Granted Patent B2

US 12,512,954 · App. 17/641,514 · Granted Dec 30, 2025

Inventors: Bingchao Liu (Changping District, CN); Chenxi Zhu (Haidian District, CN); Wei Ling (Changping, CN); Lingling Xiao (Haidian District, CN)

Assignee: Lenovo (Beijing) Limited

H04L5/0096H04W72/0446H04W72/0453H04W72/23

Abstract

Claims (59)

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

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the UE to:

receive, from multiple transmission reception points (TRPs) including at least a first TRP and a second TRP, a plurality of downlink control information (DCIs) in a slot, each DCI of the plurality of DCIs having a respective bandwidth part (BWP) indicator field for indicating a respective BWP for a corresponding downlink (DL) reception or uplink (UL) transmission, and values of the BWP indicator fields in the plurality of DCIs indicate a same BWP with a same BWP-ID;

schedule the UE with the same BWP;

start a BWP inactivity timer upon detection of a DCI containing a BWP indicator field that indicates a BWP different from a default BWP;

continue to run the BWP inactivity timer if one or more DCIs are received, before the BWP inactivity timer expires, in a first control resource set (CORESET) configured with a first CORESET index value based at least in part on the first CORESET index value being assigned to the first TRP of the multiple TRPs; and

restart the BWP inactivity timer if one or more DCIs are received, before the BWP inactivity timer expires, in a second CORESET configured with a second CORESET index value based at least in part on the second CORESET index value being assigned to the second TRP of the multiple TRPs.

2 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to:

detect whether any one of the respective BWPs indicated in the plurality of DCIs is different from a current BWP which is used to receive the plurality of DCIs; and

upon detection that at least one of the respective BWPs indicated by the plurality of DCIs is different from the current BWP, perform a BWP change.

3 . The UE of claim 2 , wherein the at least one processor is configured to cause the UE to at least one of stop receiving or stop transmitting during a time period from an end of a symbol in the slot until a beginning of a second slot, wherein each of the plurality of DCIs includes a respective time domain resource assignment field for indicating a slot offset, and the second slot is indicated by a smaller value of the time domain resource assignment fields.

4 . The UE of claim 3 , wherein:

the slot comprises a sequence of symbols;

the symbol is a third symbol in the sequence of symbols; and

the plurality of DCIs are received no later than the symbol.

5 . The UE of claim 2 , wherein:

values of the BWP indicator fields in the plurality of DCIs indicate different BWPs;

the plurality of DCIs comprise a first DCI indicating a first BWP and a second DCI indicating a second BWP, the second DCI received after reception of the first DCI; and

the at least one processor is configured to cause the UE to switch to the first BWP indicated by the first DCI, ignoring the second DCI.

6 . The UE of claim 2 , wherein:

values of the BWP indicator fields in the plurality of DCIs indicate different BWPs;

the plurality of DCIs comprise a first DCI indicating a first BWP and received in one or more time-frequency resources identified by the first CORESET configured with at least one of the first CORESET index value or a first CORESET identifier (CORESET-ID) value, and a second DCI indicating a second BWP and received in one or more time-frequency resources identified by the second CORESET configured with at least one of the second CORESET index value or a second CORESET-ID value; and

the at least one processor is configured to cause the UE to one of switch to the first BWP based on the first CORESET index value being less than the second CORESET index value, or switch to the first BWP based on the first CORESET-ID value being less than the second CORESET-ID value.

7 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to determine a restart condition for the BWP inactivity timer according to a higher layer configuration.

8 . The UE of claim 1 , wherein the BWP inactivity timer restarts based on receiving the one or more DCIs in a non-default BWP before the BWP inactivity timer expires.

9 . The UE of claim 1 , wherein the first CORESET is selected from a set of configured CORESETs based on the first CORESET index value.

