WO2021039423A1 - 端末及び無線通信方法 - Google Patents
端末及び無線通信方法 Download PDFInfo
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- WO2021039423A1 WO2021039423A1 PCT/JP2020/030792 JP2020030792W WO2021039423A1 WO 2021039423 A1 WO2021039423 A1 WO 2021039423A1 JP 2020030792 W JP2020030792 W JP 2020030792W WO 2021039423 A1 WO2021039423 A1 WO 2021039423A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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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
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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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
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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
- 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
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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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
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0628—Diversity capabilities
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Definitions
- the number of candidates that can be set is limited. In order to use many candidates, delay and resource consumption may occur when resetting by upper layer signaling.
- FIG. 1 is a diagram showing an example of beam correspondence.
- 2A and 2B are diagrams showing an example of the PDSCH QCL assumption.
- FIG. 3 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
- FIG. 4 is a diagram showing an example of the configuration of the base station according to the embodiment.
- FIG. 5 is a diagram showing an example of the configuration of the user terminal according to the embodiment.
- FIG. 6 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
- the DL-RS may be a CSI-RS (also referred to as a Tracking Reference Signal (TRS)) used for tracking or a reference signal (also referred to as a QRS) used for QCL detection.
- CSI-RS also referred to as a Tracking Reference Signal (TRS)
- TRS Tracking Reference Signal
- QRS reference signal
- the UE sets the TCI existence information set to "enabled” for the CORESET that schedules the PDSCH (CORESET used for the PDCCH transmission that schedules the PDSCH), the UE sets the TCI field. It may be assumed that it exists in the DCI format 1-11 of the PDCCH transmitted on the CORESET.
- the UE uses the TCI state or QCL assumption for the PDSCH to determine the QCL of the PDSCH antenna port for the PDCCH transmission that schedules the PDSCH. It may be assumed that it is the same as the TCI state or QCL assumption applied to.
- thresholds are the time length for QCL, "timeDurationForQCL”, “Threshold”, “Threshold for offset between a DCI indicating a TCI state and a PDSCH scheduled by the DCI”, “Threshold-Sched-Offset”, and schedule offset threshold. , Scheduling offset threshold, and so on.
- the UE When more than one SRI related to PUCCH is set, the UE has one PUCCH resource at a certain time based on PUCCH spatial relation activation / deactivation MAC CE (PUCCH spatial relation Activation / Deactivation MAC CE).
- PUCCH spatial relation activation / deactivation MAC CE PUCCH spatial relation Activation / Deactivation MAC CE.
- One PUCCH SRI may be controlled to be active.
- the SRS resource set information may include information on the SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, the SRS resource type, and the usage of the SRS.
- SRS-ResourceSetId information on the SRS resource set ID
- SRS-ResourceId list of SRS resource IDs
- RRC parameter "usage", L1 (Layer-1) parameter "SRS-SetUse" are, for example, beam management, codebook (CB), noncodebook (NCB). ), Antenna switching, etc.
- SRS for codebook or non-codebook use may be used to determine a precoder for codebook-based or non-codebook-based PUSCH transmission based on SRI.
- the UE determines a precoder for PUSCH transmission based on SRI, a transmission rank index (Transmitted Rank Indicator: TRI), and a transmission precoding matrix index (Transmitted Precoding Matrix Indicator: TPMI). You may.
- the UE may determine a precoder for PUSCH transmission based on SRI.
- BC means, for example, a node (for example, a base station or a UE) determines a beam (transmission beam, Tx beam) to be used for signal transmission based on a beam (reception beam, Rx beam) used for signal reception. It may be the ability to do (Fig. 1).
- the UE When the UE sets spatial relation information about SSB or CSI-RS and SRS for a certain SRS resource (for example, when BC is present), the UE is a spatial domain for receiving the SSB or CSI-RS.
- the SRS resource may be transmitted using the same spatial domain filter (spatial domain transmit filter) as the filter (spatial domain receive filter). In this case, the UE may assume that the SSB or CSI-RS UE receive beam and the SRS UE transmit beam are the same.
