Switching method and device of wireless local area network

Abstract

The invention discloses a switching method and a switching device of a wireless local area network. The method comprises the steps as follows: when a client end device detects that the signal intensity of a current access point is lower than a predetermined scan threshold, the client end device scans adjacent AP; when the client end device detects the adjacent AP the signal intensity of which is larger than or equal to the predetermined back-up AP threshold, the adjacent AP is added to a back-up AP list; and when a predetermined switching condition is satisfied, the client end device is switched to the adjacent AP in the back-up AP list from the current AP. In the invention, when moving, a wireless terminal device can start scan in time to acquire information of the adjacent AP according to parameters indicated by a network side AP, adjusts switching algorithm according to the parameters indicated by the network side AP to select the adjacent AP to carry out switching, and then is switched to a proper AP in real time when fast moving in a WLAN overlay area and obtains satisfied access service and communication effects.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a switching method and equipment in a wireless local area network. Background technique [0002] A WLAN (Wireless Local Area Network, wireless local area network) provides a wireless connection service of a local area network, and is one of the currently popular technologies because it can provide high-speed wireless data access. WLAN has been widely used in cities, public places, and various places such as enterprises, buildings, and families. [0003] In urban coverage, WLAN exists more as a Mesh network, providing a public access network. The use of this public access network can be divided into two forms: static and moving. The moving way is to realize wireless access in a moving vehicle. The use of motion mode brings great challenges to wireless switching. In existing WLAN standards, switching between different APs (Access Points, Access Points) of a wireless clien...

AI Technical Summary

Problems solved by technology

In addition, if the coverage of each AP is not very long, and the movement speed of the client device is relatively high, the client device can switch to different APs, but the wireless link will be intermittently connected, and the communication time is limited. very short

[0009]Based on the above analysis, it can be found that the existing problems in the prior art are: when the wireless terminal equipment moves rapidly within the WLAN coverage area, it cannot switch to a suitable AP in real time, Resulting in the inability to obtain satisfactory access services and communication effects

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