Granted Patent B2

US 12,232,145 · App. 17/247,204 · Granted Feb 18, 2025

Inventors: Jing Lei (San Diego, CA); Huilin Xu (San Diego, CA); Peter Pui Lok Ang (San Diego, CA); Wanshi Chen (San Diego, CA); Krishna Kiran Mukkavilli (San Diego, CA); Tingfang Ji (San Diego, CA)

Assignee: QUALCOMM Incorporated

H04W72/51H04W24/10H04W72/23

Abstract

Claims (151)

1. A method of wireless communication performed by a user equipment (UE), comprising:

transmitting UE assistance information to a base station;

receiving an indication of a first zone identifier associated with a first physical downlink control channel (PDCCH) monitoring configuration for radio resource control (RRC) connected reduced-capability UEs and indication of a second zone identifier associated with a second PDCCH monitoring configuration for the RRC connected reduced-capability UEs,

wherein the first PDCCH monitoring configuration indicates a first set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs and the second PDCCH monitoring configuration indicates a second set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs,

wherein the first set of PDCCH monitoring parameters includes a first parameter that indicates a first search space type for one or more first search space sets associated with the first zone identifier and at least one of:

a parameter that indicates one or more control resource sets that the UE is to monitor,

a parameter that indicates a periodicity and an offset for one or more slots in which the UE is to perform PDCCH monitoring,

a parameter that indicates a duration in symbols of a PDCCH for which the UE is to perform the PDCCH monitoring, or

a parameter that indicates a quantity of symbols within each slot in which the UE is to perform the PDCCH monitoring,

wherein the second set of PDCCH monitoring parameters includes a second parameter that indicates a second search space type for one or more second search space sets associated with the second zone identifier, and

wherein the first set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs and the second set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs are reduced relative to a set of PDCCH monitoring parameters for non-reduced-capability UEs;

determining whether a group common PDCCH (GC-PDCCH) communication indicates that the first zone identifier or the second zone identifier is activated for an associated monitoring period,

wherein the GC-PDCCH indicates a first search space set configuration associated with the first zone identifier or a second search space set configuration associated with the second zone identifier,

wherein the first search space set configuration identifies the one or more first search space sets that are to be monitored by a group of the RRC connected reduced-capability UEs associated with the first zone identifier and the second search space set configuration identifies the one or more second search space sets that are to be monitored by a group of the RRC connected reduced-capability UEs associated with the second zone identifier; and

selectively performing one or more PDCCH blind decodes in the one or more first search space sets associated with the first zone identifier or the one or more second search space sets associated with the second zone identifier during the associated monitoring period based at least in part on determining whether the GC-PDCCH communication indicates that the first zone identifier or the second zone identifier is activated for the associated monitoring period.

2. The method of claim 1 , wherein the first zone identifier and the second zone identifier are included in a plurality of zone identifiers configured for a serving cell of the base station to which the UE is communicatively connected.

3. The method of claim 1 , wherein the first PDCCH monitoring configuration is based at least in part on the UE assistance information requested by the base station; and

wherein the first set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs indicates an early termination of PDCCH blind decoding for the RRC connected reduced-capability UEs relative to the non-reduced-capability UEs.

4. The method of claim 1 , wherein transmitting the UE assistance information comprises:

transmitting, based at least in part on receiving a request from the base station, the UE assistance information; and

wherein the UE assistance information identifies at least one of:

UE capability information associated with the UE,

one or more reference signal measurements,

positioning information associated with the UE,

one or more pathloss measurements, or

beam management information associated with the UE; and

wherein receiving the indication of the first zone identifier and the indication of the second zone identifier comprises:

receiving the indication of the first zone identifier and the indication of the second zone identifier based at least in part on transmitting the UE assistance information,

wherein the first zone identifier or the second zone identifier is semi-persistently configured for the UE by dedicated radio resource control signaling.

5. The method of claim 1 , wherein receiving the indication of the first zone identifier and the indication of the second zone identifier comprises:

receiving the indication of the first zone identifier and the indication of the second zone identifier based at least in part on transmitting a UE capability report to the base station,

wherein the UE capability report indicates a low mobility for the UE.