- the UE may determine the spatial relationship of PUSCH scheduled by the DCI based on the value of a predetermined field (eg, the SRS resource identifier (SRI) field) in the DCI (eg DCI format 0_1). Specifically, the UE may use the spatial relationship information of the SRS resource (for example, “spatialRelationInfo” of the RRC information element) determined based on the value of the predetermined field (for example, SRI) for PUSCH transmission.
- a predetermined field eg, the SRS resource identifier (SRI) field
- SRI spatialRelationInfo
- the maximum number of TCI states (maxNrofTCI-States) that can be set by RRC is 128, and the maximum number of TCI states (maxNrofTCI-StatesPDCCH) for PDCCH is 64.
- cells, CCs, carriers, BWPs, and bands may be read as each other.
- the default spatial relationship may be the default TCI state (default RS, default TCI state or QCL assumption).
- the default TCI state may be read as the TCI state or active TCI state of a particular CORESET or QCL assumption, or may be read as the TCI state of the CORESET with the lowest CORESET-ID in the latest slot.
- One or more CORESETs in the active BWP of the serving cell have the lowest CORESET-ID in the latest slot monitored by the UE and are used to indicate the PDCCH QCL of the CORESETs associated with the monitored search space. It may be read as RS for the QCL parameter to be used, or it may be read as the TCI state or QCL assumption of the CORESET having the lowest CORESET-ID in the latest slot and associated with the monitored search space.
- DL channel for example, RS of QCL type D in TCI state or QCL assumption
- RS related to QCL parameter of specific DL transmission RS which is specific DL transmission and QCL.
- the specific CORESET may be a CORESET having a CORESET ID specified by higher layer signaling (for example, spatial relation information of a specific UL transmission), or may be CORESET0.
- the specific CORESET may or may not include CORESET0.
- the default spatial relationship may be the PRACH resource used for the latest PRACH transmission or the RS (RS resource index, SSB index, CSI-RS resource index) corresponding to the PRACH occasion.
- the default spatial relationship is Msg. It may be a spatial relationship of 3 (PUSCH scheduled by UL grant (RAR UL grant) included in random access response (RAR)).
- the default spatial relationship may be a spatial relationship corresponding to a specific PUCCH resource.
- the specific DL transmission may be a PUCCH resource having the lowest ID in the active UL BWP of the cell, or the lowest ID in the active UL BWP of the cell. It may be a PUCCH resource group having.
- the specific DL transmission may be a PDCCH that triggers the A-SRS.
- the specific DL transmission may be a PDCCH that schedules the MAC CE or a PDSCH that carries the MAC CE. Good.
- the specific DL transmission may be the latest PDSCH.
- the specific DL transmission may be set in the UE by higher layer signaling, or may be specified in the specifications.
- DL RS for path loss measurement for example, pathlossReferenceRS in SRS-ResourceSet in SRS-Config, PUCCH-PathlossReferenceRS in PUCCH-PowerControl in PUCCH-Config, PUSCH in PUSCH-PowerControl in PUSCH-Config. -PathlossReferenceRS
- the DL RS for path loss measurement may be CSI-RS or SSB.
- the path loss reference RS may follow the active TCI state.
- the default spatial relationship may be set, instructed or specified by at least one of RRC and MAC CE and DCI. This specific spatial relationship may be referred to as a reference spatial relationship, a spatial relationship setting, and the like.
- the reference space relationship is referred to as Rel. Similar to 15, it may be set as any of SSB and CSI-RS resources and SRS resources.
- the reference space relationship may be an ID for specifying the TCI state. This ID may be an ID associated with at least one of the CORESET, PDSCH, and CSI-RS resources.
- the reference space relationship may be in the UL TCI state.
- the condition may be a case where it is implicitly or explicitly set to use the default spatial relationship for the spatial relationship of the specific UL transmission.
- the case where the UE is implicitly set to use the default spatial relationship for the specific UL transmission is, for example, the case where the UE is not set for the specific UL transmission spatial relationship (eg, spatialRelationInfo, PUCCH-SpatialRelationInfo). You may.
