WO2023162435A1 - 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
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Definitions
- the present disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems.
- LTE Long Term Evolution
- 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).
- LTE successor systems for example, 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later
- 5G 5th generation mobile communication system
- 5G+ 5th generation mobile communication system
- 6G 6th generation mobile communication system
- NR New Radio
- TRP transmission/reception points
- multi-TRP multi-TRP
- DL transmission for example, downlink shared channel (for example, PDSCH) transmission
- UE user equipment
- transmission/reception of multiple signals/channels eg, multi-PDSCH
- multiple transmission/reception points e.g., multi-PDSCH
- one or more downlink control information eg, DCI
- downlink control channel eg, PDCCH
- DCI downlink control information
- PDCCH downlink control channel
- the present disclosure utilizes one DCI (or PDCCH), a terminal capable of appropriately communicating even when multiple DL transmissions are transmitted / scheduled from one or more TRPs, radio
- DCI or PDCCH
- a terminal capable of appropriately communicating even when multiple DL transmissions are transmitted / scheduled from one or more TRPs, radio
- One object is to provide a communication method and a base station.
- a terminal includes a receiving unit that receives information about the transmission direction of symbols included in a slot, and a downlink sharing to which a Time Division Multiplexing (TDM) scheme is applied in the slot. and a controller that assumes that, if multiple repeated transmissions of a channel are configured, at least one of said multiple repeated transmissions does not overlap with a UL symbol.
- TDM Time Division Multiplexing
- one DCI (or PDCCH) can be used to properly communicate even when multiple DL transmissions are transmitted/scheduled from one or more TRPs. .
- FIG. 1 is a diagram showing an example of schedule control of physical shared channels based on PDCCH/DCI.
- 2A-2D are diagrams illustrating an example of a multi-TRP scenario.
- Figures 3A-3C are shown in Rel.
- FIG. 15 is a diagram showing an example of generating a type 1 HARQ-ACK codebook for 15 NR;
- FIG. 4 shows Rel.
- 16 is a diagram showing an example of repeated transmission of PDSCH in 16 NR;
- FIG. 5 shows an example of multi-PDSCH scheduling in single DCI-based multi-TRP (single DCI based MTRP PDSCH with tdmschemeA + multi-PDSCH scheduling).
- FIG. 6 is a diagram illustrating an example of type 1 HARQ-ACK feedback.
- FIG. 15 is a diagram showing an example of generating a type 1 HARQ-ACK codebook for 15 NR
- FIG. 4 shows Rel.
- 16 is a diagram showing an example of
- FIG. 7 is a diagram showing an example of a PDSCH valid/invalid determination method based on SLIV and UL symbols in the present embodiment.
- FIG. 8 is a diagram showing another example of a PDSCH valid/invalid determination method based on SLIV and UL symbols in the present embodiment.
- 9A to 9C are diagrams showing another example of the PDSCH valid/invalid determination method based on SLIV and UL symbols in this embodiment.
- FIG. 10 is a diagram illustrating an example of a schematic configuration of a radio communication system according to an embodiment.
- FIG. 11 is a diagram illustrating an example of the configuration of a base station according to one embodiment.
- FIG. 12 is a diagram illustrating an example of the configuration of a user terminal according to one embodiment.
- FIG. 13 is a diagram illustrating an example of hardware configurations of a base station and user terminals according to an embodiment.
- FIG. 14 is a diagram illustrating an example of a vehicle according to one embodiment;
- time-domain resource allocation information for a physical shared channel (at least one of PDSCH and PUSCH) is included in downlink control information (DCI).
- the network e.g., base station
- utilizes a predetermined field e.g., TDRA field
- TDRA field included in the DCI to inform the UE of information regarding the time-domain resource on which the physical shared channel scheduled in that DCI is scheduled.
- Information about the time-domain resources for example, information indicating the offset between the DCI and the physical shared channel (e.g. slot offset K0), information indicating the starting symbol (e.g. starting symbol S), and length of the physical shared channel. It may include at least one of information (eg length L).
- Each bit information (or code point) notified in the TDRA field may be associated with a different time domain resource allocation candidate (or entry).
- a table eg, TDRA table
- each bit information is associated with a time domain resource allocation candidate (K0, S, L).
- the time domain resource allocation candidates may be predefined in the specification or may be signaled/configured to the UE via higher layer signaling.
- the UE may determine the row index (entry number or entry index) in a given table based on the value of the TDRA field in the DCI (eg DCI format 1_0/1_1/1_2).
- the predetermined table includes information indicating the time offset (eg, slot offset K0) between the DCI and the PDSCH scheduled by the DCI, information indicating the PDSCH mapping type, PDSCH start symbol S and time length L. may include at least one of The combination of the PDSCH starting symbol S and time length L may be referred to as the Start and Length Indicator (SLIV).
- the UE determines the time domain in which the PDSCH is scheduled based on at least one of the values of the predetermined fields included in the DCI, the slot offset K0 information defined in the table, the mapping type, the start symbol S, the symbol length L, and SLIV.
- a resource may be determined (see FIG. 1). Note that the reference points for the start symbol S and the symbol length L may be controlled based on the slot start position (leading symbol). Also, the start symbol S, symbol length L, etc. may be defined according to the PDSCH mapping type.
- a UE uses DCI (or a PDCCH used to transmit DCI) as a reference point in the time domain to determine a slot in which a PDSCH is scheduled. For example, when the UE receives DCI for scheduling PDSCH in slot #n, at least the number n of the slot, the subcarrier interval ⁇ PDSCH for PDSCH, the subcarrier interval ⁇ PDCCH for PDCCH, and the time offset K0 Based on one, the slot in which the PDSCH is received (assigned to the PDSCH) may be determined.
- slot offset K0 1 and the subcarrier intervals of PDSCH and PDCCH are the same.
- the UE determines allocation of the PDSCH with reference to the starting point of the slot to which the PDSCH is allocated, for the resource allocation information (eg, SLIV) specified in the TDRA field.
- the reference point may also be called a reference point or a reference point.
- the UE may determine the row index (entry number or entry index) in a given table based on the value of the TDRA field in the DCI (eg DCI format 0_0/0_1/0_2).
- the predetermined table includes DCI and information indicating the time offset (eg, slot offset K2) between PUSCH scheduled by the DCI, information indicating PUSCH mapping type, PUSCH start symbol S and time length L may include at least one of The combination of the PUSCH start symbol S and time length L may be called the Start and Length Indicator (SLIV).
- the UE determines the time domain in which the PUSCH is scheduled based on at least one of the value of a predetermined field included in the DCI, the slot offset K2 information defined in the table, the mapping type, the start symbol S, the symbol length L, and SLIV.
- a resource may be determined (see FIG. 1). Note that the reference points for the start symbol S and the symbol length L may be controlled based on the slot start position (leading symbol). Also, the start symbol S, symbol length L, etc. may be defined according to the PDSCH mapping type.
- a UE determines a slot in which a PUSCH is scheduled using DCI (or a PDCCH used to transmit DCI) as a reference point in the time domain. For example, when the UE receives DCI for scheduling PUSCH in slot #n+4, at least the number n+4 of the slot, the subcarrier interval ⁇ PDSCH for PUSCH, the subcarrier interval ⁇ PDCCH for PUCCH, and the time offset K2 Based on one, it may determine the slot (assigned to PUSCH) to transmit the PUSCH.
- slot offset K2 3 and the subcarrier intervals of PDSCH and PDCCH are the same.
- the UE determines allocation of the PUSCH with reference to the starting point of the slot to which the PUSCH is allocated for resource allocation information (eg, SLIV) specified in the TDRA field.
- resource allocation information eg, SLIV
- Multi-TRP In NR, one or more transmission/reception points (TRP) (multi-TRP) uses one or more panels (multi-panel) to perform DL transmission to the UE. It is It is also being considered for UEs to perform UL transmissions on one or more TRPs.
- TRP transmission/reception points
- a plurality of TRPs may correspond to the same cell identifier (cell identifier (ID)) or may correspond to different cell IDs.
- the cell ID may be a physical cell ID or a virtual cell ID.
- FIGS 2A-2D are diagrams showing an example of a multi-TRP scenario.
- each TRP is assumed to be capable of transmitting four different beams, but is not limited to this.
- FIG. 2A shows an example of a case (which may also be called single mode, single TRP, etc.) in which only one TRP (TRP1 in this example) of the multi-TRPs transmits to the UE.
- TRP1 transmits both control signals (PDCCH) and data signals (PDSCH) to the UE.
- PDCCH control signals
- PDSCH data signals
- FIG. 2B shows a case where only one TRP (TRP1 in this example) among the multi-TRPs transmits control signals to the UE, and the multi-TRP transmits data signals (may be called single master mode).
- TRP1 TRP1 in this example
- DCI downlink control information
- FIG. 2C shows an example of a case (which may be called master-slave mode) in which each of the multi-TRPs transmits part of the control signal to the UE, and the multi-TRP transmits the data signal.
- Part 1 of the control signal (DCI) may be transmitted in TRP1
- part 2 of the control signal (DCI) may be transmitted in TRP2.
- Part two of the control signal may depend on part one.
- the UE receives each PDSCH transmitted from the multi-TRP based on these DCI parts.
- FIG. 2D shows an example of a case (which may be called multi-master mode) in which each of the multi-TRPs transmits separate control signals to the UE and the multi-TRPs transmit data signals.
- a first control signal (DCI) may be transmitted in TRP1
- a second control signal (DCI) may be transmitted in TRP2.
- the UE receives each PDSCH transmitted from the multi-TRP based on these DCIs.
- the DCI is a single DCI (S-DCI, single PDCCH). Also, when multiple PDSCHs from multiple TRPs as shown in FIG. 2D are each scheduled using multiple DCIs, these multiple DCIs are called multiple DCIs (M-DCI, multiple PDCCH (multiple PDCCH)). may be
- a different transport block (TB)/code word (CW)/different layer may be transmitted from each TRP of the multi-TRP.
- the same TB/CW/layer may be transmitted from each TRP of the multi-TRP.
