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Abstract
Sensor networks are an important tool for monitoring physical phenomena in the modern world. The nodes ability to communicate wirelessly removes the need for long wires and enables them to be distributed in an ad-hoc manner wherever and whenever required. One of the main challenges in these Mobile WSNs (MWSNs) is the routing protocol, which aims to transport the data generated by the sensors to the sink. A constantly changing topology means that a fixed path from a sensor to the sink cannot be guaranteed. The more demanding applications also require the consistent delivery of real-time data in highly mobile scenarios. Robust Ad-hoc Sensor Routing (RASeR) protocol is designed to be a reliable solution, even with the high frequency topology changes of a mobile network. It uses a simple hopcount gradient to allow sensor nodes to blindly forward data towards a single sink. A key issue with this type of routing is in keeping the gradient metric up to date, for this reason RASeR uses a design that combines a Global Time Division Multiple Access (GTDMA) medium access control (MAC) scheme with the routing protocol. In proposed work, the communication in Mobile Ad-Hoc Network (MANET) is based on mutual trust between the participating nodes. Due to features of open medium, dynamic changing topology, lack of centralized monitoring and management, MANETs are vulnerable to various security attacks. Hence, finding a secure and trustworthy end-to-end path in MANET is a real challenge. Our analysis shows significant improvement in packet delivery ratio of AODV in the presence of attacks, with marginal rise in control traffic Overhead.