WO2022079903A1 - 端末、無線通信方法及び基地局 - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
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- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
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- 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
- This disclosure relates to terminals, wireless communication methods and base stations in next-generation mobile communication systems.
- LTE Long Term Evolution
- UMTS Universal Mobile Telecommunications System
- 3GPP Rel.10-14 LTE-Advanced (3GPP Rel.10-14) has been specified for the purpose of further increasing the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).
- a successor system to LTE for example, 5th generation mobile communication system (5G), 5G + (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 or later, etc.
- 5G 5th generation mobile communication system
- 6G 6th generation mobile communication system
- NR New Radio
- a user terminal (terminal, user terminal, User Equipment (UE)) is a pseudo-colocation (Quasi-Co-Location (QCL)) information (QCL assumption / Transmission Configuration Indication (QCL assumption / Transmission Configuration Indication). Controlling transmission / reception processing based on TCI) state / spatial relationship) is being studied.
- QCL Quad-Co-Location
- the information about QCL is not clear. If the information about the QCL is not clear, it may lead to a decrease in communication quality, a decrease in throughput, and the like.
- one of the purposes of this disclosure is to provide a terminal, a wireless communication method, and a base station that appropriately determine information regarding the QCL.
- the terminal receives setting information indicating a plurality of transmission setting instruction (TCI) states applicable to a plurality of types of channels, and an instruction indicating one of the plurality of TCI states.
- a receiver for receiving information and a plurality of power control parameters are associated with the plurality of TCI states, respectively, and the one TCI state is applied to the plurality of types of channels, and among the plurality of power control parameters, the plurality of power control parameters are applied. It has a control unit that applies one power control parameter corresponding to the one TCI state to the uplink channel among the plurality of types of channels.
- information regarding the QCL can be appropriately determined.
- FIG. 1 is a diagram showing an example of a common beam for both DL and UL.
- FIG. 2 is a diagram showing an example of a common beam for DL and a common beam for UL.
- FIG. 3 is a diagram showing an example of use case 0.
- FIG. 4 is a diagram showing an example of use case 1.
- FIG. 5 is a diagram showing an example of use case 2.
- 6A and 6B are diagrams showing an example of the update timing of the common beam.
- FIG. 7 is a diagram showing an example of simultaneous beam update across a plurality of CCs.
- FIG. 8 is a diagram showing an example of a configurable QCL setting.
- FIG. 9 is a diagram showing an example of a QCL setting that cannot be set.
- FIG. 10 is a diagram showing an example of Aspect 1-1.
- FIG. 11 is a diagram showing another example of the embodiment 1-1.
- FIG. 12 is a diagram showing an example of Aspect 1-2.
- FIG. 13 is a diagram showing another example of the aspect 1-2.
- FIG. 14 is a diagram showing an example of Aspect 1-2-2.
- FIG. 15 is a diagram showing an example of the second embodiment.
- FIG. 16 is a diagram showing an example of aspect 3-1.
- FIG. 17 is a diagram showing an example of the association between the common TCI setting and the TPC-related parameter setting according to the aspect 3-1.
- FIG. 18 is a diagram showing an example of aspect 3-2.
- FIG. 19 is a diagram showing an example of the common TCI setting according to the aspect 3-2.
- FIG. 20 is a diagram showing an example of the fifth embodiment.
- FIG. 21 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
- FIG. 22 is a diagram showing an example of the configuration of the base station according to the embodiment.
- FIG. 23 is a diagram showing an example of the configuration of the user terminal according to the embodiment.
- FIG. 24 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
- reception processing for example, reception, demapping, demodulation, etc.
- transmission processing e.g., at least one of transmission, mapping, precoding, modulation, and coding
- the TCI state may represent what applies to the downlink signal / channel.
- the equivalent of the TCI state applied to the uplink signal / channel may be expressed as a spatial relation.
- the TCI state is information related to signal / channel pseudo-collocation (Quasi-Co-Location (QCL)), and may be called spatial reception parameters, spatial relation information, or the like.
- QCL Quality of Service
- the TCI state may be set in the UE per channel or per signal.
- QCL is an index showing the statistical properties of signals / channels. For example, when one signal / channel and another signal / channel have a QCL relationship, Doppler shift, Doppler spread, and average delay are performed between these different signals / channels. ), Delay spread, and spatial parameter (for example, spatial Rx parameter) can be assumed to be the same (QCL for at least one of these). You may.
- the spatial reception parameter may correspond to the received beam of the UE (for example, the received analog beam), or the beam may be specified based on the spatial QCL.
- the QCL (or at least one element of the QCL) in the present disclosure may be read as sQCL (spatial QCL).
- QCL types A plurality of types (QCL types) may be specified for the QCL.
- QCL types AD QCL types with different parameters (or parameter sets) that can be assumed to be the same may be provided, and the parameters (may be referred to as QCL parameters) are shown below: QCL type A (QCL-A): Doppler shift, Doppler spread, average delay and delay spread, -QCL type B (QCL-B): Doppler shift and Doppler spread, QCL type C (QCL-C): Doppler shift and average delay, -QCL type D (QCL-D): Spatial reception parameter.
- QCL-A Doppler shift, Doppler spread, average delay and delay spread
- -QCL type B QCL type B
- QCL type C QCL type C
- QCL-D Spatial reception parameter.
- the UE assumes that one control resource set (Control Resource Set (CORESET)) has a specific QCL (eg, QCL type D) relationship with another CORESET, channel or reference signal. It may be called a QCL assumption.
- CORESET Control Resource Set
- QCL QCL type D
- the UE may determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of the signal / channel based on the TCI state of the signal / channel or the QCL assumption.
- the TCI state may be, for example, information about the QCL of the target channel (in other words, the reference signal for the channel (Reference Signal (RS))) and another signal (for example, another RS). ..
- the TCI state may be set (instructed) by higher layer signaling, physical layer signaling, or a combination thereof.
- the physical layer signaling may be, for example, downlink control information (DCI).
- DCI downlink control information
- the channels for which the TCI state or spatial relationship is set are, for example, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), and an uplink shared channel (Physical Uplink Shared). It may be at least one of a Channel (PUSCH)) and an uplink control channel (Physical Uplink Control Channel (PUCCH)).
- PDSCH Physical Downlink Shared Channel
- PDCH Downlink Control Channel
- PUSCH Physical Uplink Control Channel
- PUCCH Physical Uplink Control Channel
- the RS having a QCL relationship with the channel is, for example, a synchronization signal block (Synchronization Signal Block (SSB)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and a measurement reference signal (Sounding). It may be at least one of Reference Signal (SRS)), CSI-RS for tracking (also referred to as Tracking Reference Signal (TRS)), and reference signal for QCL detection (also referred to as QRS).
- SSB Synchronization Signal Block
- CSI-RS Channel State Information Reference Signal
- Sounding Sounding
- SRS Reference Signal
- TRS Tracking Reference Signal
- QRS reference signal for QCL detection
- the SSB is a signal block including at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)), a secondary synchronization signal (Secondary Synchronization Signal (SSS)), and a broadcast channel (Physical Broadcast Channel (PBCH)).
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- PBCH Physical Broadcast Channel
- the SSB may be referred to as an SS / PBCH block.
- the RS of the QCL type X in the TCI state may mean an RS having a relationship between a certain channel / signal (DMRS) and the QCL type X, and this RS is called the QCL source of the QCL type X in the TCI state. You may.
- DMRS channel / signal
- the path loss PL b, f, c (q d ) [dB] in the transmission power control of PUSCH, PUCCH, and SRS is a reference signal (RS,) for the downlink BWP associated with the active UL BWP b of the carrier f of the serving cell c.
- RS reference signal
- the path loss reference RS, path loss (PL) -RS, index q d , RS used for path loss calculation, and RS resource used for path loss calculation may be read as each other.
- calculations, estimates, measurements, and tracks may be read interchangeably.
- the path loss measurement based on L1-RSRP may be applied. Even if the upper layer filter RSRP is used for path loss measurement and L1-RSRP is used for path loss measurement before the upper layer filter RSRP is applied at the available timing after MAC CE for path loss RS update. good. At the available timing after the MAC CE for updating the path loss RS, the upper layer filter RSRP may be used for the path loss measurement, and the upper layer filter RSRP of the previous path loss RS may be used before that timing. .. Rel. Similar to the operation of 15, the upper layer filter RSRP is used for the path loss measurement, and the UE may track all the path loss RS candidates set by the RRC.
- the maximum number of path loss RSs that can be set by the RRC may depend on the UE capability. When the maximum number of path loss RSs that can be set by RRC is X, path loss RS candidates of X or less may be set by RRC, and path loss RS may be selected by MAC CE from the set path loss RS candidates.
- the maximum number of path loss RSs that can be set by RRC may be 4, 8, 16, 64, or the like.
- the upper layer filter RSRP, the filtered RSRP, and the layer 3 filter RSRP may be read as each other.
- DL DCI (PDSCH) is set both when the TCI information in DCI (upper layer parameter TCI-PresentInDCI) is set to "enabled” and when the TCI information in DCI is not set.
- TCI-PresentInDCI TCI information in DCI
- Non-cross-carrier scheduling if the time offset between the receipt of the scheduled DCI) and the corresponding PDSCH (PDSCH scheduled by the DCI) is less than the threshold (timeDurationForQCL) (applicable condition, first condition).
- the TCI state (default TCI state) of the PDSCH may be the TCI state of the lowest CORESET ID in the latest slot in the active DL BWP of the CC (of the specific UL signal). Otherwise, the PDSCH TCI state (default TCI state) may be the TCI state of the PDSCH's lowest TCI state ID in the active DL BWP of the scheduled CC.
- an individual MAC CE of a MAC CE for activation / deactivation related to PUCCH space and a MAC CE for activation / deactivation related to SRS space is required.
- the PUSCH spatial relationship follows the SRS spatial relationship.
- At least one of the MAC CE for activation / deactivation related to PUCCH space and the MAC CE for activation / deactivation related to SRS space may not be used.
- both the spatial relationship for PUCCH and PL-RS are not set in FR2 (applicable condition, second condition), the spatial relationship for PUCCH and the default assumption of PL-RS (default spatial relationship and default PL-RS). Is applied. If both the spatial relationship and PL-RS for SRS (SRS resource for SRS or SRS resource corresponding to SRI in DCI format 0_1 for scheduling PUSCH) are not set in FR2 (applicable condition, second condition). Spatial relations and PL-RS default assumptions (default spatial relations and default PL-RS) are applied to PUSCH and SRS scheduled by DCI format 0_1.
