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Detecting the status of a mesh node in a wireless mesh network

  • US 10,362,500 B2
  • Filed: 09/12/2014
  • Issued: 07/23/2019
  • Est. Priority Date: 09/12/2014
  • Status: Active Grant
First Claim
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1. A method for detecting the status of a mesh node in a wireless mesh network of one or a plurality of mesh nodes, wherein a gateway is building up a trust vector over time by combining:

  • active detection of the status of a mesh node by accumulating responses to transmitted queries, wherein the active detection comprises;

    sending a query to a mesh node neighbour according to a communications protocol, andchecking whether the response received is the expected response, wherein if the response received is the expected response, storing a positive value in a table, and if the response received is not the response expected, storing a negative value in a table,passive detection of the status of a mesh node by monitoring and collecting routing metric values and storing the values in a table, wherein the passive detection comprises;

    monitoring the behavior of their upstream neighbours, with respect to link quality,collecting the link quality values in a table,storing the link quality values about its neighbours periodically in the table, based on a routing tree, andstoring the time at which the link quality is measured along with the link quality and a neighbor identifier, thereby enable link quality values to be stored over time,wherein a reputation manager at each mesh node sends the trust vector [AEcB, AKcB, ψ

    pRcB] at regular intervals to the gateway, wherein the trust vector comprises (1) an experience valuation based on the gateway'"'"'s direct experience with the mesh node, (2) a knowledge valuation based on what the gateway knows about the mesh node, and (3) a recommendation valuation based on collected recommendations from other mesh nodes or other gateways, wherein the status of the mesh node is regarded as misbehaving when the trust vector reaches a certain level.

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