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Multi-beam antenna system for high speed data

  • US 6,804,521 B2
  • Filed: 01/18/2001
  • Issued: 10/12/2004
  • Est. Priority Date: 01/18/2000
  • Status: Expired due to Term
First Claim
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1. In a cellular wireless communication system, a method of transmitting data from a base station to a plurality of user terminals within a sector serviced by the base station, the method comprising:

  • dividing the sector geographically into a plurality of user-group areas, wherein each user-group area is serviced via a respective port of a beam forming antenna of the base station;

    for each user-group area, transmitting a uniquely identifiable pilot signal via a respective port of the beam forming antenna of the base station;

    receiving indications of received pilot signal strengths from at least some of the plurality of user terminals;

    based noon the received indications of received pilot signal strengths from the plurality of user terminals assigning each reporting user terminal to a respective user-group area; and

    temporally synchronizing transmissions of darn from to base station to the plurality of user-group areas such that the base station does not transmit data at the same time to two geographically adjacent user-group areas.

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