Activation of secondary cell group configuration upon master cell group failure detection
AssigneeLG Electronics Inc.
InventorsYoungdae Lee, Sunghoon Jung, Taehun Kim
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Abstract
A method and apparatus for activation of secondary cell group (SCG) configuration upon master cell group (MCG) failure detection in a wireless communication system is provided. A wireless device delays activation of a SCG. When the wireless device detects a failure on a master cell group (MCG) while delaying the activation of the SCG, the wireless device activates the SCG, and performs a random access procedure on a cell of the SCG.
Claims13
A method performed by a wireless device adapted to operate in a wireless communication system, the method comprising:
- receiving, from a network, a configuration of a secondary cell group (SCG),
- wherein the wireless device is configured with a master cell group (MCG) and the SCG in dual connectivity,
- wherein the MCG comprises a primary cell (PCell) and optionally one or more secondary cells (SCells),
- wherein the SCG comprises a primary SCell (PSCell) and optionally one or more SCells,
- wherein the configuration of the SCG includes a suspension indication;
- based on the suspension indication, storing the configuration of the SCG but delaying activation of the SCG;
- upon detecting a failure on the MCG, based on the activation of the SCG having been delayed:
- (i) activating the SCG based on the configuration of the SCG;
- and
- (ii) performing a random access procedure on a cell of the SCG,
- wherein the random access procedure includes informing information related to detection of the failure on the MCG, and
- wherein the information related to detection of the failure on the MCG is carried from a secondary node (SN) controlling the SCG to a master node (MN) controlling the MCG.
A wireless device adapted to operate in a wireless communication system, the 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, perform operations comprising:
- receiving, from a network, a configuration of a secondary cell group (SCG),
- wherein the wireless device is configured with a master cell group (MCG) and the SCG in dual connectivity,
- wherein the MCG comprises a primary cell (PCell) and optionally one or more secondary cells (SCells),
- wherein the SCG comprises a primary SCell (PSCell) and optionally one or more SCells,
- wherein the configuration of the SCG includes a suspension indication;
- based on the suspension indication, storing the configuration of the SCG but delaying activation of the SCG;
- upon detecting a failure on the MCG, based on the activation of the SCG having been delayed:
- (i) activating the SCG based on the configuration of the SCG;
- and
- (ii) performing a random access procedure on a cell of the SCG,
- wherein the random access procedure includes informing information related to detection of the failure on the MCG, and
- wherein the information related to detection of the failure on the MCG is carried from a secondary node (SN) controlling the SCG to a master node (MN) controlling the MCG.
A processing apparatus adapted to control a wireless device in a wireless communication system, the processing apparatus comprising:
- at least one memory;
- at least processor, operably coupled to the at least one memory,
- wherein the at least one processor is configured to:
- obtain a configuration of a secondary cell group (SCG),
- wherein the wireless device is configured with a master cell group (MCG) and the SCG in dual connectivity,
- wherein the MCG comprises a primary cell (PCell) and optionally one or more secondary cells (SCells),
- wherein the SCG comprises a primary SCell (PSCell) and optionally one or more SCells,
- wherein the configuration of the SCG includes a suspension indication;
- based on the suspension indication, store the configuration of the SCG but delay activation of the SCG;
- upon detecting a failure on the MCG, based on the activation of the SCG having been delayed:
- activate the SCG based on the configuration of the SCG;
- and
- perform a random access procedure on a cell of the SCG,
- wherein the random access procedure includes informing information related to detection of the failure on the MCG, and
- wherein the information related to detection of the failure on the MCG is carried from a secondary node (SN) controlling the SCG to a master node (MN) controlling the MCG.
Dependencies are inferred from the claim text.