Patent ID: 9565668
Date: 2017-02-07
CPC Classifications: H04L,H04W

Claim:
1. A method for supporting a carrier aggregation group in a wireless communication system supporting multiple carriers, the method performed by a wireless device and comprising: receiving a radio resource control (RRC) configuration message including a first parameter related to one or more serving cells from a macro cell and a second parameter related to one or more serving cells from a small cell; and configuring two or more carrier aggregation groups (CAGs) based on the first parameter and the second parameter, wherein a medium access control (MAC) main configuration is configured independently per each CAG of the two or more CAGs, wherein the MAC main configuration includes a CAG identification (ID) for the configuration of two or more CAGs, wherein a release, an addition or a modification of a secondary cell (SCell) in a first CAG of the two or more CAGs is applied in accordance with a first parameter related to a common SCell radio resource configuration and a second parameter related to a dedicated SCell radio resource configuration, wherein the first CAG of the two or more CAGs is a group of one or more serving cells employing carrier aggregation, wherein the RRC configuration message is used to modify an RRC connection between the wireless device and a eNodeB (eNB), and wherein a primary serving cell (PCell) for each CAG of the two or more CAGs is configured independently from each other.