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Each UE can aggregate multiple component carriers (CCs) as a wider band to support the demand of higher data rates in LTE-Advanced (LTE-A) systems with carrier aggregation (CA). An appropriate CC selection is necessary in order to improve the utility of CA, since not all CCs benefit from CA due to bad channel quality of some CCs. Most of existing methods only take one aspect of problems into account...
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...
In this paper, we described the correlations between uplink packet latency of TCP, application traffic characteristics and uplink characteristics. Our study demonstrated that the packet latency in uplink direction mainly caused by TCP setup time instead of the packet size and the bandwidth. In addition, we also found that TCP failure number varies with the configurations of PDCH in BSS.
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...
In the existing data fetching algorithms for P2P streaming systems, the peers usually fetch data independently, leading to huge inter-AS traffic (AS: autonomous system). This paper proposes CoFetch, a collaborative fetching algorithm for P2P live streaming systems to decrease inter-AS traffic. In CoFetch, to avoid that all peers fetch the same data from inter-AS connection, instead of aggressively...
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