Physical downlink control channel repetition in the presence of search space set switching
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, search space (SS) configuration information associated with switching between a first SS set group and a second SS set group. The UE may receive, from the base station, downlink control information associated with physical downlink control channel repetitions based at least in part on switching between the first SS set group and the second SS set group. Numerous other aspects are described.
1 . A user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
receive, from a base station, search space (SS) configuration information associated with switching between monitoring SS sets associated with a first SS set group and monitoring SS sets associated with a second SS set group,
wherein physical downlink control channel (PDCCH) candidates, included in different SS sets, are linked together for PDCCH repetition by having a same control channel element (CCE) index,
wherein the switch between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group dynamically enables or disables the PDCCH repetition for the PDCCH candidates included in the different SS sets based at least in part on:
enablement of the PDCCH repetition when the different SS sets are associated with an active SS set group, and
wherein, to switch between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group, the one or more processors are further configured to:
stop monitoring the SS sets associated with the first SS set group and start monitoring the SS sets associated with the second SS set group, or
stop monitoring the SS sets associated with the second SS set group and start monitoring the SS sets associated with the first SS set group; and
receive, from the base station, downlink control information (DCI) associated with PDCCH repetitions via a first PDCCH candidate, associated with the first SS set group, and via a second PDCCH candidate, associated with the second SS set group, that is linked to the first PDCCH candidate and that has a same CCE index as the first PDCCH candidate.
2 . The UE of claim 1 , wherein, to receive the DCI, the one or more processors are further configured to: selectively monitor the PDCCH repetitions based at least in part on switching between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group.
3 . The UE of claim 1 , wherein the one or more processors are further configured to, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set associated with the first SS set group, linked to a second PDCCH repetition, included in a second SS set associated with the second SS set group:
selectively monitor the first PDCCH repetition or the second PDCCH repetition to receive the DCI.
4 . The UE of claim 1 , wherein the one or more processors are further configured to, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set associated with the first SS set group, linked to a second PDCCH repetition, included in a second SS set associated with the second SS set group:
selectively monitor the first PDCCH repetition and the second PDCCH repetition based at least in part on the first PDCCH repetition being linked to the second PDCCH repetition.
5 . The UE of claim 1 , wherein the one or more processors are further configured to, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set associated with the first SS set group and with the second SS set group, linked to a second PDCCH repetition, included in a second SS set associated with the second SS set group:
selectively monitor the first PDCCH repetition and the second PDCCH repetition based at least in part on switching to monitoring the SS sets associated with the second SS set group.
6 . The UE of claim 1 , wherein the one or more processors are further configured to:
monitor a first PDCCH repetition, associated with the first SS set group, and a second PDCCH repetition, associated with the first SS set group, based at least in part on switching to monitoring the SS sets associated with the first SS set group.
7 . The UE of claim 1 , wherein the one or more processors are further configured to:
monitor a first PDCCH repetition, associated with the first SS set group and the second SS set group, and a second PDCCH repetition, associated with the first SS set group and the second SS set group, to receive the DCI.
8 . The UE of claim 1 , wherein the one or more processors are further configured to:
monitor a first PDCCH repetition, associated with the first SS set group and the second SS set group, and a second PDCCH repetition, associated with the first SS set group, based at least in part on switching to monitoring the SS sets associated with the first SS set group, or
monitor a first PDCCH repetition, associated with the first SS set group and the second SS set group, and a third PDCCH repetition, associated with the second SS set group, based at least in part on switching to monitoring the SS sets associated with the second SS set group.
9 . The UE of claim 1 , wherein the one or more processors are further configured to, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set, linked to a second PDCCH repetition, included in a second SS set, the first SS set and the second SS set being associated as a pair with the first SS set group:
selectively monitor the first PDCCH repetition and the second PDCCH repetition based at least in part on switching to monitoring the SS sets associated with the first SS set group to receive the DCI.
10 . The UE of claim 1 , wherein the one or more processors are further configured to, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set, linked to a second PDCCH repetition, included in a second SS set:
receive the first PDCCH repetition during a first slot;
receive the second PDCCH repetition during a second slot; and
selectively monitor the second PDCCH repetition when the switching takes effect after the first PDCCH repetition is received and before the second PDCCH repetition is received.
