Design and Performance Evaluation of Channel Reservation Schemes for QoS Constrained Multimedia Traffic

This paper considers the problem of contension resolution problems for high bit-rate wireless communication systems where the round trip propagation delay is relatively longer than the slot transmission time. In this scenario, we found that existing channel reservation schemes cannot guarantee the satisfaction to all users regarding different quality of service (QoS). Thus in this paper, we propose 2 new channel reservation schemes which taken into consideration priority service to more delay-sensitive multimedia traffics, namely, Partial UNI and UNI+MT schemes for multimedia traffics, an extension of our recently proposed UNI scheme for single-class traffic. The goal is to achieve the highest system performance and enable each traffic types to meet their QoS requirements. We evaluate the performance of each scheme by mathematical analysis. The numerical results show that our proposed schemes are effective in enabling different traffic users to achieve the best successful rate possible in this kind of environment.