Efficient AODV using Improved flooding with Sectorized Antenna for Mobile Adhoc Networks

Mobile Adhoc Networks (MANET) is decentralized, self configuring, wireless network of mobile devices without using any infrastructure. MANET required dynamic routing to respond to the topological changes as nodes are dynamic in nature. Dynamic routing protocol such as Adhoc on demand distance vector routing (AODV) with Expanding Ring Search (ERS) is widely used technique to reduce energy consumption and broadcast cost of searching in MANET. In AODV, network-wide flooding is initiated whenever any node wants to communicate with some other node to find the route between source and destination whereas in ERS, flooding performed in successively larger area in network. In this paper, we reduce number of transmissions by each forwarding node using sectorized antenna in high density networks. The selective flooding shows expected 35% reduction in the routing overhead during route discovery when applied to various standard regular models. Keywords— Mobile Adhoc Networks, Adhoc on Demand Distance Vector Routing, Expanding Ring Search, Directonal Antenna, Sector Antenna