6. The method of claim 1 , wherein receiving the indication of the first zone identifier and the indication of the second zone identifier comprises:

receiving an indication of a plurality of zone identifiers based at least in part on transmitting a UE capability report to the base station,

wherein the plurality of zone identifiers includes the first zone identifier and the second zone identifier, and

wherein the UE capability report indicates a high mobility for the UE.

7. The method of claim 1 , wherein the first zone identifier is associated with a zone index or a zone radio network temporary identifier (Z-RNTI); and

wherein determining whether the GC-PDCCH communication indicates that the first zone identifier or the second zone identifier is activated for the associated monitoring period comprises:

determining whether the GC-PDCCH communication indicates that the Z-RNTI associated with the first zone identifier is activated for the associated monitoring period.

8. The method of claim 1 , wherein determining whether the group common PDCCH communication indicates that the first zone identifier or the second zone identifier is activated for the associated monitoring period comprises:

determining that the GC-PDCCH communication does not indicate that the first zone identifier or the second zone identifier is activated for the associated monitoring period; and

wherein selectively performing the one or more PDCCH blind decodes in the one or more first search space sets associated with the first zone identifier or the one or more second search space sets associated with the second zone identifier during the associated monitoring period comprises:

refraining from performing the one or more PDCCH blind decodes during the associated monitoring period based at least in part on determining that the GC-PDCCH communication does not indicate that the first zone identifier or the second zone identifier is activated for the associated monitoring period.

9. A method of wireless communication performed by a base station (BS), comprising:

transmitting, to a user equipment (UE), a request for UE assistance information;

transmitting, to the UE, an indication of a first zone identifier associated with a first short physical downlink control channel (sPDCCH) monitoring configuration determined for radio resource control (RRC) connected reduced-capability UEs and an indication of a second zone identifier associated with a second sPDCCH monitoring configuration for the RRC connected reduced-capability UEs,

wherein the first sPDCCH monitoring configuration indicates a first set of sPDCCH monitoring parameters for the RRC connected reduced-capability UEs and the second sPDCCH monitoring configuration indicates a second set of sPDCCH monitoring parameters for the RRC connected reduced-capability UEs, and

wherein the first set of sPDCCH monitoring parameters includes a first parameter that indicates a first search space type for one or more first search space sets associated with the first zone identifier and at least one of:

a parameter that indicates one or more control resource sets that the UE is to monitor,

a parameter that indicates a periodicity and an offset for one or more slots in which the UE is to perform sPDCCH monitoring,

a parameter that indicates a duration in symbols of a sPDCCH for which the UE is to perform the sPDCCH monitoring, or

a parameter that indicates a quantity of symbols within each slot in which the UE is to perform the sPDCCH monitoring,

wherein the second set of sPDCCH monitoring parameters includes a second parameter that indicates a second search space type for one or more second search space sets associated with the second zone identifier, and

wherein the first set of sPDCCH monitoring parameters for the RRC connected reduced-capability UEs and the second set of sPDCCH monitoring parameters for the RRC connected reduced-capability UEs are reduced relative to a set of PDCCH monitoring parameters for non-reduced-capability UEs;

transmitting a group common PDCCH (GC-PDCCH) communication that indicates whether the first zone identifier or the second zone identifier is activated for an associated monitoring period, wherein the GC-PDCCH indicates a first search space set configuration associated with the first zone identifier or a second search space set configuration associated with the second zone identifier, wherein the first search space set configuration identifies the one or more first search space sets that are to be monitored by a group of the RRC connected reduced-capability UEs associated with the first zone identifier and the second search space set configuration identifies the one or more second search space sets that are to be monitored by a group of the RRC connected reduced-capability UEs associated with the second zone identifier; and

selectively transmitting, based at least in part on whether the GC-PDCCH communication indicates that the first zone identifier or the second zone identifier is activated for the associated monitoring period, a sPDCCH communication for the UE in the one or more first search space sets associated with the first zone identifier or the one or more second search space sets associated with the second zone identifier during the associated monitoring period.

