Method for determining ECCE search space of EPDCCH in case of cross carrier scheduling, and apparatus therefor

摘要

The present invention provides a method and apparatus for determining an ECCE user equipment specific search space of EPDCCH for cross carrier scheduling. According to one embodiment of the present invention, the method is to determine the distance between search space candidates at each aggregation level according to at least the total number of carriers NCI and carrier indicator nCI that can be scheduled simultaneously, Search at each aggregation level in the allocated ECCE according to which the carrier indicator nCI indicates each of the NCI carriers that can be scheduled at the same time, and at least according to the determined distance Determining the position of the candidate space. In accordance with the present invention, search space candidates at each aggregation level can be uniformly located in the allocated ECCE in a cross-carrier scheduling situation, which differs for a single user equipment. Control candidates over a certain carrier corresponding to data over a plurality of carriers can use multiple candidates that are spaced apart.