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Multi-beam co-channel Wi-Fi access point

  • US 8,983,548 B2
  • Filed: 08/27/2013
  • Issued: 03/17/2015
  • Est. Priority Date: 02/13/2013
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • one or more Wi-Fi transmit antennas beamformers;

    one or more Wi-Fi receive antennas; and

    a number N of co-located co-channel Wi-Fi access points (APs) which comply with the IEEE 802.11 standard having Wi-Fi transmitters and receivers and connected to the Wi-Fi transmit antennas beamformers and the Wi-Fi receive antennas, wherein the Wi-Fi transmit antennas beamformers are configured to produce and transmit a plurality of directional beams of a common frequency, directed at a plurality of Wi-Fi user equipment (UE) devices such that the directional beams are sufficiently isolated from each other, so that at least some of the Wi-Fi UE devices communicate simultaneously with the plurality of Wi-Fi APS,wherein the receive and/or transmit antennas comprise an array of antenna elements and wherein said arrays are implemented with tapering that reduces side lobe levels of the beams, and wherein the tapering is carried out by monitoring traces of transmitted signals originated from said APs, and manipulating antenna weights to reduce said traces, and wherein said traces are fed into a cancellation process in which said traces are subtracted from samples of the original signal.

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