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US-12621828-B2 - Apparatus and method of wireless communication

US12621828B2US 12621828 B2US12621828 B2US 12621828B2US-12621828-B2

Abstract

An apparatus and a method of wireless communication are provided. The method by a user equipment (UE) includes being configured, by a base station, with a configuration of one or more transmission configuration indicator (TCI) states, wherein each TCI state includes one or more reference signals for a reception of downlink channels or signals and/or for a transmission of uplink channels or signals, and in each TCI state, being provided with at least one of configuration parameters.

Inventors

  • Li Guo

Assignees

  • GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date
20260505
Application Date
20221228

Claims (19)

  1. 1 . A wireless communication method by a user equipment (UE), comprising: being configured, by a base station, with a configuration of one or more transmission configuration indicator (TCI) states, wherein each TCI state comprises one or more reference signals for a reception of downlink channels or signals and/or for a transmission of uplink channels or signals; and in each TCI state, being provided with at least one of configuration parameters; wherein the method further comprises: being configured, by the base station, with a configuration of multi-transmission/reception point (TRP) transmission and/or a common TCI state operation mode in the multi-TRP transmission, and wherein the one or more TCI states comprise a first TCI state for TRP associated with CORESETPoolIndex with a value of 0 and/or a second TCI state for TRP associated with the CORESETPoolIndex with a value of 1; wherein when the UE is indicated with the first TCI state, the UE is requested to apply a quasi co-location (QCL) information included in the first TCI state on the reception of one or more of the following channels or signals: a physical downlink control channel (PDCCH) transmission in a control resource set (CORESET) configured or associated with the CORESETPoolIndex with the value of 0; a physical downlink shared channel (PDSCH) transmission scheduled by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; an access point (AP) channel state information reference signal (CSI-RS) resource triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; a PDSCH transmission of a semi-persistent scheduling (SPS) triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; an SPS PDSCH transmission configured or associated with the CORESETPoolIndex with the value of 0; or periodic or semi-persistent CSI-RS resource associated with the CORESETPoolIndex with the value of 0; wherein the UE is requested to apply information of a spatial filter and/or a pathloss reference signal included in the first TCI state on the transmission of one or more of the following channels or signals; a physical uplink shared channel (PUSCH) transmission scheduled by a PDCCH transmitted in a CORESET configured or associated with the CORESETPoolIndex with the value of 0; a PUSCH transmission of a configured grant that is activated by a downlink control information (DCI) detected in a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; a physical uplink control channel (PUCCH) transmission of a configured grant that is associated with the CORESETPoolIndex with the value of 0; a PUCCH transmission associated with the CORESETPoolIndex with the value of 0; a PUCCH transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; an SRS transmission that is associated with the CORESETPoolIndex with the value of 0; or an AP SRS transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; wherein when the UE is indicated with the second TCI state, the UE is requested to apply a QCL information included in the second TCI state on the reception of one or more of the following channels or signals; a PDCCH transmission in a CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PDSCH transmission scheduled by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; an AP CSI-RS resource triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PDSCH transmission of a SPS triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; an SPS PDSCH transmission configured or associated with the CORESETPoolIndex with the value of 1; or a periodic or semi-persistent CSI-RS resource associated with the CORESETPoolIndex with the value of 1; or, wherein the UE is requested to apply information of a spatial filter and/or a pathloss reference signal included in the second TCI state on the transmission of one or more of the following channels or signals; a PUSCH transmission scheduled by a PDCCH transmitted in a CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PUSCH transmission of a configured grant that is activated by a DCI detected in a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PUSCH transmission of a configured grant that is associated with the CORESETPoolIndex with the value of 1; a PUCCH transmission associated with the CORESETPoolIndex with the value of 1; a PUCCH transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; an SRS transmission that is associated with the CORESETPoolIndex with the value of 1; or an AP SRS transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1.
  2. 2 . The method of claim 1 , wherein the one or more reference signals comprise a configuration of a spatial filter for the transmission of the uplink channels or signals.
  3. 3 . The method of claim 1 , wherein each TCI state is associated with a pathloss reference signal for the transmission of the uplink channels or signals.
  4. 4 . The method of claim 1 , wherein the at least one of configuration parameters comprises: a reference signal providing information for determining a spatial filter for a PUSCH, a PUCCH, or a SRS resource comprising a synchronization signal/physical broadcast channel (SS/PBCH) block, a CSI-RS resource, or a SRS resource; or a reference signal providing a pathloss reference signal for a PUSCH, the PUCCH, or the SRS resource comprising the SS/PBCH block or the CSI-RS resource.
  5. 5 . The method of claim 1 , further comprising determining, by the UE, the TCI state for each channel or reference signal according to an associated TRP.
