station device 3 may send an upper layer signal including first information for setting a first PUCCH resource. For example, an SR may be sent through the first PUCCH resource. In addition, the base station device 3 may also send an upper layer signal including second information for indicating a period and / or offset for sending the SR. The terminal device 1 may also send an SR based on the setting made by the base station device 3. That is, the terminal device 1 may send an SR using the first PUCCH resource and / or the first PUCCH format.

[0183] In addition, the base station device 3 can use an upper layer signal and a PDCCH to indicate a first PUCCH resource. For example, the base station device 3 can send an upper layer signal containing third information for setting a first PUCCH resource. For example, a HARQ-ACK for a second PUCCH format can be sent through a first PUCCH resource. The terminal device 1 can determine the first PUCCH resource based on a CCE (Control Channel Element: control channel element) used for sending a PDCCH (e.g., the lowest index of a CCE) and the third information. The terminal device 1 can use the first PUCCH resource for sending a HARQ-ACK for a second PUCCH format. That is, the terminal device 1 can use the first PUCCH resource and / or the second PUCCH format to send a HARQ-ACK.

[0184] In addition, the base station device 3 may send an upper layer signal containing fourth information for setting a second PUCCH resource. For example, CSI (e.g., periodic CSI) may be sent via the second PUCCH resource. Here, a second PUCCH resource may be set for each service cell. That is, CSI for each service cell may be reported. In addition, the base station device 3 may also send an upper layer signal containing fifth information for indicating a period and / or offset for a periodic CSI report. Here, the fifth information may be information for each CSI process, each subframe set, and / or each service cell. The terminal device 1 may periodically report CSI based on the settings made by the base station device 3. That is, the terminal device 1 may use the second PUCCH resource and / or the third PUCCH format to report periodic CSI.

[0185] In addition, the base station device 3 can use upper layer signals and PDCCH (or downlink control information sent through PDCCH) to indicate a third PUCCH resource. For example, the third PUCCH resource can be used to send CSI, SR and / or HARQ-ACK in a fourth PUCCH format. For example, the base station device 3 can use upper layer signals to send sixth information for setting multiple values ​​associated with the third PUCCH resource, and can also indicate the third resource by indicating one of the multiple values ​​based on the value set in the field of the downlink control information sent through PDCCH (also called 1stARI: 1st ACK Resource Indicator).

[0186] For example, the base station device 3 may use an upper layer signal to transmit sixth information for setting four values ​​corresponding to the third PUCCH resource. Moreover, the base station device 3 may indicate a third resource corresponding to the one value by indicating one of the four values ​​based on the value set in the field of the downlink control information transmitted via the PDCCH (for example, "00", "01", "10", "11" set in the field of the 2-bit information). That is, the terminal device 1 may determine a third PUCCH resource corresponding to the one value based on one of the four values ​​corresponding to the four third PUCCH resources that satisfies the value set in the field of the downlink control information.

[0187] For example, the base station device 3 may indicate the third PUCCH resource based on the value set in the transmission power instruction field for PUCCH (hereinafter also referred to as TPC instruction field) included in the downlink assignment for the secondary cell transmitted through the PDCCH. That is, a value corresponding to a third PUCCH resource may be indicated based on the value set in the TPC instruction field included in the downlink assignment for indicating transmission through the PDSCH in the secondary cell.

[0188] Here, the TPC command field included in the downlink allocation for the primary cell (i.e., the downlink allocation for indicating transmission via the PDSCH in the primary cell) can be used for the transmit power command for transmission via the PUCCH. In addition, the TPC command field included in the downlink allocation for the PUCCH secondary cell (i.e., the downlink allocation for indicating transmission via the PDSCH in the PUCCH secondary cell) can also be used for the transmit power command for transmission via the PUCCH.

[0189] In addition, the base station device 3 may indicate the fourth PUCCH resource using an upper layer signal and PDCCH (or downlink control information transmitted via PDCCH). For example, the fourth PUCCH resource may be used to transmit CSI, SR and / or HARQ-ACK for the fifth PUCCH format.

[0190] For example, the terminal device 1 may use the second PUCCH resource and / or the third PUCCH format to report CSI in a certain subframe. That is, when the terminal device 1 uses the third PUCCH format to report CSI, the second PUCCH resource is used.

[0191] In addition, the terminal device 1 may report CSI using the third PUCCH resource and / or the fourth PUCCH format in a certain subframe. That is, when the terminal device 1 uses the fourth PUCCH format to transmit CSI, the third PUCCH resource is used.

[0192] In addition, the terminal device 1 may use the fourth PUCCH resource and / or the fifth PUCCH format to transmit CSI in a certain subframe. That is, when the terminal device 1 uses the fifth PUCCH format to transmit CSI, the fourth PUCCH resource is used.

[0193] Here, for example, the terminal device 1 may use different PUCCH formats and / or different PUCCH resources for reporting CSI corresponding to each service cell or a part of the service cells. In addition, the terminal device 1 may use different PUCCH formats and / or different PUCCH resources for reporting CSI corresponding to each CSI processing or a part of the CSI processing. In addition, the terminal device 1 may use different PUCCH formats and / or different PUCCH resources for reporting CSI corresponding to each subframe set or a part of the subframe set.

[0194] Here, different PUCCH resources may be used for multiple CSI reports using the same PUCCH format. For example, the second PUCCH resource for the first CSI report using the third PUCCH format and the second PUCCH resource for the second CSI report using the third PUCCH format may be different resources. For example, the second PUCCH resource for the second CSI report and the resource index for the second PUCCH resource for the first CSI report may be a PUCCH resource indicating (setting) a different resource index. In addition, the second PUCCH resource for the second CSI report and the orthogonal sequence index for the second PUCCH resource for the first CSI report may be a PUCCH resource indicating (setting) a different orthogonal sequence index. In addition, the second PUCCH resource for the second CSI report and the cyclic shift for the second PUCCH resource for the first CSI report may be a PUCCH resource indicating (setting) a different cyclic shift value.

[0195] Here, the cell index includes a serving cell index (also referred to as ServCellIndex) associated with an identifier for identifying a serving cell.

[0196] Here, the value of the serving cell index "0" may also be applied to the primary cell. In addition, the value of the allocated secondary cell index may be used as the value of the serving cell index applied to the secondary cell. Hereinafter, the secondary cell index (ScellIndex) and / or the serving cell index (ServCellIndex) are also referred to as cell indexes.

[0197] Here, the base station device 3 can set a cell index (the value of the cell index) for the terminal device 1. For example, the base station device 3 can send a signal of an upper layer including the cell index. The terminal device 1 can identify the cell index of the serving cell based on the cell index set by the base station device 3. That is, the cell index can be an index in an upper layer (also referred to as an index in an RRC layer, an index of RRC).

[0198] The following basically describes the actions in the terminal device 1, and of course, the base station device 3 performs actions corresponding to the terminal device 1. In addition, the actions described in this embodiment can be performed by cell group. That is, the base station device 3 and / or the terminal device 1 can perform the actions described in this embodiment in one cell group.

[0199] In addition, for example, the actions described in this embodiment can be applied to the case where PUCCH format 3 is set for the transmission of uplink control information (for example, the transmission of CSI report). In addition, the actions described in this embodiment can be applied to the case where PUCCH format 4 is set for the transmission of uplink control information (for example, the transmission of CSI report).

[0200] In addition, the actions described in this embodiment may be applied to a case where one serving cell is set. In addition, the actions described in this embodiment may be applied to a case where more than one serving cell is set. In addition, the actions described in this embodiment may be applied to a case where more than five serving cells are set. Here, the case where more than one serving cell is set may be a case where more than one and less than five serving cells are set.

[0201] Hereinafter, periodic CSI reporting (periodic CSI reporting) using the PUCCH according to the present embodiment will be described. However, a plurality of CSI subframe sets may be configured in the uplink for performing CSI reporting.

[0202] The base station device 3 sets the terminal device 1 to use any reporting mode to report periodic CSI through PUCCH. The base station device 3 sets the reporting mode and the PUCCH resources for reporting periodic CSI in each serving cell. The base station device 3 sends information related to the reporting of periodic CSI for each serving cell to the terminal device 1.

[0203] (A) For example, the terminal device 1 that has set the reporting mode 1-0 does not transmit the PMI. Also, the terminal device 1 that has set the reporting mode 1-0 does not transmit the subband CQI but transmits the wideband CQI.

[0204] (B) For example, the terminal device 1 that has set the reporting mode 1-1 transmits the PMI. In addition, the terminal device 1 that has set the reporting mode 1-1 does not transmit the subband CQI but transmits the wideband CQI.

[0205] (C) For example, the terminal device 1 that has set the reporting mode 2-0 does not transmit the PMI. In addition, the terminal device 1 that has set the reporting mode 2-0 transmits the subband CQI and the wideband CQI.

[0206] (D) For example, the terminal device 1 that has set the reporting mode 2-1 transmits the PMI. In addition, the terminal device 1 that has set the reporting mode 2-1 transmits the subband CQI and the wideband CQI.

[0207] The wideband CQI is calculated based on the CRS and / or CSI-RS transmitted in all physical resource blocks in a certain subframe of a certain serving cell. The subband CQI is calculated based on the CRS and / or CSI-RS transmitted in the physical resource blocks constituting a specific part of the frequency band in a certain subframe of a certain serving cell.

[0208] Each CSI reporting mode supports multiple report types.

[0209] (A) For example, reporting type 1 supports subband CQI feedback.

[0210] (B) For example, reporting type 1a supports subband CQI and PMI feedback.

[0211] (C) For example, report type 2, report type 2a, and report type 2b support wideband CQI and PMI feedback.

[0212] (D) For example, report type 3 supports RI feedback.

[0213] (E) For example, report type 4 supports wideband CQI feedback.

[0214] (F) For example, report type 5 supports RI and wideband PMI feedback.

[0215] (G) For example, report type 6 supports RI and PTI feedback.

[0216] When reporting mode 1-0 is set for a certain service cell, terminal device 1 reports CSI of reporting type 3 and reporting type 4 corresponding to the service cell to base station device 3. When reporting mode 1-1 is set for a certain service cell, terminal device 1 reports CSI of reporting type 2 / 2b / 2c, reporting type 3 and reporting type 5 corresponding to the service cell to base station device 3.

[0217] When reporting mode 2-0 is set for a certain service cell, the terminal device 2 reports the CSI of reporting type 1, reporting type 3, and reporting type 4 corresponding to the service cell to the base station device 3. When reporting mode 1-1 is set for a certain service cell, the terminal device 2 reports the CSI of reporting type 1 / 1a, reporting type 2 / 2a / 2b, reporting type 3, and reporting type 6 corresponding to the service cell to the base station device 3.

