WO2022014032A1 - 端末、無線通信方法及び基地局 - Google Patents
端末、無線通信方法及び基地局 Download PDFInfo
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- WO2022014032A1 WO2022014032A1 PCT/JP2020/027807 JP2020027807W WO2022014032A1 WO 2022014032 A1 WO2022014032 A1 WO 2022014032A1 JP 2020027807 W JP2020027807 W JP 2020027807W WO 2022014032 A1 WO2022014032 A1 WO 2022014032A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
- H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
- H04L5/0094—Indication of how sub-channels of the path are allocated
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)) estimates a path loss based on a path loss reference signal (PL-RS), and based on the path loss.
- PL-RS path loss reference signal
- Controlling transmission processing of uplink (UL) transmission (UL channel / UL signal) is being studied.
- the PL-RS is updated for each serving cell / bandwidth part (BWP)
- the overhead / latency may increase and the throughput may decrease.
- one of the purposes of this disclosure is to provide a terminal, a wireless communication method, and a base station that appropriately update PL-RS.
- the terminal is a medium access control-control element (reception unit) that receives a list indicating one or more serving cells, one serving cell ID included in the list, and a path loss reference signal ID.
- reception unit receives a list indicating one or more serving cells, one serving cell ID included in the list, and a path loss reference signal ID.
- MAC CE When MAC CE is received, it has a control unit that applies the path loss reference signal ID to each sounding reference signal (SRS) resource set of the one or more serving cells.
- SRS sounding reference signal
- PL-RS can be appropriately updated.
- FIG. 1 is a diagram showing an example of simultaneous TCI state update for a plurality of serving cells.
- FIG. 2 is a diagram showing an example of SRS path loss reference RS update MAC CE.
- FIG. 3 is a diagram showing an example of setting / updating the SRS resource set, the PL-RS, and the spatial relationship.
- FIG. 4 is a diagram showing an example of a PUSCH path loss reference RS update MAC CE.
- FIG. 5 is a diagram showing an example of setting / updating the SRI-PUSCH power control information element and the PUSCH path loss reference RS-ID.
- FIG. 6 is a diagram showing an example of the operation of the first embodiment.
- FIG. 7 is a diagram showing an example of the operation of the second embodiment.
- FIG. 8 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
- FIG. 9 is a diagram showing an example of the configuration of the base station according to the embodiment.
- FIG. 10 is a diagram showing an example of the configuration of a user terminal according to an embodiment.
- FIG. 11 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 reference signal for measurement (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).
- 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. using the index q d pathloss reference RS (PathlossReferenceRS)) is computed by the UE.
- 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.
- Beam management In DL / UL beam management, more efficient beam management such as lower latency and lower overhead is being considered.
- one MAC CE can update the beam indexes (TCI states) of multiple CCs. This allows for low overhead and low latency beam indications.
- 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.
- Reference numeral 16 supports simultaneous update of the QCL / TCI state / spatial relationship for the serving cell / CC set.
- the PL-RS for UL channel / RS is highly related to the QCL / TCI state / spatial relationship of UL channel / RS.
- the QCL for UL channel / RS is updated, it is preferable that PL-RS for UL channel / RS is also updated.
- the serving cell / CC in the intra-band CA also updates the PL-RS for UL channel / RS.
- ⁇ PL-RS for SRS> The UE does not assume to simultaneously maintain more than 4 path loss estimates per serving cell for all PUSCH / PUCCH / SRS transmissions except for SRS transmissions set by the SRS-Positioning-Config information element.
- PL b, f, c (q d ) are DL path loss estimates [DB] calculated by the UE using the RS resource index q d for the active DL BWP in the serving cell c.
- the RS resource index q d is provided by the pathloss reference RS information element (pathlossReferenceRS) associated with the SRS resource set q s , which is the SSB index (ssb-Index) that provides the SS / PBCH block index, or CSI-RS. It is a CSI-RS index (csi-RS-Index) that provides a resource index.
