Configuration for ungrouped wake up signal and group wake up signal
The present disclosure relates to transmitting and receiving a group wake-up signal (WUS) in conjunction with an ungrouped WUS. A base station may group one or more UEs in a UE group, while other UEs may not be assigned to a UE group. The configuration of WUS resources and WUS sequences for grouped UEs and other UEs is a challenge. The base station may transmit, to one or more UEs in the UE group, a resource allocation of a group WUS resource within a set of WUS resources associated with a paging occasion that is assigned to the one or more UEs in the UE group. A UE, after receiving the resource allocation, may determine a location of the group WUS resource within the set of WUS resources. The UE may monitor for a group WUS at the determined location in the resource allocation of the group WUS resource.
1. A method of wireless communication at a user equipment (UE), comprising:
receiving, from a base station, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
monitoring for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
monitoring for the group WUS at a second WUS resource of M WUS resources associated with a second PO;
receiving a WUS sequence associated with a respective one of the first WUS resource or the second WUS resource, wherein the WUS sequence includes a scrambling sequence associated with the respective one of the first WUS resource or the second WUS resource and the WUS sequence has a phase shift that is based on the UE group.
2. The method of claim 1 , wherein the one or more UEs in the UE group belong to a same service type.
3. The method of claim 1 , wherein the monitoring comprises monitoring for the group WUS at different system frame numbers (SFNs) or POs using a WUS group alternation pattern associated with the M WUS resources.
4. The method of claim 3 , wherein the pattern associated with the M WUS resources is indicative of the first WUS resource and the second WUS resource for which each of the one or more UEs in the UE group are configured to monitor.
5. The method of claim 3 , wherein the pattern associated with the M WUS resources includes alternating UE groups of a minimum number of UE groups for each WUS resource of the M WUS resources.
6. The method of claim 3 , wherein the pattern associated with the M WUS resources is configured based on whether the first WUS resource is allocated for the group WUS and the first WUS resource includes a common WUS resources that corresponds to an ungrouped WUS sequence.
7. The method of claim 3 , wherein the pattern associated with the M WUS resources is configured based on whether the UE group is based on a paging probability of different service types.
8. The method of claim 3 , wherein the pattern associated with the M WUS resources is determined at least based on a discontinuous reception (DRX) cycle indicated in system information or is predefined.
9. The method of claim 8 , wherein the DRX cycle is a cell-specific DRX cycle.
10. The method of claim 8 , wherein the DRX cycle is configured based on values of UE-specific DRX cycle.
11. The method of claim 1 , wherein the phase shift is the same if the first WUS resource or the second WUS resource is used for the group WUS.
12. The method of claim 1 , further comprising:
monitoring for a common WUS sequence that is based on the first WUS resource or the second WUS resource.
13. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising:
means for receiving, from a base station, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
means for monitoring for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
means for monitoring for the group WUS at a second WUS resource of M WUS resources associated with a second PO;
receiving a WUS sequence associated with a respective one of the first WUS resource or the second WUS resource, wherein the WUS sequence includes a scrambling sequence associated with the respective one of the first WUS resource or the second WUS resource and the WUS sequence has a phase shift that is based on the UE group.
14. The apparatus of claim 13 , wherein the one or more UEs in the UE group belong to a same service type.
15. The apparatus of claim 13 , wherein the means for monitoring is further configured to monitor for the group WUS at different system frame numbers (SFNs) or POs using a WUS group alternation pattern associated with the M WUS resources.
16. The apparatus of claim 13 , further comprising:
means for receiving a WUS sequence associated with a respective one of the first WUS resource or the second WUS resource.
17. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising:
a transceiver;
at least one processor; and
a memory, coupled to the transceiver and the at least one processor, storing instructions thereon, which when executed by the at least one processor, cause the apparatus to:
receive, from a base station, via the transceiver, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
monitor for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
monitor for the group WUS at a second WUS resource of M WUS resources associated with a second PO;
receiving a WUS sequence associated with a respective one of the first WUS resource or the second WUS resource, wherein the WUS sequence includes a scrambling sequence associated with the respective one of the first WUS resource or the second WUS resource and the WUS sequence has a phase shift that is based on the UE group.
