METHOD FOR APERIODIC FEEDBACK OF CHANNEL STATE INFORMATION IN WIRELESS ACCESS SYSTEM SUPPORTING MULTI-CARRIER AGGREGATION Russian patent published in 2015 - IPC H04J11/00 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to a wireless access system supporting multi-carrier aggregation (CA). The invention discloses a method for aperiodic feedback of channel state information (CSI) in a wireless access system supporting CA, and according a version of the present invention, comprises steps of: receiving a first message including an aperiodic CSI request field and uplink grant from a base station; receiving a second message including bitmap information indicating a downlink component carrier (DL CC) subjected to CSI measurement from the base station; measuring the CSI in consideration of at least one of the aperiodic CSI request, uplink grant, and bitmap information; and transmitting the measured CSI to the base station through a physical uplink shared channel (PUSCH).

EFFECT: invention enables to decide the serving cell for which feedback is to be performed.

14 cl, 5 tbl, 12 dwg