Performance evaluation of routing protocols in wireless mesh networks
Department of Computer Science, North West University, Mafikeng Campus, South Africa
Wireless Mesh Networks (WMNs) are the set of wireless nodes that can communicate with each other and forwarding each other's packets. WMNs are multi-hop networks consisting of routers, gateways and mobile nodes. WMNs act as a key technology for next generation WMNs. Because of their low cost and relative ease of deployment, they are an attractive paradigm and are advantageous to other wireless networks. The aim of WMNs is to guarantee connectivity. WMNs build a multihop wireless backbone to interconnect isolated Local Area Networks and to extend backhaul access to users not within range of typical access points. This research has carried out current/existing literature in WMNs. It has analysed routing protocols such as AODV, DSR, GRP, OLSR and TORA used in WMNs where AODV and DSR are reactive routing protocols, OLSR and GRP are proactive routing protocols and TORA is a hybrid routing protocol. The routing protocols have been analysed with the performance metrics of throughput and delay under the simulation of ftp traffic. The simulator used is OPNET. With the help of OPNET, results show that in terms of ftp traffic load, TORA has very long delay. For throughput, OLSR outperforms the other routing protocols.