Design and Performance Analysis of Proxy Discovery Routing in Mobile Ad Hoc Networks

An adhoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. Due to the limitations in the wireless environment, it may be necessary for one mobile host to enlist the aid of other hosts in forwarding a packet to its destination. Thus, multiple networks "hops " may be needed for one node to exchange data with another across the network. To accomplish this communication, a routing protocol is used to discover routes between these nodes. The majority of existing ad hoc network routing protocols has a tendency to use the shortest single path from a source to a destination. However, in constantly changing topologies such as those in mobile ad hoc wireless networks, the shortest single path is unreliable for reachability. In order to improve routing performance, the congestion must first be relieved as much as possible and the routing path be made available at all times. The proxy based indirect routing is used to control network traffic congestion and refine route availability by coping with unreliable links quickly. It acting as a proactive routing protocol, utilizes additional information about the neighbours shared by the sender and the receiver to find an alternative for the original path with unreliable links. It leads to a much improved system performance in terms of packet delivery ratio, average end-to-end packet delay, and network reliability.