- Non-Coherent Joint Transmission is being considered as one form of multi-TRP transmission.
- TRP1 modulate-maps a first codeword and layer-maps a first number of layers (eg, two layers) with a first precoding to transmit a first PDSCH.
- TRP2 also modulates and layer-maps the second codeword to transmit a second PDSCH with a second number of layers (eg, 2 layers) with a second precoding.
- multiple PDSCHs to be NCJTed may be defined as partially or completely overlapping in at least one of the time and frequency domains. That is, the first PDSCH from the first TRP and the second PDSCH from the second TRP may overlap at least one of time and frequency resources.
- first PDSCH and second PDSCH are not quasi-co-located (QCL).
- Reception of multiple PDSCHs may be translated as simultaneous reception of PDSCHs that are not of a certain QCL type (eg, QCL type D).
- PDSCH transport block (TB) or codeword (CW) repetition across multi-TRPs.
- repetition schemes URLLC schemes, eg schemes 1, 2a, 2b, 3, 4
- SDM space division multiplexed
- FDM frequency division multiplexed
- RV redundancy version
- the RVs may be the same or different for the multi-TRPs.
- multiple PDSCHs from multiple TRPs are time division multiplexed (TDM).
- TDM time division multiplexed
- multiple PDSCHs from multiple TRPs are transmitted within one slot.
- multiple PDSCHs from multiple TRPs are transmitted in different slots.
- NCJT using multi-TRP/panel may use high rank.
- single DCI single PDCCH, e.g., FIG. 2B
- multi-DCI multiple PDCCH, e.g. , FIG. 2D
- the maximum number of TRPs may be two for both single DCI and multi-DCI.
- TCI to the single PDCCH design (mainly for ideal backhaul)
- Each TCI codepoint within the DCI may correspond to one or two TCI states.
- the TCI field size is Rel. 15 may be the same.
- HARQ-ACK codebook The UE transmits HARQ-ACK feedback using one PUCCH resource in units of HARQ-ACK codebooks composed of bits of one or more acknowledgment information (eg, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK)). You may The HARQ-ACK bits may also be called HARQ-ACK information, HARQ-ACK information bits, and so on.
- HARQ-ACK codebook composed of bits of one or more acknowledgment information (eg, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK)).
- HARQ-ACK bits may also be called HARQ-ACK information, HARQ-ACK information bits, and so on.
- the HARQ-ACK codebook includes time domain (eg, slot), frequency domain (eg, Component Carrier (CC)), spatial domain (eg, layer), transport block (TB )), and bits for HARQ-ACK in at least one unit of a code block group (CBG) constituting a TB.
- CBG code block group
- the number of bits (size) and the like included in the HARQ-ACK codebook may be determined semi-statically or dynamically.
- a semi-statically sized HARQ-ACK codebook is also called a semi-static HARQ-ACK codebook, a type 1 HARQ-ACK codebook, and so on.
- a dynamically sized HARQ-ACK codebook is also called a dynamic HARQ-ACK codebook, a type 2 HARQ-ACK codebook, and so on.
- Whether to use the type 1 HARQ-ACK codebook or the type 2 HARQ-ACK codebook may be configured in the UE using a higher layer parameter (eg, pdsch-HARQ-ACK-Codebook).
- a higher layer parameter eg, pdsch-HARQ-ACK-Codebook
- the UE may select PDSCH candidates (or PDSCH opportunities) corresponding to the range regardless of whether PDSCH is scheduled or not. (occasion)) may be fed back.
- the range is a period of time (e.g., a set of a specific number of opportunities for candidate PDSCH reception, or a specific number of monitoring opportunities for the Physical Downlink Control Channel (PDCCH)) ( monitoring occasion)), the number of CCs configured or activated in the UE, the number of TBs (number of layers or ranks), the number of CBGs per TB, and whether or not spatial bundling is applied.
- the specific range is also called HARQ-ACK window, HARQ-ACK bundling window, HARQ-ACK feedback window, and so on.
- the UE reserves HARQ-ACK bits for the PDSCH in the codebook even if there is no PDSCH scheduling for the UE. If the UE determines that the PDSCH is not actually scheduled, the UE can feed back the bit as a NACK bit.
- the UE may feed back the HARQ-ACK bits for the scheduled PDSCH in the above specified range.
- the UE determines the HARQ-ACK codebook for PDSCH for one or more slots to transmit using a certain PUCCH based on the HARQ-ACK timing values.
- the HARQ-ACK transmission timing for the dynamic PDSCH (PDSCH-to-HARQ feedback timing, K1, etc.) is included in the DCI that schedules the dynamic PDSCH (eg, DCI format 1_0/1_1). may be indicated by the PDSCH-to-HARQ Feedback Timing Indicator field.
- n be the last slot in which a certain PDSCH was received, then the UE transmits HARQ-ACK corresponding to that PDSCH in n+K 1 slots.
- the UE determines the size of the semi-static HARQ-ACK codebook window (which may be referred to as the HARQ-ACK window) to transmit on the PUCCH for a slot based on the number of slots with the same value of n+ K1 .
- the UE determines candidate PDSCH reception opportunities (also referred to as candidate PDSCH opportunities, simply opportunities) for each slot corresponding to the HARQ-ACK window. Note that candidate PDSCH opportunities that overlap with UL symbols are excluded from the semi-static HARQ-ACK codebook.
- FIG. 15 is a diagram showing an example of generating a type 1 HARQ-ACK codebook for 15 NR;
- FIG. 3A shows an example list of time domain resource allocations for the PDSCH that the UE is configured with or specified in the specification.
- the row index r in the figure corresponds to the value of the time domain resource allocation field contained in the DCI.
- K 0 indicates the number of symbols from PDCCH (DCI) reception to PDSCH reception.
- Start indicates the index S of the start symbol in the PDSCH slot.
- Length indicates the length (number of symbols) of PDSCH.
- the mapping type indicates the PDSCH resource allocation type (A or B).
- FIG. 3B shows candidate PDSCH opportunities corresponding to the list of FIG. 3A.
- the UE excludes/deletes candidate PDSCH opportunities that overlap with UL symbols (eg, symbols configured as UL by higher layer parameters).
- UL symbols eg, symbols configured as UL by higher layer parameters.
- j is an index indicating which bit of the HARQ-ACK codebook to be transmitted corresponds to.
- FIG. 3C is a diagram showing each bit of the HARQ-ACK codebook corresponding to FIG. 3B.
- FIG. 3C shows a total of 4 bits from o 0 ACK to o 3 ACK .
- the tilde ( ⁇ ) attached above "o" in o k ACK (k is an integer) is omitted, but this means that the tilde as shown in the drawing is omitted.
- the attached notations can be read interchangeably.
- FIG. 3C shows the contents of the HARQ-ACK codebook corresponding to only one slot in FIG. , the number of bits in the HARQ-ACK codebook may be different from that in FIG. 3C.
- repeated transmission of PDSCH is under consideration. For example, for PDSCH transmission with multiple Transmission/Reception Points (TRP) (multi-TRP) or multiple panels (multi-panel), repeated transmission of PDSCH may be performed.
- TRP Transmission/Reception Points
- multi-TRP multi-TRP
- multi-panel multiple panels
- UE uses frequency division multiplexing (FDM) scheme A ('FDMSchemeA'), FDM scheme B ('FDMSchemeB'), time At least one such as Time Division Multiplexing (TDM) scheme A ('TDMSchemeA') may be set.
- FDM frequency division multiplexing
- TDM Time Division Multiplexing
- the UE set TDM scheme A is specified two TCI states in the code points of the DCI transmission configuration indication (TCI) field, In each TCI state associated with a PDSCH transmission opportunity, two PDSCH transmission opportunities of the same TB are received.
- one of the two PDSCH transmission opportunities has non-overlapping time domain resource allocations with respect to the other.
- both of the two PDSCH transmission opportunities are received within a slot.
- the PDSCH transmission opportunity may be read as the PDSCH reception opportunity.
- a UE configured with TDM scheme A and assigned two TCI states expects to receive two PDSCH transmission opportunities.
- the first TCI state is applied to the first PDSCH transmission opportunity
- the second TCI state is applied to the second PDSCH transmission opportunity.
- These two PDSCH transmission opportunities correspond to TDM scheme A repeated transmissions.
- the time domain resource allocation for the first PDSCH transmission opportunity may be determined according to the DCI time domain resource allocation field.
- the time-domain resource allocation for the second PDSCH transmission opportunity may have the same number of symbols as the first PDSCH transmission opportunity.
- the UE may determine that the first symbol of the second PDSCH transmission opportunity starts some number of symbols after the last symbol of the first PDSCH transmission opportunity.
- the certain number of symbols may be given by an upper layer parameter (StartingSymbolOffsetK) or may be assumed by the UE to be 0 if the upper layer parameter is not given.
- a UE may not expect to receive more than two PDSCH transmission layers for each PDSCH transmission opportunity.
- Fig. 4 shows the Rel. 16 is a diagram showing an example of repeated transmission of PDSCH in 16 NR; FIG.
- a UE configured with TDM scheme A receives a DCI that schedules repeated transmissions of PDSCHs (PDSCH #1, #2) in a certain slot, and receives these PDSCHs according to the DCI. do.
- PDSCH #1 and #2 may be the same TB.
- the StartingSymbolOffsetK is not given to the UE, and the transmission of PDSCH#2 is started from the symbol immediately after PDSCH#1.
- Multi PDSCH Rel. 17 NR and later, support for multiple PDSCHs scheduled by a single DCI (multi-PDSCH) is being considered. For example, it is assumed that single TRP based multi-PDSCH (S-TRP based multi-PDSCH) and multi-TRP based multi-PDSCH (M-TRP based multi-PDSCH) are supported.
- S-TRP based multi-PDSCH single TRP based multi-PDSCH
- M-TRP based multi-PDSCH multi-TRP based multi-PDSCH
- DCI eg, single DCI
- TCI notification eg, Transmission Configuration Indication
- a single DCI field is defined in Rel.
- the TCI status indication mechanism for 16 multi-TRPs may be reused.
