WO2015045731A1 - 端末装置、基地局装置、集積回路、および、通信方法 - Google Patents
端末装置、基地局装置、集積回路、および、通信方法 Download PDFInfo
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- WO2015045731A1 WO2015045731A1 PCT/JP2014/072732 JP2014072732W WO2015045731A1 WO 2015045731 A1 WO2015045731 A1 WO 2015045731A1 JP 2014072732 W JP2014072732 W JP 2014072732W WO 2015045731 A1 WO2015045731 A1 WO 2015045731A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1864—ARQ related signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1438—Negotiation of transmission parameters prior to communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- the present invention relates to a terminal device, a base station device, an integrated circuit, and a communication method.
- LTE Long Term Evolution
- EUTRA Evolved Universal Terrestrial Radio Access
- 3GPP Third Generation Partnership Project
- a base station apparatus is also called eNodeB (evolvedvolveNodeB), and a terminal device is also called UE (UserUEEquipment).
- 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 supports Time Division Duplex (TDD).
- TDD Time Division Duplex
- uplink signals and downlink signals are time division multiplexed.
- the traffic adaptation technique is a technique for changing the ratio of uplink resources to downlink resources in accordance with uplink traffic and downlink traffic. This traffic adaptation technique is also referred to as dynamic TDD.
- 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.
- the terminal 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.
- Non-Patent Document 1 determines the HARQ (Hybrid Automatic Repeat Repeat) timing for PDSCH (Physical Downlink Shared Channel) based on the newly introduced UL-DL configuration (uplink-downlink configuration), and the first UL-DL configuration Is described to determine HARQ timing for PUSCH (Physical Uplink Shared Channel).
- HARQ Hybrid Automatic Repeat Repeat
- Non-Patent Document 2 (a) UL / DL Reference Configuration is introduced, and (b) some subframes are either uplink or downlink depending on the dynamic grant / assignment from the scheduler. It can be scheduled for.
- PDSCH Physical Downlink Shared Channel
- the present invention has been made in view of the above points, and an object thereof is to provide a terminal device, a base station device, an integrated circuit, and a communication method capable of efficiently transmitting and receiving downlink data. With the goal.
- the embodiment of the present invention takes the following measures. That is, the terminal device in one embodiment of the present invention is a terminal device that communicates with the base station device, receives the first information and the second information, and receives the third information on the physical downlink control channel.
- the physical downlink control channel When the physical downlink control channel is detected, a special subframe is indicated based on the UL-DL setting given by the first information, and based on the UL-DL setting given by the third information. If a downlink control information format 1A to which a CRC parity bit scrambled by C-RNTI is added in a subframe (n1-k1) designated as a downlink subframe is detected, the subframe (n1-k1) is detected.
- a special subframe is indicated based on the UL-DL setting given by the first information.
- the first information in the subframe (n2-k2) Assuming a special subframe based on a given UL-DL configuration, a receiving unit that detects a corresponding physical downlink shared channel and HARQ- for the physical downlink shared channel detected in the subframe (n1-k1) ACK in subframe (n1) And Shin, and a transmission unit for transmitting the HARQ-ACK, in subframe (n2) with respect to said subframe (n2-k2) detected physical downlink shared channel in.
- the k1 and the k2 are based on the UL-DL configuration given by the second information.
- a base station apparatus is a base station apparatus that communicates with a terminal apparatus, transmits first information and second information, and physically transmits third information.
- a special subframe is indicated based on the UL-DL setting given by the first information, and the third information
- a downlink control information format 1A to which a CRC parity bit scrambled by C-RNTI is added is transmitted in a subframe (n1-k1) indicated as a downlink subframe based on the UL-DL setting given by , Based on the UL-DL configuration given by the third information in the subframe (n1-k1)
- Based on the UL-DL setting given by the first information when transmission is performed on the corresponding physical downlink shared channel assuming no subframe and transmission is not performed on the physical downlink control channel If the downlink control information format 1A to which the CRC parity bit scrambled by C-RNTI is transmitted in the subframe (n2-k
- An integrated circuit is an integrated circuit mounted on a terminal device that communicates with a base station device, and receives first information and second information. 3 is received on the physical downlink control channel, and when the physical downlink control channel is detected, a special subframe is indicated based on the UL-DL configuration given by the first information, and the third Detects downlink control information format 1A to which a CRC parity bit scrambled by C-RNTI is added in a subframe (n1-k1) designated as a downlink subframe based on the UL-DL setting given by the information of If so, it is based on the UL-DL configuration given by the third information in the subframe (n1-k1).
- a downlink control information format 1A to which a CRC parity bit scrambled by C-RNTI is added in a subframe (n2-k2) designated as a special subframe is detected, the subframe (n2-k2) A function for detecting a corresponding physical downlink shared channel assuming a special subframe based on the UL-DL configuration given by the first information, and a physical downlink detected in the subframe (n1-k1) HARQ-ACK for shared channel is supported.
- n1 the HARQ-ACK for the detected physical downlink shared channel in the subframe (n2-k2), a function of transmitting the subframe (n2), the exerting on the terminal device.
- the k1 and the k2 are based on the UL-DL configuration given by the second information.
- An integrated circuit according to another embodiment of the present invention is an integrated circuit mounted on a base station apparatus that communicates with a terminal apparatus, and transmits first information and second information. 3 is transmitted on the physical downlink control channel, and when transmission on the physical downlink control channel is not performed, a special subframe is indicated based on the UL-DL setting given by the first information.
- Downlink control information format to which a CRC parity bit scrambled by C-RNTI is added in a subframe (n1-k1) indicated as a downlink subframe based on the UL-DL setting given by the third information If 1A is transmitted, UL-D given by the third information in the subframe (n1-k1) The UL given by the first information when transmission is performed on the corresponding physical downlink shared channel and transmission is performed on the physical downlink control channel assuming downlink subframes based on the setting.
- the subframe ( n2-k2) assuming a special subframe based on the UL-DL configuration given by the first information, a function of performing transmission on the corresponding physical downlink shared channel, and the subframe (n1-k1) )
- the subframe (n1-k1) For physical downlink shared channel detected in A function of receiving HARQ-ACK in subframe (n1) and receiving HARQ-ACK for the physical downlink shared channel detected in subframe (n2-k2) in subframe (n2); Let the station equipment demonstrate.
- the k1 and the k2 are based on the UL-DL configuration given by the second information.
- the communication method in other one Embodiment of this invention is a communication method of the terminal device which communicates with a base station apparatus, Comprising: 1st information, 2nd information is received, 3rd information Is received on the physical downlink control channel, and when the physical downlink control channel is detected, a special subframe is indicated based on the UL-DL setting given by the first information, and the third information If downlink control information format 1A to which a CRC parity bit scrambled by C-RNTI is added in a subframe (n1-k1) designated as a downlink subframe based on a given UL-DL setting is detected , Based on the UL-DL configuration given by the third information in the subframe (n1-k1) In the case where a corresponding physical downlink shared channel is detected and a physical downlink control channel is not detected on the assumption of a link subframe, a special subframe is determined based on the UL-DL setting given by the first information.
- the subframe (n2-k2) Assuming a special subframe based on the UL-DL configuration given by the information of 1, the corresponding physical downlink shared channel is detected, and HARQ for the physical downlink shared channel detected in the subframe (n1-k1) -ACK to subframe (n1) Send fraud and mitigating risk HARQ-ACK for the detected physical downlink shared channel in the subframe (n2-k2), transmitted in subframes (n2).
- the k1 and the k2 are based on the UL-DL configuration given by the second information.
- the communication method in other one Embodiment of this invention is a communication method of the base station apparatus which communicates with a terminal device, Comprising: 1st information, 2nd information is transmitted, 3rd information Is transmitted on the physical downlink control channel, and when the transmission on the physical downlink control channel is not performed, a special subframe is indicated based on the UL-DL setting given by the first information, and the first Transmits downlink control information format 1A to which a CRC parity bit scrambled by C-RNTI is added in a subframe (n1-k1) indicated as a downlink subframe based on the UL-DL setting given by information 3 If so, it is based on the UL-DL configuration given by the third information in the subframe (n1-k1).
- UL-DL configuration given by the first information when transmission is performed on the corresponding physical downlink shared channel and transmission is performed on the physical downlink control channel If the downlink control information format 1A to which the CRC parity bit scrambled by C-RNTI is added is transmitted in the subframe (n2-k2) designated as the special subframe based on the subframe (n2-k2) ), A special subframe is assumed based on the UL-DL setting given by the first information, transmission is performed on the corresponding physical downlink shared channel, and the physical detected in the subframe (n1-k1) is detected.
- the HARQ-AC for downlink shared channel And received in sub-frame (n1), the HARQ-ACK for the detected physical downlink shared channel in the subframe (n2-k2), receives the subframe (n2).
- the k1 and the k2 are based on the UL-DL configuration given by the second information.
- downlink data can be efficiently transmitted and received.
- FIG. 2 is a schematic block diagram illustrating a configuration of a terminal device 1.
- FIG. 2 is a schematic block diagram showing a configuration of a base station device 3.
- a plurality of cells may be set in the terminal device.
- a technique in which a terminal device communicates via a plurality of cells is referred to as cell aggregation or carrier aggregation.
- this embodiment may be applied to each of a plurality of cells set for the terminal device.
- the present invention may be applied to some of a plurality of cells set for the terminal device.
- the cell set with respect to a terminal device is also called a serving cell.
- the plurality of cells to be set include one primary cell and one or more secondary cells.
- the primary cell may be a serving cell that has undergone an initial connection establishment (initial connectionabestablishment) procedure, a serving cell that has initiated 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 later.
- the TDD scheme may be applied to all of a plurality of cells.
- cells to which the TDD scheme is applied and cells to which an FDD (FrequencyequDivisionplexDuplex) scheme is applied may be aggregated. That is, in the case of cell aggregation, the present embodiment may be applied to some cells.
- FIG. 1 is a conceptual diagram of a wireless communication system in the present embodiment.
- the radio communication system in the present embodiment includes terminal apparatuses 1A to 1C and a base station apparatus 3.
- the terminal devices 1A to 1C are also referred to as the terminal device 1.
- the following uplink physical channels are used in uplink wireless communication from the terminal device 1 to the base station device 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 used for transmitting uplink control information (Uplink Control Information: UCI).
- Uplink control information includes downlink channel state information (Channel State Information: CSI), scheduling request (Scheduling Request: SR) indicating a PUSCH resource request, downlink data (Transport block, Downlink-Shared Channel, DL-SCH).
- ACK acknowledgenowledgement
- NACK negative-acknowledgement
- ACK / NACK is also referred to as HARQ-ACK, HARQ feedback, or response information.
- PUSCH is used to transmit uplink data (Transport block, Uplink-Shared Channel: UL-SCH). That is, uplink data transmission on the UL-SCH is performed via the PUSCH. That is, the UL-SCH that is a transport channel is mapped to the PUSCH that is a physical channel.
- the PUSCH may also be used to transmit HARQ-ACK and / or channel state information along with uplink data. Also, the PUSCH may be used to transmit only channel state information or only HARQ-ACK and channel state information.
- PUSCH is used to transmit an RRC message.
- the RRC message is information / signal processed in a radio resource control (Radio-Resource-Control: -RRC) layer.
- the PUSCH is used to transmit a MAC CE (Control Element).
- the MAC CE is information / signal processed (transmitted) in the medium access control (MAC) layer.
- PRACH is used to transmit a random access preamble.
- the PRACH is used to indicate an initial connection establishment (initial connection establishment) procedure, a handover procedure, a connection re-establishment (connection re-establishment) procedure, synchronization for uplink transmission (timing adjustment), and a request for PUSCH resources.
- 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.
- UL RS Uplink Reference Signal
- DMRS Demodulation Reference Signal
- SRS Sounding Reference Signal
- DMRS is related to transmission of PUSCH or PUCCH.
- DMRS is time-multiplexed with PUSCH or PUCCH.