  6. 6 . The method of claim 5 , wherein when the UE receives a PDCCH, a PDSCH, and/or a CSI-RS resource that is associated with the CORESETPoolIndex with a value of 0, the UE applies the QCL configuration included in the first TCI state, and wherein when the UE transmits a PUSCH, a PUCCH, and/or an SRS resource that is associated with the CORESETPoolIndex with the value of 0, the UE applies the spatial filter and the pathloss reference signal included in the first TCI state.
  7. 7 . The method of claim 5 , wherein when the UE receives a PDCCH, a PDSCH, and/or a CSI-RS resource that is associated with the CORESETPoolIndex with a value of 1, the UE applies the QCL configuration included in the second TCI state, and wherein when the UE transmits the PUSCH, the PUCCH, and/or the SRS resource that is associated with the CORESETPoolIndex with the value of 1, the UE applies the spatial filter and the pathloss reference signal included in the second TCI state.
  8. 8 . The method of claim 1 , wherein the one or more TCI states are configured through DCI or a media access control (MAC) control element (CE).
  9. 9 . The method of claim 8 , wherein the DCI comprises a DCI format 1_1, a DCI format 1_2, a DCI format X1, or a DCI format Y1.
  10. 10 . The method of claim 9 , wherein the DCI format 1_1 or the DCI format 1_2 carrying a DCI field transmission configuration indication, a value of the DCI field transmission configuration indication indicates one TCI state for the UE and the UE applies an indicated TCI state on a PDCCH, a PDSCH, a PUSCH, a PUCCH, a CSI-RS resource, and/or an SRS resource that is associated with the same value of CORESETPoolIndex as the PDCCH carrying the DCI that indicates the TCI state.
  11. 11 . A wireless communication method by a base station, comprising: configuring, to a user equipment (UE), a configuration of one or more transmission configuration indicator (TCI) states, wherein each TCI state comprises one or more reference signals for a transmission of downlink channels or signals and/or for a reception of uplink channels or signals; and in each TCI state, providing, to the UE, at least one of configuration parameters; wherein the method further comprises configuring, to the UE, a configuration of multi-transmission/reception point (TRP) transmission and/or a common TCI state operation mode in the multi-TRP transmission, and wherein the one or more TCI states comprise a first TCI state for TRP associated with CORESETPoolIndex with a value of 0 and/or a second TCI state for TRP associated with the CORESETPoolIndex with a value of 1; wherein when the base station indicates the first TCI state to the UE, the base station requests the UE to apply a quasi co-location (QCL) information included in the first TCI state on the reception of one or more of the following channels or signals; a physical downlink control channel (PDCCH) transmission in a control resource set (CORESET) configured or associated with the CORESETPoolIndex with the value of 0; a physical downlink shared channel (PDSCH) transmission scheduled by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; an access point (AP) channel state information reference signal (CSI-RS) resource triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; a PDSCH transmission of a semi-persistent scheduling (SPS) triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; an SPS PDSCH transmission configured or associated with the CORESETPoolIndex with the value of 0; or a periodic or semi-persistent CSI-RS resource associated with the CORESETPoolIndex with the value of 0; wherein the base station requests the UE to apply information of a spatial filter and/or a pathloss reference signal included in the first TCI state on the transmission of one or more of the following channels or signals; a physical uplink shared channel (PUSCH) transmission scheduled by a PDCCH transmitted in a CORESET configured or associated with the CORESETPoolIndex with the value of 0; a PUSCH transmission of a configured grant that is activated by a downlink control information (DCI) detected in a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; a physical uplink control channel (PUSCH) transmission of a configured grant that is associated with the CORESETPoolIndex with the value of 0; a PUCCH transmission associated with the CORESETPoolIndex with the value of 0; a PUCCH transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; an SRS transmission that is associated with the CORESETPoolIndex with the value of 0; or an AP SRS transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; wherein when the base station indicates the second TCI state to the UE, the base station requests the UE to apply a QCL information included in the second TCI state on the reception of one or more of the following channels or signals; a PDCCH transmission in a CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PDSCH transmission scheduled by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; an AP CSI-RS resource triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PDSCH transmission of a SPS triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; an SPS PDSCH transmission configured or associated with CORESETPoolIndex with the value of 1; or a periodic or semi-persistent CSI-RS resource associated with the CORESETPoolIndex with the value of 1; or, wherein the base station requests the UE to apply information of a spatial filter and/or a pathloss reference signal included in the second TCI state on the transmission of one or more of the following channels or signals; a PUSCH transmission scheduled by a PDCCH transmitted in a CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PUSCH transmission of a configured grant that is activated by a DCI detected in a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PUSCH transmission of a configured grant that is associated with the CORESETPoolIndex with the value of 1; a PUCCH transmission associated with the CORESETPoolIndex with the value of 1; a PUCCH transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; an SRS transmission that is associated with the CORESETPoolIndex with the value of 1; or an AP SRS transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1.