- the default spatial relationship and default PL-RS are based on the TCI state or QCL assumption of the CORESET having the lowest CORESET ID in the active DL BWP. There may be. If CORESET is not set in the active DL BWP on the CC, the default spatial relationship and the default PL-RS may be the active TCI state with the lowest ID of the PDSCH in the active DL BWP.
- the spatial relationship of the PUSCH scheduled by DCI format 0_0 follows the spatial relationship of the PUCCH resource having the lowest PUCCH resource ID among the active spatial relationships of the PUCCH on the same CC.
- the network needs to update the PUCCH spatial relationships on all SCells, even if the PUCCHs are not transmitted on the SCells.
- the application condition of the default spatial relationship for SRS / default PL-RS may include that the default beam path loss enablement information element for SRS (upper layer parameter enableDefaultBeamPlForSRS) is effectively set.
- the application condition of the default spatial relationship / default PL-RS for PUCCH may include that the default beam path loss enablement information element for PUCCH (upper layer parameter enableDefaultBeamPlForPUCCH) is effectively set.
- the application condition of the default spatial relationship / default PL-RS for PUSCH scheduled by DCI format 0_0 is that the default beam path loss enablement information element for PUSCH scheduled by DCI format 0_0 (upper layer parameter enableDefaultBeamPlForPUSCH0_0) is effectively set. May include that.
- the above thresholds are the QCL time duration, "timeDurationForQCL”, “Threshold”, “Threshold for offset between a DCI indicating a TCI state and a PDSCH scheduled by the DCI”, “Threshold-Sched-Offset”, and schedule. It may be called an offset threshold value, a scheduling offset threshold value, or the like.
- UL and DL channels can be controlled by a common framework.
- the unified TCI framework is Rel. Rather than defining the TCI state or spatial relationship for each channel as in 15, a common beam may be indicated and applied to all UL and DL channels, or a common beam for UL may be applied to UL. It may be applied to all channels and a common beam for DL may be applied to all channels of DL.
- the UE may assume the same TCI state (joint TCI state, joint TCI state pool, joint common TCI state pool) for UL and DL.
- RRC sets a plurality of TCI states (joint common TCI state pool) for both DL and UL.
- Each of the plurality of TCI states may be a QCL type A / D RS.
- SSB, CSI-RS, or SRS may be set as the QCL type A / D RS.
- MAC CE may activate a part of a plurality of set TCI states.
- the DCI may indicate at least one of the activated TCI states.
- UL and DL default beams may be aligned by beam management based on MAC CE (MAC CE level beam instruction).
- the PDSCH default TCI state may be updated to match the default UL beam (spatial relationship).
- the common beam / unified TCI state may be indicated from the same TCI state pool (joint common TCI state pool) for both UL and DL by beam management (DCI level beam instruction) based on DCI.
- M TCI states may be activated by MAC CE.
- UL / DL DCI may select one from M active TCI states.
- the selected TCI state may be applied to both UL and DL channels / RS.
- the UE has different TCI states for UL and DL (separate TCI state, separate TCI state pool, UL separate TCI state pool and DL separate TCI state pool, separate common TCI state pool, UL common TCI state pool and DL common. TCI state pool) may be assumed.
- the RRC may set a plurality of TCI states (pools) for each of the UL and DL channels.
- MAC CE may select (activate) one or more (for example, a plurality) TCI states (sets) for each of UL and DL channels. MAC CE may activate two sets of TCI states.
- the DL DCI may select (instruct) one or more (for example, one) TCI states. This TCI state may be applied to one or more DL channels.
- the DL channel may be PDCCH / PDSCH / CSI-RS.
- the UE is Rel.
- the operation of the TCI state of 16 (TCI framework) may be used to determine the TCI state of each channel / RS of the DL.
- UL DCI may select (instruct) one or more (for example, one) TCI states. This TCI state may be applied to one or more UL channels.
- the UL channel may be PUSCH / SRS / PUCCH.
- the UL of the panel # 1 receives the MPE problem, and the UE uses the panel # 2 for the UL.
- the distance between the UE and TRP (cell, base station) # 1 is longer than the distance between the UE and TRP # 2.
- the L1-RSRP of the panel # 1 is higher than the L1-RSRP of the panel # 2
- the UL transmission power of the panel # 2 is higher than the UL transmission power of the panel # 1.
- the UE uses panel # 1 for DL from TRP # 1 and panel # 2 for UL to TRP # 2.
- the L1-RSRP of the panel # 1 is higher than the L1-RSRP of the panel # 2, and the UL load of the panel # 2 is lower than the UL load of the panel # 1.
- the UE uses panel # 1 for DL from TRP # 1 and panel # 2 for UL to TRP # 2.
- HST high speed train
- the common beam may be different.
- the UE may be provided with a multi-panel for FR2.
- the common beam for each UE panel may be different.
- the UE is Rel. Joint TCI based on the 15/16 DL TCI framework may be supported.
- the TCI may include a TCI state containing at least one source RS that provides a reference (UE assumption) for at least one determination of the QCL and spatial filter.
- the UE uses a joint TCI (joint TCI pool) containing references to both the DL beam and the UL beam, and the UE uses one separate TCI (pool) for DL and one separate TCI (pool) for UL. Is being considered.
- joint TCI joint TCI pool
- the UL TCI state is obtained from the same pool as the DL TCI state and that the UL TCI state is obtained from a pool different from the DL TCI state.
- the active TCI pools for UL and DL may be set / activated by RRC / MAC CE.
- the active TCI pool common to UL and DL may be set / activated by RRC / MAC CE.
- the TCI field in the DL DCI may be reused or a new field in the DL DCI (for example, a unified TCI field) may be used for the DCI instruction of the common beam (common TCI state).
- DL DCI, PDSCH scheduling DCI, and DCI formats 1-11, 1_2 may be read as each other.
- a new field (for example, a unified TCI field) in UL DCI may be used for the DCI instruction of the common beam (common TCI state).
- UL DCI, DCI for PUSCH scheduling, and DCI formats 0_1 and 0_2 may be read as each other.
- one MAC CE can update the beam indexes (TCI states) of multiple CCs.
- the UE can set up to two applicable CC lists (eg, applicable-CC-list) by RRC.
- the two applicable CC lists may correspond to an in-band CA in FR1 and an in-band CA in FR2, respectively.
- PDCCH TCI status activation MAC CE activates the TCI status associated with the same CORESET ID on all BWP / CCs in the applicable CC list.
- Activation of PDSCH TCI status MAC CE activates the TCI status on all BWP / CCs in the applicable CC list.
- A-SRS / SP-SRS spatial relationship activation MAC CE activates the spatial relationship associated with the same SRS resource ID on all BWP / CCs in the applicable CC list.
- the UE is set with an applicable CC list showing CC # 0, # 1, # 2, # 3 and a list showing 64 TCI states for CORESET or PDSCH of each CC. ..
- the corresponding TCI state is activated at CC # 1, # 2, and # 3.
- the UE may be based on the following procedure A.
- Procedure A The UE issues an activation command to map up to eight TCI states to the code points of the DCI field (TCI field) within one CC / DL BWP or one set of CC / BWP. Receive. If one set of TCI status IDs is activated for one set of CC / DL BWP, then the applicable list of CCs is determined by the CC indicated in the activation command and the same TCI status. The set applies to all DL BWPs in the indicated CC.
- TCI state IDs can be activated for one set of CC / DL BWP.
- the UE may be based on the following procedure B.
- Procedure B If the UE lists up to two cells for simultaneous TCI state activation with a simultaneous TCI update list (at least one of simultaneousTCI-UpdateList-r16 and simulatedTCI-UpdateListSecond-r16), a simultaneous TCI cell list (simultaneousTCI-).
- a simultaneous TCI cell list When provided by CellList), the UE has an index p in all configured DL BWPs of all configured cells in one list determined from the serving cell index provided by the MAC CE command.
- CORESET apply the antenna port quasi co-location (QCL) provided by the TCI state with the same activated TCI state ID value.
- QCL quasi co-location
- a simultaneous TCI cell list can be provided for simultaneous TCI state activation.
- the UE may be based on the following procedure C.
- the spatial relation information (spatialRelationInfo) for the SP or AP-SRS resource set by the SRS resource information element (upper layer parameter SRS-Resource) is activated / updated by MAC CE. If so, then the CC's applicable list is indicated by the concurrent spatial update list (upper layer parameter simulatedeousSpatial-UpdateList-r16 or simulatedaneousSpatial-UpdateListSecond-r16) and the same SRS resource in all BWPs within the indicated CC.
- the spatial relationship information is applied to the SP or AP-SRS resource having the ID. Only if the UE is not provided with different values for the CORESETPoolIndex in the CORESET information element (ControlResourceSet) and is not provided with at least one TCI code point that maps to two TCI states.
- the spatial relation information (spatialRelationInfo) for the SP or AP-SRS resource set by the SRS resource information element (upper layer parameter SRS-Resource) is activated / updated by MAC CE. Ru.
- the simultaneous TCI cell list (simultaneousTCI-CellList) and the simultaneous TCI update list (at least one of simultaneousTCI-UpdateList1-r16 and simulatedTCI-UpdateList2-r16) are serving cells whose TCI relationship can be updated simultaneously using MAC CE. Is a list of. simultaneousTCI-UpdateList1-r16 and simulatedTCI-UpdateList2-r16 do not contain the same serving cell.
- the simultaneous spatial update list (at least one of the upper layer parameters simulatedeousSpatial-UpdatedList1-r16 and simulatedSpatial-UpdatedList2-r16) is a list of serving cells whose spatial relationships can be updated simultaneously using MAC CE.
- simultaneousSpatial-UpdatedList1-r16 and simulatedSpatial-UpdatedList2-r16 do not contain the same serving cell.
- the simultaneous TCI update list and the simultaneous spatial update list are set by RRC
- the CORESET pool index of CORESET is set by RRC
- the TCI code point mapped to the TCI state is indicated by MAC CE.
- Simultaneous beam update across multiple CCs specified in 16 can update multiple BWPs / CCs beams with one MAC CE beam instruction, so the overhead of beam control can be reduced.
