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JP-7854979-B2 - Transmission methods, transmission devices, and communication equipment

JP7854979B2JP 7854979 B2JP7854979 B2JP 7854979B2JP-7854979-B2

Inventors

  • ソン、ヤン
  • リウ、ハオ
  • スン、ポン

Assignees

  • 維沃移動通信有限公司

Dates

Publication Date
20260507
Application Date
20210827
Priority Date
20200828

Claims (9)

  1. A transmission method, The communication device determines that the first space information of the target is the target space information if the space information indicated in the downlink control information cannot be used to determine the first space information of the target, or if the first space information of the target is not indicated in the downlink control information, and the reference resource corresponding to the target is a plurality of control resource sets (CORESETs) , the search space associated with each CORESET is used for multiple transmissions of the same physical downlink control channel ( PDCCH ), each CORESET corresponds to one second space information, the target space information is the second space information corresponding to the CORESET with the smallest CORESET ID among the plurality of CORESETs, and the multiple transmissions of the same PDCCH are used to schedule the target . This includes transmitting or receiving the target object by adopting the determined first space information, The aforementioned target is the physical downlink sharing information PDSCH or the physical uplink sharing channel PUSCH. The aforementioned communication equipment includes a terminal or base station. Transmission method.
  2. The transmission method according to claim 1, wherein the target object has one or more transmission resources.
  3. If a terminal that transmits or receives the target object has multiple first identifiers, the reference resource and the target object correspond to the same first identifier, and/or The transmission method according to claim 1 or claim 2 , wherein the reference resource and the target object are located in the same time unit.
  4. The transmission method according to claim 3, wherein one of the above time units includes one slot, a plurality of slots, a portion of orthogonal frequency division multiplexed OFDM symbols in one slot, and a portion of OFDM symbols in the plurality of slots .
  5. The transmission method according to claim 1 or claim 2 , wherein the first space information includes one of a transmission arrangement instruction TCI state, a pseudo-collocation QCL, and a space relationship.
  6. A transmission device, A first decision module for determining that the first space information of a target is target space information when the space information indicated in the downlink control information cannot be used to determine the first space information of a target, or when the first space information of a target is not indicated in the downlink control information, wherein the reference resource corresponding to the target is a plurality of control resource sets CORESET , the search space associated with each CORESET is used for multiple transmissions of the same physical downlink control channel PDCCH, each CORESET corresponds to one second space information, the target space information is the second space information corresponding to the CORESET with the smallest CORESET ID among the plurality of CORESETs , and the multiple transmissions of the same PDCCH are used for scheduling the target , Includes a transmission module for transmitting or receiving the target object by employing the determined first space information, The aforementioned target is the physical downlink sharing information PDSCH or the physical uplink sharing channel PUSCH. Transmission device.
  7. The transmission device according to claim 6 , wherein the target object has one or more transmission resources.
  8. The transmission device according to claim 6 or 7 , wherein, when a terminal that transmits or receives the target object has a plurality of first identifiers, the reference resource and the target object correspond to the same first identifier.
  9. A communication device comprising a processor, memory, and a program or instruction stored in the memory and operable on the processor, wherein when the program or instruction is executed by the processor, the communication device The method involves determining the first space information of a target object by deciding whether the space information indicated in the downlink control information is suitable, or by determining that the first space information of the target object is the target space information when the first space information of the target object is not indicated in the downlink control information, wherein the reference resource corresponding to the target object is a plurality of control resource sets (CORESETs) , the search space associated with each CORESET is used for multiple transmissions of the same physical downlink control channel (PDCCH), each CORESET corresponds to one second space information, the target space information is the second space information corresponding to the CORESET with the smallest CORESET ID among the plurality of CORESETs , and the multiple transmissions of the same PDCCH are used to schedule the target object . This includes transmitting or receiving the target object by adopting the determined first space information, The aforementioned target is the physical downlink sharing information PDSCH or the physical uplink sharing channel PUSCH. The aforementioned communication equipment includes a terminal or base station, and is a communication device that causes something to happen.

