Patent ID: 8812675

Claim:
A method, executed by a serving base station of a wireless communication system, for performing downlink multi-point cooperation, the method comprising: receiving from a downlink cooperation terminal a channel gain value, a propagation delay value, and a delay spread value that are calculated by the downlink cooperation terminal with respect to the serving base station and each of a plurality of neighboring base stations; determining a length of an extended cyclic prefix for each neighboring base station based on the propagation delay values of the serving base station and the neighboring base station and the delay spread value of the neighboring base station; selecting one of the neighboring base stations as a cooperation base station, the selected base station having a multi-point cooperation gain that exceeds a measure of increased overhead to be incurred by use of the extended cyclic prefix relative to using a non-extended cyclic prefix; and transmitting, in cooperation with the cooperation base station, data to the downlink cooperation terminal.