- the base station device 3 uses DMRS to perform propagation channel correction of PUSCH or PUCCH.
- the base station apparatus 3 uses SRS to measure the uplink channel state.
- the terminal device 1 transmits the first SRS in the first resource set by the upper layer. Furthermore, when the terminal device 1 receives information indicating that the transmission of the SRS is requested via the PDCCH, the terminal device 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.
- the following downlink physical channels are used in downlink wireless communication from the base station apparatus 3 to the terminal 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 terminal device 1.
- MIB Master Information Block
- BCH Broadcast Channel
- the MIB is transmitted at 40 ms intervals. Further, the MIB is repeatedly transmitted at a cycle of 10 ms.
- the MIB includes information indicating SFN (System Frame Number).
- SFN indicates a radio frame number.
- MIB is system information.
- PCFICH is used for transmitting 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.
- HARQ indicator HARQ feedback, response information
- ACK acknowledgement
- NACK Negative ACKnowledgement
- DCI Downlink Control Information
- a plurality of DCI formats are defined for transmission of downlink control information. That is, fields for downlink control information are defined in the DCI format and mapped to information bits.
- DCI format 1A and DCI format 1C used for scheduling one PDSCH (transmission of one downlink transport block) in one cell are defined as DCI formats for the downlink.
- the DCI format for the downlink includes downlink control information such as information on resource block allocation, information on MCS (Modulation and Coding scheme), and information on a TPC command for PUCCH.
- the DCI format for the downlink is also referred to as a downlink grant (or downlink assignment).
- DCI format 0 used for scheduling one PUSCH (transmission of one uplink transport block) in one cell is defined.
- the DCI format for uplink includes information related to scheduling of PUSCH.
- the DCI format for the uplink includes information on resource block assignment and / or hopping (Resource block assignment and / or hopping resource allocation), MCS and / or redundancy seaversion (Modulation and coding scheme and / or redundancy version) Information on TPC command (TPC command), information on cyclic shift (Cyclic shift), and information on new data indicator (New data indicator).
- TPC command TPC command
- information on cyclic shift Cyclic shift
- New data indicator new data indicator
- the DCI format for uplink is also referred to as uplink grant (or uplink assignment).
- the terminal device 1 When the PDSCH resource is scheduled using the downlink assignment, the terminal device 1 receives the downlink data on the scheduled PDSCH. Moreover, when the PUSCH resource is scheduled using the uplink grant, the terminal device 1 transmits uplink data and / or uplink control information using the scheduled PUSCH.
- the terminal device 1 monitors a set of PDCCH candidates (PDCCH candidates) and / or EPDCCH candidates (EPDCCH candidates).
- PDCCH may indicate PDCCH and / or EPDDCH.
- the PDCCH candidate indicates a candidate that the PDCCH may be mapped and transmitted by the base station apparatus 3.
- the term “monitor” may include the meaning that the terminal apparatus 1 attempts to decode each PDCCH in the set of PDCCH candidates according to all the DCI formats to be monitored.
- the search space includes a common search space (CSS: Common Search Space) and a user device specific search space (USS: UE-specific Search Space).
- CSS is an area where a plurality of terminal apparatuses 1 monitor PDCCH / EPDCCH in common.
- the USS is an area defined based on at least C-RNTI. The terminal device 1 monitors PDCCH in CSS and / or USS, and detects PDCCH addressed to itself.
- RNTI assigned to the terminal device 1 by the base station device 3 is used for transmission of downlink control information (transmission on the PDCCH). Specifically, a CRC (Cyclic Redundancy Check) parity bit is added to the DCI format (which may be downlink control information), and after the CRC parity bit is added, the CRC parity bit is scrambled by the RNTI.
- the CRC parity bit added to the DCI format may be obtained from the payload of the DCI format.
- the terminal device 1 tries to decode the DCI format to which the CRC parity bit scrambled by the RNTI is added, and detects the DCI format in which the CRC is successful as the DCI format addressed to the own device (also called blind decoding). ) That is, the terminal device 1 detects the PDCCH accompanied by the CRC scrambled by the RNTI. Also, the terminal device 1 detects a PDCCH accompanied by a DCI format to which a CRC parity bit scrambled by RNTI is added.
- RNTI includes C-RNTI (Cell-Radio Network Temporary Identifier).
- C-RNTI Cell-Radio Network Temporary Identifier
- the C-RNTI is a unique (unique) identifier for the terminal device 1 used for RRC connection and scheduling identification.
- C-RNTI is used for unicast transmissions that are dynamically scheduled.
- RNTI includes SPS C-RNTI (Semi-Persistent Scheduling C-RNTI).
- SPS C-RNTI Semi-Persistent Scheduling C-RNTI
- the SPS C-RNTI is a unique (unique) identifier for the terminal device 1 that is used for semi-persistent scheduling.
- SPS C-RNTI is used for semi-persistently scheduled unicast transmissions.
- RNTI includes RA-RNTI (Random Access RNTI).
- RA-RNTI is an identifier used for transmission of a random access response message. That is, RA-RNTI is used for transmission of a random access response message in a random access procedure. For example, when transmitting a random access preamble, the terminal device 1 monitors the PDCCH accompanied by the CRC scrambled by the RA-RNTI. Also, the terminal device 1 receives a random access response on the PDSCH based on the detection of the PDCCH with the CRC scrambled by the RA-RNTI.
- P-RNTI includes P-RNTI (Paging RNTI).
- P-RNTI is an identifier used for notification of changes in paging and system information.
- P-RNTI is used for paging and transmission of system information messages.
- the terminal device 1 receives paging on the PDSCH based on the detection of the PDCCH with the CRC scrambled by the P-RNTI.
- SI-RNTI System Information RNTI
- SI-RNTI is an identifier used for broadcasting system information.
- SI-RNTI is used for transmission of a system information message.
- the terminal device 1 receives the system information message on the PDSCH based on the detection of the PDCCH with the CRC scrambled by the SI-RNTI.
- PDCCH with CRC scrambled by C-RNTI may be transmitted by USS or CSS.
- the PDCCH with CRC scrambled by RA-RNTI may be transmitted only by CSS.
- the PDCCH with CRC scrambled by P-RNTI may be transmitted only by CSS.
- the PDCCH with CRC scrambled by SI-RNTI may be transmitted only by CSS.
- DCI format 1A is included in the DCI format to which CRC parity bits scrambled by C-RNTI and SPS C-RNTI are added.
- the DCI format to which the CRC parity bits scrambled by RA-RNTI, SI-RNTI, or P-RNTI are added includes DCI format 1A and DCI format 1C.
- CRC parity bits scrambled by C-RNTI, SPS C-RNTI, RA-RNTI, P-RNTI, or SI-RNTI are added to DCI format 1A.
- CRC parity bits scrambled by RA-RNTI, P-RNTI, or SI-RNTI are added to DCI format 1C.
- the terminal device 1 changes the interpretation of the DCI format 1A based on which RNTI the CRC parity bit added to the DCI format 1A is scrambled.
- transmission of downlink data on the PDSCH is also referred to as transmission on the PDSCH.
- reception of downlink data on the PDSCH is also referred to as reception on the PDSCH.
- the PDSCH is used to transmit downlink data (downlink transport block, DL-SCH).
- the PDSCH is used to transmit a system information block type 1 message.
- the system information block type 1 message is cell specific (cell specific) information.
- the system information message may include a system information block X other than the system information block type 1.
- the system information message is cell specific (cell specific) information.
- PDSCH is used to transmit an RRC message.
- the RRC message transmitted from the base station apparatus 3 may be common to a plurality of terminal apparatuses 1 in the cell. Further, the RRC message transmitted from the base station device 3 may be a message dedicated to a certain terminal device 1 (also referred to as dedicated signaling). That is, user device specific (user device specific) information is transmitted to a certain terminal device 1 using a dedicated message.
- the PDSCH is used to transmit the MAC CE.
- the RRC message and / or MAC CE is also referred to as higher layer signaling.
- PMCH is used to transmit multicast data (Multicast Channel: MCH).
- 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.
- SS Synchronization signal
- DL RS Downlink Reference Signal
- the synchronization signal is used for the terminal device 1 to synchronize the downlink frequency domain and time domain.
- the synchronization signal is arranged in subframes 0, 1, 5, and 6 in a radio frame.
- the synchronization signal is arranged in subframes 0 and 5 in the radio frame.
- the downlink reference signal is used for the terminal device 1 to correct the propagation path of the downlink physical channel. Also, the downlink reference signal may be used for the terminal apparatus 1 to calculate downlink channel state information.
- the following five types of downlink reference signals are used.
- -CRS Cell-specific Reference Signal
- URS UE-specific Reference Signal
- PDSCH PDSCH
- DMRS Demodulation Reference Signal
- EPDCCH 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 the entire bandwidth of the subframe.
- CRS is used to demodulate PBCH / PDCCH / PHICH / PCFICH / PDSCH.
- the CRS may be used for the terminal device 1 to calculate downlink channel state information.
- PBCH / PDCCH / PHICH / PCFICH is transmitted through an antenna port used for CRS transmission.
- URS related to PDSCH is transmitted in a subframe and a band used for transmission of PDSCH related to URS.
- URS is used to demodulate the PDSCH with which the URS is associated.
- the PDSCH is transmitted through an antenna port used for CRS or URS transmission.
- the DCI format 1A is used for scheduling of PDSCH transmitted through an antenna port used for CRS transmission.
- DMRS related to EPDCCH is transmitted in subframes and bands used for transmission of EPDCCH related to 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.
- NZP CSI-RS is transmitted in the set subframe.
- the resource for transmitting the NZP CSI-RS is set by the base station apparatus.
- the NZP CSI-RS is used by the terminal device 1 to calculate downlink channel state information.
- the terminal device 1 performs signal measurement (channel measurement) using NZP CSI-RS.
- ZP CSI-RS resources are set by the base station device 3.
- the base station apparatus 3 transmits ZP CSI-RS with zero output. That is, the base station apparatus 3 does not transmit ZP CSI-RS.
- the base station apparatus 3 does not transmit PDSCH and EPDCCH in the resource set by ZP CSI-RS.
- the terminal device 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.
- PMCH is transmitted through an antenna port used for transmission of MBSFN RS.
- PRS is used by a terminal device to measure the geographical location of the device itself.
- 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 (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 (transport block: TB) or a MAC PDU (Protocol Data Unit).
- HARQ HybridbrAutomatic Repeat reQuest
- the transport block is a unit of data that the MAC layer delivers to the physical layer.
- the transport block is mapped to a code word, and an encoding process is performed for each code word.
- FIG. 2 is a diagram showing a schematic configuration of a radio frame in the present embodiment.
- the horizontal axis indicates the time axis.
- each radio frame is 10 ms long.
- Each radio frame is composed of two half frames, and 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.
- the subframe is also referred to as TTI (Transmission Time Interval).
- subframes In the present 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 downlink subframe may include an MBSFN subframe and / or a non-MBSFN subframe.
- the base station apparatus 3 may set a subset of downlink subframes in a radio frame as an MBSFN subframe.
- the MBSFN subframe indicates a subframe reserved for MBSFN.
- the MBSFN subframe may be instructed for each serving cell based on a parameter transmitted by the base station apparatus 3 using a higher layer signal.
- a subframe that is not set as an MBSFN subframe in a radio frame is referred to as a non-MBSFN subframe or a unicast subframe.
- the base station apparatus 3 can perform transmission on the PDSCH and cannot perform transmission on the PMCH.
- the terminal device 1 decodes the PDSCH in the non-MBSFN subframe.
- the base station apparatus 3 can perform transmission by PDSCH or transmission by PMCH in the MBSFN subframe.
- the terminal apparatus 1 sets a PRS opportunity only in the subframe and the MBSFN subframe instructed to decode the PMCH using the upper layer signal, and the CP (Cyclic Prefix) in the subframe 0 is set.
- PDSCH is decoded in MBSFN subframes other than the subframe set by the higher layer as part of the PRS opportunity when the length is normal CP.
- the special subframe consists 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.