Description

This application belongs to the field of wireless communication technology, and specifically relates to transmission methods, apparatus, communication equipment, and terminals. In related technologies, in some cases, the space information of a certain uplink channel or uplink signal needs to be determined based on the space information of a reference resource. Primarily includes: receiving space information for downlink channels and downlink signals when reception of space information for downlink channels and downlink signals is not configured, activated or instructed, and in other cases where it cannot be determined, where downlink channels include PDSCHs scheduled by Physical Downlink Shared Channels (PDSCHs) or Component Carriers (CCs), downlink signals include Aperiodic Channel State Information Reference Signals (AP-CSI-RSs), and transmitting space information for uplink channels and uplink signals when transmission of space information for uplink channels and uplink signals is not configured, activated or instructed, and in other cases where it cannot be determined, where uplink channels include Physical Uplink Shared Channels (PDSCHs) This includes the Uplink Shared Channel (PUSCH), the Physical Uplink Control Channel (PUCCH), and other similar channels. The uplink signal includes the Sounding Reference Signal (SRS), etc. In the above case, the downlink channel, the space information for receiving the downlink signal, the uplink channel, and the space information for transmitting the uplink signal generally correspond to the space information of the reference resource, where the reference resource may be the Control Resource Set (CORESET), the Physical Downlink Control Channel (PDCCH) that schedules the downlink channel/signal and uplink channel/signal, or other channels/signals. For example, if the upper-layer parameter tci-PresentInDCI, located in a single CORESET for a single terminal (User Equipment, UE), is set to "enabled," the UE assumes that the Downlink Control Information (DCI) format 1_1 or DCI format 1_2 in the PDCCH transmitted over this CORESET includes a Transmission Configuration Indication (TCI) field, which is used to indicate information including the spatially received beam, such as the TCI state. Only if the UE detects a DCI can it correctly decode the TCI state and determine the receiving beam used to receive the PDSCH scheduled by this PDCCH. A certain amount of time is required for the UE to detect the DCI and switch beams based on the TCI instruction, and if the DCI format 1_1 indicates a time offset for scheduling the PDSCH, then if the symbol interval between the last symbol of the PDCCH where the DCI is located and the first symbol of the single-slot or multi-slot PDSCH it schedules is greater than or equal to the threshold timeDurationForQCL, the UE may receive the PDSCH of the serving cell according to the received beam indicated by the TCI field in this DCI, i.e., the TCI state reference signal (RS) indicated by the Demodulation Reference Signal (DMRS) port and TCI field of the single-slot or multi-slot PDSCH is a quasi-collocation (Quasi It may be considered as Co-located (QCL). If the upper layer parameter tci-PresentInDCI, located in one CORESET, is set to "enabled", or if the upper layer parameter tci-PresentInDCI is not located, then all TCI code points activated by the Control Element (CE) of the Media Access Control (MAC) layer are mapped as a single TCI state, and the above time offset is smaller than timeDurationForQCL, then the UE has not completed DCI detection or the receive beam switching operation, and the UE may cache the received signals on these symbols using the default receive beam, thereby facilitating the demodulation of the scheduled PDSCH after successful DCI detection. The UE may receive the PDSCH using the default receive beam, i.e., the UE may consider the DMRS port of the serving cell's PDSCH and the RS in the QCL parameter for PDCCH QCL indication within the CORESET to be the QCL, where this CORESET is the CORESET with the smallest CORESET ID related to the monitoring search space (SS) in one or more CORESETs on the activated bandwidth portion (BWP) of the serving cell monitored by the UE in the nearest slot. However, in some scenarios, a reference resource for an uplink/downlink channel or uplink/downlink signal may correspond to multiple spatial information, and in such cases, the communication equipment cannot determine the spatial information for the uplink/downlink channel or uplink/downlink signal. For example, in a multi-transmission and reception point (TRP) scenario, as an implementation to enhance control channel reliability, the PDCCH is transmitted over multiple TRPs to reduce the probability of beamlink failure. In such a case, the PDCCH may correspond to multiple TCI states or QCLs, and if the UE considers the RS in the QCL parameter for PDCCH QCL indication in the DMRS port of the serving cell's PDSCH and CORESET to be the QCL