Acknowledgement location and timing for group-common downlink control information
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a physical uplink control channel resource, dedicated to the UE for transmitting a feedback message for group-common downlink control information (DCI), based at least in part on a resource configuration. The UE may transmit the feedback message based at least in part on whether the group-common DCI is successfully received. Numerous other aspects are provided.
1 . A method of wireless communication performed by a user equipment (UE), comprising:
determining a physical uplink control channel (PUCCH) resource, dedicated to the UE for transmitting a feedback message for group-common downlink control information (DCI), based at least in part on a resource configuration and a PUCCH resource indicator (PRI) corresponding to the UE in the group-common DCI;
receiving an indication of a common offset in the group-common DCI;
receiving an indication of a UE-specific offset in an RRC message; and
transmitting the feedback message, after a specified amount of time from a receipt of an end of the group-common DCI, based at least in part on whether the group-common DCI is successfully received, wherein the specified amount of time includes the common offset and the UE-specific offset.
2 . The method of claim 1 ,
wherein a location of the PRI in the group-common DCI is specified by the resource configuration.
3 . The method of claim 1 ,
wherein transmitting the feedback message comprises:
transmitting an acknowledgement message based at least in part on a determination that the group-common DCI is successfully received.
4 . The method of claim 1 ,
wherein transmitting the feedback message comprises:
transmitting a negative acknowledgement message based at least in part on a determination that the group-common DCI is not successfully received.
5 . A method of wireless communication performed by a network entity, comprising:
transmitting group-common downlink control information (DCI) to a group of user equipments (UEs), wherein the group-common DCI includes an indication of a common offset corresponding the group of UEs;
transmitting an indication of a UE-specific offset in an RRC message to a UE in the group of UEs;
determining a physical uplink control channel (PUCCH) resource, dedicated to the UE for transmitting a feedback message for the group-common DCI, based at least in part on a resource configuration for the UE and a PUCCH resource indicator (PRI) corresponding to the UE in the group-common DCI; and
receiving the feedback message from the UE in the PUCCH resource dedicated to the UE, wherein the feedback message is transmitted from the UE after a specified amount of time from a receipt of an end of the group-common DCI at the UE, and wherein the specified amount of time includes the common offset and the UE-specific offset.
6 . The method of claim 5 ,
wherein a location of the PRI in the group-common DCI is specified by the resource configuration.
7 . A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors coupled to the memory, the one or more processors configured to:
determine a physical uplink control channel (PUCCH) resource, dedicated to the UE for transmitting a feedback message for group-common downlink control information (DCI), based at least in part on a resource configuration and a PUCCH resource indicator (PRI) corresponding to the UE in the group-common DCI;
receive an indication of a common offset in the group-common DCI;
receive an indication of a UE-specific offset in an RRC message; and
transmit the feedback message, after a specified amount of time from a receipt of an end of the group-common DCI, based at least in part on whether the group-common DCI is successfully received, wherein the specified amount of time includes the common offset and the UE-specific offset.
8 . The UE of claim 7 ,
wherein the one or more processors, to transmit the feedback message, are configured to transmit an acknowledgement message based at least in part on a determination that the group-common DCI is successfully received.
9 . The UE of claim 7 ,
wherein the one or more processors, to transmit the feedback message, are configured to transmit a negative acknowledgement message based at least in part on a determination that the group-common DCI is not successfully received.
10 . The UE of claim 7 ,
wherein the one or more processors are configured to receive the resource configuration in a radio resource control message.
11 . The UE of claim 7 ,
wherein a location of the PRI in the group-common DCI is specified by the resource configuration.
12 . The UE of claim 7 ,
wherein the UE is in a group of UEs associated with the group-common DCI, and wherein the group-common DCI includes a UE-specific PRI for each UE in the group of UEs.
13 . The UE of claim 7 ,
wherein the specified amount of time is a predetermined amount of time.
14 . The UE of claim 7 ,
wherein the specified amount of time spans a specified quantity of transmission slots.
15 . The UE of claim 7 ,
wherein the one or more processors are configured to receive an indication of the specified amount of time in the group-common DCI.
16 . The UE of claim 7 ,
wherein the UE is in a group of UEs associated with the group-common DCI, and the common offset is common to the group of UEs.
17 . The UE of claim 16 ,
wherein the one or more processors are configured to receive an indication of the common offset in a radio resource control message.
18 . The UE of claim 16 ,
wherein the common offset is a predetermined common offset.
19 . The UE of claim 16 ,
wherein the one or more processors are configured to receive an indication of the UE-specific offset or the common offset in the group-common DCI.
20 . The UE of claim 19 ,
wherein the one or more processors are configured to receive the indication of the UE-specific offset in a portion of the group-common DCI.
21 . The UE of claim 7 ,
wherein the specified amount of time for the UE is a same amount of time as a specified amount of time of another UE in a group of UEs, and wherein a first frequency resource for the UE is a different frequency resource than a second frequency resource for the other UE.
22 . A network entity for wireless communication, comprising:
a memory; and
one or more processors coupled to the memory, the one or more processors configured to:
transmit group-common downlink control information (DCI) to a group of user equipments (UEs), wherein the group-common DCI includes an indication of a common offset corresponding the group of UEs;
transmit an indication of a UE-specific offset in an RRC message to a UE in the group of UEs;
determine a physical uplink control channel (PUCCH) resource, dedicated to the UE for transmitting a feedback message for the group-common DCI, based at least in part on a resource configuration for the UE and a PUCCH resource indicator (PRI) corresponding to the UE in the group-common DCI; and
receive the feedback message from the UE in the PUCCH resource dedicated to the UE, wherein the feedback message is transmitted from the UE after a specified amount of time from a receipt of an end of the group-common DCI at the UE, and wherein the specified amount of time includes the common offset and the UE-specific offset.
23 . The network entity of claim 22 ,
wherein the one or more processors, when receiving the feedback message, are configured to receive an acknowledgement message or a negative acknowledgement message.
24 . The network entity of claim 22 ,
wherein the one or more processors are configured to schedule a communication for the UE based at least in part on the feedback message from the UE.
25 . The network entity of claim 22 ,
wherein a location of the PRI in the group-common DCI is specified by the resource configuration.
26 . The network entity of claim 22 ,
wherein the group-common DCI includes a UE-specific PRI for each UE in the group of UEs.
27 . The network entity of claim 22 ,
wherein the one or more processors are configured to configure the UE to use a predetermined amount of time as the specified amount of time.
28 . The network entity of claim 22 ,
wherein the specified amount of time spans a specified quantity of transmission slots.
29 . The network entity of claim 22 ,
wherein the one or more processors are configured to transmit an indication of the specified amount of time in the group-common DCI.
30 . The network entity of claim 22 ,
wherein the specified amount of time includes a UE specific offset and a common offset is common to the group of UEs.
31 . The network entity of claim 30 ,
wherein the one or more processors are configured to configure the UE to use a predetermined offset as the common offset.
32 . The network entity of claim 30 ,
wherein the one or more processors are configured to transmit an indication of the UE-specific offset and an indication of the common offset in the group-common DCI.
33 . The network entity of claim 32 ,
wherein the one or more processors are configured to transmit the indication of the UE-specific offset in a portion of the group-common DCI.
34 . The network entity of claim 22 ,
wherein the specified amount of time for the UE is a same amount of time as a specified amount of time of another UE in the group of UEs, and wherein a first frequency resource for the UE is a different frequency resource than a second frequency resource for the other UE.