Patent ID: 9055585
Filing Date: 2015-06-09
Classification: H04L,H04W

Abstract:
1. A method for a user equipment reporting to an eNodeB a power headroom in a mobile communication system using component carrier aggregation, wherein the method comprises the steps of: calculating by the user equipment one or both of a normal power headroom for a scheduled uplink component carrier and a virtual power headroom for a non-scheduled uplink component carrier, the virtual power headroom being calculated based on a pre-configured virtual uplink resource assignment for said non-scheduled uplink component carrier, transmitting by the user equipment to the eNodeB a report including, one of the normal power headroom and the virtual power headroom, and a flag indicating which one of the normal power headroom and the virtual power headroom is included in the report, receiving by the user equipment from the eNodeB uplink power control information, and controlling by the user equipment uplink power based on the received power control information.