Patent ID: 8855696
Filing Date: 2014-10-07
Classification: H04B,H04W

Abstract:
1. A data transmission method performed by a base station (BS) and based on multi-cell cooperation, the method comprising: receiving at least one channel quality indicator (CQI) from each mobile station (MS) in a cell; selecting a plurality of candidate MSs on the basis of the received CQI; receiving from each candidate MS a serving precoding matrix index (PMI) for a serving BS, a neighboring PMI for a neighboring BS, and a CQI obtained from the serving PMI and the neighboring PMI; selecting a transmission MS and a transmission PMI to be used for the data transmission on the basis of the serving PMI, neighboring PMI, and CQI received from each candidate MS; and transmitting data to the transmission MS by using a precoding matrix indicated by the transmission PMI.