- the case where the UE is explicitly set to use the default spatial relationship for the spatial relationship of the specific UL transmission may be the case where the specific parameter is set by the specific upper layer parameter.
- the condition may be implicitly or explicitly set to report specific UE capability information and use a specific spatial relationship.
- a UE that supports a specific spatial relationship may report UE capability information indicating the QCL source type that supports the specific spatial relationship.
- the QCL source type may be at least one of CORESET, PDCCH, and PDSCH.
- UEs that do not support a particular spatial relationship will use a specific spatial relationship instead of the default spatial relationship.
- Spatial relationships corresponding to PUCCH resources may be used.
- the condition may be implicitly or explicitly set to use the default spatial relationship.
- Beam correspondence can be appropriately performed by using the beam actually used in the reception of the DL transmission corresponding to the specific UL transmission for the specific UL transmission.
- multiple active TCI states When using multiple TRPs, multiple active TCI states will be set, and if the default spatial relationship is based on any of the multiple active TCI states, the default spatial relationship may change frequently. , There may be cases where the best spatial relationship is not achieved. By activating only one TCI state, the frequency of changes in the default spatial relationship can be reduced.
- CA carrier aggregation
- FRs bands or frequency ranges
- the default spatial relationship may be the above-mentioned default TCI state.
- FIG. 3 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
- the wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc. specified by Third Generation Partnership Project (3GPP). ..
- the wireless communication system 1 includes a base station 11 that forms a macro cell C1 having a relatively wide coverage, and a base station 12 (12a-12c) that is arranged in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. You may prepare.
- the user terminal 20 may be located in at least one cell. The arrangement, number, and the like of each cell and the user terminal 20 are not limited to the mode shown in the figure.
- the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.
- the user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.
- the wireless access method may be called a waveform.
- another wireless access system for example, another single carrier transmission system, another multi-carrier transmission system
- the UL and DL wireless access systems may be used as the UL and DL wireless access systems.
- the uplink shared channel Physical Uplink Shared Channel (PUSCH)
- the uplink control channel Physical Uplink Control Channel (PUCCH)
- the random access channel shared by each user terminal 20 are used.
- Physical Random Access Channel (PRACH) Physical Random Access Channel or the like may be used.
- PDSCH User data, upper layer control information, System Information Block (SIB), etc. are transmitted by PDSCH.
- User data, upper layer control information, and the like may be transmitted by the PUSCH.
- MIB Master Information Block
- PBCH Master Information Block
- One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels.
- One or more search spaces may be referred to as a search space set.
- the "search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, etc. of the present disclosure may be read as each other.
- downlinks, uplinks, etc. may be expressed without “links”. Further, it may be expressed without adding "Physical" at the beginning of various channels.
- the transmission / reception unit 120 may include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123.
- the baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212.
- the transmitter / receiver 120 includes a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on common recognition in the technical fields according to the present disclosure. be able to.
- the transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit.
- the transmission unit may be composed of a transmission processing unit 1211 and an RF unit 122.
- the receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.
- the transmission / reception unit 120 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.
- digital beamforming for example, precoding
- analog beamforming for example, phase rotation
- the transmission / reception unit 120 processes, for example, the Packet Data Convergence Protocol (PDCP) layer and the Radio Link Control (RLC) layer for data, control information, etc. acquired from the control unit 110 (for example,).
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Control
- HARQ retransmission control HARQ retransmission control
- the transmission / reception unit 120 performs channel coding (may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (Discrete Fourier Transform (DFT)) for the bit string to be transmitted.
- the base band signal may be output by performing processing (if necessary), inverse fast Fourier transform (IFFT) processing, precoding, digital-analog conversion, and other transmission processing.
- IFFT inverse fast Fourier transform
- the transmission / reception unit 120 may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 130. ..
- the transmission / reception unit 120 (reception processing unit 1212) performs analog-digital conversion, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) on the acquired baseband signal. )) Processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing are applied. User data and the like may be acquired.