- pathlossReferenceRS pathloss reference RS information element
- the MAC CE will be aperiodic or semi-persistent by the SRS path loss reference RS-ID (SRS-PathlossReferenceRS-Id).
- SRS-PathlossReferenceRS-Id SRS path loss reference RS-ID
- a corresponding RS resource index qd for the stent's SRS resource set qs can be provided. That is, it is explicitly set / instructed by at least one of PL-RS, RRC (pathlossReferenceRS) and MAC CE (SRS-PathlossReferenceRS-Id) for the SRS resource set.
- the serving cell ID field, the BWP ID field, and the SRS path loss reference RS update MAC CE include an SRS resource set ID field and a path loss reference RS-ID field.
- the SRS resource set ID field indicates the SRS resource set ID identified by the SRS resource set ID information element.
- the path loss reference RS-ID field indicates the path loss reference RS-ID identified by the path loss reference RS-ID information element.
- This path loss reference RS-ID updates the path loss reference RS-ID for the SRS resource set indicated by the SRS resource set ID field. That is, the PL-RS of the SRS is updated by the SRS path loss reference RS-ID (SRS-PathlossReferenceRS-Id) in the MAC CE.
- the SRS resource set information element includes a path loss reference RS information element (pathlossReferenceRS, PathlossReferenceRS-Config) and a path loss reference RS list (pathlossReferenceRS-List-r16, a list of PathlossReferenceRS-Config). ..
- the pathloss reference RS information element includes an SSB index or a CSI-RS index. PL-RS is set as part of the SRS resource set.
- the SRS resource set # 1 includes the SRS resources # 1 and # 2. Spatial relations # 1 and # 2 for SRS are associated with SRS resources # 1 and # 2, respectively.
- PL-RS # 1 for SRS is associated with SRS resource set # 1 by at least one of RRC and MAC CE.
- the UE sets the number of RS resource indexes up to the maximum number of PUSCH path loss reference RSs (maxNrofPUSCH-PathlossReferenceRSs) and a set of RS settings for those RS resource indexes by the PUSCH path loss reference RS information element (PUSCH-PathlossReferenceRS). May be done.
- the UE identifies the RS resource index q d corresponding to the SS / PBCH block index or CSI-RS resource index provided as the PUSCH path loss reference RS-ID (PUSCH-PathlossReferenceRS-Id) in the PUSCH path loss reference RS information element. ..
- the UE is provided with an SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) and a value greater than one of the PUSCH pathloss reference RS-ID (PUSCH-PathlossReferenceRS-Id), the UE is provided. From the SRI-PUSCH power control ID (sri-PUSCH-PowerControl-Id) in the SRI-PUSCH power control information element, a mapping between a set of values for the SRI field in the DCI format that schedules PUSCH transmission is obtained. The UE may determine the RS resource index q d as a PUSCH path loss reference RS-ID equal to 0.
- the SRI-PUSCH power control information element indicates a mapping between the SRI-PUSCH power control ID and the PUSCH power control setting.
- PUSCH power control settings are P0-PUSCH-AlphaSet-ID (sri-PUSCH-P0-PUSCH-AlphaSetId), closed power control loop index (sri-PUSCH-ClosedLoopIndex), path loss reference RS-ID (sri-PUSCH-PathlossReferenceRS). -Id) may be included at least one.
- the SRI-PUSCH power control ID, the SRI ID, and the code point of the SRI field in the DCI may be read as each other.
- the PUSCH path loss reference RS update MAC CE includes a serving cell ID field, a BWP ID field, a PUSCH path loss reference RS-ID field, a C field, and an SRI ID field.
- the PUSCH path loss reference RS-ID field indicates the PUSCH path loss reference RS-ID identified by the PUSCH path loss reference RS-ID information element.
- This PUSCH path loss reference RS-ID is updated in the SRI-PUSCH power control mapping indicated by one or more SRI ID fields in the same MAC CE.
