Distributed adaptive dynamic channel dispatching method

Abstract

A method for distributing adaptive-dynamic distributed channel includes carrying out channel distribution randomly by AP and initializing internal network performance measurement table, recoding internal network throughput and channel collision probability at a regulation cycle by AP and writing them in said table, making comparison, confirming applied optimum switching-over probability to confirm channel to be used at next cycle by each AP when regulation cycle is come and not switching over channel by AP any more to make network be stabilized.

Description

technical field [0001] The invention relates to a method used in the technical field of wireless networks, in particular to a distributed adaptive dynamic channel allocation method. Background technique [0002] In recent years, wireless local area network has developed rapidly and been widely used due to its outstanding advantages and relatively mature technology. Therefore, in order to meet the growing demand for wireless network services, many companies have launched 802.11 wireless local area network services. The communication devices are also compatible with the 802.11 protocol. The IEEE802.11 protocol stipulates 14 available channels, but due to the lack of frequency resources, the frequency ranges between adjacent channels overlap, which must seriously inhibit the development of wireless LANs to some extent. So many researches are dedicated to the resource management of WLAN. Among them, channel allocation is the most important radio resource management method. In...

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Problems solved by technology

At present, most wireless local area networks use centralized management, which is relatively mature and can better allocate and optimize the resources of the entire network. The control is global and can be easily controlled by manual intervention. A centrally controlled management system is required, the cost is high, and the timeliness is poor, and the ability to adjust following sudden changes in the network is limited. Therefore, the dynamic channel allocation method of AP is getting more and more attention.

[0003] After searching the prior art documents, it was found that Hui Luo and N.K.Shankaranrayanan, "ADisttributed Dynamic Channel Allocation Technique for Throughput Improvement in A Dense WLAN Environment"--IEEE ICC. Channel allocation method to improve network traffic"--IEEE ICC.), the author proposes an adaptive distributed dynamic channel allocation method, which takes improving the throughput of each AP in the network as the objective function, and the APs can Communication, so as to exchange some information, such as the channel used, and the number of clients connected to each other, and then each AP performs channel adjustment according to the information exchanged with adjacent APs, but this channel allocation method requires between APs It is possible to communicate with each other to exchange their respective configuration information. This requirement is unrealistic and too ideal for the actual network, and it cannot solve the practical application.

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