- FFT fast Fourier transform
- IDFT inverse discrete Fourier transform
- the transmission / reception unit 120 may perform measurement on the received signal.
- the measurement unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, or the like based on the received signal.
- the measuring unit 123 has received power (for example, Reference Signal Received Power (RSRP)) and reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)).
- RSRP Reference Signal Received Power
- RSSQ Reference Signal Received Quality
- SINR Signal to Noise Ratio
- Signal strength for example, Received Signal Strength Indicator (RSSI)
- propagation path information for example, CSI
- the measurement result may be output to the control unit 110.
- the transmitting unit and the receiving unit of the base station 10 in the present disclosure may be composed of at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.
- the transmission / reception unit 120 may transmit a reference signal (for example, SSB, CSI-RS, etc.).
- the transmission / reception unit 120 may transmit information (MAC CE or DCI) indicating the TCI state for specific DL transmission.
- the TCI state may indicate at least one of a reference signal (eg, SSB, CSI-RS, etc.), QCL type, cell transmitting the reference signal.
- the TCI state may indicate one or more reference signals.
- the one or more reference signals may include a QCL type A reference signal or a QCL type D reference signal.
- this example mainly shows the functional blocks of the feature portion in the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.
- the control unit 210 controls the entire user terminal 20.
- the control unit 210 can be composed of a controller, a control circuit, and the like described based on the common recognition in the technical field according to the present disclosure.
- the transmission / reception unit 220 may include a baseband unit 221 and an RF unit 222, and a measurement unit 223.
- the baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212.
- the transmitter / receiver 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure.
- the transmission / reception unit 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
- the transmission / reception unit 220 may transmit the above-mentioned uplink channel, uplink reference signal, and the like.
- the control unit 210 When the spatial relationship for the specific UL transmission is not set, the control unit 210 performs pseudo-colocation (QCL) regarding the latest slot for the start symbol of the specific UL transmission or the first or last symbol of the DL transmission corresponding to the specific UL transmission. ) Parameter (Embodiment 1) and the TCI state or path loss reference reference signal (Embodiment 2) when only one transmission setting instruction (TCI) state is activated for a specific DL transmission.
- TCI transmission setting instruction
- One specific spatial relationship may be determined.
- the transmission / reception unit 220 may perform the specific UL transmission according to the specific spatial relationship.
- each functional block is realized by using one physically or logically connected device, or directly or indirectly (for example, two or more physically or logically separated devices). , Wired, wireless, etc.) and may be realized using these plurality of devices.
- the functional block may be realized by combining the software with the one device or the plurality of devices.
- processor 1001 may be a plurality of processors. Further, the processing may be executed by one processor, or the processing may be executed simultaneously, sequentially, or by using other methods by two or more processors.
- the processor 1001 may be mounted by one or more chips.
- the processor 1001 For each function of the base station 10 and the user terminal 20, for example, by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an operation and communicates via the communication device 1004. It is realized by controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
- predetermined software program
- the memory 1002 is a computer-readable recording medium, for example, at least a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EPROM), a Random Access Memory (RAM), or any other suitable storage medium. It may be composed of one.
- the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
- the memory 1002 can store a program (program code), a software module, or the like that can be executed to implement the wireless communication method according to the embodiment of the present disclosure.
- the base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (Digital Signal Processor (DSP)), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), and the like. It may be configured to include hardware, and a part or all of each functional block may be realized by using the hardware. For example, processor 1001 may be implemented using at least one of these hardware.
- DSP Digital Signal Processor
- ASIC Application Specific Integrated Circuit
- PLD Programmable Logic Device
- FPGA Field Programmable Gate Array
- the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
- the numerology includes, for example, subcarrier spacing (SubCarrier Spacing (SCS)), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval (TTI)), number of symbols per TTI, and wireless frame configuration.
- SCS subcarrier Spacing
- TTI Transmission Time Interval
- a specific filtering process performed by the transmitter / receiver in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
- TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
- the base station schedules each user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
- the definition of TTI is not limited to this.
