Patent ID: 9014141
Filing Date: 2015-04-21
Classification: H04L,H04W

Abstract:
1. A method of changing a component performed by a target base station, the method comprising: receiving a measurement result obtained by measuring a radio channel quality with respect to component carriers; determining a handover procedure for changing of a primary component carrier based on the measurement result, and performing a relevant control procedure; transmitting, to a user equipment, information associated with a component carrier to be configured as a new primary component carrier, and commanding a handover execution for changing of the primary component carrier; and exchanging control information with the user equipment to perform handover with the user equipment using the new primary component carrier, wherein one or more secondary component carriers are in a deactivated state during the handover execution; and transmitting an activation control message requesting the user equipment to activate at least one of the one or more secondary component carriers.