- CC # 0, which is a special cell (SpCell) (primary cell (PCell) or primary secondary cell (PSCell)
- # 1, # 2, and # 3 which are SCells
- SSB, TRS, and PDCCH are transmitted in each CC.
- the TRS of each CC has a relationship of SSB of CC # 0 and QCL types C and D
- the PDCCH of each CC has a relationship of TRS of the same CC and QCL types A and D.
- the setting shown in FIG. 9 is not possible. Similar to FIG. 8 above, when the TRS of each CC has a relationship of SSB of CC # 0 and QCL types C and D, and the PDCCH of each CC has a relationship of TRS of the same CC and QCL type A, CC.
- the PDCCHs # 1, 2, and 3 cannot be in a QCL type D relationship with the TRS of CC # 0.
- the RS of QCL type A and the RS of QCL type D need to be the same TRS.
- a TRS of another CC cannot be set as the QCL type A / D RS. Therefore, even when a common TCI pool or a common TCI is set / updated / instructed among a plurality of CCs, the TCI state (TCI state including QCL type A / D RS) is set for each CC. Become.
- the CSI-RS of another CC may be set as the QCL type D RS in the TCI state of the PDCCH / PDSCH of a certain CC. .. Also in this case, it is necessary to set CSI-RS / TRS of the same CC as the QCL type A RS in the TCI state. This indicates that the QCL type A RS has the same parameters that determine channel identification, such as delay spread and average delay, so the values of these parameters are different in different CCs. Due to the possibility.
- the present inventors came up with a method for updating the TCI state.
- a / B / C and “at least one of A, B and C” may be read interchangeably.
- the cell, serving cell, CC, carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, and band may be read as each other.
- the index, the ID, the indicator, and the resource ID may be read as each other.
- support, control, controllable, working, working may be read interchangeably.
- configuration, activate, update, indicate, enable, specify, and select may be read as each other.
- MAC CE and activation / deactivation commands may be read interchangeably.
- the upper layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.
- RRC Radio Resource Control
- MAC Medium Access Control
- RRC, RRC signaling, RRC parameters, higher layers, higher layer parameters, RRC information elements (IE), and RRC messages may be read interchangeably.
- MAC CE MAC Control Element
- PDU MAC Protocol Data Unit
- the broadcast information includes, for example, a master information block (Master Information Block (MIB)), a system information block (System Information Block (SIB)), a minimum system information (Remaining Minimum System Information (RMSI)), and other system information ( Other System Information (OSI)) may be used.
- MIB Master Information Block
- SIB System Information Block
- RMSI Minimum System Information
- OSI Other System Information
- Domain receive filter, UE spatial domain receive filter, UE receive beam, DL beam, DL receive beam, DL precoding, DL precoder, DL-RS, TCI state / QCL assumed QCL type D RS, TCI state / QCL assumed QCL type A RS, spatial relationship, spatial domain transmission filter, UE spatial domain transmission filter, UE transmission beam, UL beam, UL transmission beam, UL precoding, UL precoder, PL-RS may be read as each other.
- the QCL type X-RS, the DL-RS associated with the QCL type X, the DL-RS having the QCL type X, the source of the DL-RS, the SSB, the CSI-RS, and the SRS may be read as each other. good.
- the DL DCI, the DCI that schedules the DL channel (PDSCH), and the DCI format 1_x (x 0, 1, 2, 7) may be read as each other.
- HARQ-ACK information, ACK, and NACK may be read as each other.
- one of the link direction, the downlink (DL), the uplink (UL), UL and the DL may be read as each other.
- pools, sets, groups, lists may be read interchangeably.
- common beam common TCI, common TCI state, unified TCI, unified TCI state, TCI state applicable to DL and UL, TCI state applied to multiple (multiple types) channels / RS, multiple types.
- the TCI states, PL-RS, applicable to the channel / RS may be read interchangeably.
- a plurality of TCI states set by RRC a plurality of TCI states activated by MAC CE, a pool, a TCI state pool, an active TCI state pool, a common TCI state pool, a joint TCI state pool, and a separate TCI state pool.
- UL common TCI status pool, DL common TCI status pool, common TCI status pool set / activated by RRC / MAC CE, and TCI status information may be read as each other.
- CC list serving cell list, CC list in cell group setting (CellGroupConfig), applicable list, simultaneous TCI update list / second simultaneous TCI update list, simulatedTCI-UpdateList1-r16 / simulatedTCI-UpdateList2-r16, simultaneous TCI cell list, simulatedTCI-CellList, simultaneous spatial update list / second simultaneous spatial update list, simulatedSpatial-UpdatedList1-r16 / simulatedSpatial-UpdatedList2-r16, CC set, list set, BWP in set list / CC, all BWP / CC in the configured list, CC indicated by the activation command, CC indicated, CC receiving MAC CE, multiple for at least one update of the TCI state and spatial relationship.
- the information indicating the cell may be read as each other.
- MAC CE and activation command may be read as each other.
- DL TCI, DL common TCI, DL unified TCI, common TCI, and unified TCI may be read as each other.
- UL TCI, UL Common TCI, UL Unified TCI, Common TCI, and Unified TCI may be read interchangeably.
- the joint TCI pool when the joint TCI pool is set, they may be read as each other.
- a separate TCI pool when a separate TCI pool is set, they may be read as each other.
- the joint TCI pool when the joint TCI pool is set, when the TCI pool set for DL and the TCI pool set for UL are common, and when the TCI pool for both DL and UL is set.
- one TCI pool one set of TCI
- the TCI pool set for DL and the TCI pool set for UL are different, the TCI pool for DL (first TCI pool, first TCI pool).
- the TCI pool for DL first TCI pool, first TCI pool.
- a TCI pool for UL second TCI pool, second TCI set
- a TCI pool for DL may be read as each other.
- the TCI pool for DL is set, the TCI pool for UL may be equal to the set TCI pool.
- the channel / RS to which the common TCI is applied may be PDSCH / HARQ-ACK information / PUCCH / PUSCH / CSI-RS / SRS.
- a common TCI pool for each BWP / CC may be set by the upper layer.
- a combination of multiple BWPs / multiple CCs may be notified / set by the upper layer.
- the parameters (CC list) for notifying the combination of multiple BWP / multiple CC are described in Rel. It may be a simultaneous spatial update list of 16 (simultaneousSpatial-UpdatedList-r16 / simulatedSpatial-UpdatedListSecond-r16) or a new parameter.
- the CC list may be a list of CCs. Common TCI instructions may be applied to all CCs / BWPs included in the CC list.
- the CC list is set by RRC, and MAC CE may instruct / select which one or more CCs among the plurality of CCs included in the CC list apply the common TCI instruction. In other words, the CC list may be notified by RRC and MAC CE.
- the UE will have all the BWPs included in the CC list.
- the updated common TCI may be applied to the BWP / CC.
- a separate common TCI pool for UL / DL is set, and the common TCI is updated in at least one BWP / CC among the BWP / CC included in the CC list, and the updated common TCI is the DL common TCI. If so, the UE may apply the updated common TCI to a particular type of channel / RS in the DL of all BWP / CCs contained in the CC list.
- the specific type of channel / RS of the DL may be all channels / RS of the DL, or may be a plurality of types of channels / RS of the DL.
- a separate common TCI pool for UL / DL is set, and the common TCI is updated in at least one BWP / CC among the BWP / CC included in the CC list, and the updated common TCI is the UL common TCI. If so, the UE may apply the updated common TCI to a particular type of channel / RS in the UL of all BWP / CCs contained in the CC list.
- the UL specific type channel / RS may be all UL channels / RS or may be a plurality of UL channel / RS.
- the UE may follow any of the following aspects 1-1 and 1-2.
- the common TCI may be a QCL type A / D RS set in the TCI state.
- a plurality of common TCIs may be set by RRC for each BWP / CC in the CC list.
- a part of a plurality of common TCIs may be activated by MAC CE.
- the TCI field in DL DCI may indicate a common TCI.
- a new field in DL / UL DCI (eg, a unified TCI field) may indicate a common TCI.
- a plurality of common TCIs are set by RRC for each of CC # 1 to # 3, and a CC list indicating CC # 1 to # 3 is set.
- a part of a plurality of common TCIs (a set of active common TCIs) for each of CCs # 1 to # 3 is activated by MAC CE.
- the UE Upon receiving the DCI indicating the common TCI in the set of active common TCIs in CC # 1, the UE applies the indicated common TCI to CCs # 1 to # 3 in the CC list.
- a part of a plurality of common TCIs (set of active common TCIs) set for one BWP / CC in the CC list may be activated by MAC CE.
- the set of active common TCIs for all BWP / CCs in the CC list may be updated to the set of activated common TCIs.
- a plurality of common TCIs are set by RRC for each of CC # 1 to # 3, and a CC list indicating CC # 1 to # 3 is set.
- a MAC CE that activates a part of a plurality of common TCIs (a set of active common TCIs) for CC # 1
- a set of active common TCIs is set from CC # 1 to CC # 3 in the CC list.
- the UE Upon receiving the DCI indicating the common TCI in the set of active common TCIs in CC # 1, the UE applies the indicated common TCI to CCs # 1 to # 3 in the CC list. In this case, it is not necessary to specify the active common TCI for each CC by MAC CE.
- ⁇ Aspect 1-2 If the MAC CE in one BWP / CC included in the CC list indicates a common TCI, the common TCI of all BWP / CCs included in the CC list may be updated to the indicated common TCI.
- the common TCI may be a QCL type A / D RS set in the TCI state.
- a plurality of common TCIs may be set by RRC for each BWP / CC in the CC list.
- a part of a plurality of common TCIs (set of active common TCIs) set for one BWP / CC in the CC list may be activated by MAC CE.
- the UE may apply the activated common TCI to all BWP / CCs in the CC list.
- a plurality of common TCIs are set by RRC for each of CC # 1 to # 3, and a CC list indicating CC # 1 to # 3 is set.
- the UE receives the MAC CE that activates the common TCI of one of the plurality of common TCIs in CC # 1, the UE applies the activated common TCI to CCs # 1 to # 3 in the CC list.
- a plurality of common TCIs are set by RRC for each of CC # 1 to # 3, and a CC list indicating CC # 1 to # 3 is set.
- a MAC CE that activates a part of a plurality of common TCIs (a set of active common TCIs) in CC # 1
- a set of active common TCIs is set from CC # 1 to # 3 in the CC list.
