Method and apparatus for beam indication for physical uplink shared channel (PUSCH) considering multiple nodes scenario in a wireless communication system

摘要

A method and apparatus are disclosed from the perspective of a User Equipment (UE) in a wireless communication system, wherein the UE is configured with and/or is served in a serving cell by a network, wherein an active UL (Uplink) BWP (Bandwidth Part) of the UE is activated in the serving cell. In one embodiment, the method includes the UE receiving an indication and/or a configuration, which is indicative of or associated with a first value of the TRP (Transmission/Reception Point) identifier and a second value of the TRP identifier. The method also includes the UE receiving an indication and/or a configuration, which is indicative of or associated with a first group of PUCCH (Physical Uplink Control Channel) resource(s) of the active UL BWP, wherein the first group of PUCCH resource(s) is associated with or related to the first value of the TRP identifier. The method further includes the UE receiving an indication and/or a configuration, which is indicative of or associated with a second group of PUCCH resource(s) of the active UL BWP, wherein the second group of PUCCH resource(s) is associated with or related to the second value of the TRP identifier. Furthermore, the method includes the UE being scheduled to transmit a PUSCH (Physical Uplink Shared Channel) via a DCI (Downlink Control Information) format 0_0. In addition, the method includes the UE transmitting the PUSCH via a spatial relation of a PUCCH resource, wherein the PUCCH resource is selected or determined based on value of the TRP identifier associated with or related to the PUSCH.