- the C field indicates the presence of an additional SRI IF in the final octet of this MAC CE.
- the C field is 1, there are two SRI-IDs in the final octet, otherwise there is one SRI-ID in the final octet. There are two SRI IDs, and the SRI ID field indicates the SRI-PUSCH power control ID identified by the SRI-PUSCH power control ID information element.
- PL-RS update enable information element (enablePLRSupdateForPUSCHSRS) for PUSCH and SRS is set to enable the MAC CE update function
- at least one SRI-PUSCH power control information element should be set. be.
- MAC CE updates the association between the configured SRI-PUSCH power control information element and the PUSCH path loss reference RS-ID.
- the SRI-PUSCH power control information element includes a PUSCH path loss reference RS-ID. Therefore, the RRC establishes an association between the configured SRI-PUSCH power control information element and the PUSCH path loss reference RS-ID.
- the spatial relationship of SRS When the spatial relationship of SRS is updated, it may be considered that the spatial relationship of PUSCH is also updated.
- To update the simultaneous spatial relationship of a set of serving cells for SRS refer to Rel. Supported at 16. This means that the spatial relationship of the PUSCH may be updated across a plurality of serving cells. However, PUSCH PL-RS updates that span multiple serving cells are not supported.
- the UE is an RS resource index corresponding to the SS / PBCH block index or CSI-RS resource index provided by the PUCCH path loss reference R-ID (PUCCH-PathlossReferenceRS-Id) in the PUCCH path loss reference RS information element (PUCCH-PathlossReferenceRS). Identifies q d.
- the UE is provided with a pathloss reference RS information element (pathlossReferenceRS) and PUCCH spatial relation information (PUCCH-SpatialRelationInfo), the UE is PUCCH by the index provided by the corresponding value of the PUCCH path loss reference RS-ID.
- pathlossReferenceRS pathlossReferenceRS
- PUCCH spatial relation information PUCCH spatial relation information
- the UE is PUCCH by the index provided by the corresponding value of the PUCCH path loss reference RS-ID.
- the UE is provided with more than one value of the PUCCH spatial relationship information ID (PUCCH-SpatialRelationInfoId) and the UE receives an activation command indicating the value of the PUCCH spatial relationship information ID, the UE responds.
- the reference signal information element value in the PUCCH path loss reference RS information element is determined through
- the UE is provided with the path loss reference RS information element and is not provided with the PUCCH spatial relationship information, the UE is from the PUCCH path loss reference RS-ID with index 0 in the PUCCH path loss reference RS to the PUCCH path loss reference RS. Get the reference signal information element.
- the PUCCH spatial relationship information includes the PUCCH path loss reference RS-ID.
- 16PUCCH spatial relation information (PUCCH-SpatialRelationInfo-r16) can be found in Rel. 16
- a PUCCH path loss reference RS-ID (PUCCH-PathlossReference RS-Id-r16) is included. That is, with respect to PUCCH, the path loss reference RS information element is a part of PUCCH spatial relation information. As soon as the spatial relation information of PUCCH is updated, PL-RS of PUCCH is updated.
- serving cells Not all serving cells have PUCCH resources. Only some of the plurality of serving cells may be populated with PUCCH resources. Serving cells with PUCCH resources are not in the same cell group. Therefore, simultaneous QCL updates for PUCCH may not be supported across multiple serving cells.
- PL-RS is part of the spatial relationship setting.
- the PL-RS for PUCCH is updated in the same manner.
- the PL-RS for PUCCH does not have to be updated individually.
- the overhead / latency may increase and the throughput may decrease.
- the present inventors have conceived a method of simultaneously updating PL-RS for one or more serving cells / BWP.
- a / B and “at least one of A and B” may be read as each other.
- 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.
- RRC, RRC parameter, RRC message, upper layer parameter, information element (IE), and setting may be read as each other.
- support, control, controllable, working, working may be read interchangeably.
