WIRELESS DEVICE LINK METRIC FOR EFFECTIVE COMPARISON OF MULTI-HOP ROUTES IN WIRELESS MESH NETWORKS

摘要

Link metrics for communication paths in multi-hop wireless mesh networks of industrial radio device are determined based on signal strength and traffic level performance of each link in the communication paths. A path metric is determined from the link metrics and path metrics are compared and utilized for optimal routing of messages through the network.

主权项

1. An input/output device comprising:
a transmitter configured to generate a radio frequency signal transmission; a receiver configured to receive a radio frequency signal transmission; and a processor-based control coordinating transmissions of radio frequency signal transmissions in response to received signal transmissions in a multi-signal path transmission network, the processor-based control configured to:
measure a signal strength value for a first communication link established through at least one neighbouring input/output device;calculate a signal strength performance metric based on the measured signal strength of the first communication link;measure a traffic level value observed by the similar input/output device at the remote end of the first communication link established through the at least one input/output device;calculate a traffic level performance metric based on the measured traffic value of the device at the remote end of the first communication link;determine a link metric for the first communication link, based on the calculated traffic level performance metric and the calculated traffic level performance metric; andutilize the first link metric to evaluate a preferred path for routing of a message.