A Predictive Route Maintenance Protocol Based on Signal Strength for Dense Ad Hoc Networks

Abstract

Abstract-Ad hoc wireless networks consist of mobile network without base stations, and are characterized by a host in a highly dynamic network topology. The topology changes frequently due to host migration, signal interference and power outages, making the route maintenance a challenging consideration in designing routing protocols. Most of the existing protocols perform an end-to-end route discovery to establish a new connection for the communication during link 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 a node that is likely to cause link error, as a preventive measure, hands off routing information to a new node by monitoring the signal strength of the received signals. 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.Index Terms-Dense MANETs, RSSI, link stability, apriori maintenance.

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