- activate, update, indicate, enable, and specify may be read as interchangeable with each other.
- MAC CE update command
- activation / deactivation command may be read as each other.
- 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
- 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
- the UE spatial domain transmit filter, UE transmit beam, UL beam, UL transmit beam, UL precoding, and UL precoder may be read interchangeably.
- 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, and the CSI-RS may be read as each other.
- PL-RS in multiple BWP / CCs may be updated simultaneously by MAC CE or DCI.
- the PL-RS of any of the following BWP / CCs 1 to 4 may be updated at the same time.
- the UE may support simultaneous PL-RS updates for SRS via MAC CE for a set of serving cells / CCs.
- MAC CE for PL-RS update for one SRS resource set of one serving cell belonging to one set.
- this MAC CE may be applied to one SRS resource set in all serving cells in the set.
- the UE is set by RRC with a cell list showing a set of CC # 0, # 1, # 2, and # 3.
- the UE receives the MAC CE indicating CC # 0, SRS resource set # 1, and PL-RS # 1
- the MAC CE receives the SRS resource set in CC # 0, # 1, # 2, and # 3.
- PL-RS # 1 is applied to # 1.
- the same PL-RS ID or the same SSB index / CSI-RS index may be applied to the same SRS resource set ID for all serving cells in that set of serving cells according to the PL-RS ID in the MAC CE. ..
- Simultaneous update of PL-RS for SRS to a set of serving cell / CC using MAC CE may be applied to at least one of P-SRS, SP-SRS and AP-SRS.
- the two sets of serving cells for simultaneous QCL update are Rel. It may be the same as or different from the set of serving cells specified in 16.
- the SRS path loss reference RS update MAC CE is used to direct PL-RS # A to the SRS resource set # 1, in the first embodiment, of another serving cell in the cell list.
- PL-RS of SRS resource set # 1 is updated to PL-RS # A.
- ⁇ Modification example If two sets (lists) of serving cells are set for simultaneous QCL updates and the UE has an SRS path loss reference RS update MAC CE for PL-RS updates to one SRS resource set of one serving cell belonging to one set. When receiving, this MAC CE may be applied to one or more SRS resource sets in all serving cells in that set.
- the PL-RS indicated by MAC CE may follow any of the following options 1 and 2.
- the indicated PL-RS may be applied to the same type of SRS (time domain operation). For example, if the indicated PL-RS is AP-SRS, the PL-RSs of all / other AP-SRS resources may be updated.
- the indicated PL-RS may be applied to all types of SRS (time domain operation). For example, if the indicated PL-RS is AP-SRS, the PL-RS of all / other AP / SP / P-SRS resources may be updated.
- the MAC CE updates the PL-RS of the SRS resource set # 1
- the PL-RS of the SRS resource set other than the SRS resource set # 1 is also updated.
- PL-RS for SRS can be updated simultaneously for a plurality of cells.
- the UE may support simultaneous PL-RS updates for PUSCH via MAC CE for a set of serving cells / CCs.
- the UE is set by RRC with a cell list showing a set of CC # 0, # 1, # 2, and # 3.
- the UE receives the MAC CE indicating CC # 0, PL-RS # 1, SRI-PUSCH power control # 1, and the MAC CE, CC # 0, # 1, # 2, in the cell list, Associate (map) the SRS resource set # 1 in # 3 with PL-RS # 1.
- the PUSCH path loss reference RS-ID (or SSB index / CSI-RS index according to the PUSCH path loss reference RS-ID in this MAC CE) and the SRI ID are applied to all serving cells in one set. May be good. All BWP / CCs may have the same settings for the PUSCH path loss reference RS-ID and SRI ID by RRC.
- the same ID of the activated / indicated SRI, or the same SRI ID, may be assumed in all BWP / CCs (for all serving cells in the set). All BWP / CCs may have the same SRI ID setting by RRC.
- the PL-RS for PUSCH can be updated simultaneously for a plurality of cells.