- the UpPTS is a field reserved for uplink transmission.
- GP is a field in which downlink transmission and uplink transmission are not performed.
- the special subframe may be configured only by DwPTS and GP, or may be configured only by GP and UpPTS.
- subframe 0, subframe 5, and DwPTS may always be reserved for downlink transmission.
- the UpPTS and the subframe after the special subframe may be always reserved for uplink transmission.
- a single radio frame includes at least a downlink subframe, an uplink subframe, and a special subframe.
- FIG. 3 is a diagram showing a configuration of slots in the present embodiment.
- the horizontal axis represents the time axis
- the vertical axis represents the frequency axis.
- normal CP normal Cyclic Prefix
- an extended CP extended Cyclic Prefix
- the physical signal or physical channel transmitted in each slot is represented by a resource grid.
- the resource grid is defined by a plurality of subcarriers and a plurality of OFDM symbols.
- 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. For example, 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. Resource elements are identified using subcarrier numbers and OFDM symbol or SC-FDMA symbol numbers.
- the resource block is used to express mapping of a physical channel (PDSCH, PUSCH, etc.) to a resource element.
- PDSCH physical channel
- PUSCH PUSCH
- 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 seven consecutive OFDM symbols or SC-FDMA symbols in the time domain and twelve consecutive subcarriers in the frequency domain. That is, 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.
- FIG. 4 is a diagram illustrating an example of the arrangement of physical channels and physical signals in the downlink subframe in the present embodiment.
- the horizontal axis indicates the time axis
- the vertical axis indicates the frequency axis.
- the base station device 3 includes a downlink physical channel (PBCH, PCFICH, PHICH, PDCCH, EPDCCH, PDSCH) and a downlink physical signal (synchronization signal, downlink reference) in the downlink subframe. Signal) may be transmitted.
- PBCH downlink physical channel
- PCFICH PCFICH
- PHICH PHICH
- PDCCH Physical Downlink Physical signal
- EPDCCH EPDCCH
- PDSCH downlink physical signal
- the downlink reference signal is not shown in FIG.
- a plurality of PDCCHs may be frequency and time multiplexed.
- a plurality of EPDCCHs may be frequency, time, and space multiplexed.
- 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.
- the PDSCH (may be a PDSCH symbol) used for downlink data transmission is mapped to a physical resource block allocated for transmission on the PDSCH in the downlink subframe.
- PDSCH (which may be a PDSCH symbol) used for downlink data transmission is mapped from the OFDM symbol where PDSCH mapping is started to the last OFDM symbol in the downlink subframe.
- the PDSCH includes the 4th to 14th SC-FDMA symbols (symbols 3 to 6 in the first slot and symbols 0 to 6 in the second slot) in the downlink subframe. ) Is mapped to the resource element corresponding to.
- the base station apparatus 3 may indicate the start position of the OFDM symbol to which the PDSCH is mapped.
- FIG. 5 is a diagram illustrating an example of the arrangement of physical channels and physical signals in the uplink subframe in the present embodiment.
- the horizontal axis represents the time axis and the vertical axis represents the frequency axis.
- the terminal device 1 may transmit an uplink physical channel (PUCCH, PUSCH, PRACH) and an uplink physical signal (DMRS, SRS) in the uplink subframe.
- PUCCH uplink physical channel
- PUSCH PUSCH
- PRACH uplink physical channel
- DMRS uplink physical signal
- a plurality of PUCCHs may be frequency, time, and code multiplexed.
- 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 may be transmitted using the last SC-FDMA symbol in the uplink subframe.
- the terminal device 1 cannot simultaneously transmit SRS and PUCCH / PUSCH / PRACH in a single SC-FDMA symbol of a single cell.
- the terminal apparatus 1 transmits PUSCH and / or PUCCH 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.
- the terminal device 1 can transmit both SRS and PUSCH / PUCCH.
- DMRS may be time-multiplexed with PUCCH or PUSCH.
- DMRS is not shown in FIG.
- FIG. 6 is a diagram showing an example of the arrangement of physical channels and physical signals in the special subframe in the present embodiment.
- the horizontal axis indicates the time axis
- the vertical axis indicates the frequency axis.
- DwPTS is derived from the first to tenth OFDMA symbols (OFDMA symbols 0 to 6 in the first slot and OFDMA symbols 0 to 2 in the second slot) in the special subframe.
- the GP is composed of periods corresponding to the 11th and 12th symbols (symbol 3 and symbol 4 in the second slot) in the special subframe.
- UpPTS is composed of the 13th and 14th SC-FDMA symbols (SC-FDMA symbol 5 and SC-FDMA symbol 6 in the second slot) in the special subframe.
- 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. Moreover, the base station apparatus 3 does not need to transmit PBCH in DwPTS of a special subframe. Moreover, the terminal device 1 may transmit PRACH and SRS in the UpPTS of the special subframe. That is, the terminal device 1 may not transmit PUCCH, PUSCH, and DMRS in the UpPTS of the special subframe.
- the downlink reference signal is not shown in FIG.
- the PDSCH (which may be a PDSCH symbol) used for downlink data transmission is mapped to a physical resource block allocated for transmission on the PDSCH in a special subframe.
- the PDSCH symbol used for downlink data transmission is mapped only to the DwPTS field (may be a resource element corresponding to the DwPTS field) in the special subframe.
- the PDSCH (which may be a PDSCH symbol) used for downlink data transmission is mapped from the OFDM symbol where PDSCH mapping is started to the last OFDM symbol in DwPTS in the special subframe.
- the PDSCH used for downlink data transmission is not mapped to the GP field (may be a resource element corresponding to the GP field) and the UpPTS field (may be a resource element corresponding to the UpPTS field) in the special subframe.
- the PDSCH includes the 4th to 10th SC-FDMA symbols (symbols 3 to 6 in the first slot and symbols 0 to 2 in the second slot) in the downlink subframe. ) Is mapped to the resource element corresponding to.
- the base station apparatus 3 may instruct the start position of the symbol to which the PDSCH is mapped.
- the first UL reference UL-DL configuration uplinkupreference uplink-downlink configuration
- the first DL reference UL-DL configuration downlink reference uplink-downlink configuration
- the second UL reference UL-DL configuration the second DL reference UL-DL configuration
- third UL-DL configuration uplink-downlink configuration
- the third UL-DL setting is also referred to as an explicit layer 1 signal (Explicit L1 signaling).
- the third UL-DL setting is also referred to as an explicit layer 1 setting (Explicit L1 configuration).
- a first UL reference UL-DL setting For example, a first UL reference UL-DL setting, a first DL reference UL-DL setting, a second UL reference UL-DL setting, a second DL reference UL-DL setting, and a third UL-DL
- the settings are defined by UL-DL settings (uplink-downlink configuration, UL-DL configuration).
- the UL-DL setting is a setting related to a subframe pattern in a radio frame. That is, the UL-DL setting indicates whether each of the subframes in the radio frame is a downlink subframe, an uplink subframe, or a special subframe.
- the setting is defined by a pattern of a downlink subframe, an uplink subframe, and a special subframe in the radio frame.
- the patterns of the downlink subframe, the uplink subframe, and the special subframe are the subframes # 0 to # 9, which are any of the downlink subframe, the uplink subframe, and the special subframe, respectively.
- it is expressed by an arbitrary combination having a length of D, U, and S (representing a downlink subframe, an uplink subframe, and a special subframe, respectively) 10 .
- the top that is, subframe # 0
- the second that is, subframe # 1
- FIG. 7 is a table showing an example of UL-DL settings in the present embodiment.
- D indicates a downlink subframe
- U indicates an uplink subframe
- S indicates a special subframe.
- setting the UL-DL setting i as the first or second UL reference UL-DL setting is referred to as setting the first or second UL reference UL-DL setting i.
- Setting the UL-DL setting i as the first or second DL reference UL-DL setting is referred to as setting the first or second DL reference UL-DL setting i.
- Setting the UL-DL setting i as the third UL-DL setting is referred to as setting the third UL-DL setting i.
- setting the UL-DL setting i as the UL reference UL-DL setting is referred to as setting the UL reference UL-DL setting i.
- setting the UL-DL setting i as the DL reference UL-DL setting is referred to as setting the DL reference UL-DL setting i.
- the base station apparatus 3 sets the first UL reference UL-DL setting, the first DL reference UL-DL setting, and the third UL-DL setting.
- the base station apparatus 3 uses the MIB, the system information block type 1 message, the system information message, the RRC message, the MAC CE (Control CE) as the first information (TDD-Config) indicating the first UL reference UL-DL setting. Element) and at least one of physical layer control information (for example, DCI format) may be transmitted to the terminal device 1.
- the base station apparatus 3 sets the second information indicating the first DL reference UL-DL setting as MIB, system information block type 1 message, system information message, RRC message, MAC CE (Control element), and It may be included in at least one of physical layer control information (for example, DCI format) and transmitted to the terminal device 1.
- MIB system information block type 1 message
- RRC message system information message
- MAC CE MAC CE
- the base station apparatus 3 uses the MIB, the system information block type 1 message, the system information message, the RRC message, the MAC CE (Control element), and the physical layer as the third information indicating the third UL-DL setting. It may be included in at least one of the control information (for example, DCI format) and transmitted to the terminal device 1.
- the control information for example, DCI format
- the first UL reference UL-DL setting, the second UL reference UL-DL setting, the first DL reference UL-DL setting, and the second DL reference UL-DL are set for each of the plurality of cells.
- a configuration and a third UL-DL configuration may be defined.
- the base station apparatus 3 may transmit the first information, the second information, and the third information for each cell to the terminal apparatus 1 in which a plurality of cells are set. That is, the first information, the second information, and the third information may be set for each of the cells.
- the terminal device 1 in which a plurality of cells are set has the first UL reference UL-DL configuration for each of the cells based on the first information, the second information, and the third information.
- the first DL reference UL-DL setting and the transmission direction DL-UL setting 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 1st information with respect to a secondary cell is contained in a RRC message.
- the second information for the primary cell is preferably included in the system information block type 1 message, the system information message, or the RRC message.
- the 2nd information with respect to a secondary cell is contained in a RRC message.
- the third information is preferably included in physical layer control information (for example, DCI format).
- FIG. 8 is a flowchart showing a setting method of the first UL reference UL-DL setting and the first DL reference UL-DL setting in the present embodiment.
- the terminal device 1 may execute the setting method in FIG. 8 for each of a plurality of cells.
- the terminal device 1 sets the first UL reference UL-DL setting for a certain cell based on the first information (S800). Further, the terminal device 1 determines whether or not the second information for the certain cell is received (S802). Here, when the terminal apparatus 1 receives the second information for the certain cell, the terminal apparatus 1 determines the first DL reference UL-DL based on the second information for the certain cell. Setting is set (S806). Further, when the terminal device 1 has not received the second information for the certain cell (else / otherwise), the terminal device 1 performs the first DL based on the first information for the certain cell. The reference UL-DL setting is set (S804).
- a cell in which the first UL reference UL-DL setting and the first DL reference UL-DL setting are set based on the first information is also referred to as a cell in which dynamic TDD is not set.
- a cell in which the first DL reference UL-DL setting is set based on the second information is also referred to as a cell in which dynamic TDD is set.
- the first UL reference UL-DL setting and the first DL reference UL-DL setting may not be defined. That is, when the terminal device 1 has not received the second information for a certain cell, the terminal device 1 sets one UL-DL configuration for the certain cell based on the first information for the certain cell. Also good.
- the terminal device 1 receives the second information, and determines a subframe in which uplink transmission is possible based on the second information. Next, the terminal device 1 monitors the third information. When the terminal device 1 receives the third information, the terminal device 1 determines a subframe in which uplink transmission is possible based on the third information.
- the base station apparatus 3 may transmit the third information to the terminal apparatus 1 using PDCCH / EPDCCH. That is, the third information may be used for the base station apparatus 3 (cell) to control the operation of dynamic TDD within the coverage.
- the third information may be transmitted and received in CSS and / or USS.
