OPTIMIZED QUALITY OF SERVICE (QoS) ROUTING IN MOBILE ADHOC NETWORKS USING SELF-HEALING TECHNIQUES

Abstract

An adhoc network is a collection of mobile hosts dynamically forming a temporary network without the aid of any existing established infrastructure. Quality of Service (QoS) is a set of service requirements that needs to be met by the network while transporting a packet stream from a source to its destination. QoS support for Mobile Adhoc Networks (MANETs) is a challenging task due to the dynamic topology and limited resources. To support QoS in routing, information such as path length, delay, jitter and energy in the network should be available and manageable. The main objective of this paper is to enhance the QoS routing for MANETs using Temporally Ordered Routing Algorithm (TORA) with Self-Healing and Optimized Routing Techniques (SHORT). SHORT improves routing optimality by monitoring routing paths continuously and redirecting the path whenever a short-cut path is available. In this paper the performance comparison of TORA and TORA with SHORT has been analyzed using Network simulator (ns–2) for various parameters. TORA with SHORT enhances performance of TORA in terms of throughput, packet loss, end-to-end delay and energy.