- UE capability signaling may be specified in the specification to indicate whether to support simultaneous PL-RS updates for SRS to a set of serving cells / CCs via MAC CE.
- the SRS may be at least one resource set of P-SRS, SP-SRS and AP-SRS.
- UE capability signaling to indicate whether to support simultaneous PL-RS updates for PUSCH to a set of serving cells / CCs via MAC CE may be specified in the specification.
- the functions of the first or second embodiment can be realized while maintaining compatibility.
- a list of applicable BWP / CCs may be set (as RRC parameters) for simultaneous updates of PL-RS.
- This list may be at least one of a simultaneous path loss reference RS update list, a first simultaneous path loss reference RS update list, and a second simultaneous path loss reference RS update list.
- the list of applicable BWP / CCs may not be set due to the simultaneous update of PL-RS.
- One of the list of applicable BWP / CCs for simultaneous update of TCI status for PDCCH / PDSCH and the list of applicable BWP / CC for simultaneous update of spatial relations for SRS is (RRC). May be set (as a parameter). This list is available from Rel. It may be used for simultaneous update of 16.
- the UE can appropriately update the PL-RS simultaneously over a plurality of BWP / CCs according to the settings.
- 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. 8 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 that supports 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 for example.
- Uplink Control Information (UCI) including at least one of SR) may be transmitted.
- the PRACH may transmit a random access preamble to establish 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 reference signal for demodulation (DeModulation).
- CRS Cell-specific Reference Signal
- CSI-RS Channel State Information Reference Signal
- DMRS positioning reference signal
- 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. 9 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, status 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 path interface 140.
- the transmission / reception unit 120 may transmit a list indicating one or more serving cells.
- a medium access control-control element (MAC CE) indicating one serving cell ID included in the list and a path loss reference signal ID is transmitted, the control unit 110 refers to each of the one or more serving cells.
- the path loss reference signal ID may be applied to the signal (SRS) resource set.
- the transmission / reception unit 120 may transmit a list indicating one or more serving cells.
- the control unit 110 indicates a medium indicating one serving cell ID included in the list, a path loss reference signal ID, and one or more sounding reference signal resource indicator (SRI) -physical uplink shared channel (PUSCH) power control IDs.
- SRI sounding reference signal resource indicator
- PUSCH physical uplink shared channel
- FIG. 10 is a diagram showing an example of the configuration of a user terminal according to an 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, and the baseband signal may be output.
- 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 transmission unit and the reception unit of the user terminal 20 in the present disclosure may be composed of at least one of the transmission / reception unit 220, the transmission / reception antenna 230, and the transmission path interface 240.
- the transmission / reception unit 220 may receive a list indicating one or more serving cells.
- the control unit 210 receives a medium access control-control element (MAC CE) indicating one serving cell ID included in the list and a path loss reference signal (RS) -ID, the control unit 210 of the one or more serving cells.
- the path loss reference signal ID may be applied to each sounding reference signal (SRS) resource set.
- the MAC CE may include the SRS resource set ID, and the SRS resource set may have the SRS resource set ID.
- control unit 210 may apply the path loss reference signal ID to one or more SRS resource sets in each of the one or more serving cells.
- the control unit 210 may report capability information indicating that it supports the application.
- the transmission / reception unit 220 may receive a list indicating one or more serving cells.
- the control unit 210 indicates a medium indicating one serving cell ID included in the list, a path loss reference signal ID, and one or more sounding reference signal resource indicator (SRI) -physical uplink shared channel (PUSCH) power control IDs.
- SRI sounding reference signal resource indicator
- PUSCH physical uplink shared channel
- the SRI-PUSCH power control ID set between the one or more serving cells may be the same, and the path loss reference signal ID set between the one or more serving cells may be the same.
- the SRI-PUSCH power control ID set or activated or instructed may be the same among the one or more serving cells.
- the control unit 210 may report capability information indicating that it supports the application.
