Distributed Architecture with Control Scheme and Status-Aware Routing Protocol for QoS Support in MANETs

In this paper, we propose a distributed architecture to provide quality of service (QoS) for mobile Ad hoc networks (MANETs). The proposed architecture includes two major approaches: distributed control scheme and status-aware routing protocol, both of which are implemented in a fully distributed manner which do not need resources allocation or reservation at the intermediate nodes. Meanwhile, we analyze an intra-flow interference model to estimate the available bandwidth for control scheme in MANETs with the contention-based Media Access Control (MAC) layer, and explore the status of the remaining power capacity as well as the traffic load at each node to select the best reliable route. Simulation results show that the proposed architecture can significantly improve the end-to-end delay performance for real-time traffic and extend the network lifetime under different traffic load conditions.