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Beam wobbling for increased downlink coverage and capacity

  • US 8,655,410 B2
  • Filed: 11/03/2011
  • Issued: 02/18/2014
  • Est. Priority Date: 09/30/2003
  • Status: Active Grant
First Claim
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1. A method of operating a base station of a cellular radio system to serve a coverage area, the method comprising:

  • moving a downlink beam to one or more angular positions in a sector of a cell in the coverage area, wherein the downlink beam comprises at least two directional beams of similar beam widths, and the downlink beam is coupled to a base station of a cellular radio system in a coverage area;

    associating the angular positions of the two directional beams with a time interval of a plurality of successive time intervals such that the two directional beams move in a cyclic repeated pattern and a portion of the two beams overlap; and

    during a first time interval of the successive time intervals, transmitting one or more signals in one of the directional beams to a first user terminal located in a first beam of the directional beams;

    changing the angular position during a second time interval of the successive time intervals such that a second user terminal is located near the center of the first beam; and

    during a second time interval, transmitting one or more signals in the first beam to the second user terminal.

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