WO2016163464A1 - 端末装置、基地局装置、通信方法、および、集積回路 - Google Patents
端末装置、基地局装置、通信方法、および、集積回路 Download PDFInfo
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- WO2016163464A1 WO2016163464A1 PCT/JP2016/061417 JP2016061417W WO2016163464A1 WO 2016163464 A1 WO2016163464 A1 WO 2016163464A1 JP 2016061417 W JP2016061417 W JP 2016061417W WO 2016163464 A1 WO2016163464 A1 WO 2016163464A1
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- downlink control
- control channel
- physical downlink
- primary cell
- physical
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
- H04L45/021—Ensuring consistency of routing table updates, e.g. by using epoch numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/622—Queue service order
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
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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 signalling, i.e. of overhead other than pilot signals
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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
Definitions
- the present invention relates to a terminal device, a base station device, a communication method, and an integrated circuit.
- 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.
- LTE corresponds to Frequency Division Duplex (FDD).
- FDD Frequency Division Duplex
- 3GPP specifies carrier aggregation that allows a terminal device to simultaneously transmit and / or receive in up to five serving cells (component carriers).
- Non-Patent Document 1 it has been studied that a terminal device simultaneously performs transmission and / or reception in a serving cell (component carrier) that exceeds five (Non-Patent Document 1). In addition, it has been studied that a terminal apparatus transmits a physical uplink control channel in a secondary cell that is a serving cell other than the primary cell (Non-Patent Document 1).
- Some aspects of the present invention have been made in view of the above points, and an object thereof is a terminal device capable of efficiently transmitting downlink control information, an integrated circuit mounted on the terminal device, It is an object of the present invention to provide a communication method used for the terminal device, a base station device, an integrated circuit mounted on the base station device, and a communication method used for the base station device.
- the terminal device includes a first physical downlink control channel including first downlink control information used to allocate resources corresponding to a plurality of physical downlink shared channels, or 1 A receiving unit for decoding, in a primary cell, a second physical downlink control channel including second downlink control information used for allocating resources corresponding to two physical downlink shared channels,
- the downlink control channel and the second physical downlink control channel include CRC parity bits scrambled by C-RNTI, and downlink control information used to control semi-persistent scheduling in the downlink.
- Including third physical downlink control Search space Yaneru is decoded is based on the first physical downlink control channel whether it is set to decode the primary cell.
- the first physical downlink control channel when the first physical downlink control channel is set to be decoded in a primary cell, downlink control information used for controlling semi-persistent scheduling in the downlink
- the search space in which the third physical downlink control channel including is decoded may be a common search space in the primary cell.
- downlink control information used for controlling semi-persistent scheduling in the downlink when the first physical downlink control channel is not set to be decoded in a primary cell may be CSS (Common Search Space) in the primary cell and USS (UE-specific Search Space) in the primary cell.
- a base station apparatus is a base station apparatus that communicates with a terminal apparatus, and first downlink control information used for allocating resources corresponding to a plurality of physical downlink shared channels.
- the search space in which the third physical downlink control channel including the uplink control information is transmitted is based on whether or not the terminal device is set to decode the first physical downlink control channel in the primary cell. .
- a communication method is a communication method used for a terminal device, and includes first downlink control information used for allocating resources corresponding to a plurality of physical downlink shared channels.
- the first physical downlink control channel and the second physical downlink control channel include CRC parity bits scrambled by C-RNTI to control semi-persistent scheduling in the downlink
- Including downlink control information used for Search space of the physical downlink control channel is decoded is based on the first physical downlink control channel whether it is set to decode the primary cell.
- a communication method is a communication method used in a base station device that communicates with a terminal device, and is a first method used to allocate resources corresponding to a plurality of physical downlink shared channels.
- a channel is transmitted to the terminal device in a primary cell, the first physical downlink control channel and the second physical downlink control channel include CRC parity bits scrambled by C-RNTI, and Used to control semi-persistent scheduling in links Whether or not the search space in which the third physical downlink control channel including the downlink control information is transmitted is set so that the terminal apparatus decodes the first physical downlink control channel in the primary cell. Based.
- An integrated circuit is an integrated circuit mounted on a terminal device, and includes first downlink control information used for allocating resources corresponding to a plurality of physical downlink shared channels. Including a first physical downlink control channel including the second physical downlink control channel including second downlink control information used for allocating resources corresponding to one physical downlink shared channel
- the first physical downlink control channel and the second physical downlink control channel are CRC parity bits scrambled by C-RNTI. Control semi-persistent scheduling in the downlink Whether the search space in which the third physical downlink control channel including downlink control information used for decoding is decoded is set to decode the first physical downlink control channel in the primary cell. Based.
- An integrated circuit is an integrated circuit mounted on a base station device that communicates with a terminal device, and is used to allocate resources corresponding to a plurality of physical downlink shared channels.
- Second physical downlink including second downlink control information used for allocating resources corresponding to a first physical downlink control channel including one downlink control information or a physical downlink shared channel The base station apparatus exhibits a series of functions including a function of transmitting a control channel to the terminal apparatus in a primary cell, and the first physical downlink control channel and the second physical downlink control channel are , Including CRC parity bits scrambled by C-RNTI,
- the terminal apparatus decodes the first physical downlink control channel in a primary cell. Based on whether or not it is set.
- downlink control information can be efficiently executed.
- FIG. 1 is a conceptual diagram of the wireless communication system of the present embodiment.
- the radio communication system includes terminal apparatuses 1A to 1C and a base station apparatus 3.
- the terminal devices 1A to 1C are referred to as the terminal device 1.
- the terminal device 1 is set with a plurality of serving cells.
- a technique in which the terminal device 1 communicates via a plurality of serving cells is referred to as cell aggregation or carrier aggregation.
- the present invention may be applied to each of a plurality of serving cells set for the terminal device 1.
- the present invention may be applied to some of the set serving cells.
- the present invention may be applied to each of a plurality of set serving cell groups. Further, the present invention may be applied to a part of the set groups of a plurality of serving cells.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- TDD may be applied to all of a plurality of serving cells.
- a serving cell to which TDD is applied and a serving cell to which FDD is applied may be aggregated.
- the set plurality of serving cells include one primary cell and one or more secondary cells.
- the primary cell is a serving cell in which an initial connection establishment (initial connection establishment) procedure has been performed, a serving cell that has initiated a connection re-establishment procedure, or a cell designated as a primary cell in a handover procedure.
- a secondary cell may be set when an RRC (Radio Resource Control) connection is established or later.
- a carrier corresponding to a serving cell is referred to as a downlink component carrier.
- a carrier corresponding to a serving cell is referred to as an uplink component carrier.
- the downlink component carrier and the uplink component carrier are collectively referred to as a component carrier.
