JP2017005398A - Terminal, communication method, and integrated circuit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure efficient communication between a terminal and a base station device, a wireless communication system to which TDD is applied.SOLUTION: When intermittent reception has been set, a terminal device monitors PDCCH in a PDCCH subframe during active time, and for a terminal device where a plurality of cells including at least two TDD cells are set, when te terminal device does not have an ability of simultaneous transmission and reception in a plurality of cells, each PDCCH subframe is a subframe specified as a downlink subframe or a subframe including DwPTS by the first upper layer parameters for the primary cell included in the plurality of cells, and/or a subframe specified as a downlink subframe by second upper layer parameters for the secondary cell included in the plurality of cells, and including the PRS.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a terminal device, a communication method, and an integrated circuit.

  The wireless access method and wireless network for cellular mobile communications (hereinafter referred to as “Long Term Evolution (LTE)” or “Evolved Universal Terrestrial Radio Access: EUTRA”) is a 3rd Generation Partnership Project: 3GPP). In LTE, an orthogonal frequency division multiplexing (OFDM) scheme is used in the downlink. In LTE, SC-FDMA (Single-Carrier Frequency Division Multiple Access) is used in the uplink. In LTE, a base station apparatus is also called eNodeB (evolved NodeB) and a mobile station apparatus is also called UE (User Equipment). LTE is a cellular communication system in which a plurality of areas covered by a base station apparatus are arranged in a cell shape. A single base station apparatus may manage a plurality of cells.

  LTE corresponds to Time Division Duplex (TDD). LTE employing the TDD scheme is also referred to as TD-LTE or LTE TDD. TDD is a technology that enables full duplex communication in a single frequency band by time-division multiplexing uplink and downlink signals.

  In 3GPP, traffic adaptation technology and interference mitigation technology (DL-UL Interference Management and Traffic Adaptation) that changes the ratio of uplink resources to downlink resources according to uplink traffic and downlink traffic are changed to TD-LTE. Application is under consideration.

  In Non-Patent Document 1, a method using a flexible subframe is presented as a method for realizing traffic adaptation. The base station apparatus can receive an uplink signal or transmit a downlink signal in a flexible subframe. In Non-Patent Document 1, the mobile station apparatus regards the flexible subframe as a downlink subframe unless the base station apparatus is instructed to transmit an uplink signal in the flexible subframe. This traffic adaptation technique is also referred to as dynamic TDD.

  In Non-Patent Document 1, HARQ (Hybrid Automatic Repeat reQuest) timing for PDSCH (Physical Downlink Shared Channel) is determined based on a newly introduced uplink-downlink configuration, and the first UL- It describes that the HARQ timing for PUSCH (Physical Uplink Shared Channel) is determined based on the DL configuration.

  In Non-Patent Document 2, (a) Introducing UL / DL Reference Configuration, (b) Some subframes are either uplink or downlink depending on dynamic grant / assignment from scheduler It is described that it can be scheduled.

  In LTE Release 10, a carrier aggregation technique in which a plurality of cells are set is introduced for a mobile station apparatus.

"On standardization impact of TDD UL-DL adaptation", R1-122016, Ericsson, ST-Ericsson, 3GPP TSG-RAN WG1 Meeting # 69, Prague, Czech Republic, 21st-25th May 2012. "Signaling support for dynamic TDD", R1-130558, Ericsson, ST-Ericsson, 3GPP TSG-RAN WG1 Meeting # 72, St Julian ’s, Malta, 28th January-1st February 2013.

  An object of the present invention is to optimize a DRX (discontinuous reception) function in a wireless communication system to which TDD is applied. Also, an object of the present invention is to provide a terminal device that efficiently communicates with a base station device by using the improved DRX function, a communication method used for the terminal device, and an improved DRX function for the terminal device. An integrated circuit to be executed, a base station device that communicates with the terminal device, a communication method used for the base station device, and an integrated circuit mounted on the base station device.

  (1) In order to achieve the above object, according to one aspect of the present invention, the following measures are taken. That is, the first aspect of the present invention is a terminal device, which is an intermittent reception control unit that controls monitoring of a PDCCH (Physical Downlink Control Channel) including a C-RNTI (Cell Radio Network Temporary Identifier); A receiver configured to monitor the PDCCH in a PDCCH subframe during an active time, and a terminal device configured with a plurality of serving cells including at least two TDD (Time Division duplex) serving cells. When the terminal apparatus does not have the capability of simultaneous transmission / reception in the plurality of serving cells, each of the PDCCH subframes is indicated by a first higher layer parameter for a primary cell included in the plurality of serving cells. Depending on uplink-downlink configuration A subframe configured as a subframe including a downlink subframe or a DwPTS (Downlink Pilot Time Slot) and / or a second uplink indicated by a second higher layer parameter for a secondary cell included in the plurality of serving cells It is a subframe that is set as a downlink subframe by link-downlink setting and includes PRS (Positioning Reference Signals).

  (2) Moreover, the 2nd aspect of this invention is a communication method used for a terminal device, Comprising: Monitoring of PDCCH (Physical Downlink Control Channel) containing C-RNTI (Cell Radio Network Temporary Identifier), When discontinuous reception is set, during the active time, the PDCCH is monitored in a PDCCH subframe, and for a terminal device in which a plurality of serving cells including at least two TDD (Time Division duplex) serving cells are set, When the terminal device does not have the capability of simultaneous transmission / reception in the plurality of serving cells, each of the PDCCH subframes is configured to be configured as an uplink-downlink indicated by a first higher layer parameter for a primary cell included in the plurality of serving cells. By downlink subframe Alternatively, the subframe configured as a subframe including a Downlink Pilot Time Slot (DwPTS) and / or the downlink by the uplink-downlink configuration indicated by the second higher layer parameter for the secondary cell included in the plurality of serving cells. It is a subframe that is set as a link subframe and includes PRS (Positioning Reference Signals).

  (3) Moreover, the 3rd aspect of this invention is an integrated circuit, Comprising: The function which controls monitoring of PDCCH (Physical Downlink Control Channel) containing C-RNTI (Cell Radio Network Temporary Identifier), and intermittent reception are When set, a plurality of serving cells including a function of monitoring the PDCCH in a PDCCH subframe during an active time, and having at least two TDD (Time Division duplex) serving cells If the terminal device does not have the capability of simultaneous transmission / reception in the plurality of serving cells, each of the PDCCH subframes is a first to a primary cell included in the plurality of serving cells. Uplink-downlink indicated by higher layer parameters Uplink indicated by the second higher layer parameter for the secondary cell included in the plurality of serving cells and / or the subframe configured as a subframe including a downlink subframe or DwPTS (Downlink Pilot Time Slot) by link setting It is a subframe that is set as a downlink subframe by link-downlink setting and includes PRS (Positioning Reference Signals).

  According to the present invention, power consumption of a terminal device can be optimized in a wireless communication system to which TDD is applied.

It is a conceptual diagram of the radio | wireless communications system of this embodiment. It is a figure which shows schematic structure of the radio | wireless frame of this embodiment. It is a figure which shows the structure of the slot of this embodiment. It is a figure which shows an example of arrangement | positioning of the physical channel and physical signal in the downlink sub-frame of this embodiment. It is a figure which shows an example of arrangement | positioning of the physical channel and physical signal in the uplink sub-frame of this embodiment. It is a figure which shows an example of arrangement | positioning of the physical channel and physical signal in the special sub-frame of this embodiment. It is a schematic block diagram which shows the structure of the mobile station apparatus 1 of this embodiment. It is a schematic block diagram which shows the structure of the base station apparatus 3 of this embodiment. It is a table | surface which shows an example of the uplink-downlink setting in this embodiment. It is a flowchart which shows the setting method of the 1st uplink reference UL-DL setting in this embodiment, and a 1st downlink reference UL-DL setting. It is a flowchart which shows the setting method of the 2nd uplink reference UL-DL setting in this embodiment. The pair formed by the 1st uplink reference UL-DL setting with respect to the other serving cell (primary cell) in this embodiment, and the 1st uplink reference UL-DL setting with respect to a serving cell (secondary cell), and secondary It is a figure which shows the response | compatibility of the 2nd uplink reference UL-DL setting with respect to a cell. It is a flowchart which shows the setting method of the 2nd downlink reference UL-DL setting in this embodiment. The first downlink reference UL-DL setting for the primary cell and the pair formed by the first downlink reference UL-DL setting for the secondary cell and the second downlink reference for the secondary cell in this embodiment It is a figure which shows the response | compatibility of UL-DL setting. It is a figure which shows the relationship between the sub-frame instruct | indicated by the 1st uplink reference UL-DL setting in this embodiment, and the sub-frame instruct | indicated by the 1st downlink reference UL-DL setting. In this embodiment, the subframe indicated by the first uplink reference UL-DL setting, the subframe indicated by the first downlink reference UL-DL setting, and the subframe indicated by the transmission direction UL-DL setting. It is a figure which shows the relationship. It is a figure which shows the relationship between the 1st uplink reference UL-DL setting in this embodiment, a 1st downlink reference UL-DL setting, and a transmission direction UL-DL setting. It is a figure which shows a response | compatibility with the sub-frame n by which PDCCH / EPDCCH / PHICH is arrange | positioned in this embodiment, and sub-frame n + k by which PUSCH to which said PDCCH / EPDCCH / PHICH respond | corresponds is arrange | positioned. It is a figure which shows a response | compatibility with the sub-frame n by which PHICH in this embodiment is arrange | positioned, and sub-frame nk by which PUSCH corresponding to the said PHICH is arrange | positioned. It is a figure which shows a response | compatibility with sub-frame n by which PUSCH in this embodiment is arrange | positioned, and sub-frame n + k by which PHICH corresponding to said PUSCH is arrange | positioned. The mobile station apparatus 1 specifies (selects and determines) the value of k according to the table of FIG. It is a figure which shows a response | compatibility with the sub-frame n by which PDSCH in this embodiment is arrange | positioned, and the sub-frame n by which HARQ-ACK corresponding to the said PDSCH is transmitted. It is a figure which shows an example of the DRX cycle in this embodiment. It is a flowchart which shows an example of DRX operation in this embodiment. It is a flowchart which shows an example of DRX operation in this embodiment. It is a figure which shows an example of the PDCCH sub-frame in this embodiment. It is a figure which shows an example of the PDCCH sub-frame in this embodiment. It is a figure which shows an example of the PDCCH sub-frame in this embodiment.

  Hereinafter, embodiments of the present invention will be described.

  In the present embodiment, a plurality of cells are set in the mobile station apparatus. A technique in which a mobile station apparatus communicates via a plurality of cells is referred to as cell aggregation or carrier aggregation. The present invention may be applied to each of a plurality of cells set for the mobile station apparatus. Further, the present invention may be applied to some of the plurality of set cells. A cell set in the mobile station apparatus is also referred to as a serving cell.

  The plurality of configured serving cells include one primary cell and one or more secondary cells. The primary cell is a serving cell in which an initial connection establishment procedure has been performed, a serving cell that has started a connection re-establishment procedure, or a cell designated as a primary cell in a handover procedure. The secondary cell may be set at the time when the RRC connection is established or afterwards.

  A TDD (Time Division Duplex) system is applied to the wireless communication system of the present embodiment. In the case of cell aggregation, the TDD scheme may be applied to all or some of the plurality of cells.

  When a plurality of cells to which TDD is applied are aggregated, a half-duplex TDD scheme or a full-duplex TDD scheme is applied.

  A half-duplex TDD mobile station apparatus cannot simultaneously perform uplink transmission and downlink reception in a plurality of cells to which TDD is applied. A half-duplex TDD mobile station apparatus does not have the ability to simultaneously perform uplink transmission and downlink reception in a plurality of cells having different UL-DL settings. In the case of half-duplex TDD, the mobile station apparatus does not transmit and receive simultaneously in one primary cell in a certain band or in one primary cell and one or more secondary cells in different bands.

  A full-duplex TDD mobile station apparatus can simultaneously perform uplink transmission and downlink reception in a plurality of cells to which TDD is applied. A full-duplex TDD mobile station apparatus has the ability to simultaneously perform uplink transmission and downlink reception in a plurality of cells having different UL-DL settings. In the case of full-duplex TDD, the mobile station apparatus can transmit and receive simultaneously in a plurality of serving cells in a plurality of different bands.

  The mobile station apparatus transmits information indicating a combination of bands for which carrier aggregation is supported by the mobile station apparatus, to the base station apparatus. For example, the mobile station apparatus transmits information indicating a combination of one or a plurality of bands that support TDD interband carrier aggregation to the base station apparatus. In TDD interband carrier aggregation, serving cells belonging to different TDD bands are aggregated. One band may include one or multiple serving cells.

  The mobile station apparatus transmits information indicating whether to support TDD interband carrier aggregation including a plurality of serving cells having different uplink-downlink configurations for each of one or a plurality of band combinations, to the base station It may be sent to the device. In the TDD (Time Division Duplex) inter-band carrier aggregation including a plurality of serving cells having different uplink-downlink settings, a plurality of serving cells having different uplink-downlink settings are aggregated.

  The mobile station apparatus transmits, to the base station apparatus, information on the capability of simultaneous transmission / reception in a plurality of serving cells belonging to each of one or a plurality of band combinations for each of one or a plurality of band combinations. Also good. Information on the capability of simultaneous transmission / reception in a plurality of serving cells belonging to each of the band combinations is defined for each of the one or more band combinations. The information regarding the capability of simultaneous transmission / reception in a plurality of serving cells belonging to a certain band combination may indicate whether or not a plurality of serving cells belonging to a certain band combination have the capability of simultaneous transmission / reception.

  When a cell to which TDD is applied and a cell to which FDD (Frequency Division Duplex) is applied are aggregated, the present invention can be applied to a cell to which TDD is applied.

  In the present embodiment, “X / Y” includes the meaning of “X or Y”. In the present embodiment, “X / Y” includes the meanings of “X and Y”. In the present embodiment, “X / Y” includes the meaning of “X and / or Y”.

  FIG. 1 is a conceptual diagram of the wireless communication system of the present embodiment. In FIG. 1, the radio communication system includes mobile station apparatuses 1 </ b> A to 1 </ b> C and a base station apparatus 3. Hereinafter, the mobile station apparatuses 1A to 1C are referred to as the mobile station apparatus 1.

  The physical channel and physical signal of this embodiment will be described.

In FIG. 1, the following uplink physical channels are used in uplink radio communication from the mobile station apparatus 1 to the base station apparatus 3. The uplink physical channel is used for transmitting information output from an upper layer.
-PUCCH (Physical Uplink Control Channel)
・ PUSCH (Physical Uplink Shared Channel)
・ PRACH (Physical Random Access Channel)

  The PUCCH is a physical channel used for transmitting uplink control information (UPCI). The uplink control information includes downlink channel state information (CSI), a scheduling request (SR) indicating a request for PUSCH resources, downlink data (Transport block, Downlink-Shared Channel: DL-SCH). ACK (acknowledgement) / NACK (negative-acknowledgement). ACK / NACK is also referred to as HARQ-ACK, HARQ feedback, or response information.

  The PUSCH is a physical channel used for transmitting uplink data (Uplink-Shared Channel: UL-SCH). The PUSCH may also be used to transmit HARQ-ACK and / or channel state information along with uplink data. Moreover, PUSCH may be used to transmit only channel state information, or only HARQ-ACK and channel state information.

  PRACH is a physical channel used for transmitting a random access preamble. The main purpose of the PRACH is that the mobile station device 1 synchronizes with the base station device 3 in the time domain. In addition, the PRACH also indicates an initial connection establishment procedure, a handover procedure, a connection re-establishment procedure, synchronization for uplink transmission (timing adjustment), and a PUSCH resource request. Used.

In FIG. 1, the following uplink physical signals are used in uplink wireless communication. The uplink physical signal is not used for transmitting information output from the upper layer, but is used by the physical layer.
・ Uplink Reference Signal (UL RS)

In this embodiment, the following two types of uplink reference signals are used.
DMRS (Demodulation Reference Signal)
・ SRS (Sounding Reference Signal)

  DMRS relates to transmission of PUSCH or PUCCH. DMRS is time-multiplexed with PUSCH or PUCCH. The base station apparatus 3 uses DMRS to perform propagation channel correction for PUSCH or PUCCH. Hereinafter, transmitting both PUSCH and DMRS is simply referred to as transmitting PUSCH. Hereinafter, transmitting both PUCCH and DMRS is simply referred to as transmitting PUCCH.

