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TIME-REVERSAL WIRELESS PARADIGM FOR INTERNET OF THINGS

  • US 20150257167A1
  • Filed: 03/10/2014
  • Published: 09/10/2015
  • Est. Priority Date: 03/10/2014
  • Status: Active Grant
First Claim
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1. A method of connecting devices to a network, the method comprising:

  • providing base stations that are connected to a network;

    at each of the base stations, receiving probe signals from terminal devices that intend to communicate with the base station,for each of the terminal devices that intends to communicate with the base station, calculating a signature waveform based on a time-reversed waveform of a channel response signal derived from the corresponding probe signal,for each of the terminal devices that the base station intends to transmit downlink data, determining a downlink transmit signal for the terminal device based on the downlink data and the corresponding signature waveform, andtransmitting the downlink signals to the terminal devices;

    wherein each base station has a broadcast region such that terminal devices within the broadcast region can communicate with the base station, several base stations are positioned at locations such that they have overlapping broadcast regions, several terminal devices are located within the overlapped broadcast regions, the base stations transmit the downlink signals using a same frequency band, and some downlink signals transmitted by base stations having overlapping broadcast regions also overlap in time.

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