Method for detecting frequent switching on terminal from extended service set in wireless local area network

Abstract

The method comprises: AP1 records the moment establishing a correlation or re-correlation with STA, and waits a switch starting process of said STA; if it is a re-correlation frame, the AP previously connected to said STA is asked to return the frequently-switching decision set and saves it; after AP1 receives the de-correlation frame, if the current connection of said STA is longer than the time length threshold of stable connection, then the STA is at a stable connection state; if less than it, then decides if the sum of all recorded item time length in the STA decision set and the current connection time length is more than the maximum connection time length threshold; if yes, the frequent switch happens in the terminal; otherwise, the current connection time length is written into the frequent switch decision set newly-created.

Description

technical field [0001] The invention relates to a wireless local area network system in the communication field, in particular to a switching control method in the wireless local area network. Background technique [0002] WLAN (Wireless Local Area Network) refers to the application of wireless communication technology to interconnect computer equipment to form a network system that can communicate with each other and realize resource sharing. In a WLAN network environment, an extended service set is composed of one or more basic service sets and a distribution system connecting these basic service sets, and each basic service set includes a wireless access point device (AP). The Extended Service Set (ESS) is distinguished by ESSID (Extended Service Set Identification Number), and the wireless access point is distinguished by BSSID (Basic Service Set Identification Number). The terminal obtains the information of the extended service set and the basic service set in the WLA...

AI Technical Summary

Problems solved by technology

Terminals in frequent handovers, their load is transferred between wireless access points during the handover process, which destroys the stability of the extended service set

[0009] 2. Frequent switching affects terminal services

[0011] 1. Frequent switching cannot be accurately detected, and frequent switching can only be prevented within a certain limit or range

Due to drastic changes in the wireless network environment, terminals in overlapping coverage areas of multiple wireless access points are prone to receive signal gaps exceeding the threshold of the switching window

Too large or too small threshold settings will invalidate the frequent switching detection and control functions

[0012] 2. Frequent switching is implemented on the terminal, and terminals of different manufacturers have different selections for the threshold

[0013] 3. Unable to detect sequential switching of terminals between multiple wireless access points

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