[0218] Terminal device 1 can set a transmission mode (for example, transmission mode 10) in which multiple CSI processes can be set in a certain service cell, and can also set a RI-reference CSI process (RI-reference CSI process) for the CSI process when RI and / or PMI are reported in a certain CSI process. When RI-reference CSI process is set for a certain CSI process in terminal device 1, the RI reported by the CSI process is the same as the RI included in the most recent report of channel state information containing RI for the set RI-reference CSI process. The RI reported by the RI-reference CSI process is not based on other set CSI processes. Terminal device 1 does not want to receive a request for a non-periodic CSI report, that is, a request for a CSI report that triggers a CSI report that includes CSI associated with a certain CSI process in a certain subframe and does not include CSI associated with the set RI-reference CSI process.

[0219] The following describes the reporting of RI (also referred to as periodic RI) in the periodic CSI reporting according to the present embodiment.

[0220] The terminal device 1 determines RI according to the number of transmission layers that can be used in spatial multiplexing. In the case of transmit diversity, RI is set to 1. RI corresponds to PDSCH (Physical Downlink Shared CHannel) transmission and corresponds to the number of layers determined by the terminal device 1.

[0221] The terminal device 1 can set one or more CSI processings through the upper layer. For each CSI processing, the CSI processing index is set by the upper layer. In each CSI processing, whether to report PMI and / or RI is set by upper layer signaling. The terminal device 1 determines an RI from the settings of the RI values ​​supported in the reporting interval of each RI, and reports the number of transmission layers each time the RI is reported.

[0222] In addition, the terminal device 1 may also configure one or more CSI subframe sets (e.g., CSI subframe set 0 and CSI subframe set 1) through an upper layer. The terminal device 1 that has configured multiple subframe sets may configure CQI and RI for each subframe set separately (e.g., the period and offset of the reporting timing).

[0223] The following describes the order of reporting RI and CQI in each reporting mode. RI and CQI are described below, but other CSI (such as PMI, PTI, etc.) may be reported simultaneously in any order.

[0224] In the case of reporting mode 1-0, RI and CQI are calculated as follows.

[0225] (For RI in reporting mode 1-0) In the case of transmission mode 3, the terminal device 1 determines the RI assuming that transmission is performed in all frequency bands that can be set as subbands (sometimes referred to as set S subands) in the subframe reporting the RI, and reports it using reporting type 3.

[0226] (For CQI in reporting mode 1-0) Terminal device 1 reports CQI using reporting type 4 consisting of a wideband CQI calculated by assuming that transmission is performed in all frequency bands that can be set as subbands in the subframe reporting CQI. In the case of transmission mode 3, CQI is calculated based on the last reported periodic RI. In the case of other transmission modes, CQI is calculated as if the rank is 1.

[0227] In the case of reporting mode 1-1, RI and CQI are calculated as follows.

[0228] (Regarding RI in reporting mode 1-1) When transmission mode 10 is set in the subframe reporting RI and an RI-reference CSI process is set for a certain CSI process, the terminal device 1 sets the RI of the CSI process to the same value as the RI of the most recent CSI report that includes the RI of the set RI-reference CSI process, regardless of the subframe set setting. In other cases, the terminal device 1 determines the RI assuming transmission of all frequency bands that can be set as subbands. The terminal device 1 reports the determined RI using report type 3 (when PMI is not attached) or report type 5 (when PMI is attached).

[0229] (For CQI in reporting mode 1-1) In the case of a specified transmission mode (e.g., transmission modes 4, 8, 9, and 10), the terminal device 1 reports the CQI in the subframe in which the CQI is reported as follows. When the terminal device 1 sets transmission mode 10, an RI-reference CSI process is set for a certain CSI process, the most recent report of report type 3 for the CSI process is discarded, and the most recent report of report type 3 is performed in the RI-reference CSI process used for the CSI process, the CQI for the CSI process is calculated based on the periodic RI reported by the RI-reference CSI process. When the terminal device 1 sets transmission mode 10, and an RI-reference CSI process is not set for a certain CSI process, the CQI for the CSI process is calculated based on the periodic RI reported last for the CSI process. In other cases, the CQI is calculated based on the last reported periodic RI. In the case of a transmission mode other than the specified transmission mode (e.g., calculation in transmission mode 4, 8, 9, and 10), the terminal device 1 calculates the CQI (and PMI) as if it were a rank 1 transmission.

[0230] Figure 4 The following situation is shown: a terminal device 1 set to transmission mode 10 in a certain service cell performs a first RI report and a first CQI report for a first CSI processing of the service cell, and performs a second RI report and a second CQI report for a second CSI processing of the service cell. In addition, in the second CSI processing, it is set to set the first CSI processing as an RI reference CSI processing. Here, the value of the second RI of the second CSI processing reported in subframe number 3 and subframe number 13 is the same as the value of the RI reported in subframe number 2. Here, in a case where the second RI of the second CSI processing reported in subframe number 23 is discarded due to any condition described later, the second CQI of the second CSI processing reported in subframe number 26 is calculated based on the RI reported in subframe number 22 of the first CSI processing as an RI reference CSI processing.

[0231] In the case of reporting mode 2-0, RI and CQI are calculated as follows.

[0232] (For RI in reporting mode 2-0) In the case of transmission mode 3, the terminal device 1 determines the RI assumed to be transmitted in the set S subband in the subframe reporting the RI, and reports it using reporting type 3.

[0233] (For wideband CQI in reporting mode 2-0) The terminal device 1 reports CSI of reporting type 4 consisting of a wideband CQI calculated by assuming that transmission is performed in all frequency bands that can be set as subbands in the subframe reporting the wideband CQI. In the case of transmission mode 3, the CQI is calculated based on the last reported periodic RI. In the case of other transmission modes, the CQI corresponding to reporting mode 2-0 is calculated as if the rank is 1.

[0234] (For subband CQI in reporting mode 2-0) In the subframe reporting the CQI of the selected subband, the terminal device 1 reports the CQI value that reflects only the transmission of the subband using reporting type 1. Even when the RI is greater than 1, the CQI value corresponding to reporting mode 2-0 only represents the channel quality of the first codeword. In the case of transmission mode 3, the terminal device 1 calculates the selection of the subband and the CQI value using the last reported periodic RI, and in the case of other transmission modes, the selection of the subband corresponding to reporting mode 2-0 and the CQI value are calculated as if the rank is 1.

[0235] In the case of reporting mode 2-1, RI and CQI are calculated as follows.

[0236] (For RI in reporting mode 2-1) When transmission mode 10 is set in the subframe reporting RI and an RI-reference CSI process is set for a certain CSI process, terminal device 1 sets the RI of the CSI process to the same value as the RI of the most recent CSI report that includes the RI of the set RI-reference CSI process, regardless of the subframe set configuration. In other cases, terminal device 1 determines the RI assumed to be transmitted in all frequency bands that can be set as subbands. Terminal device 1 reports the determined RI using report type 3 (when PTI is not attached) or report type 6 (when PTI is attached).

[0237] (For wideband CQI in reporting mode 2-1) In the case of a specified transmission mode (e.g., transmission modes 4, 8, 9, and 10), the terminal device 1 reports the wideband CQI as described below in the subframe in which the wideband CQI is reported. When transmission mode 10 is set for the terminal device 1, an RI-reference CSI process is set for a certain CSI process, the most recent report of report type 3 for the CSI process is discarded, and in the case of the most recent report of report type 3 for which an RI-reference CSI process is performed for the CSI process, the CQI for the CSI process is calculated based on the periodic RI reported by the RI-reference CSI process. In other cases, the CQI is calculated based on the periodic RI reported last for the CSI process. In the case of a transmission mode other than the specified transmission mode (e.g., transmission modes 4, 8, 9, and 10), the terminal device 1 calculates the wideband CQI for reporting mode 2-1 as a rank 1 transmission.

[0238] (For subband CQI in reporting mode 2-1) The terminal device 1 reports the value of the CQI of the first codeword that reflects only the transmission of the subband in the subframe reporting the selected subband CQI by reporting type 1. Wherein, when RI is greater than 1, the terminal device 1 adds 3 bits to the subband CQI of the difference between the subband CQI index of the second codeword and the subband CQI index of the first codeword and reports it. In the case of a specified transmission mode (for example, transmission modes 4, 8, 9, and 10), the terminal device 1 reports the CQI as described below. When transmission mode 10 is set, RI-reference CSI processing is set for a certain CSI processing, the most recent report type 3 report of the CSI processing is discarded, and in the case of the most recent report type 3 report of the RI-reference CSI processing performed for the CSI processing, the terminal device 1 calculates the selection of the subband used for the CSI processing and the value of the CQI based on the periodic RI reported by the RI-reference CSI processing. In other cases, the selection of the subband used for the CSI processing and the CQI value are calculated based on the last reported periodic RI. In the case of a transmission mode other than the specified transmission mode (e.g., transmission modes 4, 8, 9, 10), the terminal device 1 calculates the selection of the subband and the CQI value as a rank 1 transmission.

[0239] The following describes the operation when one or more RIs according to this embodiment are reported simultaneously.

[0240] The terminal device 1 can set the PUCCH format for reporting RI in each set service cell. For example, in order to report RI, the terminal device 1 can set the PUCCH format that can be used among the third PUCCH format, the fourth PUCCH format, and the fifth PUCCH format in each set service cell.

[0241] The terminal device 1 can set the PUCCH format for reporting RI in each set subframe set. For example, in order to report RI, the terminal device can set the PUCCH format that can be used in the third PUCCH format, the fourth PUCCH format, and the fifth PUCCH format in each set frame set.

[0242] The terminal device 1 may set a PUCCH format for reporting RI in each configured CSI process. For example, in order to report RI, the terminal device 1 may set a PUCCH format that can be used in the third PUCCH format, the fourth PUCCH format, and the fifth PUCCH format in each configured CSI process.

[0243] However, it is also possible to set in common in all service cells whether a format capable of simultaneously reporting multiple CSIs (e.g., the fifth PUCCH format) is used for terminal device 1. However, it is also possible to set in common in all subframe sets whether a format capable of simultaneously reporting multiple CSIs (e.g., the fifth PUCCH format) is used for terminal device 1. However, it is also possible to set in common in all CSI processing whether a format capable of simultaneously reporting multiple CSIs (e.g., the fifth PUCCH format) is used for terminal device 1. However, it is possible to set whether a format capable of simultaneously reporting multiple CSIs can be applied in a system using terminal device 1, and it is also possible to set the terminal device 1 through signaling from an upper layer.

[0244] However, when a PUCCH format (for example, the third PUCCH format) that can only report one CSI is set for a certain PUCCH (set as the first PUCCH), and a format (for example, the fifth PUCCH format) that can simultaneously report multiple CSIs is set for another PUCCH (set as the second PUCCH), and a conflict occurs between the first PUCCH and the second PUCCH, the CSI reported through the first PUCCH and the CSI reported through the second PUCCH can be reported simultaneously through the second PUCCH.

