Back to results
US 12,587,913 B2Granted
SCG failure handling with conditional PScell configuration
AssigneeLG Electronics Inc.
InventorsHongsuk Kim, Sunghoon Jung, Sangwon Kim
Life of this patent
Estimating the term…
Abstract
A method and apparatus for a secondary cell group (SCG) failure handling with a conditional primary secondary cell (PSCell) configuration in a wireless communication system is provided. A wireless device evaluates a conditional change of PSCell based on a mobility command for the conditional change of the PSCell. Upon detecting a failure on a secondary cell group (SCG), the wireless device stops evaluating the conditional change of the PSCell, and transmits, to the network, information on the failure on the SCG.
Claims11
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.
13 more elements
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.
17 more elements
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.
17 more elements
Dependencies are inferred from the claim text.