Method and device for resisting interference in wireless local area network
A wireless local area and network technology, applied in wireless communication, network topology, power management, etc., can solve the problems of repeated operation of resources, reduce transmission power, deterioration, etc., to improve the network environment, improve overall performance, and reduce interference.
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Embodiment 1
[0025] Currently, the WLAN network has a centralized WLAN, thin AP architecture, and a distributed WLAN, fat AP architecture. In the embodiment of the present invention, a centralized WLAN and thin AP architecture is taken as an example for description.
[0026] The characteristic of the centralized WLAN is that the AC (Access Controller, access controller) coordinates with the wireless terminal WTP (thin AP) to share various 802.11 services, and the AC performs centralized configuration on multiple WTPs. In the centralized WLAN architecture, the WTP and the access control point AC undertake part of the logical functions of the AP respectively, and the two coordinate and work together to realize all the logical functions of the AP. A LAN with this architecture can better solve problems in management, coordination configuration, radio frequency control, security, etc., making a large-scale WLAN easier to manage.
[0027] see figure 1 As shown, a method for anti-interference i...
Embodiment 2
[0041] In the embodiment of the present invention, the centralized WLAN is still taken as an example for description.
[0042] see figure 2 As shown, a method for anti-interference in a wireless local area network, comprising the following steps:
[0043] Step S201: Periodically poll all APs under the control of the AC, and perform interference avoidance operations in sequence. In one cycle, the channels in the same channel set can be periodically scanned, and each channel in the channel set can be generated according to the collected relevant information. The channel quality evaluation table of the channel to reflect the current quality status of each channel.
[0044] Step S202: Read the channel quality evaluation table of the current working channel of the currently processed AP.
[0045] Step S203: Enter the channel quality judgment step, which has 3 outputs: a), the current channel has radar signals, and the channel must be switched; b), the channel quality is good, an...
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