[0245] That is, in the case where the transmission by using the first PUCCH resource using the third PUCCH format for reporting one CSI conflicts with the transmission by using the second PUCCH resource using the fifth PUCCH format for simultaneously reporting multiple CSIs, the one CSI and / or part or all of the multiple CSIs may be reported through the second PUCCH resource. That is, in the case where the reporting of one CSI using the third PUCCH format and / or the first PUCCH resource conflicts with the reporting of multiple CSIs using the fifth PUCCH format and / or the second PUCCH resource, the one CSI and / or part or all of the multiple CSIs may be reported using the fifth PUCCH format and / or the second PUCCH resource.

[0246] Here, for example, the first PUCCH may be a PUCCH for reporting CSI related to the second CSI processing of a certain service cell (first service cell), and the second PUCCH may be a PUCCH for reporting CSI for other service cells (second service cells). That is, when the first CSI related to the first CSI processing of the first service cell is reported by a PUCCH using an arbitrary PUCCH format, the second CSI related to the second CSI processing of the first service cell is reported by a PUCCH using a third PUCCH format, and the CSI for the second service cell is reported by a PUCCH using a fifth PUCCH format, and in a certain subframe, when the report of the second CSI conflicts with the report of the CSI for the second service cell, the terminal device 1 can report the conflicting second CSI and the CSI for the second service cell by using a PUCCH using the fifth PUCCH format.

[0247] In addition, for example, the first PUCCH may be a PUCCH for reporting CSI related to a second subframe set of a certain service cell (first service cell), and the second PUCCH may be a PUCCH for reporting CSI for other service cells (second service cells). That is, when the first CSI related to the first subframe set of the first service cell is reported by a PUCCH using an arbitrary PUCCH format, the second CSI related to the second subframe set of the first service cell is reported by a PUCCH using a third PUCCH format, and the CSI for the second service cell is reported by a PUCCH using a fifth PUCCH format, and in a certain subframe, the report of the second CSI conflicts with the report of the CSI for the second service cell, the terminal device 1 can report the conflicting second CSI and the CSI for the second service cell by using a PUCCH using the fifth PUCCH format.

[0248] Among them, when a format that can simultaneously report multiple CSIs (for example, the fifth PUCCH format) is set for the first PUCCH, and a format that can simultaneously report multiple CSIs (for example, the fifth PUCCH format) is set for the second PUCCH, and a conflict occurs between the first PUCCH and the second PUCCH, the CSI reported through the first PUCCH and the CSI reported through the second PUCCH can be reported simultaneously through either the first PUCCH or the second PUCCH.

[0249] That is, in the case where the transmission by using the first PUCCH resource of the fifth PUCCH format for simultaneously reporting the first plurality of CSIs conflicts with the transmission by using the second PUCCH resource of the fifth PUCCH format for reporting the second plurality of CSIs, part or all of the first plurality of CSIs and / or the second plurality of CSIs may be reported through the first PUCCH resource or the second PUCCH resource. That is, in the case where the reporting of the first plurality of CSIs using the fifth PUCCH format and / or the first PUCCH resource conflicts with the reporting of the second plurality of CSIs using the fifth PUCCH format and / or the second PUCCH resource, part or all of the first plurality of CSIs and / or the second plurality of CSIs may be reported using the first PUCCH resource or the second PUCCH resource. Here, part or all of the first plurality of CSIs and / or the second plurality of CSIs may be reported using the fifth PUCCH format.

[0250] Here, for example, the first PUCCH may be a PUCCH for reporting CSI related to the second CSI processing of a certain service cell (first service cell), and the second PUCCH may be a PUCCH for reporting CSI for other service cells (second service cells). That is, when the first CSI related to the first CSI processing of the first service cell is reported by a PUCCH using an arbitrary PUCCH format, the second CSI related to the second CSI processing of the first service cell is reported by a PUCCH using the fifth PUCCH format, and the CSI for the second service cell is reported by a PUCCH using the fifth PUCCH format, and in a certain subframe, when the report of the second CSI conflicts with the report of the CSI for the second service cell, the terminal device 1 can report the conflicting second CSI and the CSI for the second service cell by using the PUCCH using the fifth PUCCH format.

[0251] In addition, for example, the first PUCCH may be a PUCCH for reporting CSI related to a second subframe set of a certain service cell (first service cell), and the second PUCCH may be a PUCCH for reporting CSI for other service cells (second service cells). That is, when the first CSI related to the first CSI processing of the first service cell is reported by a PUCCH using an arbitrary PUCCH format, the second CSI related to the second subframe set of the first service cell is reported by a PUCCH using the fifth PUCCH format, and the CSI for the second service cell is reported by a PUCCH using the fifth PUCCH format, and in a certain subframe, the report of the second CSI conflicts with the report of the CSI for the second service cell, the terminal device 1 can report the conflicting second CSI and the CSI for the second service cell by using the PUCCH using the fifth PUCCH format.

[0252] Among them, when a PUCCH format that can only report one CSI (for example, the third PUCCH format) is set for the first PUCCH, and a PUCCH format that can only report one CSI (for example, the third PUCCH format) is set for the second PUCCH, and a conflict occurs between the first PUCCH and the second PUCCH, it can be processed to discard any one of the reports of the CSI reported through the first PUCCH and the reports of the CSI reported through the second PUCCH.

[0253] Here, for example, the first PUCCH may be a PUCCH for reporting CSI related to the second CSI processing of a certain service cell (first service cell), and the second PUCCH may be a PUCCH for reporting CSI for other service cells (second service cells). That is, when the first CSI related to the first CSI processing of the first service cell is reported by using a PUCCH using an arbitrary PUCCH format, the second CSI related to the second CSI processing of the first service cell is reported by using a PUCCH using a third PUCCH format, and the CSI for the second service cell is reported by using a PUCCH using a third PUCCH format, and in a certain subframe, the report of the second CSI conflicts with the report of the CSI for the second service cell, the terminal device 1 may discard any one of the conflicting second CSI and the CSI for the second service cell.

[0254] In addition, for example, the first PUCCH may be a PUCCH for reporting CSI related to a second subframe set of a certain service cell (first service cell), and the second PUCCH may be a PUCCH for reporting CSI for other service cells (second service cells). That is, when the first CSI related to the first subframe set of the first service cell is reported by using a PUCCH using an arbitrary PUCCH format, the second CSI related to the second subframe set of the first service cell is reported by using a PUCCH using a third PUCCH format, and the CSI for the second service cell is reported by using a PUCCH using a third PUCCH format, and in a certain subframe, the report of the second CSI conflicts with the report of the CSI for the second service cell, the terminal device 1 may discard any one of the conflicting second CSI and the CSI for the second service cell.

[0255] Among them, when a PUCCH format that can only report one CSI (for example, the third PUCCH format) is set for the first PUCCH, a PUCCH format that can only report one CSI (for example, the third PUCCH format) is set for the second PUCCH, a format that can simultaneously report multiple CSIs (for example, the fifth PUCCH format) is set for the terminal device 1, and when a conflict occurs between the first PUCCH and the second PUCCH, it can be processed by using a format that can simultaneously report the multiple CSIs, and the CSI reported through the first PUCCH and the CSI reported through the second PUCCH are reported at the same time.

[0256] Among them, when a PUCCH format that can only report one CSI (for example, the third PUCCH format) is set for the first PUCCH, a PUCCH format that can only report one CSI (for example, the third PUCCH format) is set for the second PUCCH, and a format that can simultaneously report multiple CSIs (for example, the fifth PUCCH format) is not set for the terminal device 1, and a conflict occurs between the first PUCCH and the second PUCCH, it can be processed as discarding any one of the reporting of the CSI of the first PUCCH and the reporting of the CSI of the second PUCCH.

[0257] That is, in a terminal device for which the fifth PUCCH format for simultaneously reporting multiple CSIs is set (transmission of uplink control information using the fifth PUCCH format is set), when a report of a first CSI using the third PUCCH format and / or the first PUCCH resource conflicts with a report of a second CSI using the third PUCCH format and / or the second PUCCH resource, the fifth PUCCH format may be used to report part or all of the first CSI and / or the second CSI. Here, part or all of the first CSI and / or the second CSI may be reported by using the PUCCH resources of the fifth PUCCH format.

[0258] Here, for example, the first PUCCH may be a PUCCH for reporting CSI related to the second CSI processing of a certain service cell (first service cell), and the second PUCCH may be a PUCCH for reporting CSI for other service cells (second service cells). That is, when the first CSI related to the first CSI processing of the first service cell is reported by a PUCCH using an arbitrary PUCCH format, the second CSI related to the second CSI processing of the first service cell is reported by a PUCCH using a third PUCCH format, and the CSI for the second service cell is reported by a PUCCH using the third PUCCH format, and in a certain subframe, when the report of the second CSI conflicts with the report of the CSI for the second service cell, the terminal device 1 for which the fifth PUCCH format is set can report the conflicting second CSI and the CSI for the second service cell by using the PUCCH using the fifth PUCCH format, and the terminal device 1 for which the fifth PUCCH format is not set can discard any one of the conflicting second CSI and the CSI for the second service cell.

[0259] In addition, for example, the first PUCCH may be a PUCCH for reporting CSI related to a second subframe set of a certain service cell (first service cell), and the second PUCCH may be a PUCCH for reporting CSI for other service cells (second service cells). That is, when the first CSI related to the first subframe set of the first service cell is reported by a PUCCH using an arbitrary PUCCH format, the second CSI related to the second subframe set of the first service cell is reported by a PUCCH using a third PUCCH format, and the CSI for the second service cell is reported by a PUCCH using the third PUCCH format, and in a certain subframe, the report of the second CSI conflicts with the report of the CSI for the second service cell, the terminal device 1 for which the fifth PUCCH format is set can report the conflicting second CSI and the CSI for the second service cell by using the PUCCH using the fifth PUCCH format, and the terminal device 1 for which the fifth PUCCH format is not set can discard any one of the conflicting second CSI and the CSI for the second service cell.

[0260] In the case where multiple CSI reports conflict in a certain subframe, and all CSIs that conflict in the applicable PUCCH format can be reported simultaneously, the terminal device 1 can report without discarding all CSI. In a certain service cell, multiple configurable transmission modes (such as transmission mode 10) are set for CSI processing. In a certain subframe, when CSI associated with a certain CSI processing and CSI associated with RI reference CSI processing for the certain CSI processing conflict, the terminal device 1 can discard the report of any CSI. For example, the discarded CSI report can be a report of CSI associated with the certain CSI processing for which the RI reference CSI processing is set.

[0261] That is, the terminal device 1 can use one PUCCH (PUCCH resource) in one subframe to report the CSI associated with the first CSI processing. In addition, the terminal device 1 can use one PUCCH (PUCCH resource) in one subframe to report the CSI associated with the second CSI processing different from the first CSI processing. Here, the PUCCH format for reporting one CSI can be used for the CSI report associated with the first CSI processing. In addition, the PUCCH format for reporting one CSI can be used for the CSI report associated with the second CSI processing.

