A global message network employing low Earth-orbiting satellites (original) (raw)
Related papers
To provide ubiquitous terrestrial Internet coverage mobility and Internet-based access to data generated by satellites, there is a strong desire to integrate the terrestrial Internet and satellite networks. This requires satellites that are based on IP for communications. Rotation of low Earth orbit satellites around the Earth results in communicating with different ground stations over time, and requires mobility management protocols for seamless communication between the Internet and satellite networks. In this article we provide a comprehensive summary and comparison of state-of-the-art research on mobility management schemes for satellite networks. The schemes are based on network and transport layers for managing host and network mobility. This article clearly indicates the aspects that need further research and which mobility management schemes are the best candidates for satellite networks.
Satellite Communication Systems
1999
atni " '4.riu' * o. the problem is currently available. Several recent efforts have been directed towards the evaluation of performance as measured by the end-to-end symbol error probability '-asing Monte-Carlo simulations. These simulations require excessively large sample sizes and are not practical for estimating low values of error probabilities. j n this report, the investigators present a technique for reducing the sample size requirerea ts of Nonte-Carlo simulation of satellite communication links. The method is based on * a combination of a modified (importance) sampling technique and an extrapolation technique. Sample size reduction of the order of 100 appears to be possible with this techniqu.
1997
Within the next few years the emergence of satellite-based personal communication networks operating from small low earth orbits to geostationary orbits offers viable solutions for contacts between two points on Earth. The idea is to use the same networks for communications links between small satellites and their ground stations. Will it be possible to call a satellite from a PC, e.g., like an answering machine from a phone? The paper presents concepts for the transfer of data between ground stations and low Earth orbiting small (scientific) satellites via a) commercial satellite-based communication networks, e.g. IRIDIUM, ORBCOMM, GLOBAL STAR, SIGNAL and b) geostationary communication satellites, e.g. INMARSAT. The potentialities which lie in these concepts will be discussed. Operational and technical constraints will be pointed out. The results are the outputs of a study sponsored by the German Space Agency DARA to analyze the potential of cost reduction in mission operations for small satellites as part of its effort to reduce the overall mission cost.
A Survey Paper on Security Issues in Satellite Communication Network infrastructure
Satellite communication is one of the most popular next generation communication technologies for global communication networks in parallel to terrestrial communication networks. In modern age military intelligence, navigation & positioning, weather forecasting, digital video Broadcasting (DVB), and broadband internet services, are the few demanding applications of Satellite communication. Although Satellite communication is cost effective solution for such long distance communication application, However security over the link is still a major concern in satellite communication. Due to limitations such as high bit error rate, power control, large distance between end nodes, high link delays because of large round trip times, and link availability, common security techniques incorporate a lot of issues in implementation of proper secure communication over the satellite links. In this survey paper, we explore the importance of security, trivial and currently deployed security tools, and the limitations to be considered while deploying such security techniques and protocols for securing satellite communication. Finally we reported some future research space in process to further optimize the security tools and measures for the proper security frame work over the satellite communication infrastructure.
Enhancing transport layer in satellite systems
IET Conference Publications, 2009
The ever growing use of Internet applications (e.g., email, file transfer, remote access and web browsing) is causing progressive congestion of telecommunication networks.
Satellite Communication Engineering
Satellite Communication Engineering, 2002
This book is dedicated to my families in Australia and Nigeria for their belief in and support for me. The joy of family is divine. For this I am eternally blessed and grateful.