Wireless local area network (WLAN) smooth roaming method and system, access points and access controller

Abstract

The invention discloses a wireless local area network (WLAN) smooth roaming method and system, access points and an access controller, and relates to the field of WLAN roaming. Under the current circumstance that an access controller and access point framework of a WLAN is not changed, roaming launch and control are concentrated in the access controller, the access points are responsible for executing roaming launch and control, smooth roaming is achieved under the situation that client equipment has no movement or perception, and the roaming process is simplified. In addition, the access controller selects the optimal access point to forward data of the client equipment according to the quality of connection between the client equipment and the access points, and roaming experiences of users are greatly improved.

Description

technical field [0001] The present invention relates to the field of wireless local area network (Wireless Local Area Networks, WLAN for short) roaming, in particular to a WLAN smooth roaming method and system, an access point and an access controller. Background technique [0002] With the popularization of smart handheld terminals and the rapid development of optical network cities, people's demand for wireless roaming functions of terminals is becoming stronger and stronger. [0003] Currently, the client device roams among multiple access points (Access Points, APs) in the WLAN system, mainly initiated by the client device, and the client device judges whether to start the roaming process. During the roaming process, the client device initiates a negotiation request to the newly discovered AP, and then completes the entire roaming process. [0004] Whether to start the existing WLAN roaming process is determined by the client device. On the one hand, the roaming process...

AI Technical Summary

Problems solved by technology

[0004] Whether to start the existing WLAN roaming process is determined by the client device. On the one hand, the roaming process is more complicated. On the other hand, in order to ensure that user data is not interrupted, the client device often cuts off when the current signal strength cannot maintain normal communication. The current wireless signal re-enters the process of detecting surrounding wireless signals. Therefore, when the client device initiates a roaming registration request, the user's wireless experience is already relatively poor.

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