- the terminal device 1 can perform transmission and / or reception on a plurality of physical channels simultaneously in a plurality of serving cells (component carriers).
- One physical channel is transmitted in one serving cell (component carrier) among a plurality of serving cells (component carriers).
- a secondary cell used for transmission of PUCCH is referred to as a special secondary cell and a PUCCH secondary cell.
- secondary cells that are not used for PUCCH transmission are referred to as non-special secondary cells, non-PUCCH secondary cells, non-PUCCH serving cells, and non-PUCCH cells.
- the primary cell and the special secondary cell are collectively referred to as a PUCCH serving cell and a PUCCH cell.
- the PUCCH serving cell (primary cell, PUCCH secondary cell) has a downlink component carrier and an uplink component carrier.
- PUCCH serving cell primary cell, PUCCH secondary cell
- PUCCH resources are configured.
- a non-PUCCH serving cell may have only downlink component carriers.
- a non-PUCCH serving cell may have a downlink component carrier and an uplink component carrier.
- the terminal device 1 performs transmission on the PUCCH in the PUCCH serving cell.
- the terminal device 1 performs transmission on the PUCCH in the primary cell.
- the terminal device 1 performs transmission on the PUCCH in the special secondary cell.
- the terminal device 1 does not perform transmission on the PUCCH in the non-special secondary cell.
- the special secondary cell may be defined as a primary cell and a serving cell that is not a secondary cell.
- 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
- 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, Medium Access Control Protocol Data Unit: MAC HARQ-ACK (Hybrid Automatic Repeat Request ACKnowledgement) for PDU, Downlink-Shared Channel: DL-SCH, Physical Downlink Shared Channel: PDSCH).
- HARQ-ACK indicates ACK (acknowledgement) or NACK (negative-acknowledgement).
- HARQ-ACK is also referred to as ACK / NACK, HARQ feedback, HARQ response, HARQ information, or HARQ control information.
- the PUSCH is used to transmit uplink data (Uplink-Shared Channel: UL-SCH).
- the PUSCH may also be used to transmit HARQ-ACK and / or channel state information along with uplink data. Also, the PUSCH may be used to transmit only channel state information or only HARQ-ACK and channel state information.
- 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 apparatus 3 uses DMRS to perform propagation channel correction for PUSCH or PUCCH.
- transmitting both PUSCH and DMRS is simply referred to as transmitting PUSCH.
- transmitting both PUCCH and DMRS is simply referred to as transmitting PUCCH.
- SRS is not related to PUSCH or PUCCH transmission.
- the base station apparatus 3 uses SRS to measure the uplink channel state.
- the 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
- 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
- the PDCCH and EPDCCH are used to transmit downlink control information (Downlink Control Information: DCI).
- DCI Downlink Control Information
- the downlink control information is also referred to as a DCI format.
- the downlink control information includes a downlink grant (downlink grant) and an uplink grant (uplink grant).
- the downlink grant is also referred to as downlink assignment (downlink allocation) or downlink assignment (downlink allocation).
- the downlink grant is used for scheduling a single PDSCH within a single cell.
- the downlink grant may be used for scheduling a plurality of PDSCHs in a plurality of cells.
- the downlink grant is used for scheduling the PDSCH in the same subframe as the subframe in which the downlink grant is transmitted.
- the downlink grant includes DCI formats 1A, 2, 2A, 2B, 2C, and 2D.
- the terminal device 1 may decode any of the DCI formats 2, 2A, 2B, 2C, and 2D based on the transmission mode for the downlink set by the higher layer.
- the terminal device 1 may decode the DCI format 1A regardless of the transmission mode set by the upper layer.
- the uplink grant is used for scheduling a single PUSCH within a single cell.
- the uplink grant may be used for scheduling a plurality of PUSCHs in a plurality of cells.
- the uplink grant is used for scheduling a single PUSCH in a subframe that is four or more after the subframe in which the uplink grant is transmitted.
- the uplink grant includes a TPC command for PUSCH.
- the uplink grant includes DCI format 0.
- the CRC parity bit added to the downlink grant or the uplink grant is scrambled by the RNTI.
- a CRC (Cyclic Redundancy Check) parity bit is added to the downlink grant or the uplink grant, and after the CRC parity bit is added, the CRC parity bit is scrambled by the RNTI.
- the CRC parity bit added to the downlink grant or the uplink grant 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).
- 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.
- Semi-persistent scheduling includes downlink semi-persistent scheduling and uplink semi-persistent scheduling. Semi-persistent scheduling is supported only in the primary cell. That is, semi-persistent scheduling is not set for the secondary cell.
- Semi-persistent scheduling is controlled based on at least a DCI format and an RRC (Radio Resource Control) information element.
- RRC Radio Resource Control
- Downlink semi-persistent scheduling is activated / released / controlled by DCI format 1A to which CRC parity bits scrambled by SPS C-RNTI are added.
- the DCI format 1A to which the CRC parity bit scrambled by the SPS C-RNTI is added is transmitted in the primary cell.
- Uplink semi-persistent scheduling is activated / released / controlled by DCI format 0 to which CRC parity bits scrambled by SPS C-RNTI are added.
- the DCI format 0 with the CRC parity bit scrambled by the SPS C-RNTI is transmitted in the primary cell.
- the terminal device 1 If the terminal device 1 is set to decode the PDCCH with CRC parity bits scrambled by the SPS C-RNTI by the higher layer, the terminal device 1 will use the SPS C-RNTI with DCI format 0 or DCI format 1 The PDCCH with scrambled CRC parity bits is decoded in the primary cell.
- 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.
- Temporary C-RNTI includes Temporary C-RNTI.
- Temporary C-RNTI is an identifier used for a random access procedure.
- Temporary C-RNTI can be applied in a non-contention based random access procedure.
- Temporary C-RNTI is applicable when a valid C-RNTI is not available.
- the terminal device 1 performs reception on the PDSCH based on the detection of the PDCCH with the CRC scrambled by the Temporary C-RNTI.
- PDSCH is used to transmit downlink data (Downlink Shared Channel: DL-SCH).
- DL-SCH is a transport channel. That is, DL-SCH transmitted using PDSCH is a transport channel related to PDCCH and / or RNTI.
- 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 the 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.
- the downlink reference signal is used for the terminal device 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
- 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.
- a group of a plurality of serving cells is referred to as a PUCCH cell group.
- a certain serving cell belongs to any one PUCCH cell group.
- One PUCCH cell group includes one PUCCH serving cell.
- One PUCCH cell group may include only one PUCCH serving cell.
- One PUCCH cell group may include one PUCCH serving cell and one or more non-PUCCH serving cells.
- a PUCCH cell group including a primary cell is referred to as a primary PUCCH cell group.
