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Systems and methods for efficiently communicating between low-power devices

  • US 10,203,748 B2
  • Filed: 06/30/2015
  • Issued: 02/12/2019
  • Est. Priority Date: 06/30/2015
  • Status: Active Grant
First Claim
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1. A system configured to communicate according to a communication schedule comprising a plurality of frames, each frame of the plurality of frames being organized according to a grid of cells, each of the cells being associated with one of a plurality of communication channels and one of a plurality of time slots, the system comprising:

  • a first electronic device configured to activate a receiver according to the communication schedule to receive a wake-up packet that indicates there are data packets to receive from a second electronic device by;

    activating the receiver relative to a time slot on a communication channel for a first duration of time;

    deactivating the receiver for a second duration of time after the first duration of time expires to reduce power consumption by the first electronic device; and

    reactivating the receiver relative to the time slot on the communication channel for a third duration of time after the second duration of time expires, the timing of the activation and the reactivation being disposed about the time slot on the communication channel to account for clock drift of the first electronic device, the second electronic device, or both; and

    the second electronic device configured to communicate with the first electronic device by;

    transmitting the wake-up packet during the time slot on the communication channel, the time slot and the communication channel being associated with a cell in the communication schedule at a known position in each frame of the plurality of frames of the communication schedule, and the first electronic device being configured to perform an operation based on receiving the wake-up packet; and

    in response to the first electronic device receiving the wake-up packet, receiving, from the first electronic device, an acknowledgment packet associated with the wake-up packet.

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