- the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
- the time interval for example, the number of symbols
- the transport block, code block, code word, etc. may be shorter than the TTI.
- one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- the resource block may be composed of one or a plurality of resource elements (Resource Element (RE)).
- RE Resource Element
- 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
- the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), and the like.
- the RRC signaling may be called an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like.
- MAC signaling may be notified using, for example, a MAC control element (MAC Control Element (CE)).
- CE MAC Control Element
- the determination may be made by a value represented by 1 bit (0 or 1), or by a boolean value represented by true or false. , May be done by numerical comparison (eg, comparison with a given value).
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- a transmission medium For example, a website where the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
- wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
- wireless technology infrared, microwave, etc.
- Network may mean a device (eg, a base station) included in the network.
- precoding "precoding weight”
- QCL Quality of Co-Co-Location
- TCI state Transmission Configuration Indication state
- space "Spatial relation”, “spatial domain filter”, “transmission power”, “phase rotation”, "antenna port”, “antenna port group”, “layer”, “number of layers”
- Terms such as “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angle”, "antenna”, “antenna element", “panel” are compatible.
- Base station BS
- radio base station fixed station
- NodeB NodeB
- eNB eNodeB
- gNB gNodeB
- Access point "Transmission point (Transmission Point (TP))
- RP Reception point
- TRP Transmission / Reception Point
- Panel , "Cell”, “sector”, “cell group”, “carrier”, “component carrier” and the like
- Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
- the base station can accommodate one or more (for example, three) cells.
- a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio)).
- Communication services can also be provided by Head (RRH))).
- RRH Head
- the term "cell” or “sector” refers to part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage.
- Mobile stations include subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals. , Handset, user agent, mobile client, client or some other suitable term.
- At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, or the like.
- At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
- the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
- at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
- at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.
- IoT Internet of Things
