Improving Multi Cast Routing in Ad Hoc Networks using Group based Relaying

Mobile Ad Hoc Network (MANET) is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. Ad Hoc Networks have the attributes such as wireless connection, continuously changing topology, distributed operation and easy of deployment. Each node operates not only as an end system, but also as a router to forward packets. Routing in Ad Hoc Networks has been a challenging task ever since the wireless networks came into existence. The major reason for this is continue changes in network topology because of high degree of node mobility. A number of protocols have been developed to accomplish this task. Ad hoc networks are extensively used in military and civilian applications. In the paper, we address the routing problem in multi cast routing protocols for ad hoc networks. We have introduced the concept of group based relaying that works efficiently in multicast routing protocols.