10. The method of claim 9 , wherein the first zone identifier and the second zone identifier are included in a plurality of zone identifiers configured for a serving cell of the base station.

11. The method of claim 9 , wherein determining the first sPDCCH monitoring configuration is based at least in part on the UE assistance information; and

wherein the first set of sPDCCH monitoring parameters for the RRC connected reduced-capability UEs indicates an early termination of PDCCH blind decoding for the RRC connected reduced-capability UEs relative to the non-reduced-capability UEs.

12. The method of claim 9 , further comprising:

receiving, from the UE and based at least in part on transmitting a request to the UE, a communication that identifies at least one of:

UE capability information associated with the UE,

one or more reference signal measurements,

positioning information associated with the UE,

one or more pathloss measurements, or

beam management information associated with the UE; and

wherein transmitting the indication of the first zone identifier and the indication of the second zone identifier comprises:

transmitting the indication of the first zone identifier and the indication of the second zone identifier based at least in part on receiving the communication,

wherein the first zone identifier or the second zone identifier is semi-persistently configured for the UE by dedicated radio resource control signaling.

13. The method of claim 9 , wherein transmitting the indication of the first zone identifier and the indication of the second zone identifier comprises:

transmitting the indication of the first zone identifier and the indication of the second zone identifier based at least in part on receiving a UE capability report from the UE,

wherein the UE capability report indicates a low mobility for the UE.

14. The method of claim 9 , wherein transmitting the indication of the first zone identifier and the indication of the second zone identifier comprises:

transmitting an indication of a plurality of zone identifiers for the UE based at least in part on receiving a UE capability report from the UE,

wherein the plurality of zone identifiers includes the first zone identifier and the second zone identifier, and

wherein the UE capability report indicates a high mobility for the UE.

15. The method of claim 9 , wherein the first zone identifier is associated with a zone index or a zone radio network temporary identifier (Z-RNTI); and

wherein the GC-PDCCH communication indicates whether the first zone identifier or the second zone identifier is activated for the associated monitoring period by indicating whether the zone index or Z-RNTI associated with the first zone identifier is activated for the associated monitoring period.

16. The method of claim 9 , wherein the GC-PDCCH communication does not indicate that the first zone identifier or the second zone identifier is activated for the associated monitoring period; and

wherein selectively transmitting the sPDCCH communication in the one or more first search space sets associated with the first zone identifier or the one or more second search space sets associated with the second zone identifier during the associated monitoring period comprises:

refraining from transmitting the sPDCCH communication during the associated monitoring period.

17. A user equipment (UE) for wireless communication, comprising:

one or more memories; and

one or more processors coupled to the one or more memories, the one or more processors individually or collectively configured to:

transmit UE assistance information to a base station;

receive an indication of a first zone identifier associated with a first physical downlink control channel (PDCCH) monitoring configuration for radio resource control (RRC) connected reduced-capability UEs and an indication of a second zone identifier associated with a second PDCCH monitoring configuration for the RRC connected reduced-capability UEs,

wherein the first PDCCH monitoring configuration indicates a first set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs,

wherein the first set of PDCCH monitoring parameters includes a parameter that indicates a first search space type for one or more first search space sets associated with the first zone identifier and at least one of:

a parameter that indicates one or more control resource sets that the UE is to monitor,

a parameter that indicates a periodicity and an offset for one or more slots in which the UE is to perform PDCCH monitoring,

a parameter that indicates a duration in symbols of a PDCCH for which the UE is to perform the PDCCH monitoring, or

a parameter that indicates a quantity of symbols within each slot in which the UE is to perform the PDCCH monitoring,

wherein the second set of PDCCH monitoring parameters includes a second parameter that indicates a second search space type for one or more second search space sets associated with the second zone identifier, and

wherein the first set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs and the second set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs are reduced relative to a set of PDCCH monitoring parameters for non-reduced-capability UEs;