- a single DCI field may indicate one or more (eg, two) TCI states associated with a codepoint for a single DCI-based multi-TRP mechanism.
- multi-PDSCH for example, S-DCI M-TRP multi-PDSCH
- single DCI in multi-TRP can be considered.
- FIG. 5 shows an example of multi-PDSCH scheduling in single DCI-based multi-TRP.
- TDM scheme A tdmschemeA
- PDSCH repetition for example, PDSCH repetition
- a single DCI field may indicate one or two TCI states associated with a single DCI-based multi-TRP mechanism codepoint.
- the UE needs to receive two PDSCH repetitions of the same transport block (TB) for each scheduled PDSCH.
- Two PDSCH repetitions (or TBs respectively corresponding to two PDSCH repetitions) may have each TCI state associated with a PDSCH transmission opportunity in the same slot.
- the first repetition (eg, Rep#1) and the second repetition (eg, Rep#2) in the slot are read as the first PDSCH transmission opportunity and the second PDSCH transmission opportunity in the slot.
- the PDSCH (second PDSCH repetition) corresponding to the second repetition has the same number of symbols as the PDSCH (first PDSCH repetition) corresponding to the first repetition (eg, Rep#1). May be applied/set. That is, within the same slot, the number of symbols for the first PDSCH transmission opportunity and the number of symbols for the second PDSCH transmission opportunity may be set in common.
- the starting symbol of the second PDSCH transmission opportunity is a predetermined symbol from the last symbol of the first PDSCH transmission opportunity. (eg, K - symbols) later.
- the starting symbol offset (eg, K ⁇ ) may be signaled/configured from the base station to the UE using higher layer parameters (eg, StartingSymbolOffsetK).
- a predetermined offset (e.g., starting symbol offset (e.g., K ⁇ )) is commonly applied to multiple PDSCHs (e.g., first and second repetitions of each slot) scheduled in one DCI.
- HARQ-ACK feedback for multiple PDSCH schedules For HARQ-ACK feedback for multiple PDSCH schedules, a type 1 HARQ-ACK codebook without time domain bundling may be applied.
- the set of DL slots is determined by considering all combinations of the configured K1 value and the configured row of the TDRA table. All slots (unique DL slots) may be included.
- the set of SLIV corresponding to the DL slot is, as described above, all combinations of the set value of K1 and the set row of the TDRA table. may be included for all SLIVs for that slot, determined taking into account
- FIG. 6 shows an example of HARQ-ACK feedback (or HARQ-ACK codebook generation) considering SLVs in multiple slots.
- Rel. 16 procedures may be reused.
- the 16 procedures may include, for example, pruning multiple SLIVs corresponding to DL slots for both UEs capable of receiving multiple PDSCHs per slot and UEs that are not.
- a SLIV may be deleted if it overlaps a given UL symbol.
- the predetermined UL symbol may be, for example, a UL symbol (semi-static UL symbol) set semi-statically by higher layer parameters or the like.
- the problem is how to control each PDSCH repetition transmission. For example, for each repeated transmission, the problem is how to determine whether the PDSCH is valid/invalid considering TDD collisions (for example, collisions with UL symbols). Alternatively, the problem is how to control HARQ-ACK feedback for PDSCH.
- the present inventors studied the relationship between each PDSCH and UL symbols when performing multi-PDSCH scheduling in single DCI-based multi-TRP, and conceived of the present embodiment.
- Each PDSCH may be a PDSCH included in the same symbol (or a PDSCH used for transmission of the same TB).
- the UL symbol may be a UL symbol that is semi-statically configured (eg, by higher layer parameters).
- A/B may mean “at least one of A and B”.
- A/B/C may mean “at least one of A, B and C.”
- cell, serving cell, CC, carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, band may be read interchangeably.
- index, ID, indicator, and resource ID may be read interchangeably.
- supporting, controlling, controllable, operating, and capable of operating may be read interchangeably.
- configure, activate, update, indicate, enable, specify, and select may be read interchangeably.
- higher layer signaling may be, for example, 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 (IEs), RRC messages may be read interchangeably.
- Broadcast information includes, for example, Master Information Block (MIB), System Information Block (SIB), Remaining Minimum System Information (RMSI), and other system information ( It may be Other System Information (OSI).
- MIB Master Information Block
- SIB System Information Block
- RMSI Remaining Minimum System Information
- OSI System Information
- MAC CE and activation/deactivation commands may be read interchangeably.
- the assumed QCL type A RS, spatial relationship, spatial domain transmit filter, UE spatial domain transmit filter, UE transmit beam, UL beam, UL transmit beam, UL precoding, UL precoder, PL-RS may be read interchangeably. good.
- QCL type X-RS, DL-RS associated with QCL type X, DL-RS with QCL type X, source of DL-RS, SSB, CSI-RS, SRS may be read interchangeably. good.
- the panel Uplink (UL) transmitting entity, TRP, spatial relationship, control resource set (COntrol REsource SET (CORESET)), PDSCH, codeword, base station, antenna port of a signal (e.g., reference signal for demodulation (DeModulation Reference Signal (DMRS) port), antenna port group for a signal (e.g. DMRS port group), group for multiplexing (e.g. Code Division Multiplexing (CDM) group, reference signal group, CORESET group), CORESET pool, CORESET subset, CW, redundancy version (RV), layers (MIMO layer, transmission layer, spatial layer) may be read interchangeably. Also, panel identifier (ID) and panel may be read interchangeably.
- DMRS DeModulation Reference Signal
- the TRP ID, the TRP related ID, the CORESET pool index, the position of one of the two TCI states corresponding to one codepoint of the field in the DCI (ordinal number, first TCI state or second TCI state ) and TRP may be read interchangeably.
- SRI SRS Resource Indicator
- a panel may be associated with at least one of a panel ID, a UL TCI state, a UL beam, an L beam, a DL RS resource, and spatial relationship information.
- multiple TCI state/spatial relationships enabled by RRC/DCI and/or multi-TRP based on single DCI and multi-TRP based on multiple DCIs may be read interchangeably.
- multi-TRPs based on multi-DCI setting a CORESET pool index (CORESETPoolIndex) value of 1 for a CORESET, may be read interchangeably.
- multiple TRPs based on a single DCI, where at least one codepoint of a TCI field is mapped to two TCI states may be read interchangeably.
- CORESETPoolIndex CORESET Pool Index
- switch In the present disclosure, “switch”, “determine”, and “select” may be read interchangeably.
- a single DCI multi-TRP in which a predetermined scheme here, a time multiplexing scheme (for example, tdmschemeA)
- a time multiplexing scheme for example, tdmschemeA
- Intra-slot multi-TRP PDSCH repetition may be configured from the base station to the UE by higher layer signaling.
- the intra-slot multi-TRP PDSCH repetition scheme (eg, tdmschemeA) may be configured by higher layer parameters (eg, RepSchemeEnabler).
- this embodiment is applicable when two TCI states are specified by the 'Transmission Configuration Indication' of the DCI field (or when at least one codepoint is mapped to two TCI states case) may be suitably applied.
- At least one of the following options 1-1 to 1-7 may be applied/supported for PDSCH scheduled by DCI for multi-PDSCH scheduling.
- Any repetition of the scheduled PDSCH may be controlled so as not to overlap with the configured UL symbols.
- Scheduled PDSCH repetitions correspond to repeated transmissions in the same slot (eg, Rep#1, Rep#2).
- the configured UL symbols may be read as semi-static UL symbols, semi-static UL symbols, or UL symbols configured by higher layer parameters.
- the UE may not expect/assume that the scheduled PDSCH repetitions overlap with the configured UL symbols.
- the base station may perform control so as not to schedule repeated transmission of the PDSCH for the time domain in which the UL symbol is set in the higher layer parameters.
- the base station may control to schedule repeated transmission of the PDSCH for a region different from the time region in which the UL symbol is set.
- Both repetitions of the scheduled PDSCH may be controlled so as not to overlap with the configured UL symbols.
- Both repetitions of PDSCH may be, for example, both the first repetition (Rep#1) and the second repetition (Rep#2) corresponding to PDSCH#x in the same symbol.
- the UE may not expect/assume that both repetitions of the scheduled PDSCH overlap with the configured UL symbols.
- the base station may perform control so as not to schedule repeated transmissions of both PDSCHs for time regions in which UL symbols are configured in higher layer parameters.
- the base station may control to schedule repeated transmissions of both PDSCHs in a region different from the time region in which the UL symbols are set.
- Certain repetitions of the scheduled PDSCH may be controlled so as not to overlap with the configured UL symbols.
- the specific repetition may be, for example, the first repetition (Rep#1) or the second repetition (Rep#2) corresponding to PDSCH#x within the same symbol.
- the UE may not expect/assume that a particular repetition of the scheduled PDSCH (eg, 1st repetition/2nd repetition) overlaps with the configured UL symbol.
- the base station may control not to schedule a specific repeated transmission of the PDSCH for the time domain in which the UL symbol is configured in the higher layer parameters.
- the base station may control to schedule a specific repeated transmission of the PDSCH for a region different from the time region in which the UL symbols are configured.
- One repetition of the scheduled PDSCH may be controlled to overlap with the configured UL symbol and the other repetition may be controlled not to overlap with the configured UL symbol.
- the UE may expect/assume that one repetition of the scheduled PDSCH overlaps the configured UL symbol and the other repetition does not overlap the configured UL symbol.
- the base station may schedule repeated transmission of one PDSCH and not schedule repeated transmission of the other PDSCH for the time domain in which the UL symbol is set in the higher layer parameter.
- the UE among repetitions of the PDSCH, the first repetition (Rep # 1) overlaps the configured UL symbol, the second repetition (Rep # 2) overlaps the configured UL symbol It may be expected/assumed that it does not wrap.
- the UE among repetitions of the PDSCH, the first repetition (Rep # 1) does not overlap with the configured UL symbol, the second repetition (Rep # 2) is configured with the UL symbol You may expect/assume overlap.
- the UE may determine that the scheduled PDSCH is invalid if any repetition of the scheduled PDSCH overlaps with the configured UL symbol.