  SRS is not related to PUSCH or PUCCH transmission. The base station apparatus 3 uses SRS to measure the uplink channel state. The mobile station device 1 transmits the first SRS in the first resource set by the upper layer. Furthermore, when the mobile station apparatus 1 receives information indicating that transmission of SRS is requested via the PDCCH, the mobile station apparatus 1 transmits the second SRS only once in the second resource set by the higher layer. The first SRS is also referred to as a periodic SRS or a type 0 triggered SRS. The second SRS is also referred to as an aperiodic SRS or a type 1 triggered SRS. Transmission of aperiodic SRS is scheduled by information indicating that transmission of SRS is requested.

In FIG. 1, the following downlink physical channels are used in downlink radio communication from the base station apparatus 3 to the mobile station apparatus 1. The downlink physical channel is used for transmitting information output from an upper layer.
・ PBCH (Physical Broadcast Channel)
・ PCFICH (Physical Control Format Indicator Channel)
・ PHICH (Physical Hybrid automatic repeat request Indicator Channel)
・ PDCCH (Physical Downlink Control Channel)
・ EPDCCH (Enhanced Physical Downlink Control Channel)
・ PDSCH (Physical Downlink Shared Channel)
・ PMCH (Physical Multicast Channel)

  The PBCH is used to broadcast a master information block (Master Information Block: MIB, Broadcast Channel: BCH) commonly used in the mobile station apparatus 1. MIBs are transmitted at 40 ms intervals, and MIBs are repeatedly transmitted at 10 ms intervals. Specifically, MIB initial transmission is performed in subframe 0 in a radio frame satisfying SFN mod 4 = 0, and MIB retransmission (repetition) is performed in subframe 0 in all other radio frames. SFN (system frame number) is a radio frame number. MIB is system information. For example, the MIB includes information indicating SFN.

  PCFICH is used to transmit information indicating a region (OFDM symbol) used for transmission of PDCCH.

  The PHICH is used to transmit an HARQ indicator (HARQ feedback, response information) indicating ACK (ACKnowledgement) or NACK (Negative ACKnowledgement) for uplink data (Uplink Shared Channel: UL-SCH) received by the base station apparatus 3. It is done. For example, when the mobile station apparatus 1 receives a HARQ indicator indicating ACK, the corresponding uplink data is not retransmitted. For example, when the mobile station apparatus 1 receives a HARQ indicator indicating NACK, the corresponding uplink data is retransmitted. A single PHICH transmits a HARQ indicator for a single uplink data. The base station apparatus 3 transmits each of the HARQ indicators for a plurality of uplink data included in the same PUSCH using a plurality of PHICHs.

  PDCCH and EPDCCH are used for transmitting downlink control information (Downlink Control Information: DCI). The downlink control information is also referred to as a DCI format. The downlink control information includes a downlink grant (downlink grant) and an uplink grant (uplink grant). The downlink grant is also referred to as downlink assignment or downlink allocation.

  The downlink grant is used for scheduling a single PDSCH within a single cell. The downlink grant is used for scheduling the PDSCH in the same subframe as the subframe in which the downlink grant is transmitted. The uplink grant is used for scheduling a single PUSCH within a single cell. The uplink grant is used for scheduling a single PUSCH in a subframe that is four or more after the subframe in which the uplink grant is transmitted.

  A CRC (Cyclic Redundancy Check) parity bit is added to the DCI format. The CRC parity bit is scrambled by C-RNTI (Cell-Radio Network Temporary Identifier) or SPS C-RNTI (Semi Persistent Scheduling Cell-Radio Network Temporary Identifier). C-RNTI and SPS C-RNTI are identifiers for identifying a mobile station apparatus in a cell.

  C-RNTI is used to control PDSCH or PUSCH in a single subframe. The SPS C-RNTI is used for periodically allocating PDSCH or PUSCH resources.

  The PDSCH is used to transmit downlink data (Downlink Shared Channel: DL-SCH).

  The PMCH is used for transmitting multicast data (Multicast Channel: MCH).

In FIG. 1, the following downlink physical signals are used in downlink wireless communication. The downlink physical signal is not used for transmitting information output from the upper layer, but is used by the physical layer.
・ Synchronization signal (SS)
・ Downlink Reference Signal (DL RS)

  The synchronization signal is used for the mobile station apparatus 1 to synchronize the downlink frequency domain and time domain. 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.

  The downlink reference signal is used for the mobile station apparatus 1 to correct the propagation path of the downlink physical channel. The downlink reference signal is used for the mobile station apparatus 1 to calculate downlink channel state information.

In this embodiment, the following five types of downlink reference signals are used.
-CRS (Cell-specific Reference Signal)
-URS (UE-specific Reference Signal) related to PDSCH
DMRS (Demodulation Reference Signal) related to EPDCCH
NZP CSI-RS (Non-Zero Power Chanel State Information-Reference Signal)
・ ZP CSI-RS (Zero Power Chanel State Information-Reference Signal)
MBSFN RS (Multimedia Broadcast and Multicast Service over Single Frequency Network Reference signal)
・ PRS (Positioning Reference Signal)

  CRS is transmitted in all subframes. CRS is used to demodulate PBCH / PDCCH / PHICH / PCFICH / PDSCH. The CRS may be used for the mobile station apparatus 1 to calculate downlink channel state information. PBCH / PDCCH / PHICH / PCFICH is transmitted through an antenna port used for CRS transmission.

  The URS associated with the PDSCH is transmitted in subframes and bands used for transmission of the PDSCH associated with the URS. URS is used to demodulate the PDSCH with which the URS is associated.

  The PDSCH is transmitted through an antenna port used for transmission of CRS or URS. The DCI format 1A is used for scheduling of PDSCH transmitted through an antenna port used for CRS transmission. The DCI format 2D is used for scheduling of the PDSCH transmitted through the antenna port used for URS transmission.

  The DMRS associated with the EPDCCH is transmitted in subframes and bands used for transmission of the EPDCCH associated with the DMRS. DMRS is used to demodulate the EPDCCH with which DMRS is associated. The EPDCCH is transmitted through an antenna port used for DMRS transmission.

  The NZP CSI-RS is transmitted in the set subframe. The resource for transmitting the NZP CSI-RS is set by the base station apparatus. NZP CSI-RS is used for the mobile station apparatus 1 to calculate downlink channel state information.

  The base station apparatus sets ZP CSI-RS resources. The base station apparatus transmits ZP CSI-RS with zero output. That is, the base station apparatus does not transmit ZP CSI-RS. The base station apparatus does not transmit PDSCH and EPDCCH in the resource set by ZP CSI-RS. For example, the mobile station apparatus 1 can measure interference in a resource supported by NZP CSI-RS in a certain cell.

  The MBSFN RS is transmitted in the entire band of the subframe used for PMCH transmission. The MBSFN RS is used for PMCH demodulation. The PMCH is transmitted through an antenna port used for MBSFN RS transmission.

  The PRS may be used for measurement of RSTD (Reference Signal Time Difference). The RSTD is defined by a relative timing difference between the neighboring cell and the reference cell. The RSTD may be defined by a difference between a time when a start of one subframe is received from a neighboring cell and a time when a start of one subframe is received from a reference cell. The reference cell may be a primary cell or a secondary cell.

  The mobile station apparatus 1 reports the RSTD measurement to the base station apparatus 3. The base station apparatus 3 estimates the geographical position of the mobile station apparatus 1 based on the RSTD measurement report.

  The mobile station apparatus 1 receives information indicating the PRS setting in the reference cell and information indicating the PRS setting in the adjacent cell. The subframe including the PRS is given based on information indicating the PRS setting in the reference cell and information indicating the PRS setting in the adjacent cell. A subframe in which PRS is included is also referred to as a subframe in which PRS is set, a subframe with PRS, a PRS instance, and a PRS occasion.

  A subframe including a PRS is set by an upper layer. The PRS is transmitted only in the downlink subframe. PRS is not transmitted in DwPTS. PRS is not mapped to PBCH or resource elements assigned to synchronization signals.

  The downlink physical channel and the downlink physical signal are collectively referred to as a downlink signal. The uplink physical channel and the uplink physical signal are collectively referred to as an uplink signal. The downlink physical channel and the uplink physical channel are collectively referred to as a physical channel. The downlink physical signal and the uplink physical signal are collectively referred to as a physical signal.

  BCH, MCH, UL-SCH and DL-SCH are transport channels. A channel used in a medium access control (MAC) layer is referred to as a transport channel. A transport channel unit used in the MAC layer is also referred to as a transport block (TB) or a MAC PDU (Protocol Data Unit). In the MAC layer, HARQ (Hybrid Automatic Repeat reQuest) control is performed for each transport block. The transport block is a unit of data that the MAC layer delivers to the physical layer. In the physical layer, the transport block is mapped to a code word, and an encoding process is performed for each code word.

  Hereinafter, the configuration of the radio frame of the present embodiment will be described.

  FIG. 2 is a diagram illustrating a schematic configuration of a radio frame according to the present embodiment. Each radio frame is 10 ms long. In FIG. 2, the horizontal axis is a time axis. Each radio frame is composed of two half frames. Each half frame is 5 ms long. Each half frame is composed of 5 subframes. Each subframe is 1 ms long and is defined by two consecutive slots. Each of the slots is 0.5 ms long. The i-th subframe in the radio frame is composed of a (2 × i) th slot and a (2 × i + 1) th slot. That is, 10 subframes can be used in each 10 ms interval.

In this embodiment, the following three types of subframes are defined.
-Downlink subframe (first subframe)
-Uplink subframe (second subframe)
Special subframe (third subframe)

  The downlink subframe is a subframe reserved for downlink transmission. The uplink subframe is a subframe reserved for uplink transmission. The special subframe is composed of three fields. The three fields are DwPTS (Downlink Pilot Time Slot), GP (Guard Period), and UpPTS (Uplink Pilot Time Slot). The total length of DwPTS, GP, and UpPTS is 1 ms. DwPTS is a field reserved for downlink transmission. UpPTS is a field reserved for uplink transmission. GP is a field in which downlink transmission and uplink transmission are not performed. Note that the special subframe may be composed of only DwPTS and GP, or may be composed of only GP and UpPTS.

  A single radio frame includes at least a downlink subframe, an uplink subframe, and a special subframe.

  The wireless communication system of this embodiment supports 5 ms and 10 ms downlink-uplink switch-point periodicity. When the downlink-uplink switch point period is 5 ms, a special subframe is included in both half frames in the radio frame. When the downlink-uplink switch point period is 10 ms, a special subframe is included only in the first half frame in the radio frame.

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

  FIG. 3 is a diagram showing the configuration of the slot according to the present embodiment. The physical signal or physical channel transmitted in each of the slots is represented by a resource grid. In FIG. 3, the horizontal axis is a time axis, and the vertical axis is a frequency axis. In the downlink, the resource grid is defined by a plurality of subcarriers and a plurality of OFDM symbols. In the uplink, the resource grid is defined by a plurality of subcarriers and a plurality of SC-FDMA symbols. The number of subcarriers constituting one slot depends on the cell bandwidth. The number of OFDM symbols or SC-FDMA symbols constituting one slot is seven. Each element in the resource grid is referred to as a resource element. The resource element is identified using a subcarrier number and an OFDM symbol or SC-FDMA symbol number.

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

  Hereinafter, physical channels and physical signals transmitted in each subframe will be described.

  FIG. 4 is a diagram illustrating an example of the arrangement of physical channels and physical signals in the downlink subframe according to the present embodiment. In FIG. 4, the horizontal axis is a time axis, and the vertical axis is a frequency axis. The base station apparatus 3 may transmit a downlink physical channel (PBCH, PCFICH, PHICH, PDCCH, EPDCCH, PDSCH) and a downlink physical signal (synchronization signal, downlink reference signal) in the downlink subframe. . Note that PBCH is transmitted only in subframe 0 in the radio frame. The downlink reference signal is arranged in resource elements distributed in the frequency domain and the time domain. For simplicity of explanation, the downlink reference signal is not shown in FIG.

  In the PDCCH region, a plurality of PDCCHs may be frequency and time multiplexed. In the EPDCCH region, a plurality of EPDCCHs may be frequency, time, and space multiplexed. In the PDSCH region, a plurality of PDSCHs may be frequency and space multiplexed. The PDCCH and PDSCH or EPDCCH may be time multiplexed. PDSCH and EPDCCH may be frequency multiplexed.

  FIG. 5 is a diagram illustrating an example of an arrangement of physical channels and physical signals in the uplink subframe according to the present embodiment. In FIG. 5, the horizontal axis is the time axis, and the vertical axis is the frequency axis. The mobile station apparatus 1 may transmit an uplink physical channel (PUCCH, PUSCH, PRACH) and an uplink physical signal (DMRS, SRS) in the uplink subframe. In the PUCCH region, a plurality of PUCCHs are frequency, time, and code multiplexed. In the PUSCH region, a plurality of PUSCHs may be frequency and spatially multiplexed. PUCCH and PUSCH may be frequency multiplexed. The PRACH may be arranged over a single subframe or two subframes. A plurality of PRACHs may be code-multiplexed.

  The SRS is transmitted using the last SC-FDMA symbol in the uplink subframe. That is, the SRS is arranged in the last SC-FDMA symbol in the uplink subframe. The mobile station device 1 cannot simultaneously transmit SRS and PUCCH / PUSCH / PRACH in a single SC-FDMA symbol of a single cell. The mobile station apparatus 1 transmits PUSCH and / or PUCCH in a single uplink subframe of a single cell using an SC-FDMA symbol excluding the last SC-FDMA symbol in the uplink subframe. The SRS can be transmitted using the last SC-FDMA symbol in the uplink subframe. That is, in a single uplink subframe of a single cell, the mobile station apparatus 1 can transmit both SRS and PUSCH / PUCCH. DMRS is time-multiplexed with PUCCH or PUSCH. For simplicity of explanation, DMRS is not shown in FIG.

  FIG. 6 is a diagram illustrating an example of the arrangement of physical channels and physical signals in the special subframe according to the present embodiment. In FIG. 6, the horizontal axis is the time axis, and the vertical axis is the frequency axis. In FIG. 6, DwPTS is composed of the first to ninth SC-FDMA symbols in the special subframe, GP is composed of the tenth to twelfth SC-FDMA symbols in the special subframe, and UpPTS is the special subframe. It consists of the 13th and 14th SC-FDMA symbols in the frame.

  The base station apparatus 3 may transmit the PCFICH, PHICH, PDCCH, EPDCCH, PDSCH, synchronization signal, and downlink reference signal in the DwPTS of the special subframe. Base station apparatus 3 does not transmit PBCH in DwPTS of the special subframe. The mobile station apparatus 1 may transmit PRACH and SRS in the UpPTS of the special subframe. That is, the mobile station apparatus 1 does not transmit PUCCH, PUSCH, and DMRS in the UpPTS of the special subframe.

  FIG. 7 is a schematic block diagram showing the configuration of the mobile station apparatus 1 of the present embodiment. As illustrated, the mobile station apparatus 1 includes an upper layer processing unit 101, a control unit 103, a receiving unit 105, a transmitting unit 107, and a transmission / reception antenna 109. The upper layer processing unit 101 includes a radio resource control unit 1011, a subframe setting unit 1013, a scheduling information interpretation unit 1015, and a DRX (Discontinuous Reception) control unit 1017. The reception unit 105 includes a decoding unit 1051, a demodulation unit 1053, a demultiplexing unit 1055, a radio reception unit 1057, and a channel measurement unit 1059. The transmission unit 107 includes an encoding unit 1071, a modulation unit 1073, a multiplexing unit 1075, a radio transmission unit 1077, and an uplink reference signal generation unit 1079.

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

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

  The subframe setting unit 1013 included in the higher layer processing unit 101 includes a first uplink reference UL-DL configuration (Uplink reference configuration), a first downlink reference UL-DL configuration (Downlink reference configuration), and a second uplink reference configuration. It manages the link reference UL-DL configuration, the second downlink reference UL-DL configuration, and the transmission direction UL-DL configuration (transmission direction configuration).

