Bandwidth allocation strategies for wireless ATM networks using predictive reservation

Abstract

In future wireless networks such as the wireless ATM networks, it is important to guarantee quality-of-service (QOS) for mobile terminals. However, guaranteeing QOS while ensuring high bandwidth utilization is difficult because of the unpredictable nature of the terminal mobility pattern. We propose a new scheme to improve the QOS of wireless ATM networks by using predictive reservation of bandwidth from mobility patterns dynamically. Simulation results show that under heavy load conditions, our proposed scheme will reduce the hand-off dropping probabilities by a significant amount while resulting in only a small increase in the blocking probabilities and a minimal sacrifice in bandwidth utilization.