- a PUCCH cell group that does not include a primary cell is referred to as a secondary PUCCH cell group. That is, the secondary PUCCH cell group includes a PUCCH secondary cell.
- An index (cell group index) for identifying the PUCCH cell group may be defined.
- the index for the primary PUCCH cell group is always 0.
- the index for the secondary PUCCH cell group may be set by the network device (base station device 3).
- the PUCCH of the PUCCH serving cell is used to transmit uplink control information (HARQ-ACK and / or CSI) for serving cells (PUCCH serving cell, non-PUCCH serving cell) included in the PUCCH cell group to which the PUCCH serving cell belongs.
- HARQ-ACK and / or CSI uplink control information
- uplink control information (HARQ-ACK and / or CSI) for a serving cell (PUCCH serving cell, non-PUCCH serving cell) included in the PUCCH cell group is transmitted using the PUCCH in the PUCCH serving cell included in the PUCCH cell group. Is done.
- This embodiment may be applied only to HARQ-ACK. This embodiment may be applied only to CSI. This embodiment may be applied to HARQ-ACK and CSI.
- the PUCCH cell group for HARQ-ACK and the PUCCH cell group for CSI may be individually defined.
- the PUCCH cell group for HARQ-ACK and the PUCCH cell group for CSI may be common.
- FIG. 2 is a diagram illustrating a schematic configuration of a radio frame according to the present embodiment.
- Each radio frame is 10 ms long.
- the horizontal axis is a time axis.
- Each radio frame is composed of two half frames.
- Each half frame is 5 ms long.
- Each half frame is composed of 5 subframes.
- Each subframe is 1 ms long and is defined by two consecutive slots.
- Each of the slots is 0.5 ms long.
- the i-th subframe in the radio frame is composed of a (2 ⁇ i) th slot and a (2 ⁇ i + 1) th slot. That is, 10 subframes can be used in each 10 ms interval.
- a single radio frame is composed of at least a downlink subframe, an uplink subframe, and a special subframe.
- the downlink subframe is a subframe reserved for downlink transmission.
- the uplink subframe is a subframe reserved for uplink transmission.
- the special subframe is composed of three fields. The three fields are DwPTS (Downlink Pilot Time Slot), GP (Guard Period), and UpPTS (Uplink Pilot Time Slot). The total length of DwPTS, GP, and UpPTS is 1 ms.
- DwPTS is a field reserved for downlink transmission.
- UpPTS is a field reserved for uplink transmission.
- GP is a field in which downlink transmission and uplink transmission are not performed. Note that the special subframe may be composed of only DwPTS and GP, or may be composed of only GP and UpPTS.
- FIG. 3 is a diagram showing the configuration of the slot according to the present embodiment.
- normal CP normal Cyclic Prefix
- An extended CP extendedexCyclic Prefix
- the physical signal or physical channel transmitted in each of the slots is represented by a resource grid.
- the horizontal axis is a time axis
- the vertical axis is a frequency axis.
- 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.
- the number of OFDM symbols or SC-FDMA symbols constituting one slot is seven.
- Each element in the resource grid is referred to as a resource element.
- the resource element is identified using a subcarrier number and an OFDM symbol or SC-FDMA symbol number.
- the resource block is used to express mapping of a certain physical channel (such as PDSCH or PUSCH) to a resource element.
- resource blocks virtual resource blocks and physical resource blocks are defined.
- a physical channel is first mapped to a virtual resource block. Thereafter, the virtual resource block is mapped to the physical resource block.
- One physical resource block is defined by 7 consecutive OFDM symbols or SC-FDMA symbols in the time domain and 12 consecutive subcarriers in the frequency domain. Therefore, one physical resource block is composed of (7 ⁇ 12) resource elements.
- One physical resource block corresponds to one slot in the time domain and corresponds to 180 kHz in the frequency domain. Physical resource blocks are numbered from 0 in the frequency domain.
- FIG. 4 is a diagram illustrating an example of the arrangement of physical channels and physical signals in the downlink subframe according to the present embodiment.
- the horizontal axis is a time axis
- the vertical axis is a frequency axis.
- the base station apparatus 3 may transmit a downlink physical channel (PBCH, PCFICH, PHICH, PDCCH, EPDCCH, PDSCH) and a downlink physical signal (synchronization signal, downlink reference signal) in the downlink subframe.
- PBCH is transmitted only in subframe 0 in the radio frame.
- the downlink reference signal is arranged in resource elements distributed in the frequency domain and the time domain. For simplicity of explanation, the downlink reference signal is not shown in FIG.
- 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.
- FIG. 5 is a diagram illustrating an example of the arrangement of physical channels and physical signals in the uplink subframe according to the present embodiment.
- the horizontal axis is the time axis
- the vertical axis is 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 region a plurality of PUCCHs are 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.
- SRS is transmitted using the last SC-FDMA symbol in the uplink subframe. That is, the SRS is arranged in the last SC-FDMA symbol in the uplink subframe.
- the 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. That is, the terminal device 1 can transmit both SRS and PUSCH / PUCCH in a single uplink subframe of a single cell.
- DMRS is time-multiplexed with PUCCH or PUSCH. For simplicity of explanation, 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 of the present embodiment.
- the horizontal axis is the time axis
- the vertical axis is the frequency axis.
- DwPTS is composed of the first to tenth SC-FDMA symbols in the special subframe
- GP is composed of the eleventh and twelfth SC-FDMA symbols in the special subframe
- UpPTS is the special subframe. It consists of the 13th and 14th SC-FDMA symbols in the frame.
- the base station apparatus 3 may transmit the PCFICH, PHICH, PDCCH, EPDCCH, PDSCH, synchronization signal, and downlink reference signal in the DwPTS of the special subframe.
- Base station apparatus 3 does not transmit PBCH in DwPTS of the special subframe.
- the terminal device 1 may transmit PRACH and SRS in the UpPTS of the special subframe. That is, the terminal device 1 does not transmit PUCCH, PUSCH, and DMRS in the UpPTS of the special subframe.
- FIG. 7 is a diagram when the number of downlink cells larger than 5 in the present embodiment is set in the terminal device 1.
- carrier aggregation of up to 32 downlink component carriers may be supported. That is, the base station device 3 and the terminal device 1 can simultaneously perform transmission and / or reception on a plurality of physical channels in up to 32 serving cells.
- the number of uplink component carriers may be smaller than the number of downlink component carriers.
- the terminal device 1 is downlinked at the RRC layer by a parameter (for example, SCellToAddMod-r13) indicating a component carrier to be set and a list of component carriers to be set (eg, sCellToAddModList-r13).
- the component carrier is set.
- An index (for example, SCellIndex-r13) of a cell that can be monitored may be set.
- SCellIndex-r13 may be set.
- FIG. 8 shows an example in which a downlink cell of PDSCH that can be simultaneously received by the terminal device is set.
