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A link switching method and device

A link switching and link technology, which is applied in the field of network communication, can solve the problems of link signal attenuation, affecting the safety and reliability of data transmission, and failing to switch backup links in time, so as to achieve the effect of improving communication quality

Active Publication Date: 2018-12-25
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the Mesh network using waveguide as the transmission medium, the link signal will rapidly attenuate at the end of the waveguide. The existing technical solutions cannot detect this change in time, resulting in the inability to switch to the backup link in time, resulting in data loss. Affect the security and reliability of data transmission

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

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Embodiment Construction

[0020] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0021] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The application provides a method and device for switching a link, and is applied to a vehicle-mounted access point AP in a Mesh network. A first link is established by the vehicle-mounted AP and a first trackside AP of which a signal is a waveguide signal. The method comprises the following steps: when a second trackside AP of which the signal is an air interface signal is detected, establishing a second link with the second trackside AP; calculating the transmission time of the signal between the vehicle-mounted AP and the second trackside AP; switching the first link into the second link according to the transmission time of the signal. The method and the device disclosed by the application fully utilize the transmission characteristic of a waveguide pipe, premature link switching does not exist, and besides the link switching is performed in a region close to the air interface signal, so that the communication quality after the link switching is improved.

Description

technical field [0001] The present application relates to the technical field of network communication, and in particular to a link switching method and device. Background technique [0002] Mesh (wireless mesh) network is a new type of wireless network architecture that provides support for AP (Access Point, Access Point) mobility. Therefore, Mesh network technology is often applied to rail transit. [0003] Take the subway Mesh network as an example. On-board APs are installed on subway trains, and a trackside AP is installed at intervals beside the subway track. As the train moves at a high speed, link switching needs to be performed between the on-board AP and the trackside AP to Ensure that the vehicle AP is always connected to the wayside AP with the best communication quality. [0004] In the prior art solution, multiple links are established between the vehicle-mounted AP and the trackside AP, and the link with the best quality is selected as the main link for data ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00
CPCH04W36/0011H04W36/08
Inventor 傅嘉嘉
Owner NEW H3C TECH CO LTD