Cooperative Data Forwarding In AODV Routing Protocol

Abstract

A Wireless sensor Network uses thousands of miniature devices that communicate among each other and sense data from the environment. The success of the communication in a WSN inherently lies in the routing protocol used by the architecture. This work enables reliable communication for Reactive Routing Protocol such as, Ad hoc On-demand Distance Vector Routing (AODV) and Dynamic Source Routing (DSR) in Wireless Sensor Networks. These protocols are on-demand routing protocols and has the capability to only detect Link Failures. This hampers the packet delivery ratio and increases the end-to-end delay. AODV Protocol when faced with a link failure condition has the source node reinitiate the route discovery phase by broadcasting Route Request Messages to its neighbours without considering the affected link. The system calls for a Reliable Reactive Routing Enhancement (R3E) as an extension over the AODV protocol. Here the nodes maintain a list of forwarding candidates and their priorities with the help of routing table enabling forwarding of data towards destination as per node priority and thereby removing the need for re-initiation of route discovery phase. Thus R3E successfully augments the aforementioned AODV protocol, thereby improving the packet delivery ratio and also achieving a significant reduction in end-to-end delay in the Wireless Sensor Network.