METHOD, USER EQUIPMENT, BASE STATION AND SYSTEM FOR DETERMINING COMPONENT CARRIER SCHEDULED IN CROSS-CARRIER SCHEDULING

摘要

A method, user equipment, base station and system for determining a component carrier scheduled in cross-carrier scheduling. The method for determining the scheduled component carrier includes: a user equipment (UE) detects scheduling information sent by a base station in a first dedicated searching space corresponding to a scheduling component carrier, the first dedicated searching space includes at least one candidate physical downlink control channel (PDCCH) (101); detecting at least one candidate physical downlink control channel (PDCCH) to obtain a current physical downlink control channel (PDCCH) which belongs to the user equipment (UE) (102); determining a scheduled component carrier corresponding to the current physical downlink control channel (PDCCH) according to the location of the current physical downlink control channel (PDCCH) and the carried carrier indicator field (CIF) value thereof (103). By using this method, user equipment, base station and system, it can be realized in a multi-carrier wireless communication system that more other component carriers could be scheduled by one component carrier, meanwhile, even scheduling more component carriers need not to be realized, due to the 3 bits of the carrier indicator filed do not need to be all used, there would be a free bit in the carrier indicator field to indicate other control information, and further system resources would be saved.