Patent ID: 8948293
Filing Date: 2015-02-03
Classification: H04B,H04W

Abstract:
1. A method of wireless communication between a base station having a plurality of geographically separated antennas and a plurality of user equipments, comprising the steps of: selecting at the base station a subset of at least one of the geographically separated antennas for each of the plurality of user equipments, said selecting occurring semi-statically for user equipment having a Doppler shift indicating a rate of motion is less than a predetermined amount and dynamically for user equipment having a Doppler shift indicating the rate of motion is greater than said predetermined amount; forming at least one layer of data stream for each of the plurality of user equipments, each of the data streams including modulated symbols; precoding the at least one layer of data stream for each of the plurality of user equipments via multiplication with an NT-by-N precoding matrix where N is the number of said layers and NT is the number of transmit antenna elements; and transmitting the precoded layers of data streams to each of the plurality of user equipments via the selected subsets of geographically separated antennas.