Granted Patent B2

US 12,581,563 · App. 18/248,342 · Granted Mar 17, 2026

Inventors: Daniela Laselva (Klarup, DK); Samuli Turtinen (Ii, FI); Jussi-Pekka Koskinen (Oulu, FI); Nuno Pratas (Gistrup, DK)

Assignee: NOKIA TECHNOLOGIES OY

H04W76/27

Abstract

Claims (74)

1 . A method, comprising:

determining during a small data transmission (SDT) procedure with a network element, availability of data for transmission on a data radio bearer (DRB) not configured for SDT,

wherein, when the data for transmission on the DRB not configured for SDT is available, the method further comprises:

indicating to the network element while the SDT procedure is ongoing, that the data is available for transmission on the DRB not configured for SDT; and

aborting the SDT procedure.

2 . A method, comprising:

configuring a user equipment to trigger small data transmission (SDT) for data available for transmission on a data radio bearer (DRB) configured for SDT and indicate presence of data available for transmission on a DRB not configured for SDT;

receiving a SDT data transmission comprising the data available on the DRB configured for SDT; and

receiving an indication from the user equipment indicating the presence of the data available for transmission on the DRB not configured for SDT,

wherein the configuring the user equipment comprises configuring the user equipment to abort the SDT procedure in the presence of both the data available for transmission on the DRB configured for SDT and the data available for transmission on the DRB not configured for SDT.

3 . An apparatus, comprising:

at least one processor; and

at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:

determine during a small data transmission (SDT) procedure with a network element, availability of data for transmission on a data radio bearer (DRB) not configured for SDT; and

wherein, when the data for transmission on the DRB not configured for SDT is available, the instructions, when executed by the at least one processor, cause the apparatus at least to:

indicate to the network element while the SDT procedure is ongoing, that the data is available for transmission on the DRB not configured for SDT; and

abort the SDT procedure.

4 . The apparatus according to claim 3 , wherein the instructions, when executed by the at least one processor, cause the apparatus at least to:

determine availability of data for transmission on a DRB configured for SDT; and

trigger the SDT procedure when the data for transmission on the DRB configured for SDT is determined to be available.

5 . The apparatus according to claim 4 , wherein the instructions, when executed by the at least one processor, cause the apparatus at least to:

perform an SDT to the network element with the data for transmission on the DRB configured for SDT.

6 . The apparatus according to claim 4 ,

wherein the indication to the network element that the data is available for transmission on the DRB not configured for SDT is performed by transmitting a radio resource control (RRC) message, and

wherein the RRC message is multiplexed with the data of the DRB configured for SDT.

7 . The apparatus according to claim 4 ,

wherein when indicating to the network element that the data is available for transmission on the DRB not configured for SDT, the instructions, when executed by the at least one processor, cause the apparatus at least to indicate presence of the data for transmission on the DRB configured for SDT and the data for transmission on the DRB not configured for SDT, and

wherein the presence of the data for transmission on the DRB configured for SDT and the data for transmission on the DRB not configured for SDT is indicated in a BSR information.

8 . The apparatus according to claim 4 , wherein the instructions, when executed by the at least one processor, cause the apparatus at least to:

buffer the data for transmission on the DRB configured for SDT and the data for transmission on the DRB not configured for SDT.

9 . The apparatus according to claim 3 , wherein the instructions, when executed by the at least one processor, cause the apparatus at least to:

trigger a connection resume procedure when the data for transmission on the DRB not configured for SDT is determined to be available.

10 . The apparatus according to claim 3 ,

wherein when indicating to the network element that the data is available for transmission on the DRB not configured for SDT, the instructions, when executed by the at least one processor, cause the apparatus at least to indicate presence of the data in a buffer of the DRB not configured for SDT, and

wherein presence of the data in the buffer is indicated during the SDT procedure.

11 . The apparatus according to claim 3 , wherein the indicating to the network element that the data is available for transmission on the DRB not configured for SDT is performed via one of a buffer status report (BSR) a new medium access control control element, a service data adaptation protocol control protocol data unit, a packet data convergence protocol control protocol data unit, a radio link control control protocol data unit, or a connection resume message, and

wherein the indicating via the BSR is performed in the SDT procedure.

