Link Stability Based On Qos Aware On - Demand Routing In Mobile Ad Hoc Networks

Abstract

MANET is a autonomous network where communicating entities can communicate without the aid of any downlink power controller called base stations. The wide deployment of MANET, demand for providing different quality of service (QoS) in the network has increased much. QoS routing strategy focused on routing strategy for different QoS in this dynamic network. Hence the task of QoS routing is to optimize the network resource utilization while satisfying the application requirements. Therefore there is no centralized control over links. Further the link quality varies due to mobility of nodes. Existing routing protocols like Ad hoc on demand routing protocol (AODV) or other quality of service routing have a scope of not making the changes in link quality once the path is established and cost matrix is set to zero and link quality is not taken in to consideration to select the stable paths. Therefore the performance of such system degrades with high mobility. Hence in this work we emphasis on incorporating link quality estimation based on mobility prediction of nodes incorporate same in the routing decision further new routes are accumulated and the primary transmission path is changed in case of a better route interms of link quality is obtained. In this paper we mingle the idea of link stability and cost matrix, power consumption to uncover better path interms of both stability and cost along with QoS support.