- 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. 11 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 by 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 is, for example, subcarrier interval (SubCarrier Spacing (SCS)), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval (TTI)), number of symbols per TTI, 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 domain (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. The 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, and 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 TTI, the symbol length, the cyclic prefix (CP) length, and other configurations 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 whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
- Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
- 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 Remote Radio Head
- the term "cell” or “sector” refers to a portion 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.
- the words such as "up” and “down” may be read as words corresponding to the 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, an integer or a 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
- UMB Ultra Mobile Broadband
- LTE 802.11 Wi-Fi®
- LTE 802.16 WiMAX®
- LTE 802.20 Ultra-WideBand (UWB), Bluetooth®, and other suitable radios.
- UMB Ultra Mobile Broadband
- 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)” of solving, selecting, selecting, establishing, comparing, and the like. 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。
DL/ULビーム管理において、より低いレイテンシ、より低いオーバーヘッドなど、より効率的なビーム管理が検討されている。
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。これによって低いオーバヘッド及び低いレイテンシのビーム指示を実現できる。
UEは、SRS一設定情報要素(SRS-Positioning-Config)によって設定されるSRS送信を除く全てのPUSCH/PUCCH/SRS送信に対してサービングセル当たり4より多いパスロス推定を同時に維持することを想定しない。
UEは、PUSCHパスロス参照RS情報要素(PUSCH-PathlossReferenceRS)によって、PUSCHパスロス参照RS最大数(maxNrofPUSCH-PathlossReferenceRSs)までの数のRSリソースインデックスと、それらのRSリソースインデックスに対するRS設定のセットと、を設定されてもよい。UEは、PUSCHパスロス参照RS情報要素内のPUSCHパスロス参照RS-ID(PUSCH-PathlossReferenceRS-Id)として提供されるSS/PBCHブロックインデックス又はCSI-RSリソースインデックスに対応するRSリソースインデックスqdを識別する。
UEは、PUCCHパスロス参照RS情報要素(PUCCH-PathlossReferenceRS)内のPUCCHパスロス参照R-ID(PUCCH-PathlossReferenceRS-Id)によって提供されるSS/PBCHブロックインデックス又はCSI-RSリソースインデックスに対応するRSリソースインデックスqdを識別する。
SRS/PUSCH/PUCCHに対し、複数のBWP/CCにおけるPL-RSが、MAC CE又はDCIによって同時に更新されてもよい。次のBWP/CC1から4のいずれかのBWP/CCのPL-RSが同時に更新されてもよい。
[BWP/CC1]設定されたCCリスト内の全てのBWP/CC
[BWP/CC2]1つのCC内の全てのBWP
[BWP/CC3]1つの周波数バンド内の全てのBWP/CC
[BWP/CC4]全ての設定された/アクティブなBWP/CC
UEは、サービングセル/CCのセットに対し、MAC CEを介するSRS用の同時PL-RS更新をサポートしてもよい。
もし同時QCL更新用にサービングセルの2つのセット(リスト)が設定され、且つUEが、1つのセットに属する1つのサービングセルの1つのSRSリソースセットに対するPL-RS更新用のSRSパスロス参照RS更新MAC CEを受信する場合、このMAC CEは、そのセット内の全てのサービングセル内の1つ又は複数のSRSリソースセットに適用されてもよい。MAC CEによって指示されるPL-RSは、次のオプション1及び2のいずれかに従ってもよい。
指示されるPL-RSは、SRSの同じタイプ(時間ドメイン動作)に適用されてもよい。例えば、指示されるPL-RSがAP-SRSである場合、全ての/他のAP-SRSリソースのPL-RSが更新されてもよい。
