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Collaborative beam forming of base transceiver stations for reducing interference in a wireless multi-cell network

  • US 7,519,366 B2
  • Filed: 03/23/2007
  • Issued: 04/14/2009
  • Est. Priority Date: 10/24/2006
  • Status: Active Grant
First Claim
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1. A method comprising:

  • detecting signal strength of downlink signals transmitted from a plurality of base transceiver stations and received at a mobile station;

    selecting a plurality of candidate serving base transceiver stations based on the detected signal strength;

    selecting a first group of serving base transceiver stations from the candidate serving base transceiver stations;

    transmitting signals containing information indicating the candidate serving base transceiver stations from the mobile station to current uplink serving base transceiver stations of the mobile station;

    forwarding the information indicating the candidate serving base transceiver stations from the current uplink serving base transceiver stations to a management server;

    at the management server, determining beam forming weight factors for the first group of serving base transceiver stations; and

    sending signals between the mobile station and the first group of serving base transceiver stations using beam forming techniques with the beam forming weight factors to reduce interference at the mobile station.

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