- the user terminal in the present disclosure may be read as a base station.
- the base station 10 may have the functions of the user terminal 20 described above.
- the operation performed by the base station may be performed by its upper node (upper node) in some cases.
- various operations performed for communication with a terminal are performed by the base station and one or more network nodes other than the base station (for example,).
- Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. can be considered, but it is not limited to these), or it is clear that it can be performed by a combination thereof.
- judgment (decision) is regarded as “judgment (decision)” such as solving, selecting, selecting, establishing, and comparing. May be good. That is, “judgment (decision)” may be regarded as “judgment (decision)” of some action.
- connection are any direct or indirect connection or connection between two or more elements. Means, and can include the presence of one or more intermediate elements between two elements that are “connected” or “joined” to each other.
- the connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection” may be read as "access”.
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Abstract
Description
NRでは、送信設定指示状態(Transmission Configuration Indication state(TCI状態))に基づいて、信号及びチャネルの少なくとも一方(信号/チャネルと表記されてもよい。本開示において、「A/B」は同様に、「A及びBの少なくとも一方」で読み替えられてもよい)のUEにおける受信処理(例えば、受信、デマッピング、復調、復号の少なくとも1つ)、送信処理(例えば、送信、マッピング、プリコーディング、変調、符号化の少なくとも1つ)などを制御することが検討されている。
・QCLタイプA:ドップラーシフト、ドップラースプレッド、平均遅延及び遅延スプレッド、
・QCLタイプB:ドップラーシフト及びドップラースプレッド、
・QCLタイプC:ドップラーシフト及び平均遅延、
・QCLタイプD:空間受信パラメータ。
PDCCH(又はPDCCHに関連するDMRSアンテナポート)及び所定のDL-RSとのQCLに関する情報は、PDCCHのためのTCI状態などと呼ばれてもよい。
PDSCH(又はPDSCHに関連するDMRSアンテナポート)及び所定のDL-RSとのQCLに関する情報は、PDSCHのためのTCI状態などと呼ばれてもよい。
UEは、上位レイヤシグナリング(例えば、Radio Resource Control(RRC)シグナリング)によって、PUCCH送信に用いられるパラメータ(PUCCH設定情報、PUCCH-Config)を設定されてもよい。PUCCH設定情報は、キャリア(セル、コンポーネントキャリア(Component Carrier(CC))ともいう)内の部分的な帯域(例えば、上り帯域幅部分(Bandwidth Part(BWP)))毎に設定されてもよい。
UEは、測定用参照信号(例えば、サウンディング参照信号(Sounding Reference Signal(SRS)))の送信に用いられる情報(SRS設定情報、例えば、RRC制御要素の「SRS-Config」内のパラメータ)を受信してもよい。
Rel.16 NRでは、ULのビーム指示方法として、UL TCI状態を用いることが検討されている。UL TCI状態の通知は、UEのDLビーム(DL TCI状態)の通知に類似する。なお、DL TCI状態は、PDCCH/PDSCHのためのTCI状態と互いに読み換えられてもよい。
前述のように、PDCCH又はPDSCHに対し、UEは、RRCによって複数のTCI状態を設定され、MAC CE又はDCIによって複数のTCI状態の1つを指示されてもよい。したがって、RRC再設定(reconfiguration)を行うことなく、迅速にビームを切り替えることができる。
UEは、ある条件の下においてデフォルト空間関係に従って特定UL送信を行ってもよい。
本開示において、デフォルト空間関係、デフォルト空間関係想定、特定DL送信のTCI状態又はQCL想定、特定DL送信のTCI状態又はQCL想定によって与えられるQCLパラメータに関するRS、特定DL送信のTCI状態又はQCL想定におけるQCLタイプDのRS、参照UL送信の空間関係、特定RS、特定DL RS、第1参照信号、は互いに読み替えられてもよい。
ある条件を満たす場合、UEは、デフォルト空間関係に従ってPUSCHを送信してもよい。
前述のデフォルト空間関係(デフォルトTCI状態)における最新のスロットは、次のいずれかであってもよい。
最新のスロットは、特定UL送信の開始シンボルに対する(又は当該シンボルの前の)最新のスロットであってもよい。
最新のスロットは、特定UL送信に対応するDL送信の最初又は最後のシンボルに対する(当該シンボルより前の)最新のスロットであってもよい。例えば、特定UL送信がPUCCHである場合、特定UL送信に対応するDL送信は、PUCCHに対応するPDSCH(PUCCH上で運ばれるHARQ-ACKに対応するPDSCH)であってもよい。
