Wireless local area network switching method for track traffic and wireless local area network switching device

Abstract

The invention discloses a wireless local area network switching method for track traffic and a wireless local area network switching device. Through the method, after WLAN switching, trackside access points establishing link with a vehicle access point are taken as target trackside access points, the target trackside access points are arranged in a motion direction of a vehicle, the trackside access points establishing link with the vehicle access point before WLAN switching are taken as initial points, the multiple trackside access points along the motion direction of the vehicle which are closest to the vehicle access point are taken as the target trackside access points, when RSSI random fluctuation occurs, the target trackside access points are less influenced by fluctuation compared with other trackside access points, so channel quality between the vehicle access point and the target trackside access points can be guaranteed, and invalid and error switching can be avoided. Through the switching method, invalid and error switching can be avoided, and business loss caused by frequent switching can be reduced.

Description

technical field [0001] The present disclosure relates to the technical field of wireless networks, in particular to a method and device for switching wireless local area networks in rail transit. Background technique [0002] In order to meet the Internet access requirements of passengers in rail transit vehicles, a vehicle-to-ground communication system is currently provided for rail transit vehicles, and the vehicle-to-ground communication system adopts wireless local area network (English: wireless local area network, abbreviation: WLAN) technology. see figure 1 , the vehicle-ground communication system includes: a vehicle-mounted access point 1 , a trackside access point 2 and a switch 3 . Wherein, the trackside access point 2 is connected with the switch 3, and the trackside access point 2 is an access point (English: accesspoint, abbreviation: AP) arranged beside the track, and is usually arranged beside the track A plurality of trackside access points 2, the distanc...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for switching wireless local area networks in rail transit, to a certain extent solve the problem that in the traditional technology, when switching wireless local area networks in rail transit, the switching occurs too frequently, or the switching becomes invalid switch problem

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