Granted Patent B2

US 12,652,606 · App. 18/244,427 · Granted Jun 9, 2026

Inventors: Taehun Kim (Fairfax, VA); Hyoungsuk Jeon (Centreville, VA); Esmael Hejazi Dinan (McLean, VA); Kyungmin Park (Vienna, VA); Jinsook Ryu (Oakton, VA); Peyman Talebi Fard (Vienna, VA)

Assignee: Ofinno, LLC

H04W48/06H04W48/14H04W76/27

Abstract

Claims (79)

1 . A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

transmit, by the wireless device while not in a radio resource control (RRC) connected state, to a base station that bars a first access category, a first message for a small data transmission (SDT) procedure, the first message comprising:

an RRC request message; and

second uplink data associated with a second access category that is not barred;

receive, by the wireless device while not in the RRC connected state, from the base station, a second message indicating subsequent transmission associated with the SDT procedure; and

transmit, by the wireless device while not in the RRC connected state, to the base station, based on the receiving the second message indicating the subsequent transmission associated with the SDT procedure, a packet associated with the first access category.

2 . The wireless device of claim 1 , wherein:

the first message is a Msg 3 or a Msg A; and

the second message is one or more of a Msg 4 or a Msg B.

3 . The wireless device of claim 1 , wherein the second message does not comprise an RRC setup message, an RRC resume message, and/or an RRC release message.

4 . The wireless device of claim 1 , wherein the second message comprises an uplink grant for the subsequent transmission associated with the SDT procedure.

5 . The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:

stop, based on the receiving the second message indicating the subsequent transmission associated with the SDT procedure, at least one timer associated with the barring of the first access category.

6 . The wireless device of claim 5 , wherein:

the wireless device starts the at least one timer associated with the barring of the first access category based on at least one of:

determining to transmit first uplink data associated with the first access category; and

the first access category being barred; and

the transmitting the packet associated with the first access category is based on the at least one timer associated with the barring of the first access category being stopped.

7 . The wireless device of claim 6 , wherein the wireless device receives the second message while the at least one timer associated with the barring of the first access category is running.

8 . The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:

receive, from the base station, barring control information indicating that the first access category is barred and that the second access category is not barred.

9 . A base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to:

receive, by the base station that bars a first access category from a wireless device not in a radio resource control (RRC) connected state, a first message for a small data transmission (SDT) procedure, the first message comprising:

an RRC request message; and

second uplink data associated with a second access category that is not barred;

transmit, based on receiving the first message, to the wireless device not in the RRC connected state, a second message indicating subsequent transmission associated with the SDT procedure; and

receive, from the wireless device not in the RRC connected state, a packet associated with the first access category.

10 . The base station of claim 9 , wherein the second message does not comprise an RRC setup message, an RRC resume message, and/or an RRC release message.

11 . The base station of claim 9 , wherein the instructions, when executed by the one or more processors, further cause the base station to:

determine an uplink resource for the subsequent transmission associated with the SDT procedure.

12 . The base station of claim 11 , wherein the second message comprises an uplink grant indicating the uplink resource.

13 . The base station of claim 9 , wherein the transmitting the second message is based on determining, by the base station, that the wireless device is allowed to continue the SDT procedure.

14 . The base station of claim 9 , wherein the instructions, when executed by the one or more processors, further cause the base station to:

transmit, to the wireless device, barring control information indicating that the first access category is barred and that the second access category is not barred.

15 . A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive, from a base station, a radio resource control (RRC) release message comprising:

a suspend configuration, wherein the suspend configuration comprises:

a resume identity;

a network hop chaining count (NCC) value; and

a value of a wait timer; and

a configured grant (CG) configuration parameter for a small data transmission (SDT) procedure, wherein the CG configuration parameter comprises:

a value of a time alignment (TA) timer for the CG; and

a first threshold for validating the TA;

based on the RRC release message:

transition to an RRC inactive state;

suspend one or more radio bearers except for a signal radio bearer 0;

start the TA timer for the CG; and

start the wait timer with the value of the wait timer;

initiate, based on determining one or more conditions being fulfilled, the SDT procedure, wherein the one or more conditions comprise:

a system information block (SIB) indicating the SDT;

a data volume of uplink data being less than or equal to a second threshold; and

the TA for the CG being valid based on the first threshold;

based on the initiating the SDT procedure:

derive, using the NCC value, security keys for integrity protection and/or ciphering;

configure to resume the integrity protection; and

apply the security keys for the ciphering to data/signal; and

transmit:

an RRC resume request message comprising the resume identity; and

a first packet.

16 . The wireless device of claim 15 , wherein the instructions further cause the wireless device to:

receive, from the base station,

a downlink packet; and

an RRC resume message;

based on receiving the RRC resume message:

resume at least one radio bearer of the one or more radio bearers;

stop the wait timer; and

transition to an RRC connected state.

17 . The wireless device of claim 16 , wherein the instructions further cause the wireless device to start a barring timer for an access category.

18 . The wireless device of claim 17 , wherein the instructions further cause the wireless device to stop, based on receiving the RRC resume message, the barring timer.

19 . The wireless device of claim 15 , wherein the TA for the CG being valid based on the first threshold is based on a reference signal received power (RSRP) of a serving cell having not increased by more than the first threshold and having not decreased by more than the first threshold.

20 . The wireless device of claim 15 , wherein the RRC release message further comprises:

a radio access network notification area (RNA) configuration; and

a radio access network (RAN) paging cycle.

Assignments (1)

Continuity (3)

References Cited (104)