Fault tolerance based routing approach for WMN

Today, Wireless Mesh Networks has been recognized as a new attractive communication paradigm due to their ease of deployment and ability of fault tolerance. WMN is a multi-hop wireless network which builds high performance infrastructure and provides efficient communication using various Routing Protocols. Traditional routing protocols like AODV, DSR and DSDV etc. support Ad-hoc networking in which devices doesn´t have capability to provide fault tolerance. To overcome this, several types of Opportunistic based routing protocols have been proposed i.e. EXOR, SOAR etc. which support combination of both Ad-hoc and Mesh networking. Both EXOR and SOAR exploit the broadcast nature and provide the capability of fault tolerance using multiple alternate paths and redundant copies of data packets. However, these proposed approaches have some disadvantages. To overcome this, we have proposed Fault Tolerance Based Routing (FTR) approach which adopts the concept of minimum spanning tree that provides minimum cost path for reliable packet transmission. Further, we have shown the comparative performance analysis of FTR over previously proposed approaches i.e. EXOR and SOAR using various network parameters i.e. network throughput, robustness (against node/link failure), hop count, packet size, bandwidth consumption and traffic congestion for multiple different nodes network.