指示されるPL-RSは、SRSの全てのタイプ(時間ドメイン動作)に適用されてもよい。例えば、指示されるPL-RSがAP-SRSである場合、全ての/他のAP/SP/P-SRSリソースのPL-RSが更新されてもよい。
UEは、サービングセル/CCのセットに対し、MAC CEを介するPUSCH用の同時PL-RS更新をサポートしてもよい。
MAC CEを介してサービングセル/CCのセットに対するSRS用の同時PL-RS更新をサポートするか否かを示すためのUE能力(capability)シグナリング(UE能力情報)が仕様に規定されてもよい。SRSは、P-SRSとSP-SRSとAP-SRSとの少なくとも1つのリソースセットであってもよい。
次の設定1及び2の少なくとも1つが設定された場合、第1及び第2の実施形態の機能が適用されてもよい。
PL-RSの同時更新のために、適用可能なBWP/CCのリストが(RRCパラメータとして)設定されてもよい。このリストは、同時パスロス参照RS更新リストと、第1同時パスロス参照RS更新リストと、第2同時パスロス参照RS更新リストと、の少なくとも1つであってもよい。
PL-RSの同時更新のために、適用可能なBWP/CCのリストが設定されなくてもよい。PDCCH/PDSCH用のTCI状態の同時更新用の適用可能なBWP/CCのリストと、SRS用の空間関係の同時更新用の適用可能なBWP/CCのリストと、のいずれかのリストが(RRCパラメータとして)設定されてもよい。このリストは、Rel.16の同時更新に用いられてもよい。
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9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10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)
- 1以上のサービングセルを示すリストを受信する受信部と、
前記リストに含まれる1つのサービングセルIDと、パスロス参照信号IDと、を示すmedium access control-control element(MAC CE)が受信された場合、前記1以上のサービングセルのそれぞれのサウンディング参照信号(SRS)リソースセットに対して前記パスロス参照信号IDを適用する制御部と、を有する端末。 - 前記MAC CEは、SRSリソースセットIDを含み、
前記SRSリソースセットは、前記SRSリソースセットIDを有する、請求項1に記載の端末。 - 前記MAC CEが受信された場合、前記制御部は、前記1以上のサービングセルのそれぞれにおける1以上のSRSリソースセットに前記パスロス参照信号IDを適用する、請求項1に記載の端末。
- 前記制御部は、前記適用をサポートすることを示す能力情報を報告する、請求項1から請求項3のいずれかに記載の端末。
- 1以上のサービングセルを示すリストを受信するステップと、
前記リストに含まれる1つのサービングセルIDと、パスロス参照信号IDと、を示すmedium access control-control element(MAC CE)が受信された場合、前記1以上のサービングセルのそれぞれのサウンディング参照信号(SRS)リソースセットに対して前記パスロス参照信号IDを適用するステップと、を有する、端末の無線通信方法。 - 1以上のサービングセルを示すリストを送信する送信部と、
前記リストに含まれる1つのサービングセルIDと、パスロス参照信号IDと、を示すmedium access control-control element(MAC CE)が送信された場合、前記1以上のサービングセルのそれぞれのサウンディング参照信号(SRS)リソースセットに対して前記パスロス参照信号IDを適用する制御部と、を有する基地局。
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| KR20230012340A (ko) * | 2021-07-15 | 2023-01-26 | 삼성전자주식회사 | 무선 통신 시스템에서 복수의 trp에 대한 채널 경로손실 측정을 설정하기 위한 방법 및 장치 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010151196A1 (en) * | 2009-06-26 | 2010-12-29 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement in a wireless communications network for adaptation of power control setting |
| WO2019030928A1 (ja) * | 2017-08-10 | 2019-02-14 | 株式会社Nttドコモ | ユーザ端末及び無線通信方法 |
| JP7064006B2 (ja) * | 2018-02-15 | 2022-05-09 | テレフオンアクチーボラゲット エルエム エリクソン(パブル) | セミパーシステントsrsのための空間的関係の効率的なmac ceインジケーション |
| US10986585B2 (en) * | 2018-05-10 | 2021-04-20 | Asustek Computer Inc. | Method and apparatus for triggering power headroom report for multiple pathloss reference in a wireless communication system |
| US10887843B2 (en) * | 2018-05-11 | 2021-01-05 | Lenovo (Singapore) Pte. Ltd. | Method and apparatus for transmitting an uplink transmission based on a pathloss estimate |
| WO2020121528A1 (ja) * | 2018-12-14 | 2020-06-18 | 株式会社Nttドコモ | ユーザ端末及び無線通信方法 |
| US10856237B2 (en) * | 2019-02-14 | 2020-12-01 | Ofinno, Llc | Power control with multiple panels in a radio system |
| CN114223267B (zh) * | 2019-06-13 | 2024-04-02 | 株式会社Ntt都科摩 | 终端以及无线通信方法 |
