STP pathway control system applied to wireless communication device having AMR function

摘要

A pathway control system, implementing control and setting for a communication pathway between wireless communication devices each implementing wired communication and wireless communication and each equipped with an AMR function, detects communication speed with respect to uplink wireless communication and downlink wireless communication in each wireless communication device, thus determining which one of uplink wireless communication and downlink wireless communication undergoes communication failure. It carries out adaptive modulation control on uplink wireless communication or downlink wireless communication, which undergoes communication failure, calculates new communication speed, and carries out STP pathway control based on new communication speed. Irrespective of a reduction of line speed due to activation of an AMR function, it is possible to automatically switch to redundant pathways by way of STP pathway control; it is possible to prevent momentary disconnection of wireless communication; and it is possible to maintain an adequate capacity for communication pathways.