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Method of coexistence of multiple wireless fire systems

  • US 9,295,066 B2
  • Filed: 12/09/2013
  • Issued: 03/22/2016
  • Est. Priority Date: 12/09/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • a processor of a wireless gateway of a security system detecting other interfering wireless gateways of the security system, their frequency hopping pattern, their phase offset in the frequency hopping pattern relative to a time reference and a dwell time between hops in the frequency hopping pattern relative to the time reference;

    a processor of the wireless gateway selecting a channel set and a phase of operation for communicating with a plurality of sensors relative to the time reference using frequency hopping based upon the detected frequency hopping pattern, the phase and dwell time of the other wireless gateways;

    a processor of the wireless gateway communicating with the plurality of sensors and periodically comparing its phase of operation with the phase of the other interfering wireless gateways; and

    a processor of the wireless gateway adjusting its phase to avoid interference based upon the comparison with the phase of the other interfering wireless gateways.

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