Judging method and judging device for interference source in wireless local area network (WLAN)

Abstract

The invention provides a judging method and a judging device for an interference source in a wireless local area network (WLAN). The method includes the following steps: forming a measuring report by each access point (AP) through scanning of an information channel, and structuring an information channel quality assessment form according to the measuring report, wherein the information channel quality assessment form is used for reflecting an interference condition caused by an environment factor to the AP; according to the information channel quality assessment form, establishing an interference condition assessment form, wherein the interference condition assessment form is used for reflecting an interference condition caused by the AP to a neighbor AP; and according to the neighbor condition assessment form, obtaining an interference source list of the whole network. By the adoption of the method and the device, a source causing interference to a system is found, so that a basis and an operation object are provided for a follow-up anti-interference operation, and therefore interference process to the network is finer and more precise, and the anti-interference operation which is repeated, invalid, and conflicting is avoided. The method and the device can be applied to an existing 802.11 a / b / g / n and later evolution versions, so that the whole network interference process in the method of planning as a whole can be achieved.

Description

technical field [0001] The invention relates to the technical field of wireless local area networks, in particular to a method for judging an interference source in a WLAN network and a device for judging an interference source in a WLAN network. Background technique [0002] Due to the high speed and low cost of the WLAN (Wireless Local Area Networks, wireless local area network) network, it can complement the advantages of the mobile communication network, provide the latter with high-quality indoor data service distribution technology, and has a suitable carrier-level operation mode, so in the near future The development is very rapid. At the same time, the interference problem has also become one of the main bottlenecks restricting its development. First of all, the number of effective channels in WLAN networks is limited, and its own characteristics lead to interference within the system: co-channel interference within the cell, adjacent channel interference between ad...

AI Technical Summary

Problems solved by technology

However, by passively detecting interference and adjusting its own power or channel to adapt to the current wireless environment, multiple APs that may cause mutual interference will perform self-adjustment, and then adjust to the same channel or reduce the transmission power to cause coverage holes. The channel environment not only does not improve, but even deteriorates; and if multiple interfered APs are adjusted, it may cause repeated operations and waste of resources, resulting in inefficiency

Because the interference of the current wireless environment can be solved by adjusting the interference source, but if multiple interfered APs are adjusted, new interference problems may still appear after the adjustment, which makes the situation more complicated

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