A QUALITY OF SERVICE ARCHITECTURE FOR RESOURCE PROVISIONING AND RATE CONTROL IN MOBILE AD HOC NETWORKS

Prioritized flow control is a type of QoS provisioning in which each class is provided a different QoS by assigning priority to one class over another in terms of allocating resources. It is an effective means to provide service differentiation to different class of service in mobile ad hoc networks. So the objective is to achieve a desired level of service to high-priority flows so that the wireless medium is completely utilized using adaptive rate control. In this paper, we propose to design QoS architecture for Bandwidth Management and Rate Control in MANET. Our proposed QoS architecture contains an adaptive bandwidth management technique which measures the available bandwidth at each node in real-time and it is then propagated on demand by the QoS routing protocol. The source nodes perform call admission control for different priority of flows based on the bandwidth information provided by the QoS routing. The network bandwidth utilization is monitored continuously and network congestion is detected in advance. Then a rate control mechanism is used to regulate best-effort traffic.