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In this paper, we analyzed TCP performance in UWB WPAN by establishing UWB test-bed. Impact of asymmetry between forward link and reverse link was concerned. Furthermore, we analyzed relationship between TCP throughput and reverse link bandwidth. Our study demonstrated that available resource of reverse link impacts TCP performance seriously. In addition, it was found that there is an optimal reverse...
3G mobile communication networks such as UMTS provide wide area Web access. However, Web latency is usually beyond users' tolerable waiting time even in wired networks. In UMTS networks, mainly due to large RTTs and limitations of existing HTTP, Web latency increases dramatically. In this paper, we introduce a Web acceleration scheme, proxy-based object packaging and compression (POPC), for reducing...
In this study, feasibilities of HTTP specific acceleration and TCP optimization in mobile network are analyzed through comparisons. Based on these analyses, practicable accelerator architectures for Web latency reduction are presented. Furthermore, we proposed that a boost in performance is feasible by either deploying cooperative proxies with concurrent connection or combining the characteristics...
In this paper, we described the correlations between uplink TCP packet latency, behavior of TCP and behavior of application. Pearson product moment correlation analysis and partial correlation analysis are worked out to characterize correlations between five user perceived parameters. Our study demonstrated that the packet latency in uplink direction mainly caused by TCP setup time instead of the...
In this paper, we described the correlations between user perceived Web response time and the asymmetrical link characteristics. Our study demonstrated that the HTTP compression strongly affects the Web response time when uplink resources are limited. The constraints on uplink degrade Web performance seriously. In addition, we also found that it is possible to reduce Web response time through cross...
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...
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