- the terminal device 1 tries to decode the received signal, and determines whether or not PDCCH / EPDCCH (which may be a DCI format) in which the third information is transmitted is detected.
- PDCCH / EPDCCH which may be a DCI format
- the terminal device 1 determines a subframe in which uplink transmission is possible based on the detected third information. Further, when the terminal apparatus 1 does not detect the PDCCH / EPDCCH in which the third information is transmitted, the terminal apparatus 1 may maintain the determination so far regarding a subframe in which uplink transmission is possible.
- the base station apparatus 3 and the terminal apparatus 1 have the second UL reference UL when a plurality of cells are set for the terminal apparatus 1 and the first UL reference UL-DL settings for at least two cells are different. -DL settings may be set.
- the base station apparatus 3 and the terminal apparatus 1 have a plurality of cells set for the terminal apparatus 1 and the second UL reference DL-DL setting is different unless the first UL reference UL-DL setting for at least two cells is different. It is not necessary to set the UL reference UL-DL setting.
- the first UL reference UL-DL configuration for at least two serving cells is different, the first UL reference UL-DL configuration for all (for example, two) serving cells is the same. May be included.
- the base station device 3 and the terminal device 1 do not need to set the second UL reference UL-DL setting.
- FIG. 9 is a flowchart showing a setting method of the second UL reference UL-DL setting in the present embodiment.
- FIG. 9 shows that one primary cell and one secondary cell are set for the terminal device 1.
- the terminal device 1 may execute the setting method in FIG. 9 for each of the primary cell and the secondary cell.
- the terminal device 1 determines whether the first UL reference UL-DL setting for the primary cell is different from the first UL reference UL-DL setting for the secondary cell (S900). Here, when the first UL reference UL-DL setting for the primary cell and the first UL reference UL-DL setting for the secondary cell are the same, the terminal device 1 sets the second UL reference UL-DL setting. Without completing the setting process for the second UL reference UL-DL setting.
- the terminal device 1 determines whether the serving cell is a primary cell or a secondary cell. In other serving cells, it is determined whether the PDCCH / EPDCCH with CIF (Carrier (Indicator Field) corresponding to the serving cell is set to be monitored (S902).
- CIF Carrier (Indicator Field)
- the serving cell is a secondary cell and the terminal device 1 is configured to monitor the PDCCH / EPDCCH with CIF corresponding to the serving cell (secondary cell) in another serving cell (that is, the primary cell).
- a serving cell (secondary cell) based on a pair formed by a first UL reference UL-DL configuration for another serving cell (primary cell) and a first UL reference UL-DL configuration for the serving cell (secondary cell)
- the second UL reference UL-DL configuration for is set (S904).
- the terminal device 1 sets the second UL reference UL-DL setting for the serving cell (secondary cell) based on the table of FIG.
- FIG. 10 illustrates a pair formed by a first UL reference UL-DL configuration for another serving cell (primary cell) and a first UL reference UL-DL configuration for a serving cell (secondary cell), and a secondary cell It is a figure which shows a response
- the primary cell UL-DL setting refers to the first UL reference UL-DL setting for another serving cell (primary cell).
- the secondary cell UL-DL configuration refers to the first UL reference UL-DL configuration for the serving cell (secondary cell).
- the first UL reference UL-DL setting 0 is set for another serving cell (primary cell) and the first UL reference UL-DL setting 2 is set for the serving cell (secondary cell)
- the second UL 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 terminal device 1 monitors PDCCH / EPDCCH with CIF corresponding to the serving cell (secondary cell) in another serving cell (ie, primary cell). Otherwise, the first UL reference UL-DL configuration for the serving cell is set to the second UL reference UL-DL configuration for the serving cell (S906).
- the base station apparatus 3 sets the second UL reference UL-DL setting based on the setting method shown in FIG.
- monitoring PDCCH / EPDCCH with CIF includes the meaning of trying to decode PDCCH or EPDCCH according to the DCI format including CIF.
- CIF indicates 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.
- the terminal device 1 configured to monitor the PDCCH / EPDCCH with the CIF corresponding to the serving cell in another serving cell monitors the PDCCH / EPDCCH with the CIF in the other serving cell.
- the terminal apparatus 1 configured to monitor the PDCCH / EPDCCH corresponding to the serving cell and accompanied by the CIF transmits the third information for the serving cell via the PDCCH / EPDCCH in the other serving cell. Preferably received.
- the terminal device 1 which is not set to monitor the PDCCH / EPDCCH with the CIF corresponding to the serving cell, performs the PDCCH / EPDCCH with the CIF or without the CIF in the other serving cell. You may monitor.
- the terminal device 1 that corresponds to the serving cell and is not set to monitor the PDCCH / EPDCCH with CIF transmits the third information for the serving cell in the other serving cell via the PDCCH / EPDCCH. Preferably received.
- the PDCCH / EPDCCH (which may be in a DCI format) for the primary cell is transmitted in the primary cell. That is, 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 may transmit to the terminal apparatus 1 a parameter (cif-Presence-r10) indicating whether CIF is included in the DCI format transmitted in the primary cell. Moreover, the base station apparatus 3 may transmit the parameter (CrossCarrierSchedulingConfig-r10) relevant to cross-carrier scheduling to the terminal apparatus 1 with respect to each of the secondary cells.
- a parameter cif-Presence-r10 indicating whether CIF is included in the DCI format transmitted in the primary cell.
- the base station apparatus 3 may transmit the parameter (CrossCarrierSchedulingConfig-r10) relevant to cross-carrier scheduling to the terminal apparatus 1 with respect to 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. But you can.
- 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 transmitted in the secondary cell.
- a parameter (cif-Presence-r10) indicating whether CIF is included in the DCI format may be included.
- the parameter (schedulingCellInfo-r10) indicates that the PDCCH / EPDCCH corresponding to the related secondary cell is transmitted in another serving cell
- the parameter (schedulingCellInfo-r10) is the downlink for the related secondary cell.
- a parameter (schedulingCellId) indicating in which serving cell the link assignment or uplink grant is sent may be included.
- the base station apparatus 3 and the terminal apparatus 1 have the second DL when the plurality of cells are set for the terminal apparatus 1 and the first DL reference UL-DL settings for at least two cells are different. Set the reference UL-DL setting.
- the base station apparatus 3 and the terminal apparatus 1 have a plurality of cells set for the terminal apparatus 1, and the second DL terminal UL-DL setting is different except when the first DL reference UL-DL settings for at least two cells are different.
- the DL reference UL-DL setting may not be set.
- the first DL reference UL-DL settings for all (for example, two) cells are the same except when the first DL reference UL-DL settings for at least two cells are different. May be included.
- the base station device 3 and the terminal device 1 do not need to set the second DL reference UL-DL setting.
- FIG. 11 is a flowchart showing a setting method of the second DL reference UL-DL setting in the present embodiment.
- FIG. 11 shows that one primary cell and one secondary cell are set for the terminal device 1.
- the terminal device 1 may execute the setting method in FIG. 11 for each of the primary cell and the secondary cell.
- the terminal device 1 determines whether the first DL reference UL-DL setting for the primary cell and the first DL reference UL-DL setting for the secondary cell are different (S1100). Here, when the first DL reference UL-DL setting for the primary cell and the first DL reference UL-DL setting for the secondary cell are the same, the terminal device 1 sets the second DL reference UL-DL setting. Without setting, the setting process for the second DL reference UL-DL setting is terminated.
- the terminal device 1 determines whether the serving cell is a primary cell or a secondary cell. Is determined (S1102).
- the serving cell is a secondary cell
- the first DL reference UL-DL configuration for another serving cell that is, the primary cell
- the first DL reference UL-DL configuration for the serving cell secondary cell
- the second UL reference UL-DL configuration for the serving cell is set (S1104).
- the terminal device 1 sets the second DL reference UL-DL setting for the serving cell (secondary cell) based on the table of FIG.
- FIG. 12 shows the pair formed by the first DL reference UL-DL configuration for the primary cell and the first DL reference UL-DL configuration for the secondary cell, and the second DL reference UL-DL for the secondary cell. It is a figure which shows the response
- the primary cell UL-DL configuration refers to the first DL reference UL-DL configuration for the primary cell.
- the secondary cell UL-DL configuration refers to the first DL reference UL-DL configuration for the secondary cell.
- the terminal device 1 is not set to monitor the PDCCH / EPDCCH with the CIF corresponding to the secondary cell in the primary cell, and the first DL reference UL-DL setting for the primary cell, and If the pair formed by the first DL reference UL-DL configuration for the secondary cell belongs to set 2 in FIG. 12, the second DL reference UL-DL configuration for the secondary cell is defined in set 2.
- the first DL reference UL-DL setting 0 is set for the secondary cell.
- the first DL reference UL-DL setting 0 is set for the secondary cell. 2 DL reference UL-DL setting 1 is set.
- the first DL reference UL-DL setting for the serving cell is set to the second DL reference UL-DL setting for the serving cell (primary cell) (S1106). .
- the base station apparatus 3 sets the second DL reference UL-DL setting based on the setting method shown in FIG.
- the first UL reference UL-DL configuration is used at least in order to identify a subframe in which uplink transmission is possible or impossible in a cell.
- “specify” includes at least the meanings of “determine”, “select”, and “instruct”.
- the terminal device 1 does not perform uplink transmission in a subframe indicated as a downlink subframe using the first UL reference UL-DL setting. Also, the terminal device 1 does not perform uplink transmission in the DwPTS and GP of the subframe instructed as a special subframe using the first UL reference UL-DL setting.
- the first DL reference UL-DL configuration is used at least for identifying a subframe in which downlink transmission is possible or impossible in a cell.
- the terminal device 1 does not perform downlink transmission in the subframe indicated as the uplink subframe using the first DL reference UL-DL setting. Also, the terminal device 1 does not perform downlink transmission in the UpPTS and GP of the subframe indicated as a special subframe using the first DL reference UL-DL setting.
- the terminal device 1 that has set the first DL reference UL-DL setting based on the first information uses the first UL reference UL-DL setting or the first DL reference UL-DL setting.
- measurement using a downlink signal for example, measurement related to channel state information
- the subframes indicated as uplink subframes using the first UL reference UL-DL configuration and indicated as downlink subframes using the first DL reference UL-DL configuration are designated as the first subframe. Also called a flexible subframe.
- the first flexible subframe may be a subframe reserved for uplink transmission and downlink transmission.
- a subframe indicated as a special subframe using the first UL reference UL-DL configuration and designated as a downlink subframe using the first DL reference UL-DL configuration is designated as a second flexible subframe. Also called a frame.
- the second flexible subframe may be a subframe reserved for downlink transmission. Further, the second flexible subframe may be a subframe reserved for downlink transmission in DwPTS and uplink transmission in UpPTS.
- a subframe indicated as an uplink subframe using the first UL reference UL-DL configuration and a subframe indicated as an uplink subframe using the first DL reference UL-DL configuration is designated as a fixed uplink. Also called a subframe (fixedfixuplink subframe). Reserved uplink subframe, reserved for uplink transmission.
- the base station apparatus 3 and the terminal apparatus 1 set the third UL-DL setting related to the transmission direction (up / down) in the subframe.
- the third UL-DL configuration may be used to specify the direction of transmission in the subframe.
- the third UL-DL configuration is a transmission direction in subframes designated as different subframes using the first UL reference UL-DL configuration and the first DL reference UL-DL configuration. May be used to identify
- the terminal device 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 third UL-DL setting. To do.
- the scheduling information DCI format and / or HARQ-ACK
- the third information indicating the third UL-DL setting may be information for indicating a subframe in which uplink transmission is possible. Further, the third information indicating the third UL-DL setting may be information for indicating a subframe in which downlink transmission is possible. Further, the third information indicating the third UL-DL configuration may be information for indicating a subframe in which uplink transmission in UpPTS and downlink transmission in DwPTS are possible.
