Patent ID: 9363002
Filing Date: 2016-06-07
CPC Classification: H04B,H04L

Claim Text:
1. A method of providing wireless transmissions between a processor-controlled base station and a plurality of terminals via a communication channel established in a wireless network, wherein the base station includes a plurality of transmit antennas, the method comprising steps of: using the processor, receiving respective terminal-specific Channel State Information (CSI) feedback from each of a first terminal and a second terminal in the plurality of terminals, wherein each terminal-specific CSI feedback corresponds to all antenna element-specific transmissions from the base station to either of the first and the second terminals, wherein the antenna element-specific transmissions temporally precede the terminal-specific CSI feedback; using the processor, determining a predicted communication channel based on a pre-determined number of time-wise consecutive channel estimates, wherein the predicted communication channel represents a prediction of the communication channel based on partially stale CSI feedback, wherein the pre-determined number of time-wise consecutive channel estimates are generated by repeating the reception of the CSI feedback from the first and the second terminals and determination of channel estimate for a pre-determined number of temporally consecutive base station transmissions, wherein the pre-determined number of time-wise consecutive channel estimates represents a pre-determined number of time-wise correlated CSI feedbacks; using the processor, shaping at least one terminal-specific transmission intended for the corresponding one or both of the first and the second terminals based on the predicted communication channel; and using the processor, providing a common transmission intended for both of the first and the second terminals, wherein the providing step includes: using the predicted communication channel to determine a precoder matrix; determining effective antenna element-specific channel parameters based on past precoder matrices and CSI feedback from each of the first and the second terminals; and formulating a combined symbol based on the effective antenna element-specific channel parameters and information symbols included in an earlier terminal-specific transmission to at least one of the first and the second terminals.