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A wireless channel switching method and device

A wireless channel, channel technology, applied in the field of communication, can solve the problem of low channel switching accuracy

Active Publication Date: 2016-12-07
RUIJIE NETWORKS CO LTD
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  • Description
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Problems solved by technology

[0010] Embodiments of the present invention provide a wireless channel switching method and device to solve the problem of low accuracy of existing channel switching

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  • A wireless channel switching method and device
  • A wireless channel switching method and device

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Embodiment Construction

[0024] The following describes specific implementations of a wireless channel switching method and apparatus provided by the embodiments of the present invention with reference to the accompanying drawings.

[0025] A wireless channel switching method provided by an embodiment of the present invention, such as figure 1 shown, including the following steps:

[0026] S11: The AP scans the current working channel and the preset non-working channel for a set duration in a promiscuous mode according to a preset period in sequence, and obtains scan information of each channel;

[0027] Here, the scanning information of each channel includes all probe response packets received by the AP within each set duration, as well as all data packets carrying the retransmission packet flag bit, node identification and packet transmission rate;

[0028] S12: Determine the response time of each channel according to the probe response message in the obtained scanning information and the correspon...

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Abstract

The embodiment of the present invention provides a wireless channel switching method and device. In this method, the AP scans the current working channel and some non-working channels in the promiscuous mode according to the preset period in sequence, and obtains the Scan information; determine the response time of each channel according to the probe response message in the scan information and the corresponding probe request message sent by itself within each set duration, and the determined response time is not greater than the set time The channel of the candidate channel is used as the candidate channel; according to the retransmission message flag bit, node identifier and message transmission rate carried in the data message in the scan information of the candidate channel, calculate the corresponding channel quality evaluation value, and switch itself to the calculated On the candidate channel whose channel quality assessment value is not less than the set threshold. The present invention scans the current working channel and some non-working channels through the AP in the promiscuous mode, and can switch to a channel with better channel quality, and the switching accuracy is higher.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a wireless channel switching method and device. Background technique [0002] For a wireless local area network (Wireless Local Area Network, WLAN), a channel is a very scarce resource, and each access point AP can only work on the channel allocated to it. Since there are a large number of possible interference sources in the WLAN working frequency band, such as radar, microwave, interference caused by other APs in use and the terminal STA co-occupying the channel, etc., they will interfere with the normal operation of the AP. It is particularly important to switch to ensure that each AP works on the channel with the best channel quality and to reduce and avoid adjacent channel interference as much as possible. [0003] At present, the following process is usually used to realize the switching of wireless channels: the AP scans the current working channel a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/30
Inventor 陈航
Owner RUIJIE NETWORKS CO LTD
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