  12. 12 . A user equipment (UE), comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver; wherein the processor is configured to perform operations of: being configured, by a base station, with a configuration of one or more transmission configuration indicator (TCI) states, wherein each TCI state comprises one or more reference signals for a reception of downlink channels or signals and/or for a transmission of uplink channels or signals; and in each TCI state, being provided with at least one of configuration parameters; wherein the processor is further configured to perform operations of: being configured, by the base station, with a configuration of multi-transmission/reception point (TRP) transmission and/or a common TCI state operation mode in the multi-TRP transmission, and wherein the one or more TCI states comprise a first TCI state for TRP associated with CORESETPoolIndex with a value of 0 and/or a second TCI state for TRP associated with the CORESETPoolIndex with a value of 1; wherein when the UE is indicated with the first TCI state, the UE is requested to apply a quasi co-location (QCL) information included in the first TCI state on the reception of one or more of the following channels or signals; a physical downlink control channel (PDCCH) transmission in a control resource set (CORESET) configured or associated with the CORESETPoolIndex with the value of 0; a physical downlink shared channel (PDSCH) transmission scheduled by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; an access point (AP) channel state information reference signal (CSI-RS) resource triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; a PDSCH transmission of a semi-persistent scheduling (SPS) triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; an SPS PDSCH transmission configured or associated with the CORESETPoolIndex with the value of 0; or a periodic or semi-persistent CSI-RS resource associated with the CORESETPoolIndex with the value of 0; wherein the UE is requested to apply information of a spatial filter and/or a pathloss reference signal included in the first TCI state on the transmission of one or more of the following channels or signals; a physical uplink shared channel (PUSCH) transmission scheduled by a PDCCH transmitted in a CORESET configured or associated with the CORESETPoolIndex with the value of 0; a PUSCH transmission of a configured grant that is activated by a downlink control information (DCI) detected in a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; a physical uplink control channel (PUCCH) transmission of a configured grant that is associated with the CORESETPoolIndex with the value of 0; a PUCCH transmission associated with the CORESETPoolIndex with the value of 0; a PUCCH transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; an SRS transmission that is associated with the CORESETPoolIndex with the value of 0; or an AP SRS transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 0; wherein when the UE is indicated with the second TCI state, the UE is requested to apply a QCL information included in the second TCI state on the reception of one or more of the following channels or signals; a PDCCH transmission in a CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PDSCH transmission scheduled by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; an AP CSI-RS resource triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PDSCH transmission of a SPS triggered by the PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; an SPS PDSCH transmission configured or associated the with CORESETPoolIndex with the value of 1; or a periodic or semi-persistent CSI-RS resource associated with the CORESETPoolIndex with the value of 1; or, wherein the UE is requested to apply information of a spatial filter and/or a pathloss reference signal included in the second TCI state on the transmission of one or more of the following channels or signals; a PUSCH transmission scheduled by a PDCCH transmitted in a CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PUSCH transmission of a configured grant that is activated by a DCI detected in a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; a PUSCH transmission of a configured grant that is associated with the CORESETPoolIndex with the value of 1; a PUCCH transmission associated with the CORESETPoolIndex with the value of 1; a PUCCH transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1; an SRS transmission that is associated with the CORESETPoolIndex with the value of 1; or an AP SRS transmission that is triggered by a PDCCH transmitted in the CORESET configured or associated with the CORESETPoolIndex with the value of 1.
  13. 13 . The UE of claim 12 , wherein the one or more reference signals comprise a configuration of a spatial filter for the transmission of the uplink channels or signals.
  14. 14 . The UE of claim 12 , wherein each TCI state is associated with a pathloss reference signal for the transmission of the uplink channels or signals.
  15. 15 . The UE of claim 12 , wherein the at least one of configuration parameters comprises: a reference signal providing information for determining a spatial filter for a PUSCH, a PUCCH, or a SRS resource comprising a synchronization signal/physical broadcast channel (SS/PBCH) block, a CSI-RS resource, or a SRS resource; or a reference signal providing a pathloss reference signal for a PUSCH, the PUCCH, or the SRS resource comprising the SS/PBCH block or the CSI-RS resource.
  16. 16 . The UE of claim 12 , wherein the processor is configured to perform operations of: determining the TCI state for each channel or reference signal according to an associated TRP.
  17. 17 . The UE of claim 16 , wherein when the UE receives a PDCCH, a PDSCH, and/or a CSI-RS resource that is associated with the CORESETPoolIndex with a value of 0, the UE applies the QCL configuration included in the first TCI state, and wherein when the UE transmits a PUSCH, a PUCCH, and/or an SRS resource that is associated with the CORESETPoolIndex with the value of 0, the UE applies the spatial filter and the pathloss reference signal included in the first TCI state.
  18. 18 . The UE of claim 16 , wherein when the UE receives a PDCCH, a PDSCH, and/or a CSI-RS resource that is associated with the CORESETPoolIndex with a value of 1, the UE applies the QCL configuration included in the second TCI state, and wherein when the UE transmits the PUSCH, the PUCCH, and/or the SRS resource that is associated with the CORESETPoolIndex with the value of 1, the UE applies the spatial filter and the pathloss reference signal included in the second TCI state.
  19. 19 . A base station, comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver; wherein the processor is configured to perform the method of claim 11 .