11 . The UE of claim 1 , wherein the one or more processors are further configured to, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set, linked to a second PDCCH repetition, included in a second SS set:
receive the first PDCCH repetition during a first slot;
receive the second PDCCH repetition during a second slot; and
refrain from monitoring the second PDCCH repetition when the switching takes effect after the first PDCCH repetition is received and before the second PDCCH repetition is received.
12 . The UE of claim 1 , wherein the one or more processors are further configured to, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set, linked to a second PDCCH repetition, included in a second SS set:
receive the first PDCCH repetition during a first slot;
receive the second PDCCH repetition during a second slot; and
selectively monitor the second PDCCH repetition to receive the DCI when the switching is delayed, from taking effect after the first PDCCH repetition is received and before the second PDCCH repetition is received, to taking effect after the second PDCCH repetition is received.
13 . The UE of claim 1 , wherein the DCI is first DCI, and wherein the one or more processors are configured to:
receive, prior to receiving the first DCI, second DCI indicating to switch between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group, wherein receiving the first DCI associated with the PDCCH repetitions is based at least in part on the second DCI.
14 . The UE of claim 1 , wherein the one or more processors are further configured to:
delay monitoring of the first PDCCH candidate by a period of time after the switch or a period of time after an indication to switch.
15 . A method of wireless communication performed by a user equipment (UE), comprising:
receiving, from a base station, search space (SS) configuration information associated with switching between monitoring SS sets associated with a first SS set group and monitoring SS sets associated with a second SS set group,
wherein physical downlink control channel (PDCCH) candidates, included in different SS sets, are linked together for PDCCH repetition by having a same control channel element (CCE) index,
wherein the switching between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group dynamically enables or disables the PDCCH repetition for the PDCCH candidates included in the different SS sets based at least in part on:
enablement of the PDCCH repetition when the different SS sets are associated with an active SS set group, and
wherein the switching between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group includes:
stopping monitoring the SS sets associated with the first SS set group and starting monitoring the SS sets associated with the second SS set group, or
stopping monitoring the SS sets associated with the second SS set group and starting monitoring the SS sets associated with the first SS set group; and
receiving, from the base station, downlink control information (DCI) associated with PDCCH repetitions via a first PDCCH candidate, associated with the first SS set group, and via a second PDCCH candidate, associated with the second SS set group, that is linked to the first PDCCH candidate and that has a same CCE index as the first PDCCH candidate.
16 . The method of claim 15 , further comprising: selectively monitoring the PDCCH repetitions based at least in part on switching between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group.
17 . The method of claim 15 , further comprising, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set associated with the first SS set group, linked to a second PDCCH repetition, included in a second SS set associated with the second SS set group: selectively monitoring the first PDCCH repetition or the second PDCCH repetition to receive the DCI.
18 . The method of claim 15 , further comprising, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set associated with the first SS set group, linked to a second PDCCH repetition, included in a second SS set associated with the second SS set group: selectively monitoring the first PDCCH repetition and the second PDCCH repetition based at least in part on the first PDCCH repetition being linked to the second PDCCH repetition.
19 . The method of claim 15 , further comprising, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set associated with the first SS set group and with the second SS set group, linked to a second PDCCH repetition, included in a second SS set associated with the second SS set group: selectively monitoring the first PDCCH repetition and the second PDCCH repetition based at least in part on switching to monitoring the SS sets associated with the second SS set group.
20 . The method of claim 15 , further comprising: monitoring a first PDCCH repetition, associated with the first SS set group, and a second PDCCH repetition, associated with the first SS set group, based at least in part on switching to monitoring the SS sets associated with the first SS set group.
21 . The method of claim 15 , further comprising: monitoring a first PDCCH repetition, associated with the first SS set group and the second SS set group, and a second PDCCH repetition, associated with the first SS set group and the second SS set group, to receive the DCI.
22 . The method of claim 15 , further comprising: monitoring a first PDCCH repetition, associated with the first SS set group and the second SS set group, and a second PDCCH repetition, associated with the first SS set group, based at least in part on switching to monitoring the SS sets associated with the first SS set group, or
monitoring a first PDCCH repetition, associated with the first SS set group and the second SS set group, and a third PDCCH repetition, associated with the second SS set group, based at least in part on switching to monitoring the SS sets associated with the second SS set group.