[0262] Here, in the case where the report of the CSI associated with the first CSI processing and the report of the CSI associated with the second CSI processing conflict in one subframe, the terminal device 1 can use one PUCCH (PUCCH resource) to report part or all of the CSI associated with the first CSI processing and the CSI associated with the second CSI processing in the one subframe. Here, the first CSI processing is not a CSI processing for RI reference of the second CSI processing. In addition, the PUCCH format for simultaneously reporting multiple CSIs can be used for reporting part or all of the CSI associated with the first CSI processing and the CSI associated with the second CSI processing.

[0263] In addition, in the case where the report of the CSI associated with the first CSI processing and the report of the CSI associated with the second CSI processing conflict in one subframe, the terminal device 1 can use one PUCCH (PUCCH resource) to report any one of the CSI associated with the first CSI processing and the CSI associated with the second CSI processing in the one subframe. That is, the terminal device 1 can discard the report of the CSI associated with the first CSI processing and only report the CSI associated with the second CSI processing. In addition, the terminal device 1 can also discard the report of the CSI associated with the second CSI processing and only report the CSI associated with the first CSI processing. Here, the first CSI processing is a CSI processing for RI reference of the second CSI processing. In addition, the PUCCH format for simultaneously reporting multiple CSIs can be used for reporting the CSI associated with the first CSI processing or the CSI associated with the second CSI processing.

[0264] That is, the terminal device 1 can switch whether to report both the CSI associated with the first CSI processing and the CSI associated with the second CSI processing, or discard (report) any one of the CSI associated with the first CSI processing and the CSI associated with the second CSI processing, based on whether the first CSI processing is a CSI processing for RI reference for the second CSI processing. Here, whether to discard any one of the CSI associated with the first CSI processing and the CSI associated with the second CSI processing (discarding rules, priorities) is as follows.

[0265] Figure 5 This is a flowchart showing an example of the operation of the terminal device 1 when a plurality of PUCCHs transmitting CSI in respective predetermined PUCCH formats collide with each other. However, the fifth PUCCH format in this flowchart may be any format that can simultaneously report a plurality of CSIs.

[0266] In step S101, when the fifth PUCCH format is set with any one of the conflicting PUCCHs (S101-Yes), the process proceeds to step S103, and when it is not set (S101-No), the process proceeds to step S102. In step S102, when the fifth PUCCH format is set for the terminal device 1 (S102-Yes), the process proceeds to step S103, and when it is not set (S102-No), the process proceeds to step S104. In step S103, when all conflicting CSI can be reported using the applicable fifth PUCCH format (S103-Yes), the process proceeds to step S105, and when it cannot be reported (S103-No), the process proceeds to step S104. In step S104, the terminal device 1 discards CSI reports with low priority based on the prescribed rules described later until it can be reported using the applicable PUCCH format. In step S105, the terminal device 1 reports all CSI that have not been discarded using the applicable PUCCH format.

[0267] Among them, in a certain service cell, a plurality of configurable transmission modes (for example, transmission mode 10) are set for CSI processing. In a certain subframe, when a CSI report associated with a certain CSI processing (which may also be a RI report) and a CSI report associated with a CSI processing for which the same RI reference CSI processing as the CSI processing is set (which may also be a RI report) conflict in transmission, the terminal device 1 may discard any one of the CSI reports as the report with the lowest priority. For example, the discarded CSI report may be a CSI report associated with a CSI processing for which the RI reference CSI processing is set.

[0268] Figure 6 This is a diagram for explaining an example of a discarding rule when a plurality of CSI reports collide. Figure 6 The following situation is shown: a terminal device 1 set to transmission mode 10 in a certain service cell reports a first RI and a first CQI for a first CSI processing of the service cell, and reports a second RI and a second CQI for a second CSI processing of the service cell. Here, it is assumed that in subframe number 2 and subframe number 22, the report of the first RI for the first CSI processing and the report of the second RI for the second CSI processing conflict.

[0269] When the PUCCH format that can simultaneously report multiple CSIs for the first RI report and the second RI report cannot be applied, the terminal device 1 discards either the first RI report or the second RI report in subframe number 2 and subframe number 22. The selection of the discarded RI report can be performed according to the rules described later.

[0270] In the case where a PUCCH format capable of simultaneously reporting multiple CSIs for reporting the first RI and the second RI can be applied, the terminal device 1 can perform processing as described later. In the case where the first CSI processing is an RI reference CSI processing for the second CSI processing, the terminal device 1 can discard the report of the second RI that conflicts with the report of the first RI. In this case, the second CQI in the subframe number 6 of the second CSI processing can be calculated based on the first RI reported by the subframe number 2 of the first CSI processing, and the second CQI in the subframe number 26 of the second CSI processing can be calculated based on the first RI reported by the subframe number 22 of the first CSI processing. In the case where the first CSI processing is not an RI reference CSI processing for the second CSI processing, the terminal device 1 can apply a PUCCH format capable of simultaneously reporting multiple CSIs to report both the first RI and the second RI.

[0271] Figure 7 It is a flowchart showing an example of the actions of the terminal device 1 when multiple configurable transmission modes (e.g., transmission mode 10) are set for CSI processing, a format that can simultaneously report multiple CSIs (e.g., the fifth PUCCH format) is in a usable state, and a conflict occurs in multiple CSI reports. Figure 7 The actions of the flowchart can also be added to, for example Figure 5 Before step S103 (i.e., between step S101-Yes and step S103 and / or between step S102-Yes and step S103). Figure 7 The first CSI report and the second CSI report may also be used as the first RI report and the second RI report, respectively.

[0272] In step S201, when the report of the first CSI in the first CSI processing conflicts with the report of the second CSI in the second CSI processing (S201-Yes), the process proceeds to step S202, and when no conflict occurs (S201-No), the process ends. However, for the report of the first CSI and the report of the second CSI in step S201, it is desirable to apply the report to all CSIs that conflict. In step S202, when the first CSI processing is the RI reference CSI processing of the second CSI processing (S202-Yes), the process proceeds to step S203, and when the first CSI processing is not the RI reference CSI processing of the second CSI processing (S202-No), the process proceeds to step S204. In step S203, the report of the second CSI in the second CSI processing that sets the first CSI processing as the RI reference CSI processing is discarded, and the process ends. In step S204, the process ends without discarding the report of the second CSI of the second CSI processing.

[0273] In this way, even if a format that can simultaneously report multiple CSIs (such as the fifth PUCCH format) is in a usable state, the PUCCH resources used in the report can be saved by discarding the report of the CSI processing that sets other CSI processing as the RI reference CSI processing.

[0274] However, in the above description, the action of discarding is shown when the report of CSI in the CSI processing set as RI reference CSI processing conflicts with the report of CSI in the CSI processing of the reference object, but the terminal device can also perform the action of discarding when the report of CSI in the CSI processing set as other CSI processing as RI reference CSI processing conflicts with the report of any CSI.

[0275] The following describes the priority rules when a plurality of CSI reports conflict in this embodiment.

[0276] When a conflict occurs in a report of CSI of reporting type 1, 1a, 2, 2a, 2b, 2c or 4 of a service cell which is the same as a report of CSI of reporting type 3, 5 or 6 of a certain service cell, and when all the conflicting CSI cannot be reported simultaneously in an applicable PUCCH format, the terminal device 1 sets the report of the latter (reporting type 1, 1a, 2, 2a, 2b, 2c or 4) CSI as a report of a CSI with a lower priority in the reporting type.

[0277] In a certain service cell, when multiple configurable transmission modes (for example, transmission mode 10) are set for CSI processing, and conflicts occur in reports of multiple CSI processings with the same reporting type and different priorities, and all the conflicting CSIs cannot be reported simultaneously in the applicable PUCCH format, the terminal device 1 sets the CSI of the CSI processing with a larger CSI processing index as the report of the CSI processing with a lower priority.

[0278] In a certain service cell, a configurable transmission mode (for example, transmission modes 1 to 9) is set for CSI processing, and CSI subframe set 0 and CSI subframe set 1 are set by upper-layer parameters. When a conflict occurs in CSI reports of the same service cell and the same priority reporting type, and all the conflicting CSIs cannot be reported simultaneously in the applicable PUCCH format, the terminal device 1 sets the CSI report of CSI subframe set 1 to the report of the CSI with a lower priority in the subframe set.

[0279] In a certain service cell, multiple configurable transmission modes (for example, transmission mode 10) are set for CSI processing, and CSI subframe set 0 and CSI subframe set 1 are set by upper-layer parameters. In the same service cell, the same priority reporting type and the same CSI processing, when a conflict occurs in the reporting of CSI, and all the conflicting CSIs cannot be reported simultaneously in the applicable PUCCH format, the terminal device 1 sets the reporting of the CSI of CSI subframe set 1 as the reporting of the CSI with a lower priority in the subframe set.

[0280] In a terminal device 1, multiple service cells are set, and when a PUCCH format that can only report CSI for one service cell is applied, the terminal device 1 sends a report on the CSI of only one service cell in each subframe. In a certain subframe, when the report of CSI of report type 3, 5, 6 or 2a of a certain service cell conflicts with the report of CSI of report type 1, 1a, 2, 2b, 2c or 4 of other service cells, and it is impossible to report all the conflicting CSIs at the same time in the applicable PUCCH format, the report of CSI of the latter (report type 1, 1a, 2, 2b, 2c or 4) is set as the report of CSI with lower priority of the reporting type. In a certain subframe, when the report of CSI of report type 2, 2b, 2c or 4 of a certain service cell conflicts with the report of CSI of report type 1 or 1a of other service cells, and it is impossible to report all the conflicting CSIs at the same time in the applicable PUCCH format, the report of CSI of the latter (report type 1 or 1a) is set as the report of CSI with lower priority of the reporting type.

[0281] In multiple service cells of a certain subframe, a configurable transmission mode (for example, transmission modes 1 to 9) is set for CSI processing. When conflicts occur in CSI reports of different service cells and reporting types of the same priority, and all conflicting CSIs cannot be reported simultaneously in the applicable PUCCH format, the terminal device 1 sets the CSI report of the service cell with a larger cell index set by the upper layer as the CSI report of the service cell with a lower priority.

[0282] In multiple service cells of a certain subframe, multiple configurable transmission modes (for example, transmission mode 10) are set for CSI processing. When conflicts occur in CSI reports of different service cells, reporting types of the same priority level and CSI processing indexes, and all conflicting CSIs cannot be reported simultaneously in the applicable PUCCH format, the terminal device 1 sets the CSI report of the service cell with a larger cell index set by the upper layer as the CSI report of the service cell with a lower priority level.

