Granted Patent B2

US 12,532,343 · App. 18/038,554 · Granted Jan 20, 2026

Inventors: Yung-Lan Tseng (Taipei, TW); Hsin-Hsi Tsai (Taipei, TW); Mei-Ju Shih (Taipei, TW); Hung-Chen Chen (Taipei, TW)

Assignee: SHARP KABUSHIKI KAISHA

H04W72/542H04W72/1268H04W72/231H04W74/0833H04W74/0836H04W74/0838

Abstract

Claims (35)

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

receiving, from a base station (BS), an SDT configuration including a plurality of uplink configured grant (UL-CG) configurations for the SDT procedure, each of the plurality of UL-CG configurations being associated with a downlink reference signal received power (DL-RSRP) threshold;

applying one of the plurality of UL-CG configurations for the SDT procedure in a case that a DL-RSRP measurement result of a synchronization signal block (SSB) associated with the one of the plurality of UL-CG configurations is higher than one of a plurality of DL-RSRP thresholds; and

initiating, during the SDT procedure, a random access (RA) procedure in a case that none of a plurality of DL-RSRP measurement results of a plurality of SSBs associated with the plurality of UL-CG configurations is higher than any of the plurality of DL-RSRP thresholds,

wherein the SDT procedure includes a configured grant (CG) SDT procedure.

2 . The method of claim 1 , further comprising:

determining that the RA procedure is successfully completed after receiving a random access response (RAR) comprising a UL grant on a physical downlink control channel (PDCCH).

3 . The method of claim 1 , wherein a configured grant-time alignment timer (CG-TAT) is running during the SDT procedure.

4 . The method of claim 1 , wherein the RA procedure includes a 2-step RA procedure.

5 . The method of claim 1 , wherein the RA procedure includes a 4-step RA procedure.

6 . The method of claim 1 , wherein the RA procedure includes a contention-based random access (CBRA) procedure.

7 . The method of claim 1 , wherein the RA procedure includes a contention-free random access (CFRA) procedure.

8 . The method of claim 1 , wherein the RA procedure is not an RA-SDT procedure.

9 . A user equipment (UE) for performing a small data transmission (SDT) procedure, the UE comprising:

one or more processors; and

at least one memory coupled to the one or more processors, wherein the at least one memory stores one or more computer-executable-instructions that, when executed by the one or more processors, cause the UE to:

receive, from a base station (BS), an SDT configuration including a plurality of uplink configured grant (UL-CG) configurations for the SDT procedure, each of the plurality of UL-CG configurations being associated with a downlink reference signal received power (DL-RSRP) threshold;

apply one of the plurality of UL-CG configurations for the SDT procedure in a case that a DL-RSRP measurement result of a synchronization signal block (SSB) associated with the one of the plurality of UL-CG configurations is higher than one of a plurality of DL-RSRP thresholds; and

initiate, during the SDT procedure, a random access (RA) procedure in a case that none of a plurality of DL-RSRP measurement results of a plurality of SSBs associated with the plurality of UL-CG configurations is higher than any of the plurality of DL-RSRP thresholds,

wherein the SDT procedure includes a configured grant (CG) SDT procedure.

10 . The UE of claim 9 , wherein the one or more computer-executable instructions, when executed by the one or more processors, further cause the UE to:

determine that the RA procedure is successfully completed after receiving a random access response (RAR) comprising a UL grant on a physical downlink control channel (PDCCH).

11 . The UE of claim 9 , wherein a configured grant-time alignment timer (CG-TAT) is running during the SDT procedure.

12 . The UE of claim 9 , wherein the RA procedure includes a 2-step RA procedure.

13 . The UE of claim 9 , wherein the RA procedure includes a 4-step RA procedure.

14 . The UE of claim 9 , wherein the RA procedure includes a contention-based random access (CBRA) procedure.

15 . The UE of claim 9 , wherein the RA procedure includes a contention-free random access (CFRA) procedure.

16 . The UE of claim 9 , wherein the RA procedure is not an RA-SDT procedure.

17 . A base station (BS) for performing a small data transmission (SDT) procedure, the BS comprising:

one or more processors; and

at least one memory coupled to the one or more processors, wherein the at least one memory stores one or more computer-executable-instructions that, when executed by the one or more processors, cause the BS to:

transmit, to a user equipment (UE), an SDT configuration including a plurality of uplink configured grant (UL-CG) configurations for the SDT procedure, each of the plurality of UL-CG configurations being associated with a downlink reference signal received power (DL-RSRP) threshold;

receive, from the UE, one or more UL transmissions on one of the plurality of UL-CG configurations for the SDT procedure in a case that a DL-RSRP measurement result of a synchronization signal block (SSB) associated with the one of the plurality of UL-CG configurations is higher than one of a plurality of DL-RSRP thresholds; and

transmit, to the UE during the SDT procedure, a random access response in response to a random access (RA) procedure in a case that none of a plurality of DL-RSRP measurement results of a plurality of SSBs associated with the plurality of UL-CG configurations is higher than any of the plurality of DL-RSRP thresholds,

wherein the SDT procedure includes a configured grant (CG) SDT procedure.

Assignments (2)

Continuity (2)

References Cited (11)