An Adaptive Rate Control based QoS Provisioning in Mobile Ad hoc Networks
S. Venkatasubramanian · 2011
The Quality of Service in wireless Ad hoc network is the collective effect of service performance which determines the degree of satisfaction of a user of a service. QoS is achieved by the proper network traffic engineering such as traffic classes, connection admission control, using policy managers, etc.,. 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. 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 An Adaptive Rate Control based QoS Provisioning in Mobile Ad hoc Networks. 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.