Performance analysis of the impact of broadcast mechanisms in AODV, DSR and DSDV

Mobile Ad hoc Network (MANET) is a collection of wireless mobile devices such as laptops, handheld digital devices, personal digital assistants and wearable computers forming a temporary network without the aid of any infrastructure or centralized administration. In MANET, the task of routing is distributed among network nodes which act as both end points and routers in a wireless multi-hop network environment. To discover a route to a specific destination node, existing on-demand routing protocols employ a broadcast scheme referred to as simple flooding. Broadcasting is a means of diffusing a control message such as route request (RREQ) for route discovery in MANET environment. In on-demand routing protocols such as DSR and AODV, route request (RREQ) packets are propagated throughout the MANET to determine a route from source to destination. This paper presents the analysis of the impact of broadcast mechanism in proactive routing protocol (DSDV) and reactive routing protocols (DSR and AODV) on network performance with respect to broadcast overhead, network load, MAC load, and throughput.