Dynamic uplink control channel grouping
Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support dynamic uplink control channel grouping. For example, a user equipment (UE) may receive control signaling indicating multiple uplink control channel groups for the UE, where each uplink control channel group of the multiple uplink control channel groups is associated with a different set of uplink control channel resources. Additionally, the UE may select an uplink control channel group for a component carrier (CC) associated with the UE, where the uplink control channel group is selected in accordance with a detected trigger at the UE. Further, the UE may transmit uplink control information for the CC in accordance with the selected uplink control channel group.
1 . A user equipment (UE), comprising:
one or more memories storing processor-executable code; and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:
receive control signaling indicating a plurality of uplink control channel groups for the UE, wherein each uplink control channel group of the plurality of uplink control channel groups is associated with a different set of uplink control channel resources;
select an uplink control channel group for a component carrier associated with the UE, wherein the uplink control channel group is selected in accordance with a detected trigger at the UE; and
transmit uplink control information for the component carrier in accordance with the selected uplink control channel group.
2 . The UE of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
receive second control signaling indicating the uplink control channel group for the component carrier associated with the UE, wherein the detected trigger is based at least in part on the second control signaling.
3 . The UE of claim 2 , wherein, to select the uplink control channel group for the component carrier, the one or more processors are individually or collectively operable to execute the code to cause the UE to:
select the uplink control channel group for the component carrier based at least in part on a time offset, wherein the time offset is based at least in part on transmitting feedback information associated with the second control signaling.
4 . The UE of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
receive second control signaling indicating a timer or a counter associated with the plurality of uplink control channel groups, wherein a first uplink control channel group of the plurality of uplink control channel groups is associated with a duration of the timer or a value of the counter being less than or equal to threshold and a second uplink control channel group of the plurality of uplink control channel groups is associated with expiration of the timer or the value of the counter being greater than the threshold, and wherein selecting the uplink control channel group for the component carrier is based at least in part on the timer or the counter.
5 . The UE of claim 4 , wherein the timer or the counter is associated with a first quantity of slots for which the UE receives no data transmission on the component carrier or a second quantity of slots for which the UE receives no third control message scheduling a data transmission on the component carrier in the first uplink control channel group of the plurality of uplink control channel groups.
6 . The UE of claim 1 , wherein the plurality of uplink control channel groups for the UE is associated with a plurality of uplink control channel group configurations, and the one or more processors are individually or collectively operable to execute the code to cause the UE to:
receive second control signaling indicating a first uplink control channel group configuration of the plurality of uplink control channel group configurations, wherein the uplink control channel group for the component carrier is based at least in part on the first uplink control channel group configuration, and wherein the detected trigger is based at least in part on the second control signaling.
7 . The UE of claim 6 , wherein, to receive the second control signaling, the one or more processors are individually or collectively operable to execute the code to cause the UE to:
receive an indication of an index corresponding to the first uplink control channel group configuration, wherein the second control signaling comprises the indication of the index.
8 . The UE of claim 6 , wherein, to select the uplink control channel group for the component carrier, the one or more processors are individually or collectively operable to execute the code to cause the UE to:
select the uplink control channel group for the component carrier based at least in part on a time offset, wherein the time offset is based at least in part on receiving the second control signaling or transmitting feedback information associated with the second control signaling.
9 . The UE of claim 1 , wherein, to select the uplink control channel group for the component carrier, the one or more processors are individually or collectively operable to execute the code to cause the UE to:
select the uplink control channel group for the component carrier based at least in part on a type of scheduling associated with the component carrier, wherein the detected trigger is associated with the type of scheduling.
10 . The UE of claim 9 , wherein a first uplink control channel group of the plurality of uplink control channel groups is associated with a first type of scheduling and a second uplink control channel group of the plurality of uplink control channel groups is associated with a second type of scheduling.
11 . The UE of claim 10 , wherein the first type of scheduling corresponds to at least one of multi-cell scheduling or cross-carrier scheduling and the second type of scheduling corresponds to single-cell scheduling.
12 . The UE of claim 1 , wherein, to transmit the uplink control information for the component carrier, the one or more processors are individually or collectively operable to execute the code to cause the UE to:
transmit the uplink control information for the component carrier using the set of uplink control channel resources associated with the selected uplink control channel group.
13 . The UE of claim 1 , wherein, to transmit the uplink control information for the component carrier, the one or more processors are individually or collectively operable to execute the code to cause the UE to:
multiplex the uplink control information on a set of uplink shared channel resources, wherein the set of uplink shared channel resources overlap at least partially with the set of uplink control channel resources associated with the selected uplink control channel group.
