A LIGHT-WEIGHT TRUST AWARE ROUTING PROTOCOL FOR WIRELESS SENSOR NETWORK

Abstract

The interest of research community has significantly increased in wireless sensor networks during last few years due to low-cost solutions for wide range of applications. Most of the times sensor nodes in WSN operate unsupervised which exposes them to variety of security threats, particularly node misbehavior attacks. Therefore, secure data dissemination becomes a challenging task due to unpredictable behavior of nodes. Most of the trust aware routing protocols exclusively focus on identification and isolation of misbehaving nodes over multihop path. However, these schemes do not optimize the route formation by considering important characteristics like path length and energy resources. As a result, these existing schemes exhibits compromised route stability and network lifetime. This paper presents a light-weight trust aware routing protocol that dynamically detects and isolate misbehaving nodes and paves the way for trusted environment. Proposed LTRP scheme employs a multi-facet routing metric integrating node’s trust, energy and hop counts for making routing decisions. Simulation based performance evaluation reveals improved network lifetime, throughput, delay, and routing load performance of LTRP when compared to state-of-art.