  The subframe setting unit 1013 includes a first uplink reference UL-DL setting, a first downlink reference UL-DL setting, a second uplink reference UL-DL setting, and a second downlink reference UL-DL setting. And the transmission direction UL-DL setting is set.

  The scheduling information interpretation unit 1015 included in the upper layer processing unit 101 interprets the DCI format (scheduling information) received via the reception unit 105, and based on the interpretation result of the DCI format, the reception unit 105 and the transmission unit Control information is generated in order to perform the control of 107 and output to the control unit 103.

  The scheduling information interpretation unit 1015 further includes a first uplink reference UL-DL setting, a first downlink reference UL-DL setting, a second uplink reference UL-DL setting, and a second downlink reference UL- The timing for performing the transmission process and the reception process is determined based on the DL setting and / or the transmission direction UL-DL setting.

  The DRX control unit 1017 performs the first uplink reference UL-DL setting and / or the first downlink reference UL-DL setting and / or the second uplink reference UL-DL setting, and / or The PDCCH subframe is specified (selected, determined) based on the second downlink reference UL-DL configuration and / or the transmission direction UL-DL configuration.

  The DRX control unit 1017 performs DRX processing based on the PDCCH subframe. The DRX controller 1017 manages a timer related to DRX based on the PDCCH subframe.

  The DRX control unit 1017 instructs the reception unit 105 to monitor PDCCH / EPDCCH in the subframe. Monitoring PDCCH / EPDCCH means trying to decode PDCCH or EPDCCH according to a certain DCI format.

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

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

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

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

  Demodulation section 1053 multiplies the PHICH by a corresponding code and synthesizes, demodulates the synthesized signal using a BPSK (Binary Phase Shift Keying) modulation method, and outputs the result to decoding section 1051. Decoding section 1051 decodes the PHICH addressed to the own apparatus, and outputs the decoded HARQ indicator to higher layer processing section 101. Demodulation section 1053 performs QPSK modulation demodulation on PDCCH and / or EPDCCH, and outputs the result to decoding section 1051. Decoding section 1051 attempts to decode PDCCH and / or EPDCCH, and outputs the decoded downlink control information and the RNTI corresponding to the downlink control information to higher layer processing section 101 when the decoding is successful.

  Demodulation section 1053 demodulates the modulation scheme notified by downlink grants such as QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), and 64 QAM, and outputs the result to decoding section 1051. The decoding unit 1051 performs decoding based on the information regarding the coding rate notified by the downlink control information, and outputs the decoded downlink data (transport block) to the higher layer processing unit 101.

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

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

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

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

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

  Radio transmission section 1077 performs inverse fast Fourier transform (IFFT) on the multiplexed signal, performs SC-FDMA modulation, and adds a guard interval to the SC-FDMA-modulated SC-FDMA symbol. Generating a baseband digital signal, converting the baseband digital signal to an analog signal, generating an in-phase component and a quadrature component of an intermediate frequency from the analog signal, removing an extra frequency component for the intermediate frequency band, The intermediate frequency signal is converted to a high frequency signal (up convert), the excess frequency component is removed, the power is amplified, and output to the transmission / reception antenna 109 for transmission.

  FIG. 8 is a schematic block diagram illustrating the configuration of the base station device 3 of the present embodiment. As illustrated, the base station apparatus 3 includes an upper layer processing unit 301, a control unit 303, a reception unit 305, a transmission unit 307, and a transmission / reception antenna 309. The upper layer processing unit 301 includes a radio resource control unit 3011, a subframe setting unit 3013, a scheduling unit 3015, and a DRX control unit 3017. The reception unit 305 includes a decoding unit 3051, a demodulation unit 3053, a demultiplexing unit 3055, a wireless reception unit 3057, and a channel measurement unit 3059. The transmission unit 307 includes an encoding unit 3071, a modulation unit 3073, a multiplexing unit 3075, a radio transmission unit 3077, and a downlink reference signal generation unit 3079.

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

  The radio resource control unit 3011 included in the higher layer processing unit 301 generates downlink data (transport block), system information, RRC message, MAC CE (Control Element), etc. arranged in the downlink PDSCH, or higher layer. Obtained from the node and output to the transmission unit 307. Further, the radio resource control unit 3011 manages various setting information of each mobile station apparatus 1.

  The subframe setting unit 3013 included in the higher layer processing unit 301 includes a first uplink reference UL-DL setting, a first downlink reference UL-DL setting, a second uplink reference UL-DL setting, and a second The downlink reference UL-DL setting and the transmission direction UL-DL setting are managed for each mobile station apparatus 1.

  The subframe setting unit 3013 sets the first uplink reference UL-DL setting, the first downlink reference UL-DL setting, the second uplink reference UL-DL setting, for each of the mobile station apparatuses 1. A 2nd downlink reference UL-DL setting and a transmission direction UL-DL setting are set.

  The subframe setting unit 3013 includes first information indicating the first uplink reference UL-DL setting, second information indicating the first downlink reference UL-DL setting, and first information indicating the transmission direction UL-DL setting. 3 information is generated. The subframe setting unit 3013 transmits the first information, the second information, and the third information to the mobile station device 1 via the transmission unit 307.

  The base station apparatus 3 has a first uplink reference UL-DL setting, a first downlink reference UL-DL setting, a second uplink reference UL-DL setting, and a second downlink for the mobile station apparatus 1. A reference UL-DL configuration and / or a transmission direction UL-DL configuration may be determined. Moreover, the base station apparatus 3 is the 1st uplink reference UL-DL setting with respect to the mobile station apparatus 1, 1st downlink reference UL-DL setting, 2nd uplink reference UL-DL setting, 2nd The downlink reference UL-DL setting and / or the transmission direction UL-DL setting may be instructed from an upper node.

  For example, the subframe setting unit 3013 sets the first uplink reference UL-DL setting, the first downlink reference UL-DL setting, and the second uplink based on the uplink traffic volume and the downlink traffic volume. A link reference UL-DL configuration, a second downlink reference UL-DL configuration, and / or a transmission direction UL-DL configuration may be determined.

  The scheduling unit 3015 included in the higher layer processing unit 301 is configured to allocate a physical channel (PDSCH and PUSCH) based on a channel estimation value, a channel quality, and the like, which are input from the channel measurement unit 3059, and a physical channel (PDSCH). And the PUSCH) coding rate, modulation scheme, transmission power, and the like. The scheduling unit 3015 determines whether to schedule a downlink physical channel and / or downlink physical signal or schedule an uplink physical channel and / or uplink physical signal in a flexible subframe. Based on the scheduling result, scheduling section 3015 generates control information (for example, DCI format) for controlling receiving section 305 and transmitting section 307 and outputs the control information to control section 303.

  The scheduling unit 3015 generates information used for physical channel (PDSCH and PUSCH) scheduling based on the scheduling result. The scheduling unit 3015 further includes a first uplink reference UL-DL setting, a first downlink reference UL-DL setting, a second uplink reference UL-DL setting, and a second downlink reference UL-DL setting. And / or the timing for performing the transmission process and the reception process is determined based on the transmission direction UL-DL setting.

  The DRX control unit 3017 included in the higher layer processing unit 301 includes a first uplink reference UL-DL setting and / or a first downlink reference UL-DL setting and / or a second uplink reference UL. -PDCCH subframes are identified (selected, determined) based on DL configuration and / or second downlink reference UL-DL configuration and / or transmission direction UL-DL configuration.

  The DRX control unit 3017 manages a timer related to DRX based on the PDCCH subframe. The DRX control unit 3017 determines whether the mobile station apparatus 1 is monitoring PDCCH / EPDCCH in the subframe. The DRX control unit 3017 notifies the scheduling unit 3015 of the determined result.

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

  The receiving unit 305 separates, demodulates and decodes the received signal received from the mobile station apparatus 1 via the transmission / reception antenna 309 according to the control signal input from the control unit 303, and outputs the decoded information to the higher layer processing unit 301. To do. The radio reception unit 3057 converts an uplink signal received via the transmission / reception antenna 309 into an intermediate frequency (down covert), removes unnecessary frequency components, and appropriately maintains the signal level. In this way, the amplification level is controlled, and based on the in-phase and quadrature components of the received signal, quadrature demodulation is performed, and the quadrature demodulated analog signal is converted into a digital signal.

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

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

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

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

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

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

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

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

  Hereinafter, the first uplink reference UL-DL configuration (uplink reference uplink-downlink configuration), the first downlink reference UL-DL configuration (downlink reference uplink-downlink configuration), the second uplink reference UL-DL configuration The second downlink reference UL-DL configuration and the transmission direction UL-DL configuration (transmission direction uplink-downlink configuration) will be described.

  1st uplink reference UL-DL setting, 1st downlink reference UL-DL setting, 2nd uplink reference UL-DL setting, 2nd downlink reference UL-DL setting, and transmission direction UL- DL configuration is defined by uplink-downlink configuration (UL-DL configuration).

  The uplink-downlink setting is a setting related to a subframe pattern in a radio frame. The uplink-downlink setting indicates whether each of the subframes in the radio frame is a downlink subframe, an uplink subframe, or a special subframe.

  That is, the first uplink reference UL-DL setting, the second uplink reference UL-DL setting, the first downlink reference UL-DL setting, the second downlink reference UL-DL setting, and the transmission direction The UL-DL setting is defined by a pattern of a downlink subframe, an uplink subframe, and a special subframe in a radio frame.

  The patterns of the downlink subframe, the uplink subframe, and the special subframe are any of the subframes # 0 to # 9 that are a downlink subframe, an uplink subframe, and a special subframe. Preferably, it is expressed by an arbitrary combination having a length of 10 of D, U, and S (representing a downlink subframe, an uplink subframe, and a special subframe, respectively). More preferably, the top (that is, subframe # 0) is D and the second (that is, subframe # 1) is S.

  FIG. 9 is a table showing an example of uplink-downlink settings in the present embodiment. In FIG. 9, D indicates a downlink subframe, U indicates an uplink subframe, and S indicates a special subframe.

  In FIG. 9, subframe 1 in the radio frame is always a special subframe. In FIG. 9, subframes 0 and 5 are always reserved for downlink transmission, and subframe 1 is always reserved for uplink transmission.

  In FIG. 9, when the downlink-uplink switch point period is 5 ms, the subframe 6 in the radio frame is a special subframe, and when the downlink-uplink switch point period is 10 ms, the radio frame The inner subframe 6 is a downlink subframe.

  The first uplink reference UL-DL configuration is also referred to as a first parameter, a first configuration, or a serving cell uplink-downlink configuration. The first downlink reference UL-DL setting is also referred to as a second parameter or a second setting. The second uplink reference UL-DL setting is also referred to as a third parameter or a third setting. The second downlink reference UL-DL setting is also referred to as a fourth parameter or a fourth setting. The transmission direction UL-DL setting is also referred to as a fifth parameter or a fifth setting.

  Setting the uplink-downlink setting i as the first or second uplink reference UL-DL setting is referred to as setting the first or second uplink reference UL-DL setting i. Setting the uplink-downlink setting i as the first or second downlink reference UL-DL setting is referred to as setting the first or second downlink reference UL-DL setting i. Setting the uplink-downlink setting i as the transmission direction UL-DL setting is referred to as setting the transmission direction UL-DL setting i.

  Hereinafter, a setting method for the first uplink reference UL-DL setting, the first downlink reference UL-DL setting, and the transmission direction UL-DL setting will be described.

  The base station device 3 sets the first uplink reference UL-DL setting, the first downlink UL-DL setting, and the transmission direction UL-DL setting. The base station apparatus 3 includes first information (TDD-Config) indicating a first uplink reference UL-DL configuration, second information indicating a first downlink reference UL-DL configuration, and a transmission direction UL. -The third information indicating the DL setting is at least one of MIB, system information block type 1 message, system information message, RRC message, MAC CE (Control Element), and physical layer control information (for example, DCI format). You may send it in one. In addition, the base station apparatus 3 transmits the first information, the second information, and the third information to the MIB, the system information block type 1 message, the system information message, the RRC message, the MAC CE ( Control Element) and physical layer control information (for example, DCI format).

  For each of the plurality of serving cells, a first uplink reference UL-DL configuration, a second uplink reference UL-DL configuration, a first downlink reference UL-DL configuration, a second downlink reference UL- DL settings and transmission direction UL-DL settings may be defined.

  The base station apparatus 3 transmits the first information, the second information, and the third information for each serving cell to the mobile station apparatus 1 in which a plurality of serving cells are set. Note that the first information, the second information, and the third information may be defined for each serving cell.

  For the mobile station apparatus 1 in which two serving cells composed of one primary cell and one secondary cell are set, the base station apparatus 3 has first information for the primary cell, second information for the primary cell, You may transmit the 3rd information with respect to a primary cell, the 1st information with respect to a secondary cell, the 2nd information with respect to a secondary cell, and the 3rd information with respect to a secondary cell.

  Based on the first information, the second information, and the third information, the mobile station apparatus 1 in which a plurality of serving cells are set has the first uplink reference UL-DL configuration for each of the serving cells. The first downlink reference UL-DL setting and the transmission direction DL-UL setting may be set.

  The mobile station apparatus 1 in which two serving cells composed of one primary cell and one secondary cell are set includes the first uplink reference UL-DL setting for the primary cell, and the first downlink reference UL for the primary cell. -DL setting, transmission direction DL-UL setting for primary cell, first uplink reference UL-DL setting for secondary cell, first downlink reference UL-DL setting for secondary cell, transmission direction DL-UL for secondary cell Settings may be set.

  The first information for the primary cell is preferably included in the system information block type 1 message or the RRC message. The first information for the secondary cell is preferably included in the RRC message. The second information for the primary cell is preferably included in a system information block type 1 message, a system information message, or an RRC message. The second information for the secondary cell is preferably included in the RRC message. The third information is preferably included in MIB, MAC CE or physical layer control information (eg, DCI format).

  It is preferable that 1st information is common with respect to the some mobile station apparatus 1 in a cell. The second information may be common to the plurality of mobile station apparatuses 1 in the cell, or may be dedicated to the mobile station apparatus 1. The third information may be common to the plurality of mobile station apparatuses 1 in the cell, or may be dedicated to the mobile station apparatus 1.

  The second information may be transmitted together with the first information. The mobile station apparatus 1 that has not set the first downlink reference UL-DL configuration based on the second information may not receive the third information.

  The period for changing the transmission direction UL-DL setting is preferably shorter than the period for changing the downlink reference UL-DL setting. The frequency of changing the transmission direction UL-DL setting is preferably less than the frequency of changing the downlink reference UL-DL setting. The cycle for changing the downlink reference UL-DL configuration is preferably shorter than the cycle for changing the uplink reference UL-DL configuration. The frequency of changing the downlink reference UL-DL configuration is preferably less than the frequency of changing the uplink reference UL-DL configuration.

  The system information block type 1 message is initially transmitted via the PDSCH in the subframe 5 of the radio frame satisfying SFN mod 8 = 0, and is retransmitted in the subframe 5 of another radio frame satisfying SFN mod 2 = 0. (Repetition) is performed. The system information block type 1 message includes information indicating the configuration of special subframes (lengths of DwPTS, GP, and UpPTS). The system information block type 1 message is cell-specific information.

  The system information message is transmitted via the PDSCH. The system information message is cell-specific information. The system information message includes a system information block X other than the system information block type 1.

  The RRC message is transmitted via the PDSCH. The RRC message is information / signal processed in the RRC layer. The RRC message may be common to a plurality of mobile station apparatuses 1 in the cell, or may be dedicated to a specific mobile station apparatus 1.

  The MAC CE is transmitted via the PDSCH. The MAC CE is information / signal processed in the MAC layer.

  When the mobile station apparatus 1 receives the RRC message including the first information and / or the second information and / or the third information via the PDSCH, the mobile station apparatus 1 transmits a RRCConnectionReconfigurationComplete message corresponding to the RRC message. It is preferable to set (enable) the first uplink reference UL-DL setting and / or the first downlink reference UL-DL setting and / or the transmission direction UL-DL setting in the frame (timing).

