Granted Patent B2

US 12,587,913 · App. 17/639,859 · Granted Mar 24, 2026

Inventors: Hongsuk Kim (Seoul, KR); Sunghoon Jung (Seoul, KR); Sangwon Kim (Seoul, KR)

Assignee: LG Electronics Inc.

H04W36/0058H04W36/00692

Abstract

Claims (60)

1 . A method comprising:

receiving, from a network, i) a configuration of a master cell group (MCG) and ii) a configuration of a secondary cell group (SCG) including a primary secondary cell (PSCell);

receiving, from the network, a first reconfiguration message for a conditional change of the PSCell,

wherein the first reconfiguration message includes a candidate target cell configuration and an execution condition for the conditional change of the PSCell,

wherein the execution condition is associated with a measurement identity (ID);

evaluating the conditional change of the PSCell for the measurement ID indicated in the execution condition;

upon detecting a failure for the SCG while evaluating the conditional change of the PSCell, initiating an SCG failure information procedure;

upon initiating the SCG failure information procedure:

i) suspending SCG transmissions for all signaling radio bearers (SRBs) and data radio bearers (DRBs);

ii) stopping evaluation of the conditional change of the PSCell; and

iii) initiating transmission of an SCG failure information message to the network,

wherein the SCG failure information message includes available measurement results;

receiving a second reconfiguration message from the network;

resuming the SCG transmission for all radio bearers based on the second reconfiguration message; and

evaluating the conditional change of the PSCell.

2 . The method of claim 1 , wherein the measurement ID is associated with a measurement configuration including at least one of a measurement object and/or a report configuration.

3 . The method of claim 1 , wherein the execution conditions is evaluated by performing measurement on a target cells corresponding to the candidate target cell configuration.

4 . The method of claim 1 , further comprising autonomously removing all measurement IDs associated with the first reconfiguration message.

5 . The method of claim 1 , further comprising changing a triggering type of all measurement IDs associated with the first reconfiguration message from triggering the conditional change of the PSCell to a measurement reporting.

6 . The method of claim 1 , wherein purpose information for the execution condition is received from the network, and

wherein the purpose information informs that the candidate target cell configuration is for the conditional change of the PSCell or the conditional addition of the PSCell.

7 . The method of claim 1 ,

wherein the second reconfiguration message is for resolving the failure for the SCG and includes an updated measurement configuration.

8 . The method of claim 1 , wherein the failure on the SCG includes at least one of a radio link failure (RLF) on the SCG, a configuration failure on the SCG and/or an expiry of a validity timer.

9 . The method of claim 1 , wherein the method is performed by a wireless device in communication with at least one of a mobile device, a network, and/or autonomous vehicles other than the wireless device.

10 . A wireless device comprising:

at least one transceiver;

at least one processor; and

at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, cause the wireless device to perform operations comprising:

receiving, from a network, i) a configuration of a master cell group (MCG) and ii) a configuration of a secondary cell group (SCG) including a primary secondary cell (PSCell);

receiving, from the network, a first reconfiguration message for a conditional change of the PSCell,

wherein the first reconfiguration message includes a candidate target cell configuration and an execution condition for the conditional change of the PSCell,

wherein the execution condition is associated with a measurement identity (ID);

evaluating the conditional change of the PSCell for the measurement ID indicated in the execution condition;

upon detecting a failure for the SCG while evaluating the conditional change of the PSCell, initiating an SCG failure information procedure;

upon initiating the SCG failure information procedure:

i) suspending SCG transmissions for all signaling radio bearers (SRBs) and data radio bearers (DRBs);

ii) stopping evaluation of the conditional change of the PSCell; and

iii) initiating transmission of an SCG failure information message to the network,

wherein the SCG failure information message includes available measurement results;

receiving a second reconfiguration message from the network;

resuming the SCG transmission for all radio bearers based on the second reconfiguration message; and

evaluating the conditional change of the PSCell.

11 . A processing apparatus comprising:

at least one processor that is integrated with a user equipment (UE); and

at least one computer memory, comprising processor-executable instructions stored thereon that are configured to cause the at least one processor to perform operations comprising:

obtaining i) a configuration of a master cell group (MCG) and ii) a configuration of a secondary cell group (SCG) including a primary secondary cell (PSCell);

obtaining a first reconfiguration message for a conditional change of the PSCell,

wherein the first reconfiguration message includes a candidate target cell configuration and an execution condition for the conditional change of the PSCell,

wherein the execution condition is associated with a measurement identity (ID);

evaluating the conditional change of the PSCell for the measurement ID indicated in the execution condition;

upon detecting a failure for the SCG while evaluating the conditional change of the PSCell, initiating an SCG failure information procedure;

upon initiating the SCG failure information procedure:

i) suspending SCG transmissions for all signaling radio bearers (SRBs) and data radio bearers (DRBs); and

ii) stopping evaluation of the conditional change of the PSCell; and

iii) controlling transmission of an SCG failure information message to the network,

wherein the SCG failure information message includes available measurement results;

receiving a second reconfiguration message from the network;

resuming the SCG transmission for all radio bearers based on the second reconfiguration message; and

evaluating the conditional change of the PSCell.

Assignments (1)

Continuity (2)

References Cited (28)