23 . The method of claim 15 , further comprising, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set, linked to a second PDCCH repetition, included in a second SS set, the first SS set and the second SS set being associated as a pair with the first SS set group: selectively monitoring the first PDCCH repetition and the second PDCCH repetition based at least in part on switching to monitoring the SS sets associated with the first SS set group to receive the DCI.
24 . The method of claim 15 , further comprising, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set, linked to a second PDCCH repetition, included in a second SS set: receiving the first PDCCH repetition during a first slot;
receiving the second PDCCH repetition during a second slot; and
selectively monitoring the second PDCCH repetition when the switching takes effect after the first PDCCH repetition is received and before the second PDCCH repetition is received.
25 . The method of claim 15 , further comprising, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set, linked to a second PDCCH repetition, included in a second SS set: receiving the first PDCCH repetition during a first slot;
receiving the second PDCCH repetition during a second slot; and
refraining from monitoring the second PDCCH repetition when the switching takes effect after the first PDCCH repetition is received and before the second PDCCH repetition is received.
26 . The method of claim 15 , further comprising, when the PDCCH repetitions include a first PDCCH repetition, included in a first SS set, linked to a second PDCCH repetition, included in a second SS set: receiving the first PDCCH repetition during a first slot;
receiving the second PDCCH repetition during a second slot; and
selectively monitoring the second PDCCH repetition to receive the DCI when the switching is delayed, from taking effect after the first PDCCH repetition is received and before the second PDCCH repetition is received, to taking effect after the second PDCCH repetition is received.
27 . The method of claim 15 , wherein the DCI is first DCI, and wherein the method further comprises:
receiving, prior to receiving the first DCI, second DCI indicating to switch between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group, wherein receiving the first DCI associated with the PDCCH repetitions is based at least in part on the second DCI.
28 . A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to:
receive, from a base station, search space (SS) configuration information associated with switching between monitoring SS sets associated with a first SS set group and monitoring SS sets associated with a second SS set group,
wherein physical downlink control channel (PDCCH) candidates, included in different SS sets, are linked together for PDCCH repetition by having a same control channel element (CCE) index,
wherein the switch between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group dynamically enables or disables the PDCCH repetition for the PDCCH candidates included in the different SS sets based at least in part on:
enablement of the PDCCH repetition when the different SS sets are associated with an active SS set group, and
wherein, to switch between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group, the one or more instructions further cause the one or more processors to:
stop monitoring the SS sets associated with the first SS set group and start monitoring the SS sets associated with the second SS set group, or
stop monitoring the SS sets associated with the second SS set group and start monitoring the SS sets associated with the first SS set group; and
receive, from the base station, downlink control information (DCI) associated with PDCCH repetitions via a first PDCCH candidate, associated with the first SS set group, and via a second PDCCH candidate, associated with the second SS set group, that is linked to the first PDCCH candidate and that has a same CCE index as the first PDCCH candidate.
29 . The non-transitory computer-readable medium of claim 28 , wherein the one or more instructions, that cause the one or more processors to receive the DCI, further cause the one or more processors to:
selectively monitor the PDCCH repetitions based at least in part on switching between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group.
30 . An apparatus for wireless communication, comprising:
means for receiving, from a base station, search space (SS) configuration information associated with switching between monitoring SS sets associated with a first SS set group and monitoring SS sets associated with a second SS set group,
wherein physical downlink control channel (PDCCH) candidates, included in different SS sets, are linked together for PDCCH repetition by having a same control channel element (CCE) index,
wherein the switching between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group dynamically enables or disables the PDCCH repetition for the PDCCH candidates included in the different SS sets based at least in part on:
enablement of the PDCCH repetition when the different SS sets are associated with an active SS set group, and
wherein the switching between monitoring the SS sets associated with the first SS set group and monitoring the SS sets associated with the second SS set group includes:
stopping monitoring the SS sets associated with the first SS set group and starting monitoring the SS sets associated with the second SS set group, or
stopping monitoring the SS sets associated with the second SS set group and starting monitoring the SS sets associated with the first SS set group; and
means for receiving, from the base station, downlink control information (DCI) associated with PDCCH repetitions via a first PDCCH candidate, associated with the first SS set group, and via a second PDCCH candidate, associated with the second SS set group, that is linked to the first PDCCH candidate and that has a same CCE index as the first PDCCH candidate.