Granted Patent B2

US 12,349,082 · App. 17/555,517 · Granted Jul 1, 2025

Inventors: Hsin-Hsi Tsai (Taipei, TW); Heng-Li Chin (Taipei, TW); Mei-Ju Shih (Taipei, TW)

Assignee: SHARP KABUSHIKI KAISHA

H04W56/001H04L5/0051H04L5/0053H04L5/006H04L5/0085H04W72/1263H04W72/23H04W72/535H04W72/542H04W74/0833H04W76/30

Abstract

Claims (39)

1. A method performed by a user equipment (UE) for small data transmission (SDT), the method comprising:

receiving a configuration from a base station (BS), the configuration indicating a first reference signal received power (RSRP) threshold and a second RSRP threshold;

initiating an SDT procedure based on a configured grant (CG) resource in response to an RSRP of a downlink (DL) pathloss reference being higher than the first RSRP threshold;

in response to initiating the SDT procedure based on the CG resource:

selecting a synchronization signal/physical broadcast channel block (SSB) from an SSB set in a case that the SSB has a first RSRP above the second RSRP threshold, and

considering the CG resource as not being valid and initiating a random access (RA) procedure in response to none of SSBs in the SSB set having a respective RSRP above the second RSRP threshold.

2. The method according to claim 1 , wherein receiving the configuration from the BS comprises receiving the configuration from the BS via a radio resource control (RRC) release message.

3. The method according to claim 1 , wherein the SSB set is configured, by the BS, via a radio resource control (RRC) release message or via system information.

4. The method according to claim 1 , further comprising:

selecting a CG resource occasion corresponding to the selected SSB in the case that the first RSRP is above the second RSRP threshold.

5. The method according to claim 1 , wherein the first RSRP threshold is configured by an SDT configuration included in the configuration.

6. The method according to claim 1 , wherein the second RSRP threshold is configured by a CG configuration included in the configuration.

7. The method according to claim 1 , wherein the configuration further indicates a third RSRP threshold, the method further comprising:

determining the CG resource is valid in response to a change of the RSRP not being more than the third RSRP threshold.

8. The method according to claim 1 , further comprising:

determining the CG resource is valid in response to the CG resource being configured on a selected uplink (UL) carrier.

9. The method according to claim 8 , wherein the selected UL carrier is one of a normal uplink (NUL) carrier and a supplementary uplink (SUL) carrier.

10. A user equipment (UE), comprising:

a transceiver, used for transmitting or receiving signals;

at least one processor, coupled to the transceiver; and

at least one non-transitory computer-readable medium coupled to the at least one processor and storing one or more computer-executable instructions that, when executed by the at least one processor, cause the UE to:

receive, through the transceiver, a configuration from a base station (BS), the configuration indicating a first reference signal received power (RSRP) threshold and a second RSRP threshold;

initiate an SDT procedure via a configured grant (CG) resource in response to an RSRP of a downlink (DL) pathloss reference being higher than the first RSRP threshold;

in response to initiating the SDT procedure via the CG resource:

select a synchronization signal/physical broadcast channel block (SSB) from an SSB set in a case that the SSB has a first RSRP above the second RSRP threshold, and

consider the CG resource as not being valid and initiate a random access (RA) procedure in response to none of SSBs in the SSB set having a respective RSRP above the second RSRP threshold.

11. The UE according to claim 10 , wherein receiving the configuration from the BS comprises receiving the configuration from the BS via a radio resource control (RRC) release message.

12. The UE according to claim 10 , wherein the SSB set is configured, by the BS, via a radio resource control (RRC) release message or via system information.

13. The UE according to claim 10 , wherein the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to:

select a CG resource occasion corresponding to the selected SSB in the case that the first RSRP is above the second RSRP threshold.

14. The UE according to claim 10 , wherein the first RSRP threshold is configured by an SDT configuration included in the configuration.

15. The UE according to claim 10 , wherein the second RSRP threshold is configured by a CG configuration included in the configuration.

16. The UE according to claim 10 , wherein:

the configuration further indicates a third RSRP threshold, and

the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to:

determine the CG resource is valid in response to a change of the RSRP not being more than the third RSRP threshold.

17. The UE according to claim 10 , wherein the one or more computer-executable instructions, when executed by the at least one processor, further cause the UE to:

determine the CG resource is valid in response to the CG resource being configured on a selected uplink (UL) carrier.

18. The UE according to claim 17 , the selected UL carrier is one of a normal uplink (NUL) carrier and a supplementary uplink (SUL) carrier.

Assignments (2)

Continuity (4)

References Cited (27)