Reliable communication for MANETS in military through identification and removal of byzantine faults

Abstract

A MANETS (Mobile Ad Hoc Networks) is a spontaneous network that can be established without any infrastructure. Problems are faced while setting up and using a MANET which is both reliable and secure. Transmitting message over multiple paths will increase the security and reliability of transmission in an open collaborative MANET environment where any node can maliciously or selfishly disrupt and deny communication of other nodes. An SMT protocol [1] provides a way to secure message transmission by dispersing the message among several paths with minimal redundancy. The multiple routes selected are known as APS — Active Path Set. An improved way of secured and reliable communication in military using MANETS is presented in this work. This work is towards improving the security of the message transmission among multiple routes by including the most reliable routes in the active path sets through the identification and removal of Byzantine Faults. The route discovery process with binary search probing technique is resilient to Byzantine failures caused by individual or colluding nodes. Malicious links are detected and these links are then avoided by multiplicatively increasing their weights. The fault detection algorithm bounds logarithmically (log n — n the number of nodes in the path), so the delay is reduced drastically. The simulated implementation of the work clearly shows 16 percent increase in average throughput.