18. The apparatus of claim 17 , wherein the one or more UEs in the UE group belong to a same service type.
19. The apparatus of claim 17 , wherein the instructions, which when executed by the at least one processor, further causes the apparatus to monitor for the group WUS at different system frame numbers (SFNs) or POs using a WUS group alternation pattern associated with the M WUS resources.
20. A non-transitory computer-readable medium storing computer executable code for wireless communication at a user equipment (UE), the code, which when executed by at least one processor, causes the UE to:
receive, from a base station, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
monitor for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
monitor for the group WUS at a second WUS resource of M WUS resources associated with a second PO;
receiving a WUS sequence associated with a respective one of the first WUS resource or the second WUS resource, wherein the WUS sequence includes a scrambling sequence associated with the respective one of the first WUS resource or the second WUS resource and the WUS sequence has a phase shift that is based on the UE group.
21. The non-transitory computer-readable medium of claim 20 , wherein the code, which when executed by at least one processor, further causes the UE to:
receive a WUS sequence associated with a respective one of the first WUS resource or the second WUS resource.
22. A method of wireless communication at a user equipment (UE), comprising:
receiving, from a base station, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
monitoring for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
monitoring for the group WUS at a second WUS resource of M WUS resources associated with a second PO;
receiving a WUS sequence associated with a respective one of the first WUS resource or the second WUS resource wherein the WUS sequence includes a scrambling sequence associated with the respective one of the first WUS resource or the second WUS resource and the scrambling sequence different for different WUS resources based on different initialization seeds.
23. A method of wireless communication at a user equipment (UE), comprising:
receiving, from a base station, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
monitoring for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
monitoring for the group WUS at a second WUS resource of M WUS resources associated with a second PO, wherein the monitoring comprises monitoring for the group WUS using a scrambling sequence differs as between the first WUS resource and the second WUS resource.
24. A method of wireless communication at a user equipment (UE), comprising:
receiving, from a base station, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
monitoring for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
monitoring for the group WUS at a second WUS resource of M WUS resources associated with a second PO;
wherein the one or more UEs in the UE group are configured to one of:
alternate between the first WUS resource and M−1 WUS resources if the first WUS resource is allocated for the group WUS,
alternate between the second WUS resource and M WUS resources if the first WUS resource is not allocated for the group WUS, or
alternate between WUS resources based on an amount of the M WUS resources.
25. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising:
a transceiver;
at least one processor; and
a memory, coupled to the transceiver and the at least one processor, storing instructions thereon, which when executed by the at least one processor, cause the apparatus to:
receive, from a base station, via the transceiver, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
monitor for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
monitor for the group WUS at a second WUS resource of M WUS resources associated with a second PO;
receiving a WUS sequence associated with a respective one of the first WUS resource or the second WUS resource wherein the WUS sequence includes a scrambling sequence associated with the respective one of the first WUS resource or the second WUS resource and the scrambling sequence differs for different WUS resources based on different initialization seeds.
26. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising:
a transceiver;
at least one processor; and
a memory, coupled to the transceiver and the at least one processor, storing instructions thereon, which when executed by the at least one processor, cause the apparatus to:
receive, from a base station, via the transceiver, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
monitor for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
monitor for the group WUS at a second WUS resource of M WUS resources associated with a second PO;
wherein the monitoring comprises monitoring for the group WUS using a scrambling sequence that differ as between the first WUS resource and the second WUS resource.
27. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising:
a transceiver;
at least one processor; and
a memory, coupled to the transceiver and the at least one processor, storing instructions thereon, which when executed by the at least one processor, cause the apparatus to:
receive, from a base station, via the transceiver, a resource allocation for a group wake-up signal (WUS) associated with one or more UEs in a UE group, wherein the UE is within the UE group;
monitor for the group WUS at a first WUS resource of M WUS resources associated with a first paging opportunity (PO); and
monitor for the group WUS at a second WUS resource of M WUS resources associated with a second PO;
wherein the one or more UEs in the UE group are configured to one of:
alternate between the first WUS resource and M−1 WUS resources if the first WUS resource is allocated for the group WUS,
alternate between the second WUS resource and M WUS resources if the first WUS resource is not allocated for the group WUS, or
alternate between WUS resources based on an amount of the M WUS resources.