Performance Comparison of Multicast Routing Protocols under Variable Bit Rate Scenario for Mobile Adhoc Networks

An ad hoc network is formed by wireless mobile nodes (hosts) that
operate as terminals as well as routers in the network, without any centralized
administration. Mobile ad hoc networks (MANETs) are characterized by lack
of any fixed network infrastructure. In a MANET, there is no distinction
between a host and a router, since all nodes can be sources as well as
forwarders of traffic. Moreover, all MANET components can be mobile.
MANETs differ from traditional, fixed-infrastructure mobile networks;
MANETs require fundamental changes to conventional routing and packet
forwarding protocols for both unicast and multicast communication. Wireless
ad-hoc networks have gained a lot of importance in wireless
communications. Wireless communication is established by nodes acting as
routers and transferring packets from one to another in ad-hoc networks.
Routing in these networks is highly complex due to moving nodes and hence
many protocols have been developed. This Paper thesis concentrate mainly on
routing protocols and their functionality in Ad-hoc networks with a Variable
Bit Rate (VBR) discussion being made on four selected protocols MAODV,
ADMRP, ODMRP and ABAM, ending with their comparison.