Patent ID: 9565572
Date: 2017-02-07
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method for operating a serving cell at a user equipment (UE) in a wireless communication system, the method comprising: receiving group information indicating at least one secondary cell (SCell) group via a higher layer signaling, wherein each of the at least one SCell group includes a plurality of SCells corresponding to a same frequency band; configuring an activated first SCell of a first SCell group among the at least one SCell group as the serving cell of the UE; receiving a serving cell configuration message from a network to deactivate the first SCell and activate a second SCell of the first SCell group, wherein the serving cell configuration message is included in a medium access control (MAC) control element (CE); and configuring the activated second SCell as the serving cell of the UE, wherein two or more SCells in a same SCell group of the at east one SCell group are not allowed to be activated simultaneously.