10 . A method performed by a user equipment (UE), the method comprising:

receiving, from multiple transmission reception points (TRPs) including at least a first TRP and a second TRP, a plurality of downlink control information (DCIs) in a slot, each DCI of the plurality of DCIs having a respective bandwidth part (BWP) indicator field for indicating a respective BWP for a corresponding downlink (DL) reception or uplink (UL) transmission;

detecting whether any one of the respective BWP indicator fields in the plurality of DCIs indicates a BWP different from a current BWP which is used to receive the DCIs;

starting a BWP inactivity timer based at least in part on detection that at least one of the respective BWP indicator fields indicates a BWP different from the current BWP;

continuing to run the BWP inactivity timer if one or more DCIs are received, before the BWP inactivity timer expires, in a first control resource set (CORESET) configured with a first CORESET index value based at least in part on the first CORESET index value being assigned to the first TRP of the multiple TRPs; and

restarting the BWP inactivity timer if one or more DCIs are received, before the BWP inactivity timer expires, in a second CORESET configured with a second CORESET index value based at least in part on the second CORESET index value being assigned to the second TRP of the multiple TRPs.

11 . The method of claim 10 , wherein values of the BWP indicator fields in the plurality of DCIs indicate a same BWP with a same BWP-ID.

12 . The method of claim 11 , further comprising stopping at least one of receiving or transmitting during a time period from an end of a symbol in the slot until a beginning of a second slot, wherein each DCI of the plurality of DCIs includes a respective time domain resource assignment field for indicating a slot offset, and the second slot is indicated by a smaller value of the time domain resource assignment fields.

13 . The method of claim 12 , wherein: the slot comprises a sequence of symbols;

the symbol is a third symbol in the sequence of symbols; and

the plurality of DCIs are received no later than the symbol.

14 . The method of claim 10 , wherein:

values of the BWP indicator fields in the plurality of DCIs indicate different BWPs;

the plurality of DCIs comprise a first DCI indicating a first BWP and a second DCI indicating a second BWP, the second DCI received after reception of the first DCI; and

the method further comprising switching to the first BWP indicated by the first DCI, ignoring the second DCI.

15 . The method of claim 10 , wherein:

values of the BWP indicator fields in the plurality of DCIs indicate different BWPs;

the plurality of DCIs comprise a first DCI indicating a first BWP and received in one or more time-frequency resources identified by the first CORESET configured with at least one of the first CORESET index value or a first CORESET identifier (CORESET-ID) value, and a second DCI indicating a second BWP and received in one or more time-frequency resources identified by the second CORESET configured with at least one of the second CORESET index value or a second CORESET-ID value; and

the method further comprising one of switching to the first BWP based on the first CORESET index value being less than the second CORESET index value, or switching to the first BWP based on the first CORESET-ID value being less than the second CORESET-ID value.

16 . The method of claim 10 , further comprising determining a restart condition for the BWP inactivity timer according to a higher layer configuration.

17 . The method of claim 10 , wherein the BWP inactivity timer restarts based on receiving the one or more DCIs in a non-default BWP before the BWP inactivity timer expires.

18 . The method of claim 10 , wherein the first CORESET is selected from a set of configured CORESETs based on the first CORESET index value.

19 . A processor for wireless communication, comprising:

at least one controller coupled with at least one memory and configured to cause the processor to:

receive, from multiple transmission reception points (TRPs) including at least a first TRP and a second TRP, a plurality of downlink control information (DCIs) in a slot, each DCI of the plurality of DCIs having a respective bandwidth part (BWP) indicator field for indicating a respective BWP for a corresponding downlink (DL) reception or uplink (UL) transmission, and values of the BWP indicator fields in the plurality of DCIs indicate a same BWP with a same BWP-ID;

schedule the processor with the same BWP;

start a BWP inactivity timer upon detection of a DCI containing a BWP indicator field that indicates a BWP different from a default BWP;

continue to run the BWP inactivity timer if one or more DCIs are received, before the BWP inactivity timer expires, in a first control resource set (CORESET) configured with a first CORESET index value based at least in part on the first CORESET index value being assigned to the first TRP of the multiple TRPs; and

restart the BWP inactivity timer if one or more DCIs are received, before the BWP inactivity timer expires, in a second CORESET configured with a second CORESET index value based at least in part on the second CORESET index value being assigned to the second TRP of the multiple TRPs.

20 . The processor of claim 19 , wherein the at least one controller is configured to cause the processor to:

detect whether any one of the respective BWPs indicated in the plurality of DCIs is different from a current BWP which is used to receive the plurality of DCIs; and

perform a BWP change based on detection that at least one of the respective BWPs indicated by the plurality of DCIs is different from the current BWP.

Assignments (2)

Continuity (1)

References Cited (37)