[0283] In multiple service cells of a certain subframe, when multiple configurable transmission modes (for example, transmission mode 10) are set for CSI processing, and conflicts occur in reports of CSI with different service cells, reporting types of the same priority level and different CSI processing indices, and all the conflicting CSIs cannot be reported simultaneously in the applicable PUCCH format, the terminal device 1 sets the report of the CSI of the service cell to which the CSI processing with a larger CSI processing is attached as the report of the CSI with a lower priority level of the service cell.

[0284] In a certain subframe, a CSI report of a service cell in which one configurable transmission mode (for example, transmission modes 1 to 9) is set for CSI processing conflicts with a CSI report of a different service cell in which multiple configurable transmission modes (for example, transmission mode 10) are set for CSI processing, and when the reporting types of the CSIs of these service cells have the same priority and all the conflicting CSIs cannot be reported simultaneously in the applicable PUCCH format, with respect to the latter service cell's report of CSI with a CSI processing index greater than 1, the terminal device 1 sets the report of the CSI with the CSI processing with the larger CSI processing index as the report of the CSI with the CSI processing with a lower priority.

[0285] In addition, in a certain subframe, if the CSI report of a service cell in which one configurable transmission mode (for example, transmission modes 1 to 9) is set for CSI processing conflicts with the CSI report of a different service cell in which multiple configurable transmission modes (for example, transmission mode 10) are set for CSI processing and the CSI report index is 1, and if the priority of the CSI report types of these service cells is the same, the terminal device 1 will set the CSI report of the service cell with a larger cell index set by the upper layer as the CSI report of the service cell with a lower priority.

[0286] When multiple CSI reports conflict and all conflicting CSI cannot be reported simultaneously in the applied PUCCH format, the terminal device 1 discards the CSI report with a lower priority according to the rules shown above. It can be processed to discard the report starting from the low priority until the point where the remaining CSI reports that have not been discarded can be reported simultaneously in the applied PUCCH format, and then the discarding process is completed and the CSI reporting process is performed.

[0287] However, as mentioned above, when at least a portion of the conflicting multiple CSI reports include a report of the CSI in the CSI processing with the RI reference CSI processing and a report of the CSI in the CSI processing with the reference object, the report of the CSI in the CSI processing with the RI reference CSI processing may be discarded regardless of whether they can be reported simultaneously in the applied PUCCH format.

[0288] Next, an embodiment of the case where CSI reporting is performed in a plurality of uplink cells is described.

[0289] Figure 8 This is a schematic diagram of a case where CSI reporting is performed in at least two uplink cells. 32 serving cells are set on a downlink frequency, and CSI reporting is performed in a first uplink cell and a second uplink cell.

[0290] At this time, when the CSI of the serving cell of X cell in the first uplink cell and the report of the serving cell of Y cell in the second uplink cell are set or requested in a certain subframe, when the number of CSI reports X+Y transmitted in the subframe exceeds the prescribed value Z, the CSI report of the number of cells X transmitted in the first uplink cell and the CSI report of the number of cells Y transmitted in the second uplink cell are set / requested, and the one with the lower priority is discarded or not updated. That is, the CSI report of (X+Y)-Z is discarded or not updated.

[0291] The CSI report of the first uplink cell may be a periodic report sent through PUCCH or an aperiodic report sent through PUSCH. In addition, the CSI report of the first uplink cell may be a periodic report sent through PUCCH or an aperiodic report sent through PUSCH. In addition, the number of periodic CSI reports herein refers to the number of CSI reports included in the payload of PUCCH when one PUCCH is sent in a certain subframe. Similarly, the number of aperiodic CSI reports refers to the number of CSI reports included in the payload of PUCCH when one PUCCH is sent in a certain subframe. For example, two periodic CSI reports mean that the number of CSI reports sent periodically is 2.

[0292] Furthermore, X and Y may be not only the number of serving cells but also the number of CSI processes or the total number of serving cells and processes.

[0293] In the case where the first uplink cell reports CSI via PUCCH and the second uplink cell reports CSI via PUSCH, it may not be desirable to update all Y number of CSI reports except for the max(ZX, 0) number of CSI reports. In addition, at this time, the max(ZX, 0) number of CSI reports may be determined by the conflict rule (the report type) for periodic CSI reporting, and the serving cell index may be determined by the CSI processing index. The priorities may be as follows: (i) non-periodic CSI reports take precedence over periodic CSI reports; (ii) periodic CSI reports take precedence over non-periodic CSI reports; (iii) CSI reports of the PUCCH cell group of the primary cell take precedence over CSI reports of the PUCCH cell group of the secondary cell.

[0294] For example, when the prescribed number Z is set to 5 and two periodic CSI reports conflict with four aperiodic CSI reports, none of the CSI reports having a low priority and transmitted periodically are updated.

[0295] For example, when the specified number Z is set to 5 and two periodic CSI reports conflict with five aperiodic CSI reports, all periodic CSI reports may not be updated or may be discarded.

[0296] In the above process, non-periodic CSI reporting is prioritized, but when power is limited (when the required transmission power cannot be received at the target reception power for transmission), power can also be allocated preferentially in periodic CSI reporting.

[0297] The priority in the case of power limitation can be periodic and aperiodic CSI reporting of the primary cell group > periodic and aperiodic CSI reporting of the secondary cell group. In addition, the priority of whether to update CSI can also be set to periodic and aperiodic CSI reporting of the primary cell group > periodic and aperiodic CSI reporting of the secondary cell group.

[0298] When a periodic CSI report in the PCG conflicts with a periodic CSI report in the SCG and an aperiodic CSI report in the SCG, and a total of X number of periodic CSI reports in the PCG and Y number of aperiodic CSI reports in the SCG exceeds Z, the Y number of aperiodic CSI reports in the SCG are discarded, and a portion of the X number of periodic CSI reports or the Y number of aperiodic CSI reports in the SCG that exceed a specified number Z are not updated or discarded.

[0299] In the above, the method / processing related to the transmission of uplink control information is described with reference to the accompanying drawings, but the specific configuration is not limited to the above description, and also includes design changes within the scope that does not deviate from the gist of the present invention. In addition, the implementation method obtained by appropriately combining the above methods / processing described in this embodiment is also included in the technical scope of the present invention.

[0300] Hereinafter, the configuration of the device in this embodiment will be described.

[0301] Fig. 9 This is a schematic block diagram showing the configuration of the terminal device 1 according to the present embodiment. As shown in the figure, the terminal device 1 is configured to include: an upper layer processing unit 101, a control unit 103, a receiving unit 105, a transmitting unit 107, and a transmitting / receiving antenna 109. In addition, the upper layer processing unit 101 is configured to include: a wireless resource control unit 1011, a scheduling information interpretation unit 1013, and a channel state information (CSI) report control unit 1015. In addition, the receiving unit 105 is configured to include: a decoding unit 1051, a demodulation unit 1053, a demultiplexing unit 1055, a wireless receiving unit 1057, and a measuring unit 1059. In addition, the transmitting unit 107 is configured to include: a coding unit 1071, a modulation unit 1073, a multiplexing unit 1075, a wireless transmitting unit 1077, and an uplink reference signal generating unit 1079.

[0302] The upper layer processing unit 101 outputs uplink data (transport block) generated by user operation or the like to the transmission unit 107. In addition, the upper layer processing unit 101 performs processing of the medium access control (MAC) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, and the radio resource control (RRC) layer.

[0303] The radio resource control unit 1011 included in the upper layer processing unit 101 manages various setting information of the own device. In addition, the radio resource control unit 1011 generates information allocated to each channel of the uplink and outputs it to the transmission unit 107.

[0304] The scheduling information interpretation unit 1013 of the upper layer processing unit 101 interprets the DCI format (scheduling information) received via the receiving unit 105 , and based on the result of interpreting the DCI format, generates control information for controlling the receiving unit 105 and the sending unit 107 and outputs it to the control unit 103 .

[0305] The CSI report control unit 1015 instructs the measurement unit 1059 to derive channel state information (RI / PMI / CQI) associated with the CSI reference resource. The CSI report control unit 1015 instructs the transmission unit 107 to transmit RI / PMI / CQI. The CSI report control unit 1015 sets the settings used by the measurement unit 1059 when calculating the CQI.

[0306] The control unit 103 generates a control signal for controlling the receiving unit 105 and the transmitting unit 107 based on the control information from the upper layer processing unit 101. The control unit 103 outputs the generated control signal to the receiving unit 105 and the transmitting unit 107 to control the receiving unit 105 and the transmitting unit 107.

[0307] The receiving unit 105 separates, demodulates, and decodes a reception signal received from the base station device 3 via the transmission / reception antenna 109 in accordance with a control signal input from the control unit 103 , and outputs the decoded information to the upper layer processing unit 101 .

[0308] The wireless receiving unit 1057 converts (down-converts) the downlink signal received via the transmission / reception antenna 109 to an intermediate frequency, controls the amplification level in a manner to remove unnecessary frequency components and appropriately maintain the signal level, performs orthogonal demodulation based on the in-phase component and the orthogonal component of the received signal, and converts the orthogonal demodulated analog signal into a digital signal. The wireless receiving unit 1057 removes a portion corresponding to the guard interval (GI) from the converted digital signal, and performs a fast Fourier transform (FFT) on the signal after the guard interval is removed to extract a signal in the frequency domain.

[0309] The demultiplexing unit 1055 separates the extracted signals into PHICH, PDCCH, EPDCCH, PDSCH, and downlink reference signals. In addition, the demultiplexing unit 1055 compensates for the propagation paths of PHICH, PDCCH, EPDCCH, and PDSCH based on the estimated values ​​of the propagation paths input from the measuring unit 1059. In addition, the demultiplexing unit 1055 outputs the separated downlink reference signal to the measuring unit 1059.

[0310] The demodulation unit 1053 synthesizes the PHICH by multiplying the corresponding symbol, and demodulates the synthesized signal using the BPSK (Binary Phase Shift Keying) modulation method and outputs it to the decoding unit 1051. The decoding unit 1051 decodes the PHICH sent to its own device, and outputs the decoded HARQ indicator to the upper layer processing unit 101. The demodulation unit 1053 demodulates the PDCCH and / or EPDCCH using the QPSK modulation method and outputs it to the decoding unit 1051. The decoding unit 1051 attempts to decode the PDCCH and / or EPDCCH, and if the decoding is successful, outputs the decoded downlink control information and the RNTI corresponding to the downlink control information to the upper layer processing unit 101.

[0311] The demodulation unit 1053 demodulates the PDSCH using a modulation method notified by a downlink grant such as QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), and 64QAM, and outputs the demodulated data to the decoding unit 1051. The decoding unit 1051 performs decoding based on information related to the coding rate notified by the downlink control information, and outputs the decoded downlink data (transport block) to the upper layer processing unit 101.

