Multi-channel Allocation Algorithm Based on AODV Protocol in Wireless Mesh Networks
Weiwei Zhang, HE Jia-feng, Guowang Gao, Li-li Ren, Xuanjing Shen · 2017
A Wireless Mesh Networks (WMN) consists of wireless mesh routers and terminals connected by wireless multi-hop communication. It can be divided into three network types, including terminal mesh networks, infrastructure mesh networks, and hybrid mesh networks according to the network topology and the node function. For infrastructure mesh networks, the network throughput will determine the number of terminals which can access the network. How to effectively use multiple orthogonal channels and multiple interfaces to increase the throughput of WMNs and decrease the radio link transmission interference is of great significance. In this paper, firstly, the characteristics of WMN are studied. According to these characteristics in WMNs, the interfaces in mesh router node are classified to two types: one is Data Backhaul Interface (BI), and another is Internal Traffic Transfer Interface (TI). In view of this, we proposed a channel assignment scheme based on group management. Secondly, the routing protocols of WMN are studied, and a new routing protocol based on AODV and multi-channel is proposed to increase the network throughput by taking advantage of multiple orthogonal channels. Finally, simulation experiments by the OPNET are conducted and the results of our proposed algorithm is compared with the standard AODV. The comparison shows that improved AODV based on our proposed algorithm is superior than the standard AODV from the aspect of increasing the network throughput, decreasing media access delay, and keeping higher packet delivery rate.