- the base station apparatus 3 may perform downlink transmission scheduling in the subframe instructed as the downlink subframe using the third UL-DL setting. Also, the terminal apparatus 1 may perform downlink reception processing in a subframe instructed as a downlink subframe using the third UL-DL configuration.
- the base station apparatus 3 may perform uplink transmission scheduling in the subframe indicated as the uplink subframe using the third UL-DL setting. Also, the terminal apparatus 1 may perform uplink transmission processing in a subframe instructed as an uplink subframe using the third UL-DL configuration.
- the base station apparatus 3 may perform downlink transmission scheduling in the DwPTS of the subframe indicated as the special subframe using the third UL-DL setting. Also, the terminal device 1 may perform downlink reception processing in the DwPTS of the subframe instructed as a special subframe using the third UL-DL setting.
- the third UL-DL configuration may be used for the terminal device to instruct (notify) a downlink subframe for monitoring the PDCCH and / or EPDCCH.
- the third UL-DL configuration (third information) indicates (notifies) a downlink subframe in which the terminal apparatus measures channel state information (a downlink subframe in which channel state information can be measured). May be used to
- the first UL reference UL-DL setting and the second UL reference UL-DL setting are a subframe n in which PDCCH / EPDCCH / PHICH is arranged and a subframe in which PUSCH corresponding to the PDCCH / EPDCCH / PHICH is arranged. It may be used to specify the correspondence with n + k.
- the first UL reference UL-DL setting for the primary cell and the first UL reference UL for the secondary cell When the DL configuration is the same, in each of the two serving cells, the corresponding first UL reference UL-DL configuration corresponds to the subframe in which the PDCCH / EPDCCH / PHICH is arranged and the PDCCH / EPDCCH / PHICH It is used to specify the correspondence with the subframe in which PUSCH is arranged.
- each of the two serving cells specifies 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. 13 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 terminal device 1 specifies the value of k according to the table of FIG.
- the first UL reference UL-DL setting for the primary cell and the first UL for the secondary cell when one primary cell is set, or one primary cell and one secondary cell are set, the first UL reference UL-DL setting for the primary cell and the first UL for the secondary cell
- the first UL reference UL-DL setting is referred to as the UL reference UL-DL setting.
- the second UL reference UL-DL setting is referred to.
- the first UL reference UL-DL setting and the second UL reference UL-DL setting are simply referred to as UL-DL setting.
- the terminal apparatus 1 detects a PDCCH / EPDCCH with an uplink grant for the terminal apparatus 1 corresponding to a cell in which UL-DL settings 1 to 6 are set in the subframe n
- the terminal apparatus 1 detects PHICH with NACK for the terminal apparatus 1 corresponding to a cell in which UL-DL settings 1 to 6 are set in the subframe n, the table of FIG. In the subframe n + k specified based on the transmission, transmission on the PUSCH is performed.
- the uplink grant corresponding to the cell in which UL-DL setting 0 is set and the terminal device 1 is targeted includes a 2-bit uplink index (UL index).
- the uplink grant corresponding to the cells in which UL-DL settings 1 to 6 are set and targeting the terminal device 1 does not include an uplink index (UL index).
- the terminal device 1 When the MSB (Most Significant Bit) of the uplink index included in the uplink grant corresponding to the cell in which the UL-DL setting 0 is set is set to 1 in the subframe n, the terminal device 1 In subframe n + k specified based on Table 13, transmission is performed on PUSCH corresponding to the uplink grant (transmission on PUSCH is adjusted).
- the terminal apparatus 1 has the LSB (Least Significant Bit) of the uplink index included in the uplink grant corresponding to the cell in which the UL-DL setting 0 is set in the subframe n, set to 1. In the subframe n + 7, transmission on the PUSCH according to the uplink grant is performed.
- LSB Large Significant Bit
- the first UL reference UL-DL setting and the second UL 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. May be used to
- the first UL reference UL-DL setting for the primary cell and the first UL for the secondary cell when one primary cell is set, or one primary cell and one secondary cell are set, the first UL reference UL-DL setting for the primary cell and the first UL for the secondary cell
- the reference UL-DL configuration in each of the two serving cells, the corresponding first UL reference UL-DL configuration includes the subframe n in which the PUSCH is allocated and the PHICH corresponding to the PUSCH. Used to specify the correspondence with subframe n + k.
- the corresponding second UL reference UL-DL configuration is used to specify the correspondence between the subframe n in which the PUSCH is arranged and the subframe n + k in which the PHICH is arranged.
- FIG. 14 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 terminal device 1 specifies the value of k according to the table of FIG.
- the first UL reference UL-DL setting for the primary cell and the first UL for the secondary cell when one primary cell is set, or one primary cell and one secondary cell are set, the first UL reference UL-DL setting for the primary cell and the first UL for the secondary cell
- the first UL reference UL-DL setting is referred to as the UL reference UL-DL setting.
- the second UL reference UL-DL setting is referred to.
- the first UL reference UL-DL setting and the second UL reference UL-DL setting are simply referred to as UL-DL setting.
- the terminal device 1 specifies the PHICH resource in the subframe n + k specified from the table of FIG. 14 when transmission on the PUSCH is scheduled in the subframe n.
- the first DL reference UL-DL configuration and the second DL reference UL-DL configuration specify 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.
- the first DL reference UL-DL setting for the primary cell and the first DL reference UL for the secondary cell is a subframe n in which PDSCH is arranged and a subframe in which HARQ-ACK corresponding to the PDSCH is transmitted Used to specify the correspondence with frame n + k.
- each of the two serving cells The corresponding second DL reference UL-DL configuration is used to identify 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.
- FIG. 15 is a diagram illustrating a correspondence between the subframe nk in which the PDSCH is arranged in this embodiment and the subframe n in which the HARQ-ACK corresponding to the PDSCH is transmitted.
- the terminal device 1 specifies the value of k according to the table of FIG.
- the first DL reference UL-DL setting for the primary cell and the first DL for the secondary cell when one primary cell is set, or one primary cell and one secondary cell are set, the first DL reference UL-DL setting for the primary cell and the first DL for the secondary cell
- the first DL reference UL-DL setting is referred to as the DL reference UL-DL setting.
- the DL reference UL-DL As the setting, the second DL reference UL-DL setting is referred to.
- the first DL reference UL-DL setting and the second DL reference UL-DL setting are simply referred to as UL-DL setting.
- the terminal device 1 targets the terminal device 1 in the serving cell subframe nk (k is specified by the table of FIG. 15), and detects transmission on the PDSCH that should transmit the corresponding HARQ-ACK. In such a case, HARQ-ACK is transmitted in subframe n.
- the terminal device 1 does not perform a HARQ-ACK response to transmission on the PDSCH used for transmission of system information. Also, the terminal device 1 makes a HARQ-ACK response to the transmission on the PDSCH scheduled by the DCI format with the CRC scrambled by the C-RNTI.
- the terminal apparatus 1 transmits HARQ-ACK for the PDSCH received in the subframes n-6 and / or n-7 in the cell in which the UL-DL setting 1 is set.
- the first DL reference UL-DL setting may not be set.
- the base station apparatus 3 and the terminal apparatus 1 perform the process performed based on the first DL reference UL-DL setting described above based on the first UL reference UL-DL setting (serving cell UL-DL setting). You may do it.
- the second information for the secondary cell is not received, the second information for the primary cell is received, and the first UL reference for the secondary cell is received
- the first DL reference UL for another serving cell (primary cell) -Setting the second DL reference UL-DL configuration for the serving cell (secondary cell) based on the DL configuration and the pair formed by the first UL reference UL-DL configuration for the serving cell (secondary cell) Good.
- the second information for the primary cell is not received, the second information for the secondary cell is received, and the first information for the primary cell is received.
- the first UL for the other serving cell (primary cell) Set the second DL reference UL-DL configuration for the serving cell (secondary cell) based on the reference UL-DL configuration and the pair formed by the first DL reference UL-DL configuration for the serving cell (secondary cell) May be.
- 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 information for the primary cell is received.
- the UL reference UL-DL configuration serving cell UL-DL configuration
- the first DL reference UL-DL configuration for the secondary cell are different, the corresponding second DL reference UL-DL configuration is set in each of the two serving cells. It may be used to identify the correspondence between subframe n in which PDSCH is arranged and subframe n + k in which HARQ-ACK corresponding to the PDSCH is transmitted.
- the second information for the primary cell is not received, the second information for the secondary cell is received, and the first information for the primary cell is received.
- the corresponding first UL reference UL-DL setting (serving cell UL-DL configuration) is used to identify 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.
- the corresponding first DL The reference UL-DL configuration is the same as the one where the PDSCH is arranged. It may be used to HARQ-ACK corresponding to the frame n PDSCH to identify the correspondence between the subframe n + k to be transmitted.
- 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 information for the primary cell is received.
- the primary cell UL-DL configuration in FIG. 10 and FIG. One UL reference UL-DL configuration may be referred to.
- the second UL reference UL-DL setting and the second DL reference UL-DL setting may not be set for the serving cell in which the first DL reference UL-DL setting is set.
- the first UL reference UL-DL setting and the second UL reference UL-DL setting are collectively referred to as a UL reference UL-DL setting. Further, the first DL reference UL-DL setting and the second DL reference UL-DL setting are collectively referred to as a DL reference UL-DL setting.
- the UL reference UL-DL setting is the first UL reference UL-DL setting.
- DL setting may be used.
- the UL reference UL-DL setting is the first UL reference UL-DL setting. It may be set.
- the UL reference UL-DL setting is set to the second UL reference UL-DL setting. It may be set.
- the DL reference UL-DL setting is the first DL reference UL-DL setting. It may be set. Also, when the first DL reference UL-DL setting is set and the second DL reference UL-DL setting is set, the DL reference UL-DL setting is the first DL reference UL-DL setting. It may be set. Further, when the first DL reference UL-DL setting is set and the second DL reference UL-DL setting is set, the DL reference UL-DL setting is set to the second DL reference UL-DL setting. It may be set.
- the terminal device 1 may decode the PDSCH scheduled using the DCI format in the same subframe as the certain subframe. That is, the terminal device 1 may decode the PDSCH corresponding to the DCI format in the same subframe as the certain subframe based on the detection of the DCI format in the certain subframe.
- the terminal device 1 may decode the PDSCH assuming a certain subframe as a downlink subframe.
- the terminal device 1 decodes PDSCH on the assumption that at least the GP field and the UpPTS field are not included in the certain subframe. Good.
- the terminal apparatus 1 when assuming that a certain subframe is a downlink subframe, the terminal apparatus 1 assumes that at least the PDSCH is mapped to a physical resource block allocated for transmission on the PDSCH. May be decoded. That is, the terminal apparatus 1 transmits a PDSCH (which may be a PDSCH symbol) used for downlink data transmission in a certain subframe from the OFDM symbol where the PDSCH map is started to the last OFDM symbol.
- the PDSCH may be decoded on the assumption that it is mapped by the station apparatus 3.
- the terminal device 1 assumes that the PDSCH (which may be a PDSCH symbol) is mapped to the fourth to fourteenth resource elements in the downlink subframe. It may be decoded.
- the PDSCH which may be a PDSCH symbol
- the terminal device 1 may decode the PDSCH assuming a certain subframe as a special subframe.
- the terminal device 1 may decode the PDSCH assuming that at least the certain subframe includes the GP field and the UpPTS field. .
- the terminal apparatus 1 when assuming that a certain subframe is a special subframe, the terminal apparatus 1 assumes that at least the PDSCH is mapped to a physical resource block allocated for transmission on the PDSCH. It may be decoded.
- the terminal device 1 maps at least the PDSCH (may be a PDSCH symbol) only to the DwPTS field (may be a resource element corresponding to the DwPTS field). Assuming that, PDSCH may be decoded. That is, in the certain subframe, the terminal apparatus 1 uses the PDSCH (which may be a PDSCH symbol) used for downlink data transmission from the OFDM symbol where the PDSCH map is started to the last OFDM symbol in the DwPTS. The PDSCH may be decoded assuming that it is mapped by the base station apparatus 3.
