DUPLEXING METHOD OF WIRELESS SECTION SYSTEM

摘要

PURPOSE: A wireless section dualization method is provided to prevent stoppage of wireless communication by forming a wireless link with the other communication section although one side of communication section is out of order. CONSTITUTION: Data are transceived through a wireless link between a first car wireless transceiver of a city railroad car and a first ground wireless transceiver in an ascending direction of ground railroad (S106). When the wireless link between the first car wireless transceiver and the first ground wireless transceiver is disconnected, the first car wireless transceiver transmits a communication link failure message to a second car wireless transceiver of the city railroad car (S110). Data are transceived through a backup system wireless link between the second car wireless transceiver and a second ground wireless transceiver installed in a descending direction of ground railroad (S118). [Reference numerals] (S100) Attempt wireless communication between main devices (first on-broad wireless transceiver & first ground wireless transceiver); (S102) Communication between main devices is successful?; (S104) Configure a link between main devices after transmitting a message of communication success with the ground from first on-broad wireless transceiver to second on-broad wireless transceiver; (S106) Transceiver data via the wireless link path between main devices; (S108) Link between main devices is checked?; (S110) Transmit a link cutting message on the ground from first on-broad wireless transceiver to second on-broad wireless transceiver; (S112) Attempt wireless communication between reserved devices (second on-broad wireless transceiver & second ground wireless transceiver); (S114) Communication between reserved devices is successful?; (S116) Configure a link between reserved devices after transmitting a message of communication success with the ground from second on-broad wireless transceiver to first on-broad wireless transceiver; (S118) Transceiver data via the wireless link path between reserved devices; (S120) Link between reserved devices is checked?; (S122) Transmit a link cutting message on the ground from second on-broad wireless transceiver to first on-broad wireless transceiver