- the UL symbol and the PDSCH overlap may be a case where at least one symbol corresponding to the PDSCH overlaps the UL symbol, or a predetermined number of symbols corresponding to the PDSCH (or a predetermined percentage) symbols overlap with UL symbols.
- a UE may determine that a scheduled PDSCH is invalid if a particular repetition of the scheduled PDSCH overlaps a configured UL symbol.
- the UE may determine that the scheduled PDSCH is invalid if both repetitions of the scheduled PDSCH overlap with the configured UL symbols. On the other hand, the UE determines that the scheduled PDSCH is valid if only one repetition of the scheduled PDSCH overlaps with the UL symbols (or if there are PDSCH repetitions that do not overlap with the UL symbols). You may
- the UE may not assume that conditions 1-1 to 1-3 are satisfied simultaneously when Type 1 HARQ-ACK codebook/feedback is configured.
- Condition 1-1 is that multi-PDSCH scheduling is set for the serving cell / BWP
- Condition 1-2 is that two TCI states / QCLs in the serving cell / BWP at the same time TCI codepoints (at least one codepoint) may be mapped
- conditions 1-3 may be that tdmAchemeA is set.
- any repetition of the scheduled PDSCH may be controlled so that it does not overlap with semi-static UL symbols.
- the UE shall ensure that any repetition of the scheduled PDSCH is It may not be expected to overlap with static UL symbols.
- both repetitions of the scheduled PDSCH may be controlled so that they do not overlap with semi-static UL symbols.
- the UE shall ensure that both repetitions of the scheduled PDSCH are: It may not be expected to overlap with semi-static UL symbols.
- a semi-static (eg, Type 1) HARQ-ACK codebook/feedback is configured, a particular repetition (eg, 1st/2nd repetition) of the scheduled PDSCH is a semi-static UL symbol. may be controlled so as not to overlap with
- the UE may indicate that a particular repetition of the scheduled PDSCH is It may not be expected to overlap with semi-static UL symbols.
- the UE shall ensure that one repetition of the scheduled PDSCH is semi- It may be assumed that the static UL symbol does not overlap and the other repetition overlaps the semi-static UL symbol.
- HARQ-ACK feedback (or HARQ-ACK codebook generation) for the PDSCH repetition
- HARQ-ACK codebook generation for the PDSCH repetition
- a single DCI multi-TRP in which a predetermined scheme (here, tdmschemeA) is set as an intra-slot multi-TRP PDSCH repetition will be taken as an example, but it is not limited to this.
- a semi-statically set HARQ-ACK codebook for example, type 1 HARQ-ACK codebook
- HARQ-ACK feedback will be described as an example. is not limited to
- At least one of the following options 2-1 to 2-3 may be applied/supported for PDSCH scheduled by DCI for multi-PDSCH scheduling.
- SLIV#x corresponding to the first repetition is indicated by DCI/higher layer signaling
- SLIV# corresponding to the second repetition is indicated by DCI/higher layer signaling.
- x' may be determined based on SLIV#x and a predetermined offset (eg, K ⁇ ).
- the HARQ-ACK codebook generation may be controlled based on whether any repetition of the scheduled PDSCH overlaps with the configured UL symbol. For example, option 2-1 is suitable for cases where the scheduled PDSCH is invalid if any repetition of the scheduled PDSCH overlaps with the configured UL symbol (option 1-5 above). may be applied to
- time domain resource allocation (TDRA) pruning optimization eg, TDRA pruning optimization
- SLIVs with starting symbol S/length L may be removed in TDRA pruning in each DL slot candidate. For example, if an SLIV with a certain start symbol S/length L overlaps a UL symbol (eg, semi-static UL symbol), the SLIV may be deleted.
- a UL symbol eg, semi-static UL symbol
- the PDSCH corresponding to the SLIV (for example, a PDSCH repetition corresponding to SLIV, or a PDSCH schedule including a PDSCH repetition corresponding to SLIV) is May mean deleted/ignored.
- a SLIV cannot be scheduled for an intra-slot M-TRP PDSCH repetition for example, if S+L+offset(K ⁇ )+L is greater than 14. In this case, if a SLIV overlaps a UL symbol (eg, semi-static UL symbol), the SLIV may be deleted.
- SLIV can be scheduled for intra-slot M-TRP PDSCH repetitions.
- SLIV can be scheduled for intra-slot M-TRP PDSCH repetitions if, for example, S+L+offset(K ⁇ )+L is not greater than 14.
- S+L+offset(K ⁇ )+L is not greater than 14.
- a SLIV overlaps a UL symbol eg, a semi-static UL symbol
- any symbol from S+L+ K- to S+L+ K- +L overlaps a UL symbol
- the UE will, in the HARQ-ACK codebook/feedback, HARQ-ACK the PDSCH in that slot. is not included (or deleted).
- SLIV#1 corresponding to the first repetition Rep#1 is valid (eg, does not overlap with the UL symbol), while SLIV#1′ corresponding to the second repetition Rep#2 is invalid. If there is (eg overlaps with UL symbol), it may be considered invalid (see FIG. 7). In this case, considering that the second iteration (SLIV#1') overlaps with UL symbols, SLIV#1 may be deleted for TDRA pruning.
- Option 2-2 Generation of the HARQ-ACK codebook may be controlled based on whether a particular repetition of the scheduled PDSCH overlaps with the configured UL symbol. For example, option 2-2 is suitable for the case where the scheduled PDSCH is invalid when a specific repetition of the scheduled PDSCH overlaps with the configured UL symbol (option 1-6 above) may be applied.
- a particular repetition is the first repetition of a scheduled PDSCH
- the scheduled PDSCH may be determined to be invalid if the second repetition overlaps with the UL symbol.
- time domain resource allocation (TDRA) pruning optimization eg, TDRA pruning optimization
- SLIVs with starting symbol S/length L may be removed in TDRA pruning in each DL slot candidate. For example, if an SLIV with a certain start symbol S/length L overlaps a UL symbol (eg, semi-static UL symbol), the SLIV may be deleted.
- a UL symbol eg, semi-static UL symbol
- a SLIV cannot be scheduled for an intra-slot M-TRP PDSCH repetition for example, if S+L+offset(K ⁇ )+L is greater than 14. In this case, if a SLIV overlaps a UL symbol (eg, semi-static UL symbol), the SLIV may be deleted.
- SLIV can be scheduled for intra-slot M-TRP PDSCH repetitions.
- SLIV can be scheduled for intra-slot M-TRP PDSCH repetitions if, for example, S+L+offset(K ⁇ )+L is not greater than 14. If a particular iteration is the second iteration, the SLIV may be deleted if any symbol from S+L+K ⁇ to S+L+K ⁇ +L overlaps with the UL symbol.
- the UE does not include (or remove) the PDSCH HARQ-ACK in that slot in the HARQ-ACK codebook/feedback. to control.
- SLIV#1 corresponding to the first repetition Rep#1 is invalid (e.g., overlaps the UL symbol), while corresponding to the second repetition Rep#2. If SLIV#1' is valid (eg, does not overlap with UL symbols), it may be determined to be valid (see Figure 8).
- the UE may decide to drop the SLIV (or scheduled PDSCH) based only on the validity of the second iteration.
- SLIV#1 (or PDSCH corresponding to SLIV#1/SLIV#'1) is used for TDRA pruning considering that the second iteration (SLIV#1') does not overlap with UL symbols. Therefore, the configuration may be such that it is not deleted.
- HARQ-ACK codebook generation may be controlled based on whether all (eg, both) repetitions of the scheduled PDSCH overlap with the configured UL symbols.
- option 2-3 is suitable for the case where the scheduled PDSCH is invalid when both repetitions of the scheduled PDSCH overlap with the configured UL symbol (option 1-7 above). may be applied.
- time domain resource allocation (TDRA) pruning optimization eg, TDRA pruning optimization
- SLIVs with starting symbol S/length L may be removed in TDRA pruning in each DL slot candidate. For example, if an SLIV with a certain start symbol S/length L overlaps a UL symbol (eg, semi-static UL symbol), the SLIV may be deleted.
- a UL symbol eg, semi-static UL symbol
- a case where SLIV cannot be scheduled for an intra-slot M-TRP PDSCH repetition may be, for example, when S+L+offset(K ⁇ )+L is greater than 14.
- the SLIV may be deleted.
- SLIV can be scheduled for intra-slot M-TRP PDSCH repetitions.
- SLIV can be scheduled for intra-slot M-TRP PDSCH repetitions if, for example, S+L+offset(K ⁇ )+L is not greater than 14.
- a SLIV overlaps a UL symbol (e.g., a semi-static UL symbol), and any symbol from S+L+ K- to S+L+ K- +L overlaps the UL symbol, the SLIV may be deleted. good.
- the UE receives HARQ-ACK for the PDSCH in that slot in the HARQ-ACK codebook/feedback. Control not to include (or delete).
- any symbol from S to S+L If any symbol and any symbol from S+L+K ⁇ to S+L+K ⁇ +L overlap with the UL symbol.
- SLIV#1 corresponding to the first repetition Rep#1 or SLIV#1′ corresponding to the second repetition Rep#2 may be determined to be valid (see FIGS. 9A-9C).
- SLIV#1 corresponding to the first repetition Rep#1 is valid (e.g. does not overlap with the UL symbol) and SLIV#1' corresponding to the second repetition Rep#2 is invalid (e.g. UL symbol ), it may be determined to be valid (see FIG. 9A).
- a configuration may be adopted in which SLIV#1 (or PDSCH corresponding to SLIV#1/SLIV#'1) is not deleted for TDRA pruning.
- SLIV#1 corresponding to the first repetition Rep#1 is invalid (eg, overlaps the UL symbol)
- SLIV#1′ corresponding to the second repetition Rep#2 is valid (eg, UL symbol)
- it may be determined to be valid (see FIG. 9B).
- a configuration may be adopted in which SLIV#1 (or PDSCH corresponding to SLIV#1/SLIV#'1) is not deleted for TDRA pruning.
- SLIV#1 corresponding to the first repetition Rep#1 is invalid (eg, overlaps the UL symbol), and SLIV#1′ corresponding to the second repetition Rep#2 is also invalid (eg, UL symbol), it may be determined to be invalid (see FIG. 9C).