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is a continuation application of International Patent Application No. PCT/CN2021/107957, filed on Jul. 22, 2021, which is based on and claims priority from U.S. Patent Application No. 63/076,514, filed on Sep. 10, 2020, the disclosures of which are hereby incorporated by reference in their entirety. BACKGROUND OF DISCLOSURE 1. Field of the Disclosure The present disclosure relates to the field of communication systems, and more particularly, to an apparatus and a method of wireless communication, which can provide a good communication performance and/or high reliability. 2. Description of the Related Art New radio (NR) system introduces a multi-transmission/reception point (TRP) based non-coherent joint transmission. Multiple TRPs are connected through backhaul link for coordination. The backhaul link can be ideal or non-ideal. In the case of ideal backhaul, the TRPs can exchange dynamic physical downlink shared channel (PDSCH) scheduling information with short latency and thus different TRPs can coordinate a PDSCH transmission per PDSCH transmission. While, in non-ideal backhaul case, the information exchange between TRPs has large latency and thus the coordination between TRPs can only be semi-static or static. NR/5G system supports multi-beam operation on downlink and uplink physical channels and reference signals. The use case for supporting the multi-beam operation mainly is for deployment of high-frequency band system, where high-gain analog beamforming is used to combat large path loss. In current designs, a main drawback of multi-operation in multi-TRP systems is large signaling overhead and latency of beam switching operation. A beam indication is signaled for per control resource set (CORESET) of each TRP. The beam indication is per physical uplink control channel (PUCCH) resource. The beam indication is per physical uplink shared channel (PUSCH) and per PDSCH. Large number of medium access control (MAC) control element (CE) signaling commands are needed to switch beams of all downlink (DL) channels, uplink (UL) channels and reference signals. The consequence is reduced system capacity and enlarged beam switch latency. Therefore, there is a need for an apparatus (such as a user equipment (UE) and/or a base station) and a method of wireless communication, which can solve issues in the prior art, reach a good balance between a resource overhead and a good positioning performance in a system deployment, improve a system capacity, improve a beam switch latency, provide a good communication performance, and/or provide high reliability. SUMMARY Embodiments of the present disclosure provide an apparatus (such as a user equipment (UE) and/or a base station) and a method of wireless communication. In a first aspect of the present disclosure, a method of wireless communication by a user equipment (UE) comprises being configured, by a base station, with a configuration of one or more transmission configuration indicator (TCI) states, wherein each TCI state comprises one or more reference signals for a reception of downlink channels or signals and/or for a transmission of uplink channels or signals, and in each TCI state, being provided with at least one of configuration parameters. In a second aspect of the present disclosure, a method of wireless communication by a base station comprises configuring, to a user equipment (UE), a configuration of one or more transmission configuration indicator (TCI) states, wherein each TCI state comprises one or more reference signals for a transmission of downlink channels or signals and/or for a reception of uplink channels or signals, and in each TCI state, providing, to the UE, at least one of configuration parameters. In a third aspect of the present disclosure, a user equipment comprises a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured, by a base station, with a configuration of one or more transmission configuration indicator (TCI) states, wherein each TCI state comprises one or more reference signals for a reception of downlink channels or signals and/or for a transmission of uplink channels or signals, and in each TCI state, the processor is provided with at least one of configuration parameters. In a fourth aspect of the present disclosure, a base station comprises a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to perform the method of the second aspect. BRIEF DESCRIPTION OF DRAWINGS In order to illustrate the embodiments of the present disclosure or related art more clearly, the following figures will be described in the embodiments are briefly introduced. It is obvious that the drawings are merely some embodiments of the present disclosure, a person having ordinary skill in this field can obtain other figures according to these figures without paying the premise. FIG. 1A is a sche