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AP (application process) switching method used in WiFi (wireless fidelity) communication

A technology for switching gate and AP information, which is applied in the field of communication, can solve the problems of time-consuming, etc., and achieve the effect of avoiding frequent switching, satisfying access service and communication effect, and reliable switching decision-making

Inactive Publication Date: 2013-02-06
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

[0003] Traditional WiFi network AP access point switching follows the idea of ​​"disconnect before connecting", that is, when the current connection quality becomes unacceptable, the mobile terminal (STA) will try to connect to other APs instead, and the mobile terminal (STA) STA) does not prepare for possible handover during normal communication, so it knows nothing about the surrounding AP resources, then it must first search for available APs around when switching, and this scanning process takes a lot of time

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  • AP (application process) switching method used in WiFi (wireless fidelity) communication
  • AP (application process) switching method used in WiFi (wireless fidelity) communication
  • AP (application process) switching method used in WiFi (wireless fidelity) communication

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Embodiment Construction

[0015] Such as figure 1 As shown, the coverage of the AP access point in the WiFi network is limited, so when the mobile terminal moves between different APs, AP switching occurs. The switching method of the AP access point provided by the present invention is as follows: figure 2 As shown in , the mobile terminal detects the received signal strength of the currently connected AP, and then compares the detected current AP signal strength with the scanning threshold value. If the signal strength is higher than the scanning threshold value, the behavior is terminated directly; if the detected When the current AP signal strength is lower than the scanning threshold, the scanning process is started, the scanned AP information is dynamically stored, and these scanned APs are prioritized according to the signal strength, and the current connected AP continues to detect the received Signal strength, and compare the detected current AP signal strength with the switching threshold va...

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Abstract

The invention discloses an AP (application process) switching method used in WiFi (wireless fidelity) communication, and provides a WiFi access point switching method for dynamically adjusting threshold values in real time. The AP switching method is characterized in that after a mobile terminal detects received signal intensity of a currently connected AP, the signal intensity is compared to a scanning threshold value, scanning is started if the signal intensity is lower than the scanning threshold value, and scanned adjacent AP information is dynamically stored; the mobile terminal continues detecting received signal intensity of the currently connected AP, the signal intensity is compared to a switching threshold value, AP switching is realized if the signal intensity is lower than the switching threshold value, and a switching object is an AP access point with the highest stored signal intensity; and the scanning threshold value and the switching threshold value are adjusted simultaneously. By the AP switching method, the mobile terminal can be quickly switched to the optimal AP when moving within a coverage area of a WiFi network, and satisfactory access service and communication effect are obtained.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for switching a WiFi access point that dynamically adjusts a threshold value in real time. Background technique [0002] In WiFi communication, the mobile terminal (STA) realizes Internet access through the access point AP. Since the coverage of an AP access point is limited, usually only 50-300m, the support for terminal mobility is very limited. Perform fast switching between different APs to reduce the network interruption time caused by switching between APs. The switching is mainly divided into three stages: the discovery AP (probe) stage, the authentication (Authenticate) In the AP stage, the mobile device must first obtain the relevant information of the available APs through the scan mechanism. The common scanning methods include active scanning and passive scanning. Active scanning means that the mobile terminal (STA) actively sends a detection request, a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W36/30H04W84/12
Inventor 李颀边青何艳丽胡海强张小件翟佳
Owner SHAANXI UNIV OF SCI & TECH
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