  When the mobile station apparatus 1 receives the MIB including the first information and / or the second information and / or the third information in the subframe nk via the PBCH, the mobile station apparatus 1 receives the first information in the subframe n. It is preferable to set (enable) the uplink reference UL-DL setting / the first downlink reference UL-DL setting and / or the transmission direction UL-DL setting. For example, k is 4 or 8. For example, k is determined based on the table of FIG. 21 and the current first or second downlink reference UL-DL configuration. The description of FIG. 21 will be described later.

  When the mobile station apparatus 1 receives the MAC CE including the first information and / or the second information and / or the third information in the subframe nk via the PDSCH, the mobile station apparatus 1 receives the first information in the subframe n. Preferably, the uplink reference UL-DL configuration and / or the first downlink reference UL-DL configuration and / or the transmission direction UL-DL configuration are set (validated). For example, k is 4 or 8. For example, the subframe n + k is a subframe for transmitting HARQ-ACK (ACK) for the PDSCH used for transmission of the MAC CE. For example, k is determined based on the table of FIG. 21 and the current first or second downlink reference UL-DL configuration.

  The mobile station apparatus 1 transmits physical layer control information (for example, DCI format) including the first information and / or the second information and / or the third information in the subframe nk to the downlink physical channel ( For example, when received via PDCCH / EPDCCH), the first uplink reference UL-DL setting and / or the first downlink reference UL-DL setting and / or the transmission direction UL-DL setting are set in subframe n. It is preferable to set (enable). For example, k is 4 or 8. For example, the subframe n + k is a subframe for transmitting HARQ-ACK (ACK) for the downlink physical channel (for example, PDCCH / EPDCCH) used for transmission of the control information (for example, DCI format) of the physical layer. . For example, k is determined based on the table of FIG. 21 and the current first or second downlink reference UL-DL configuration.

  The mobile station apparatus 1 that has received the first information for a certain serving cell, has not received the second information for the certain serving cell, and the first information for the certain serving cell is transmitted, and the second information for the certain serving cell is transmitted. The base station apparatus 3 that has not transmitted the information may set the first downlink reference UL-DL configuration for the certain serving cell based on the first information for the certain serving cell. The mobile station apparatus 1 may ignore the 3rd information with respect to the serving cell which has set the 1st downlink reference UL-DL setting based on 1st information.

  FIG. 10 is a flowchart showing a setting method of the first uplink reference UL-DL setting and the first downlink reference UL-DL setting in the present embodiment. The mobile station apparatus 1 executes the setting method in FIG. 10 for each of the plurality of serving cells.

  The mobile station device 1 sets the first uplink reference UL-DL configuration for a certain serving cell based on the first information (S1000). The mobile station device 1 determines whether or not the second information for the certain serving cell is received (S1002). When receiving the second information for the certain serving cell, the mobile station apparatus 1 sets the first downlink reference UL-DL setting for the certain serving cell based on the second information for the certain serving cell. Is set (S1006). When the mobile station apparatus 1 has not received the second information for the certain serving cell (else / otherwise), the mobile station apparatus 1 uses the first downlink for the certain serving cell based on the first information for the certain serving cell. The reference UL-DL setting is set (S1004).

  A serving cell in which the first uplink reference UL-DL configuration and the first downlink reference UL-DL configuration are set based on the first information is also referred to as a serving cell in which dynamic TDD is not configured. A serving cell in which the first downlink reference UL-DL setting is set based on the second information is also referred to as a serving cell in which dynamic TDD is set.

  When the mobile station apparatus 1 resets the first downlink reference UL-DL setting for the serving cell in which the transmission direction UL-DL setting is set, the mobile station apparatus 1 clears the transmission direction UL-DL setting for the serving cell. / You may discard.

  In addition, the mobile station apparatus 1 is the 1st downlink reference UL-DL setting by which the 1st downlink reference UL-DL setting reset with respect to the serving cell to which the transmission direction UL-DL setting was set is the front. , It is not necessary to clear / discard the transmission direction UL-DL setting for the serving cell. That is, when the first downlink reference UL-DL setting for the serving cell for which the transmission direction UL-DL setting is set is changed, the mobile station device 1 clears the transmission direction UL-DL setting for the serving cell ( Clear / discard.

  When the base station apparatus 3 instructs the mobile station apparatus 1 to reconfigure / change the first downlink reference UL-DL configuration for the serving cell in which the transmission direction UL-DL configuration is set, the transmission direction for the serving cell It may be considered that the UL-DL setting is cleared / discarded by the mobile station apparatus 1.

  In addition, when the mobile station apparatus 1 resets the 1st downlink reference UL-DL setting with respect to the serving cell in which the 1st downlink reference UL-DL setting and the transmission direction UL-DL setting are set, it resets. The first downlink reference UL-DL setting and the transmission direction UL-DL setting may be cleared / discarded.

  The base station apparatus 3 reconfigures / changes the first uplink reference UL-DL setting for the serving cell in which the first downlink reference UL-DL setting and the transmission direction UL-DL setting are set. When instructed to the apparatus 1, the mobile station apparatus 1 may consider that the first downlink reference UL-DL setting and the transmission direction UL-DL setting for the serving cell are cleared / discarded by the mobile station apparatus 1. .

  The mobile station apparatus 1 receives the second information, determines a subframe in which an uplink signal can be transmitted based on the second information, and then monitors whether the third information is received. When the third information is received, a subframe capable of transmitting an uplink signal is determined based on the third information.

  For example, the base station apparatus 3 transmits the third information to the mobile station apparatus 1 using PDCCH / EPDCCH. The third information controls the operation of dynamic TDD within the coverage of the base station apparatus 3 (cell). The 3rd information is transmitted and received in CSS (Common Search Space) or USS (UE-specific Search Space).

  CSS is an area where a plurality of mobile station apparatuses 1 commonly monitor PDCCH / EPDCCH. The USS is an area defined based on at least C-RNTI. C-RNTI is an identifier uniquely assigned to the mobile station apparatus 1.

  C-RNTI may be used for transmission in the DCI format including the third information (information indicating the transmission direction for the subframe). An RNTI different from C-RNTI and SPS C-RNTI may be used for transmission in the DCI format including the third information (information indicating the transmission direction for the subframe). This RNTI is referred to as X-RNTI. That is, the CRC parity bit added to the DCI format including the information of the third information is scrambled with C-RNTI or X-RNTI.

  Moreover, the subframe which the mobile station apparatus 1 monitors PDCCH / EPDCCH containing 3rd information may be restrict | limited. The base station device 3 may control a subframe in which the mobile station device 1 monitors the PDCCH / EPDCCH including the third information. The base station device 3 may transmit to the mobile station device 1 information indicating a subframe in which the mobile station device 1 monitors the PDCCH / EPDCCH including the third information.

  For example, PDCCH / EPDCCH including the third information can be arranged at intervals of 10 subframes. For example, the mobile station apparatus 1 monitors the third information at 10 subframe intervals. The subframe in which the PDCCH / EPDCCH including the third information can be arranged may be determined in advance. For example, the third information may be arranged only in subframes 0 and 5 of the radio frame.

  The base station apparatus 3 transmits the third information only when it is determined to be necessary. For example, the base station apparatus 3 transmits the third information when determining to change the transmission direction UL-DL setting. For example, the base station apparatus 3 transmits the third information when it is determined that the third information needs to be notified to the mobile station apparatus 1 that has started the dynamic TDD operation.

  The mobile station apparatus 1 that has started the dynamic TDD operation monitors the PDCCH / EPDCCH including the third information in a subframe in which the PDCCH / EPDCCH including the third information can be arranged.

  The mobile station apparatus 1 may monitor the third information only when it is set to monitor the third information. For example, the mobile station apparatus 1 may monitor the third information only when the first downlink reference setting is set.

  The mobile station apparatus 1 tries to decode the received signal, and determines whether or not a PDCCH / EPDCCH including the third information is detected. When the mobile station apparatus 1 detects the PDCCH / EPDCCH including the third information, the mobile station apparatus 1 determines a subframe in which an uplink signal can be transmitted based on the detected third information. When the mobile station apparatus 1 does not detect the PDCCH / EPDCCH including the third information, the mobile station apparatus 1 may maintain the determination so far regarding a subframe in which an uplink signal can be transmitted.

  Hereinafter, a setting method of the second uplink reference UL-DL setting will be described.

  When a plurality of serving cells are set for the mobile station apparatus 1 and the first uplink reference UL-DL settings for at least two serving cells are different, the mobile station apparatus 1 and the base station apparatus 3 Set link reference UL-DL settings.

  A plurality of serving cells are set for the mobile station apparatus 1, and the mobile station apparatus 1 and the base station apparatus 3 are the second except for the case where the first uplink reference UL-DL settings for at least two serving cells are different. The uplink reference UL-DL setting may not be set.

  Except when the first uplink reference UL-DL configuration for at least two serving cells is different, the first uplink reference UL-DL configuration for all serving cells is the same. When one serving cell is set for the mobile station apparatus 1, the mobile station apparatus 1 and the base station apparatus 3 do not need to set the second uplink reference UL-DL setting.

  FIG. 11 is a flowchart showing a setting method of the second uplink reference UL-DL setting in the present embodiment. In FIG. 11, one primary cell and one secondary cell are set for the mobile station apparatus 1. The mobile station apparatus 1 executes the setting method in FIG. 11 for each of the primary cell and the secondary cell.

  The mobile station apparatus 1 determines whether the 1st uplink reference UL-DL setting with respect to a primary cell differs from the 1st uplink reference UL-DL setting with respect to a secondary cell (S1100). When the first uplink reference UL-DL setting for the primary cell and the first uplink reference UL-DL setting for the secondary cell are the same, the mobile station apparatus 1 sets the second uplink reference UL-DL setting. Without setting, the setting process of the second uplink reference UL-DL setting is terminated.

  When the first uplink reference UL-DL setting for the primary cell and the first uplink reference UL-DL setting for the secondary cell are different, the mobile station device 1 is the primary cell or the secondary cell. And / or in another serving cell, it is determined whether the PDCCH / EPDCCH with a CIF (Carrier Indicator Field) corresponding to the serving cell is set to be monitored (S1102).

  When the serving cell is a secondary cell and the mobile station apparatus 1 is configured to monitor the PDCCH / EPDCCH with CIF corresponding to the serving cell (secondary cell) in another serving cell (primary cell), the other serving cell Based on the first uplink reference UL-DL configuration for the (primary cell) and the pair formed by the first uplink reference UL-DL configuration for the serving cell (secondary cell), the first for the serving cell (secondary cell) 2 uplink reference UL-DL settings are set (S1104).

  In S1104, the mobile station apparatus 1 sets the 2nd uplink reference UL-DL setting with respect to a serving cell (secondary cell) based on the table | surface of FIG. FIG. 12 shows a pair formed by the first uplink reference UL-DL configuration for another serving cell (primary cell) and the first uplink reference UL-DL configuration for the serving cell (secondary cell) in the present embodiment. FIG. 4 is a diagram illustrating a correspondence of a second uplink reference UL-DL configuration to a secondary cell.

  In FIG. 12, the primary cell UL-DL configuration refers to the first uplink reference UL-DL configuration for another serving cell (primary cell). In FIG. 12, the secondary cell UL-DL configuration refers to the first uplink reference UL-DL configuration for the serving cell (secondary cell).

  For example, the first uplink reference UL-DL setting 0 is set for another serving cell (primary cell), and the first uplink reference UL-DL setting 2 is set for the serving cell (secondary cell). If there is, the second uplink reference UL-DL setting 1 is set for the secondary cell.

  The serving cell is a primary cell, or the serving cell is a secondary cell, and the mobile station apparatus 1 is set to monitor the PDCCH / EPDCCH with the CIF corresponding to the serving cell (secondary cell) in another serving cell (primary cell) If not, the first uplink reference UL-DL configuration for the serving cell is set to the second uplink reference UL-DL configuration for the serving cell (S1106).

  The base station apparatus 3 sets the second uplink reference UL-DL setting based on the setting method of FIG.

  Monitoring PDCCH / EPDCCH with CIF means trying to decode PDCCH or EPDCCH according to the DCI format including CIF. CIF is a field to which a carrier indicator is mapped. The value of the carrier indicator indicates the serving cell corresponding to the DCI format to which the carrier indicator relates.

  In another serving cell, the mobile station apparatus 1 configured to monitor the PDCCH / EPDCCH with CIF corresponding to the serving cell monitors the PDCCH / EPDCCH with CIF in the other serving cell.

  In the other serving cell, the mobile station apparatus 1 configured to monitor the PDCCH / EPDCCH with the CIF corresponding to the serving cell receives the third information for the serving cell in the other serving cell via the PDCCH / EPDCCH. It is preferable to receive.

  In another serving cell, the mobile station apparatus 1 that is not set to monitor the PDCCH / EPDCCH with the CIF corresponding to the serving cell monitors the PDCCH / EPDCCH with the CIF or without the CIF in the serving cell.

  In another serving cell, the mobile station apparatus 1 that is not set to monitor the PDCCH / EPDCCH with the CIF corresponding to the serving cell receives third information for the serving cell via the PDCCH / EPDCCH in the serving cell. It is preferable.

  PDCCH / EPDCCH for the primary cell is transmitted in the primary cell. It is preferable that the 3rd information with respect to a primary cell is transmitted via PDCCH / EPDCCH of a primary cell.

  The base station apparatus 3 transmits to the mobile station apparatus 1 a parameter (cif-Presence-r10) indicating whether CIF is included in the DCI format transmitted in the primary cell.

  The base station apparatus 3 transmits a parameter (CrossCarrierSchedulingConfig-r10) related to cross carrier scheduling to the mobile station apparatus 1 for each of the secondary cells.

  The parameter (CrossCarrierSchedulingConfig-r10) includes a parameter (schedulingCellInfo-r10) indicating whether the PDCCH / EPDCCH corresponding to the related secondary cell is transmitted in the secondary cell or another serving cell.

  When the parameter (schedulingCellInfo-r10) indicates that the PDCCH / EPDCCH corresponding to the related secondary cell is transmitted in the secondary cell, the parameter (schedulingCellInfo-r10) is the DCI format transmitted in the secondary cell. Includes a parameter (cif-Presence-r10) indicating whether or not CIF is included.

  When the parameter (schedulingCellInfo-r10) indicates that the PDCCH / EPDCCH corresponding to the associated secondary cell is transmitted in another serving cell, the parameter (schedulingCellInfo-r10) is assigned to the downlink link to the associated secondary cell. Includes a parameter (schedulingCellId) indicating which serving cell is transmitted.

  Hereinafter, a setting method of the second downlink reference UL-DL setting will be described.

  When a plurality of serving cells are set for the mobile station apparatus 1 and the first downlink reference UL-DL settings for at least two serving cells are different, the mobile station apparatus 1 and the base station apparatus 3 Set link reference UL-DL settings. A plurality of serving cells are set for the mobile station apparatus 1, and the mobile station apparatus 1 and the base station apparatus 3 are the second except for the case where the first downlink reference UL-DL settings for at least two serving cells are different. The downlink reference UL-DL setting may not be set.

  Unless the first downlink reference UL-DL configuration for at least two serving cells is different, the first downlink reference UL-DL configuration for all serving cells is the same. When one serving cell is set for the mobile station apparatus 1, the mobile station apparatus 1 and the base station apparatus 3 do not have to set the second downlink reference UL-DL setting.

  FIG. 13 is a flowchart showing a setting method of the second downlink reference UL-DL setting in the present embodiment. In FIG. 13, one primary cell and one secondary cell are set for the mobile station apparatus 1. The mobile station apparatus 1 executes the setting method in FIG. 13 for each of the primary cell and the secondary cell.

  The mobile station device 1 determines whether or not the first downlink reference UL-DL setting for the primary cell and the first downlink reference UL-DL setting for the secondary cell are different (S1300). When the first downlink reference UL-DL setting for the primary cell and the first downlink reference UL-DL setting for the secondary cell are the same, the mobile station apparatus 1 sets the second downlink reference UL-DL setting. Without setting, the setting process of the second downlink reference UL-DL setting is terminated.

  When the first downlink reference UL-DL setting for the primary cell and the first downlink reference UL-DL setting for the secondary cell are different, the mobile station device 1 is the primary cell or the secondary cell. Is determined (S1302).

  When the serving cell is a secondary cell, it is formed by the first downlink reference UL-DL setting for another serving cell (primary cell) and the first downlink reference UL-DL setting for the serving cell (secondary cell). Based on the pair, the second uplink reference UL-DL configuration for the serving cell (secondary cell) is set (S1304).

