Penalty-based adaptable reservation: a universal QoS differentiation mechanism for the next-generation Internet and wireless networks

In this paper, we investigate on penalty-based adaptable reservation admission (PARA) as an effective tool for quality of service (QoS) differentiation at the network layer and MAC layer. PARA enables resource reservation, allocation, and admission control to be adaptive to traffic conditions and the stress conditions at individual nodes. It also facilitates efficient differentiation between the service quality for applications with different QoS requirements, leading to an effective tool for DiffServ. Such capabilities are particularly useful for wireless networks and the Internet, resolving the QoS guarantee issues in the presence of mobility and bursty traffic. An important advantage and unique characteristic of PARA is that such differentiated service provisioning is under the control of network operators or individual nodes, in contrast to previous approaches in QoS adaptation. Our analytical results show that PARA can achieve considerably lower blocking rates for high-priority traffic as compared to previous resource management schemes without PARA.