Timing advance for mobility

Patent metadata

Field	Value
Publication number	US-12501324-B2
Application number	US-202418899474-A
Country	US
Kind code	B2
Filing date	Sep 27, 2024
Priority date	Sep 27, 2023
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A method can include transmitting, by a wireless device, a capability message comprising a field indicating a time gap of the wireless device to complete a procedure of layer 1 or layer 2 triggered mobility (LTM). The method can also include receiving, in a time interval, a medium access control control element (MAC CE) indicating cell switch to a candidate cell of LTM. The method can further include transmitting, via the candidate cell and a time resource, an uplink transmission, wherein the time resource is after the time gap plus an offset from the time interval.

First claim

What is claimed is:

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 at least to perform:
transmitting a capability message comprising a field indicating a time gap of the wireless device to complete a procedure of layer 1 or layer 2 triggered mobility (LTM);
receiving radio resource control (RRC) configuration parameters comprising one or more configurations of one or more candidate cells for LTM, wherein each of the one or more configurations comprise a configured grant indicating a time resource for uplink transmissions via a candidate cell of the one or more candidate cells;
receiving, in a time interval, a medium access control control element (MAC CE) indicating cell switch to the candidate cell; and
transmitting, via the candidate cell and the time resource, an uplink transmission, wherein the time resource is after the time gap plus an offset from the time interval.

2 . The wireless device of claim 1 , wherein at least one of:
the wireless device indicates the offset via the capability message; and the offset is preconfigured to the wireless device.

3 . The wireless device of claim 1 , wherein the uplink transmission is via physical uplink shared channel (PUSCH).

4 . The wireless device of claim 1 , wherein the offset is a preconfigured offset.

5 . The wireless device of claim 2 , wherein the RRC message indicates the offset.

6 . The wireless device of claim 1 , wherein the MAC CE is an LTM cell switch command MAC CE.

7 . The wireless device of claim 1 , wherein the MAC CE initiates the procedure.

8 . The wireless device of claim 1 , wherein the MAC CE indicates the procedure.

9 . The wireless device of claim 2 , wherein the MAC CE indicates a configuration of the one or more configurations.

10 . The wireless device of claim 9 , wherein the configuration is of the candidate cell.

11 . The wireless device of claim 10 , wherein the MAC CE indicates cell switch to the candidate cell based on indicating the configuration.

12 . The wireless device of claim 11 , wherein the uplink transmission comprises an RRC reconfiguration complete message.

13 . The wireless device of claim 1 , further comprising receiving a downlink control information (DCI).

14 . The wireless device of claim 13 , wherein the DCI comprises a dynamic grant.

15 . The wireless device of claim 13 , wherein the DCI indicates a dynamic grant.

16 . The wireless device of claim 13 , wherein the DCI indicates the uplink transmission.

17 . The wireless device of claim 13 , wherein the DCI indicates the time resource.

18 . A method comprising:
transmitting, by a wireless device, a capability message comprising a field indicating a time gap of the wireless device to complete a procedure of layer 1 or layer 2 triggered mobility (LTM); receiving radio resource control (RRC) configuration parameters comprising one or more configurations of one or more candidate cells for LTM, wherein each of the one or more configurations comprise a configured grant indicating a time resource for uplink transmissions via a candidate cell of the one or more candidate cells; receiving, in a time interval, a medium access control control element (MAC CE) indicating cell switch to the candidate cell; and transmitting, via the candidate cell and the time resource, an uplink transmission, wherein the time resource is after the time gap plus an offset from the time interval.

19 . The method of claim 18 , wherein at least one of:
the wireless device indicates the offset via the capability message; and the offset is preconfigured to the wireless device.

20 . 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 perform:
transmitting a capability message comprising a field indicating a time gap of the wireless device to complete a procedure of layer 1 or layer 2 triggered mobility (LTM); receiving radio resource control (RRC) configuration parameters comprising one or more configurations of one or more candidate cells for LTM, wherein each of the one or more configurations comprise a configured grant indicating a time resource for uplink transmissions via a candidate cell of the one or more candidate cells; receiving, in a time interval, a medium access control control element (MAC CE) indicating cell switch to the candidate cell; and transmitting, via the candidate cell and the time resource, an uplink transmission, wherein the time resource is after the time gap plus an offset from the time interval.

Assignees

• Ofinno Llc

Inventors

• Prasad Gautham
• Cirik Ali Cagatay
• Dinan Esmael Hejazi
• Zhou Hua
• Jeon Hyoungsuk
• Kim Taehun
• Park Kyungmin
• Keating Ryan
• Khoshkholgh Dashtaki Mohammad Ghadir
• Abdul Latheef Fasil

Classifications

• H04W36/362

  Conditional handover · CPC title

• H04W36/0072 Primary

  of resource information of target access point · CPC title

• H04W36/249

  according to timing information · CPC title

• H04W36/08 Primary

  Reselecting an access point · CPC title