[0312] The measurement unit 1059 performs downlink path loss measurement, channel measurement, and / or interference measurement based on the downlink reference signal input from the demultiplexing unit 1055. The measurement unit 1059 outputs the CSI calculated based on the measurement result and the measurement result to the upper layer processing unit 101. In addition, the measurement unit 1059 calculates the estimated value of the downlink propagation path based on the downlink reference signal and outputs it to the demultiplexing unit 1055.

[0313] The sending unit 107 generates an uplink reference signal according to the control signal input from the control unit 103, encodes and modulates the uplink data (transmission block) input from the upper layer processing unit 101, multiplexes the PUCCH, PUSCH and the generated uplink reference signal, and sends it to the base station device 3 via the sending / receiving antenna 109.

[0314] The coding unit 1071 codes uplink control information and uplink data input from the upper layer processing unit 101. The modulation unit 1073 modulates the coded bits input from the coding unit 1071 using a modulation method such as BPSK, QPSK, 16QAM, or 64QAM.

[0315] The uplink reference signal generation unit 1079 generates a sequence obtained by a pre-set rule (formula) based on a physical cell identifier (called physical cell identity: PCI, Cell ID, etc.) used to identify the base station device 3, the bandwidth of the configured uplink reference signal, the cyclic shift notified by the uplink authorization, and the parameter value for generating the DMRS sequence.

[0316] The modulation unit 1073 determines the number of spatially multiplexed PUSCH layers based on the scheduling information for the PUSCH, maps multiple uplink data transmitted by the same PUSCH to multiple layers using MIMO SM (Multiple Input Multiple Output Spatial Multiplexing), and precodes the layers.

[0317] The multiplexing unit 1075 performs a discrete Fourier transform (DFT) on the modulation symbol of the PUSCH according to the control signal input from the control unit 103. In addition, the multiplexing unit 1075 multiplexes the signals of the PUCCH and PUSCH and the generated uplink reference signal according to the transmit antenna port. That is, the multiplexing unit 1075 configures the signals of the PUCCH and PUSCH and the generated uplink reference signal to the resource element according to the transmit antenna port.

[0318] The wireless transmitting unit 1077 performs inverse fast Fourier transform (IFFT) on the multiplexed signal to perform SC-FDMA modulation, and adds a guard interval to the SC-FDMA symbol after SC-FDMA modulation to generate a baseband digital signal, converts the baseband digital signal into an analog signal, and generates an in-phase component and an orthogonal component of an intermediate frequency from the analog signal, removes redundant frequency components for the intermediate rate band, converts the intermediate frequency signal (up converts) into a high-frequency signal, removes redundant frequency components to amplify the power, outputs and sends it to the transmitting / receiving antenna 109.

[0319] Fig.10 1 is a schematic block diagram showing the configuration of the base station device 3 according to the present embodiment. As shown in the figure, the base station device 3 is configured to include: an upper layer processing unit 301, a control unit 303, a receiving unit 305, a transmitting unit 307, and a transmitting / receiving antenna 309. In addition, the upper layer processing unit 301 is configured to include: a wireless resource control unit 3011, a scheduling unit 3013, and a CSI report control unit 3015. In addition, the receiving unit 305 is configured to include: a decoding unit 3051, a demodulation unit 3053, a demultiplexing unit 3055, a wireless receiving unit 3057, and a measuring unit 3059. In addition, the transmitting unit 307 is configured to include: a coding unit 3071, a modulation unit 3073, a multiplexing unit 3075, a wireless transmitting unit 3077, and a downlink reference signal generating unit 3079.

[0320] The upper layer processing unit 301 performs processing on the medium access control (MAC) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, and the radio resource control (RRC) layer. In addition, the upper layer processing unit 301 generates control information for controlling the receiving unit 305 and the transmitting unit 307 and outputs it to the control unit 303.

[0321] The radio resource control unit 3011 included in the upper layer processing unit 301 generates downlink data (transport blocks), system information, RRC messages, MAC CE (Control Element), etc. configured in the downlink PDSCH, or obtains them from the upper node and outputs them to the transmission unit 307. In addition, the radio resource control unit 3011 manages various setting information of each terminal device 1.

[0322] The scheduling unit 3013 included in the upper layer processing unit 301 determines the frequency and subframe of the physical channel (PDSCH and PUSCH), the coding rate and modulation method of the physical channel (PDSCH and PUSCH), the transmission power, etc., based on the received CSI and the estimated value of the propagation path input from the measurement unit 3059. The scheduling unit 3013 generates control information for controlling the receiving unit 305 and the transmitting unit 307 based on the scheduling result and outputs it to the control unit 303. The scheduling unit 3013 generates information (for example, DCI format) for scheduling the physical channel (PDSCH and PUSCH) based on the scheduling result.

[0323] The CSI report control unit 3015 included in the higher layer processing unit 301 controls CSI reporting of the terminal apparatus 1. The CSI report control unit 3015 transmits various settings assumed by the terminal apparatus 1 to derive RI / PMI / CQI from the CSI reference resource to the terminal apparatus 1 via the transmission unit 307.

[0324] The control unit 303 generates a control signal for controlling the receiving unit 305 and the transmitting unit 307 based on the control information from the upper layer processing unit 301. The control unit 303 outputs the generated control signal to the receiving unit 305 and the transmitting unit 307 to control the receiving unit 305 and the transmitting unit 307.

[0325] The receiving unit 305 separates, demodulates, and decodes the received signal received from the terminal device 1 via the transmitting / receiving antenna 309 according to the control signal input from the control unit 303, and outputs the decoded information to the upper layer processing unit 301. The wireless receiving unit 3057 converts (down-converts) the uplink signal received via the transmitting / receiving antenna 309 to an intermediate frequency, removes unnecessary frequency components, controls the amplification level in a manner to appropriately maintain the signal level, and performs orthogonal demodulation based on the in-phase component and the orthogonal component of the received signal, and converts the orthogonal demodulated analog signal into a digital signal.

[0326] The wireless receiving unit 3057 removes a portion corresponding to the guard interval (GI) from the converted digital signal, performs Fast Fourier Transform (FFT) on the signal after the guard interval is removed, extracts a frequency domain signal, and outputs the extracted signal to the demultiplexing unit 3055 .

[0327] The demultiplexing unit 1055 separates the signal input from the wireless receiving unit 3057 into signals such as PUCCH, PUSCH, and uplink reference signal. It should be noted that the separation is determined in advance by the base station device 3 through the wireless resource control unit 3011, and is performed based on the allocation information of the wireless resources included in the uplink grant notified to each terminal device 1. In addition, the demultiplexing unit 3055 compensates the propagation path of PUCCH and PUSCH based on the estimated value of the propagation path input from the measuring unit 3059. In addition, the demultiplexing unit 3055 outputs the separated uplink reference signal to the measuring unit 3059.

[0328] The demodulation unit 3053 performs an inverse discrete Fourier transform (IDFT) on the PUSCH to obtain modulation symbols, and demodulates the received signal using a modulation method that is preset such as BPSK (Binary Phase Shift Keying), QPSK, 16QAM, and 64QAM, or that is notified in advance to each terminal device 1 by the own device through an uplink grant. The demodulation unit 3053 separates the modulation symbols of a plurality of uplink data transmitted through the same PUSCH by using MIMO SM, based on the number of sequences of spatial multiplexing notified in advance to each terminal device 1 through an uplink grant and information indicating precoding of the sequence.

[0329] The decoding unit 3051 decodes the coded bits of the demodulated PUCCH and PUSCH using a coding rate that is preset in a preset coding method or that is notified in advance to the terminal device 1 by the device itself through an uplink grant, and outputs the decoded uplink data and uplink control information to the upper layer processing unit 101. In the case of retransmitting the PUSCH, the decoding unit 3051 performs decoding using the coded bits stored in the HARQ buffer input from the upper layer processing unit 301 and the demodulated coded bits. The measuring unit 3059 measures the estimated value of the propagation path, the quality of the channel, etc. based on the uplink reference signal input from the demultiplexing unit 3055, and outputs it to the demultiplexing unit 3055 and the upper layer processing unit 301.

[0330] The sending 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 upper layer processing unit 301, multiplexes PHICH, PDCCH, EPDCCH, PDSCH and downlink reference signal, and sends the signal to the terminal device 1 via the sending / receiving antenna 309.

[0331] The coding unit 3071 codes the HARQ indicator, downlink control information, and downlink data input from the upper layer processing unit 301. The modulation unit 3073 modulates the coded bits input from the coding unit 3071 using a modulation method such as BPSK, QPSK, 16QAM, and 64QAM.

[0332] The downlink reference signal generation unit 3079 generates, as a downlink reference signal, a sequence known to the terminal device 1 , which is obtained by a rule set in advance based on a physical cell identifier (PCI) for identifying the base station device 3 , etc.

[0333] The multiplexing unit 3075 maps one or more downlink data sent through one PUSCH to one or more layers according to the number of layers of the spatially multiplexed PDSCH, and precodes the one or more layers. The multiplexing unit 3075 multiplexes the downlink physical channel and the downlink reference signal according to the transmit antenna port. The multiplexing unit 3075 configures the signal of the downlink physical channel and the downlink reference signal to the resource element according to the transmit antenna port.

[0334] The wireless transmission unit 3077 performs inverse fast Fourier transform (IFFT) on the multiplexed modulation symbols to perform OFDM modulation, adds a guard interval to the OFDM symbols after OFDM modulation to generate a baseband digital signal, converts the baseband digital signal into an analog signal, and generates an in-phase component and an orthogonal component of an intermediate frequency based on the analog signal, removes unnecessary frequency components in the intermediate frequency band, converts (up converts) the intermediate frequency signal into a high-frequency signal, removes unnecessary frequency components to amplify the power, outputs and sends it to the transmitting / receiving antenna 309.

[0335] (1) More specifically, the terminal device 1 in the first scheme of the present invention may be a terminal device 1 comprising: a receiving unit, which receives first information of one or more first channel state information reports on a physical uplink channel in a first service cell from a base station device, and receives second information of multiple second channel state information reports on a physical uplink channel in a second service cell from the base station device; and a sending unit, which performs the first channel state information report and the second channel state information report, wherein the total number of the first channel state information reports and the number of the second channel state information reports in a first subframe does not exceed a prescribed number, and the total number of the first channel state information reports in a second subframe and the number of the second channel state information reports in a third subframe exceeds the prescribed number.

[0336] (2) In the above-mentioned first scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0337] (3) The terminal device 1 in the second scheme of the present invention may be the following terminal device 1, which comprises: a receiving unit, which receives first information of one or more first channel state information reports on a physical uplink channel in a first service cell from a base station device, and receives second information of multiple second channel state information reports on a physical uplink channel in a second service cell from the base station device; and a sending unit, which performs the first channel state information report and the second channel state information report, and discards the one or more first channel state information reports and a second specified number of channel state information reports in the multiple second channel state information reports when the total number of the first channel state information reports and the number of the second channel state information reports in a first subframe exceeds a first specified number, wherein the second specified number is a number obtained by subtracting the first specified number from the total number of the one or more first channel state information reports and the number of the multiple second channel state information reports.

