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Satellite link speeds are now increasing in unison with those of terrestrial links. For example, the maximum link speed of WINDS (Wideband Internetworking engineering test and Demonstration Satellite) which was launched on 2008 is 1.2 Gbit/s. WINDS is expected to support applications in education, medicine including telemedicine, and disaster countermeasures. Therefore, such satellite communication...
The number of wireless Internet service users that use wireless LAN or satellite links has increased. The broadband satellite Internet services have especially attracted attention because of its characteristics such as global coverage and robustness. TCP (transmission control protocol) is used by many typical applications over satellite Internet. However, a typical TCP (such as TCP-NewReno) which...
In this paper, we analyze the network structure of two SNSs, academic community system (ACS) and Amippy. From the viewpoint of network topology, the major characteristics of these data sets can be summarized as follows: low average shortest-path length, high clustering coefficient, presence of a power law degree distribution and negative assortativity. Based on our analysis, we propose a growth model...
The important communications or real time applications over IP networks such as the Internet have received considerable attention over recent years. However, it is very difficult for the standard TCP to maintain QoS (i.e. bandwidth) which is demanded by important communications or real time applications, when multiple TCP connections share the bandwidth of a bottleneck link. Thus, it is useful for...
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