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Asset tag tracking system and network architecture

  • US 10,210,353 B1
  • Filed: 03/09/2018
  • Issued: 02/19/2019
  • Est. Priority Date: 03/09/2018
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving, at three or more wireless communication nodes distributed about a space, a basic message transmitted by an asset tracking tag, the basic message including an identifier of the asset tracking tag and a basic message sequence number;

    at each of the three or more wireless communication nodes, measuring a signal attribute of the received basic message and associating the measured signal attribute with a node identifier of the respective wireless communication node making the signal attribute measurement;

    transmitting, by each of the three or more wireless communication nodes, a node asset message to an edge gateway, the node asset message including the asset tracking tag identifier, the basic message sequence number, the node identifier of the respective one of the three or more wireless communication nodes transmitting the respective node asset message, and the measured signal attribute of the basic message measured by the respective one of the three or more wireless communication nodes transmitting the respective node asset message;

    receiving, at the edge gateway, the respective transmitted node asset message transmitted by each of the three or more wireless communication nodes;

    determining, by the edge gateway, a number of the respective node identifiers nearest to the asset tracking tag based on the measured signal attribute of the basic message; and

    forwarding, by the edge gateway to a fog gateway of the space, an aggregated message including the asset tracking tag identifier, the basic message sequence number, a list of the number of node identifiers in association with a respective one of the highest measured signal attribute values, and an identifier of the edge gateway, the aggregated message for obtaining an estimate of the location of the asset tracking tag.

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