METHOD AND APPARATUS FOR DETERMINING SEARCH SPACES AND SEARCH POSITIONS IN A COMMUNICATION SYSTEM WHICH OPERATES A PLURALITY OF COMPONENT CARRIERS, AND METHOD AND APPARATUS FOR DECODING CONTROL INFORMATION USING SAME

摘要

The present description relates to a method and apparatus for allocating a control information resource in a wireless communication system which operates a plurality of component carriers, and to a method and apparatus for decoding control information. According to one embodiment of the present invention, control information on the plurality of component carriers is realigned in accordance with the order of decoding, and resources are allocated, thereby reducing control information decoding complexity at the receiving end and enabling an estimation of the amount of computation for decoding. In addition, according to one embodiment of the present invention, a method for determining a search space, which is a set of physical downlink control channel (PDCCH) candidates to be monitored by a terminal in a communication system using a plurality of component carriers, involves determining, as the search space, an extended search candidate formed by the value obtained by multiplying the number of one or more search candidates applied to a single carrier component and carrier indication information on the component carriers of user equipment, in the event the user equipment uses a plurality of component carriers.