Patent ID: 9072058
Filing Date: 2015-06-30
Classification: H04B,H04W

Abstract:
1. A method of communication between a wireless base station and a population of one or more terminals, comprising: in each of a plurality of iterations, transmitting a block of forward-link data from an array of multiple base station antennas to the population of one or more terminals; in each of said iterations, updating a forward-link power level based on a convergence algorithm for each terminal based on SINR feedback data returned by the population of one or more terminals in response to the forward-link data transmitted in a previous iteration, wherein the forward-link power level substantially converges toward an asymptotic value as a result of the plurality of iterations; during said plurality of iterations, periodically updating a set of beamforming coefficients based on channel state information (CSI) obtained from reverse-link pilot signals, wherein the CSI is obtained once per a CSI-update period long enough that the CSI obtained in each period is decorrelated from the CSI obtained in a previous period; and precoding each data block prior to transmission with most recently updated beamforming coefficients, wherein: each data block is transmitted at most recently updated forward-link power levels; and the power levels are updated using local information.