- the terminal device 1 has at least a PDSCH (may be a PDSCH symbol), a GP field (may be a resource element corresponding to the GP field), and an UpPTS field ( The PDSCH may be decoded on the assumption that it does not map to a resource element corresponding to the UpPTS field.
- the terminal device 1 assumes that the PDSCH (which may be a PDSCH symbol) is mapped to the fourth to tenth resource elements in the downlink subframe. It may be decoded.
- the PDSCH which may be a PDSCH symbol
- the DCI format with CRC parity bits scrambled by C-RNTI, SPS C-RNTI, RA-RNTI, P-RNTI, or SI-RNTI is simply Also described as DCI format.
- the DCI format used for PDSCH scheduling may include DCI format 1A and DCI format 1C.
- DCI format 1A to which CRC parity bits scrambled by C-RNTI, SPS C-RNTI, RA-RNTI, P-RNTI, or SI-RNTI are added is simply used. Also described as DCI format 1A.
- FIG. 16 is a diagram for explaining a downlink data transmission / reception method according to this embodiment.
- FIG. 16 shows a case where UL reference UL-DL setting 0, DL reference UL-DL setting 5 and third UL-DL setting 3 are set as an example.
- subframe 6 in FIG. 16 is set as a special subframe based on the UL reference UL-DL setting, is set as a downlink frame based on the DL reference UL-DL setting, and is configured as a third UL-DL setting. Is a subframe set as a downlink subframe based on
- subframe 6 in FIG. 16 is a subframe set as a special subframe based on the UL reference UL-DL setting. Also, subframe 6 in FIG. 16 is a subframe set as a downlink subframe based on DL reference UL-DL configuration. Also, subframe 6 in FIG. 16 is a subframe set as a downlink subframe based on the third UL-DL configuration.
- the operation (processing) of the terminal device 1 in the subframe 6 in FIG. 16 will be described.
- the operation in the terminal device 1 is basically described, but it is needless to say that the base station device 3 performs an operation corresponding to the operation of the terminal device 1.
- terminal apparatus 1 determines subframe 6 as a downlink subframe or a special subframe based on which RNTI is used to scramble the CRC parity bit added to DCI format 1A. And the corresponding PDSCH may be decoded.
- the terminal apparatus 1 downloads the subframe 6 A corresponding PDSCH may be decoded assuming a link subframe.
- the terminal apparatus 1 performs the third UL-DL. Based on the setting, the subframe 6 may be assumed as a downlink subframe.
- the terminal apparatus 1 displays the subframe 6. Assuming that it is a downlink subframe, the corresponding PDSCH may be decoded.
- the terminal apparatus 1 when the PDSCH is scheduled using the DCI format 1A to which the CRC parity bit scrambled by the SPS C-RNTI is added, the terminal apparatus 1 performs the third UL- Based on the DL setting, the subframe 6 may be assumed as a downlink subframe.
- the terminal apparatus 1 assumes the subframe 6 as a downlink subframe and decodes the corresponding PDSCH. May be.
- terminal apparatus 1 downloads subframe 6 based on the third UL-DL configuration. It may be assumed as a link subframe.
- the terminal apparatus 1 assumes the subframe 6 as a special subframe and decodes the corresponding PDSCH. May be.
- the terminal apparatus 1 sets the subframe 6 to the special subframe based on the UL reference UL-DL setting. It may be assumed as a frame.
- the terminal apparatus 1 specializes the subframe 6 It may be assumed as a subframe and the corresponding PDSCH may be decoded.
- subframe 6 in FIG. 16 when PDSCH is scheduled using DCI format 1A to which CRC parity bits scrambled by RA-RNTI are added, UL terminal UL-DL setting is performed. Based on the above, the subframe 6 may be assumed as a special subframe.
- the terminal apparatus 1 specializes the subframe 6. It may be assumed as a subframe and the corresponding PDSCH may be decoded.
- subframe 6 in FIG. 16 when PDSCH is scheduled using DCI format 1A to which CRC parity bits scrambled by P-RNTI are added, UL reference UL-DL setting is performed. Based on the above, the subframe 6 may be assumed as a special subframe.
- the terminal apparatus 1 specializes the subframe 6 It may be assumed as a subframe and the corresponding PDSCH may be decoded.
- subframe 6 in FIG. 16 when PDSCH is scheduled using DCI format 1A to which CRC parity bits scrambled by SI-RNTI are added, UL reference UL-DL setting is performed. Based on the above, the subframe 6 may be assumed as a special subframe.
- FIG. 17 is another diagram for explaining a downlink data transmission / reception method according to this embodiment.
- FIG. 17 shows a case where UL reference UL-DL setting 0, DL reference UL-DL setting 5 and third UL-DL setting 2 are set as an example.
- subframe 6 in FIG. 17 is set as a special subframe based on the UL reference UL-DL setting, is set as a downlink frame based on the DL reference UL-DL setting, and is configured as a third UL-DL setting.
- subframe 6 in FIG. 17 is a subframe set as a special subframe based on the UL reference UL-DL setting. Also, subframe 6 in FIG. 17 is a subframe set as a downlink subframe based on DL reference UL-DL configuration. Also, subframe 6 in FIG. 17 is a subframe set as a special subframe based on the third UL-DL setting.
- the operation (processing) of the terminal device 1 in the subframe 6 in FIG. 17 will be described.
- the operation in the terminal device 1 is basically described, but it is needless to say that the base station device 3 performs an operation corresponding to the operation of the terminal device 1.
- terminal apparatus 1 assumes subframe 6 as a special subframe regardless of which RNTI is used to scramble the CRC parity bit added to DCI format 1A.
- PDSCH to be decoded may be decoded.
- the terminal device 1 assumes that the subframe 6 is a special subframe and decodes the corresponding PDSCH. Good.
- the terminal apparatus 1 sets the subframe 6 as a special subframe based on the UL reference UL-DL setting. It may be assumed.
- the terminal device 1 transmits the subframe 6 to the special subframe based on the third UL-DL setting. It may be assumed that
- the terminal apparatus 1 assumes the subframe 6 as a special subframe and decodes the corresponding PDSCH. May be.
- the terminal device 1 sets the subframe 6 to the special subframe based on the UL reference UL-DL setting. It may be assumed as a frame.
- the terminal device 1 sets the subframe 6 to the special frame based on the third UL-DL setting. It may be assumed as a subframe.
- the operation of the terminal device 1 in the subframe 6 in FIG. 16 and the operation of the terminal device 1 in the subframe 6 in FIG. 17 are set with the UL reference UL-DL setting and the DL reference UL-DL.
- the operation when the setting is set and the third UL-DL setting is set is shown.
- the terminal apparatus 1 that detects the DCI format in FIG. 5 may decode the corresponding PDSCH assuming that the subframe 6 is a special subframe.
- the terminal device 1 when the third UL-DL configuration is not set, the terminal device 1 that has detected the DCI format in the subframe 6 performs the sub-configuration based on the UL reference UL-DL configuration.
- Frame 6 may be assumed as a special subframe.
- the terminal device 1 that has detected the DCI format may assume the subframe 6 as a downlink subframe and decode the corresponding PDSCH.
- the terminal device 1 that has detected the DCI format in the subframe 6 determines the sub-frame based on the DL reference UL-DL configuration.
- Frame 6 may be assumed as a downlink subframe.
- the terminal device 1 that has detected the DCI format 1A to which the CRC parity bits scrambled by C-RNTI or SPS C-RNTI are added assumes the subframe 6 as a downlink subframe and decodes the corresponding PDSCH. May be.
- the terminal device 1 that has detected 1A may assume the subframe 6 as a downlink subframe based on the DL reference UL-DL configuration.
- the terminal device 1 when the third UL-DL configuration is not set, the CRC parity bits scrambled by RA-RNTI, P-RNTI, or SI-RNTI in subframe 6
- the terminal device 1 that has detected the added DCI format 1A may assume the subframe 6 as a special subframe based on the UL reference UL-DL setting.
- the terminal apparatus 1 may decode the PDSCH assuming that the subframe 6 is a special subframe with respect to the PDSCH scheduled to be semi-persistent without the PDCCH.
- the terminal apparatus 1 when the third UL-DL configuration is not set, in subframe 6, the terminal apparatus 1 performs the semi-persistently scheduled PDSCH without the PDCCH.
- the subframe 6 may be assumed as a special subframe based on the UL reference UL-DL setting.
- the terminal device 1 when the terminal device 1 has set the third UL-DL configuration (when it has a valid third UL-DL configuration), the terminal device 1 The PDSCH may be decoded based on the third UL-DL setting for transmission on the PDSCH indicated using the DCI format 1A to which the CRC parity bit scrambled by the SPS C-RNTI is added ( (It may be assumed that the PDSCH is mapped to the resource element).
- the terminal device 1 when it has set the third UL-DL configuration (when it has a valid third UL-DL configuration), the RA-RNTI, PDSCH is decoded based on the first UL-DL setting for transmission on PDSCH indicated using DCI format 1A to which CRC parity bits scrambled by P-RNTI or SI-RNTI are added. (It may be assumed that the PDSCH is mapped to the resource element).
- the terminal device 1 when the terminal device 1 sets the third UL-DL setting (when it has a valid third UL-DL setting), the terminal device 1 The PDSCH may be decoded based on the first UL-DL setting, except for transmission on the PDSCH indicated using the DCI format 1A to which the CRC parity bit scrambled by the SPS C-RNTI is added ( (It may be assumed that the PDSCH is mapped to the resource element).
- the terminal device 1 when it has set the third UL-DL configuration (when it has a valid third UL-DL configuration), the RA-RNTI, PDSCH is decoded based on the third UL-DL setting, except for transmission on PDSCH indicated using DCI format 1A with CRC parity bits scrambled by P-RNTI or SI-RNTI (It may be assumed that the PDSCH is mapped to the resource element).
- the terminal device 1 when the terminal device 1 does not set the third UL-DL setting (when it does not have a valid third UL-DL setting), the terminal device 1 The PDSCH may be decoded based on the first UL-DL setting for transmission on the PDSCH indicated using the DCI format 1A to which the CRC parity bit scrambled by the SPS C-RNTI is added ( (It may be assumed that the PDSCH is mapped to the resource element).
- the terminal device 1 when the terminal device 1 does not set the third UL-DL setting (when it does not have a valid third UL-DL setting), the terminal device 1 The PDSCH may be decoded based on the second UL-DL setting for transmission on the PDSCH indicated using the DCI format 1A to which the CRC parity bit scrambled by the SPS C-RNTI is added ( (It may be assumed that the PDSCH is mapped to the resource element).
- the terminal device 1 when the terminal device 1 does not set the third UL-DL configuration (when it does not have a valid third UL-DL configuration), the terminal device 1 PDSCH is decoded based on the first UL-DL setting for transmission on PDSCH indicated using DCI format 1A to which CRC parity bits scrambled by P-RNTI or SI-RNTI are added. (It may be assumed that the PDSCH is mapped to the resource element).
- FIG. 18 is a schematic block diagram showing the configuration of the terminal device 1 in the present embodiment.
- the terminal device 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 unit 109.
- the upper layer processing unit 101 includes a radio resource control unit 1011, a scheduling information interpretation unit 1013, and a reception control unit 1015.
- the reception unit 105 includes a decoding unit 1051, a demodulation unit 1053, a demultiplexing unit 1055, a radio reception unit 1057, and a channel measurement unit 1059.
- the transmission unit 107 includes an encoding unit 1071, a modulation unit 1073, a multiplexing unit 1075, a radio transmission unit 1077, and an uplink reference signal generation unit 1079.
- the upper layer processing unit 101 outputs uplink data (transport block) generated by a user operation or the like to the transmission unit 107.
- the upper layer processing unit 101 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a radio link control (Radio Link Control: RLC) layer, and radio resource control. Process the (Radio Resource Control: RRC) layer.
- MAC Medium Access Control
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- RRC Radio Resource Control
- the radio resource control unit 1011 included in the upper layer processing unit 101 manages various setting information / parameters of the own device.