[0338] (4) In the above-mentioned second scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0339] (5) In the above second scheme, it may be that: the discarded channel state information report is determined based on a priority, and the priority is based on the periodic (Periodic) channel state information report or the aperiodic (Aperiodic) channel state information report.

[0340] (6) In the above second scheme, it may be that: the discarded channel state information report is determined based on the priority of the cell group, and the cell group is a first cell group including the primary cell and a second cell group not including the primary cell.

[0341] (7) In the above-mentioned second scheme, it may be: third information of one or more third channel state information reports on the physical uplink channel in the first service cell is received from the base station device, the sending unit performs the third channel state information report, and when the first channel state information report and the third channel state information report conflict in the second subframe, all channel state information reports of either the first channel state information report or the third channel state information report are discarded, one of the first channel state information report and the third channel state information report is a periodic channel state information report, and the other of the first channel state information report and the third channel state information report is an aperiodic channel state information report.

[0342] (8) The terminal device 1 in the third scheme of the present invention may be the following terminal device 1, which comprises: a receiving unit, which receives first information of one or more first channel state information reports corresponding to one or more first channel state information processing on a physical uplink channel in a first service cell from a base station device, and receives second information of multiple second channel state information reports corresponding to multiple second channel state information processing on a physical uplink channel in a second service cell from the base station device; and a sending unit, which performs the first channel state information report and the second channel state information report, wherein the total number of the first channel state information reports and the number of the second channel state information reports in a first subframe does not exceed a specified number, and the total number of the first channel state information reports in the second subframe and the number of the second channel state information reports in a third subframe exceeds the specified number.

[0343] (9) In the above-mentioned third scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0344] (10) The terminal device 1 in the fourth scheme of the present invention may include: a receiving unit, which receives first information of one or more first channel state information reports corresponding to one or more first channel state information processing on a physical uplink channel in a first service cell from a base station device, and receives second information of multiple second channel state information reports corresponding to multiple second channel state information processing on a physical uplink channel in a second service cell from the base station device; and a sending unit, which performs the one or more first channel state information reports and the multiple second channel state information reports, and discards the one or more first channel state information reports and a second specified number of channel state information reports in the multiple second channel state information reports when the total number of the first channel state information reports and the number of the second channel state information reports in a first subframe exceeds a first specified number, wherein the second specified number is a number obtained by subtracting the first specified number from the total number of the one or more first channel state information reports and the number of the multiple second channel state information reports.

[0345] (11) In the above-mentioned fourth scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0346] (12) In the above fourth scheme, it may be that: the discarded channel state information report is determined based on a priority, and the priority is based on the periodic (Periodic) channel state information report or the aperiodic (Aperiodic) channel state information report.

[0347] (13) In the fourth scheme described above, it may be that: the discarded channel state information report is determined based on the priority of a cell group, and the cell group is a first cell group including a primary cell and a second cell group not including the primary cell.

[0348] (14) In the above-mentioned fourth scheme, it may be that: the receiving unit receives the third information of one or more third channel state information reports corresponding to one or more third channel state information processing on the physical uplink channel in the first service cell from the base station device, and the sending unit performs the third channel state information report. When a conflict occurs between the first channel state information report and the third channel state information report in the second subframe, all channel state information reports of either the first channel state information report or the third channel state information report are discarded, and one of the first channel state information report and the third channel state information report is a periodic channel state information report, and the other of the first channel state information report and the third channel state information report is an aperiodic channel state information report.

[0349] (15) The base station device 3 in the fifth scheme of the present invention may include: a sending unit, which sends first information of one or more first channel state information reports on a physical uplink channel in a first service cell to a terminal device, and sends second information of multiple second channel state information reports on a physical uplink channel in a second service cell to the terminal device; and a receiving unit, which receives the first channel state information report and receives the second channel state information report, wherein the total number of the first channel state information reports and the number of the second channel state information reports in a first subframe does not exceed a prescribed number, and the total number of the first channel state information reports in a second subframe and the number of the second channel state information reports in a third subframe exceeds the prescribed number.

[0350] (16) In the above-mentioned fifth scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0351] (17) The base station device 3 in the sixth scheme of the present invention may include: a sending unit, which sends first information of one or more first channel state information reports on a physical uplink channel in a first service cell to a terminal device, and sends second information of multiple second channel state information reports on a physical uplink channel in a second service cell to the terminal device; and a receiving unit, which receives the first channel state information report and receives the second channel state information report, and discards the one or more first channel state information reports and a second specified number of channel state information reports in the multiple second channel state information reports when the total number of the first channel state information reports and the number of the second channel state information reports in a first subframe exceeds a first specified number, wherein the second specified number is a number obtained by subtracting the first specified number from the total number of the one or more first channel state information reports and the number of the multiple second channel state information reports.

[0352] (18) In the above-mentioned sixth scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0353] (19) In the above-mentioned sixth scheme, it may be that: the discarded channel state information report is determined based on a priority, and the priority is based on the periodic (Periodic) channel state information report or the aperiodic (Aperiodic) channel state information report.

[0354] (20) In the sixth scheme described above, it may be that: the discarded channel state information report is determined based on the priority of a cell group, and the cell group is a first cell group including a primary cell and a second cell group not including the primary cell.

[0355] (21) In the above-mentioned sixth scheme, it may be that: the sending unit sends third information for one or more third channel state information reports on the physical uplink channel in the first service cell to the terminal device, and the receiving unit receives the third channel state information report. When the first channel state information report and the third channel state information report conflict in the second subframe, all channel state information reports of either the first channel state information report or the third channel state information report are discarded, and one of the first channel state information report and the third channel state information report is a periodic (Periodic) channel state information report, and the other of the first channel state information report and the third channel state information report is an aperiodic (Aperiodic) channel state information report.

[0356] (22) The base station device 3 in the seventh scheme of the present invention may be a base station device comprising: a sending unit, which sends first information of one or more first channel state information reports corresponding to one or more first channel state information processing on a physical uplink channel in a first service cell to a terminal device, and sends second information of multiple second channel state information reports corresponding to multiple second channel state information processing on a physical uplink channel in a second service cell to the terminal device; and a receiving unit, which receives the first channel state information report and receives the second channel state information report, wherein the total number of the first channel state information reports and the number of the second channel state information reports in a first subframe does not exceed a prescribed number, and the total number of the first channel state information reports in a second subframe and the number of the second channel state information reports in a third subframe exceeds the prescribed number.

[0357] (23) In the above-mentioned seventh scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0358] (24) The base station device 3 in the eighth scheme of the present invention may include: a sending unit, which sends first information of one or more first channel state information reports corresponding to one or more first channel state information processing on a physical uplink channel in a first service cell to a terminal device, and sends second information of multiple second channel state information reports corresponding to multiple second channel state information processing on a physical uplink channel in a second service cell to the terminal device; and a receiving unit, which receives the one or more first channel state information reports and receives the multiple second channel state information reports, and discards the one or more first channel state information reports and a second specified number of channel state information reports in the multiple second channel state information reports when the total number of the first channel state information reports and the number of the second channel state information reports in a first subframe exceeds a first specified number, wherein the second specified number is a number obtained by subtracting the first specified number from the total number of the one or more first channel state information reports and the number of the multiple second channel state information reports.

[0359] (25) In the above-mentioned eighth scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0360] (26) In the above-mentioned eighth scheme, it may be that: the discarded channel state information report is determined based on a priority, and the priority is based on the periodic (Periodic) channel state information report or the aperiodic (Aperiodic) channel state information report.

[0361] (27) In the eighth scheme described above, it may be that: the discarded channel state information report is determined based on the priority of a cell group, and the cell group is a first cell group including a primary cell and a second cell group not including the primary cell.

[0362] (28) In the above-mentioned eighth scheme, it may be that: the sending unit sends the third information of one or more third channel state information reports corresponding to one or more third channel state information processing on the physical uplink channel in the first service cell to the terminal device, and the receiving unit receives the third channel state information report. In the case that the first channel state information report and the third channel state information report conflict with each other in the second subframe, all channel state information reports of either the first channel state information report or the third channel state information report are discarded, and one of the first channel state information report and the third channel state information report is a periodic channel state information report, and the other of the first channel state information report and the third channel state information report is an aperiodic channel state information report.

[0363] (29) The terminal device 1 in the ninth scheme of the present invention may include: a receiving unit, which receives first information of one or more first channel state information reports on a physical uplink channel in a first service cell from a base station device, and receives second information of multiple second channel state information reports on a physical uplink channel in a second service cell from the base station device; and a sending unit, which performs the one or more first channel state information reports and the multiple second channel state information reports, and does not update the one or more first channel state information reports and the second specified number of channel state information reports in the multiple second channel state information reports when the total number of the one or more first channel state information reports and the multiple second channel state information reports in the first subframe exceeds a first specified number, wherein the second specified number is a number obtained by subtracting the first specified number from the sum of the number of the one or more first channel state information reports and the number of the multiple second channel state information reports.

[0364] (30) In the above-mentioned ninth scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0365] (31) In the above-mentioned ninth scheme, it may be that: the unupdated channel state information report is determined based on a priority, and the priority is based on the periodic (Periodic) channel state information report or the aperiodic (Aperiodic) channel state information report.

[0366] (32) In the ninth scheme described above, the unupdated channel state information report may be determined based on the priority of a cell group, wherein the cell group is a first cell group including a primary cell and a second cell group not including the primary cell.

[0367] (32) In the above-mentioned ninth scheme, it may be that: the receiving unit receives third information of one or more third channel state information reports on the physical uplink channel in the first service cell from the base station device, and the sending unit performs the third channel state information report. When a conflict occurs between the first channel state information report and the third channel state information report in the second subframe, all channel state information reports of either the first channel state information report or the third channel state information report are discarded, and one of the first channel state information report and the third channel state information report is a periodic channel state information report, and the other of the first channel state information report and the third channel state information report is an aperiodic channel state information report.

[0368] (33) The terminal device 1 in the tenth scheme of the present invention may include: a receiving unit, which receives first information for sending one or more first channel state information corresponding to one or more first channel state information processing on a physical uplink channel in a first service cell from a base station device, and receives second information for sending multiple second channel state information corresponding to multiple second channel state information processing on a physical uplink channel in a second service cell from a base station device; and a sending unit, which sends the one or more first channel state information and sends the multiple second channel state information, and in the first subframe in which the sending of the one or more first channel state information conflicts with the sending of the multiple second channel state information, if the total number of the one or more first channel state information processing and the multiple second channel state information processing exceeds a first prescribed number, the channel state information corresponding to a second prescribed number of channel state information processing in the one or more first channel state information processing and the multiple second channel state information processing is not updated, wherein the second prescribed number is a number obtained by subtracting the first prescribed number from the sum of the number of the one or more first channel state information processing and the number of the multiple second channel state information processing.