特定DL送信に対して1つのみのTCI状態がアクティベートされてもよい(特定DL送信に対して1つのみのアクティブTCI状態が設定又は指示又は指定されてもよい)。特定DL送信は、PDCCHであってもよいし、PDSCHであってもよい。もしUEが特定DL送信に対して1つのみのTCI状態をアクティベートされた場合、当該UEは、特定UL送信に対してデフォルト空間関係を用いてもよい。
もし特定DL送信に対して1つのみのTCI状態がアクティベートされた場合、デフォルト空間関係はその1つのアクティブTCI状態であってもよい(UEは、デフォルト空間関係として当該アクティブTCI状態を用いてもよい)。
もし特定DL送信に対して1つのみのTCI状態のみがアクティベートされた場合、デフォルト空間関係はパスロス参照RS(複数のパスロス参照RSがある場合はその中の1つ)であってもよい(UEは、デフォルト空間関係としてパスロス参照RSを用いてもよい)。
条件は、特定UL送信が1つのTRP(シングルTRP、S-TRP)へ送信されることであってもよい。
条件は、特定UL送信のセルに対してCORESETが設定されることであってもよい。デフォルト空間関係は、前述のCORESETのTCI状態(例えば、デフォルトTCI状態)であってもよい。
特定UL送信のセルに対してCORESETが設定されるか否かに関わらず、UEは、特定UL送信に対してデフォルト空間関係を用いてもよい。
条件は、特定UL送信がPUSCHであり、あるセルのPUSCHがDCIフォーマット0_0によってスケジュールされ、且つ当該セルに対してPUCCHリソースが設定されないことであってもよい。
以下、本開示の一実施形態に係る無線通信システムの構成について説明する。この無線通信システムでは、本開示の上記各実施形態に係る無線通信方法のいずれか又はこれらの組み合わせを用いて通信が行われる。
図4は、一実施形態に係る基地局の構成の一例を示す図である。基地局10は、制御部110、送受信部120、送受信アンテナ130及び伝送路インターフェース(transmission line interface)140を備えている。なお、制御部110、送受信部120及び送受信アンテナ130及び伝送路インターフェース140は、それぞれ1つ以上が備えられてもよい。
図5は、一実施形態に係るユーザ端末の構成の一例を示す図である。ユーザ端末20は、制御部210、送受信部220及び送受信アンテナ230を備えている。なお、制御部210、送受信部220及び送受信アンテナ230は、それぞれ1つ以上が備えられてもよい。
なお、上記実施形態の説明に用いたブロック図は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。
なお、本開示において説明した用語及び本開示の理解に必要な用語については、同一の又は類似する意味を有する用語と置き換えてもよい。例えば、チャネル、シンボル及び信号(シグナル又はシグナリング)は、互いに読み替えられてもよい。また、信号はメッセージであってもよい。参照信号(reference signal)は、RSと略称することもでき、適用される標準によってパイロット(Pilot)、パイロット信号などと呼ばれてもよい。また、コンポーネントキャリア(Component Carrier(CC))は、セル、周波数キャリア、キャリア周波数などと呼ばれてもよい。
Claims (4)
- 特定UL送信のための空間関係が設定されない場合、前記特定UL送信の開始シンボル又は前記特定UL送信に対応するDL送信の最初又は最後のシンボルに対する最新のスロットに関する疑似コロケーション(QCL)パラメータと、特定DL送信に対して1つのみの送信設定指示(TCI)状態がアクティベートされる場合の前記TCI状態又はパスロス参照用参照信号と、の1つの特定空間関係を決定する制御部と、
前記特定空間関係に従って前記特定UL送信を行う送信部と、を有する端末。 - 前記特定UL送信が1つの送受信ポイントへ送信される場合、又は前記特定UL送信のセルに対して制御リソースセット(CORESET)が設定される場合、又は前記特定UL送信がバンド内キャリアアグリゲーション内のセルにおいて送信される場合、又は前記特定UL送信が空間関係の指示を含まないDL制御情報フォーマットによってスケジュールされ且つ前記特定UL送信のセルに対して物理DL制御チャネルリソースが設定されない場合、前記制御部は、前記特定空間関係を決定する、請求項1に記載の端末。
- 前記特定空間関係は、前記スロットにおける最低のCORESET IDを有するCORESETに関するTCI状態である、請求項1又は請求項2に記載の端末。
- 特定UL送信のための空間関係が設定されない場合、前記特定UL送信の開始シンボル又は前記特定UL送信に対応するDL送信の最初又は最後のシンボルに対する最新のスロットに関する疑似コロケーション(QCL)パラメータと、特定DL送信に対して1つのみの送信設定指示(TCI)状態がアクティベートされる場合の前記TCI状態又はパスロス参照用参照信号と、の1つの特定空間関係を決定するステップと、
前記特定空間関係に従って前記特定UL送信を行うステップと、を有する端末の無線通信方法。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022185549A1 (ja) * | 2021-03-05 | 2022-09-09 | 株式会社Nttドコモ | 通信装置及び通信方法 |
WO2023196730A1 (en) * | 2022-04-07 | 2023-10-12 | Qualcomm Incorporated | Aspects for cross-link interference measurement |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110831189B (zh) * | 2018-08-11 | 2022-05-10 | 华为技术有限公司 | 链路失败恢复方法及相关设备 |
WO2021029754A1 (ko) * | 2019-08-15 | 2021-02-18 | 엘지전자 주식회사 | 무선 통신 시스템에서 물리 하향링크 공유 채널을 송수신하는 방법 및 이를 위한 장치 |
US20230114662A1 (en) * | 2020-03-27 | 2023-04-13 | Ntt Docomo, Inc. | Terminal, radio communication method, and base station |
