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A link switching method and device

A technology for link switching and link backup, applied in the field of link switching methods and equipment, can solve problems such as poor WDS link quality, and achieve the effect of solving poor quality, ensuring network traffic, and a simple method

Active Publication Date: 2013-01-30
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a link switching method to solve the problem of poor quality of WDS links in a tunnel environment when the distance between APs is small

Method used

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  • A link switching method and device

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Experimental program
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Embodiment Construction

[0042] A kind of link switching method of the present invention is shown in Figure 5, comprises the following steps:

[0043] In step s501, the client AP detects that the signal strength of the main link exceeds a preset value.

[0044] In this step, the preset value may be a value related to the receiving saturation value of the AP. With the preset value, the AP actively initiates link switching before the problem of receiving saturation occurs.

[0045] In step s502, the client AP initiates standby link switching to establish a new standby link.

[0046] In this step, before the receiving saturation problem occurs on the main link, the client AP establishes a new backup link.

[0047] Step s503, the client AP switches the primary link to the newly established backup link.

[0048] In this step, before the receiving saturation problem occurs on the main link, the client AP switches the main link to the newly established standby link.

[0049] The implementation of the pres...

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PUM

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Abstract

The invention discloses a link switchover method, which comprises the following steps: a client end AP inspects that the signal strength of a main link surpasses a predetermined value; the client end AP initiates the switchover of a standby link and establishes the new standby link; the client end AP switches the main link to the newly established standby link. The invention also discloses equipment to realize the link switchover. The invention is capable of judging whether the distance between the vehicle AP and the tunnel AP is excessively near or not according to the signal strength. Therefore, the invention solves the problems of the worse quality of the WDS link when the distance between the APs is too small in the tunnel environment by a simple method which affects the communication, thereby ensuring the continuous stability of the vehicle AP network flow.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a link switching method and equipment. Background technique [0002] WDS (Wireless Distribution System, Wireless Distribution System) is a technology for connecting APs (Access Points) to APs. This technology can be applied in tunnel environments. Tunnel APs are arranged on the tunnel walls, and when vehicle-mounted APs are running in the tunnel A connection can be established with a tunnel AP (hereinafter referred to as ROOT AP, source AP), thereby providing a data link to a vehicle AP (hereinafter referred to as CLIENT AP, client AP). [0003] The working principle of WDS in the tunnel is as follows: during the rapid movement between the ROOT APs, the CLIENT AP will establish links with two ROOT APs at the same time, serving as the primary link and the backup link respectively. The data carried by the client AP is only transmitted from the main link, and the bac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/76H04B17/00H04W24/04
Inventor 徐百忱
Owner XINHUASAN INFORMATION TECH CO LTD