A method and device for switching access points in a wireless local area network

Abstract

Disclosed are a method and an apparatus for switching an access point (AP) in a wireless local area network, so as to enable a STA in power save mode to perform AP switching. The method comprises: a first AP determining that a STA connected to the first AP is in power save mode, wherein the first AP provides, based on a BSSID corresponding to the STA, a service to the STA, the BSSID corresponding to the STA being different from BSSIDs corresponding to any other STAs in the same ESS as the STA; the first AP determining a second AP in the same ESS to be a target AP connected after the STA is switched; the first AP sending a wake-up frame to the STA, wherein the wake-up frame is used to instruct the STA to be in a non-sleep state when the second AP sends a beacon frame based on the BSSID corresponding to the STA; and the first AP sending a switching instruction to the second AP, wherein the switching instruction is used to instruct the second AP to provide, based on the BSSID corresponding to the STA, a service for the STA.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and equipment for switching an access point AP in a wireless local area network (WLAN). Background technique [0002] In a wireless local area network (English: wireless local area networks, WLAN) system, a terminal needs to be connected to an access point (English: access point, AP), and transmit and receive data through the AP. During the communication process, the signal between the terminal and the currently connected AP may become poor. For example, when the distance between the terminal and the first currently connected AP becomes longer, the signal between them becomes poor. When the signal quality between the terminal and the first AP currently connected is lower than the threshold, the terminal will initiate an association request to the second AP with better signal, and switch from connecting with the first AP to connecting with the second AP. The above ...

AI Technical Summary

Problems solved by technology

When the terminal's RF module is turned off, the terminal cannot actively initiate roaming

When the terminal turns on the radio frequency module, the link between the terminal and the originally connected AP may have deteriorated to the point where it cannot communicate normally, and the terminal can only re-associate with the AP in the WLAN. When there is data buffered for the terminal, the STA will not be able to receive the data, resulting in data loss

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