Patent ID: 9178670
Filing Date: 2015-11-03
Classification: H04L,H04W

Abstract:
1. A method for transmitting, by a base station, downlink control information to a user equipment using a plurality of carriers in a wireless communication system, the method comprises: transmitting a first physical downlink control channel (PDCCH) carrying first control information, which is for transmission of a first physical downlink shared channel (PDSCH) and includes a carrier indication field set to indicate a first carrier among the plurality of carriers, and a second PDCCH carrying second control information, which is for transmission of a second PDSCH and includes a carrier indication field set to indicate a second carrier among the plurality of carriers, through the first carrier to the user equipment in a subframe n; transmitting the first PDSCH carrying first downlink data through the first carrier based on the first control information to the user equipment in the subframe n; and transmitting the second PDSCH carrying second downlink data through the second carrier based on the second control information to the user equipment in a subframe n+k when the second carrier is different from the first carrier and carries no PDCCH, wherein k is equal to 1or 2, and wherein the subframe n and the subframe n+k are downlink subframes.