[0369] (34) In the above-mentioned tenth scheme, it may be that: the one or more first channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports, and the multiple second channel state information reports are periodic (Periodic) channel state information reports or non-periodic (Aperiodic) channel state information reports.

[0370] (35) In the above-mentioned tenth scheme, it may be that: the unupdated channel state information report is determined based on a priority, and the priority is based on the periodic (Periodic) channel state information report or the aperiodic (Aperiodic) channel state information report.

[0371] (36) In the above-mentioned tenth scheme, it may be that: the unupdated channel state information report is determined based on the priority of the cell group, and the cell group is a first cell group including the main cell and a second cell group not including the main cell.

[0372] (37) In the above-mentioned tenth scheme, it may be that: the receiving unit receives the third information of one or more third channel state information reports corresponding to one or more third channel state information processing on the physical uplink channel in the first service cell from the base station device, and the sending unit performs the third channel state information report. When a conflict occurs between the first channel state information report and the third channel state information report in the second subframe, all channel state information reports of either the first channel state information report or the third channel state information report are discarded, and one of the first channel state information report and the third channel state information report is a periodic channel state information report, and the other of the first channel state information report and the third channel state information report is an aperiodic channel state information report.

[0373] In this way, uplink control information can be efficiently transmitted.

[0374] The programs for the base station device 3 and the terminal device 1 to perform actions according to the several schemes of the present invention may be programs for controlling the CPU (Central Processing Unit) and the like to realize the functions of the above-mentioned embodiments of the present invention (programs for making the computer function). Furthermore, the information processed by these devices is temporarily stored in the RAM (Random Access Memory) during the processing, and then stored in various ROMs such as the Flash ROM (Read Only Memory) and the HDD (Hard Disk Drive), and is read, modified, and written by the CPU as needed.

[0375] It should be noted that a part of the terminal device 1 and the base station device 3 in the above-mentioned embodiment can be implemented by a computer. In this case, the program for implementing the control function can be recorded on a computer-readable recording medium, and the program recorded on the recording medium can be read into the computer system and executed to implement it.

[0376] It should be noted that the "computer system" mentioned here refers to a computer system built into the terminal device 1 or the base station device 3, and adopts a computer system including hardware such as an OS and peripheral devices. In addition, "computer-readable recording medium" refers to removable media such as floppy disks, magneto-optical disks, ROMs, CD-ROMs, and storage devices such as hard disks built into the computer system.

[0377] Furthermore, "computer-readable recording media" may include: media that dynamically store programs for a short period of time, such as communication lines when sending programs via networks such as the Internet or communication lines such as telephone lines; media that store programs for a fixed period of time, such as volatile memories inside computer systems that serve as servers or clients in this case. In addition, the above-mentioned program may be a program for realizing a part of the functions described, or a program that can further realize the functions by combining the functions with programs already recorded in the computer system.

[0378] In addition, the base station device 3 in the above-mentioned embodiment can also be implemented as an aggregate (device group) composed of multiple devices. Each device constituting the device group can have a part or all of the functions or functional blocks of the base station device 3 in the above-mentioned embodiment. As a device group, it is sufficient to have all the functions or functional blocks of the base station device 3. In addition, the terminal device 1 in the above-mentioned embodiment can also communicate with the base station device as an aggregate.

[0379] Furthermore, the base station device 3 in the above embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network). Furthermore, the base station device 3 in the above embodiment may have a part or all of the functions of a higher node for eNodeB.

[0380] In addition, part or all of the terminal device 1 and the base station device 3 in the above-mentioned embodiment may be implemented as an LSI, which is typically an integrated circuit, or as a chipset. Each functional block of the terminal device 1 and the base station device 3 may be individually chip-based, or may be partially or entirely integrated to be chip-based. In addition, the method of integrated circuitization is not limited to LSI and may be implemented by a dedicated circuit or a general-purpose processor. In addition, in the case where a technology for integrated circuitization that replaces LSI emerges due to the advancement of semiconductor technology, an integrated circuit based on the technology may also be used.

[0381] In addition, in the above-mentioned embodiment, a terminal device is recorded as an example of a communication device, but the invention of the present application is not limited to this, and can also be applied to fixed or non-movable electronic devices installed indoors and outdoors, such as AV equipment, kitchen equipment, cleaning / washing equipment, air-conditioning equipment, office equipment, vending machines and other life equipment and other terminal devices or communication devices.

[0382] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the specific configuration is not limited to the embodiments, and also includes design changes within the scope of the gist of the present invention. In addition, the present invention can be modified in various ways within the scope indicated by the claims, and the embodiments obtained by appropriately combining the technical solutions disclosed in different embodiments are also included in the technical scope of the present invention. In addition, it also includes the configuration obtained by replacing the elements described in the above embodiments with the same effects.

[0383] Industrial Applicability

[0384] Some aspects of the present invention can be applied to a terminal device, a base station device, a communication method, an integrated circuit, etc., which need to efficiently perform reporting of channel state information in an uplink.

[0385] Explanation of symbols

[0386] 1(1A, 1B, 1C) terminal device

[0387] 3 Base station equipment

[0388] 101 Upper layer processing unit

[0389] 103 Control Department

[0390] 105 Receiving Department

[0391] 107 Sending Department

[0392] 301 Upper processing unit

[0393] 303 Control Department

[0394] 305 Receiving Department

[0395] 307 Sending Department

[0396] 1011 Radio Resource Control Unit

[0397] 1013 Dispatch Information Interpretation Department

[0398] 1015 Channel status information reporting control unit

[0399] 3011 Radio Resource Control Unit

[0400] 3013 Dispatching Department

[0401] 3015 Channel status information reporting control unit

Claims

1. A terminal device, comprising: a receiving unit configured to receive information for one or more first channel state information (CSI) reports and one or more second CSI reports from a base station apparatus; and A sending unit, the sending unit is configured to send the first CSI report and send the second CSI report, wherein: The terminal device is configured to: In a case where the total of the number of the first CSI reports and the number of the second CSI reports exceeds a first prescribed number, at least the first prescribed number in the one or more first CSI reports and the one or more second CSI reports is updated, wherein the one or more first CSI reports are one or more aperiodic channel state information CSI reports, and the one or more second CSI reports are one or more periodic channel state information CSI reports, wherein the CSI report to be updated is determined based on a priority, and The priority is defined based on whether the report is an aperiodic CSI report or a periodic CSI report.

2. The terminal device according to claim 1, characterized in that A second specified number of the one or more first CSI reports and the one or more second CSI reports are discarded.

3. The terminal device according to claim 2, characterized in that: The second prescribed number is a number obtained by subtracting the first prescribed number from the total of the number of the one or more first CSI reports and the number of the one or more second CSI reports.

4. The terminal device according to any one of claims 2 and 3, characterized in that: The second specified number of CSI reports that are discarded are CSI reports with the lowest priority.

5. The terminal device according to claim 1, characterized in that: The receiving unit is configured to receive information for the one or more first CSI reports and the one or more second CSI reports from the base station apparatus via upper layer signaling, in particular, RRC signaling.

6. The terminal device according to claim 1, characterized in that: The one or more first CSI reports are CSI reports on a physical uplink channel, wherein the one or more second CSI reports are CSI reports on a physical uplink channel.

7. The terminal device according to claim 1, characterized in that: The terminal device is configured to perform aperiodic CSI reporting using PUSCH and / or to perform periodic CSI reporting using PUCCH or PUSCH.

8. The terminal device according to claim 1, characterized in that: The priority is determined based on a rule that prioritizes aperiodic CSI reporting over periodic CSI reporting.

9. The terminal device according to claim 1, characterized in that: At least the first specified number of CSI reports that are updated are CSI reports with the highest priority.

10. A communication method for a terminal device, the communication method comprising: receiving information for one or more first channel state information (CSI) reports and for one or more second CSI reports from a base station apparatus; and sending the first CSI report and sending the second CSI report, wherein: In a case where the total of the number of the first CSI reports and the number of the second CSI reports exceeds a first prescribed number, at least the first prescribed number of the one or more first CSI reports and the one or more second CSI reports is updated by the terminal device, wherein the one or more first CSI reports are one or more aperiodic channel state information CSI reports, and the one or more second CSI reports are one or more periodic channel state information CSI reports, wherein the CSI report to be updated is determined based on a priority, and The priority is defined based on whether the report is an aperiodic CSI report or a periodic CSI report.

11. A base station device, comprising: a transmitting unit configured to transmit information for one or more first channel state information (CSI) reports and for one or more second CSI reports to a terminal device; and a receiving unit, the receiving unit being configured to receive the first CSI report and the second CSI report, wherein In a case where the total of the number of the first CSI reports and the number of the second CSI reports exceeds a first prescribed number, at least the first prescribed number in the one or more first CSI reports and the one or more second CSI reports is updated, wherein the one or more first CSI reports are one or more aperiodic channel state information CSI reports, and the one or more second CSI reports are one or more periodic channel state information CSI reports, wherein the CSI report to be updated is determined based on a priority, and The priority is defined based on whether the report is an aperiodic CSI report or a periodic CSI report.

12. The base station device according to claim 11, characterized in that: The second specified number of CSI reports that are discarded are CSI reports with the lowest priority.

13. The base station device according to any one of claims 11 and 12, characterized in that: The sending unit is configured to send information for the one or more first CSI reports and the one or more second CSI reports to the terminal device via upper layer signaling, in particular, RRC signaling.

14. The base station device according to claim 11, characterized in that: The one or more first CSI reports are CSI reports on a physical uplink channel, wherein the one or more second CSI reports are CSI reports on a physical uplink channel.

15. The base station device according to claim 11, characterized in that: The base station apparatus is configured to receive an aperiodic CSI report using a PUSCH and / or receive a periodic CSI report using a PUCCH or a PUSCH.

16. The base station device according to claim 11, characterized in that: The priority is determined based on a rule that prioritizes aperiodic CSI reporting over periodic CSI reporting.

17. The base station device according to claim 11, characterized in that: At least the first specified number of CSI reports that are updated are CSI reports with the highest priority.

18. A communication method for a base station device, the communication method comprising: sending information for one or more first channel state information (CSI) reports and for one or more second CSI reports to a terminal device; as well as receiving the first CSI report and receiving the second CSI report, wherein In a case where the total of the number of the first CSI reports and the number of the second CSI reports exceeds a first prescribed number, at least the first prescribed number in the one or more first CSI reports and the one or more second CSI reports is updated, wherein the one or more first CSI reports are one or more aperiodic channel state information CSI reports, and the one or more second CSI reports are one or more periodic channel state information CSI reports, wherein the CSI report to be updated is determined based on a priority, and The priority is defined based on whether the report is an aperiodic CSI report or a periodic CSI report.

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