12 . The apparatus according to claim 3 , wherein the aborting is based on a priority of the data for transmission on the DRB configured for SDT or whether the data for transmission on the DRB configured for SDT has already been transmitted.

13 . The apparatus according to claim 3 , wherein, when the data for transmission on the DRB not configured for SDT is available, the instructions, when executed by the at least one processor, cause the apparatus at least to:

buffer the data for transmission on the DRB not configured for SDT while the SDT procedure is ongoing.

14 . The apparatus according to claim 13 , wherein, after the SDT procedure is completed, the instructions, when executed by the at least one processor, cause the apparatus at least to:

trigger a connection resume procedure for the data for transmission on the DRB not configured for SDT.

15 . An apparatus, comprising:

at least one processor; and

at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:

configure a user equipment to trigger small data transmission (SDT) for data available for transmission on a data radio bearer (DRB) configured for SDT and indicate presence of data available for transmission on a DRB not configured for SDT;

receive a SDT data transmission comprising the data available on the DRB configured for SDT; and

receive an indication from the user equipment indicating the presence of the data available for transmission on the DRB not configured for SDT,

wherein the configuring the user equipment comprises configuring the user equipment to abort the SDT procedure in the presence of both the data available for transmission on the DRB configured for SDT and the data available for transmission on the DRB not configured for SDT.

16 . The apparatus according to claim 15 , wherein the configuration of the user equipment is performed via a radio resource control (RRC) message.

17 . The apparatus according to claim 16 , wherein the RRC message triggers the user equipment to move from a RRC connected state to a RRC inactive state.

18 . The apparatus according to claim 15 ,

wherein the indication of the presence of the data available for transmission on the DRB not configured for SDT is received via one of

a buffer status report (BSR),

a new medium access control control element,

a service data adaptation protocol control protocol data unit,

a packet data convergence protocol control protocol data unit,

a radio link control control protocol data unit, or

a connection resume message, and

wherein the indication via the BSR is received in an SDT procedure.

19 . The apparatus according to claim 15 , wherein when configuring the user equipment, the instructions, when executed by the at least one processor, cause the apparatus at least to configure the user equipment about what indication related to the presence of the data available for transmission on the DRB not configured for SDT it should report, and when or whether to trigger such report.

20 . The apparatus according to claim 15 , wherein the instructions, when executed by the at least one processor, cause the apparatus at least to:

configure the user equipment to initiate a SDT to transmit allowed uplink SDT data.

21 . The apparatus according to claim 15 , wherein the indication is received by a RRC message that is multiplexed with the data of the DRB configured for SDT.

22 . A non-transitory computer readable medium comprising program instructions that, when executed by an apparatus, cause the apparatus to perform at least the following:

determining during a small data transmission (SDT) procedure with a network element, availability of data for transmission on a data radio bearer (DRB) not configured for SDT,

wherein, when the data for transmission on the DRB not configured for SDT is available, the program instructions, when executed by the apparatus, cause the apparatus to perform at least the following:

indicating to the network element while the SDT procedure is ongoing, that the data is available for transmission on the DRB not configured for SDT; and

aborting the SDT procedure.

23 . A non-transitory computer readable medium comprising program instructions that, when executed by an apparatus, cause the apparatus to perform at least the following:

configuring a user equipment to trigger small data transmission (SDT) for data available for transmission on a data radio bearer (DRB) configured for SDT and indicate presence of data available for transmission on a DRB not configured for SDT;

receiving a SDT data transmission comprising the data available on the DRB configured for SDT; and

receiving an indication from the user equipment indicating the presence of the data available for transmission on the DRB not configured for SDT,

wherein the configuring the user equipment comprises configuring the user equipment to abort the SDT procedure in the presence of both the data available for transmission on the DRB configured for SDT and the data available for transmission on the DRB not configured for SDT.

Assignments (4)

Continuity (2)

References Cited (51)