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NODE AND METHOD FOR GENERATING BEAMFORMED FOR DOWNLINK COMMUNICATIONS

  • US 20130242773A1
  • Filed: 09/13/2012
  • Published: 09/19/2013
  • Est. Priority Date: 03/15/2012
  • Status: Active Grant
First Claim
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1. A method, in an eNodeB, for generating downlink communications in a multiple antenna system, the eNodeB being comprised in a wireless communications network, the method comprising:

  • transmitting, to a plurality of user equipments, a plurality of reference signals, each reference signal being beamformed into a distinct direction within at least one correlated domain of the multiple antenna system;

    receiving, from a specific user equipment, at least one Channel State Information, CSI, report for at least a subset of said plurality of reference signals;

    determining at least one primary reference signal among said plurality of reference signals based on the received at least one CSI report; and

    generating downlink communication signals for antenna element(s) and/or sub-elements of the multiple antenna system, wherein the downlink communication signals are beamformed into a transmitting direction that aligns most closely with a beamforming direction of the at least one primary reference signal, as compared to any other beamforming direction of reference signals comprised in the first set of reference signals.

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