- the MAC CE in one BWP / CC in the CC list activates multiple common TCIs out of multiple common TCIs
- the activated multiple common TCIs (set of active common TCIs) will be in the CC list. It may be applied to all BWP / CC. In this case, the UE may follow at least one of the following aspects 1-2-1 and 1-2-2.
- the operation in this case may be the same as that of aspect 1-1 (FIG. 11).
- the designated common TCI may be applied to the BWP / CC.
- DCI may indicate a common TCI for the BWP / CC.
- a plurality of common TCIs are set by RRC for each of CC # 1 to # 3, and a CC list indicating CC # 1 to # 3 is set.
- CC # 1 when a plurality of common TCIs (sets of active common TCIs) among the plurality of common TCIs set are activated by MAC CE, the UE changes from CC # 1 to # 3 in the CC list. , Apply multiple activated common TCIs.
- the UE Upon receiving the DCI indicating one common TCI in the plurality of active common TCIs in CC # 1, the UE applies the indicated common TCI to the CC # 1.
- the UE Upon receiving the DCI indicating one common TCI in the plurality of active common TCIs in CC # 2, the UE applies the indicated common TCI to the CC # 2. Upon receiving the DCI indicating one common TCI in the plurality of active common TCIs in CC # 3, the UE applies the indicated common TCI to the CC # 3.
- a common TCI pool for each group (set, range) of multiple BWP / multiple CCs may be set by the upper layer.
- the common TCI pool may be set for each band or for each UE.
- a common TCI in a common TCI pool may be instructed for a group of multiple BWPs / multiple CCs.
- the indicated common TCI may be referred to as the TCI state list.
- the TCI status list may show the TCI status of each BWP / CC.
- the number of corresponding BWPs / CCs may differ depending on the TCI status list (group of multiple BWPs / multiple CCs). For example, when a wide beam is used, a common beam (TCI) can be applied to more CCs than when a narrow beam is used.
- TCI common beam
- the number of corresponding BWPs / CCs is equal among a plurality of TCI status lists (multiple BWP / multiple CC groups).
- UE operation becomes simple.
- the UE operation in this case may be the same as the operation of the first embodiment, and Rel. It may be the same as the operation of 16.
- the TCI status list may show the association between BWP / CC and the TCI status.
- the UE may apply the corresponding TCI status to each BWP / CC (common TCI) included in the TCI status list.
- a plurality of common TCIs are set by RRC for CC # 1 to # 3.
- a part of a plurality of common TCIs (a set of active common TCIs) for CCs # 1 to # 3 is activated by MAC CE.
- the UE receives the DCI indicating the TCI status list # 2 in CC # 1.
- TCI status list # 2 shows TCI # 1-2 to # 3-2 associated with CC # 1 to # 3, respectively.
- the UE applies TCI # 1-2 to the common TCI of CC # 1, TCI # 2-2 to the common TCI of CC # 2, and TCI to the common TCI of CC # 3 according to the TCI status list # 2. Apply # 3-2.
- TCI status lists may be set / activated by RRC / MAC CE.
- One of the plurality of TCI status lists (one TCI status list ID) may be indicated by DCI.
- the TPC-related parameter may include at least one of path loss reference RS (PL-RS), P0, ⁇ , and TPC command cumulative value of closed loop TPC.
- PL-RS path loss reference RS
- the TPC-related parameters for PUCCH are notified in the spatial relationship information, and the TPC-related parameters for SRS and PUSCH are notified separately from the spatial relationship information / SRS resource indicator (SRI).
- SRI SRS resource indicator
- the TPC-related parameters when the common TCI is applied to UL may follow at least one of the following aspects 3-1 to 3-4.
- TPC-related parameters when the common TCI is applied to UL may be set separately from the common TCI.
- the TCI state and the TPC-related parameter are set separately for SRS / PUCCH / PUSCH, and the TPC-related parameter is associated with the TCI state.
- the TPC-related parameters may be notified by using the TPC-related parameter notification / setting method in 15/16.
- This TPC-related parameter notification method may be applied to SRS / PUSCH.
- PUCCH is notified of parameters including spatial and TPC related parameters.
- PUCCH may follow any of the following notification methods 1 to 3.
- the TPC-related parameters are notified using the TPC-related parameter notification / setting method (PUCCH spatial relationship information, PUCCH-SpatialRelationInfo) on 15/16. If it is set by / RRC that the common TCI applies to the PUCCH, the UE determines the PUCCH spatial domain filter based on the common TCI without using the PUCCH spatial relationship information. May be (spatial domain parameters / spatial domain settings may be obtained). In other words, the UE may ignore the spatial domain parameters / settings set for the PUCCH spatial relationship information.
- the PUCCH spatial relationship information ID (PUCCH-SpatialRelationInfo-Id, association with the PUCCH spatial relationship information, PUCCH spatial relationship information associated with the common TCI) is notified / set. May be good.
- the association between the common TCI and the TPC-related parameters may be notified / set by the upper layer / DCI.
- the UE When multiple common TCIs (pools), multiple TPC-related parameters, and common TCI and TPC-related parameter associations are notified / set, and the common TCI is specified / selected by RRC / MAC CE / DCI, the UE. May apply the TPC-related parameters corresponding to the indicated / selected common TCI to UL transmission using that common TCI.
- TCI # 1, # 2, ... are set as common TCI
- TPC # 1, TPC # 2, ... are set as TPC-related parameters
- the association between TCI # 2 and TPC # 1 is set.
- TCI # 2 is instructed / selected
- the UE applies TPC # 1 corresponding to TCI # 2 to UL transmission using its common TCI.
- TPC-related parameters may be notified / instructed at the timing when the common TCI is notified / instructed, or at the timing thereafter.
- TPC-related parameters when the common TCI is applied to the UL may be set within the common TCI.
- TPC-related parameters are set in the TCI state for SRS / PUCCH / PUSCH.
- the UE may apply the TPC-related parameters corresponding to the common TCI to UL transmission using the common TCI.
- the TPC-related parameters corresponding to the updated common TCI may be applied to UL transmission using the common TCI.
- the common TCI setting indicates a plurality of common TCIs.
- Each common TCI indicates a common TCI state ID, a QCL type A RS, a QCL type D RS, a PL-RS, and P0 and ⁇ (P0- ⁇ set).
- PL-RS may not be set in the common TCI.
- the UE may determine PL-RS according to the rules.
- the rule may determine the notified common TCI QCL type A RS or QCL type D RS as the PL-RS.
- the notified common TCI QCL type A RS or QCL type D RS may be limited to RSs in the same CC or may include RSs in different CCs.
- the TPC-related parameters of all BWP / CCs in the CC list are updated to the TPC-related parameters corresponding to the common TCI. May be good.
- a combination of multiple BWPs / multiple CCs may be notified / set by the upper layer.
- the parameters (CC list) for notifying the combination of multiple BWP / multiple CC are described in Rel. It may be a simultaneous spatial update list of 16 (simultaneousSpatial-UpdatedList-r16 / simulatedSpatial-UpdatedListSecond-r16) or a new parameter.
- the CC list may be a list of CCs.
- Common TCI (TPC-related parameters) instructions may be applied to all CCs / BWPs included in the CC list. Even if the CC list is set by RRC and MAC CE indicates / selects which one or more CCs among the multiple CCs included in the CC list the common TCI (TPC-related parameter) instruction is applied. good. In other words, the CC list may be notified by RRC and MAC CE.
- the UE will have all the BWPs included in the CC list.
- the TPC-related parameters corresponding to the updated common TCI may be applied to the BWP / CC.
- a separate common TCI pool for UL / DL is set, and the common TCI is updated in at least one BWP / CC among the BWP / CC included in the CC list, and the updated common TCI is the UL common TCI. If so, the UE may apply the TPC-related parameters corresponding to the updated common TCI to a particular type of channel / RS of the UL of all BWP / CCs contained in the CC list.
- the UL specific type channel / RS may be all UL channels / RS or may be a plurality of UL channel / RS.
- Each TCI state (common TCI) in the TCI state list in the second embodiment may be associated with a TPC-related parameter as in the embodiment 3-1.
- Each TCI state (common TCI) in the TCI state list in the second embodiment may include (include, show, contain) TPC-related parameters, as in aspect 3-2.
- an appropriate TPC-related parameter can be applied to the UL transmission.
- the application timing of the common TCI and the application timing of the TPC-related parameters may be the same.
- the UL beam and the PL-RS can be equalized, so that the UE can determine an appropriate transmission power.
- the application timing of the common TCI and the application timing of the TPC-related parameters may be different. Since it may be necessary to measure a plurality of samples for path loss calculation or the like, the application timing of the TPC-related parameters may be later than the application timing of the common TCI. In this case, by updating the UL beam earlier than the PL-RS update, the UL beam control becomes faster and an appropriate UL beam can be used.
- the application timing of the common TCI for the DL channel / RS and the application timing of the common TCI for the UL channel / RS may be different.
- the DL beam may be updated earlier than the UL beam because it is not necessary to consider UL transmission power control. In this case, DL beam control can be faster than UL beam / TPC-related parameter control.
- the application timing of the common TCI for the DL channel / RS and the application timing of the common TCI for the UL channel / RS may be equal.
- the UE needs to form only one beam at the same time for transmission and reception, so that the UE processing load can be suppressed.
- the application timing of the DL common TCI / UL common TCI / TPC related parameters is , At least one of the following timings 1-1 to 1-3 may be followed.
- the DL common TCI application timing and the UL common TCI application timing are time t_1. In other words, the application timing of the DL common TCI and the application timing of the UL common TCI are equal.
- the DL common TCI application timing is time t_1, and the UL common TCI application timing is time t_1. However, t_1 ⁇ t_2. In other words, the application timing of the DL common TCI and the application timing of the UL common TCI are different from each other.
- the application timing of the TPC-related parameters may be equal to the application timing of the UL common TCI (for example, t_2).
- the application timing of the TPC-related parameters may be different from the application timing of the UL common TCI.
- the application timing of the TPC-related parameters may be later than the application timing of the UL common TCI.
- the application timing of the TPC-related parameter is time t_3, and may be t_2 ⁇ t_3.
- the application timing of the DL common TCI / UL common TCI / TPC related parameters may follow at least one of the following timings 2-1 to 2-4.
- the DL common TCI update timing may be time t_1.
- the UL common TCI update timing may be time t_2.
