Patent ID: 9191093
Filing Date: 2015-11-17
Classification: H04B

Abstract:
1. A method of wireless communication comprising: at a base station comprising K>1 antennas, transmitting K distinct pilot signals from the K antennas, where each of the K pilot signals is transmitted from a distinct corresponding antenna of the K antennas; at the base station, receiving feedback from mobile devices that received the transmitted K distinct pilot signals from the K antennas, wherein the feedback comprises an indication from each of the mobile devices of a strong pilot signal transmitted from one of the K antennas that has a received SNR value greater than a predetermined SNR threshold value and a weak pilot signal transmitted from another one of the K antennas that has a received INR value less than a predetermined INR threshold value, wherein the strong pilot signal and the weak pilot signal are two distinct signals received from the K distinct pilot signals transmitted from the K antennas; wherein the feedback comprises an indication of one strong pilot signal transmitted from one of the K antennas and up to K−1 weak pilot signals transmitted from up to K−1 of the K antennas, wherein the feedback comprises an indication of at least L weak pilot signals transmitted from L of the K antennas, where 1<L<K; at the base station, assigning each antenna in a subset of the K antennas to each mobile device in a corresponding assigned subset of the mobile devices in a one-antenna-to-one-mobile-device correspondence, wherein the assigning comprises using the indication from each of the mobile devices of a strong pilot signal and a weak pilot signal; and at the base station, transmitting distinct corresponding data streams to the corresponding assigned subset of the mobile devices using the assigned subset of the K antennas, wherein distinct data streams are transmitted at the same time and frequency using distinct antennas to implement multiuser diversity.