MULTIUSER MULTIPOINT COOPERATIVE TRANSMISSION METHOD, AND CENTRAL PROCESSING UNIT THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a multiuser multipoint cooperative transmission method, and to provide a central processing unit therefor. SOLUTION: The central processing unit decides a semi-cooperative user group composed of user terminals which need to be fed back with instantaneous channel state information based on a varied value of a central value which is fed back from each user terminal, and then decides the user terminal which participates to the cooperative transmission based on the instantaneous channel state information fed back from the user terminal within the semi-cooperative user group. This invention can significantly reduce feedback overhead of instantaneous channel information because only the user terminals within the semi-cooperative user group need to feedback the instantaneous channel state information to the central processing unit. Calculation complexity when the central processing unit makes user scheduling can be reduced responding to it. COPYRIGHT: (C)2011,JPO&INPIT