- the application timing of the TPC-related parameters may be equal to the application timing of the UL common TCI (for example, t_2).
- the application timing of the TPC-related parameters may be different from the application timing of the UL common TCI.
- the application timing of the TPC-related parameters may be later than the application timing of the UL common TCI.
- the application timing of the TPC-related parameter is time t_3, and may be t_2 ⁇ t_3.
- the application timing of the DL common TCI / UL common TCI / TPC-related parameters can be appropriately determined.
- the specific field (DCI field) in which the common TCI can be controlled may follow at least one of the following fields 1 to 4.
- the existing TCI field in the DL DCI may be used for the DL TCI instruction, or the common TCI instruction in the UL DCI for the UL TCI instruction.
- New fields for eg, unified TCI fields
- a new field in the DL DCI (eg, the 1st TCI (TCI # 1) field) may be used for the DL TCI indication or the UL TCI instruction. Therefore, a new field in the DL DCI (eg, a second TCI (TCI # 2) field) may be used.
- the size (number of bits) of the specific field may be 0.
- DCI field size (number of bits) according to the number of common TCIs set / activated by the upper layer (RRC / MAC CE) (number of common TCIs in the common TCI pool (set, group, list)) ) May change.
- the size of the specific field may follow at least one of the following size determination methods 1-1 and 1-2.
- the size of the TCI field in the DLDCI may vary depending on the number of common TCIs set / activated by the higher layer.
- Size determination method 1-2 In addition to the sizing method 1-1, even if the size of the new field (for example, the unified TCI field) for the common TCI instruction in UL DCI changes according to the number of common TCIs set / activated by the upper layer. good.
- the size of the specific field may follow at least one of the following size determination methods 2-1 and 2-2.
- the size of the TCI field in the DL DCI may change depending on the number of common TCIs for DL set / activated by the upper layer (the number of common TCIs in the common TCI pool for DL). Depending on the number of UL common TCIs set / activated by the higher layer (the number of common TCIs in the UL common TCI pool), new fields for common TCI instructions in UL DCI (eg, unified TCI fields). The size may change.
- Size determination method 2-2 Depending on the number of DL common TCIs set / activated by the higher layer (the number of common TCIs in the DL common TCI pool), a new field for DL common TCI instructions in the DL DCI (eg, 1st TCI (TCI)). # 1) The size of the field) may change. Depending on the number of UL common TCIs set / activated by the higher layer (the number of common TCIs in the DL common TCI pool), a new field for UL common TCI instructions in UL DCI (eg, 2nd TCI (TCI)). # 2) The size of the field) may change.
- TCI 1st TCI
- the specific field size may be 0.
- the specific field size may be 1.
- the specific field size may be 2.
- the specific field size may be 3.
- the specific field size may be ceil (log2 (N)).
- the specific field size may be notified / set by the upper layer (RRC / MAC CE).
- the specific field size may change according to the number of active common TCIs notified by MAC CE. In this case, since the minimum necessary DCI size can be used according to the state notified by MAC CE, the overhead of DCI can be suppressed.
- the specific field (DCI field) size may change according to the number of active common TCIs.
- the application timing of the specific field size may be after a specific time has elapsed from the end of transmission of ACK to the downlink channel for activation / deactivation of the common TCI.
- the specific time may be a fixed time specified in the specification, may be set by the RRC, or may be reported by the UE as a UE capability. For example, the fixed time may be 3 ms.
- the application timing of the specific field size may be the same as or different from the application timing of the activation / deactivation of the common TCI.
- the UE Before the application timing, the UE may perform blind detection (monitoring) of DCI having a specific field size according to the number of active common TCIs before update. After the application timing, the UE may perform blind detection (monitoring) of the DCI having a specific field size according to the number of active common TCIs after the update.
- the number of active common TCIs before receiving UL DCI is 1, and the specific field size is 0.
- the UE receives the DL DCI, receives the PDSCH scheduled by it, and transmits an ACK for the PDSCH on the PUCCH / PUSCH.
- PDSCH carries MAC CE for activation / deactivation of common TCI. Due to the activation / deactivation of the common TCI, the number of active common TCIs becomes four.
- the application timing of the activation / deactivation of the common TCI and the specific field size based on the activation / deactivation is 3 ms after the end of transmission of the ACK.
- the number of active common TCIs is 1, and the specific field size is 0 bits. After the application timing, the number of active common TCIs is 4 and the specific field size is 2 bits.
- variable specific field size may be limited to a specific DCI format.
- the particular DCI format may be at least one of DCI formats 1_2 and 0_2. Even if the UE cannot decode DCI format 1_2 or 0_2 due to a state mismatch between the base station and the UE, another DCI format 1_2, 0_2, etc. notifies the common TCI (fixed size specific field). This makes it possible to eliminate the state mismatch between the base station and the UE.
- UE capability corresponding to at least one function (feature) in the first to fifth embodiments may be defined. If the UE reports this UE capability, the UE may perform the corresponding function. If the UE reports this UE capability and the upper layer parameters corresponding to this function are set, the UE may perform the corresponding function. Upper layer parameters (RRC information elements) corresponding to this function may be specified. If this higher layer parameter is set, the UE may perform the corresponding function.
- the UE capability may indicate whether the UE supports this feature.
- wireless communication system Wireless communication system
- communication is performed using any one of the wireless communication methods according to each of the above-described embodiments of the present disclosure or a combination thereof.
- FIG. 21 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 may support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between a plurality of Radio Access Technologies (RATs).
- MR-DC is a dual connectivity (E-UTRA-NR Dual Connectivity (EN-DC)) between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR, and a dual connectivity (NR-E) between NR and LTE.
- E-UTRA-NR Dual Connectivity Evolved Universal Terrestrial Radio Access (E-UTRA)
- NR-E dual connectivity
- NE-DC -UTRA Dual Connectivity
- the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)).
- the base station (gNB) of NR is MN
- the base station (eNB) of LTE (E-UTRA) is SN.
- the wireless communication system 1 has dual connectivity between a plurality of base stations in the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )) May be supported.
- a plurality of base stations in the same RAT for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )
- NR-NR Dual Connectivity NR-DC
- gNB NR base stations
- the wireless communication system 1 includes a base station 11 that forms a macrocell C1 having a relatively wide coverage, and a base station 12 (12a-12c) that is arranged in the macrocell C1 and forms a small cell C2 that is narrower than the macrocell 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 connected to at least one of a plurality of base stations 10.
- the user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation (CA)) and dual connectivity (DC) using a plurality of component carriers (Component Carrier (CC)).
- CA Carrier Aggregation
- DC dual connectivity
- CC Component Carrier
- Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)).
- the macrocell C1 may be included in FR1 and the small cell C2 may be included in FR2.
- FR1 may be in a frequency band of 6 GHz or less (sub 6 GHz (sub-6 GHz)), and FR 2 may be in a frequency band higher than 24 GHz (above-24 GHz).
- the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a frequency band higher than FR2.
- the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- the plurality of base stations 10 may be connected by wire (for example, optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (for example, NR communication).
- wire for example, optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.
- NR communication for example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the higher-level station is an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to a relay station (relay) is IAB. It may be called a node.
- IAB Integrated Access Backhaul
- relay station relay station
- the base station 10 may be connected to the core network 30 via another base station 10 or directly.
- the core network 30 may include at least one such as Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).
- EPC Evolved Packet Core
- 5GCN 5G Core Network
- NGC Next Generation Core
- the user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.
- a wireless access method based on Orthogonal Frequency Division Multiplexing may be used.
- OFDM Orthogonal Frequency Division Multiplexing
- DL Downlink
- UL Uplink
- CP-OFDM Cyclic Prefix OFDM
- DFT-s-OFDM Discrete Fourier Transform Spread OFDM
- OFDMA Orthogonal Frequency Division Multiple. Access
- SC-FDMA Single Carrier Frequency Division Multiple Access
- 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.
- a downlink shared channel Physical Downlink Shared Channel (PDSCH)
- a broadcast channel Physical Broadcast Channel (PBCH)
- a downlink control channel Physical Downlink Control
- PDSCH Physical Downlink Control
- 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.
- 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.
- the Master Information Block (MIB) may be transmitted by the PBCH.
- Lower layer control information may be transmitted by PDCCH.
- the lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of PDSCH and PUSCH.
- DCI Downlink Control Information
- the DCI that schedules PDSCH may be called DL assignment, DL DCI, or the like, and the DCI that schedules PUSCH may be called UL grant, UL DCI, or the like.
- the PDSCH may be read as DL data, and the PUSCH may be read as UL data.
- a control resource set (COntrol REsource SET (CORESET)) and a search space (search space) may be used for PDCCH detection.
- CORESET corresponds to a resource for searching DCI.
- the search space corresponds to the search area and search method of PDCCH candidates (PDCCH candidates).
- One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a search space based on the search space settings.
- 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.
- channel state information (Channel State Information (CSI)
- delivery confirmation information for example, it may be called Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.
- scheduling request (Scheduling Request).
- Uplink Control Information including at least one of SR)
- the PRACH may transmit a random access preamble for establishing a connection with the cell.
- downlinks, uplinks, etc. may be expressed without “links”. Further, it may be expressed without adding "Physical" to the beginning of various channels.
- a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like may be transmitted.
- the DL-RS includes a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and a demodulation reference signal (DeModulation).
- CRS Cell-specific Reference Signal
- CSI-RS Channel State Information Reference Signal
- DeModulation Demodulation reference signal
- Reference Signal (DMRS)), positioning reference signal (Positioning Reference Signal (PRS)), phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), and the like may be transmitted.
- PRS Positioning Reference Signal
- PTRS Phase Tracking Reference Signal
- the synchronization signal may be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)).
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- the signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be referred to as SS / PBCH block, SS Block (SSB) and the like.
- SS, SSB and the like may also be called a reference signal.
- a measurement reference signal Sounding Reference Signal (SRS)
- a demodulation reference signal DMRS
- UL-RS Uplink Reference Signal
- UE-specific Reference Signal UE-specific Reference Signal
- FIG. 22 is a diagram showing an example of the configuration of the base station according to the embodiment.
- the base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission line interface 140.
- the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140 may each be provided with one or more.
- the functional block of the characteristic portion in the present embodiment is mainly shown, and it may be assumed that the base station 10 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 110 controls the entire base station 10.
- the control unit 110 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 control unit 110 may control signal generation, scheduling (for example, resource allocation, mapping) and the like.
