ABSTRACT

Ad hoc networks are collections of mobile nodes communicating with each other using wireless media without any fixed infrastructure. During both route discovery and traversal of route-reply packets from destination to source, broadcast of packets is required which incurs huge message cost. The present article deals with the message cost reduction during transmission of route-reply from destination to source. Also the redundancy that is visible within the 2-hop neighborhood of a node is minimized during broadcasting of route-reply. This improves the average lifetime of network nodes by decreasing the possibility of network partition. The scheme of 2NI can be used with any reactive routing protocol in MANETs.

Keywords: - Ad hoc networks, Broadcast Balloon, Cost-Effective, Route-request, Route-reply, Two-hop neighborhood information.