  In S1304, the mobile station apparatus 1 sets the 2nd downlink reference UL-DL setting with respect to a serving cell (secondary cell) based on the table | surface of FIG. FIG. 14 shows a pair formed by the first downlink reference UL-DL configuration for the primary cell and the first downlink reference UL-DL configuration for the secondary cell, and the second for the secondary cell in this embodiment. It is a figure which shows a response | compatibility of downlink reference UL-DL setting of.

  In FIG. 14, the primary cell UL-DL configuration refers to the first downlink reference UL-DL configuration for the primary cell. In FIG. 14, the secondary cell UL-DL configuration refers to the first downlink reference UL-DL configuration for the secondary cell.

  When the pair formed by the first downlink reference UL-DL configuration for the primary cell and the first downlink reference UL-DL configuration for the secondary cell belongs to the set 1 of FIG. Two downlink reference UL-DL configurations are defined in Set 1.

  In the primary cell, the mobile station apparatus 1 is not set to monitor the PDCCH / EPDCCH with the CIF corresponding to the secondary cell, the first downlink reference UL-DL setting for the primary cell, and the secondary cell When the pair formed by the first downlink reference UL-DL configuration belongs to the set 2 in FIG. 14, the second downlink reference UL-DL configuration for the secondary cell is defined in the set 2.

  In the primary cell, the mobile station apparatus 1 is not set to monitor the PDCCH / EPDCCH with the CIF corresponding to the secondary cell, the first downlink reference UL-DL setting for the primary cell, and the secondary cell When the pair formed by the first downlink reference UL-DL configuration belongs to the set 3 in FIG. 14, the second downlink reference UL-DL configuration for the secondary cell is defined in the set 3.

  In the primary cell, the mobile station apparatus 1 is set to monitor the PDCCH / EPDCCH with the CIF corresponding to the secondary cell, the first downlink reference UL-DL setting for the primary cell, and the first for the secondary cell When a pair formed by one downlink reference UL-DL configuration belongs to the set 4 in FIG. 14, the second downlink reference UL-DL configuration for the secondary cell is defined in the set 4.

  In the primary cell, the mobile station apparatus 1 is set to monitor the PDCCH / EPDCCH with the CIF corresponding to the secondary cell, the first downlink reference UL-DL setting for the primary cell, and the first for the secondary cell When a pair formed by one downlink reference UL-DL configuration belongs to the set 5 in FIG. 14, the second downlink reference UL-DL configuration for the secondary cell is defined in the set 5.

  For example, when the first downlink reference UL-DL setting 1 is set for the primary cell and the first downlink reference UL-DL setting 0 is set for the secondary cell, the secondary cell To set the second downlink reference UL-DL setting 1.

  When the serving cell is a primary cell, the first downlink reference UL-DL setting for the serving cell (primary cell) is set to the second downlink reference UL-DL setting for the serving cell (primary cell) (S1306).

  The base station apparatus 3 also sets the second downlink reference UL-DL setting based on the setting method of FIG.

  Hereinafter, the first uplink reference UL-DL configuration will be described.

  The first uplink reference UL-DL configuration is used at least to identify a subframe in which the uplink transmission is possible or impossible in the serving cell.

  The mobile station apparatus 1 does not perform uplink transmission in a subframe instructed as a downlink subframe by the first uplink reference UL-DL setting. The mobile station apparatus 1 does not perform uplink transmission in DwPTS and GP of the subframe instructed as a special subframe by the first uplink reference UL-DL setting.

  Hereinafter, the first downlink reference UL-DL configuration will be described.

  The first downlink reference UL-DL configuration is used at least for identifying a subframe in which a downlink transmission is possible or impossible in the serving cell.

  The mobile station apparatus 1 does not perform downlink transmission in the subframe indicated as the uplink subframe by the first downlink reference UL-DL setting. The mobile station apparatus 1 does not perform downlink transmission in the UpPTS and GP of the subframe instructed as the special subframe by the first downlink reference UL-DL setting.

  The mobile station apparatus 1 that has set the first downlink reference UL-DL setting based on the first information performs the first uplink reference UL-DL setting or the first downlink reference UL-DL setting. Measurement using a downlink signal (for example, measurement regarding channel state information) may be performed in DwPTS of the instructed downlink subframe or special subframe.

  Therefore, in dynamic TDD, the base station apparatus 3 uses the subframe indicated as the downlink subframe by the first uplink reference UL-DL setting as the special subframe or the uplink subframe, or the first If the subframe indicated as the special subframe by the uplink reference UL-DL setting of the uplink is used as the uplink subframe, the movement in which the first downlink reference UL-DL setting is set based on the first information There is a problem that the station apparatus 1 cannot appropriately perform measurement using a downlink signal.

  Therefore, the base station apparatus 3 determines a downlink reference UL-DL setting from the setting set (set setting) limited based on the first uplink reference UL-DL setting. That is, the first downlink reference UL-DL configuration is an element in a configuration set that is limited based on the first uplink reference UL-DL configuration. The configuration set limited based on the first uplink reference UL-DL configuration includes an uplink-downlink configuration that satisfies the following conditions (a) to (c). FIG. 15 is a diagram illustrating a relationship between a subframe indicated by the first uplink reference UL-DL setting and a subframe indicated by the first downlink reference UL-DL setting in the present embodiment. In FIG. 15, D indicates a downlink subframe, U indicates an uplink subframe, and S indicates a special subframe.

Condition (a): A subframe indicated as a downlink subframe by the first uplink reference UL-DL configuration is indicated as a downlink subframe. Condition (b): First uplink reference UL. -The subframe indicated as the uplink subframe by the DL setting is indicated as the uplink subframe or the downlink subframe. Condition (c): As the special subframe by the first uplink reference UL-DL setting. The indicated subframe is indicated as a downlink subframe or a special subframe.

  Thereby, in dynamic TDD, the DwPTS of the subframe instructed as the downlink subframe by the first uplink reference UL-DL setting and the special subframe are not used for uplink transmission. Therefore, the mobile station apparatus 1 that has set the first downlink reference UL-DL setting based on the first information can appropriately perform the measurement using the downlink signal.

  Note that the mobile station apparatus 1 that has set the first downlink reference UL-DL setting based on the second information also uses the downlink subframe or special indicated by the first uplink reference UL-DL setting. You may perform the measurement (for example, measurement regarding channel state information) using the downlink signal in DwPTS of a subframe.

  The subframe indicated by the first uplink reference UL-DL setting as an uplink subframe and indicated by the first downlink reference UL-DL setting as the downlink subframe is also referred to as a first flexible subframe. . The first flexible subframe is a subframe reserved for uplink and downlink transmission.

  The subframe indicated as a special subframe by the first uplink reference UL-DL setting and indicated as the downlink subframe by the first downlink reference UL-DL setting is also referred to as a second flexible subframe. The second flexible subframe is a subframe reserved for downlink transmission. The second flexible subframe is a subframe reserved for downlink transmission in DwPTS and uplink transmission in UpPTS.

  Hereinafter, the transmission direction UL-DL setting will be described in detail.

  The direction of transmission (uplink / downlink) based on the first uplink reference UL-DL configuration, the first downlink reference UL-DL configuration, and scheduling information (DCI format and / or HARQ-ACK) by the mobile station apparatus 1 The base station apparatus 3 erroneously receives / decodes scheduling information (DCI format and / or HARQ-ACK) in a subframe in which a downlink signal is transmitted to another mobile station apparatus 1. There is a problem in that the mobile station apparatus 1 that has been transmitted transmits an uplink signal, and the uplink signal causes interference with the downlink signal.

  Therefore, the mobile station apparatus 1 and the base station apparatus 3 of the present invention set the transmission direction UL-DL setting related to the transmission direction (uplink / downlink) in the subframe. The transmission direction UL-DL setting is used to determine the transmission direction in the subframe.

  The mobile station apparatus 1 controls transmission in the first flexible subframe and the second flexible subframe based on the scheduling information (DCI format and / or HARQ-ACK) and the transmission direction UL-DL setting.

  The base station device 3 transmits third information indicating the transmission direction UL-DL setting to the mobile station device 1. The third information is information indicating a subframe in which uplink transmission is possible. The third information is information indicating a subframe in which downlink transmission is possible. The third information is information indicating a subframe in which uplink transmission in UpPTS and downlink transmission in DwPTS are possible.

  For example, the transmission direction UL-DL setting is indicated as an uplink subframe by the first uplink reference UL-DL setting, and the subframe indicated by the first downlink reference UL-DL setting as the downlink subframe. And / or the direction of transmission in a subframe indicated as a special subframe by the first uplink reference UL-DL setting and indicated as a downlink subframe by the first downlink reference UL-DL setting. Used to identify. That is, the transmission direction UL-DL setting specifies the transmission direction in subframes indicated as different subframes in the first uplink reference UL-DL setting and the first downlink reference UL-DL setting. Used to do.

  FIG. 16 shows the subframe indicated by the first uplink reference UL-DL setting, the subframe indicated by the first downlink reference UL-DL setting, and the transmission direction UL-DL setting in the present embodiment. It is a figure which shows the relationship of the sub-frame performed. In FIG. 16, D indicates a downlink subframe, U indicates an uplink subframe, and S indicates a special subframe.

  The base station apparatus 3 sets the transmission direction UL-DL setting from a setting set (set setting) limited based on the first uplink reference UL-DL setting and the first downlink reference UL-DL setting. decide. That is, the transmission direction UL-DL configuration is an element in a configuration set that is limited based on the first uplink reference UL-DL configuration and the first downlink reference UL-DL configuration. The configuration set limited based on the first uplink reference UL-DL configuration and the first downlink reference UL-DL configuration has an uplink-downlink configuration that satisfies the following conditions (d) to (h). Including.

Condition (d): The subframe indicated as the downlink subframe by the first uplink reference UL-DL setting and the first downlink reference UL-DL setting is indicated as the downlink subframe. (E): A subframe indicated as an uplink subframe by the first uplink reference UL-DL setting and the first downlink reference UL-DL setting is indicated as an uplink subframe. Condition (f ): The subframe indicated as the uplink subframe by the first uplink reference UL-DL setting is designated as the uplink subframe by the first downlink reference UL-DL setting. Or, it is indicated as a downlink subframe. Condition (g): first uplink link A subframe indicated as a special subframe is indicated as a special subframe by the reference UL-DL setting and the first downlink reference UL-DL setting. Condition (h): first uplink reference UL-DL Although indicated as a special subframe by setting, the subframe indicated as the downlink subframe by the first downlink reference UL-DL setting is indicated as a special subframe or a downlink subframe.

  The base station apparatus 3 may perform downlink transmission scheduling in a subframe indicated as a downlink subframe by the transmission direction UL-DL setting.

  The mobile station apparatus 1 may perform downlink signal reception processing in a subframe indicated as a downlink subframe by the transmission direction UL-DL setting. The mobile station apparatus 1 may monitor PDCCH / EPDCCH in a subframe instructed as a downlink subframe by the transmission direction UL-DL setting. The mobile station apparatus 1 may perform the PDSCH reception process in the subframe indicated as the downlink subframe by the transmission direction UL-DL setting based on the detection of the downlink grant via the PDCCH / EPDCCH.

  When the transmission of the uplink signal (PUSCH / SRS) in the subframe instructed as the downlink subframe by the transmission direction UL-DL setting is scheduled or set, the mobile station apparatus 1 uses the uplink signal in the subframe. (PUSCH / SRS) transmission processing is not performed.

  The base station apparatus 3 may perform uplink transmission scheduling in the subframe indicated as the uplink subframe by the transmission direction UL-DL setting.

  The base station apparatus 3 may perform downlink transmission scheduling in the subframe indicated as the uplink subframe by the transmission direction UL-DL setting. In the subframe indicated as the uplink subframe by the transmission direction UL-DL setting, scheduling of downlink transmission by the base station apparatus 3 may be prohibited.

  The mobile station apparatus 1 may perform uplink signal transmission processing in a subframe instructed as an uplink subframe by the transmission direction UL-DL setting. When the transmission of the uplink signal (PUSCH / DMRS / SRS) in the subframe indicated as the uplink subframe by the transmission direction UL-DL setting is scheduled or set, the mobile station apparatus 1 You may perform the transmission process of a link signal (PUSCH / DMRS / SRS).

  The mobile station apparatus 1 may perform downlink signal reception processing in a subframe that is instructed as an uplink subframe by the transmission direction UL-DL setting and that is not scheduled for uplink transmission. In the subframe instructed as the uplink subframe by the transmission direction UL-DL setting, the mobile station apparatus 1 may prohibit the reception process of the downlink signal.

  The base station apparatus 3 may perform downlink transmission scheduling in the DwPTS of the subframe indicated as the special subframe by the transmission direction UL-DL setting.

  The mobile station apparatus 1 may perform downlink signal reception processing in DwPTS of a subframe instructed as a special subframe by the transmission direction UL-DL setting. The mobile station apparatus 1 may monitor PDCCH / EPDCCH in DwPTS of a subframe indicated as a special subframe by the transmission direction UL-DL setting. The mobile station apparatus 1 may perform the PDSCH reception process in the DwPTS of the subframe indicated as the special subframe by the transmission direction UL-DL setting based on the detection of the downlink grant via the PDCCH / EPDCCH.

  When the transmission of the PUSCH in the subframe instructed as the special subframe by the transmission direction UL-DL setting is scheduled or set, the mobile station apparatus 1 does not perform the PUSCH transmission process in the subframe.

  When the SRS transmission in the UpPTS of the subframe instructed as the special subframe by the transmission direction UL-DL setting is scheduled or set, the mobile station apparatus 1 performs the SRS transmission process in the UpPTS of the subframe. May be.

  FIG. 17 is a diagram illustrating a relationship among the first uplink reference UL-DL setting, the first downlink reference UL-DL setting, and the transmission direction UL-DL setting in the present embodiment.

  For example, in FIG. 17, when the first uplink reference UL-DL configuration is 0, the first downlink reference UL-DL configuration is the set {0, 1, 2, 3, 4, 5, 6}. One of them. For example, in FIG. 17, when the first uplink reference UL-DL setting is 1, the first downlink reference UL-DL setting is one of the sets {1, 2, 4, 5}. .

  For example, in FIG. 17, when the first uplink reference UL-DL setting is 0 and the first downlink reference UL-DL setting is 1, the transmission direction UL-DL setting is set {0, 1, 6}.

  Note that the value of the first downlink reference UL-DL setting may be the same as the value of the first uplink reference UL-DL setting. However, since the mobile station apparatus 1 that has not received the second information sets the same value as the value of the first uplink reference UL-DL setting as the first downlink reference UL-DL setting, The value of the first downlink reference UL-DL setting indicated by the information is preferably not the same as the value of the first uplink reference UL-DL setting indicated by the first information.

  When the value of the first uplink reference UL-DL setting and the value of the first downlink reference UL-DL setting are the same, the transmission direction UL-DL setting may not be defined. Alternatively, when the value of the first uplink reference UL-DL configuration and the value of the first downlink reference UL-DL configuration are the same, the value of the first uplink reference UL-DL configuration and the first downlink The same value as the value of the reference UL-DL setting may be set in the transmission direction UL-DL setting.

  In addition, as a setting set limited based on the first uplink reference UL-DL setting and the first downlink reference UL-DL setting, the uplink-downlink setting of the first uplink reference UL-DL setting and You may use the setting set (setting of a set) comprised from the uplink-downlink setting of a 1st downlink reference UL-DL setting.

  For example, when the first uplink reference UL-DL configuration is 0 and the first downlink reference UL-DL configuration is 1, the first uplink reference UL-DL configuration and the first downlink reference The setting set limited based on the UL-DL setting is {0, 1}. In this case, the third information is preferably 1 bit.

  3rd information is information which shows transmission direction UL-DL setting from the setting set (setting of a set) comprised from a 1st uplink reference UL-DL setting and a 1st downlink reference UL-DL setting. But you can.

  Hereinafter, the first uplink reference UL-DL configuration and the second uplink reference UL-DL configuration will be described in detail.

  In the first uplink reference UL-DL configuration and the second uplink reference UL-DL configuration, a subframe n in which PDCCH / EPDCCH / PHICH is arranged and a PUSCH corresponding to the PDCCH / EPDCCH / PHICH are arranged. Used to specify (select, determine) the correspondence with subframe n + k.

