Power control on a deactivated component carrier
AssigneeQUALCOMM Incorporated
InventorsPeter Gaal, Aleksandar Damnjanovic, Wanshi Chen, Juan Montojo, Jelena M. Damnjanovic
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Abstract
A wireless communication system implementing Carrier Aggregation (CA) allows activation and deactivation of certain component carriers. Transmit power on an uplink component carrier being reactivated may be controlled by predetermining appropriate power control parameters to be used upon reactivation. The predetermined power control parameters may depend on a last known power control state of the deactivated component carrier or may be reset to apply an initial low power state.
Claims40
A method of wireless communication by a multi-carrier user equipment (UE), comprising:
- determining at least one power control parameter for a component carrier configured for the UE when the component carrier is in an activated state;
- deactivating the component carrier after determining the at least one power control parameter;
- selecting a most recent power control parameter value for the deactivated component carrier from the at least one power control parameter, in response to a reactivation command for the deactivated component carrier;
- applying the selected power control parameter value to establish a power control adjustment state of the UE;
- and
- reactivating the deactivated component carrier in the established power control adjustment state.
A multi-carrier user equipment (UE), comprising:
- means for determining at least one power control parameter for a component carrier configured for the UE when the component carrier is in an activated state;
- means for deactivating the component carrier after determining the at least one power control parameter;
- means for selecting a most recent power control parameter value for the deactivated component carrier from the at least one power control parameter, in response to a reactivation command for the deactivated component carrier;
- means for applying the selected power control parameter value to establish a power control adjustment state of the UE;
- and
- means for reactivating the deactivated component carrier in the established power control adjustment state.
A computer program product for a multicarrier user equipment (UE), comprising:
- a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising:
- program code to determine at least one power control parameter for a component carrier configured for the UE when the component carrier is in an activated state;
- program code to deactivate the component carrier after determining the at least one power control parameter;
- program code to select a most recent power control parameter value for the deactivated component carrier from the at least one power control parameter, in response to a reactivation command for the deactivated component carrier;
- program code to apply the selected power control parameter value to establish a power control adjustment state of the UE;
- and
- program code to reactivate the deactivated component carrier in the established power control adjustment state.
A multicarrier user equipment (UE), comprising
- a memory;
- at least one processor coupled to the memory and configured:
- to determine at least one power control parameter for a component carrier configured for the UE when the component carrier is in an activated state;
- to deactivate the component carrier after determining the at least one power control parameter;
- to select a most recent power control parameter value for the deactivated component carrier from the at least one power control parameter, in response to a reactivation command for the deactivated component carrier;
- to apply the selected power control parameter value to establish a power control adjustment state of the UE;
- and
- to reactivate the deactivated component carrier in the established power control adjustment state.
Dependencies are inferred from the claim text.