- SLIV#1 (or PDSCH corresponding to SLIV#1/SLIV#'1) may be deleted for TDRA pruning.
- ⁇ Variation> If a scheduled PDSCH is determined to be invalid, the rules defined for multi-PDSCH scheduling for a single TRP may apply. For example, HPN may be skipped. NACKs may also be reported for dynamic (eg, type 2) HARQ-ACK codebook/feedback.
- a DCI for multi-PDSCH scheduling may be a DL grant DCI format in which a TDRA table including multiple SLIVs in at least one row is set.
- UE capability information In the above embodiments (eg, the first embodiment to the second embodiment), the following UE capabilities may be set. Note that the UE capabilities below may be read as parameters (eg, higher layer parameters) set in the UE from the network (eg, base station).
- UE capability information may be defined as to whether the UE supports the joint operation of single DCI multi-TRP intra-slot PDSCH repetition and multi-PDSCH scheduling.
- UE capability for whether or not the UE supports determining PDSCH enable/disable based on 1st/2nd repetition for joint operation of single DCI multi-TRP intra-slot PDSCH repetition and multi-PDSCH scheduling Information may be defined.
- UE capability information is defined for whether the UE supports intra-slot PDSCH repetition of single DCI multi-TRP and joint operation of multi-PDSCH scheduling to enable/disable PDSCH based on both repetitions.
- UE capability information is defined on whether the UE supports the joint operation of single DCI multi-TRP intra-slot PDSCH repetition and multi-PDSCH scheduling when Type 1 HARQ-ACK codebook/feedback is configured. good too.
- wireless communication system A configuration of a wireless communication system according to an embodiment of the present disclosure will be described below.
- communication is performed using any one of the radio communication methods according to the above embodiments of the present disclosure or a combination thereof.
- FIG. 10 is a diagram showing an example of a schematic configuration of a wireless communication system according to one 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 the Third Generation Partnership Project (3GPP). .
- LTE Long Term Evolution
- 5G NR 5th generation mobile communication system New Radio
- 3GPP Third Generation Partnership Project
- the wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)).
- RATs Radio Access Technologies
- MR-DC is dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)), etc.
- RATs Radio Access Technologies
- MR-DC is dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)), etc.
- LTE Evolved Universal Terrestrial Radio Access
- EN-DC E-UTRA-NR Dual Connectivity
- NE-DC NR-E -UTRA Dual Connectivity
- the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN).
- the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.
- the wireless communication system 1 has dual connectivity between multiple base stations within 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.
- dual connectivity NR-NR Dual Connectivity (NN-DC) in which both MN and SN are NR base stations (gNB)
- gNB NR base stations
- a wireless communication system 1 includes a base station 11 forming a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) arranged in the macrocell C1 and forming a small cell C2 narrower than the macrocell C1. You may prepare.
- a user terminal 20 may be located within at least one cell. The arrangement, number, etc. of each cell and user terminals 20 are not limited to the embodiment shown in the figure.
- the base stations 11 and 12 are collectively referred to as the base station 10 when not distinguished.
- the user terminal 20 may connect to at least one of the multiple base stations 10 .
- the user terminal 20 may utilize at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).
- CA carrier aggregation
- CC component carriers
- DC dual connectivity
- Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)).
- Macrocell C1 may be included in FR1, and small cell C2 may be included in FR2.
- FR1 may be a frequency band below 6 GHz (sub-6 GHz)
- FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.
- the user terminal 20 may communicate 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
- a plurality of base stations 10 may be connected by wire (for example, an optical fiber conforming to Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (for example, NR communication).
- wire for example, an optical fiber conforming to Common Public Radio Interface (CPRI), X2 interface, etc.
- NR communication for example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station is an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) is an IAB Also called a node.
- IAB Integrated Access Backhaul
- relay station relay station
- the base station 10 may be connected to the core network 30 directly or via another base station 10 .
- the core network 30 may include, for example, at least one of Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), and the like.
- 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 schemes such as LTE, LTE-A, and 5G.
- a radio access scheme based on orthogonal frequency division multiplexing may be used.
- OFDM orthogonal frequency division multiplexing
- 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
- a radio access method may be called a waveform.
- other radio access schemes for example, other single-carrier transmission schemes and other multi-carrier transmission schemes
- the UL and DL radio access schemes may be used as the UL and DL radio access schemes.
- a downlink shared channel Physical Downlink Shared Channel (PDSCH)
- PDSCH Physical Downlink Shared Channel
- PBCH Physical Broadcast Channel
- PDCCH Physical Downlink Control Channel
- an uplink shared channel (PUSCH) shared by each user terminal 20 an uplink control channel (PUCCH), a random access channel (Physical Random Access Channel (PRACH)) or the like may be used.
- PUSCH uplink shared channel
- PUCCH uplink control channel
- PRACH Physical Random Access Channel
- User data, upper layer control information, System Information Block (SIB), etc. are transmitted by the PDSCH.
- User data, higher layer control information, and the like may be transmitted by PUSCH.
- a Master Information Block (MIB) may be transmitted by the PBCH.
- Lower layer control information may be transmitted by the PDCCH.
- the lower layer control information may include, for example, downlink control information (DCI) including scheduling information for at least one of PDSCH and PUSCH.
- DCI downlink control information
- the DCI that schedules PDSCH may be called DL assignment, DL DCI, etc.
- the DCI that schedules PUSCH may be called UL grant, UL DCI, etc.
- PDSCH may be replaced with DL data
- PUSCH may be replaced with UL data.
- a control resource set (CControl Resource SET (CORESET)) and a search space (search space) may be used for PDCCH detection.
- CORESET corresponds to a resource searching for DCI.
- the search space corresponds to the search area and search method of PDCCH candidates.
- a CORESET may be associated with one or more search spaces. The UE may monitor CORESETs associated with certain search spaces 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. Note that “search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, etc. in the present disclosure may be read interchangeably.
- PUCCH channel state information
- acknowledgment information for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK/NACK, etc.
- SR scheduling request
- a random access preamble for connection establishment with a cell may be transmitted by the PRACH.
- downlink, uplink, etc. may be expressed without adding "link”.
- various channels may be expressed without adding "Physical" to the head.
- synchronization signals SS
- downlink reference signals DL-RS
- the DL-RS includes a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DeModulation Reference Signal (DMRS)), Positioning Reference Signal (PRS)), Phase Tracking Reference Signal (PTRS)), etc.
- CRS cell-specific reference signal
- CSI-RS channel state information reference signal
- DMRS Demodulation 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 (PSS) and a Secondary Synchronization Signal (SSS).
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- a signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called SS/PBCH block, SS Block (SSB), and so on.
- SS, SSB, etc. may also be referred to as reference signals.
- DMRS may also be called a user terminal-specific reference signal (UE-specific reference signal).
- FIG. 11 is a diagram illustrating an example of the configuration of a base station according to one embodiment.
- the base station 10 comprises a control section 110 , a transmission/reception section 120 , a transmission/reception antenna 130 and a transmission line interface 140 .
- One or more of each of the control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140 may be provided.
- this example mainly shows the functional blocks of the features of the present embodiment, 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 unit described below may be omitted.
- the control unit 110 controls the base station 10 as a whole.
- the control unit 110 can be configured from a controller, a control circuit, and the like, which are explained based on 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, etc. 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, etc., and transfer them to the transmission/reception unit 120 .
- the control unit 110 may perform call processing (setup, release, etc.) of communication channels, state management of the base station 10, management of radio resources, and the like.
- the transmitting/receiving section 120 may include a baseband section 121 , a radio frequency (RF) section 122 and a measuring section 123 .
- the baseband section 121 may include a transmission processing section 1211 and a reception processing section 1212 .
- the transmitting/receiving unit 120 is configured from a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting/receiving circuit, etc., which are explained based on 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 configured from a transmission unit and a reception unit.
- the transmission section may be composed of the transmission processing section 1211 and the RF section 122 .
- the receiving section may be composed of a reception processing section 1212 , an RF section 122 and a measurement section 123 .
- the transmitting/receiving antenna 130 can be configured from an antenna described based on common recognition in the technical field related to the present disclosure, such as an array antenna.
- the transmitting/receiving unit 120 may transmit the above-described downlink channel, synchronization signal, downlink reference signal, and the like.
- the transmitting/receiving unit 120 may receive the above-described uplink channel, uplink reference signal, and the like.
- the transmitting/receiving unit 120 may form at least one of the transmission beam and the reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.
- digital beamforming eg, precoding
- analog beamforming eg, phase rotation
- the transmission/reception unit 120 (transmission processing unit 1211) performs Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. may be performed to generate a bit string to be transmitted.
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Control
- HARQ retransmission control for example, HARQ retransmission control
- the transmission/reception unit 120 (transmission processing unit 1211) performs channel coding (which may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (DFT) on the bit string to be transmitted. Processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, transmission processing such as digital-to-analog conversion may be performed, and the baseband signal may be output.
- channel coding which may include error correction coding
- modulation modulation
- mapping mapping
- filtering filtering
- DFT discrete Fourier transform
- DFT discrete Fourier transform
- the transmitting/receiving unit 120 may perform modulation to a radio frequency band, filter processing, amplification, and the like on the baseband signal, and may transmit the radio frequency band signal via the transmitting/receiving antenna 130. .
- the transmitting/receiving unit 120 may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 130.
- the transmission/reception unit 120 (reception processing unit 1212) performs analog-to-digital conversion, Fast Fourier transform (FFT) processing, and Inverse Discrete Fourier transform (IDFT) processing on the acquired baseband signal. )) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing. User data and the like may be acquired.
- FFT Fast Fourier transform
- IDFT Inverse Discrete Fourier transform
- the transmitting/receiving unit 120 may measure the received signal.
- the measurement unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, etc. based on the received signal.
- the measurement unit 123 measures received power (for example, Reference Signal Received Power (RSRP)), reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)) , signal strength (for example, Received Signal Strength Indicator (RSSI)), channel information (for example, CSI), and the like may be measured.
