Method and apparatus for beam steering in a wireless communications system
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United States of America Patent
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Issued Date -
Jul 7, 2005
app pub date -
Feb 22, 2005
filing date -
Sep 13, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and apparatus is provided that allows M transceivers to transmit/receive using M2.sup.N distinct beams using passive beam steering. This provides for the use of arbitrary narrow beams with a number of transceivers that is a fraction of the number of beams but ensures 360.degree. coverage. In other words it permits significant improvements in the link budget with a minimal rise in the cost of the BS. The apparatus includes M distribution switches applied to 2.sup.N passive beam forming networks each coupled to M antennas. The method and apparatus are compatible with TDM in the downlink and TDMA in the uplink.
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