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A method and device for switching between active and standby links

A link switching and link technology, applied in the field of communication, can solve the problem of waste of channel resources, and achieve the effect of improving the utilization rate and reducing the possibility of packet loss.

Active Publication Date: 2021-10-19
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the embodiments of the present application is to provide a method and device for switching between active and standby links, so as to solve the problem of wasting channel resources and improve the utilization of channel resources.

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  • A method and device for switching between active and standby links
  • A method and device for switching between active and standby links
  • A method and device for switching between active and standby links

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0030] In order to solve the problem of channel resource waste, an embodiment of the present application provides a method and device for switching between active and standby links, which are applied to vehicle-mounted APs, wherein the method for switching between active and standby links includes:

[0031] After the vehicle-mounted AP is powered on, each radio frequency unit of the vehicle-mounted AP establishes a Mesh link with the trackside AP scanned by each radio frequency unit ...

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Abstract

The embodiment of the present application provides a method and device for switching between active and standby links. After the active Mesh link is determined, the working channel of the neighbor trackside AP of the active trackside AP is obtained from the active trackside AP. According to the standby radio frequency unit Determine the standby working channel with the obtained working channel, switch the working channel of each standby radio frequency unit to a standby working channel, and establish a standby Mesh link through the standby radio frequency unit; when it is necessary to switch the Mesh link, from the established Determine the Mesh link that satisfies the preset condition among the standby Mesh links, and switch the determined Mesh link to be the active Mesh link. The trackside AP in the embodiment of the present application adopts multi-channel deployment, which improves the utilization rate of channel resources. The vehicle-mounted AP establishes a backup Mesh link based on a backup working channel, and switches between the active and standby Mesh links when Mesh link switching is required, reducing the possibility of packet loss.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a method and device for switching between active and standby links. Background technique [0002] A Mesh (mesh) network can provide wireless access, and a multi-hop wireless Mesh link can be established through an access point (AccessPoint, AP) in the Mesh network. Based on this characteristic of the Mesh network, the Mesh network is widely used in the networks of subways, railways and other scenarios. [0003] Taking the subway scene as an example, several trackside APs are deployed beside the subway track, and a vehicle-mounted AP is also deployed on each vehicle. The vehicle-mounted AP and the trackside AP can establish a Mesh link. Even when the vehicle is moving, the vehicle-mounted AP can establish multiple Mesh links with multiple trackside APs at the same time, and use one of the Mesh links as the primary Mesh link for data transmission, and the othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W76/15H04W4/42H04W4/44
CPCH04W24/04H04W4/42H04W4/44H04W76/15
Inventor 姚鼎淋
Owner NEW H3C TECH CO LTD
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