determine whether a group common PDCCH (GC-PDCCH) communication indicates that the first zone identifier or the second zone identifier is activated for an associated monitoring period,

wherein the GC-PDCCH indicates a first search space set configuration associated with the first zone identifier or a second search space set configuration associated with the second zone identifier,

wherein the first search space set configuration identifies the one or more first search space sets that are to be monitored by a group of the RRC connected reduced-capability UEs associated with the first zone identifier and the second search space set configuration identifies the one or more second search space sets that are to be monitored by a group of the reduced-capability UEs associated with the second zone identifier; and

selectively perform one or more PDCCH blind decodes in the one or more first search space sets associated with the first zone identifier or the one or more second search space sets associated with the second zone identifier during the associated monitoring period based at least in part on determining whether the GC-PDCCH communication indicates that the first zone identifier or the second zone identifier is activated for the associated monitoring period.

18. The UE of claim 17 , wherein the one or more processors, when determining whether the group common PDCCH communication indicates that the first zone identifier or the second zone identifier is activated for the associated monitoring period, are configured to:

determine, based at least in part on a bitmap indicating activation information for a plurality of zone identifiers, that the GC-PDCCH communication indicates that a first zone associated with the first zone identifier is activated for the associated monitoring period; and

wherein the one or more processors, when selectively performing the one or more PDCCH blind decodes in the one or more first search space sets associated with the first zone identifier or the one or more second search space sets associated with the second zone identifier during the associated monitoring period, are configured to:

perform, based at least in part on the first PDCCH monitoring configuration associated with the first zone identifier, the one or more PDCCH blind decodes in the one or more first search space sets associated with the first zone identifier during the associated monitoring period based at least in part on determining that the GC-PDCCH communication indicates that the first zone identifier is activated for the associated monitoring period.

19. The UE of claim 18 , wherein the one or more processors are further configured to:

identify a short PDCCH (sPDCCH) communication based at least in part on performing a PDCCH blind decode of the one or more PDCCH blind decodes in a search space set of the one or more first search space sets; and

identify, based at least in part on the sPDCCH communication, a downlink assignment for a short physical downlink shared channel (sPDSCH) communication that carries additional downlink scheduling information or uplink grants for one or more UEs sharing a same zone radio network temporary identifier (Z-RNTI).

20. The UE of claim 19 , wherein the one or more processors, when identifying the downlink assignment for the sPDSCH communication, are configured to:

identify an indication of the downlink assignment for the sPDSCH communication in short downlink control information (sDCI) included in the sPDCCH communication.

21. The UE of claim 19 , wherein a cyclic redundancy check of the sPDCCH communication is masked by a group radio network temporary identifier associated with the one or more UEs.

22. The UE of claim 19 , wherein the sPDSCH communication comprises:

a medium access control (MAC) header that identifies respective cell radio network temporary identifiers (C-RNTIs) for each of the UE and a plurality of other UEs which are expected to receive a downlink control information (DCI) communication, and

an aggregation of MAC sub-protocol data units (sub-PDUs),

wherein each of the MAC sub-PDUs carries a DCI communication for the UE or one of the plurality of other UEs,

wherein a short DCI (sDCI) carried by the sPDSCH communication uses a same or a different channel coding of a sDCI carried by the sPDCCH communication, and

wherein an ordering of the respective C-RNTIs in the MAC header of the sPDSCH is consistent with an ordering of the MAC sub-PDUs.

23. A base station (BS) for wireless communication, comprising:

one or more memories; and

one or more processors coupled to the one or more memories, the one or more processors individually or collectively configured to:

transmit, to a user equipment (UE), a request for UE assistance information;

transmit, to the UE, an indication of a first zone identifier associated with a first physical downlink control channel (PDCCH) monitoring configuration determined for radio resource control (RRC) connected reduced-capability UEs and an indication of a second zone identifier associated with a second PDCCH monitoring configuration for the RRC connected reduced-capability UEs,

wherein the first PDCCH monitoring configuration indicates a first set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs,

