Method and apparatus for mobility in dual connectivity in wireless communication system

Patent metadata

Field	Value
Publication number	US-2024056917-A1
Application number	US-202017769069-A
Country	US
Kind code	A1
Filing date	Oct 14, 2020
Priority date	Oct 14, 2019
Publication date	Feb 15, 2024
Grant date	—

Abstract

The present disclosure relates to mobility in dual connectivity (DC) in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a network, a plurality of conditional mobility commands, each of the plurality of conditional mobility commands comprising a respective trigger type; identifying, among the plurality of conditional mobility commands, one or more conditional mobility commands comprising a trigger type corresponding to a secondary cell group (SCG) configuration status of the wireless device; and performing an evaluation of one or more target cells related to the one or more conditional mobility commands.

First claim

1 . A method performed by a wireless device in a wireless communication system, the method comprising:
receiving, from a network, a plurality of conditional mobility commands, each of the plurality of conditional mobility commands comprising a respective trigger type; identifying, among the plurality of conditional mobility commands, one or more conditional mobility commands comprising a trigger type corresponding to a secondary cell group (SCG) configuration status of the wireless device; and performing an evaluation of one or more target cells related to the one or more conditional mobility commands.

2 . The method of claim 1 , wherein the SCG configuration status of the wireless device indicates one of:
a first status in which an SCG is configured for the wireless device; and a second status in which an SCG is not configured for the wireless device.

3 . The method of claim 2 , wherein the trigger type indicates one of:
a first type that a purpose of the evaluation is for a primary secondary cell (PSCell) change; a second type that a purpose of the evaluation is for a PSCell addition; and a third type that a purpose of the evaluation is for at least one of a PSCell change or a PSCell addition, wherein the trigger type corresponding to the SCG configuration status of the wireless device is the first type or the third type based on that the SCG configuration status of the wireless device is the first status, and wherein the trigger type corresponding to the SCG configuration status of the wireless device is the second type or the third type based on that the SCG configuration status of the wireless device is the second status.

4 . The method of claim 3 , wherein the identifying the one or more conditional mobility commands comprises:
identifying, among the plurality of conditional mobility commands, the one or more conditional mobility commands comprising the trigger type set to the first type or the third type based on that the SCG configuration status of the wireless device is the first status.

5 . The method of claim 3 , wherein the identifying the one or more conditional mobility commands comprises:
identifying, among the plurality of conditional mobility commands, the one or more conditional mobility commands comprising the trigger type set to the second type or the third type based on that the SCG configuration status of the wireless device is the second status.

6 . The method of claim 3 , wherein the trigger type indicates one of the first type and the second type,
wherein the trigger type corresponding to the SCG configuration status of the wireless device is the first type based on that the SCG configuration status of the wireless device is the first status, and wherein the trigger type corresponding to the SCG configuration status of the wireless device is the second type based on that the SCG configuration status of the wireless device is the second status.

7 . The method of claim 6 , wherein the identifying the one or more conditional mobility commands comprises:
identifying, among the plurality of conditional mobility commands, the one or more conditional mobility commands comprising the trigger type set to the first type based on that the SCG configuration status of the wireless device is the first status.

8 . The method of claim 6 , wherein the identifying the one or more conditional mobility commands comprises:
identifying, among the plurality of conditional mobility commands, the one or more conditional mobility commands comprising the trigger type set to the second type based on that the SCG configuration status of the wireless device is the second status.

9 . The method of claim 1 , wherein each of the one or more conditional mobility commands comprises at least one of:
an identity (ID) of a corresponding conditional mobility command; a mobility condition for a respective target cell in the one or more target cells; a target cell configuration for the respective target cell; or the trigger type, wherein the mobility condition informs a measurement ID related to a measurement object for the respective target cell and a report configuration.

10 . The method of claim 9 , wherein the trigger type is included in the report configuration.

11 . The method of claim 9 , wherein the performing the evaluation comprises:
performing a measurement on the respective target cell on the measurement object related to the measurement ID.

12 . The method of claim 1 , further comprising:
identifying, among the plurality of conditional mobility commands, one or more other conditional mobility commands comprising a trigger type not corresponding to the SCG configuration of the wireless device; and removing one or more measurement identities (IDs) informed by a mobility condition in the one or more other conditional mobility commands.

13 . The method of claim 1 , wherein the wireless device is in communication with at least one of a user equipment, a network, or autonomous vehicles other than the wireless device.

14 . A wireless device configured to operate in a wireless communication system, the wireless device comprising:
a transceiver; at least one processor; and at least one memory operatively coupled to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising: controlling the transceiver to receive, from a network, a plurality of conditional mobility commands, each of the plurality of conditional mobility commands comprising a respective trigger type, identifying, among the plurality of conditional mobility commands, one or more conditional mobility commands comprising a trigger type corresponding to a secondary cell group (SCG) configuration status of the wireless device, and performing an evaluation of one or more target cells related to the one or more conditional mobility commands.

15 - 17 . (canceled)

18 . A computer-readable medium having recorded thereon a program that, when executed by at least one processor, perform operations comprising:
receiving, from a network, a plurality of conditional mobility commands, each of the plurality of conditional mobility commands comprising a respective trigger type; identifying, among the plurality of conditional mobility commands, one or more conditional mobility commands comprising a trigger type corresponding to a secondary cell group (SCG) configuration status of a wireless device; and performing an evaluation of one or more target cells related to the one or more conditional mobility commands.

Assignees

• Lg Electronics Inc

Inventors

• Kim Hongsuk
• Jung Sunghoon
• Lee Oanyong
• Hong Jongwoo

Classifications

• H04W36/362 Primary

  Conditional handover · CPC title

• H04W36/00835 Primary

  Determination of neighbour cell lists · CPC title

• H04W36/0058

  Transmission of hand-off measurement information, e.g. measurement reports · CPC title