- the control unit 110 may control transmission / reception, measurement, and the like using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.
- the control unit 110 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 120.
- the control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.
- 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 the common recognition in the technical field 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 transmitting / receiving antenna 130 can be composed of an antenna described based on the common recognition in the technical field according to the present disclosure, for example, an array antenna.
- the transmission / reception unit 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
- the transmission / reception unit 120 may receive the above-mentioned uplink channel, uplink reference signal, and the like.
- 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, Packet Data Convergence Protocol (PDCP) layer processing and Radio Link Control (RLC) layer processing (for example, RLC) for data, control information, etc. acquired from control unit 110.
- 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. Processing (if necessary), inverse Fast Fourier Transform (IFFT) processing, precoding, transmission processing such as digital-analog transformation may be performed, and the baseband signal may be output.
- channel coding may include error correction coding
- modulation modulation
- mapping mapping, filtering
- DFT discrete Fourier Transform
- IFFT inverse Fast Fourier Transform
- precoding coding
- transmission processing such as digital-analog transformation
- 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 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by 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) for the acquired baseband signal. )) Processing (if necessary), filtering, decoding, 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 transmission line interface 140 transmits / receives signals (backhaul signaling) to / from a device included in the core network 30, another base station 10, etc., and user data (user plane data) for the user terminal 20 and a control plane. Data or the like may be acquired or transmitted.
- the transmission unit and the reception 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 transmits a TCI list indicating a plurality of transmission setting instruction (TCI) states applicable to a plurality of types of channels, transmits an update list indicating a plurality of serving cells, and in one of the plurality of serving cells. Instructional information indicating one or more TCI states among the plurality of TCI states may be transmitted.
- the control unit 110 may apply the one or more TCI states to the plurality of types of channels in the plurality of serving cells.
- the transmission / reception unit 120 transmits setting information indicating a plurality of transmission setting instruction (TCI) states applicable to a plurality of types of channels, and transmits instruction information indicating a TCI state of one of the plurality of TCI states. May be good.
- the control unit 110 applies a plurality of power control parameters to each of the plurality of TCI states, applies the one TCI state to the plurality of types of channels, and applies the one of the plurality of power control parameters to the one.
- One power control parameter corresponding to the TCI state may be applied to the uplink channel among the plurality of types of channels to control reception of the uplink channel.
- FIG. 23 is a diagram showing an example of the configuration of the user terminal according to the embodiment.
- the user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230.
- the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided with one or more.
- the functional block of the feature portion in the present embodiment is mainly shown, 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 control unit 210 may control signal generation, mapping, and the like.
- the control unit 210 may control transmission / reception, measurement, and the like using the transmission / reception unit 220 and the transmission / reception antenna 230.
- the control unit 210 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 220.
- the transmission / reception unit 220 may include a baseband unit 221, 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 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 2211 and an RF unit 222.
- the receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.
- the transmitting / receiving antenna 230 can be composed of an antenna described based on the common recognition in the technical field according to the present disclosure, for example, an array antenna.
- 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 transmission / reception unit 220 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 220 processes, for example, PDCP layer processing, RLC layer processing (for example, RLC retransmission control), and MAC layer processing (for example, for data, control information, etc. acquired from the control unit 210). , HARQ retransmission control), etc., to generate a bit string to be transmitted.
- the transmission / reception unit 220 (transmission processing unit 2211) performs channel coding (may include error correction coding), modulation, mapping, filtering processing, DFT processing (if necessary), and IFFT processing for the bit string to be transmitted. , Precoding, digital-to-analog conversion, and other transmission processing may be performed to output a baseband signal.
- Whether or not to apply the DFT process may be based on the transform precoding setting.
- the transmission / reception unit 220 transmits the channel using the DFT-s-OFDM waveform.
- the DFT process may be performed as the transmission process, and if not, the DFT process may not be performed as the transmission process.
- the transmission / reception unit 220 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 230. ..
- the transmission / reception unit 220 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 230.
- the transmission / reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering processing, demapping, demodulation, and decoding (error correction) for the acquired baseband signal. Decoding may be included), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.
- the transmission / reception unit 220 may perform measurement on the received signal.
- the measuring unit 223 may perform RRM measurement, CSI measurement, or the like based on the received signal.
- the measuring unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like.
- the measurement result may be output to the control unit 210.
- the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmission / reception unit 220 and the transmission / reception antenna 230.
- the transmission / reception unit 220 receives a TCI list (for example, a common TCI pool) indicating a plurality of transmission setting instruction (TCI) states (for example, common TCI) applicable to a plurality of types of channels, and receives a plurality of serving cells (for example, CC). ) Is received, and instruction information (for example, DCI / MAC CE) indicating one or more TCI states among the plurality of TCI states in one of the plurality of serving cells is received. May be received.
- the control unit 210 may apply the one or more TCI states to the plurality of types of channels in the plurality of serving cells.
- the instruction information may be downlink control information.
- the downlink control information may indicate one TCI state (aspect 1-1).
- the instruction information may be medium access control (MAC) control element (CE).
- the MAC CE may indicate one or more TCI states (Aspect 1-2).
- the instruction information may be downlink control information.
- the downlink control information may indicate one TCI state for each of the plurality of serving cells (second embodiment).
- the transmission / reception unit 220 receives setting information (for example, a common TCI pool) indicating a plurality of transmission setting instruction (TCI) states applicable to a plurality of types of channels, and sets the TCI state of one of the plurality of TCI states.
- the indicated instruction information (for example, DCI / MAC CE) may be received.
- a plurality of power control parameters (for example, TPC-related parameters) are associated with the plurality of TCI states, and the one TCI state is applied to the plurality of types of channels to control the plurality of powers.
- one power control parameter corresponding to the one TCI state may be applied to the uplink channel among the plurality of types of channels.
- the transmission / reception unit 220 may receive an update list indicating a plurality of serving cells, and may receive the instruction information in one of the plurality of serving cells.
- the control unit 210 may apply the one TCI state to the plurality of types of channels in the plurality of serving cells, and may apply the one power control parameter to the uplink channels in the plurality of serving cells. (Third embodiment).
- the control unit 210 may apply the one power control parameter to the uplink channel at a time point when the one TCI state is applied to the plurality of types of channels, or after the time point. Embodiment).
- the instruction information may be a field in the downlink control information.
- the size of the field may depend on the number of the plurality of TCI states (fifth embodiment).
- each functional block is realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , 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.
- the functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and deemed. , Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
- a functional block (configuration unit) for functioning transmission may be referred to as a transmitting unit (transmitting unit), a transmitter (transmitter), or the like.
- the realization method is not particularly limited.
- the base station, user terminal, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
- FIG. 24 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
- the base station 10 and the user terminal 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. ..
- the hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the 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 in 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 processor 1001 operates, for example, an operating system to control the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
- CPU central processing unit
- control unit 110 210
- transmission / reception unit 120 220
- the like may be realized by the processor 1001.
- the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
- a program program code
- the control unit 110 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized in the same manner for other functional blocks.
- 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 (EEPROM), 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 storage 1003 is a computer-readable recording medium, and is, for example, a flexible disk, a floppy disk (registered trademark) disk, an optical magnetic disk (for example, a compact disc (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, etc.). At least one of Blu-ray® discs), removable discs, optical disc drives, smart cards, flash memory devices (eg cards, sticks, key drives), magnetic stripes, databases, servers and other suitable storage media. May be configured by.
- the storage 1003 may be referred to as an auxiliary storage device.
- the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 has, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)). May be configured to include.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- the transmission / reception unit 120 (220), the transmission / reception antenna 130 (230), and the like described above may be realized by the communication device 1004.
- the transmission / reception unit 120 (220) may be physically or logically separated from the transmission unit 120a (220a) and the reception unit 120b (220b).
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that outputs to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- each device such as the processor 1001 and the memory 1002 is connected by the bus 1007 for communicating information.
- the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
- 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 terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings.
- channels, symbols and signals may be read interchangeably.
- the signal may be a message.
- the reference signal may be abbreviated as RS, and may be referred to as a pilot, a pilot signal, or the like depending on the applied standard.
- the component carrier CC may be referred to as a cell, a frequency carrier, a carrier frequency, or the like.
- the wireless frame may be configured by one or more periods (frames) in the time domain.
- Each of the one or more periods (frames) constituting the radio frame may be referred to as a subframe.
- the subframe may be composed of one or more slots in the time domain.
- the subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
- the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
- 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.
- the slot may be composed of one or more symbols in the time area (Orthogonal Frequency Division Multiplexing (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.). Further, the slot may be a time unit based on numerology.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the slot may include a plurality of mini slots.
- Each minislot may be composed of one or more symbols in the time domain. Further, the mini-slot may be referred to as a sub-slot.
- a minislot may consist of a smaller number of symbols than the slot.
- the PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (PUSCH) mapping type A.
- the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (PUSCH) mapping type B.
- the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
- the radio frame, subframe, slot, minislot and symbol may use different names corresponding to each.
- the time units such as frames, subframes, slots, mini slots, and symbols in the present disclosure may be read as each other.
- one subframe may be called TTI
- a plurality of consecutive subframes may be called TTI
- one slot or one minislot may be called TTI. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. May be.
- the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
- 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.
- 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.
- a TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
- a TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, or the like.
- the long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
- the short TTI eg, shortened TTI, etc.
- TTI having the above TTI length may be read as TTI having the above TTI length.
- a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
- the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
- the number of subcarriers contained in the RB may be determined based on numerology.
- the RB may include one or more symbols in the time domain, and may have a length of 1 slot, 1 mini slot, 1 subframe or 1 TTI.
- Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
- one or more RBs are a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, and an RB. It may be called a pair or the like.
- PRB Physical RB
- SCG sub-carrier Group
- REG resource element group
- PRB pair an RB. It may be called a pair or the like.
- 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.
- Bandwidth Part (which may also be called partial bandwidth) represents a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. May be good.
- the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- the BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL).
- BWP UL BWP
- BWP for DL DL BWP
- One or more BWPs may be set in one carrier for the UE.
- At least one of the configured BWPs may be active and the UE may not expect to send or receive a given signal / channel outside the active BWP.
- “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
- the above-mentioned structures such as wireless frames, subframes, slots, mini-slots and symbols are merely examples.
- the number of subframes contained in a radio frame the number of slots per subframe or radioframe, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
- the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be changed in various ways.
