Development of an efficient multicast protocol for the enhancement of reliability in transmission of data in manet's

Abstract

Mobile Ad Hoc Networks (MANETs) doesn t require any fixed Network infrastructure. Due to this reason, they became more suitable to the situations where there is no fixed infrastructure available. In this scenario, the nodes also act as router apart from executing some other network functionality. Because of these features MANETs are used in various thrust application areas in the real world like war field, natural calamities etc. Besides these advantages, Multicast environment poses challenges to the research community to explore causes for frequent failures in case of unlimited network mobility. The topology of the system is usually assumed as static by existing systems, where as it is presently dynamic and undergoes continuous reconfiguration as the mobile nodes move. Depending on the mobility scenario, this may have different impact. It becomes suitable, only if the technology supporting it embodies the mechanisms and protocols necessary to cope up with the dynamicity of this environment. At the other extreme, this defines the most radical mobility scenario, but there were no assumptions made about the dynamic topology of the systems and the networking infrastructure itself assumed to be mobile. The impact of mobility in this case is disruptive and no longer limited to the clients dwelling at the outer edge of the system, since the intermediate nodes which are in-charge of routing and other network functions are now assumed to be mobile. Moreover, most of the applicative scenarios for MANETs actually blur the distinction between end nodes and intermediate ones. Assume that, all the network nodes possess the functionality required to co-operate for enabling routing. As a consequence, networking protocols must be rethought from the ground level to accommodate the new deployment assumptions, as witnessed by the appearance of entirely new routing protocols. Apart from that, many network applications require transmitting the same single copy of data packets concurrently to many destinations.