DOI: 10.5176/978-981-08-7656-2_NTC2010-29
Authors: Sharmila Sankar and Dr. V. Sanakaranarayanan
Abstract:
On-demand routing protocol is an important category of the current ad-hoc routing protocols, in which a route between a communicating node pair is discovered only on demand. However, due to the dynamic and mobile nature of the nodes, intermediate nodes in the route tend to lose connection with each other during the communication process. When this occurs, most of the existing protocols perform an end-to-end route discovery to establish a new connection for the communication. Most of the protocol ad hoc routing algorithms initiate route discovery only after path breaks. Such route repair mechanism causes high control overhead and long packet delay in a dense network. In this paper, we propose an enhanced proactive route maintenance protocol, where in a node that is likely to cause link error, as a preventive measure, hands off routing information to a suitably situated node. The proposed protocol aims to reduce the probability of route breakage and hence reduces the control overhead and latency, and increases the packet delivery ratio. Through simulation, we show that the proposed protocol is simple, robust and effective.
Keywords: Aprioiri Handoff, PRP, Signal Strength, HELP, Bridge node
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