A Novel, Secure and Reliable Routing Scheme to Alleviate Bad Nodes in Mobile Ad Hoc Networks

COMPUTER ENGINEERING

In a MANET, Node misbehavior is any such behaviour that proves harmful to co-operative environment of MANET. Many schemes have been recently proposed for the detection and avoidance of misbehavior nodes, but these suffer from many problems like false detection due to network layer factors, receiver collision, power controlled misbehavior and collusion. To mitigate this problem of routing layer misbehavior, various existing misbehavior detection schemes have been analyzed and a novel routing scheme is proposed herewith that aims at finding secure and reliable paths for data packets before transmitting them over the same. Since paths are verified for security and reliability at the beginning of data transmission, hence probability of packet loss misbehavior is minimum. In the proposed multi path routing scheme, two types of control packets viz. TPI and PFI control packets are used to detect and avoid misbehaving nodes. Here, false detection due to congestion, transmitted power level, collision, and buffer overflow is avoided. Also it eliminates reliability index mechanism, unnecessary promiscuous overhearing, and redundancy. Hence network throughput is optimized in terms of reliability, security, processor and energy consumption as well as end to end delay.

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