Granted Patent B2

US 12,369,083 · App. 19/027,244 · Granted Jul 22, 2025

Inventors: Taehun Kim (Fairfax, VA); Hyoungsuk Jeon (Centreville, VA); Esmael Hejazi Dinan (McLean, VA); Jian Xu (McLean, VA); Kyungmin Park (Vienna, VA); Hua Zhou (Vienna, VA); Fasil Abdul Latheef (Dresden, DE)

Assignee: Ofinno, LLC

H04W36/0072H04W36/08H04W76/27

Abstract

Claims (65)

1. A method comprising:

receiving, by a wireless device from a base station, a user equipment (UE) capability enquiry message;

transmitting, to the base station, a UE capability information message indicating a maximum number of candidate cells for early timing advance acquisition (ETA);

receiving, from the base station, a radio resource control (RRC) reconfiguration message comprising a layer 1 and/or layer 2 triggered mobility (LTM) configuration, wherein the LTM configuration comprises:

a first configuration for layer 1 measurement reporting;

a second configuration of resources for the layer 1 measurement reporting; and

a configuration for a candidate cell;

transmitting, to the base station and based on the first configuration and the second configuration, a layer 1 measurement report;

receiving, from the base station, a downlink control information (DCI) indicating the candidate cell for ETA;

transmitting, via the candidate cell and based on receiving the DCI, a random access preamble for ETA;

receiving a cell switch command, for LTM, indicating:

the configuration of the candidate cell; and

a TA value of the candidate cell; and

in response to receiving the cell switch command:

applying the configuration of the candidate cell; and

transmitting, based on the TA value and via the candidate cell, a physical uplink shared channel (PUSCH).

2. The method of claim 1 , wherein the candidate cell is a candidate cell for the LTM.

3. The method of claim 1 , wherein the base station comprises a first base station distributed unit and a base station central unit.

4. The method of claim 3 , wherein the first base station distributed unit is a serving base station distributed unit of the wireless device and a second base station distributed unit is a candidate base station distributed unit for the LTM of the wireless device.

5. The method of claim 1 , wherein transmitting the random access preamble comprises transmitting the random access preamble via a resource.

6. The method of claim 5 , wherein the resource comprises a physical random access channel (PRACH) resource and/or sounding reference signal (SRS) resource.

7. The method of claim 1 , further comprising sending, by the wireless device to a distributed unit of the base station and based on receiving the RRC reconfiguration message, an RRC reconfiguration complete message.

8. 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 user equipment (UE) capability enquiry message;

transmit, to the base station, a UE capability information message indicating a maximum number of candidate cells for early timing advance acquisition (ETA);

receive, from the base station, a radio resource control (RRC) reconfiguration message comprising a layer 1 and/or layer 2 triggered mobility (LTM) configuration, wherein the LTM configuration comprises:

a first configuration for layer 1 measurement reporting;

a second configuration of resources for the layer 1 measurement reporting; and

a configuration for a candidate cell;

transmit, to the base station and based on the first configuration and the second configuration, a layer 1 measurement report;

receive, from the base station, a downlink control information (DCI) indicating the candidate cell for ETA;

transmit, via the candidate cell and based on receiving the DCI, a random access preamble for ETA;

receive a cell switch command, for LTM, indicating:

the configuration of the candidate cell; and

a TA value of the candidate cell; and

in response to receiving the cell switch command:

apply the configuration of the candidate cell; and

transmit, based on the TA value and via the candidate cell, a physical uplink shared channel (PUSCH).

9. The wireless device of claim 8 , wherein the candidate cell is a candidate cell for the LTM.

10. The wireless device of claim 8 , wherein the base station comprises a first base station distributed unit and a base station central unit.

11. The wireless device of claim 10 , wherein the first base station distributed unit is a serving base station distributed unit of the wireless device and a second base station distributed unit is a candidate base station distributed unit for the LTM of the wireless device.

12. The wireless device of claim 8 , wherein transmitting the random access preamble comprises transmitting the random access preamble via a resource.

13. The wireless device of claim 12 , wherein the resource comprises a physical random access channel (PRACH) resource and/or sounding reference signal (SRS) resource.

14. The wireless device of claim 8 , further comprising sending, by the wireless device to a distributed unit of the base station and based on receiving the RRC reconfiguration message, an RRC reconfiguration complete message.

15. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:

receive, from a base station, a user equipment (UE) capability enquiry message;

transmit, to the base station, a UE capability information message indicating a maximum number of candidate cells for early timing advance acquisition (ETA);

receive, from the base station, a radio resource control (RRC) reconfiguration message comprising a layer 1 and/or layer 2 triggered mobility (LTM) configuration, wherein the LTM configuration comprises:

a first configuration for layer 1 measurement reporting;

a second configuration of resources for the layer 1 measurement reporting; and

a configuration for a candidate cell;

transmit, to the base station and based on the first configuration and the second configuration, a layer 1 measurement report;

receive, from the base station, a downlink control information (DCI) indicating the candidate cell for ETA;

transmit, via the candidate cell and based on receiving the DCI, a random access preamble for ETA;

receive a cell switch command, for LTM, indicating:

the configuration of the candidate cell; and

a TA value of the candidate cell; and

in response to receiving the cell switch command:

apply the configuration of the candidate cell; and

transmit, based on the TA value and via the candidate cell, a physical uplink shared channel (PUSCH).

16. The non-transitory computer-readable medium of claim 15 , wherein the candidate cell is a candidate cell for the LTM.

17. The non-transitory computer-readable medium of claim 15 , wherein the base station comprises a first base station distributed unit and a base station central unit.

18. The non-transitory computer-readable medium of claim 17 , wherein the first base station distributed unit is a serving base station distributed unit of the wireless device and a second base station distributed unit is a candidate base station distributed unit for the LTM of the wireless device.

19. The non-transitory computer-readable medium of claim 15 , wherein transmitting the random access preamble comprises transmitting the random access preamble via a resource.

20. The wireless device of claim 12 , wherein the resource comprises a physical random access channel (PRACH) resource and/or sounding reference signal (SRS) resource.

Assignments (1)

Continuity (3)

References Cited (139)