Method and apparatus of beam indication in a wireless communication system
AssigneeASUSTeK COMPUTER INC.
InventorsHsin-Hsi Tsai, Yu-Hsuan Guo, Jia-Hong Liou
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Abstract
A method and apparatus are disclosed from the perspective of a UE (User Equipment). In one embodiment, the method includes the UE receiving a first MAC-CE (Medium Access Control-Control Element) including or indicating a plurality of TCI (Transmission Configuration Indication) state IDs (Identities) to be activated for receiving PDSCH (Physical Downlink Shared Channel), wherein format of the first MAC-CE depends on amount of the plurality of TCI state IDs. The method further includes the UE activating a plurality of TCI states associated with the plurality of TCI state IDs included or indicated in the first MAC-CE for receiving the PDSCH in response to reception of the first MAC-CE.
Claims17
A method for a UE (User Equipment), comprising:
- receiving a first MAC-CE (Medium Access Control-Control Element) including a plurality of TCI (Transmission Configuration Indication) state IDs (Identities) to be activated for receiving PDSCH (Physical Downlink Shared Channel) via multiple TCI states concurrently;
- activating a plurality of TCI states associated with the plurality of TCI state IDs included in the first MAC-CE for receiving the PDSCH;
- receiving a second MAC-CE including a bitmap to indicate activation or deactivation of a specific TCI state for receiving the PDSCH;
- and
- activating, in response to reception of the second MAC-CE, the specific TCI state for receiving the PDSCH if a bit of the bitmap is set to a first value, and deactivating the specific TCI state for receiving the PDSCH if the bit is set to a second value different than the first value.
A User Equipment (UE), the UE comprising:
- a memory;
- and
- a processor operatively coupled to the memory, wherein the processor is configured to execute a program code to:
- receive a first MAC-CE (Medium Access Control-Control Element) including a plurality of TCI (Transmission Configuration Indication) state IDs (Identities) to be activated for receiving PDSCH (Physical Downlink Shared Channel) via multiple TCI states concurrently;
- activate a plurality of TCI states associated with the plurality of TCI state IDs included in the first MAC-CE for receiving the PDSCH;
- receive a second MAC-CE including a bitmap to indicate activation or deactivation of at last one a specific TCI state for receiving the PDSCH;
- and
- activate, in response to reception of the second MAC-CE, the specific TCI state for receiving the PDSCH if a bit of the bitmap is set to a first value, and deactivating the specific TCI state for receiving the PDSCH if the bit is set to a second value different than the first value.
A method for a network node, comprising:
- transmitting, to a UE (User Equipment), a first MAC-CE (Medium Access Control-Control Element) including a plurality of TCI (Transmission Configuration Indication) state IDs (Identities) to be activated for the UE to receive PDSCH (Physical Downlink Shared Channel) via multiple TCI states concurrently;
- transmitting the PDSCH to the UE via multiple TCI states among a plurality of TCI states concurrently based on the first MAC-CE, wherein the plurality of TCI states are associated with the plurality of TCI state IDs included in the first MAC-CE for receiving the PDSCH;
- and
- transmitting a second MAC-CE, to the UE, including a bitmap to indicate activation or deactivation of a specific TCI state for receiving the PDSCH, wherein a bit of the bitmap set to a first value indicates the UE to activate the specific TCI state for receiving the PDSCH, and the bit set to a second value, different from the first value, indicates the UE to deactivate the specific TCI state for receiving the PDSCH.
Dependencies are inferred from the claim text.