Channel management method and device for wireless local area network in rail transport, and wireless local area network system in rail transport
US10531468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2017 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Feb 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A channel management method and device for a wireless local area network (WLAN) in rail transport, where the method includes instructing, by the controller, a to-be-changed trackside access point (AP) to change an operating channel from an operating channel of a first vehicle-mounted AP on a first vehicle to an operating channel of a second vehicle-mounted AP on a second vehicle, where the to-be-changed trackside AP for the first vehicle is behind the first vehicle, and a distance of the to-be-changed trackside AP to the first vehicle exceeds a preset threshold. Because operating channels of two vehicle-mounted APs are different, interference between vehicle-mounted APs on one vehicle and a next vehicle is low. Moreover, a trackside AP behind a previous vehicle is instructed to change a channel such that a vehicle-mounted AP does not need to change a channel. Therefore, a handover time is short.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.