An Improved QoS and Ranking Paths for Multimedia Traffic over MANETs

Abstract

The communication quality in multi-hop networks entirely depends on the selection of a multi-hop path from source to destination among the potential candidate paths. Finding a path with good throughput in multi hop MANETS (Mobile Ad Hoc Networks) is a critical job of QoS routing. Existing approaches finds the optimal path based on the best data rates among all links. However, other measures such as energy, delay and traffic intensity also impact in determining the optimal path, especially for multimedia traffic. In this paper, we present a model for optimal routing by considering the network route parameters namely distance, bandwidth, traffic intensity, queuing delay and energy utilization of the link. We use greedy approach for selecting a path in multi hop network. Our approach is useful in analyzing the candidate route weights and selects the optimal path from source to destination. In addition to finding best route, our protocol also ranks the candidate paths that enable alternative paths when there is a failure in the current path.