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Systems and Methods for Determining Link Quality

  • US 20100027437A1
  • Filed: 07/31/2009
  • Published: 02/04/2010
  • Est. Priority Date: 08/01/2008
  • Status: Abandoned Application
First Claim
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1. A computer-implemented method comprising:

  • transmitting a first quantity of messages to a remote device;

    receiving a second quantity of message acknowledgements from the remote device in response to receiving the first quantity of messages;

    determining a receive signal strength indicator (RSSI) value;

    comparing the RSSI value to a minimum RSSI threshold;

    if the RSSI value is greater than the minimum RSSI threshold;

    calculating an end-to-end link quality (EELQ) based at least in part on the percentage of message acknowledgements received and the link quality of the previous link in the network,determining a message success rate based on the first quantity and the second quantity,receiving a link quality from the remote device,determining an end-to-end link quality (EELQ) value based at least in part on a previous EELQ value and the message success rate;

    otherwise setting the EELQ value to 0;

    calculating an end-to-end link cost (EELC) value based at least in part on the EELQ;

    selecting a route based at least in part on the EELC; and

    transmitting a message to a second device on the route selected.

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