- the radio resource control unit 1011 sets various setting information / parameters based on the upper layer signal received from the base station apparatus 3. That is, the radio resource control unit 1011 sets various setting information / parameters based on information indicating various setting information / parameters received from the base station apparatus 3. Also, the radio resource control unit 1011 generates information arranged in each uplink channel and outputs the information to the transmission unit 107.
- the radio resource control unit 1011 is also referred to as a setting unit 1011.
- the radio resource control unit 1011 has a first UL reference UL-DL setting, a second UL reference UL-DL setting, a first DL reference UL-DL setting, a second DL reference UL-DL setting, and Set the third UL-DL configuration.
- the scheduling information interpretation unit 1013 provided 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 reception control unit 1015 included in the upper layer processing unit 101 identifies the subframe based on the RNTI used for scrambling the CRC parity bits added to the DCI format, and the reception unit 105 identifies the identified subframe. Based on this, control is performed to decode the PDSCH.
- the function of the reception control unit 1015 may be included in the reception unit 105.
- the control unit 103 generates a control signal for controlling the receiving unit 105 and the transmitting unit 107 based on the control information from the 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 unit 109 according to the control signal input from the control unit 103, and the decoded information is the upper layer processing unit 101. Output to.
- the radio reception unit 1057 converts a downlink signal received via the transmission / reception antenna unit 109 into a baseband signal by orthogonal demodulation (down-conversion: down covert), removes unnecessary frequency components, and has an appropriate signal level.
- the amplification level is controlled so as to be maintained at, and 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 CP (Cyclic Prefix) from the converted digital signal, and performs a fast Fourier transform (FFT) on the signal from which the CP has been removed to obtain a frequency domain signal. Extract.
- CP Cyclic Prefix
- the demultiplexing unit 1055 separates the extracted signals into PHICH, PDCCH, EPDCCH, PDSCH, and downlink reference signals. 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.
- the demodulating unit 1053 multiplies the PHICH by a corresponding code and synthesizes the signal, demodulates the synthesized signal using a BPSK (Binary Phase Shift Shift Keying) modulation method, and outputs the demodulated signal to the decoding unit 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.
- the demodulation unit 1053 demodulates the modulation scheme notified by the downlink grant such as QPSK (Quadrature Shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM, and the like to the decoding unit 1051.
- the decoding unit 1051 performs decoding based on the information regarding the coding rate notified by the downlink control information, and outputs the decoded downlink data (transport block) to the higher layer processing unit 101.
- the channel measurement unit 1059 measures the downlink path loss and channel state from the downlink reference signal input from the demultiplexing unit 1055, and outputs the measured path loss and channel state to the upper layer processing unit 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 channel measurement unit 1059 performs channel measurement and / or interference measurement in order to calculate CQI.
- 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 unit 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 transmits the same PUSCH by using MIMO (Multiple Input Multiple Multiple Output) SM (Spatial Multiplexing).
- MIMO Multiple Input Multiple Multiple Output
- SM Spatial Multiplexing
- the uplink reference signal generation unit 1079 is a physical layer cell identifier (physical layer cell identity: PCI, Cell ID, etc.) for identifying the base station apparatus 3, a bandwidth for arranging the uplink reference signal, and an uplink grant.
- a sequence determined by a predetermined rule (formula) is generated on the basis of the cyclic shift and the parameter value for generating the DMRS sequence notified in (1).
- 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 a discrete Fourier transform (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.
- DFT discrete Fourier transform
- Radio transmission section 1077 performs inverse fast Fourier transform (Inverse Fast Fourier Transform: IFFT) on the multiplexed signal to generate an SC-FDMA symbol, adds a CP to the generated SC-FDMA symbol, and A digital signal is generated, the baseband digital signal is converted into an analog signal, an excess frequency component is removed using a low-pass filter, the signal is up-converted to a carrier frequency, and power is amplified. Output to and send.
- IFFT inverse fast Fourier transform
- FIG. 19 is a schematic block diagram showing the configuration of the base station apparatus 3 in the present embodiment.
- 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 unit 309.
- the higher layer processing unit 301 includes a radio resource control unit 3011, a scheduling unit 3013, and a transmission control unit 3015.
- the reception unit 305 includes a decoding unit 3051, a demodulation unit 3053, a demultiplexing unit 3055, a wireless reception unit 3057, and a channel measurement unit 3059.
- the transmission unit 307 includes an encoding unit 3071, a modulation unit 3073, a multiplexing unit 3075, a radio transmission unit 3077, and a downlink reference signal generation unit 3079.
- the upper layer processing unit 301 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a radio link control (Radio Link Control: RLC) layer, 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.
- MAC Medium Access Control
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- Radio Radio Resource
- 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 level. Obtained from the node and output to the transmission unit 307.
- the radio resource control unit 3011 manages various setting information / parameters of each terminal device 1.
- the radio resource control unit 3011 may set various setting information / parameters for each terminal apparatus 1 via higher layer signals. That is, the radio resource control unit 1011 transmits / broadcasts information indicating various setting information / parameters.
- the radio resource control unit 3011 is also referred to as a setting unit 3011.
- the radio resource control unit 3011 sets the first UL reference UL-DL setting, the second UL reference UL-DL setting, the first DL reference UL-DL setting, the second UL setting for each terminal device 1.
- the scheduling unit 3013 included in the upper layer processing unit 301 uses the received channel state information and the channel allocation information, the channel estimation value, the channel quality, and the like to assign the physical channel (PDSCH and PUSCH).
- the coding rate and modulation scheme and transmission power of the frame and physical channels (PDSCH and PUSCH) are determined.
- the scheduling unit 3013 Based on the scheduling result, the scheduling unit 3013 generates control information (for example, DCI format) for controlling the reception unit 305 and the transmission unit 307 and outputs the control information to the control unit 303.
- the scheduling unit 3013 further determines timing for performing transmission processing and reception processing.
- the transmission control unit 3015 included in the higher layer processing unit 301 maps the PDSCH to the resource element based on the RNTI used for scrambling the CRC parity bits added to the DCI format to the transmission unit 307, and uses the PDSCH. Control to send.
- the function of the transmission control unit 3015 may be included in the transmission unit 307.
- the control unit 303 generates a control signal for controlling the reception unit 305 and the transmission unit 307 based on the control information from the higher layer processing unit 301.
- the control unit 303 outputs the generated control signal to the reception unit 305 and the transmission unit 307 and controls the reception unit 305 and the transmission unit 307.
- the receiving unit 305 separates, demodulates, and decodes the received signal received from the terminal device 1 via the transmission / reception antenna unit 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 the uplink signal received via the transmission / reception antenna unit 309 into a baseband signal by orthogonal demodulation (down-conversion: down covert), removes unnecessary frequency components, and has a signal level of The amplification level is controlled so as to be appropriately maintained, and the quadrature demodulation is performed based on the in-phase component and the quadrature component of the received signal, and the analog signal subjected to the quadrature demodulation is converted into a digital signal.
- orthogonal demodulation down-conversion: down covert
- the wireless receiving unit 3057 removes a portion corresponding to CP (Cyclic Prefix) from the converted digital signal.
- the radio reception unit 3057 performs fast Fourier transform (FFT) on the signal from which the CP is removed, extracts a frequency domain signal, and outputs the signal to the demultiplexing unit 3055.
- FFT fast Fourier transform
- the demultiplexing unit 1055 demultiplexes the signal input from the radio receiving unit 3057 into signals such as PUCCH, PUSCH, and uplink reference signal. Note that 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 terminal 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 demodulator 3053 performs inverse discrete Fourier transform (Inverse Discrete Fourier Transform: IDFT) on the PUSCH, acquires modulation symbols, and performs BPSK (Binary Shift Keying), QPSK, 16QAM,
- IDFT inverse discrete Fourier transform
- BPSK Binary Shift Keying
- QPSK Quadrature Phase Keying
- 16QAM 16QAM
- the received signal is demodulated using a predetermined modulation scheme such as 64QAM, or the modulation method notified by the own device to each terminal device 1 in advance using an uplink grant.
- the demodulator 3053 uses the MIMO SM based on the number of spatially multiplexed sequences notified in advance to each terminal device 1 using an uplink grant and information indicating precoding performed on the sequences.
- a plurality of uplink data modulation symbols transmitted on the PUSCH are separated.
- the decoding unit 3051 encodes the demodulated PUCCH and PUSCH encoding bits in a predetermined encoding scheme, or a coding rate at which the device itself notifies the terminal device 1 in advance with an uplink grant. And the decoded uplink data and the uplink control information are output to the upper layer processing unit 101.
- 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 terminal device 1 via the transmission / reception antenna unit 309.
- the encoding unit 3071 uses a predetermined encoding method such as block encoding, convolutional encoding, and turbo encoding for the HARQ indicator, downlink control information, and downlink data input from the higher layer processing unit 301.
- the encoding is performed 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 generates a known sequence as a downlink reference signal, which is obtained by a predetermined rule based on a physical layer cell identifier (PCI) for identifying the base station apparatus 3 and the like. To do.
- 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 wireless transmission unit 3077 performs inverse fast Fourier transform (Inverse Fast Fourier Transform: IFFT) on the multiplexed modulation symbol and the like to generate an OFDM symbol, adds a CP to the generated OFDM symbol, and converts a baseband digital signal. Generate baseband digital signal into analog signal, remove excess frequency component with low-pass filter, upconvert to carrier frequency, power amplify, output to transmit / receive antenna unit 309 and transmit To do.
- IFFT inverse fast Fourier transform
- the terminal device 1 in the present embodiment sets the first UL-DL setting (UL reference UL-DL setting) and sets the second UL-DL setting (DL reference UL-DL setting).
- a control unit (radio resource control unit 1011) for setting and setting the third UL-DL configuration is provided.
- the terminal device 1 in the present embodiment is instructed as a special subframe based on the first UL-DL configuration (UL reference UL-DL configuration), and the downlink subframe based on the third UL-DL configuration.
- the downlink control information format 1A to which the CRC parity bit scrambled by C-RNTI or SPS C-RNTI is added is detected in the subframe indicated as “CR”
- the CRC scrambled by C-RNTI Reception for decoding the corresponding PDSCH assuming a downlink subframe based on the third UL-DL setting in the same subframe in which the downlink control information format 1A to which the parity bit is added is detected Unit (reception unit 105).
- the terminal device 1 in the present embodiment is instructed as a special subframe based on the first UL-DL configuration (UL reference UL-DL configuration), and the downlink subframe based on the third UL-DL configuration.
- the downlink control information format 1A to which the CRC parity bit scrambled by RA-RNTI, P-RNTI, or SI-RNTI is added is detected in the subframe indicated as RA-RNTI, P-RNTI, -In the same subframe in which the downlink control information format 1A to which the CRC parity bit scrambled by RNTI or SI-RNTI is added is detected, the first UL-DL setting (UL reference UL-DL Assuming special subframes based on Comprising receiver for decoding the response to PDSCH (the receiving unit 105).
- the receiving unit (receiving unit 105) is instructed as a special subframe based on the first UL-DL setting (UL reference UL-DL setting), and based on the third UL-DL setting,
- the corresponding PDSCH is assumed in the same subframe as the subframe in which the downlink control information format 1A is detected, assuming a special subframe. It may be decoded.
- the receiving unit designates the special subframe and the instruction based on the first UL-DL setting (UL reference UL-DL setting).
- the first UL-DL setting (UL reference UL-DL is set in the same subframe as that in which the downlink control information format 1A is detected. Based on the setting), the corresponding PDSCH may be decoded assuming a special subframe.
- the base station apparatus 3 in the present embodiment sets the first UL-DL setting (UL reference UL-DL setting), sets the second UL-DL setting (DL reference UL-DL setting), A control unit (radio resource control unit 3011) for setting the third UL-DL setting is provided.
- the base station apparatus 3 in the present embodiment indicates a special subframe based on the first UL-DL configuration (UL reference UL-DL configuration), and the downlink subframe based on the third UL-DL configuration.
