Method and device for distributing channels in wireless local area network

Abstract

The embodiment of the invention provides a method for distributing channels in a wireless local area network, applied to the wireless local area network including a first AP set composed of at least two APs. The method comprises the following steps of determining a neighbor AP list corresponding to each AP in the set, acquiring an optimal value of each AP in the set in same-frequency interference with each neighbor AP in the neighbor AP list and a channel value of each AP corresponding to the optimal value, and using the channel value as a working channel value of each AP. Meanwhile, the embodiment of the invention also provides a device for distributing the channels in the wireless local area network. The method and the device has the beneficial effects as follows: the channels can be rapidly planned, the channel between the APs can be automatically and effectively averted, the same-frequency interference of the network can be reduced as much as possible, additional overhead of the network can be reduced, and network performance can be improved.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method and device for allocating channels in a wireless local area network. Background technique [0002] In recent years, the Wireless Local Area Network (WLAN) based on the IEEE 802.11 protocol has developed rapidly due to its outstanding advantages and mature technology, and is widely used in the network construction of shopping malls, enterprises, hospitals, schools and conference venues. [0003] The IEEE802.11 protocol stipulates that WLAN uses two frequency bands of 2.4GHz and 5GHz in ISM (Industrial Scientific Medical), adopts a half-duplex communication mechanism, and provides wireless shared access based on CSMA / CA (Carrier Sense Multiple Access with Collision Avoidance) , that is, in the same area, only one device can send packets exclusively. However, spectrum resources are limited, especially the IEEE802.11b and IEEE802.11g standard wireless networks work in the ...

AI Technical Summary

Problems solved by technology

This scheme has convergence oscillation, slow convergence, or even no convergence

However, if channel allocation is performed manually, as the scale of AP deployment becomes larger, the allocation workload will be huge and error-prone. Not only will more labor costs be consumed, but manual planning may also have more uncertainties. For example, AP deployment Mistakes, etc. will cause actual situation and plan to be inconsistent

Images