  When one primary cell is set, or one primary cell and one secondary cell are set, the first uplink reference UL-DL setting for the primary cell and the first uplink reference UL for the secondary cell -When the DL configuration is the same, in each of the two serving cells, the corresponding first uplink reference UL-DL configuration corresponds to the subframe in which the PDCCH / EPDCCH / PHICH is arranged and the PDCCH / EPDCCH / PHICH This is used to determine the correspondence with the subframe in which the PUSCH is arranged.

  When one primary cell and one secondary cell are configured, and the first uplink reference UL-DL configuration for the primary cell and the first uplink reference UL-DL configuration for the secondary cell are different, each of the two serving cells The corresponding second uplink reference UL-DL configuration determines the correspondence between the subframe in which the PDCCH / EPDCCH / PHICH is arranged and the subframe in which the PUSCH to which the PDCCH / EPDCCH / PHICH is arranged Used for.

  FIG. 18 is a diagram illustrating a correspondence between a subframe n in which PDCCH / EPDCCH / PHICH is arranged and a subframe n + k in which PUSCH corresponding to the PDCCH / EPDCCH / PHICH is arranged in the present embodiment. The mobile station apparatus 1 specifies (selects and determines) the value of k according to the table of FIG.

  In FIG. 18, when one primary cell is configured, or one primary cell and one secondary cell are configured, the first uplink reference UL-DL configuration for the primary cell and the first for the secondary cell. When the uplink reference UL-DL configuration is the same, the uplink-downlink configuration refers to the first uplink reference UL-DL configuration.

  In FIG. 18, when one primary cell and one secondary cell are configured, and the first uplink reference UL-DL configuration for the primary cell and the first uplink reference UL-DL configuration for the secondary cell are different, The link-downlink configuration refers to the second uplink reference UL-DL configuration.

  Hereinafter, in the description of FIG. 18, the first uplink reference UL-DL configuration and the second uplink reference UL-DL configuration are simply referred to as uplink-downlink configuration.

  The mobile station apparatus 1 detects PDCCH / EPDCCH with an uplink grant for the mobile station apparatus 1 corresponding to the serving cell in which the uplink-downlink settings 1 to 6 are set in the subframe n. In this case, PUSCH transmission corresponding to the uplink grant is performed in the subframe n + k specified (selected and determined) based on the table of FIG.

  The mobile station apparatus 1 corresponds to the serving cell in which the uplink-downlink settings 1 to 6 are set in the subframe n, and when the mobile station apparatus 1 detects PHICH with NACK for the mobile station apparatus 1, FIG. The PUSCH transmission is performed in the subframe n + k specified (selected and determined) based on the 18 tables.

  The uplink grant for the mobile station apparatus 1 corresponding to the serving cell in which the uplink-downlink setting 0 is set includes a 2-bit uplink index (UL index). The uplink grant corresponding to the serving cell in which the uplink-downlink settings 1 to 6 are set, and the uplink grant for the mobile station apparatus 1 does not include an uplink index (UL index).

  In the mobile station apparatus 1, the MSB (Most Significant Bit) of the uplink index included in the uplink grant corresponding to the serving cell in which the uplink-downlink setting 0 is set is set to 1 in the subframe n. In this case, PUSCH transmission corresponding to the uplink grant is adjusted in subframe n + k specified (selected and determined) based on the table of FIG.

  When the mobile station apparatus 1 receives PHICH with NACK corresponding to a serving cell in which uplink-downlink setting 0 is set in the first resource set in subframe n = 0 or 5, FIG. The PUSCH transmission corresponding to the PHICH is adjusted in the subframe n + k specified (selected, determined) based on the table of FIG.

  In the mobile station apparatus 1, the LSB (Least Significant Bit) of the uplink index included in the uplink grant corresponding to the serving cell in which the uplink-downlink setting 0 is set is set to 1 in the subframe n. In this case, PUSCH transmission corresponding to the uplink grant is adjusted in subframe n + 7.

  When the mobile station apparatus 1 receives a PHICH with a NACK corresponding to the serving cell in which the uplink-downlink setting 0 is set in the second resource set in the subframe n = 0 or 5, the mobile station apparatus 1 Adjust the PUSCH transmission according to the uplink grant at n + 7.

  When the mobile station apparatus 1 receives a PHICH with a NACK corresponding to a serving cell in which the uplink-downlink setting 0 is set in the subframe n = 1 or 6, the uplink grant in the subframe n + 7 It adjusts PUSCH transmission according to.

  For example, when the mobile station apparatus 1 detects PDCCH / EPDCCH / PHICH corresponding to a serving cell in which uplink-downlink setting 0 is set in [SFN = m, subframe 1], In the subframe [SFN = m, subframe 7], the transmission of PUSCH is adjusted.

  The first uplink reference UL-DL setting and the second uplink reference UL-DL setting correspond to the correspondence between the subframe n in which PHICH is arranged and the subframe nk in which PUSCH corresponding to the PHICH is arranged. Is used to specify (select, determine).

  When one primary cell is set, or one primary cell and one secondary cell are set, the first uplink reference UL-DL setting for the primary cell and the first uplink reference UL for the secondary cell When the DL configuration is the same, in each of the two serving cells, the corresponding first uplink reference UL-DL configuration is the subframe n in which the PHICH is arranged and the subframe in which the PUSCH to which the PHICH is arranged Used to specify (select, determine) the correspondence with n−k.

  When one primary cell and one secondary cell are configured, and the first uplink reference UL-DL configuration for the primary cell and the first uplink reference UL-DL configuration for the secondary cell are different, each of the two serving cells , The corresponding second uplink reference UL-DL configuration specifies (selects and determines) the correspondence between the subframe n in which the PHICH is arranged and the subframe nk in which the PUSCH to which the PHICH is arranged is arranged Used to do.

  FIG. 19 is a diagram illustrating a correspondence between the subframe n in which the PHICH is arranged and the subframe nk in which the PUSCH corresponding to the PHICH is arranged in the present embodiment. The mobile station apparatus 1 specifies (selects and determines) the value of k according to the table of FIG.

  In FIG. 19, when one primary cell is configured, or one primary cell and one secondary cell are configured, the first uplink reference UL-DL configuration for the primary cell and the first for the secondary cell When the uplink reference UL-DL configuration is the same, the uplink-downlink configuration refers to the first uplink reference UL-DL configuration.

  In FIG. 19, when one primary cell and one secondary cell are configured, and the first uplink reference UL-DL configuration for the primary cell and the first uplink reference UL-DL configuration for the secondary cell are different, The link-downlink configuration refers to the second uplink reference UL-DL configuration.

  Hereinafter, in the description of FIG. 19, the first uplink reference UL-DL configuration and the second uplink reference UL-DL configuration are simply referred to as uplink-downlink configuration.

  For the serving cell in which uplink-downlink configurations 1 to 6 are set, the HARQ indicator (HARQ-ACK) received via the PHICH corresponding to the serving cell in subframe n is shown in the table of FIG. Related to transmission of PUSCH in subframe nk identified based on it.

  For the serving cell in which uplink-downlink configuration 0 is set, the first resource set in subframe n = 0 or 5 or the PHICH corresponding to the serving cell in subframe n = 1 or 6 The received HARQ indicator (HARQ-ACK) relates to the transmission of PUSCH in subframes nk identified based on the table of FIG.

  For the serving cell in which uplink-downlink configuration 0 is set, in the second resource set in subframe n = 0 or 5, the HARQ indicator (HARQ-ACK) received via the PHICH corresponding to the serving cell ) Relates to transmission of PUSCH in subframe n-6.

  For example, for the serving cell in which uplink-downlink configuration 1 is set, the HARQ indicator (HARQ-ACK) received via PHICH in [SFN = m, subframe 1] It relates to PUSCH transmission in frame [SFN = m−1, subframe 7].

  The first uplink reference UL-DL setting and the second uplink reference UL-DL setting specify the correspondence between the subframe n in which the PUSCH is arranged and the subframe n + k in which the PHICH corresponding to the PUSCH is arranged. Used for (selection, determination).

  When one primary cell is set, or one primary cell and one secondary cell are set, the first uplink reference UL-DL setting for the primary cell and the first uplink reference UL for the secondary cell When the DL configuration is the same, in each of the two serving cells, the corresponding first uplink reference UL-DL configuration is the subframe n in which the PUSCH is allocated and the subframe in which the PHICH corresponding to the PUSCH is allocated Used to specify (select, determine) the correspondence with n + k.

  When one primary cell and one secondary cell are configured, and the first uplink reference UL-DL configuration for the primary cell and the first uplink reference UL-DL configuration for the secondary cell are different, each of the two serving cells , The corresponding second uplink reference UL-DL configuration specifies (selects and determines) the correspondence between the subframe n in which the PUSCH is arranged and the subframe n + k in which the PHICH is arranged in the PUSCH Used for.

  FIG. 20 is a diagram illustrating a correspondence between the subframe n in which the PUSCH is arranged in this embodiment and the subframe n + k in which the PHICH corresponding to the PUSCH is arranged. The mobile station apparatus 1 specifies (selects and determines) the value of k according to the table of FIG.

  In FIG. 20, when one primary cell is configured, or one primary cell and one secondary cell are configured, the first uplink reference UL-DL configuration for the primary cell and the first for the secondary cell. When the uplink reference UL-DL configuration is the same, the uplink-downlink configuration refers to the first uplink reference UL-DL configuration.

  In FIG. 20, when one primary cell and one secondary cell are configured, and the first uplink reference UL-DL configuration for the primary cell and the first uplink reference UL-DL configuration for the secondary cell are different, The link-downlink configuration refers to the second uplink reference UL-DL configuration.

  Hereinafter, in the description of FIG. 20, the first uplink reference UL-DL configuration and the second uplink reference UL-DL configuration are simply referred to as uplink-downlink configuration.

  When PUSCH transmission is scheduled in subframe n, mobile station apparatus 1 determines PHICH resources in subframe n + k specified from the table of FIG.

  For example, when PUSCH transmission is scheduled in [SFN = m, subframe n = 2] for a serving cell in which uplink-downlink setting 0 is set, [SFN = m, subframe n = 6], PHICH resources are determined.

  For example, when PUSCH transmission is scheduled in [SFN = m, subframe n = 3] for a serving cell in which uplink-downlink setting 0 is set, [SFN = m + 1, subframe n = 0] is determined from the first resource set in [0].

  For example, when PUSCH transmission is scheduled in [SFN = m, subframe n = 4] for a serving cell in which uplink-downlink setting 0 is set, [SFN = m + 1, subframe n = 0] from the second resource set.

  For example, when PUSCH transmission is scheduled in [SFN = m, subframe n = 7] for a serving cell in which uplink-downlink setting 0 is set, [SFN = m + 1, subframe n = 1], PHICH resources are determined.

  For example, when PUSCH transmission is scheduled in [SFN = m, subframe n = 8] for a serving cell in which uplink-downlink setting 0 is set, [SFN = m + 1, subframe n = 5] is determined from the first resource set in [5].

  For example, when PUSCH transmission is scheduled in [SFN = m, subframe n = 9] for a serving cell in which uplink-downlink setting 0 is set, [SFN = m + 1, subframe n = 5], PHICH resources are determined from the second resource set.

  Hereinafter, the first downlink reference UL-DL configuration and the second downlink reference UL-DL configuration will be described in detail.

  The first downlink reference UL-DL configuration and the second downlink reference UL-DL configuration are the correspondence between the subframe n in which the PDSCH is arranged and the subframe n + k in which the HARQ-ACK corresponding to the PDSCH is transmitted. Is used to specify (select, determine).

  When one primary cell is set, or one primary cell and one secondary cell are set, the first downlink reference UL-DL setting for the primary cell and the first downlink reference UL for the secondary cell -When the DL configuration is the same, in each of the two serving cells, the corresponding first downlink reference UL-DL configuration is transmitted as the subframe n in which the PDSCH is arranged and the HARQ-ACK corresponding to the PDSCH. Used to specify (select, determine) the correspondence with subframe n + k.

  When one primary cell and one secondary cell are configured, and the first downlink reference UL-DL configuration for the primary cell and the first downlink reference UL-DL configuration for the secondary cell are different, each of the two serving cells , The corresponding second downlink reference UL-DL configuration specifies (selects and determines) the correspondence between the subframe n in which the PDSCH is arranged and the subframe n + k in which the HARQ-ACK corresponding to the PDSCH is transmitted Used to do.

  FIG. 21 is a diagram illustrating a correspondence between a subframe nk in which the PDSCH is arranged in this embodiment and a subframe n in which HARQ-ACK corresponding to the PDSCH is transmitted. The mobile station apparatus 1 specifies (selects and determines) the value of k according to the table of FIG.

  In FIG. 21, when one primary cell is set, or one primary cell and one secondary cell are set, the first downlink reference UL-DL setting for the primary cell and the first for the secondary cell are set. When the downlink reference UL-DL configuration is the same, the uplink-downlink configuration refers to the first downlink reference UL-DL configuration.

  In FIG. 21, when one primary cell and one secondary cell are configured, and the first downlink reference UL-DL configuration for the primary cell and the first downlink reference UL-DL configuration for the secondary cell are different, The link-downlink configuration refers to the second downlink reference UL-DL configuration.

  Hereinafter, in the description of FIG. 21, the first downlink reference UL-DL configuration and the second downlink reference UL-DL configuration are simply referred to as uplink-downlink configuration.

  The mobile station apparatus 1 detects the PDSCH transmission that is intended for the mobile station apparatus 1 and should transmit the corresponding HARQ-ACK in the subframe nk (k is specified by the table of FIG. 21) of the serving cell. If so, HARQ-ACK is transmitted in subframe n.

  For example, the mobile station apparatus 1 does not make a HARQ-ACK response to PDSCH transmission used for transmission of system information. For example, the mobile station apparatus 1 makes a HARQ-ACK response to the PDSCH transmission scheduled by the DCI format with the CRC scrambled by the C-RNTI.

  For example, the mobile station apparatus 1 transmits HARQ-ACK to the PDSCH received in subframes n-6 and / or n-7 in the serving cell in which uplink-downlink setting 1 is set in subframe n = 2. To do.

  Note that the mobile station apparatus 1 has the first uplink reference UL-DL setting set, and the first downlink reference UL-DL setting and the transmission direction UL-DL setting are not set. The transmission direction (uplink / downlink) may be specified (selected, determined) based on the uplink reference UL-DL setting.

  Note that the mobile station apparatus 1 has the first uplink reference UL-DL setting and the first downlink reference UL-DL setting set, and the transmission direction UL-DL setting is not set when the first uplink reference UL-DL setting is not set. The transmission direction (uplink / downlink) may be specified (selected, determined) based on the downlink reference UL-DL setting.

  Note that the first downlink reference UL-DL setting may not be defined for a serving cell that has not received the second information. In this case, the mobile station apparatus 1 and the base station apparatus 3 perform the process performed based on the above-described first downlink reference UL-DL setting as the first uplink reference UL-DL setting (serving cell UL-DL Based on the setting). A serving cell that has not received the second information is a serving cell for which dynamic TDD is not set.

  For example, one primary cell and one secondary cell are set, the second information for the primary cell is not received, the second information for the secondary cell is received, and the first uplink for the primary cell When the reference UL-DL setting (serving cell UL-DL setting) and the first downlink reference UL-DL setting for the secondary cell are different and the serving cell is a secondary cell, the first uplink for another serving cell (primary cell) Based on the link reference UL-DL configuration and the pair formed by the first downlink reference UL-DL configuration for the serving cell (secondary cell), the second downlink reference UL-DL configuration for the serving cell (secondary cell) Set May be.

  For example, one primary cell and one secondary cell are set, the second information for the primary cell is not received, the second information for the secondary cell is received, and the first uplink for the primary cell When the reference UL-DL configuration (serving cell UL-DL configuration) and the first downlink reference UL-DL configuration for the secondary cell are different, the corresponding second downlink reference UL-DL configuration in each of the two serving cells May be used to specify (select, determine) the correspondence between the subframe n in which the PDSCH is arranged and the subframe n + k in which the HARQ-ACK corresponding to the PDSCH is transmitted.

