Patent ID: 9036549
Filing Date: 2015-05-19
Classification: H04L

Abstract:
1. A transmission method of a base station in a mobile communication system supporting carrier aggregation, comprising: activating a plurality of component carriers to be aggregated if a user equipment is in a multi-carrier mode; transmitting a first control signal and data using the plurality of component carriers to be activated if the user equipment is in the multi-carrier mode; deactivating the plurality of component carriers with one of the plurality of component carriers remaining activated if the multi-carrier mode is switched to a single carrier mode; transmitting a second control signal comprising an indicator indicating to switch the multi-carrier mode to the single carrier mode and data using the one of the plurality of component carriers remaining activated; activating the plurality of component carriers to be aggregated if the single-carrier mode is switched to the multi-carrier mode; and notifying, if the single carrier mode is switched to the multi-carrier mode, user equipment of switching to the multi-carrier mode.