Method of aiding uplink beamforming transmission

摘要

A method of aiding uplink transmission is disclosed. One method includes a base station downlink transmitting signals to at least a first terminal, the transmitted signals directed and conveying data to at least the first terminal. The method further includes a second terminal eavesdropping the transmitted signals, and measuring a signal quality. The second terminal estimates uplink channel information based on the measured signal quality, for aiding uplink transmission. Based at least in part on the estimated transmission channel, the second terminal transmits uplink signals to the base station.

主权项

1. A method of communication of an uplink signal from a second terminal to a base station, comprising:
eavesdropping, by the second terminal, on a beamformed wireless signal transmitted from the base station to a first terminal, wherein the eavesdropping comprises receiving the beamformed wireless signal over multiple receive antennas; measuring, by the second terminal, a joint signal quality indicator based on the beamformed wireless signal, wherein the joint signal quality indicator includes an estimate of a product of the beamformed wireless signal and a channel between the base station and the second terminal; estimating, by the second terminal, uplink channel information based on the joint signal quality indicator by performing a singular value decomposition on the estimate of the product of the beamformed wireless signal and the channel between the base station and the second terminal; and transmitting, by the second terminal, the uplink signal to the base station, wherein the uplink signal is based on the uplink channel information.