- the information, parameters, etc. described in the present disclosure may be expressed using an absolute value, a relative value from a predetermined value, or another corresponding information. It may be represented.
- the radio resource may be indicated by a given index.
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
- information, signals, etc. can be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layers.
- Information, signals, etc. may be input / output via a plurality of network nodes.
- Input / output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information, signals, etc. can be overwritten, updated, or added. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.
- the notification of information is not limited to the embodiment / embodiment described in the present disclosure, and may be performed by using another method.
- the notification of information in the present disclosure includes physical layer signaling (for example, downlink control information (DCI)), uplink control information (Uplink Control Information (UCI))), and higher layer signaling (for example, Radio Resource Control). (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals or combinations thereof. May be carried out by.
- DCI downlink control information
- UCI Uplink Control Information
- RRC Radio Resource Control
- MIB Master Information Block
- SIB System Information Block
- MAC Medium Access Control
- 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 referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an 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 notification of predetermined information is not limited to the explicit notification, but implicitly (for example, by not notifying the predetermined information or another information). May be done (by notification of).
- 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 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.
- the terms “system” and “network” used in this disclosure may be used interchangeably.
- the “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
- wireless base station fixed station
- NodeB NodeB
- eNB eNodeB
- gNB gNodeB
- Access point "Transmission point (Transmission Point (TP))
- Reception point 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 (eg, 3) cells.
- a base station accommodates multiple cells, the entire base station coverage area 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 a base station and a base station subsystem that provides communication services in this coverage.
- MS mobile station
- UE user equipment
- terminal terminal
- 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, a 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 base station in the present disclosure may be read by the user terminal.
- the communication between the base station and the user terminal is replaced with the communication between a plurality of user terminals (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- Each aspect / embodiment of the present disclosure may be applied to the configuration.
- the user terminal 20 may have the function of the base station 10 described above.
- words such as "up” and “down” may be read as words corresponding to communication between terminals (for example, "side”).
- the upstream channel, the downstream channel, and the like may be read as a side channel.
- 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 a base station, 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.
- Each aspect / embodiment described in the present disclosure may be used alone, in combination, or may be switched and used according to the execution. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.
- LTE Long Term Evolution
- LTE-A LTE-Advanced
- SUPER 3G IMT-Advanced
- 4G 4th generation mobile communication system
- 5G 5th generation mobile communication system
- 6G 6th generation mobile communication system
- xG xG (xG (x is, for example, integer, fraction)
- Future Radio Access FAA
- RAT New -Radio Access Technology
- NR New Radio
- NX New radio access
- FX Future generation radio access
- GSM registered trademark
- CDMA2000 Code Division Multiple Access
- UMB Ultra Mobile Broadband
- LTE 802.11 Wi-Fi®
- LTE 802.16 WiMAX®
- LTE 802.20 Ultra-WideBand (UWB), Bluetooth®, and other suitable radios. It may be applied to a system using a communication method, a next-generation system extended based on these, and the like.
- UMB Ultra-WideBand
- references to elements using designations such as “first” and “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted or that the first element must somehow precede the second element.
- determining used in this disclosure may include a wide variety of actions.
- judgment (decision) means judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry) ( For example, searching in a table, database or another data structure), ascertaining, etc. may be considered to be "judgment”.
- judgment (decision) includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access (for example). It may be regarded as “determining” such as “accessing” (for example, accessing data in memory).
- judgment (decision) is regarded as “judgment (decision)” such as resolution, selection, selection, establishment, and comparison. May be good. That is, “judgment (decision)” may be regarded as “judgment (decision)” of some action.
- the "maximum transmission power" described in the present disclosure may mean the maximum value of the transmission power, may mean the nominal UE maximum transmit power, or may mean the rated maximum transmission power (the). It may mean rated UE maximum transmit power).
- connection are any direct or indirect connections or connections between two or more elements. Means, and can include the presence of one or more intermediate elements between two elements that are “connected” or “bonded” 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”.
- the radio frequency domain microwaves. It can be considered to be “connected” or “coupled” to each other using frequency, electromagnetic energy having wavelengths in the region, light (both visible and invisible) regions, and the like.
- the term "A and B are different” may mean “A and B are different from each other”.
- the term may mean that "A and B are different from C”.
- Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
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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/チャネルと表現する)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)を制御することが検討されている。
・QCLタイプA(QCL-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(QCL-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(QCL-C):ドップラーシフト及び平均遅延、
・QCLタイプD(QCL-D):空間受信パラメータ。
PUSCH、PUCCH、SRSのそれぞれの送信電力制御におけるパスロスPLb,f,c(qd)[dB]は、サービングセルcのキャリアfのアクティブUL BWP bに関連付けられる下りBWP用の参照信号(RS、パスロス参照RS(PathlossReferenceRS))のインデックスqdを用いてUEによって計算される。本開示において、パスロス参照RS、pathloss(PL)-RS、インデックスqd、パスロス計算に用いられるRS、パスロス計算に用いられるRSリソース、は互いに読み替えられてもよい。本開示において、計算、推定、測定、追跡(track)、は互いに読み替えられてもよい。
