UM
Quality of Service and call admission control for adaptive multimedia services in wireless/mobile networks
Xiao Yang; Chen C.L.Philip; Wang Yan
2000-12-01
Source PublicationNational Aerospace and Electronics Conference, Proceedings of the IEEE
Volume1
Pages214-220
AbstractMultimedia services with Quality of Service (QoS) have become very demanded in wireless/mobile networks. Call admission control (CAC) is vital for these services partially due to the network's limited capacity. In this paper, we propose a call admission control framework for adaptive multimedia services in a wireless/mobile network, where the bandwidth of an ongoing call is time-varying during its lifetime. A call is degraded if the assigned bandwidth is below its request bandwidth. We introduce a new QoS parameter: degraded area size (DAS). It stands for the normalized mean product of the proportion of a call's degraded time and the degree of degradation. Based on DAS, we present a CAC model to show how to guarantee DAS. We also introduce a bandwidth reallocation algorithm to adjust calls' bandwidth in a cell. Simulation results are compared with those from non - adaptive multimedia services and show that the performance of our method is better.
URLView the original
Language英語
Fulltext Access
Document TypeConference paper
CollectionUniversity of Macau
AffiliationWright State University
Recommended Citation
GB/T 7714
Xiao Yang,Chen C.L.Philip,Wang Yan. Quality of Service and call admission control for adaptive multimedia services in wireless/mobile networks[C],2000:214-220.
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