  For example, one primary cell and one secondary cell are set, the second information for the primary cell is not received, the second information for the secondary cell is received, and the first uplink for the primary cell When the reference UL-DL configuration (serving cell UL-DL configuration) and the first downlink reference UL-DL configuration for the secondary cell are the same, the corresponding first uplink reference UL-DL configuration (serving cell UL) in the primary cell. -DL setting) is used to specify (select, determine) the correspondence between subframe n in which PDSCH is arranged and subframe n + k in which HARQ-ACK corresponding to the PDSCH is transmitted, in the secondary cell, Corresponding first downlink reference UL-DL configuration But identify correspondence between subframe n + k where HARQ-ACK is transmitted corresponding to the PDSCH subframe n which PDSCH is placed (selected, decision) may be used to.

  For example, one primary cell and one secondary cell are set, the second information for the primary cell is not received, the second information for the secondary cell is received, and the first uplink for the primary cell When the reference UL-DL configuration (serving cell UL-DL configuration) and the first downlink reference UL-DL configuration for the secondary cell are different, the primary cell UL-DL configuration in FIG. 12 and FIG. 1 uplink reference UL-DL configuration is referred to.

  Hereinafter, DRX (Discontinuous Reception) of the present invention will be described.

  The DRX functionality is set by the upper layer (RRC) and processed by the MAC. The DRX function controls the PDCCH monitoring activity (activity) of the mobile station apparatus 1 for the C-RNTI and SPS C-RNTI of the mobile station apparatus 1.

  That is, the DRX function controls the monitoring activity of the mobile station apparatus 1 for the PDCCH used for transmission of the DCI format to which the CRC parity bits scrambled by the C-RNTI or SPS C-RNTI of the mobile station apparatus 1 are added.

  Note that the DRX function described here does not control the monitoring activity of the third information transmitted using the C-RNTI. The third information monitoring activity will be described later.

  If DRX is set when it is RRC_CONNECTED, the mobile station apparatus 1 may monitor PDCCH discontinuously using DRX operation demonstrated below. In other cases, the mobile station apparatus 1 may continuously monitor the PDCCH.

  DRX operation is common to multiple serving cells.

  The upper layer (RRC) controls the DRX operation by setting the following timers and the value of drxStartOffset. Whether drxShortCycleTimer and shortDRX-Cycle are set is optional in the upper layer (RRC).

・ OnDurationTimer
・ Drx-InactivityTimer
Drx-RetransmissionTimer (one for each downlink HARQ process excluding the downlink HARQ process for the broadcast process)
・ LongDRX-Cycle
・ DrxShortCycleTimer (optional)
・ ShortDRX-Cycle (optional)

  The base station apparatus 3 transmits to the mobile station apparatus 1 an RRC message including parameters / information indicating values of onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer, longDRX-Cycle, drxShortCycleTimer, shortDRX-Cycle, and drxStartOffset. Also good.

  The mobile station apparatus 1 may set the values of onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer, longDRX-Cycle, drxShortCycleTimer, shortDRX-Cycle, and drxStartOffset based on the received RRC message.

  longDRX-Cycle and shortDRX-Cycle are collectively referred to as a DRX cycle.

  onDurationTimer indicates the number of PDCCH subframes consecutive from the beginning of the DRX cycle.

  Note that the onDurationTimer related to the long DRX cycle is a sub-frame designated as a downlink subframe by the first uplink reference UL-DL setting and the first downlink reference UL-DL setting that are continuous from the beginning of the long DRX cycle. The frame and the number of subframes indicated as special subframes by the first uplink reference UL-DL configuration and the first downlink reference UL-DL configuration, and the onDurationTimer related to the short DRX is a DRX cycle The number of PDCCH subframes that are consecutive from the beginning may be indicated.

  drx-InactivityTimer indicates the number of consecutive PDCCH subframes after the subframe to which the PDCCH instructing initial transmission of uplink data or downlink data to the mobile station apparatus 1 is mapped.

  drx-RetransmissionTimer indicates the maximum number of consecutive PDCCH subframes for downlink retransmission expected by the mobile station apparatus 1. The same value of drx-RetransmissionTimer is applied to all serving cells.

  The DRX cycle indicates a repetition period of on duration. The on-duration period is followed by a period during which inactivity of PDCCH monitoring of the mobile station apparatus 1 for the C-RNTI and SPS C-RNTI of the mobile station apparatus 1 is possible.

  FIG. 22 is a diagram illustrating an example of a DRX cycle in the present embodiment. In FIG. 22, the horizontal axis is the time axis. In FIG. 22, in the on-duration period P2200, the mobile station apparatus 1 monitors PDCCH / EPDCCH. In FIG. 22, a period P2202 after the on-duration period P2200 is a period in which inactivity is possible. That is, in FIG. 22, the mobile station apparatus 1 does not need to monitor PDCCH / EPDCCH in the period P2202.

  drxShortCycleTimer indicates the number of consecutive subframes that the mobile station apparatus 1 follows the short DRX cycle.

  drxStartOffset indicates a subframe in which the DRX cycle starts.

  The HARQ RTT (Round Trip Time) timer is related to the start of the drx-RetransmissionTimer and is managed for each downlink HARQ process. The HARQ RTT timer indicates a minimum interval from transmission of downlink data to retransmission of the downlink data. That is, the HARQ RTT timer indicates the minimum amount of subframes before downlink HARQ retransmission is expected by the mobile station apparatus 1.

  For TDD, the HARQ RTT timer is set to k + 4 subframes, where k is the interval between the downlink transmission and the HARQ feedback associated with the downlink transmission, specified (selected, determined) according to the table of FIG. .

  In this embodiment, one downlink HARQ process controls HARQ of one downlink data (transport block). Note that one downlink HARQ process may control two downlink data.

  When the DRX cycle is set, the active time includes a period that satisfies at least one of the following conditions (i) to (l).

Condition (i): onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer, or mac-ContentionResolutionTimer is runningCondition (j): A scheduling request is transmitted on PUCCH and is pending Condition (k): An uplink grant for a pending HARQ retransmission may be transmitted, and there is data in the corresponding HARQ buffer. Condition (l): For a preamble not selected by the mobile station apparatus 1 After successfully receiving the random access response, the mobile station apparatus 1 has not received the PDCCH indicating the initial transmission with the C-RNTI.

  Once the timer starts, it runs until the timer is stopped or the timer expires. Otherwise, the timer is not running. If the timer is not running, the timer may be started. If the timer is running, the timer may be restarted. The timer is always started or restarted from the initial value of the timer.

  The preamble is message 1 of the random access procedure and is transmitted by PRACH. The preamble not selected by the mobile station device 1 is related to the contention based random access procedure.

  The random access response is a message 2 of the random access procedure and is transmitted by the PDSCH. The base station device 3 transmits a random access response to the received preamble.

  The mobile station apparatus 1 that is executing the contention-based random access procedure transmits the message 3 after receiving the random access response. The mobile station apparatus 1 monitors the PDCCH / EPDCCH related to the message 4 after the message 3 is transmitted.

  mac-ContentionResolutionTimer indicates the number of consecutive subframes in which mobile station apparatus 1 monitors PDCCH / EPDCCH after message 3 is transmitted.

  Note that the same active time is applied to all activated serving cells. The primary cell is always activated. The secondary cell is activated or deactivated by the MAC. The base station device 3 transmits a MAC CE instructing activation or deactivation of the secondary cell to the mobile station device 1.

  The mobile station apparatus 1 may not monitor the PDCCH / EPDCCH in the deactivated serving cell. The mobile station apparatus 1 may not monitor the PDCCH / EPDCCH for the deactivated serving cell.

  FIG. 23 and FIG. 24 are flowcharts showing an example of the DRX operation in the present embodiment. When DRX is set, the mobile station apparatus 1 performs a DRX operation based on the flowcharts of FIGS. 23 and 24 for each of the subframes.

  If the HARQ RTT timer expires in this subframe and the HARQ process data corresponding to the HARQ RTT timer has not been successfully decoded (S2300), the mobile station device 1 The drx-RetransmissionTimer for the HARQ process corresponding to the HARQ RTT timer is started (S2302), and the process proceeds to S2304. In other cases (S2300), the mobile station apparatus 1 proceeds to S2304.

  If the DRX command MAC CE is received (S2304), the mobile station apparatus 1 stops onDurationTimer and drx-InactivityTimer (S2306), and proceeds to S2308. In other cases (S2304), the mobile station apparatus 1 proceeds to S2308.

  If drx-InactivityTimer expires or if a DRX command MAC CE is received in this subframe (S2308), the mobile station apparatus 1 proceeds to S2310. In other cases (S2308), the mobile station apparatus 1 proceeds to S2316.

  If the short DRX cycle (shortDRX-Cycle) is not set (S2310), the mobile station apparatus 1 uses the long DRX cycle (S2312), and proceeds to S2316. If the short DRX cycle (shortDRX-Cycle) is set (S2310), the mobile station apparatus 1 starts or restarts the drxShortCycleTimer, uses the short DRX cycle (S2312), and proceeds to S2316.

  If drxShortCycleTimer expires in this subframe (S2316), the mobile station apparatus 1 uses the long DRX cycle (S2318), and proceeds to S2400 in FIG. In other cases (S2316), the mobile station apparatus 1 proceeds to S2400 in FIG.

  (1) If a short DRX cycle is used and [(SFN * 10) + subframe number] modulo (shortDRX-Cycle) = (drxStartOffset) modulo (shortDRX-Cycle), or (2) a long DRX cycle If [(SFN * 10) + subframe number] modulo (longDRX-Cycle) = drxStartOffset is used (S2400), the mobile station apparatus 1 starts onDurationTimer (S2402), and proceeds to S2404. In other cases (S2400), the mobile station apparatus 1 proceeds to S2404.

  If all of the following conditions (m) to (q) are satisfied (S2404), the mobile station apparatus 1 monitors PDCCH / EPDCCH in this subframe (2406), and proceeds to S2408.

  If all of the following conditions (m) (q) (r) (s) (t) are satisfied (S2404), the mobile station apparatus 1 monitors PDCCH / EPDCCH in this subframe (2406), and The process proceeds to S2408.

Condition (m): This subframe is included in the active time period. Condition (n): This subframe is a PDCCH subframe. Condition (o): This subframe is a mobile station for half-duplex FDD operation. Not required for uplink transmission to apparatus 1-Condition (p): This subframe is not a half-duplex guard subframe-Condition (q): Measurement gap in which this subframe is set (measurement gap) Condition (r): This subframe is a subframe other than the PDCCH subframe. Condition (s): The mobile station apparatus 1 does not have the capability of simultaneous transmission / reception in a plurality of cells. Condition (t): This subframe is indicated as a downlink subframe by (i) the third information for the primary cell. Subframe, or, it is indicated as a downlink subframe by a third information for (ii) secondary cell, and is the sub-frame that is set for the PRS

  Half-duplex FDD operations include type A half-duplex FDD operations and type B half-duplex FDD operations. The mobile station apparatus 1 may transmit information indicating whether to support type A half-duplex FDD in the FDD band to the base station apparatus 3. The mobile station apparatus 1 may transmit information indicating whether to support type B half-duplex FDD in the FDD band to the base station apparatus 3.

  For type A half-duplex FDD operation, the mobile station apparatus 1 cannot simultaneously perform uplink transmission and downlink reception.

  For type B half-duplex FDD operation, the subframe immediately before the subframe in which the mobile station device 1 performs uplink transmission and the subframe immediately after the subframe in which the mobile station device 1 performs uplink transmission Are half-duplex guard subframes.

  For type B half-duplex FDD operation, the mobile station apparatus 1 cannot simultaneously perform uplink transmission and downlink reception. For the type B half-duplex FDD operation, the mobile station apparatus 1 cannot perform downlink reception in a subframe immediately before a subframe in which uplink transmission is performed. For type B half-duplex FDD operation, the mobile station apparatus 1 cannot perform downlink reception in a subframe immediately after a subframe in which uplink transmission is performed.

  The measurement gap is a time interval for the mobile station apparatus 1 to measure cells of different frequencies and / or different RATs (Radio Access Technology). The base station apparatus 3 transmits information indicating the measurement gap period to the mobile station apparatus 1. The mobile station apparatus 1 sets the measurement gap period based on the information.

  If not all of the conditions (m) (n) (o) (p) (q) are satisfied and all of the conditions (m) (q) (r) (s) (t) are not satisfied (S2404) else / otherwise), the mobile station apparatus 1 ends the DRX operation for this subframe. That is, if at least one of the conditions (m) to (q) is not satisfied, the mobile station apparatus 1 does not have to monitor the PDCCH / EPDCCH in this subframe.

  Note that the conditions used in S2404 are not limited to the conditions (m) to (t). In S2404, different conditions from the conditions (m) to (t) may be used, or from the condition (m). A part of (t) may be used.

  If the downlink assignment received via PDCCH / EPDCCH indicates downlink transmission, or if downlink assignment is set for this subframe (S2408), the mobile station apparatus 1 The HARQ RTT timer for the corresponding HARQ process is started, and the drx-RetransmissionTimer for the corresponding HARQ process is stopped (S2410). In other cases (S2408), the mobile station apparatus 1 proceeds to S2412.

  The state in which the downlink assignment is set means a state in which semi-persistent scheduling is activated by the downlink assignment with the SPS C-RNTI.

  If the downlink assignment received via the PDCCH / EPDCCH indicates downlink or uplink initial transmission (S2412), the mobile station apparatus 1 starts or restarts drx-InactivityTimer (2414). ) And the DRX operation for this subframe is terminated. In other cases (S2412), the mobile station apparatus 1 ends the DRX operation for this subframe.

  In addition, the mobile station apparatus 1 set with DRX does not transmit the periodic SRS when it is not the active time.

  The base station apparatus 3 may transmit to the mobile station apparatus 1 information instructing the mobile station apparatus 1 to set up or release CQI masking.

  The mobile station apparatus 1 that is set for DRX and for which CQI masking (cqi-Mask) is not set up by the higher layer does not transmit CSI via the PUCCH when it is not the active time. The mobile station apparatus 1 in which DRX is set and CQI masking (cqi-Mask) is set up by an upper layer does not transmit CSI via the PUCCH when the onDurationTimer is not running.

  When using a long DRX cycle or a short DRX cycle, a subframe indicated as a downlink subframe by the first uplink reference UL-DL setting and the first downlink reference UL-DL setting, or LongDRX-Cycle, shortDRX-Cycle, and drxStartOffset are set so that onDurationTimer starts in a subframe indicated as a special subframe by the first uplink reference UL-DL setting and the first downlink reference UL-DL setting. Preferably it is set.

  When using a short DRX cycle, longDRX-Cycle and drxStartOffset may be set so that onDurationTimer starts in the flexible subframe.

  Hereinafter, the PDCCH subframe of the present invention will be described.

  In the present embodiment, the mobile station device 1 and the base station device 3 identify the PDCCH subframe based on the first uplink reference UL-DL configuration (UL-DL configuration indicated by the first information).

  In the present embodiment, the mobile station apparatus 1 that communicates with the base station apparatus 3 using one primary cell, and the base station apparatus 3 are configured to perform downlink by the UL-DL configuration indicated by the first information for the primary cell. A subframe indicated as a link subframe or a subframe including DwPTS is specified (selected or determined) as a PDCCH subframe.

  When performing TDD operation using one primary cell, the mobile station apparatus 1 cannot perform transmission and reception simultaneously. That is, a TDD operation performed using only one primary cell is half-duplex TDD.

  In the present embodiment, the mobile station apparatus 1 communicates with the base station apparatus 3 using a plurality of serving cells including one primary cell and one or a plurality of secondary cells, and the base station apparatus 3 has half duplex TDD. In the case of (i) a subframe indicated as a downlink subframe or a subframe including DwPTS by the UL-DL configuration indicated by the first information for the primary cell, and (ii) a secondary cell By the UL-DL configuration indicated by the first information for, a downlink subframe or a subframe including DwPTS is indicated, and a subframe including PRS is specified as a PDCCH subframe.

