Dynamic change of mapping payload size to PUCCH configuration
Aspects described herein relate to dynamically updating a mapping of uplink control information (UCI) payload size to the one or more physical uplink control channel (PUCCH) resource sets or the one or more PUCCH formats. For example, a base station or a user equipment (UE) may update the mapping when the UE is in a coverage enhancement condition. The base station or UE may dynamically update the mapping of UCI payload size to the one or more PUCCH resource sets or the one or more PUCCH formats. The UE may map a UCI payload to a selected PUCCH resource set or PUCCH format according to the updated mapping to generate a UCI. Based on the updated mappings, the UE can accordingly transmit UCI based on a selected PUCCH resource set or format, or a base station can receive the UCI based on the selected PUCCH resource set or format.
1. A method of wireless communication, comprising:
determining a first configuration of one or more physical uplink control channel (PUCCH) resource sets or one or more PUCCH formats;
dynamically updating a mapping of uplink control information (UCI) payload size to the one or more PUCCH resource sets or to the one or more PUCCH formats, wherein dynamically updating the mapping of the UCI payload size includes changing a threshold payload size that is applicable to the one or more PUCCH resource sets or applicable to the one or more PUCCH formats, wherein the change to the threshold payload size is based on signaling that implicitly indicates a change to PUCCH configuration;
mapping a UCI payload to a selected PUCCH resource set or a selected PUCCH format according to the updated mapping based on a comparison between the UCI payload size and the threshold payload size to generate a UCI; and
transmitting the UCI based on the selected PUCCH resource set or the selected PUCCH format.
2. The method of claim 1 , wherein dynamically updating the mapping of UCI payload size includes switching between the first configuration and an alternative configuration of the one or more PUCCH resource sets or the one or more PUCCH formats.
3. The method of claim 1 , wherein the implicit signaling is a coverage enhancement indication.
4. The method of claim 1 , wherein the implicit signaling is based on the UCI including an acknowledgment of a physical downlink shared channel (PDSCH) transmission that carries a beam switching MAC-CE.
5. The method of claim 1 , wherein determining the first configuration of the one or more PUCCH resource sets and the one or more PUCCH formats includes receiving a radio resource control message.
6. The method of claim 1 , wherein dynamically updating the mapping of UCI payload size to the one or more PUCCH resource sets comprises dynamically updating the threshold payload size for each of the one or more PUCCH resource sets.
7. The method of claim 6 , wherein mapping the UCI payload to the selected PUCCH resource set according to the updated mapping to generate the UCI comprises sequentially comparing the UCI payload to each of the dynamically updated threshold payload sizes for the one or more PUCCH resource sets.
8. A method of wireless communication, comprising:
configuring a user equipment (UE) with a first configuration of one or more physical uplink control channel (PUCCH) resource sets or one or more PUCCH formats;
dynamically updating a mapping of uplink control information (UCI) payload size to the one or more PUCCH resource sets or to the one or more PUCCH formats for the UE, wherein dynamically updating the mapping of the UCI payload size includes changing a threshold payload size of the that is applicable to the one or more PUCCH resource sets or applicable to the one or more PUCCH formats, wherein the change to the threshold payload size is based on signaling that implicitly indicates a change to PUCCH configuration; and
receiving a UCI from the UE on a selected PUCCH resource set or using a selected PUCCH format based on a comparison between the threshold payload size of the updated mapping and a payload size of the UCI.
9. The method of claim 8 , wherein dynamically updating the mapping of UCI payload size includes switching between the first configuration and an alternative configuration of the one or more PUCCH resource sets or the one or more PUCCH formats.
10. The method of claim 8 , wherein the signaling that implicitly indicates the change to the PUCCH configuration is a coverage enhancement indication.
11. The method of claim 8 , wherein the signaling that implicitly indicates the change to the PUCCH configuration is a beam switching MAC-CE.
12. The method of claim 8 , wherein configuring the first configuration of the one or more PUCCH resource sets or the one or more PUCCH formats includes transmitting a radio resource control message.
13. An apparatus for wireless communication, comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the transceiver and the memory,
wherein the one or more processors are configured to execute the instructions to:
determine a first configuration of one or more physical uplink control channel (PUCCH) resource sets or one or more PUCCH formats;
dynamically update a mapping of uplink control information (UCI) payload size to the one or more PUCCH resource sets or to the one or more PUCCH formats by changing a threshold payload size that is applicable to the one or more PUCCH resource sets or applicable to the one or more PUCCH formats, wherein the change to the threshold payload size is based on signaling that implicitly indicates a change to PUCCH configuration;
map a UCI payload to a selected PUCCH resource set or a selected PUCCH format according to the updated mapping based on a comparison between the UCI payload size and the threshold payload size to generate a UCI; and
transmit the UCI based on the selected PUCCH resource set or the selected PUCCH format.
14. The apparatus of claim 13 , wherein to dynamically update the mapping of UCI payload size, the one or more processors are configured to switch between the first configuration and an alternative configuration of the one or more PUCCH resource sets or the one or more PUCCH formats.
15. The apparatus of claim 13 , wherein the one or more processors are configured to:
dynamically update the threshold payload size for each of the one or more PUCCH resource sets; and
sequentially compare the UCI payload to each of the dynamically updated threshold payload sizes for the one or more PUCCH resource sets.
16. An apparatus for wireless communication, comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the transceiver and the memory,
wherein the one or more processors are configured to execute the instructions to:
configure a user equipment (UE) with a first configuration of one or more physical uplink control channel (PUCCH) resource sets or one or more PUCCH formats;
dynamically update a mapping of uplink control information (UCI) payload size to the one or more PUCCH resource sets or to the one or more PUCCH formats for the UE by changing a threshold payload size that is applicable to the one or more PUCCH resource sets or applicable to the one or more PUCCH formats, wherein the change to the threshold payload size is based on signaling that implicitly indicates a change to PUCCH configuration; and
receive a UCI from the UE on a selected PUCCH resource set or using a selected PUCCH format based on a comparison between the threshold payload size of the updated mapping and a payload size of the UCI.