A Local Area Network (LAN) is a network usually within a single office or building that links desktop computers with each other and with peripherals such as servers and printers. The interconnect is the electrical and functional association of two different services, often provided by different suppliers, and it is from LAN inter-connection that telecoms operators seek to profit. The application of LAN interconnection via satellite can be used to complement and extend existing terrestrial public access networks through interconnection of clusters of broadband islands (such as LANs and MANs) in remote regions, where terrestrial lines are expensive to install and operate. Examples include: Hospitals/clinics in remote and rural areas can be connected to the central hospitals in a tele-medicine environment Remote offices can be connected to the central office to facilitate tele-working University/colleges can be inter-connected to provide tele-education facilities Similarly, the possibility to provide access to such facilities in developing regions of the world is also viable and particularly attractive in the short to mid-term.
Private LAN connection facilities could also be made available to the corporate user, offering the possibility to establish broadband internet access within a closed user group. Such a scenario could be of interest to the financial sector. By gathering the knowledge and experiences of well-known satellite systems experts from different parts of Europe this comprehensive volume provides detailed analysis on technical aspects for interconnecting local area network using satellite. Starting from traffic source modelling for different types of applications and services to different types of transmission techniques and networking functions for supporting such services, different case studies are presented to analyse the performance of such technologies. By providing an insight to current and future developments in satellite communications systems and by covering a broad range of materials in technical aspects in relation to satellite communication systems technologies, this volume will be of tremendous use to researchers, academia and industry.
First book to present such a thorough description of the reliability functions of satellite systems Discusses IP over satellite Provides a unique analysis and description of different simulation tools that are under development for evaluating the performance of satellite systems Includes a chapter devoted to traffic modelling for satellite systems Reviews current research and developments in security and discusses how such security functions can be implemented over satellite networks Addresses different types of routing strategies and includes three different case studies which have been carried out to analyse the performance of different routing strategies
Preface A Note from the COST253 Chariman Acronyms Figures Tables Contributors 1. Introduction Evolution of Satellite Communications EU Initiatives in Satellite Communications Operating Frequency Technical Considerations Objectives and Activities of COST253 Outline of Contents 2. Appropriate Traffic Generators for the Simulation of Services Supported by Non-GEO Constellation Source Traffic Parameters and Descriptors Quality of Service Parameters ATM Service Categories Statistical Behaviour of Traffic Sources Influences of Traffic Characteristics Source Models Geographic Traffic Models 3. Transmission Schemes Modulation Techniques Coding Techniques Synchronisation Catching Co-Channel Interference Chapter Summary and Perspectives 4. Networking LAN Interconnection Resource Control Congestion Control Multicast Reliability Security Security Infrastructure Conclusions 5. Evaluation Tools An Overview of Network Simulators LeoSim: A Simulator for Routing GaliLEO: A Framework for Joint Expertise CONSIMTM : A Complementary Tool for Reliability AristoteLEO SEESAWS: An Ambitious Concept 6. TCP/IP Over Satellite Transmission Control Protocol The Effects of Satellite Networks on TCP Performance Simulation Analysis Fixed - Mobile Convergence Further Research and Conclusions Appendices Index