Abstract
In this paper, the theoretical analysis showed that the length of the route and the interference of links were the main factors that influence the throughput of the network. Then, a dynamic channel allocation algorithm base on the length of routes and the interference of links was proposed to enhance the system throughput. In the proposed algorithm, ant colony algorithm was used to collect the information of network, such as the length of routes and the interference of links. Then, the priority of link access channel was decided according to the collected information. The simulation results showed that the proposed algorithm could improve the whole network throughput obviously.
Highlights
Wireless mesh networks (WMNs), evolving from ad hoc network with comparative static characteristics, could be regarded as a wireless version of the Internet
A multichannel WMN consists of a number of stationary wireless routers, where each route is equipped with multiple network interface cards
Researchers had done great work with the purpose of improving the capacity of WMNs. [1, 2] proposed a centralized channel assignment concept called the first random channel assignment algorithm (FRCA). [3, 4] proposed a distributed channel allocation algorithm. [5, 6] proposed a traffic-aware channel assignment algorithm. [7] proposed multiple channel allocation algorithm basing on the link priority determined by the information of link interference and link services. [8, 9] proposed an ant colony intelligencebased dynamic channel allocation algorithm (ACI-DCA), but the algorithm was just adept to single-hop networks, not adept to multihop networks
Summary
Wireless mesh networks (WMNs), evolving from ad hoc network with comparative static characteristics, could be regarded as a wireless version of the Internet. The number of radio interfaces is much more than the number of effective channel, which leads to the results that different and links among mesh routers and mesh clients to operate on the same channels. This case severely affects the network overall performance. Route interference and route lengthbased dynamic channel allocation algorithm was proposed to combat the interference in wireless mesh networks [11, 12]. The proposed algorithm requires the information of the network topology and the interference of the link and route This information could be collected with the ant colony-based intelligent algorithm [8].
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