METHOD AND DEVICE FOR PHYSICAL UPLINK CONTROL CHANNEL TRANSMISSION
A method of PUCCH transmission performed by a UE is provided. The method includes receiving, from a BS, a plurality of PUCCH configurations configured for a plurality of cells, a first PUCCH configuration of the plurality of PUCCH configurations including one or more first spatial relation information for a first cell of the plurality of cells, and a second PUCCH configuration of the plurality of PUCCH configurations including one or more second spatial relation information for a second cell of the plurality of cells; receiving, from the BS on a PDSCH, an activation message for activating at least one first spatial relation information or at least one second spatial relation information; and performing a first PUCCH transmission on the first cell by using a first spatial setting corresponding to the at least one first spatial relation information indicated in the activation message.
1 . A method for physical uplink control channel (PUCCH) transmission performed by a user equipment (UE), the method comprising:
receiving, from a base station (BS), a plurality of PUCCH configurations for a plurality of cells, a first PUCCH configuration of the plurality of PUCCH configurations including one or more first spatial relation information for a first cell of the plurality of cells, and a second PUCCH configuration of the plurality of PUCCH configurations including one or more second spatial relation information for a second cell of the plurality of cells;
receiving, from the BS on a physical downlink shared channel (PDSCH), an activation message for activating at least one first spatial relation information of the one or more first spatial relation information for the first cell or at least one second spatial relation information of the one or more second spatial relation information for the second cell; and
performing a first PUCCH transmission on the first cell by using a first spatial setting corresponding to the at least one first spatial relation information indicated in the activation message.
2 . The method of claim 1 , wherein the one or more first spatial relation information and the one or more second spatial relation information correspond to at least one index indicated in the plurality of PUCCH configurations.
3 . The method of claim 1 , further comprising:
performing a PUCCH cell switching from the first cell to the second cell in a case that the UE receives a PUCCH cell switching indication from the BS; and
performing a second PUCCH transmission on the second cell by using a second spatial setting corresponding to the at least one second spatial relation information in a case that the at least one second spatial relation information is indicated in the activation message.
4 . The method of claim 3 , wherein:
the first PUCCH transmission is transmitted on a first BandWidth Part (BWP), and
the second PUCCH transmission is transmitted on a second BWP.
5 . The method of claim 4 , wherein:
the first BWP is associated with a first Subcarrier Spacing (SCS) configuration, and
the second BWP is associated with a second SCS configuration.
6 . The method of claim 3 , further comprising:
applying the at least one first spatial relation information for the second PUCCH transmission in a case that the at least one second spatial relation information is not indicated in the activation message.
7 . The method of claim 1 , wherein the activation message corresponds to a Medium Access Control (MAC) Control Element (CE).
8 . The method of claim 1 , wherein the activation message indicates a first cell identity (ID) for the first cell and a first ID of the at least one first spatial relation information that is associated with the first cell ID, or a second cell ID for the second cell and a second ID of the at least one second spatial relation information that is associated with the second cell ID.
9 . The method of claim 8 , wherein, in a case that the first cell and the second cell belong to a same cell group, the first ID is the same as the second ID.
10 . The method of claim 1 , wherein the activation message includes a first field for the first cell and a second field for the second cell.
11 . A user equipment (UE) for performing physical uplink control channel (PUCCH) transmission, the UE comprising:
at least one processor; and
at least one memory coupled to the at least one processor and storing computer-executable instructions that, when executed by the at least one processor, cause the UE to:
receive, from a base station (BS), a plurality of PUCCH configurations for a plurality of cells, a first PUCCH configuration of the plurality of PUCCH configurations including one or more first spatial relation information for a first cell of the plurality of cells, and a second PUCCH configuration of the plurality of PUCCH configurations including one or more second spatial relation information for a second cell of the plurality of cells;
receive, from the BS, on a physical downlink shared channel (PDSCH), an activation message for activating at least one first spatial relation information of the one or more first spatial relation information for the first cell or at least one second spatial relation information of the one or more second spatial relation information for the second cell; and
perform a first PUCCH transmission on the first cell by using a first spatial setting corresponding to the at least one first spatial relation information indicated in the activation message.
12 . The UE of claim 11 , wherein the one or more first spatial relation information and the one or more second spatial relation information correspond to at least one index indicated in the plurality of PUCCH configurations.
13 . The UE of claim 11 , wherein the computer-executable instructions, when executed by the at least one processor, further cause the UE to:
perform a PUCCH cell switching from the first cell to the second cell in a case that the UE receives a PUCCH cell switching indication from the BS; and
perform a second PUCCH transmission on the second cell by using a second spatial setting corresponding to the at least one second spatial relation information in a case that the at least one second spatial relation information is indicated in the activation message.
14 . The UE of claim 13 , wherein:
the first PUCCH transmission is transmitted on a first BandWidth Part (BWP), and
the second PUCCH transmission is transmitted on a second BWP.
15 . The UE of claim 14 , wherein:
the first BWP is associated with a first Subcarrier Spacing (SCS) configuration, and
the second BWP is associated with a second SCS configuration.
16 . The UE of claim 13 , wherein the computer-executable instructions, when executed by the at least one processor, further cause the UE to:
apply the at least one first spatial relation information for the second PUCCH transmission in a case that the at least one second spatial relation information is not indicated in the activation message.
17 . The UE of claim 11 , wherein the activation message corresponds to a Medium Access Control (MAC) Control Element (CE).
18 . The UE of claim 11 , wherein the activation message indicates a first cell identity (ID) for the first cell and a first ID of the at least one first spatial relation information that is associated with the first cell ID, or a second cell ID for the second cell and a second ID of the at least one second spatial relation information that is associated with the second cell ID.
19 . The UE of claim 18 , wherein, in a case that the first cell and the second cell belong to a same cell group, the first ID is the same as the second ID.
20 . The UE of claim 11 , wherein the activation message includes a first field for the first cell and a second field for the second cell.