  In this embodiment, the mobile station apparatus 1 communicates with the base station apparatus 3 using a plurality of serving cells including one primary cell and one or a plurality of secondary cells, and the base station apparatus 3 is a full-duplex TDD. In this case, if a parameter (schedulingCellId) indicating in which serving cell the downlink assignment (downlink control information) for the associated secondary cell is sent is set for the secondary cell, the parameter (schedulingCellId) The sum of subframes indicated as downlink subframes or subframes including DwPTS by a plurality of UL-DL configurations corresponding to each of the plurality of serving cells, except for secondary cells for which A union is identified as a PDCCH subframe. Here, a plurality of UL-DL settings corresponding to each of the plurality of serving cells are indicated by first information for each of the plurality of serving cells.

  In addition, if the parameter (schedulingCellId) indicating which serving cell the downlink assignment for the related secondary cell is sent is not set for any secondary cell, the parameter (schedulingCellId) is set. It is not necessary to remove the secondary cell.

  25, 26, and 27 are diagrams illustrating an example of the PDCCH subframe in the present embodiment. 25, 26, and 27, D indicates a downlink subframe, U indicates an uplink subframe, S indicates a special subframe, and P indicates a PDCCH subframe.

  In FIG. 25, the mobile station apparatus 1 is set with one primary cell, and is not set with a secondary cell. 26 and 27, the mobile station apparatus 1 is set with one primary cell and one secondary cell. 26 and 27, PDCCH / EPDCCH corresponding to the one secondary cell is transmitted in the secondary cell.

  25 and 26, the mobile station apparatus 1 performs a half-duplex TDD operation. In FIG. 27, the mobile station apparatus 1 performs a full duplex TDD operation.

  In FIG. 25, the mobile station apparatus 1 and the base station apparatus 3 are subframes {0 designated as downlink subframes or subframes including DwPTS by the first uplink reference UL-DL setting 3 for the primary cell. 1, 5, 6} are identified as PDCCH subframes.

  In FIG. 26, the mobile station apparatus 1 and the base station apparatus 3 (i) a subframe indicated as a subframe including a downlink subframe or DwPTS by the first uplink reference UL-DL setting 3 for the primary cell. Frame {0, 1, 5, 6}, and (ii) Subframe {9} indicated as a downlink subframe by the first uplink reference UL-DL configuration 1 for the secondary cell and including PRS It is specified as a PDCCH subframe.

  In FIG. 27, the mobile station device 1 and the base station device 3 perform the first uplink reference UL-DL setting 3 for the primary cell and / or the first uplink reference UL-DL setting 2 for the secondary cell. A union {0, 1, 4, 5, 6, 9} of subframes designated as downlink subframes or subframes including DwPTS is specified as a PDCCH subframe.

  As described above, the mobile station apparatus 1 according to the present embodiment uses the C-RNTI based on the reception unit 105 that monitors the downlink control information format via the physical downlink control channel and the active time related to the intermittent reception operation. Whether the HARQ RTT timer related to downlink HARQ retransmission is running by controlling monitoring of the physical downlink control channel used for transmission of the downlink control information format with the CRC parity bit scrambled by A DRX control unit 1017 for controlling monitoring of the physical downlink control channel used for transmission of the downlink control information format including information indicating a transmission direction for a subframe based on the active time. The Obtain.

  Further, the DRX control unit 1017 of the mobile station apparatus 1 of the present embodiment further determines whether there is a possibility that transmission of a physical uplink shared channel and / or an aperiodic SRS is scheduled, and the physical uplink. The monitoring of the physical downlink control channel used for transmission of the downlink control information format including the information is controlled based on whether the transmission of the shared channel and / or the aperiodic SRS is pending.

  That is, the mobile station apparatus 1 of this embodiment is scrambled by the C-RNTI during the active time related to the reception unit 105 that monitors the downlink control information format via the physical downlink control channel and the intermittent reception operation. While controlling the physical downlink control channel used for transmission of the downlink control information format to which the CRC parity bit is added, while the HARQ RTT timer related to downlink HARQ retransmission is running And a DRX control unit 1017 for controlling to monitor the physical downlink control channel used for transmission of the downlink control information format including information indicating a transmission direction for a subframe.

  Further, the intermittent reception control unit 1017 of the mobile station device 1 described above further includes the downlink control to which the CRC parity bit scrambled by C-RNTI is added when at least one of a plurality of conditions is satisfied. The physical downlink control channel used for transmission of the information format and the physical downlink control channel used for transmission of the downlink control information format including the information are controlled not to be monitored, and the plurality of conditions are: Whether or not the subframe is part of a set measurement gap.

  In addition, the mobile station device 1 of the present embodiment has a DRX control unit 1017 that controls monitoring of a PDCCH (Physical Downlink Control Channel) including a C-RNTI (Cell Radio Network Temporary Identifier), and intermittent reception is set. A receiving unit 105 that monitors the PDCCH in a PDCCH subframe during an active time. Here, in this embodiment, with respect to the mobile station apparatus 1 in which a plurality of serving cells including at least two TDD (Time Division duplex) serving cells are set, the mobile station apparatus 1 is capable of simultaneous transmission and reception in the plurality of serving cells. Each of the PDCCH subframes has a first uplink-downlink configuration indicated by a first higher layer parameter (first information for the primary cell) for a primary cell included in the plurality of serving cells. A subframe configured as a subframe including a downlink subframe or a DwPTS (Downlink Pilot Time Slot) and / or a second higher layer parameter (secondary cell) for a secondary cell included in the plurality of serving cells. Second uplink indicated by 1 information) - set as a downlink subframe by downlink set, and a sub-frame including the PRS (Positioning Reference Signals). Here, the at least two TDD serving cells include the primary cell and the secondary cell.

  Further, in the present embodiment, when the intermittent reception is set, the reception unit 105 does not have the capability of simultaneous transmission / reception in the plurality of serving cells during the active time, and the mobile station device 1 Subframes other than the PDCCH subframe are subframes indicated as downlink subframes by the first downlink control information (third information for the primary cell) for the primary cell, or the subframes for the secondary cell. In the case where the subframe includes the PRS and is designated as a downlink subframe by the second downlink control information (third information for the secondary cell), the PDCCH is monitored in a subframe other than the PDCCH subframe. .

  Moreover, in this embodiment, the mobile station apparatus 1 is provided with the transmission part 107 which transmits the information which shows the combination of the 1 or several band which supports TDD (Time Division Duplex) interband carrier aggregation. In TDD (Time Division Duplex) inter-band carrier aggregation, serving cells belonging to different TDD bands are aggregated. One band includes one or a plurality of serving cells.

  In the present embodiment, the transmission unit 107 includes the TDD (Time Division Duplex) including a plurality of serving cells having different uplink-downlink settings for each of the one or a plurality of band combinations. Information indicating whether to support inter-band carrier aggregation is transmitted, and the plurality of serving cells include one primary cell and one or more secondary cells. In the TDD (Time Division Duplex) inter-band carrier aggregation including a plurality of serving cells having different uplink-downlink settings, a plurality of serving cells having different uplink-downlink settings are aggregated.

  Further, in the present embodiment, the transmission unit 107 performs simultaneous transmission and reception in the plurality of serving cells belonging to each of the one or more band combinations for each of the one or more band combinations. Send information about capabilities. Information regarding the capability of simultaneous transmission / reception in the plurality of serving cells belonging to each of the band combinations is defined for each of the one or more band combinations. The information regarding the capability of simultaneous transmission / reception in the plurality of serving cells belonging to a certain band combination may indicate whether the plurality of serving cells belonging to the certain band combination have the capability of simultaneous transmission / reception.

  Thereby, in the radio | wireless communications system to which TDD is applied, the mobile station apparatus 1 can communicate with the base station apparatus 3 efficiently.

  A program that operates in the base station apparatus 3 and the mobile station apparatus 1 related to the present invention is a program (computer function) that controls a CPU (Central Processing Unit) or the like so as to realize the functions of the above-described embodiments related to the present invention. Program). Information handled by these devices is temporarily stored in RAM (Random Access Memory) during the processing, and then stored in various ROMs such as Flash ROM (Read Only Memory) and HDD (Hard Disk Drive). Reading, correction, and writing are performed by the CPU as necessary.

  Note that the mobile station device 1 and a part of the base station device 3 in the above-described embodiment may be realized by a computer. In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed.

  Here, the “computer system” is a computer system built in the mobile station apparatus 1 or the base station apparatus 3 and includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system.

  Furthermore, the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In such a case, a volatile memory inside a computer system serving as a server or a client may be included and a program that holds a program for a certain period of time. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  In addition, the base station device 3 in the above-described embodiment can also be realized as an aggregate (device group) composed of a plurality of devices. Each of the devices constituting the device group may include a part or all of each function or each functional block of the base station device 3 according to the above-described embodiment. The device group only needs to have one function or each function block of the base station device 3. Moreover, the mobile station apparatus 1 according to the above-described embodiment can also communicate with the base station apparatus as an aggregate.

  Further, the base station apparatus 3 in the above-described embodiment may be an EUTRAN (Evolved Universal Terrestrial Radio Access Network). In addition, the base station device 3 in the above-described embodiment may have a part or all of the functions of the upper node for the eNodeB.

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

  In the above-described embodiment, the mobile station device is described as an example of the terminal device or the communication device. However, the present invention is not limited to this, and is a stationary type or a non-movable type installed indoors and outdoors. The present invention can also be applied to terminal devices or communication devices such as AV devices, kitchen devices, cleaning / washing devices, air conditioning devices, office devices, vending machines, and other daily life devices.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design changes and the like without departing from the gist of the present invention. The present invention can be modified in various ways within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. It is. Moreover, it is the element described in each said embodiment, and the structure which substituted the element which has the same effect is also contained.

1 (1A, 1B, 1C) Mobile station apparatus 3 Base station apparatus 101 Upper layer processing section 103 Control section 105 Reception section 107 Transmission section 301 Upper layer processing section 303 Control section 305 Reception section 307 Transmission section 1011 Radio resource control section 1013 sub Frame setting unit 1015 Scheduling information interpretation unit 1017 DRX control unit 3011 Radio resource control unit 3013 Subframe setting unit 3015 Scheduling unit 3017 DRX control unit

Claims (18)

An intermittent reception control unit that controls monitoring of a PDCCH (Physical Downlink Control Channel) including a C-RNTI (Cell Radio Network Temporary Identifier);
A reception unit that monitors the PDCCH in a PDCCH subframe during an active time when discontinuous reception is set, and
For a terminal device in which a plurality of serving cells including at least two TDD (Time Division duplex) serving cells are set, the terminal device does not have the capability of simultaneous transmission and reception in the plurality of serving cells,
Each of the PDCCH subframes includes a downlink subframe or a DwPTS (Downlink Pilot Time Slot) according to a first uplink-downlink configuration indicated by a first higher layer parameter for a primary cell included in the plurality of serving cells. A subframe configured as a subframe included and / or configured as a downlink subframe by a second uplink-downlink configuration indicated by a second higher layer parameter for a secondary cell included in the plurality of serving cells. And the terminal device which is a sub-frame containing PRS (Positioning Reference Signals). When the intermittent reception is set, the receiving unit does not have the capability of simultaneous transmission / reception in the plurality of serving cells during the active time, and subframes other than the PDCCH subframe are: A subframe indicated as a downlink subframe by the first downlink control information for the primary cell, or indicated as a downlink subframe by the second downlink control information for the secondary cell, and the PRS The terminal apparatus according to claim 1, wherein the PDCCH is monitored in a subframe other than the PDCCH subframe when the subframe includes the subframe. The terminal device according to claim 1, wherein the at least two TDD serving cells include the primary cell and the secondary cell. The terminal device according to claim 1, further comprising: a transmission unit that transmits information indicating a combination of one or more bands that support TDD (Time Division Duplex) inter-band carrier aggregation. Whether the transmitter supports the TDD (Time Division Duplex) inter-band carrier aggregation including a plurality of serving cells having different uplink-downlink configurations for each of the one or a plurality of band combinations. Send information indicating
The terminal device according to claim 4, wherein the plurality of serving cells include the primary cell and the secondary cell. Whether the transmission unit has the capability of simultaneous transmission / reception in the plurality of serving cells belonging to each of the one or more band combinations for each of the one or more band combinations The terminal device according to claim 5, which transmits information indicating A communication method used for a terminal device,
Controls monitoring of PDCCH (Physical Downlink Control Channel) including C-RNTI (Cell Radio Network Temporary Identifier),
If discontinuous reception is set, the PDCCH is monitored in the PDCCH subframe during the active time,
For a terminal device in which a plurality of serving cells including at least two TDD (Time Division duplex) serving cells are set, the terminal device does not have the capability of simultaneous transmission and reception in the plurality of serving cells,
Each of the PDCCH subframes includes a subframe including a downlink subframe or a DwPTS (Downlink Pilot Time Slot) according to an uplink-downlink configuration indicated by a first higher layer parameter for a primary cell included in the plurality of serving cells. And / or PRS (Positioning), and / or PRS (Positioning) is set by the uplink-downlink setting indicated by the second higher layer parameter for the secondary cell included in the plurality of serving cells. A communication method that is a subframe including Reference Signals. When the intermittent reception is set, during the active time, the terminal device does not have the capability of simultaneous transmission / reception in the plurality of serving cells, and subframes other than the PDCCH subframe are not connected to the primary cell. A subframe indicated as a downlink subframe by one downlink control information, or a subframe indicated by a second downlink control information for the secondary cell as a downlink subframe and including the PRS In this case, the PDCCH is monitored in a subframe other than the PDCCH subframe. The communication method according to claim 7, wherein the at least two TDD serving cells include the primary cell and the secondary cell. The communication method according to claim 7, wherein information indicating a combination of one or more bands that support TDD (Time Division Duplex) inter-band carrier aggregation is transmitted. Information indicating whether to support the TDD (Time Division Duplex) inter-band carrier aggregation including a plurality of serving cells having different uplink-downlink settings is transmitted to each of the one or a plurality of band combinations. And
The communication method according to claim 10, wherein the plurality of serving cells include the primary cell and the secondary cell. Information indicating whether or not the terminal device has the capability of simultaneous transmission / reception in the plurality of serving cells belonging to each of the one or more band combinations is transmitted to each of the one or more band combinations. The communication method according to claim 11. A function of controlling monitoring of PDCCH (Physical Downlink Control Channel) including C-RNTI (Cell Radio Network Temporary Identifier);
When discontinuous reception is set, during the active time, the terminal device has a series of functions including the function of monitoring the PDCCH in the PDCCH subframe,
For the terminal device in which a plurality of serving cells including at least two TDD (Time Division duplex) serving cells are set, the terminal device does not have the capability of simultaneous transmission and reception in the plurality of serving cells,
Each of the PDCCH subframes includes a subframe including a downlink subframe or a DwPTS (Downlink Pilot Time Slot) according to an uplink-downlink configuration indicated by a first higher layer parameter for a primary cell included in the plurality of serving cells. And / or PRS (Positioning), and / or PRS (Positioning) is set by the uplink-downlink setting indicated by the second higher layer parameter for the secondary cell included in the plurality of serving cells. An integrated circuit that is a subframe containing Reference Signals. When the intermittent reception is set, during the active time, the terminal device does not have the capability of simultaneous transmission / reception in the plurality of serving cells, and subframes other than the PDCCH subframe are not connected to the primary cell. A subframe indicated as a downlink subframe by one downlink control information, or a subframe indicated by a second downlink control information for the secondary cell as a downlink subframe and including the PRS The integrated circuit according to claim 13, wherein the terminal device has a function of monitoring the PDCCH in a subframe other than the PDCCH subframe. The integrated circuit according to claim 13, wherein the at least two TDD serving cells include the primary cell and the secondary cell. The integrated circuit according to claim 13, wherein the terminal device has a function of transmitting information indicating a combination of one or a plurality of bands that support TDD (Time Division Duplex) inter-band carrier aggregation. Information indicating whether to support the TDD (Time Division Duplex) inter-band carrier aggregation including a plurality of serving cells having different uplink-downlink settings is transmitted to each of the one or a plurality of band combinations. The terminal device has a function to
The integrated circuit according to claim 16, wherein the plurality of serving cells include the primary cell and the secondary cell. Information indicating whether or not the terminal device has the capability of simultaneous transmission / reception in the plurality of serving cells belonging to each of the one or more band combinations is transmitted to each of the one or more band combinations. The integrated circuit according to claim 17, wherein the terminal device has a function to perform the function.

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