- the serving cell is a primary cell or the serving cell is a secondary cell, and the terminal device 1 is set to monitor the PDCCH / EPDCCH with CIF corresponding to the serving cell (secondary cell) in another serving cell (primary cell). If not, the PDSCH of the serving cell is received via PDCCH / EPDCCH.
- Monitoring PDCCH / EPDCCH with CIF means trying to decode PDCCH or EPDCCH according to the DCI format including CIF.
- CIF is a field to which a carrier indicator is mapped. The value of the carrier indicator indicates the serving cell corresponding to the DCI format to which the carrier indicator relates.
- the terminal device 1 configured to monitor the PDCCH / EPDCCH with CIF corresponding to the serving cell monitors the PDCCH / EPDCCH with CIF in the other serving cell.
- the terminal device 1 configured to monitor the PDCCH / EPDCCH with the CIF corresponding to the serving cell may receive the PDSCH for the serving cell via the PDCCH / EPDCCH in the other serving cell. preferable.
- the terminal device 1 that is not set to monitor the PDCCH / EPDCCH with the CIF corresponding to the serving cell monitors the PDCCH / EPDCCH with the CIF or without the CIF in the serving cell.
- the terminal device 1 corresponding to the serving cell and not configured to monitor the PDCCH / EPDCCH with the CIF receives third information for the serving cell via the PDCCH / EPDCCH in the serving cell. Is preferred.
- the PDCCH / EPDCCH for the primary cell is transmitted in the primary cell. It is preferable that the 3rd information with respect to a primary cell is transmitted via PDCCH / EPDCCH of a primary cell.
- the base station apparatus 3 transmits to the terminal apparatus 1 a parameter (for example, cif-Presence) indicating whether or not CIF is included in the DCI format transmitted in the primary cell.
- a parameter for example, cif-Presence
- the base station apparatus 3 transmits a parameter related to cross carrier scheduling (for example, CrossCarrierSchedulingConfig-r13) to the terminal apparatus 1 for each of the secondary cells.
- a parameter related to cross carrier scheduling for example, CrossCarrierSchedulingConfig-r13
- the parameter (for example, CrossCarrierSchedulingConfig-r13) is a parameter (for example, schedulingCellInfo-r13) that indicates whether the PDCCH / EPDCCH corresponding to the associated secondary cell is transmitted in the secondary cell or another serving cell. Including.
- a parameter eg, schedulingCellInfo-r13
- the parameter eg, schedulingCellInfo-r13
- a parameter for example, cif-Presence indicating whether CIF is included in the DCI format to be included is included.
- the parameter indicates that the PDCCH / EPDCCH corresponding to the associated secondary cell is transmitted in another serving cell
- the parameter (eg, schedulingCellInfo-r13) is related to the associated secondary cell. Including a parameter (for example, schedulingCellId) indicating in which serving cell the downlink assignment for is sent.
- FIG. 9 shows an example in which downlink cells that can be activated simultaneously are set as another embodiment of the present invention.
- the downlink component carrier is set in the RRC layer for the terminal device 1 based on the parameter indicating the component carrier to be set (for example, SCellToAddMod-r13) and the list of component carriers to be set (for example, sCellToAddModList-r13). Is done.
- the number of downlink cells that can be activated simultaneously may be set for the terminal device 1 by using a parameter that sets the number of downlink cells that can be activated simultaneously.
- the terminal device 1 uses the information used to indicate to the base station device 3 the number of downlink cells that can be activated simultaneously (the number of downlink component carriers). , Information on capability) may be transferred / transmitted. That is, the terminal device 1 may transmit information used to indicate the number of downlink component carriers that can be activated at the same time in the information related to the capability.
- the primary cell and / or the PUCCH secondary cell may always be activated.
- the terminal device 1 that supports activation of up to five downlink component carriers including the primary cell may use 4 or 5 as information used to indicate the number of downlink component carriers that can be activated simultaneously.
- the information used to indicate may be transmitted.
- the terminal device 1 uses the information used to indicate to the base station device 3 the number of uplink cells that can be activated simultaneously (the number of uplink component carriers). , Information on capability) may be transferred / transmitted. That is, the terminal device 1 may transmit information used to indicate the number of uplink component carriers that can be activated at the same time, in the information related to the capability.
- the terminal device 1 may transmit information used to indicate the number of PDCCHs that can be simultaneously received (monitored and detectable) in a certain subframe in the information on the capability.
- the terminal device 1 may transmit information used for indicating the number of PDSCHs that can be simultaneously received in a certain subframe in the information related to the capability.
- the terminal device 1 indicates information indicating a combination of physical channels that can be simultaneously received in the downlink in a certain subframe (the same subframe) (the “possible” combinations ”of” physical ”channels” that ”can” be ”received” in ”the“ downlink ”in” the ”same” subframe). May be sent.
- the physical channel may include the PDCCH.
- the physical channel may include EPDCCH.
- the physical channel may include PDSCH.
- the physical channel may include PBCH.
- the physical channel may include PMCH.
- the terminal device 1 may transmit information used to indicate the number of PDCCHs and / or the number of PDSCHs that can be simultaneously received in a certain subframe for each monitored RNTI. For example, the terminal device 1 indicates the number of PDCCHs to which a CRC scrambled by SI-RNTI can be simultaneously received in a certain subframe and / or the number of PDSCHs scheduled by using the PDCCH. Information used for the purpose may be transmitted.
- the number of PDCCHs to which CRC scrambled by SI-RNTI is added may be one.
- the number of PDSCHs scheduled by using the PDCCH may be one.
- the terminal device 1 indicates the number of PDCCHs to which CRCs scrambled by RA-RNTI can be simultaneously received in a certain subframe and / or the number of PDSCHs scheduled by using the PDCCHs.
- Information used for the purpose may be transmitted.
- the number of PDCCHs to which CRC scrambled by RA-RNTI is added may be one.
- the number of PDSCHs scheduled by using the PDCCH may be one.
- the terminal apparatus 1 determines the number of PDCCHs to which CRCs scrambled by Temporary C-RNTI that can be received simultaneously in a certain subframe and / or the number of PDSCHs scheduled by using the PDCCHs. Information used to indicate may be transmitted.
- the number of PDCCHs to which CRC scrambled by Temporary C-RNTI is added may be one.
- the number of PDSCHs scheduled by using the PDCCH may be one.
- the terminal device 1 schedules by using the number of PDCCHs to which CRCs scrambled by C-RNTI and / or SPS C-RNTI that can be simultaneously received in a certain subframe and / or using the PDCCHs are used.
- Information used to indicate the number of PDSCHs to be performed may be transmitted.
- the number of PDCCHs to which CRC scrambled by SPS C-RNTI is added may be one.
