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Systems and methods to synchronize wireless devices in the presence of a FMCW radio altimeter

  • US 10,177,868 B2
  • Filed: 12/17/2015
  • Issued: 01/08/2019
  • Est. Priority Date: 12/17/2015
  • Status: Active Grant
First Claim
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1. A wireless device network, the network comprising:

  • a plurality of device nodes that share a radio frequency spectrum using time-division multiple accesses;

    a network synchronizing device in wireless communication with the plurality of device nodes, the network synchronizing device coupled to a timeslot allocation function, wherein the timeslot allocation function allocates to the network synchronizing device an allocated timeslot from a frame of timeslots on a first designated synchronization channel within the radio frequency spectrum;

    wherein the network synchronizing device broadcasts an arbitrary timeslot synchronization beacon to the plurality of device nodes on the first designated synchronization channel in the allocated timeslot, wherein the arbitrary timeslot synchronization beacon is arbitrary in that the allocated timeslot from the frame of timeslots for broadcasting of the arbitrary timeslot synchronization beacon is delinked from any periodicity;

    wherein the arbitrary timeslot synchronization beacon comprises a Sync Timeslot identifier that indicates which timeslot of the frame of timeslots the arbitrary timeslot synchronization beacon was transmitted in, and a Sync Time indicator that includes a time that the arbitrary timeslot synchronization beacon was transmitted.

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