RRC接続モードにおいて、DCI内TCI情報(上位レイヤパラメータTCI-PresentInDCI)が「有効(enabled)」とセットされる場合と、DCI内TCI情報が設定されない場合と、の両方において、DL DCI(PDSCHをスケジュールするDCI)の受信と、対応するPDSCH(当該DCIによってスケジュールされるPDSCH)と、の間の時間オフセットが、閾値(timeDurationForQCL)より小さい場合(適用条件、第1条件)、もし非クロスキャリアスケジューリングの場合、PDSCHのTCI状態(デフォルトTCI状態)は、その(特定UL信号の)CCのアクティブDL BWP内の最新のスロット内の最低のCORESET IDのTCI状態であってもよい。そうでない場合、PDSCHのTCI状態(デフォルトTCI状態)は、スケジュールされるCCのアクティブDL BWP内のPDSCHの最低のTCI状態IDのTCI状態であってもよい。
統一TCIフレームワークによれば、UL及びDLのチャネルを共通のフレームワークによって制御できる。統一TCIフレームワークは、Rel.15のようにTCI状態又は空間関係をチャネル毎に規定するのではなく、共通ビームを指示し、それをUL及びDLの全てのチャネルへ適用してもよいし、UL用の共通ビームをULの全てのチャネルに適用し、DL用の共通ビームをDLの全てのチャネルに適用してもよい。
UEは、最大許容曝露(Maximum Permitted Exposure(MPE))に起因する異なるULビームを用いる。
UEは、UL信号強度に起因する異なるULビームを用いる。
UEは、ULロードバランスに起因する異なるULビームを用いる。
Rel.16において、1つのMAC CEが複数のCCのビームインデックス(TCI状態)を更新できる。
[手順A]
UEは、1つのCC/DL BWP内において、又はCC/BWPの1つのセット内において、DCIフィールド(TCIフィールド)のコードポイントに、8個までのTCI状態をマップするための、アクティベーションコマンドを受信する。CC/DL BWPの1つのセットに対してTCI状態IDの1つのセットがアクティベートされる場合、そこで、CCの適用可能リストが、アクティベーションコマンド内において指示されたCCによって決定され、TCI状態の同じセットが、指示されたCC内の全てのDL BWPに対して適用される。もしUEが、CORESET情報要素(ControlResourceSet)内のCORESETプールインデックス(CORESETPoolIndex)の異なる複数の値を提供されず、且つ、2つのTCI状態にマップされる少なくとも1つのTCIコードポイントを提供されない場合のみ、TCI状態IDの1つのセットは、CC/DL BWPの1つのセットに対してアクティベートされることができる。
[手順B]
もしUEが、同時TCI更新リスト(simultaneousTCI-UpdateList-r16及びsimultaneousTCI-UpdateListSecond-r16の少なくとも1つ)による同時TCI状態アクティベーションのためのセルの2つまでのリストを、同時TCIセルリスト(simultaneousTCI-CellList)によって提供される場合、UEは、MAC CEコマンドによって提供されるサービングセルインデックスから決定される1つのリスト内の全ての設定されたセルの全ての設定されたDL BWP内の、インデックスpを有するCORESETに対して、同じアクティベートされたTCI状態ID値を有するTCI状態によって提供されるアンテナポートquasi co-location(QCL)を適用する。もしUEが、CORESET情報要素(ControlResourceSet)内のCORESETプールインデックス(CORESETPoolIndex)の異なる複数の値を提供されず、且つ、2つのTCI状態にマップされる少なくとも1つのTCIコードポイントを提供されない場合のみ、同時TCI状態アクティベーション用に、同時TCIセルリストが提供されることができる。
[手順C]
CC/BWPの1つのセットに対し、SRSリソース情報要素(上位レイヤパラメータSRS-Resource)によって設定されるSP又はAP-SRSリソースのための空間関係情報(spatialRelationInfo)が、MAC CEによってアクティベート/アップデートされる場合、そこで、CCの適用可能リストが、同時空間更新リスト(上位レイヤパラメータsimultaneousSpatial-UpdateList-r16又はsimultaneousSpatial-UpdateListSecond-r16)によって指示され、指示されたCC内の全てのBWPにおいて、同じSRSリソースIDを有するSP又はAP-SRSリソースに対して、その空間関係情報が適用される。もしUEが、CORESET情報要素(ControlResourceSet)内のCORESETプールインデックス(CORESETPoolIndex)の異なる複数の値を提供されず、且つ、2つのTCI状態にマップされる少なくとも1つのTCIコードポイントを提供されない場合のみ、CC/BWPの1つのセットに対し、SRSリソース情報要素(上位レイヤパラメータSRS-Resource)によって設定されるSP又はAP-SRSリソースのための空間関係情報(spatialRelationInfo)が、MAC CEによってアクティベート/アップデートされる。
前述のように、共通TCIフレームワークによって、共通のビーム指示/アクティベート(MAC CE/DCI)によって、複数種類のチャネルのビームを制御することが検討されているが、この制御は1つのCC(セル)に対して行われる。
本開示において、DL TCI、DL共通TCI、DL統一TCI、共通TCI、統一TCI、は互いに読み替えられてもよい。本開示において、UL TCI、UL共通TCI、UL統一TCI、共通TCI、統一TCI、は互いに読み替えられてもよい。
BWP/CC毎の共通TCIプールが上位レイヤによって設定されてもよい。
CCリストに含まれる1つのBWP/CCにおけるDCIによって共通TCIが指示される場合、そのCCリストに含まれる全てのBWP/CCの共通TCIが、指示された共通TCIへ更新されてもよい。
CCリストに含まれる1つのBWP/CCにおけるMAC CEによって共通TCIが指示される場合、そのCCリストに含まれる全てのBWP/CCの共通TCIが、指示された共通TCIへ更新されてもよい。
CCリスト内の1つのBWP/CCにおいて、複数のアクティブ共通TCIのうちの1つの共通TCIがDCIによって指示される場合、指示された共通TCIがCCリスト内の全てのBWP/CCに適用されてもよい。
CCリスト内の1つのBWP/CCにおいて、複数のアクティブ共通TCIのうちの1つの共通TCIがDCIによって指示される場合、指示された共通TCIが当該BWP/CCに適用されてもよい。CCリスト内のBWP/CC毎に、DCIが当該BWP/CCの共通TCIを指示してもよい。
複数BWP/複数CCのグループ(セット、範囲)毎の共通TCIプールが上位レイヤによって設定されてもよい。共通TCIプールは、バンド毎に設定されてもよいし、UE毎に設定されてもよい。
共通TCIによってUL TCIを指示する場合、送信電力制御(TPC)関連パラメータ(電力制御パラメータ)をどのように管理するかが問題となる。TPC関連パラメータは、パスロス参照RS(PL-RS)、P0、α、クローズドループTPCのTPCコマンド累積値、の少なくとも1つを含んでもよい。
共通TCIがULに適用される場合のTPC関連パラメータは、共通TCIとは別に設定されてもよい。
PUCCHに対して態様3-2が適用される。
PUCCHに対し、Rel.15/16におけるTPC関連パラメータの通知/設定方法(PUCCH空間関係情報、PUCCH-SpatialRelationInfo)を用いてTPC関連パラメータが通知される。共通TCIがPUCCHに適用されることが、仕様に規定された/RRCによって設定された場合、UEは、PUCCH空間関係情報を用いず、共通TCIに基づいて、PUCCHの空間ドメインフィルタを決定してもよい(空間ドメインパラメータ/空間ドメインセッティングを得てもよい)。言い換えれば、UEは、PUCCH空間関係情報に対して設定された空間ドメインパラメータ/セッティングを無視してもよい。
共通TCI内において(共通TCIの一部として)、PUCCH空間関係情報ID(PUCCH-SpatialRelationInfo-Id、PUCCH空間関係情報との関連付け、共通TCIに関連付けられたPUCCH空間関係情報)が通知/設定されてもよい。
共通TCIがULに適用される場合のTPC関連パラメータは、共通TCI内において設定されてもよい。
第1の実施形態と第3の実施形態が組み合わせられてもよい。
第2の実施形態と第3の実施形態が組み合わせられてもよい。
共通TCIが更新された場合、UL/DLのチャネル/RSのビーム想定とTPC関連パラメータとが更新されてもよい。
DL共通TCIの適用タイミングと、UL共通TCIの適用タイミングとは、時刻t_1である。言い換えれば、DL共通TCIの適用タイミングと、UL共通TCIの適用タイミングとは、等しい。
DL共通TCIの適用タイミングは時刻t_1であり、UL共通TCIの適用タイミングは時刻t_2である。但し、t_1<t_2。言い換えれば、DL共通TCIの適用タイミングと、UL共通TCIの適用タイミングとは、互いに異なる。
TPC関連パラメータの適用タイミングは、UL共通TCIの適用タイミングと等しくてもよい(例えば、t_2)。TPC関連パラメータの適用タイミングは、UL共通TCIの適用タイミングと異なってもよい。例えば、TPC関連パラメータの適用タイミングは、UL共通TCIの適用タイミングより遅くてもよい。TPC関連パラメータの適用タイミングは時刻t_3であり、t_2<t_3であってもよい。
DL共通TCIが時刻t_0において更新/指示/通知された場合、DL共通TCIの更新タイミングは、時刻t_1であってもよい。
UL共通TCIが時刻t_0において更新/指示/通知された場合、UL共通TCIの更新タイミングは、時刻t_2であってもよい。
t_1<t_2であってもよい。
TPC関連パラメータの適用タイミングは、UL共通TCIの適用タイミングと等しくてもよい(例えば、t_2)。TPC関連パラメータの適用タイミングは、UL共通TCIの適用タイミングと異なってもよい。例えば、TPC関連パラメータの適用タイミングは、UL共通TCIの適用タイミングより遅くてもよい。TPC関連パラメータの適用タイミングは時刻t_3であり、t_2<t_3であってもよい。
DCIにおいて、共通TCIを制御可能な特定フィールド(DCIフィールド)は、以下のフィールド1から4の少なくとも1つに従ってもよい。
UL及びDLの両方用のジョイントTCIプールに対し、DL及びULの両方用の共通TCIの指示のために、DL DCI内の既存のTCIフィールドが用いられてもよい。
UL及びDLの両方用のジョイントTCIプールに対し、フィールド1に加え、DL及びULの両方用の共通TCIの指示のために、UL DCI内の共通TCI指示用の新規フィールド(例えば、統一TCIフィールド)が用いられてもよい。
UL/DL用のセパレートTCIプールに対し、DL TCIの指示のために、DL DCI内の既存のTCIフィールドが用いられてもよいし、UL TCIの指示のために、UL DCI内の共通TCI指示用の新規フィールド(例えば、統一TCIフィールド)が用いられてもよい。
UL/DL用のセパレートTCIプールに対し、DL TCIの指示のために、DL DCI内の新規フィールド(例えば、第1TCI(TCI#1)フィールド)が用いられてもよいし、UL TCIの指示のために、DL DCI内の新規フィールド(例えば、第2TCI(TCI#2)フィールド)が用いられてもよい。
上位レイヤによって設定/アクティベートされた共通TCIの数に応じて、DL DCI内のTCIフィールドのサイズが変化してもよい。
サイズ決定方法1-1に加え、上位レイヤによって設定/アクティベートされた共通TCIの数に応じて、UL DCI内の共通TCI指示用の新規フィールド(例えば、統一TCIフィールド)のサイズが変化してもよい。
上位レイヤによって設定/アクティベートされたDL用共通TCIの数(DL用共通TCIプール内の共通TCIの数)に応じて、DL DCI内のTCIフィールドのサイズが変化してもよい。上位レイヤによって設定/アクティベートされたUL用共通TCIの数(UL用共通TCIプール内の共通TCIの数)に応じて、UL DCI内の共通TCI指示用の新規フィールド(例えば、統一TCIフィールド)のサイズが変化してもよい。
上位レイヤによって設定/アクティベートされたDL用共通TCIの数(DL用共通TCIプール内の共通TCIの数)に応じて、DL DCI内のDL共通TCI指示用の新規フィールド(例えば、第1TCI(TCI#1)フィールド)のサイズが変化してもよい。上位レイヤによって設定/アクティベートされたUL用共通TCIの数(DL用共通TCIプール内の共通TCIの数)に応じて、UL DCI内のUL共通TCI指示用の新規フィールド(例えば、第2TCI(TCI#2)フィールド)のサイズが変化してもよい。
第1から第5の実施形態における少なくとも1つの機能(特徴、feature)に対応するUE能力(capability)が規定されてもよい。UEがこのUE能力を報告した場合、UEは、対応する機能を行ってもよい。UEがこのUE能力を報告し、且つこの機能に対応する上位レイヤパラメータを設定された場合、UEは、対応する機能を行ってもよい。この機能に対応する上位レイヤパラメータ(RRC情報要素)が規定されてもよい。この上位レイヤパラメータが設定された場合、UEは、対応する機能を行ってもよい。
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22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23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 (6)
- 複数種類のチャネルに適用可能な複数の送信設定指示(TCI)状態を示す設定情報を受信し、前記複数のTCI状態のうちの1つのTCI状態を示す指示情報を受信する受信部と、
複数の電力制御パラメータが前記複数のTCI状態にそれぞれ関連付けられ、前記1つのTCI状態を、前記複数の種類のチャネルに適用し、前記複数の電力制御パラメータのうち、前記1つのTCI状態に対応する1つの電力制御パラメータを、前記複数の種類のチャネルのうちの上りリンクチャネルに適用する制御部と、を有する端末。 - 前記受信部は、複数のサービングセルを示す更新リストを受信し、前記複数のサービングセルの1つにおいて前記指示情報を受信し、
前記制御部は、前記複数のサービングセルにおける前記複数種類のチャネルに、前記1つのTCI状態を適用し、前記複数のサービングセルにおける前記上りリンクチャネルに、前記1つの電力制御パラメータを適用する、請求項1に記載の端末。 - 前記制御部は、前記1つのTCI状態を前記複数種類のチャネルに適用する時点、又は前記時点の後において、前記1つの電力制御パラメータを前記上りリンクチャネルに適用する、請求項1又は請求項2に記載の端末。
- 前記指示情報は、下りリンク制御情報内のフィールドであり、
前記フィールドのサイズは、前記複数のTCI状態の数に依存する、請求項1から請求項3のいずれかに記載の端末。 - 複数種類のチャネルに適用可能な複数の送信設定指示(TCI)状態を示す設定情報を受信し、前記複数のTCI状態のうちの1つのTCI状態を示す指示情報を受信するステップと、
複数の電力制御パラメータが前記複数のTCI状態にそれぞれ関連付けられ、前記1つのTCI状態を、前記複数の種類のチャネルに適用し、前記複数の電力制御パラメータのうち、前記1つのTCI状態に対応する1つの電力制御パラメータを、前記複数の種類のチャネルのうちの上りリンクチャネルに適用するステップと、を有する、端末の無線通信方法。 - 複数種類のチャネルに適用可能な複数の送信設定指示(TCI)状態を示す設定情報を送信し、前記複数のTCI状態のうちの1つのTCI状態を示す指示情報を送信する送信部と、
複数の電力制御パラメータが前記複数のTCI状態にそれぞれ関連付けられ、前記1つのTCI状態を、前記複数の種類のチャネルに適用し、前記複数の電力制御パラメータのうち、前記1つのTCI状態に対応する1つの電力制御パラメータが、前記複数の種類のチャネルのうちの上りリンクチャネルに適用され、前記上りリンクチャネルの受信を制御する制御部と、を有する基地局。
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