- the number of PDSCHs scheduled by using the PDCCH may be one.
- the PDCCH to which the CRC scrambled by the SPS C-RNTI is added is used for PDSCH scheduling.
- the terminal device 1 is used to indicate the number of combinations of PDCCH to which CRC scrambled by C-RNTI and / or SPS C-RNTI, which can be simultaneously received in a certain subframe, and PDSCH are added. Information may be transmitted.
- the PDSCH is a PDSCH scheduled by using the PDCCH.
- the base station apparatus 3 may activate the downlink cell in the MAC layer based on the set number of downlink cells that can be activated simultaneously.
- the terminal device 1 monitors the PDCCH / EPDCCH of the activated cell and receives the PDSCH via the PDCCH / EPDCCH. That is, the terminal device 1 monitors PDCCH / EPDCCH in the activated cell. Further, the terminal device 1 does not monitor the PDCCH / EPDCCH in the deactivated cell.
- the base station apparatus 3 may activate or deactivate one or a plurality of serving cells using an upper layer signal (for example, a MAC control element).
- an upper layer signal for example, a MAC control element
- the activation or deactivation mechanism may be based on a combination of a MAC control element and a deactivation timer.
- the base station apparatus 3 may independently activate or deactivate a plurality of secondary cells including a PUCCH secondary cell using a single command (a single activation / deactivation command). That is, the base station apparatus 3 may transmit a single command used for activating or deactivating the secondary cell using the MAC control element.
- timer value related to deactivation one common value may be set for each terminal device 1 by an upper layer (for example, RRC layer).
- a timer (timer value) related to deactivation may be held for each secondary cell.
- the base station apparatus 3 may transmit an upper layer signal including information for setting with a timer related to deactivation for the secondary cell.
- the number of cells that can simultaneously monitor PDCCH / EPDCCH, the number of cells that can simultaneously receive PDSCH, or the number of cells that can be activated simultaneously is not set for each downlink component carrier, and cell groups (for example, PUCCH cells) It may be set for each group).
- FIG. 10 shows an example of receiving PDCCH / EPDCCH and PDSCH corresponding to PDCCH / EPDCCH for each cell. That is, as described above, a DCI format used for scheduling of one PDSCH in one downlink cell may be defined as the DCI format (for example, may be defined as DCI format 1 or DCI format 1A). .
- PDCCH / EPDCCH used for transmission of DCI format used for scheduling of one PDSCH in one cell is also referred to as separately-coded Coding PDCCH / EPDCCH (second PDCCH / EPDCCH).
- FIG. 11 shows an example of collective coding (Joint coding) of this embodiment.
- FIG. 11 shows an example using PDCCH, it can also be applied to EPDCCH.
- cells 10, 11, and 12 are set by at least RRC.
- the cell 10 is a primary cell or a secondary cell.
- cell 11 and cell 12 are secondary cells. Transmission / reception in the primary cell is not scheduled by downlink control information transmitted in other cells.
- the terminal device 1 monitors the PDCCH of the cell 10 and receives the PDSCH in the cell 10, the PDSCH in the cell 11, and the PDSCH in the cell 12 based on the downlink control information (DCI) received on the PDCCH of the cell 10. .
- DCI downlink control information
- whether or not the downlink control information for a plurality of cells is collectively encoded may be set for the terminal device 1 via an RRC parameter, for example, third information.
- a DCI format used for scheduling a plurality of PDSCHs in a plurality of downlink cells may be defined.
- the downlink control information format one PDSCH may be scheduled in each of a plurality of downlink cells.
- the downlink control information format used for scheduling a plurality of PDSCHs in a plurality of downlink cells is referred to as DCI format 6 and / or DCI format 6A.
- CRC parity bits scrambled by C-RNTI are added to DCI format 6 and DCI format 6A.
- PDCCH / EPDCCH used for transmission of DCI format 6 / 6A is also referred to as batch-coded PDCCH / EPDCCH (first PDCCH / EPDCCH).
- first PDCCH / EPDCCH Alternatively, other names such as DCI format 2E may be used.
- the monitoring of the first PDDCH / EPDCCH by the terminal device 1 is also referred to as monitoring based on the first PDDCH / EPDCCH. That is, monitoring based on the first PDDCH / EPDCCH may include attempting to decode the first PDDCH / EPDCCH. Monitoring means trying to decode each PDCCH in the set of PDCCH candidates and / or trying to decode each EPDCCH in the set of EPDCCH candidates according to the downlink control information format to be monitored. .
- One or a plurality of cells on which PDSCH is scheduled by using one DCI format 6 / 6A in a certain cell may be set by the base station apparatus 3.
- the base station apparatus 3 sets one or a plurality of cells in which PDSCH is scheduled by using one DCI format 6 / 6A in a certain cell by using information included in a higher layer signal. Also good.
- the base station device 3 is configured to perform monitoring based on the first PDCCH / EPDCCH (receive DCI format 6), and information indicating that the PDSCH is scheduled in the serving cell. May be transmitted for each serving cell.
- monitoring PDCCH of the cell 10 may be set in the terminal device 1 by the second information of the RRC layer, for example, or may be set implicitly (Implicit) from those set as other parameters. Also good.
- the terminal device 1 and the base station device 3 may be set to perform monitoring based on the first PDCCH / EPDCCH in the cell 10. Also, the terminal device 1 and the base station device 3 transmit information indicating that the first PDCCH / EPDCCH (which may be DCI format 6) used for PDSCH scheduling in the cell 10 is transmitted in the cell 10. Also good. The terminal device 1 and the base station device 3 may transmit information indicating that the first PDCCH / EPDCCH used for PDSCH scheduling in the cell 11 is transmitted in the cell 10. In addition, the base station apparatus 3 may transmit information indicating that the first PDCCH / EPDCCH used for PDSCH scheduling in the cell 12 is transmitted in the cell 10.
- the terminal device 1 and the base station device 3 may be set to perform monitoring based on the first PDCCH / EPDCCH in the cell 10. Also, the terminal device 1 and the base station device 3 transmit information indicating that the first PDCCH / EPDCCH (which may be DCI format 6) used for PDSCH scheduling in the cell 10 is transmitted in
- the base station apparatus 3 when the base station apparatus 3 is set so as to assume the PDCCH / EPDCCH batch coding for the terminal device 1, the base station apparatus 3 does not use the PDCCH / EPDCCH individual coding as shown in FIG. PDCCH / EPDCCH may be transmitted only by the conversion.
- the terminal device 1 may monitor the PDCCH / EPDCCH of the set downlink cell without expecting individual coding when batch coding is set.
- the base station apparatus 3 may set for each serving cell whether monitoring based on the first PDCCH / EPDCCH or monitoring based on the second PDCCH / EPDCCH is performed.