- the PDSCH is scheduled using the downlink control information format 1A to which the CRC parity bit scrambled by C-RNTI or SPS C-RNTI is added in the subframe designated as a frame, C-RNTI,
- the PDSCH corresponding to the downlink control information format 1A to which the CRC parity bit scrambled by the SPS C-RNTI is added is assumed to be a downlink subframe based on the third UL-DL setting, and the resource element To the transmission unit (transmission unit 307) Equipped with a.
- the base station apparatus 3 in this embodiment indicates a special subframe based on the first UL-DL configuration (UL reference UL-DL configuration), and the downlink subframe based on the third UL-DL configuration.
- RA -PDSCH corresponding to the downlink control information format 1A to which CRC parity bits scrambled by RNTI, P-RNTI, or SI-RNTI are added is set to the first UL-DL (UL reference UL-DL setting).
- Transmitting unit that maps to over the scan element comprises a (transmission unit 307).
- the transmission unit indicates a special subframe based on the first UL-DL setting (UL reference UL-DL setting), and the special subframe based on the third UL-DL setting.
- the PDSCH is scheduled using the downlink control information format 1A in the designated subframe, the PDSCH corresponding to the downlink control information format 1A is mapped to the resource element assuming the special subframe.
- the transmission unit indicates the special subframe and the instruction based on the first UL-DL setting (UL reference UL-DL setting).
- the PDSCH when the PDSCH is scheduled using the downlink control information format 1A, the PDSCH corresponding to the downlink control information format 1A is set to the first UL-DL setting (UL reference UL-DL setting). Based on the assumption, special subframes are mapped to resource elements.
- the base station apparatus 3 and the terminal apparatus 1 perform downlink subframes that perform reception processing on the PDSCH based on which RNTI is used to scramble the CRC parity bits added to the DCI format.
- a corresponding PDSCH may be decoded assuming a frame or a special subframe. That is, the base station apparatus 3 and the terminal apparatus 1 map the PDSCH to resource elements in different methods (standards and conditions) based on which RNTI scrambles the CRC parity bits added to the DCI format. You may assume that
- the terminal apparatus 1 when the PDSCH is scheduled using the DCI format to which the CRC parity bit scrambled by RA-RNTI, P-RNTI, or SI-RNTI is added, the terminal apparatus 1 is referred to UL reference UL-DL.
- the terminal device 1 and terminal devices released in the past for example, LTE Rel.8 to LTE Rel.10. It is possible to coexist with any one of the terminal devices), and more efficient communication can be performed.
- the base station apparatus 3 and the terminal apparatus 1 assume and handle subframes that perform reception processing on the PDSCH as downlink subframes or special subframes based on whether the PDSCH is accompanied by a PDCCH.
- PDSCH may be decoded. That is, the base station apparatus 3 and the terminal apparatus 1 may assume that the PDSCH is mapped to the resource element by a different method (standard, condition) based on whether the PDSCH is accompanied by the PDCCH.
- a program that operates in the base station device 3 and the terminal device 1 related to the present invention is a program that controls a CPU (Central Processing Unit) or the like (a computer is caused to function) 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 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.
- 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.
- the “computer system” here is a computer system built in the terminal device 1 or the base station device 3 and includes hardware such as an OS and 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 or a CD-ROM, and a hard disk incorporated in a computer system.
- 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,
- a volatile memory inside a computer system that serves as a server or a client may be included 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.
- the base station device 3 in the above-described embodiment can 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.
- the terminal device 1 according to the above-described embodiment can also communicate with the base station device as an aggregate.
- the base station apparatus 3 in the above-described embodiment may be EUTRAN (Evolved Universal Terrestrial Radio Access Network).
- 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.
- a part or all of the terminal 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 terminal 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.
- the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor.
- an integrated circuit based on the technology can also be used.
- the terminal device is described as an example of the communication device.
- the present invention is not limited to this, and the stationary or non-movable electronic device installed indoors or outdoors,
- the present invention can also be applied to terminal devices or communication devices such as AV equipment, kitchen equipment, cleaning / washing equipment, air conditioning equipment, office equipment, vending machines, and other daily life equipment.
- the present invention can be applied to mobile phones, personal computers, tablet computers, and the like.
- Terminal apparatus 3 Base station apparatus 101 Upper layer processing section 103 Control section 105 Reception section 107 Transmission section 301 Upper layer processing section 303 Control section 305 Reception section 307 Transmission section 1011 Radio resource control section 1013 Scheduling information Interpretation unit 1015 Reception control unit 3011 Radio resource control unit 3013 Scheduling unit 3015 Transmission control unit
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Abstract
Description
本願は、2013年9月26日に、日本に出願された特願2013-199910号に基づき優先権を主張し、その内容をここに援用する。
・PUCCH(Physical Uplink Control Channel)
・PUSCH(Physical Uplink Shared Channel)
・PRACH(Physical Random Access Channel)
・上りリンク参照信号(Uplink Reference Signal: UL RS)
・DMRS(Demodulation Reference Signal)
・SRS(Sounding Reference Signal)
・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)
・同期信号(Synchronization signal: SS)
・下りリンク参照信号(Downlink Reference Signal: DL RS)
・CRS(Cell-specific Reference Signal)
・PDSCHに関連するURS(UE-specific Reference Signal)
・EPDCCHに関連するDMRS(Demodulation Reference Signal)
・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)
・下りリンクサブフレーム(第1のサブフレーム)
・上りリンクサブフレーム(第2のサブフレーム)
・スペシャルサブフレーム(第3のサブフレーム)
3 基地局装置
101 上位層処理部
103 制御部
105 受信部
107 送信部
301 上位層処理部
303 制御部
305 受信部
307 送信部
1011 無線リソース制御部
1013 スケジューリング情報解釈部
1015 受信制御部
3011 無線リソース制御部
3013 スケジューリング部
3015 送信制御部
Claims (6)
- 基地局装置と通信する端末装置において、
第1の情報、第2の情報を受信し、
第3の情報を物理下りリンク制御チャネルで受信し、
前記物理下りリンク制御チャネルを検出した場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示され、前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームと指示されたサブフレーム(n1-k1)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを検出したならば、前記サブフレーム(n1-k1)において前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームを想定して、対応する物理下りリンク共用チャネルを検出し、
前記物理下りリンク制御チャネルを検出していない場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示されたサブフレーム(n2-k2)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを検出したならば、前記サブフレーム(n2-k2)において前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームを想定して、対応する物理下りリンク共用チャネルを検出する受信部と、
前記サブフレーム(n1-k1)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n1)において送信し、
前記サブフレーム(n2-k2)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n2)において送信する送信部と、を備え、
前記k1、および、前記k2は、前記第2の情報によって与えられるUL-DL設定に基づく
端末装置。 - 端末装置と通信する基地局装置において、
第1の情報、第2の情報を送信し、
第3の情報を物理下りリンク制御チャネルで送信し、
前記物理下りリンク制御チャネルでの送信を行なった場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示し、前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームと指示したサブフレーム(n1-k1)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを送信したならば、前記サブフレーム(n1-k1)において前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームを想定して、対応する物理下りリンク共用チャネルでの送信を行ない、
前記物理下りリンク制御チャネルでの送信を行なっていない場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示したサブフレーム(n2-k2)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを送信したならば、前記サブフレーム(n2-k2)において前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームを想定して、対応する物理下りリンク共用チャネルでの送信を行なう送信部と、
前記サブフレーム(n1-k1)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n1)において受信し、
前記サブフレーム(n2-k2)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n2)において受信する受信部と、を備え、
前記k1、および、前記k2は、前記第2の情報によって与えられるUL-DL設定に基づく
基地局装置。 - 基地局装置と通信する端末装置に搭載される集積回路において、
第1の情報、第2の情報を受信し、
第3の情報を物理下りリンク制御チャネルで受信し、
前記物理下りリンク制御チャネルを検出した場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示され、前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームと指示されたサブフレーム(n1-k1)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを検出したならば、前記サブフレーム(n1-k1)において前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームを想定して、対応する物理下りリンク共用チャネルを検出し、
前記物理下りリンク制御チャネルを検出していない場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示されたサブフレーム(n2-k2)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを検出したならば、前記サブフレーム(n2-k2)において前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームを想定して、対応する物理下りリンク共用チャネルを検出する機能と、
前記サブフレーム(n1-k1)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n1)において送信し、
前記サブフレーム(n2-k2)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n2)において送信する機能と、を前記端末装置に発揮させ、
前記k1、および、前記k2は、前記第2の情報によって与えられるUL-DL設定に基づく
集積回路。 - 端末装置と通信する基地局装置に搭載される集積回路おいて、
第1の情報、第2の情報を送信し、
第3の情報を物理下りリンク制御チャネルで送信し、
前記物理下りリンク制御チャネルでの送信を行なっていない場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示し、前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームと指示したサブフレーム(n1-k1)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを送信したならば、前記サブフレーム(n1-k1)において前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームを想定して、対応する物理下りリンク共用チャネルでの送信を行ない、
前記物理下りリンク制御チャネルでの送信を行なった場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示したサブフレーム(n2-k2)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを送信したならば、前記サブフレーム(n2-k2)において前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームを想定して、対応する物理下りリンク共用チャネルでの送信を行なう機能と、
前記サブフレーム(n1-k1)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n1)において受信し、
前記サブフレーム(n2-k2)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n2)において受信する機能と、を前記基地局装置に発揮させ、
前記k1、および、前記k2は、前記第2の情報によって与えられるUL-DL設定に基づく
集積回路。 - 基地局装置と通信する端末装置の通信方法において、
第1の情報、第2の情報を受信し、
第3の情報を物理下りリンク制御チャネルで受信し、
前記物理下りリンク制御チャネルを検出した場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示され、前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームと指示されたサブフレーム(n1-k1)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを検出したならば、前記サブフレーム(n1-k1)において前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームを想定して、対応する物理下りリンク共用チャネルを検出し、
前記物理下りリンク制御チャネルを検出していない場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示されたサブフレーム(n2-k2)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを検出したならば、前記サブフレーム(n2-k2)において前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームを想定して、対応する物理下りリンク共用チャネルを検出し、
前記サブフレーム(n1-k1)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n1)において送信し、
前記サブフレーム(n2-k2)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n2)において送信し、
前記k1、および、前記k2は、前記第2の情報によって与えられるUL-DL設定に基づく
通信方法。 - 端末装置と通信する基地局装置の通信方法において、
第1の情報、第2の情報を送信し、
第3の情報を物理下りリンク制御チャネルで送信し、
前記物理下りリンク制御チャネルでの送信を行なっていない場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示し、前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームと指示したサブフレーム(n1-k1)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを送信したならば、前記サブフレーム(n1-k1)において前記第3の情報によって与えられるUL-DL設定に基づいて下りリンクサブフレームを想定して、対応する物理下りリンク共用チャネルでの送信を行ない、
前記物理下りリンク制御チャネルでの送信を行なった場合に、
前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームと指示したサブフレーム(n2-k2)においてC-RNTIによってスクランブルされたCRCパリティビットが付加された下りリンク制御情報フォーマット1Aを送信したならば、前記サブフレーム(n2-k2)において前記第1の情報によって与えられるUL-DL設定に基づいてスペシャルサブフレームを想定して、対応する物理下りリンク共用チャネルでの送信を行ない、
前記サブフレーム(n1-k1)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n1)において受信し、
前記サブフレーム(n2-k2)において検出した物理下りリンク共用チャネルに対するHARQ-ACKを、サブフレーム(n2)において受信し、
前記k1、および、前記k2は、前記第2の情報によって与えられるUL-DL設定に基づく
通信方法。
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JP2019522440A (ja) * | 2016-08-11 | 2019-08-08 | 中国移動通信有限公司研究院China Mobile Communication Co., Ltd Research Institute | メッセージ伝送方法、ユーザー装置、基地局及びコンピュータ記憶媒体 |
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