COMPARATIVE STUDY OF MULTIPATH EXTENSIONS OF AODV

Tanvi sharma, Sukhvir Singh

Abstract: A mobile ad hoc network (MANET) is a multi-hop wireless network with dynamically changing topology. With the development of MANET technology, various routing protocols have been proposed over the years with minimum control overhead and network resources. AODV is the most popular routing protocol among others. It is a single path, loop free, On-demand type routing protocol and its performance is better than other routing protocols in MANET environment. However, single path abstraction is considered one of the biggest drawbacks of AODV. Also, it has more routing overhead both at the time of route discovery and route repair. In the networks with light traffic and low mobility AODV scales flawlessly to the larger networks with low bandwidth and storage overhead. But in networks with heavy traffic, a big number of routes will break resulting in repeated route discoveries and error reports in the network, which is an overhead. The mobile nodes in MANET have limited resources such as battery power, limited bandwidth which the single path protocols cannot handle efficiently. Thus routing is a vital issue in the design of a MANET. Multipath routing allows the establishment of multiple paths between a single source and single destination node. Researchers have proposed many multipath extensions of AODV protocol to establish reliable communication and ensure better load balancing than the conventional protocol. This paper reviews some multipath extensions of AODV routing protocol and a comparative study is done. There is no frontrunner of the comparison, but there are important inferences for scholars who will design new routing protocols in future.

Keywords: MANET, Multipath Extensions, Routing Protocols, AODV, AODV-BR, SMORT, AOMDV and AODVM

DOI: https://doi.org/10.15623/ijret.2013.0209075