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Traffic modeling contributes remarkably to network design and performance evaluation in wireless networks. Various traffic models have been proposed for wireless networks thus far.. In order to provide a better understanding in this area, the article presents a detailed investigation to current studies of traffic models in different wireless networks. And then the origins of model differences are...
In wireless personal area networks (WPANs), a successful design of scheduling scheme is critical for video traffic in QoS guarantee and efficient channel resource utilization. In this paper, we propose a novel cross-layer scheduling scheme for MPEG traffic in high speed WPANs. The scheme aims at introducing robust improvements to MPEG traffic scheduling by taking most advantages of traffic characteristic...
Applications over HTTP are expected to play its persistently important role in the future heterogeneous networks. The purpose of this study is to analyze emerging characteristics of HTTP traffic which has dramatically changed both in payload and transfer method in the past few years. Beginning with a discussion of well-known models in literature, we emphasize on their applicability in the future networks...
Research finds within the last decade on network measurement have shown the classical assumption of exponentially decaying service distributions does not apply in a number of sources - Ethernet, ISDN, CCSN and VBR video. Recent research has shown that self-similar nature of traffic still exists in the traffic of wireless networks. Appropriate service distribution of these sources may be heavy-tailed...
Call admission control (CAC) is a key factor in quality of service (QoS) provisioning for multimedia service in modern network. Lots of CAC schemes aim to satisfy QoS requirement and upgrade network utilization, but they ignore the fairness principle in network. Directly and simply using these schemes, it will appear the phenomenon that the narrow band calls block the broad band calls. The common...
Modern network is expected to support multimedia traffic, therefore how to guarantee the QoS of multimedia network is the emerging technology. CAC (call admission control) plays an important role in the QoS guarantee of multimedia network. Noticing that many CAC schemes aim to satisfying QoS requirement and upgrading network utilization, but they ignore the fairness principle in network. Directly...
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