| US12058624B2 (en) * | 2019-06-21 | 2024-08-06 | Ntt Docomo, Inc. | Terminal and radio communication method |
| WO2021028059A1 (en) * | 2019-08-15 | 2021-02-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Uplink beamforming framework for advanced 5g networks |
| EP3864905B1 (en) * | 2019-11-07 | 2025-03-26 | Samsung Electronics Co., Ltd. | Method and apparatus for dynamically configuring channel loss measurement in next-generation mobile communication system |
| US12256336B2 (en) * | 2019-11-08 | 2025-03-18 | Ntt Docomo, Inc. | Terminal and a radio communication method in next-generation mobile communication systems |
| US11239927B2 (en) * | 2019-11-21 | 2022-02-01 | Qualcomm Incorporated | RRC indication to enable pathloss reference signal updates via MAC-CE |
| BR112022013075A2 (pt) * | 2020-01-03 | 2022-09-06 | Lenovo Beijing Ltd | Mac ce para configurar sinal de referência de perda de percurso para pusch |
| CN115104355B (zh) * | 2020-02-14 | 2025-11-04 | 株式会社Ntt都科摩 | 终端、无线通信方法以及基站 |
| CN115380491B (zh) * | 2020-04-08 | 2024-05-28 | 苹果公司 | 用于多载波波束选择和功率控制的开销减少 |
-
2020
- 2020-07-17 CN CN202080105285.9A patent/CN116158153A/zh active Pending
- 2020-07-17 JP JP2022536087A patent/JPWO2022014032A1/ja active Pending
- 2020-07-17 US US18/004,986 patent/US12464536B2/en active Active
- 2020-07-17 WO PCT/JP2020/027807 patent/WO2022014032A1/ja not_active Ceased
-
2025
- 2025-01-29 JP JP2025013063A patent/JP2025066158A/ja active Pending
Non-Patent Citations (4)
| Title |
|---|
| ERICSSON: "On SRS activation/deactivation MAC CE for the list of serving cells", 3GPP DRAFT; R2-2004464, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. 20200601 - 20200612, 21 May 2020 (2020-05-21), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051887364 * |
| QUALCOMM INCORPORATED: "Enhancements on Multi-beam Operation", 3GPP DRAFT; R1-2006790, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. 20200817 - 20200828, 8 August 2020 (2020-08-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051918240 * |
| SAMSUNG: "Offline Discussion 112 : EMIMO MAC Corrections", 3GPP DRAFT; R2-2003891, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Electronic; 20200420 - 20200424, 1 May 2020 (2020-05-01), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051879258 * |
| ZTE: "Enhancements on multi-beam operation", 3GPP DRAFT; R1-1911931, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, US; 20191118 - 20191122, 9 November 2019 (2019-11-09), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051823112 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024022346A1 (zh) * | 2022-07-29 | 2024-02-01 | 上海朗帛通信技术有限公司 | 一种被用于无线通信的节点中的方法和装置 |
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| US12464536B2 (en) | 2025-11-04 |
| JPWO2022014032A1 (ja) | 2022-01-20 |
| JP2025066158A (ja) | 2025-04-22 |
| US20230254877A1 (en) | 2023-08-10 |
| CN116158153A (zh) | 2023-05-23 |
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