- the base station apparatus 3 outputs an upper layer signal including information used to instruct whether to perform monitoring based on the first PDCCH / EPDCCH or to perform monitoring based on the second PDCCH / EPDCCH. You may send it.
- it is not set to perform both monitoring based on the first PDCCH / EPDCCH and monitoring based on the second PDCCH / EPDCCH for a certain serving cell. That is, in one serving cell, monitoring based on the first PDCCH / EPDCCH and monitoring based on the second PDCCH / EPDCCH may not be mixed.
- FIG. 12 is a diagram showing an example of the DCI format 6 / 6A in the present embodiment.
- DCI format 6 / 6A (downlink control information to be collectively encoded) includes downlink control information 100 for cell 10, downlink control information 110 for cell 11, downlink control information 120 for cell 12, and inter-cell. Common downlink control information 130 and other downlink control information 140.
- a CRC parity bit 150 scrambled by C-RNTI is added to the DCI format 6 / 6A.
- the downlink control information 120 for the deactivated cell 12 may not be included in the DCI format 6 / 6A.
- the downlink control information 120 for the deactivated cell 12 may be reserved.
- Each of the bits of the downlink control information 120 for the deactivated cell 12 may be set to a predetermined value (eg, “0”).
- DCI format 6 / 6A is monitored by USS (UE-specific search space) in cell 10 and not monitored by CSS (common search space) in cell 10.
- CSS and USS are search spaces.
- a search space is a set of PDCCH candidates monitored by the UE. Monitoring means trying to decode each PDCCH in the set of PDCCH candidates depending on the DCI format being monitored.
- the USS is given by referring to the C-RNTI assigned to the terminal device 1.
- the CSS is given regardless of the C-RNTI assigned to the terminal device 1. CSS is common among a plurality of terminal devices 1.
- the terminal apparatus 1 may decode / monitor the DCI format 6A instead of the DCI format 1A in a cell in which batch coding of downlink control information for a plurality of cells is set.
- the terminal device 1 may decode / monitor the DCI format 6 instead of the DCI format 2 / 2A / 2B / 2C / 2D in a cell in which batch coding of downlink control information for a plurality of cells is set.
- the terminal device 1 may decode the DCI format 1A in the search space (CSS and USS) in the primary cell in which batch encoding of downlink control information for a plurality of cells is not set.
- the terminal device 1 may decode the DCI format 2 / 2A / 2B / 2C / 2D in the USS in the primary cell in which batch encoding of downlink control information for a plurality of cells is not set.
- the terminal device 1 is SPS in the search space (CSS and USS) in the primary cell.
- DCI format 1A to which CRC parity bit scrambled by C-RNTI is added is decoded, and DCI format 2 / 2A / 2B / 2C to which CRC parity bit scrambled by SPS C-RNTI is added in USS in the primary cell Decodes 2D.
- the terminal device 1 may decode the DCI format 6A in the search space (CSS and USS) in the primary cell in which batch coding of downlink control information for a plurality of cells is set.
- the terminal device 1 may decode the DCI format 6 in the USS in the primary cell in which batch encoding of downlink control information for a plurality of cells is not set.
- the terminal device 1 when the terminal device 1 is set to decode the PDCCH with the CRC parity bit scrambled by the upper layer by the SPS C-RNTI, the terminal device 1 is scrambled by the SPS C-RNTI in the CSS in the primary cell. It is not necessary to decode the DCI format 1A to which the CRC parity bit is added and to decode the DCI format 6 / 6A to which the CRC parity bit scrambled by the SPS C-RNTI is added.
- the terminal device 1 may decode the DCI format 1A in the search space (CSS and USS) in the primary cell in which batch coding of downlink control information for a plurality of cells is set.
- the terminal device 1 may decode the DCI format 6 in the USS in the primary cell in which batch encoding of downlink control information for a plurality of cells is not set.
- the terminal device 1 is SPS in the search space (CSS and USS) in the primary cell.
- the DCI format 1A to which the CRC parity bits scrambled by the C-RNTI are added may be decoded, and the DCI format 6 to which the CRC parity bits scrambled by the SPS C-RNTI are added may not be decoded.
- monitoring of the DCI format to which the CRC parity bits scrambled by the SPS C-RNTI are added is controlled based on whether or not collective coding is set for a plurality of cells including the primary cell. That is, the search space in which the DCI format to which the CRC parity bit scrambled by the SPS C-RNTI is added is based on whether or not collective coding is set for a plurality of cells including the primary cell.
- the base station device 3 does not simultaneously set the batch coding for a plurality of cells including the primary cell and the decoding of the PDCCH with the CRC parity bit scrambled by the SPS C-RNTI. .
- the terminal apparatus 1 sets simultaneous encoding for a plurality of cells including the primary cell and decoding of PDCCH with CRC parity bits scrambled by SPS C-RNTI. Not expected to do.
- the terminal device 1 sets simultaneous encoding for a plurality of cells including a primary cell and decoding of a PDCCH with CRC parity bits scrambled by SPS C-RNTI. When the instructed upper layer signal / information is received, the upper layer signal / information may be discarded.
- batch encoding is always set for a plurality of secondary cells. That is, in another example of the present embodiment, batch encoding is not set for the primary cell. That is, in another example of the present embodiment, the downlink control information that is collectively encoded does not include the downlink control information for the PDSCH in the primary cell.
- FIG. 13 is a schematic block diagram showing the configuration of the terminal device 1 of the present embodiment.
- the terminal device 1 includes a wireless transmission / reception unit 10 and an upper layer processing unit 14.
- the wireless transmission / reception unit 10 includes an antenna unit 11, an RF (Radio Frequency) unit 12, and a baseband unit 13.
- the upper layer processing unit 14 includes a control unit 15 and a radio resource control unit 16.
- the wireless transmission / reception unit 10 is also referred to as a transmission unit or a reception unit.
- the upper layer processing unit 14 outputs the uplink data (transport block) generated by the user operation or the like to the radio transmission / reception unit 10.
- the upper layer processing unit 14 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 a 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 16 included in the upper layer processing unit 14 manages various setting information / parameters of the own device.
- the radio resource control unit 16 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 16 sets various setting information / parameters based on information indicating various setting information / parameters received from the base station apparatus 3.
- the wireless transmission / reception unit 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding.
- the radio transmission / reception unit 10 separates, demodulates, and decodes the signal received from the base station apparatus 3 and outputs the decoded information to the upper layer processing unit 14.
- the radio transmission / reception unit 10 generates a transmission signal by modulating and encoding data, and transmits the transmission signal to the base station apparatus 3.
- the RF unit 12 converts the signal received via the antenna unit 11 into a baseband signal by orthogonal demodulation (down-conversion: down covert), and removes unnecessary frequency components.
- the RF unit 12 outputs the processed analog signal to the baseband unit.
