Abstrakt

Expected Path Bandwidth Based Efficient Routing Mechanism in Wireless Mesh Network

K Anandkumar, D.Vijendra Babu

Wireless mesh networks (WMNs) are being developed actively and deployed widely for a variety of applications, such as public safety, environment monitoring, and citywide wireless Internet services. Considering inter- and intra-flow interference ,optimal routing in wireless mesh networks is a challenge. A new routing metric, expected path bandwidth (EPBW), where the varying link rate (due to wireless channel quality) and the dynamic link load (considering the inter- and intra-flow interference) have been considered to estimate EPBW accurately which solves the routing problem occurred due to inter- and intra-flow interference. Also based on the EPBW, a distributed routing protocol for WMNs, aiming to maximize network throughput is also proposed. The design of the same in various scenarios is done to evaluate the protocol performance extensively using NS- 2 simulation. Simulation results show that the proposed protocol and metric can substantially out-perform the state-of-the-art routing metrics, such as expected transmission count (ETX) and expected transmission time (ETT), and previous routing protocols including AODV and DSDV.