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Multi-beam MIMO time division duplex base station using subset of radios

  • US 8,928,528 B2
  • Filed: 08/27/2013
  • Issued: 01/06/2015
  • Est. Priority Date: 02/08/2013
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • a plurality of transmit and receive antennas covering one sector of a cellular communication base station;

    a multi-beam RF beamforming matrix connected to said transmit and receive antennas;

    a plurality of radio circuitries connected to said multi-beam RF beamforming matrix; and

    a baseband module connected to said radio circuitries,wherein the multi-beam RF beamforming matrix is configured to generate one sector beam and two or more directional co-frequency beams, wherein the sector beam operates over a different frequency than said directional co-frequency beams,wherein the baseband module assigns each user equipment (UE) to the sector beam or to at least one of said directional co-frequency beams based on a cross-talk parameter at the respective UE,wherein a number M denotes the number said directional beams and a number N denotes the number of said radio circuitries and wherein M>

    N.

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