Method and device for detecting adjacent channel interference

Abstract

The invention provides a method and device for detecting adjacent channel interference. The method comprises the steps that an AP broadcasts a first silent message on a channel occupied by the AP according to a set period; a spectral analysis is conducted on the channel in a first set duration to obtain spectral analysis data of the channel; the spectral analysis data meeting preset conditions are determined according to RSSI values of all sampling points in the obtained spectral analysis data, and whether the quantity of the determined spectral analysis data is greater than or equal to a set quantity is judged; on the condition that the quantity of the determined spectral analysis data is judged to be greater than or equal to the set quantity, the adjacent channel interference existing in the AP is determined. According to the method and device for detecting the adjacent channel interference, the AP sends the silent message, so that an STA and another AP receiving the silent message are in a silent state for a period of time, then whether the adjacent channel interference exists in the AP can be detected as long as the spectral analysis is conducted on the channel occupied by the AP, and the spectral analysis does not need to be conducted on other channels. Therefore, a lot of time is saved, and detection efficiency is improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for detecting adjacent frequency interference. Background technique [0002] Wireless local area network (Wireless Local Area Network, WLAN) is to use wireless communication technology to interconnect computer equipment to form a local area network that can communicate with each other and share resources. [0003] like figure 1 As shown, the current WLAN architecture generally includes a gateway 101, a core switch 102 interacting with the gateway 101, a wireless controller ((Access Controller, AC) 103 interacting with the core switch 102, and at least one access switch 104, and an access switch 104 interacting with the access switch 102. At least one access point 105 (Access Point, AP) interacting and at least one station 106 (Station, STA) interacting with AP105, etc. In this architecture, for the wireless network resources provided by AP105...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a detection method and device for adjacent frequency interference, which is used to solve the problem of low detection efficiency using the existing detection method for adjacent frequency interference

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