wherein the first set of PDCCH monitoring parameters includes first a parameter that indicates a first search space type for one or more first search space sets associated with the first zone identifier and at least one of:

a parameter that indicates one or more control resource sets that the UE is to monitor,

a parameter that indicates a periodicity and an offset for one or more slots in which the UE is to perform PDCCH monitoring,

a parameter that indicates a duration in symbols of a PDCCH for which the UE is to perform the PDCCH monitoring, or

a parameter that indicates a quantity of symbols within each slot in which the UE is to perform the PDCCH monitoring,

wherein the second set of PDCCH monitoring parameters includes a second parameter that indicates a second search space type for one or more second search space sets associated with the second zone identifier, and

wherein the first set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs and the second set of PDCCH monitoring parameters for the RRC connected reduced-capability UEs are reduced relative to a set of PDCCH monitoring parameters for non-reduced-capability UEs;

transmit a group common PDCCH (GC-PDCCH) communication that indicates whether the first zone identifier or the second zone identifier is activated for an associated monitoring period,

wherein the GC-PDCCH indicates a first search space set configuration associated with the first zone identifier or a second search space set configuration associated with the second zone identifier, wherein the first search space set configuration identifies the one or more first search space sets that are to be monitored by a group of the RRC connected reduced-capability UEs associated with the first zone identifier and the second search space set configuration identifies the one or more second search space sets that are to be monitored by a group of the RRC connected reduced-capability UEs associated with the second zone identifier; and

selectively transmit, based at least in part on whether the GC-PDCCH communication indicates that the first zone identifier or the second zone identifier is activated for the associated monitoring period, a PDCCH communication for the UE in the one or more first search space sets associated with the first zone identifier or the one or more second search space sets associated with the second zone identifier during the associated monitoring period.

24. The BS of claim 23 , wherein the GC-PDCCH communication indicates that the first zone identifier is activated for the associated monitoring period; and

wherein the one or more processors, when selectively transmitting the PDCCH communication in the one or more first search space sets associated with the first zone identifier or the one or more second search space sets associated with the second zone identifier during the associated monitoring period, are configured to:

transmit the PDCCH communication in the one or more first search space sets associated with the first zone identifier during the associated monitoring period.

25. The BS of claim 24 , wherein the one or more processors, when transmitting the PDCCH communication, are configured to:

transmit the PDCCH communication based at least in part on the first PDCCH monitoring configuration associated with the first zone identifier.

26. The BS of claim 24 , wherein the one or more processors, when transmitting the PDCCH communication, are configured to:

transmit a short PDCCH (sPDCCH) communication in a search space set of the one or more first search space sets,

wherein the sPDCCH communication identifies a downlink assignment for a short physical downlink shared channel (sPDSCH) communication.

27. The BS of claim 26 , wherein the one or more processors are further configured to:

transmit the sPDSCH communication based at least in part on the downlink assignment,

wherein the sPDSCH communication identifies at least one of:

one or more other downlink assignments for the UE, or

one or more uplink grants for the UE.

28. The BS of claim 26 , wherein the downlink assignment for the sPDSCH communication is indicated in short downlink control information (sDCI) included in the sPDCCH communication.

29. The BS of claim 26 , wherein a cyclic redundancy check of the sPDCCH communication is masked by a group radio network temporary identifier associated with the UE.

30. The BS of claim 26 , wherein the sPDSCH communication comprises:

a medium access control (MAC) header that identifies respective cell radio network temporary identifiers (C-RNTIs) for each of the UE and a plurality of other UEs which are expected to receive a downlink control information (DCI) communication,

an aggregation of MAC sub-protocol data units (sub-PDUs),

wherein each of the MAC sub-PDUs carries a DCI communication for the UE or one of the plurality of other UEs,

wherein a short DCI (sDCI) carried by the sPDSCH communication uses a same or a different channel coding as an sDCI carried by the sPDCCH communication, and

wherein an ordering of the respective C-RNTIs in the MAC header of the sPDSCH is consistent with an ordering of the MAC sub-PDUs.

Assignments (1)

Continuity (2)

References Cited (41)