14 . The UE of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
select a second uplink control channel group for a second component carrier associated with the UE, wherein the second uplink control channel group is selected in accordance with the detected trigger at the UE; and
transmit second uplink control information for the second component carrier.
15 . The UE of claim 14 , wherein the uplink control channel group for the component carrier is different than the second uplink control channel group for the second component carrier.
16 . The UE of claim 14 , wherein the uplink control channel group for the component carrier is the same as the second uplink control channel group for the second component carrier.
17 . A network entity, comprising:
one or more memories storing processor-executable code; and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the network entity to:
transmit first control signaling indicating a plurality of uplink control channel groups for a user equipment (UE), wherein each uplink control channel group of the plurality of uplink control channel groups is associated with a different set of uplink control channel resources; and
receive uplink control information for a component carrier in an uplink control channel group of the plurality of uplink control channel groups.
18 . The network entity of claim 17 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the network entity to:
transmit second control signaling indicating the uplink control channel group for the component carrier.
19 . The network entity of claim 17 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the network entity to:
transmit second control signaling indicating a timer or a counter associated with the plurality of uplink control channel groups, wherein a first uplink control channel group of the plurality of uplink control channel groups is associated with a duration of the timer or a value of the counter being less than or equal to threshold and a second uplink control channel group of the plurality of uplink control channel groups is associated with expiration of the timer or the value of the counter being greater than the threshold, and wherein selecting the uplink control channel group for the component carrier is based at least in part on the timer or the counter.
20 . The network entity of claim 19 , wherein the timer or the counter is associated with a first quantity of slots for which the UE receives no data transmission on the component carrier or a second quantity of slots for which the UE receives no third control message scheduling a data transmission on the component carrier in the first uplink control channel group of the plurality of uplink control channel groups.
21 . The network entity of claim 17 , wherein the plurality of uplink control channel groups for the UE is associated with a plurality of uplink control channel group configurations, and the one or more processors are individually or collectively operable to execute the code to cause the network entity to:
transmit second control signaling indicating a first uplink control channel group configuration of the plurality of uplink control channel group configurations, wherein the uplink control channel group for the component carrier is based at least in part on the first uplink control channel group configuration.
22 . The network entity of claim 21 , wherein, to transmit the second control signaling, the one or more processors are individually or collectively operable to execute the code to cause the network entity to:
transmit an indication of an index corresponding to the first uplink control channel group configuration, wherein the second control signaling comprises the indication of the index.
23 . The network entity of claim 17 , wherein, to receive the uplink control information for the component carrier, the one or more processors are individually or collectively operable to execute the code to cause the network entity to:
receive the uplink control information for the component carrier using a set of uplink shared channel resources, wherein the set of uplink shared channel resources overlap at least partially with the set of uplink control channel resources associated with the uplink control channel group.
24 . The network entity of claim 17 , wherein, to receive the uplink control information for the component carrier, the one or more processors are individually or collectively operable to execute the code to cause the network entity to:
receive the uplink control information for the component carrier using the set of uplink control channel resources associated with the uplink control channel group.
25 . The network entity of claim 17 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the network entity to:
receive second uplink control information for a second component carrier in a second uplink control channel group.
26 . The network entity of claim 25 , wherein the uplink control channel group for the component carrier is different than the second uplink control channel group for the second component carrier, or the uplink control channel group for the component carrier is the same as the second uplink control channel group for the second component carrier.
27 . A method for wireless communications at a user equipment (UE), comprising:
receiving control signaling indicating a plurality of uplink control channel groups for the UE, wherein each uplink control channel group of the plurality of uplink control channel groups is associated with a different set of uplink control channel resources;
selecting an uplink control channel group for a component carrier associated with the UE, wherein the uplink control channel group is selected in accordance with a detected trigger at the UE; and
transmitting uplink control information for the component carrier in accordance with the selected uplink control channel group.
28 . The method of claim 27 , further comprising:
receiving second control signaling indicating the uplink control channel group for the component carrier associated with the UE, wherein the detected trigger is based at least in part on the second control signaling.
29 . A method for wireless communications at a network entity, comprising:
transmitting first control signaling indicating a plurality of uplink control channel groups for a user equipment (UE), wherein each uplink control channel group of the plurality of uplink control channel groups is associated with a different set of uplink control channel resources; and
receiving uplink control information for a component carrier in an uplink control channel group of the plurality of uplink control channel groups.
30 . The method of claim 29 , further comprising:
transmitting second control signaling indicating the uplink control channel group for the component carrier.