Patent ID: 8611905

Claim:
In a serving BS of a collaborative multiple-input multiple-output based wireless telecommunication network, a method of controlling the serving BS to coordinate with at least one coordinating BS for downlink data communication with a MS, the method comprising: sending a measurement instruction to the MS, wherein the measurement instruction comprises determining information based upon which channel related information is determined for each downlink channel between the serving BS and the MS, and between the at least one coordinating BS and the MS; receiving feedback information from the MS in response to the measurement instruction; obtaining downlink signal precoding information between the serving BS and the MS, and at least one downlink signal precoding information between the at least one coordinating BS and the MS based upon the feedback information; sending at least one coordinating request message to the at least one coordinating BS, wherein the coordinating request message comprises the obtained downlink signal precoding information between the coordinating BS and the MS; and transmitting, coordinately with the at least one coordinating BS, downlink signals precoded according to the downlink signal precoding information to the MS.