- the baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal.
- the baseband unit 13 removes a portion corresponding to CP (Cyclic Prefix) from the converted digital signal, performs fast Fourier transform (FFT) on the signal from which CP has been removed, and generates a frequency domain signal. Extract.
- CP Cyclic Prefix
- FFT fast Fourier transform
- the baseband unit 13 performs inverse fast Fourier transform (Inverse Fastier Transform: IFFT) to generate an SC-FDMA symbol, adds a CP to the generated SC-FDMA symbol, and converts a baseband digital signal into Generating and converting a baseband digital signal to an analog signal.
- IFFT inverse fast Fourier transform
- the baseband unit 13 outputs the converted analog signal to the RF unit 12.
- the RF unit 12 removes an extra frequency component from the analog signal input from the baseband unit 13 using a low-pass filter, up-converts the analog signal to a carrier frequency, and transmits the signal via the antenna unit 11. To do.
- FIG. 14 is a schematic block diagram showing the configuration of the base station apparatus 3 of the present embodiment.
- the base station apparatus 3 includes a radio transmission / reception unit 30 and an upper layer processing unit 34.
- the wireless transmission / reception unit 30 includes an antenna unit 31, an RF unit 32, and a baseband unit 33.
- the upper layer processing unit 34 includes a control unit 35 and a radio resource control unit 36.
- the wireless transmission / reception unit 30 is also referred to as a transmission unit or a reception unit.
- the upper layer processing unit 34 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.
- MAC Medium Access Control
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- Radio Radio Resource Control
- the radio resource control unit 36 included in the upper layer processing unit 34 generates downlink data (transport block), system information, RRC message, MAC CE (Control Element), etc. arranged in the physical downlink channel, or higher layer. Obtained from the node and output to the wireless transceiver 30.
- the radio resource control unit 36 manages various setting information / parameters of each terminal device 1.
- the radio resource control unit 36 may set various setting information / parameters for each terminal device 1 via an upper layer signal. That is, the radio resource control unit 36 transmits / broadcasts information indicating various setting information / parameters.
- the function of the wireless transceiver 30 is the same as that of the wireless transceiver 10 and will not be described.
- the terminal device in the present embodiment includes a first physical downlink control channel including first downlink control information used for allocating resources corresponding to a plurality of physical downlink shared channels, or one A receiving unit for decoding, in a primary cell, a second physical downlink control channel including second downlink control information used for allocating resources corresponding to the physical downlink shared channel;
- the link control channel and the second physical downlink control channel include CRC parity bits scrambled by C-RNTI and include downlink control information used to control semi-persistent scheduling in the downlink.
- Third physical downlink control channel There search space that is decoded is based on the first physical downlink control channel whether it is set to decode the primary cell.
- the terminal device when the first physical downlink control channel is set to be decoded in the primary cell, downlink control used for controlling semi-persistent scheduling in the downlink.
- the search space in which the third physical downlink control channel including information is decoded is a common search space in the primary cell.
- downlink control used for controlling semi-persistent scheduling in the downlink when the first physical downlink control channel is not set to be decoded in the primary cell.
- Search spaces in which the third physical downlink control channel including information is decoded are CSS (Common Search Space) in the primary cell and USS (UE-specific Search Space) in the primary cell.
- the base station apparatus in this embodiment is a base station apparatus that communicates with a terminal apparatus, and includes first downlink control information used to allocate resources corresponding to a plurality of physical downlink shared channels.
- a first physical downlink control channel or a second physical downlink control channel including second downlink control information used for allocating resources corresponding to one physical downlink shared channel in the primary cell
- the terminal apparatus when the terminal apparatus is configured to decode the first physical downlink control channel in a primary cell, in order to control the semi-persistent scheduling in the downlink
- the search space in which the third physical downlink control channel including the downlink control information to be used is transmitted is a common search space in the primary cell.
- the terminal apparatus when the terminal apparatus is not set to decode the first physical downlink control channel in the primary cell, in order to control the semi-persistent scheduling in the downlink
- the search space in which the third physical downlink control channel including downlink control information to be used is transmitted is CSS (Common Search Space) in the primary cell and USS (UE-specific Search Space) in the primary cell.
- 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 functioned) 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 serving as a server or a client may be included and a program that holds a program for a certain period of time.
- the program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.
- 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.
- Some aspects of the present invention can be applied to a terminal device, a base station device, a communication method, an integrated circuit, and the like that need to efficiently transmit downlink control information.
- Terminal device 3 Base station device 5 Downlink cell 6 Downlink cell 7 Downlink cell 10
- Radio transmission / reception unit 11 Antenna unit 12
- Baseband unit 13 Baseband unit 14
- Upper layer processing unit 15 Control unit 16
- Radio Resource control unit 30 Wireless transmission / reception unit 31
- Antenna unit 32 RF unit 33
- Baseband unit 34 Upper layer processing unit 35
- Control unit 36 Radio resource control unit
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- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
本願は、2015年4月10日に、日本に出願された特願2015-080509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)
プライマリーPUCCHセルグループに対するインデックスは常に0である。
セカンダリーPUCCHセルグループに対するインデックスはネットワーク装置(基地局装置3)によって設定されてもよい。
3 基地局装置
5 下りリンクセル