US11863281B2 (en) * | 2020-04-30 | 2024-01-02 | Qualcomm Incorporated | Methods and apparatus to facilitate cross-carrier beam association |
CN116114208A (zh) * | 2020-08-05 | 2023-05-12 | 联想(北京)有限公司 | 用于上行链路信号传输的方法及装置 |
CN116671048A (zh) * | 2020-08-26 | 2023-08-29 | 欧芬诺有限责任公司 | 控制信道重复中的默认规则 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019158303A (ja) | 2018-03-16 | 2019-09-19 | 孝 穴井 | 屋内と屋外のペア冷蔵庫 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9661625B2 (en) * | 2012-10-04 | 2017-05-23 | Lg Electronics Inc. | Method and apparatus for transreceiving downlink signal by considering antenna port relationship in wireless communication system |
JP6100829B2 (ja) * | 2015-05-14 | 2017-03-22 | 株式会社Nttドコモ | ユーザ端末、無線基地局及び無線通信方法 |
WO2018025949A1 (ja) * | 2016-08-04 | 2018-02-08 | 株式会社Nttドコモ | ユーザ端末及び無線通信方法 |
US10341998B2 (en) * | 2017-03-23 | 2019-07-02 | Sharp Laboratories Of America, Inc. | User equipments, base stations and methods |
US10554262B2 (en) * | 2017-05-12 | 2020-02-04 | Qualcomm Incorporated | Cross-sub-band quasi co-location signaling |
WO2019159244A1 (ja) * | 2018-02-14 | 2019-08-22 | 株式会社Nttドコモ | 無線基地局及び無線通信方法 |
CN111245488A (zh) * | 2018-11-28 | 2020-06-05 | 索尼公司 | 电子设备、通信方法和存储介质 |
CN113840380A (zh) * | 2020-06-24 | 2021-12-24 | 华为技术有限公司 | 一种波束指示方法及通信装置 |
CN116368766A (zh) * | 2020-10-19 | 2023-06-30 | 华为技术有限公司 | 一种无线通信的方法与装置 |
-
2020
- 2020-08-13 EP EP20856561.4A patent/EP4024937A1/en not_active Withdrawn
- 2020-08-13 US US17/638,582 patent/US20220295304A1/en active Pending
- 2020-08-13 CN CN202080072336.2A patent/CN114557002B/zh active Active
- 2020-08-13 JP JP2021542734A patent/JP7379503B2/ja active Active
- 2020-08-13 WO PCT/JP2020/030792 patent/WO2021039423A1/ja unknown
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019158303A (ja) | 2018-03-16 | 2019-09-19 | 孝 穴井 | 屋内と屋外のペア冷蔵庫 |
Non-Patent Citations (5)
Title |
---|
"Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8", 3GPP TS 36.300, April 2010 (2010-04-01) |
NTT DOCOMO, INC.: "Discussion on multi-beam enhancement", 3GPP TSG RAN WG1 #98B RI-1911185, 4 October 2019 (2019-10-04), XP051789957 * |
NTT DOCOMO, INC.: "Discussion on multi-beam enhancement[ online", 3GPP TSG RAN WG1 #98 RI-1909202, 17 August 2019 (2019-08-17), XP051765807 * |
QUALCOMM INCORPORATED: "Enhancements on Multi-beam Operation", 3GPP TSG RAN WG1 #98 RI-1909273, 17 August 2019 (2019-08-17), XP051765878 * |
ZTE: "Enhancements on multi-beam operation", 3GPP TSG RAN WG1 #98 R1-1908192, 17 August 2019 (2019-08-17), XP051764811 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022185549A1 (ja) * | 2021-03-05 | 2022-09-09 | 株式会社Nttドコモ | 通信装置及び通信方法 |
WO2023196730A1 (en) * | 2022-04-07 | 2023-10-12 | Qualcomm Incorporated | Aspects for cross-link interference measurement |
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