- RSRP Reference Signal Received Power
- RSSQ Reference Signal Received Quality
- SINR Signal to Noise Ratio
- RSSI Received Signal Strength Indicator
- channel information for example, CSI
- the transmission path interface 140 transmits and receives signals (backhaul signaling) to and from devices included in the core network 30, other base stations 10, etc., and user data (user plane data) for the user terminal 20, control plane data, and the like. Data and the like may be obtained, transmitted, and the like.
- the transmitting unit and receiving unit of the base station 10 in the present disclosure may be configured by at least one of the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission line interface 140.
- the transmitting/receiving unit 120 may transmit information regarding the transmission direction of the symbols included in the slots.
- TDM Time Division Multiplexing
- FIG. 12 is a diagram illustrating an example of the configuration of a user terminal according to one embodiment.
- the user terminal 20 includes a control section 210 , a transmission/reception section 220 and a transmission/reception antenna 230 .
- One or more of each of the control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving antenna 230 may be provided.
- this example mainly shows the functional blocks of the features of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.
- the control unit 210 controls the user terminal 20 as a whole.
- the control unit 210 can be configured from a controller, a control circuit, and the like, which are explained based on 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, etc. using the transmission/reception unit 220 and the transmission/reception antenna 230 .
- the control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transmission/reception unit 220 .
- the transmitting/receiving section 220 may include a baseband section 221 , an RF section 222 and a measurement section 223 .
- the baseband section 221 may include a transmission processing section 2211 and a reception processing section 2212 .
- the transmitting/receiving unit 220 can be configured from a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting/receiving circuit, etc., which are explained based on 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 configured from a transmission unit and a reception unit.
- the transmission section may be composed of a transmission processing section 2211 and an RF section 222 .
- the receiving section may include a reception processing section 2212 , an RF section 222 and a measurement section 223 .
- the transmitting/receiving antenna 230 can be configured from an antenna described based on common recognition in the technical field related to the present disclosure, such as an array antenna.
- the transmitting/receiving unit 220 may receive the above-described downlink channel, synchronization signal, downlink reference signal, and the like.
- the transmitting/receiving unit 220 may transmit the above-described uplink channel, uplink reference signal, and the like.
- the transmitter/receiver 220 may form at least one of the transmission beam and the reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.
- digital beamforming eg, precoding
- analog beamforming eg, phase rotation
- the transmitting/receiving unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (eg, RLC retransmission control), MAC layer processing (eg, , HARQ retransmission control) and the like may be performed to generate a bit string to be transmitted.
- RLC layer processing eg, RLC retransmission control
- MAC layer processing eg, HARQ retransmission control
- the transmission/reception unit 220 (transmission processing unit 2211) performs channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), and IFFT processing on a bit string to be transmitted. , precoding, digital-analog conversion, and other transmission processing may be performed, and the baseband signal may be output.
- Whether or not to apply DFT processing may be based on transform precoding settings. Transmitting/receiving unit 220 (transmission processing unit 2211), for a certain channel (for example, PUSCH), if transform precoding is enabled, the above to transmit the channel using the DFT-s-OFDM waveform
- the DFT process may be performed as the transmission process, or otherwise the DFT process may not be performed as the transmission process.
- the transmitting/receiving unit 220 may perform modulation to a radio frequency band, filter processing, amplification, and the like on the baseband signal, and may transmit the radio frequency band signal via the transmitting/receiving antenna 230. .
- the transmitting/receiving section 220 may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 230.
- the transmission/reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (error correction) on the acquired baseband signal. decoding), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.
- the transmitting/receiving section 220 may measure the received signal.
- the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal.
- the measuring unit 223 may measure received power (eg, RSRP), received quality (eg, RSRQ, SINR, SNR), signal strength (eg, RSSI), channel information (eg, CSI), and the like.
- the measurement result may be output to control section 210 .
- the transmitter and receiver of the user terminal 20 in the present disclosure may be configured by at least one of the transmitter/receiver 220 and the transmitter/receiver antenna 230 .
- the transmitting/receiving unit 220 may receive information about the transmission direction of the symbols included in the slot.
- the control unit 210 determines that at least one of the multiple repeated transmissions is a UL symbol. It may be assumed (or assumed to control HARQ-ACK codebook generation) that there is no overlap.
- the control unit 210 may determine that the downlink shared channel scheduled in the slot is invalid when a predetermined repeated transmission among multiple repeated transmissions overlaps with the UL symbol.
- control unit 210 sets the offset between multiple repeated transmissions (for example, the start corresponding to the second iteration offset) may be taken into account to control the generation of the acknowledgment codebook.
- each functional block may be implemented using one device physically or logically coupled, or directly or indirectly using two or more physically or logically separated devices (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
- a functional block may be implemented by combining software in the one device or the plurality of devices.
- function includes judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, deem , broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
- a functional block (component) that performs transmission may be called a transmitting unit, a transmitter, or the like. In either case, as described above, the implementation method is not particularly limited.
- a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
- FIG. 13 is a diagram illustrating an example of hardware configurations of a base station and user terminals according to an embodiment.
- the base station 10 and 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 each device shown in the figure, or may be configured without some devices.
- processor 1001 may be implemented by one or more chips.
- predetermined software program
- the processor 1001 performs calculations, communication via the communication device 1004 and at least one of reading and writing data in the memory 1002 and the storage 1003 .
- the processor 1001 operates an operating system and controls 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 device, registers, and the like.
- CPU central processing unit
- control unit 110 210
- transmission/reception unit 120 220
- FIG. 10 FIG. 10
- the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them.
- programs program codes
- software modules software modules
- data etc.
- the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and other functional blocks may be similarly implemented.
- the memory 1002 is a computer-readable recording medium, such as Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or at least any other suitable storage medium. may be configured by one.
- the memory 1002 may also be called a register, cache, main memory (main storage device), or the like.
- the memory 1002 can store executable programs (program code), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium, for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, Blu-ray disc), removable disc, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium may be configured by Storage 1003 may also be called an auxiliary storage device.
- a computer-readable recording medium for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, Blu-ray disc), removable disc, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium may be configured by Storage 1003 may also
- the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes a high-frequency switch, duplexer, filter, frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD), for example. may be configured to include
- the transmitting/receiving unit 120 (220), the transmitting/receiving antenna 130 (230), and the like described above may be realized by the communication device 1004.
- the transmitter/receiver 120 (220) may be physically or logically separated into a transmitter 120a (220a) and a receiver 120b (220b).
- the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives 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. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
- Each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
- the base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc. It may be configured including hardware, and a part or all of each functional block may be realized using the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.
- DSP digital signal processor
- ASIC application specific integrated circuit
- PLD programmable logic device
- FPGA field programmable gate array
- a signal may also be a message.
- a reference signal may be abbreviated as RS, and may also be called a pilot, a pilot signal, etc., depending on the applicable standard.
- a component carrier may also be called a cell, a frequency carrier, a carrier frequency, or the like.
- a radio frame may consist of one or more periods (frames) in the time domain.
- Each of the one or more periods (frames) that make up a radio frame may be called a subframe.
- a subframe may consist of one or more slots in the time domain.
- a subframe may be a fixed time length (eg, 1 ms) independent of numerology.
- a numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel.
- Numerology for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration , a particular filtering process performed by the transceiver in the frequency domain, a particular windowing process performed by the transceiver in the time domain, and/or the like.
- a slot may consist of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- a slot may also be a unit of time based on numerology.
- a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
- a PDSCH (or PUSCH) transmitted in time units larger than a minislot may be referred to as PDSCH (PUSCH) Mapping Type A.
- PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (PUSCH) mapping type B.
- Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations. Note that time units such as frames, subframes, slots, minislots, and symbols in the present disclosure may be read interchangeably.
- one subframe may be called a TTI
- a plurality of consecutive subframes may be called a TTI
- one slot or one minislot may be called a 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 Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.
- TTI refers to, for example, the minimum scheduling time unit in wireless communication.
- a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis.
- radio resources frequency bandwidth, transmission power, etc. that can be used by each user terminal
- a TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
- one or more TTIs may be the minimum scheduling time unit. Also, the number of slots (the 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 called a normal TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like.
- a TTI that is shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
- the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
- the short TTI e.g., shortened TTI, etc.
- a TTI having the above TTI length may be read instead.
- a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain.
- the number of subcarriers included in the RB may be the same regardless of the neumerology, eg twelve.
- the number of subcarriers included in an RB may be determined based on neumerology.
- an RB may contain one or more symbols in the time domain and may be 1 slot, 1 minislot, 1 subframe or 1 TTI long.
- One TTI, one subframe, etc. may each be configured with one or more resource blocks.
- One or more RBs are Physical Resource Block (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB pair, RB Also called a pair.
- PRB Physical Resource Block
- SCG Sub-Carrier Group
- REG Resource Element Group
- PRB pair RB Also called a pair.
- a resource block may be composed of one or more resource elements (Resource Element (RE)).
- RE resource elements
- 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
- a Bandwidth Part (which may also be called a bandwidth part) represents a subset of contiguous common resource blocks (RBs) for a numerology on a carrier.
- the common RB may be identified by an RB index based on the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL).
- BWP for UL
- BWP for DL DL BWP
- One or multiple BWPs may be configured for a UE within one carrier.
- At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
- BWP bitmap
- radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples.
- the number of subframes contained in a radio frame, the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers and the number of symbols in a TTI, symbol length, cyclic prefix (CP) length, etc. can be varied.
- the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information. may be represented. For example, radio resources may be indicated by a predetermined index.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
- information, signals, etc. can be output from a higher layer to a lower layer and/or from a lower layer to a higher layer.
- Information, signals, etc. may be input and output through multiple 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 and output information, signals, etc. may be overwritten, updated or appended. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to other devices.
- Uplink Control Information (UCI) Uplink Control Information
- RRC Radio Resource Control
- MIB Master Information Block
- SIB System Information Block
- SIB System Information Block
- MAC Medium Access Control
- the physical layer signaling may also be called Layer 1/Layer 2 (L1/L2) control information (L1/L2 control signal), L1 control information (L1 control signal), and the like.