6 下りリンクセル
7 下りリンクセル
10 無線送受信部
11 アンテナ部
12 RF部
13 ベースバンド部
14 上位層処理部
15 制御部
16 無線リソース制御部
30 無線送受信部
31 アンテナ部
32 RF部
33 ベースバンド部
34 上位層処理部
35 制御部
36 無線リソース制御部
Claims (18)
- 端末装置であって、
複数の物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第1の下りリンク制御情報を含む第1の物理下りリンク制御チャネル、または、1つの物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第2の下りリンク制御情報を含む第2の物理下りリンク制御チャネルを、プライマリーセルにおいてデコードする受信部を備え、
前記第1の物理下りリンク制御チャネル、および、前記第2の物理下りリンク制御チャネルは、C-RNTIによってスクランブルされたCRCパリティビットを含み、
下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルがデコードされるサーチスペースは、前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されているか否かに基づく
端末装置。 - 前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されている場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルがデコードされるサーチスペースは、プライマリーセルにおけるコモンサーチスペースである
請求項1の端末装置。 - 前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されていない場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルがデコードされるサーチスペースは、プライマリーセルにおけるCSS(Common Search Space)およびプライマリーセルにおけるUSS(UE-specific Search Space)である
請求項1の端末装置。 - 端末装置と通信する基地局装置であって、
複数の物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第1の下りリンク制御情報を含む第1の物理下りリンク制御チャネル、または、1つの物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第2の下りリンク制御情報を含む第2の物理下りリンク制御チャネルを、プライマリーセルにおいて前記端末装置に送信する送信部を備え、
前記第1の物理下りリンク制御チャネル、および、前記第2の物理下りリンク制御チャネルは、C-RNTIによってスクランブルされたCRCパリティビットを含み、
下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルが送信されるサーチスペースは、前記端末装置が前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されているか否かに基づく
基地局装置。 - 前記端末装置が前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されている場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルが送信されるサーチスペースは、プライマリーセルにおけるコモンサーチスペースである
請求項4の基地局装置。 - 前記端末装置が前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されていない場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルが送信されるサーチスペースは、プライマリーセルにおけるCSS(Common Search Space)およびプライマリーセルにおけるUSS(UE-specific Search Space)である
請求項4の基地局装置。 - 端末装置に用いられる通信方法であって、
複数の物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第1の下りリンク制御情報を含む第1の物理下りリンク制御チャネル、または、1つの物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第2の下りリンク制御情報を含む第2の物理下りリンク制御チャネルを、プライマリーセルにおいてデコードし、
前記第1の物理下りリンク制御チャネル、および、前記第2の物理下りリンク制御チャネルは、C-RNTIによってスクランブルされたCRCパリティビットを含み、
下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルがデコードされるサーチスペースは、前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されているか否かに基づく
通信方法。 - 前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されている場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルがデコードされるサーチスペースは、プライマリーセルにおけるコモンサーチスペースである
請求項7の通信方法。 - 前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されていない場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルがデコードされるサーチスペースは、プライマリーセルにおけるCSS(Common Search Space)およびプライマリーセルにおけるUSS(UE-specific Search Space)である
請求項7の通信方法。 - 端末装置と通信する基地局装置に用いられる通信方法であって、
複数の物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第1の下りリンク制御情報を含む第1の物理下りリンク制御チャネル、または、1つの物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第2の下りリンク制御情報を含む第2の物理下りリンク制御チャネルを、プライマリーセルにおいて前記端末装置に送信し、
前記第1の物理下りリンク制御チャネル、および、前記第2の物理下りリンク制御チャネルは、C-RNTIによってスクランブルされたCRCパリティビットを含み、
下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルが送信されるサーチスペースは、前記端末装置が前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されているか否かに基づく
通信方法。 - 前記端末装置が前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されている場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルが送信されるサーチスペースは、プライマリーセルにおけるコモンサーチスペースである
請求項10の通信方法。 - 前記端末装置が前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されていない場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルが送信されるサーチスペースは、プライマリーセルにおけるCSS(Common Search Space)およびプライマリーセルにおけるUSS(UE-specific Search Space)である
請求項10の通信方法。 - 端末装置に実装される集積回路であって、
複数の物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第1の下りリンク制御情報を含む第1の物理下りリンク制御チャネル、または、1つの物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第2の下りリンク制御情報を含む第2の物理下りリンク制御チャネルを、プライマリーセルにおいてデコードする機能を含む一連の機能を前記端末装置に発揮させ、
前記第1の物理下りリンク制御チャネル、および、前記第2の物理下りリンク制御チャネルは、C-RNTIによってスクランブルされたCRCパリティビットを含み、
下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルがデコードされるサーチスペースは、前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されているか否かに基づく
集積回路。 - 前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されている場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルがデコードされるサーチスペースは、プライマリーセルにおけるコモンサーチスペースである
請求項13の集積回路。 - 前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されていない場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルがデコードされるサーチスペースは、プライマリーセルにおけるCSS(Common Search Space)およびプライマリーセルにおけるUSS(UE-specific Search Space)である
請求項13の集積回路。 - 端末装置と通信する基地局装置に実装される集積回路であって、
複数の物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第1の下りリンク制御情報を含む第1の物理下りリンク制御チャネル、または、1つの物理下りリンク共用チャネルに対応するリソースを割り当てるために用いられる第2の下りリンク制御情報を含む第2の物理下りリンク制御チャネルを、プライマリーセルにおいて前記端末装置に送信する機能を含む一連の機能を前記基地局装置に発揮させ、
前記第1の物理下りリンク制御チャネル、および、前記第2の物理下りリンク制御チャネルは、C-RNTIによってスクランブルされたCRCパリティビットを含み、
下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルが送信されるサーチスペースは、前記端末装置が前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されているか否かに基づく
集積回路。 - 前記端末装置が前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されている場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルが送信されるサーチスペースは、プライマリーセルにおけるコモンサーチスペースである
請求項16の集積回路。 - 前記端末装置が前記第1の物理下りリンク制御チャネルをプライマリーセルにおいてデコードするよう設定されていない場合、下りリンクにおけるセミパーシステントスケジューリングを制御するために用いられる下りリンク制御情報を含む第3の物理下りリンク制御チャネルが送信されるサーチスペースは、プライマリーセルにおけるCSS(Common Search Space)およびプライマリーセルにおけるUSS(UE-specific Search Space)である
請求項16の集積回路。
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| JP2017511053A JPWO2016163464A1 (ja) | 2015-04-10 | 2016-04-07 | 端末装置、基地局装置、通信方法、および、集積回路 |
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| WO2024242022A1 (ja) * | 2023-05-19 | 2024-11-28 | 株式会社Nttドコモ | 端末及び無線通信方法 |
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| CN119521246A (zh) * | 2023-08-22 | 2025-02-25 | 上海华为技术有限公司 | 一种通信方法、装置和系统 |
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- 2016-04-07 WO PCT/JP2016/061417 patent/WO2016163464A1/ja not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2020511903A (ja) * | 2017-03-24 | 2020-04-16 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 指示情報送信方法および装置 |
| US11057916B2 (en) | 2017-03-24 | 2021-07-06 | Huawei Technologies Co., Ltd. | Methods and apparatus for indication information communication |
| JP2022104989A (ja) * | 2017-03-24 | 2022-07-12 | 華為技術有限公司 | 指示情報送信方法および装置 |
| JP7389164B2 (ja) | 2017-03-24 | 2023-11-29 | 華為技術有限公司 | 指示情報送信方法および装置 |
| JP2023522877A (ja) * | 2020-04-16 | 2023-06-01 | 維沃移動通信有限公司 | 情報伝送方法及び機器 |
| JP7564884B2 (ja) | 2020-04-16 | 2024-10-09 | 維沃移動通信有限公司 | 情報伝送方法及び機器 |
| US12426057B2 (en) | 2020-04-16 | 2025-09-23 | Vivo Mobile Communication Co., Ltd. | Information transmission method and device |
| WO2024242022A1 (ja) * | 2023-05-19 | 2024-11-28 | 株式会社Nttドコモ | 端末及び無線通信方法 |
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| US20180131598A1 (en) | 2018-05-10 |
| JPWO2016163464A1 (ja) | 2018-02-01 |
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