Study on Adaptive Admission Control to Increase Connection Capacity in Mobile Networks

Abstract

Mobile WiMAX has revealed as one of the most hopeful broadband wireless access technologies due to their characteristics of large network coverage high transmission rate strong QoS assurance and inexpensive deployment cost However there are still some challenging issues to be addressed such as resource management for system capacity and user gratification Therefore we propose two admission control mechanisms in order to efficiently increase system capacity especially for multimedia transmission which ordinarily requires strict delay constrains One is adaptive admission control with consideration buffered real time stream and the other is fuzzy neural intelligent admission control In this dissertation both of the control mechanisms can admit incoming video stream connections requests even without sufficient bandwidth to meet the QoS requirement Certainly the proposed adaptive scheduler can collaborate with admission control mechanisms to make QoS provision feasible Also each real time video connection keeps its fluency of performance over dynamic wireless channel status by employing adaptive modulation and coding (AMC) scheme Finally we evaluate the concurrent stream connection number connection blocking probability and proportion of poor performance under different resource management strategies

Date of Award	2015 Jan 29
Original language	English
Supervisor	Yueh-Min Huang (Supervisor)