- RRC signaling may also be called 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 (CE).
- CE MAC Control Element
- notification of predetermined information is not limited to explicit notification, but implicit notification (for example, by not notifying the predetermined information or by providing another information by notice of
- the determination may be made by a value (0 or 1) represented by 1 bit, or by a boolean value represented by true or false. , may be performed by numerical comparison (eg, comparison with a predetermined value).
- Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) , a server, or other remote source, these wired and/or wireless technologies are included within the definition of transmission media.
- a “network” may refer to devices (eg, base stations) included in a network.
- precoding "precoding weight”
- QCL Quality of Co-Location
- TCI state Transmission Configuration Indication state
- spatialal patial relation
- spatialal 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 interchangeable. can be used as intended.
- base station BS
- radio base station fixed station
- NodeB NodeB
- eNB eNodeB
- gNB gNodeB
- Access point "Transmission Point (TP)”, “Reception Point (RP)”, “Transmission/Reception Point (TRP)”, “Panel”
- a base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.
- a base station can accommodate one or more (eg, three) cells.
- the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is assigned to a base station subsystem (e.g., a small indoor base station (Remote Radio)). Head (RRH))) may also provide communication services.
- a base station subsystem e.g., a small indoor base station (Remote Radio)). Head (RRH)
- RRH Head
- the terms "cell” or “sector” refer to part or all of the coverage area of at least one of the base stations and base station subsystems that serve communication within such coverage.
- MS Mobile Station
- UE User Equipment
- 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. , a handset, a user agent, a mobile client, a 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 a moving object, the mobile itself, or the like.
- the moving body refers to a movable object, the speed of movement is arbitrary, and it naturally includes cases where the moving body is stationary.
- Examples of such moving bodies include vehicles, transportation vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, and ships (ships and other watercraft). , airplanes, rockets, satellites, drones, multi-copters, quad-copters, balloons and objects mounted on them.
- the mobile body may be a mobile body that autonomously travels based on an operation command.
- the mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
- a vehicle e.g., car, airplane, etc.
- an unmanned mobile object e.g., drone, self-driving car, etc.
- a robot manned or unmanned .
- at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
- at least one of the base station and mobile station may be an Internet of Things (IoT) device such as a sensor.
- IoT Internet of Things
- FIG. 14 is a diagram showing an example of a vehicle according to one embodiment.
- the vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (current sensor 50, revolution sensor 51, air pressure sensor 52, vehicle speed sensor 53, acceleration sensor 54, accelerator pedal sensor 55, brake pedal sensor 56, shift lever sensor 57, and object detection sensor 58), information service unit 59 and communication module 60.
- various sensors current sensor 50, revolution sensor 51, air pressure sensor 52, vehicle speed sensor 53, acceleration sensor 54, accelerator pedal sensor 55, brake pedal sensor 56, shift lever sensor 57, and object detection sensor 58
- information service unit 59 and communication module 60.
- the driving unit 41 is composed of, for example, at least one of an engine, a motor, and a hybrid of an engine and a motor.
- the steering unit 42 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.
- the electronic control unit 49 is composed of a microprocessor 61 , a memory (ROM, RAM) 62 , and a communication port (eg, input/output (IO) port) 63 . Signals from various sensors 50 to 58 provided in the vehicle are input to the electronic control unit 49 .
- the electronic control unit 49 may be called an Electronic Control Unit (ECU).
- ECU Electronic Control Unit
- the signals from the various sensors 50 to 58 include a current signal from the current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46/rear wheels 47 obtained by the rotation speed sensor 51, and an air pressure sensor 52.
- air pressure signal of front wheels 46/rear wheels 47 vehicle speed signal obtained by vehicle speed sensor 53, acceleration signal obtained by acceleration sensor 54, depression amount signal of accelerator pedal 43 obtained by accelerator pedal sensor 55, brake pedal sensor
- the information service unit 59 includes various devices such as car navigation systems, audio systems, speakers, displays, televisions, and radios for providing (outputting) various information such as driving information, traffic information, and entertainment information, and these devices. and one or more ECUs that control The information service unit 59 provides various information/services (for example, multimedia information/multimedia services) to the occupants of the vehicle 40 using information acquired from an external device via the communication module 60 or the like.
- various information/services for example, multimedia information/multimedia services
- the information service unit 59 may include an input device (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) that receives input from the outside, and an output device that outputs to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).
- an input device e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.
- an output device e.g., display, speaker, LED lamp, touch panel, etc.
- the driving support system unit 64 includes a millimeter wave radar, Light Detection and Ranging (LiDAR), a camera, a positioning locator (e.g., Global Navigation Satellite System (GNSS), etc.), map information (e.g., High Definition (HD)) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., inertial measurement units (IMU), inertial navigation systems (INS), etc.), artificial intelligence ( Artificial intelligence (AI) chips, AI processors, and other devices that provide functions to prevent accidents and reduce the driver's driving load, and one or more devices that control these devices ECU.
- the driving support system unit 64 transmits and receives various information via the communication module 60, and realizes a driving support function or an automatic driving function.
- the communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63 .
- the communication module 60 communicates with the vehicle 40 through a communication port 63 such as a driving unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, Data (information) is transmitted and received between the axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58.
- the communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from an external device via wireless communication.
- Communication module 60 may be internal or external to electronic control 49 .
- the external device may be, for example, the above-described base station 10, user terminal 20, or the like.
- the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (and may function as at least one of the base station 10 and the user terminal 20).
- the communication module 60 receives signals from the various sensors 50 to 58 described above input to the electronic control unit 49, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 59. may be transmitted to the external device via wireless communication.
- the electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be called an input unit that receives input.
- the PUSCH transmitted by communication module 60 may include information based on the above inputs.
- the communication module 60 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 59 provided in the vehicle.
- the information service unit 59 is an output unit that outputs information (for example, outputs information to devices such as displays and speakers based on the PDSCH received by the communication module 60 (or data/information decoded from the PDSCH)). may be called
- the communication module 60 stores various information received from an external device in a memory 62 that can be used by the microprocessor 61 . Based on the information stored in the memory 62, the microprocessor 61 controls the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, and the left and right rear wheels provided in the vehicle 40. 47, axle 48, and various sensors 50-58 may be controlled.
- the base station in the present disclosure may be read as a user terminal.
- communication between a base station and a user terminal is replaced with communication between multiple user terminals (for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.)
- the user terminal 20 may have the functions of the base station 10 described above.
- words such as "uplink” and “downlink” may be replaced with words corresponding to communication between terminals (for example, "sidelink”).
- uplink channels, downlink channels, etc. may be read as sidelink channels.
- user terminals in the present disclosure may be read as base stations.
- the base station 10 may have the functions of the user terminal 20 described above.
- operations that are assumed to be performed by the base station may be performed by its upper node in some cases.
- various operations performed for communication with a terminal may involve the base station, one or more network nodes other than the base station (e.g., Clearly, this can be done by a Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. (but not limited to these) or a combination thereof.
- MME Mobility Management Entity
- S-GW Serving-Gateway
- each aspect/embodiment described in the present disclosure may be used alone, may be used in combination, or may be used by switching along with execution. Also, the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in the present disclosure may be rearranged as long as there is no contradiction. For example, the methods described in this disclosure present elements of the various steps using a sample order, and are not limited to the specific order presented.
- LTE Long Term Evolution
- LTE-A LTE-Advanced
- LTE-B LTE-Beyond
- SUPER 3G IMT-Advanced
- 4G 4th generation mobile communication system
- 5G 5th generation mobile communication system
- 6G 6th generation mobile communication system
- xG x is, for example, an integer or a decimal number
- 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
- IEEE 802 .11 Wi-Fi®
- IEEE 802.16 WiMAX®
- IEEE 802.20 Ultra-WideBand (UWB), Bluetooth®, or any other suitable wireless communication method. It may be applied to a system to be used, a next-generation system extended, modified, created or defined based on these.
- any reference to elements using the "first,” “second,” etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, references to first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.
- determining includes judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry ( For example, looking up in a table, database, or another data structure), ascertaining, etc. may be considered to be “determining.”
- determining (deciding) includes receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access ( accessing (e.g., accessing data in memory), etc.
- determining is considered to be “determining” resolving, selecting, choosing, establishing, comparing, etc. good too. That is, “determining (determining)” may be regarded as “determining (determining)” some action.
- connection refers to any connection or coupling, direct or indirect, between two or more elements. and can include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other. Couplings or connections between elements may be physical, logical, or a combination thereof. For example, "connection” may be read as "access”.
- radio frequency domain when two elements are connected, using one or more wires, cables, printed electrical connections, etc., and as some non-limiting and non-exhaustive examples, radio frequency domain, microwave They can be considered to be “connected” or “coupled” together using the domain, electromagnetic energy having wavelengths in the optical (both visible and invisible) domain, and the like.
- a and B are different may mean “A and B are different from each other.”
- the term may also mean that "A and B are different from C”.
- Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”
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- Computer Networks & Wireless Communication (AREA)
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Abstract
Description
既存システム(例えば、Rel.15)において、物理共有チャネル(PDSCH及びPUSCHの少なくとも一つ)の時間ドメインのリソース割当て情報は下り制御情報(DCI)に含まれる。ネットワーク(例えば、基地局)は、DCIに含まれる所定フィールド(例えば、TDRAフィールド)を利用して、当該DCIでスケジュールされる物理共有チャネルがスケジュールされる時間ドメインリソースに関する情報をUEに通知する。
UEは、DCI(例えば、DCIフォーマット1_0/1_1/1_2)内のTDRAフィールドの値に基づいて、所定のテーブルにおける行インデックス(エントリ番号又はエントリインデックス)を決定してもよい。当該所定のテーブルは、DCIと、当該DCIによりスケジュールされるPDSCHとの間の時間オフセット(例えば、スロットオフセットK0)を示す情報、PDSCHのマッピングタイプを示す情報、PDSCHの開始シンボルS及び時間長Lの少なくとも一つを含んでいてもよい。PDSCHの開始シンボルS及び時間長Lの組み合わせはStart and Length Indicator(SLIV)と呼ばれてもよい。
UEは、DCI(例えば、DCIフォーマット0_0/0_1/0_2)内のTDRAフィールドの値に基づいて、所定のテーブルにおける行インデックス(エントリ番号又はエントリインデックス)を決定してもよい。当該所定のテーブルは、DCIと、当該DCIによりスケジュールされるPUSCHとの間の時間オフセット(例えば、スロットオフセットK2)を示す情報、PUSCHのマッピングタイプを示す情報、PUSCHの開始シンボルS及び時間長Lの少なくとも一つを含んでいてもよい。PUSCHの開始シンボルS及び時間長Lの組み合わせはStart and Length Indicator(SLIV)と呼ばれてもよい。
NRでは、1つ又は複数の送受信ポイント(Transmission/Reception Point(TRP))(マルチTRP)が、1つ又は複数のパネル(マルチパネル)を用いて、UEに対してDL送信を行うことが検討されている。また、UEが、1つ又は複数のTRPに対してUL送信を行うことが検討されている。
UEは、1以上の送達確認情報(例えば、Hybrid Automatic Repeat reQuest ACKnowledgement(HARQ-ACK))のビットから構成されるHARQ-ACKコードブック単位で、1つのPUCCHリソースを用いてHARQ-ACKフィードバックを送信してもよい。HARQ-ACKビットは、HARQ-ACK情報、HARQ-ACK情報ビットなどと呼ばれてもよい。
Rel.15/16 NR以降では、PDSCHの繰り返し送信が検討されている。例えば、複数の送受信ポイント(Transmission/Reception Point(TRP))(マルチTRP)又は複数のパネル(マルチパネル)を用いたPDSCH送信について、PDSCHの繰り返し送信が行われ得る。
Rel.17 NR以降において、シングルDCIによりスケジュールされる複数のPDSCH(マルチPDSCH)がサポートされることが検討されている。例えば、シングルTRPベースのマルチPDSCH(S-TRP based multi-PDSCH)、マルチTRPベースのマルチPDSCH(M-TRP based multi-PDSCH)がサポートされることが想定される。
マルチPDSCHスケジュールに対するHARQ-ACKフィードバックについて、時間ドメインのバンドリング(time domain bundling)を行わないタイプ1HARQ-ACKコードブックが適用されてもよい。
<第1の実施形態>
第1の実施形態では、スロット内マルチTRPのPDSCH繰り返し(例えば、intra-slot M-TRP PDSCH repetiton)が適用される場合、マルチPDSCHスケジュール用のDCI(例えば、multi-PDSCH scheduling DCI)によりスケジュールされるPDSCHについて説明する。当該DCIはシングルDCIであってもよい(もちろんこれに限られない)。
スケジュールされるPDSCHのいずれかの繰り返しが、設定されるULシンボルとオーバーラップしないように制御されてもよい。スケジュールされるPDSCHの繰り返しは、同じスロット内の繰り返し送信(例えば、Rep#1、Rep#2)に相当する。設定されるULシンボルは、セミスタティックULシンボル、準静的ULシンボル、又は上位レイヤパラメータにより設定されるULシンボルと読み替えられてもよい。
スケジュールされるPDSCHの両方の繰り返しが、設定されるULシンボルとオーバーラップしないように制御されてもよい。PDSCHの両方の繰り返しは、例えば、同一シンボル内のPDSCH#xに対応する第1の繰り返し(Rep#1)と第2の繰り返し(Rep#2)の両方であってもよい。
スケジュールされるPDSCHのうち特定の繰り返しが、設定されるULシンボルとオーバーラップしないように制御されてもよい。特定の繰り返しは、例えば、同一シンボル内のPDSCH#xに対応する第1の繰り返し(Rep#1)、又は第2の繰り返し(Rep#2)であってもよい。
スケジュールされるPDSCHの一方の繰り返しが、設定されるULシンボルとオーバーラップし、他の繰り返しが、設定されるULシンボルとオーバーラップしないように制御されてもよい。
スケジュールされるPDSCHのいずれかの繰り返しが、設定されるULシンボルとオーバーラップする場合、当該スケジュールされるPDSCHは無効であってもよい。
スケジュールされるPDSCHの特定の繰り返し(例えば、第1の繰り返し/第2の繰り返し)が、設定されるULシンボルとオーバーラップする場合、当該スケジュールされるPDSCHは無効であってもよい。
スケジュールされるPDSCHの両方の繰り返し(例えば、第1の繰り返しと第2の繰り返しの両方)が、設定されるULシンボルとオーバーラップする場合、当該スケジュールされるPDSCHは無効であってもよい。
準静的な(例えば、タイプ1の)HARQ-ACKコードブック/フィードバックが設定される場合、マルチPDSCHスケジューリングと、シングルDCIベースのマルチTRPスロット内PDSCH繰り返しと、が同時に設定されないように制御されてもよい。
準静的な(例えば、タイプ1の)HARQ-ACKコードブック/フィードバックが設定される場合、スケジュールされるPDSCHのいかなる繰り返しがセミスタティックULシンボルとオーバーラップされないように制御されてもよい。
準静的な(例えば、タイプ1の)HARQ-ACKコードブック/フィードバックが設定される場合、スケジュールされるPDSCHの両方の繰り返しがセミスタティックULシンボルとオーバーラップされないように制御されてもよい。
準静的な(例えば、タイプ1の)HARQ-ACKコードブック/フィードバックが設定される場合、スケジュールされるPDSCHの特定の繰り返し(例えば、第1の繰り返し/第2の繰り返し)がセミスタティックULシンボルとオーバーラップされないように制御されてもよい。
準静的な(例えば、タイプ1の)HARQ-ACKコードブック/フィードバックが設定される場合、スケジュールされるPDSCHの一方の繰り返しがセミスタティックULシンボルとオーバーラップせず、他方の繰り返しがセミスタティックULシンボルとオーバーラップするように制御されてもよい。
第2の実施形態では、スロット内マルチTRPのPDSCH繰り返し(例えば、intra-slot M-TRP PDSCH repetiton)が適用される場合、当該PDSCH繰り返しに対するHARQ-ACKフィードバック(又は、HARQ-ACKコードブック生成)の制御の一例について説明する。第2の実施形態は第1の実施形態と組み合わせて適用されてもよい。
スケジュールされるPDSCHのいずれかの繰り返しが、設定されるULシンボルとオーバーラップするか否かに基づいて、HARQ-ACKコードブックの生成が制御されてもよい。例えば、オプション2-1は、スケジュールされるPDSCHのいずれかの繰り返しが、設定されるULシンボルとオーバーラップする場合に、当該スケジュールされるPDSCHが無効となるケース(上記オプション1-5)に好適に適用されてもよい。
スケジュールされるPDSCHの特定の繰り返しが、設定されるULシンボルとオーバーラップするか否かに基づいて、HARQ-ACKコードブックの生成が制御されてもよい。例えば、オプション2-2は、スケジュールされるPDSCHの特定の繰り返しが、設定されるULシンボルとオーバーラップする場合に、当該スケジュールされるPDSCHが無効となるケース(上記オプション1-6)に好適に適用されてもよい。
スケジュールされるPDSCHの全て(例えば、両方)の繰り返しが、設定されるULシンボルとオーバーラップするか否かに基づいて、HARQ-ACKコードブックの生成が制御されてもよい。例えば、オプション2-3は、スケジュールされるPDSCHの両方の繰り返しが、設定されるULシンボルとオーバーラップする場合に、当該スケジュールされるPDSCHが無効となるケース(上記オプション1-7)に好適に適用されてもよい。
スケジュールされるPDSCHが無効と判断される場合、シングルTRPのマルチPDSCHスケジューリングに対して定義されたルールが適用されてもよい。例えば、HPNはスキップされてもよい。また、動的な(例えば、タイプ2)HARQ-ACKコードブック/フィードバックに対してNACKが報告されてもよい。
上記実施の形態(例えば、第1の実施形態~第2の実施形態)において、以下のUE能力(UE capability)が設定されてもよい。なお、以下のUE能力は、ネットワーク(例えば、基地局)からUEに設定するパラメータ(例えば、上位レイヤパラメータ)と読み替えられてもよい。
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11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12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 (5)
- スロットに含まれるシンボルの伝送方向に関する情報を受信する受信部と、
前記スロット内において時分割多重(Time Division Multiplexing(TDM))スキームが適用される下りリンク共有チャネルの複数の繰り返し送信が設定される場合、前記複数の繰り返し送信の少なくとも一つがULシンボルとオーバーラップしないと想定する制御部と、を有する端末。 - 前記制御部は、前記複数の繰り返し送信の中の所定の繰り返し送信がULシンボルとオーバーラップする場合、前記スロットにスケジュールされる下り共有チャネルが無効であると判断する請求項1に記載の端末。
- 前記制御部は、セミスタティックの送達確認信号コードブックを利用して前記下りリンク共有チャネルに対する送達確認信号のフィードバックを行う場合、前記複数の繰り返し送信の間のオフセットを考慮して、前記送達確認信号コードブックの生成を制御する請求項1又は請求項2に記載の端末。
- スロットに含まれるシンボルの伝送方向に関する情報を受信する工程と、
前記スロット内において時分割多重(Time Division Multiplexing(TDM))スキームが適用される下りリンク共有チャネルの複数の繰り返し送信が設定される場合、前記複数の繰り返し送信の少なくとも一つがULシンボルとオーバーラップしないと想定する工程と、を有する端末の無線通信方法。 - スロットに含まれるシンボルの伝送方向に関する情報を送信する送信部と、
前記スロット内において時分割多重(Time Division Multiplexing(TDM))スキームが適用される下りリンク共有チャネルの複数の繰り返し送信を設定する場合、前記複数の繰り返し送信の少なくとも一つがULシンボルとオーバーラップしないように制御する制御部と、を有する基地局。
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VIVO: "Discussion on enhancement on PDCCH, PUCCH, PUSCH in MTRP scenario", 3GPP DRAFT; R1-2005364, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20200817 - 20200828, 8 August 2020 (2020-08-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051917389 * |
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