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A link switching method and device

A link switching and link technology, applied in the field of communication, can solve the problem of unstable communication between vehicle-mounted AP and trackside AP, and achieve the effect of improving stability

Active Publication Date: 2019-12-06
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a link switching method and device to solve the problem of unstable communication between the vehicle-mounted AP and the trackside AP in the current link switching

Method used

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  • A link switching method and device
  • A link switching method and device
  • A link switching method and device

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Embodiment Construction

[0023] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] see figure 1 It shows a schematic diagram of the subway Mesh networking environment. In the Mesh networking environment, AP0, AP1, and AP2 are trackside APs, which are connected to the switch through wired cables, and then connected to the control center through the switch. AP3 is the AP in the subway train. Vehicle-mounted AP, during the progress of the subway train, the vehicle-mounted AP gradually performs link switching with the trackside AP along the direction of the train, so as to realize the information interaction between the train and the control center. For example, the control center can monitor the running status of the train and control the start and stop of the train or door opening...

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Abstract

The invention provides a link switching method and apparatus. The method comprises the following steps: receiving first environmental information monitored by a trackside AP to obtain a first monitoring result; monitoring second environmental information of a vehicle-mounted AP by the vehicle-mounted AP to obtain a second monitoring result; evaluating the link communication quality according to the first monitoring result and the second monitoring result; and performing link switching according to an evaluation result. Therefore the problem of communication instability between the vehicle-mounted AP and the trackside AP in the current link switching is solved.

Description

technical field [0001] The present application relates to communication technology, in particular to a link switching method and device. Background technique [0002] The wireless mesh Mesh network is a new type of wireless network architecture that provides support for the mobility of APs (Access Points, Access Points). Therefore, Mesh network technology is often used in rail transit. [0003] Take the subway Mesh network as an example. A vehicle-mounted AP is installed on a subway train, and a trackside AP is installed at intervals beside the subway track. With the high-speed movement listed, the link switching between the vehicle-mounted AP and the trackside AP is carried out gradually to ensure The subway train interacts with the information in the control mind. [0004] During the link switching process, in order to ensure the communication quality, the vehicle-mounted AP and the trackside AP generally establish multiple links, and the vehicle-mounted AP regularly dete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W36/00H04W36/30H04W84/18
CPCH04W24/02H04W36/0083H04W36/30H04W84/18
Inventor 李明金
Owner XINHUASAN INFORMATION TECH CO LTD