Patent ID: 8934426
Filing Date: 2015-01-13
Classification: H04B,H04L,H04W

Abstract:
1. A base station in a wireless communication network for communicating wirelessly with a plurality of mobile stations, the base station supporting Multiple-User Multiple-Input and Multiple-Output (MU-MIMO) communication comprising: a transmitter; a receiver; a plurality of antennas; knowledge base circuitry that maintains a knowledge base of correlation of geometry of each mobile station and a precoding scheme of each other mobile station to differences in communication channel quality between the base station and each mobile station for single-user MIMO operation versus Multiple-User MIMO operation; determining circuitry that determines a precoding scheme selected by each mobile station for single-user MIMO operation, single-user MIMO channel quality data for each mobile station, and geometry data for each mobile station, wherein the determining circuitry further determines a pair of two or more mobile stations to share a first communication resource unit while the two or more mobile stations operate in MU-MIMO operation, the first communication resource unit including orthogonal frequency-division multiplexing (OFDM) sub-carrier and timeslot data; and predicting circuitry that, responsive to switching a first mobile station of the pair from single-user MIMO operation to Multiple-User MIMO operation, uses the knowledge base to map the precoding scheme data and the geometry data corresponding to each of the mobile stations sharing the first communication resource unit to a predicted channel quality degradation for each of the first mobile station and the second mobile station.