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一本有关卫星网络的书
Satellite Networking Principles and Protocols |  | 收藏 | | | 作者 | Sun Zhilin | | ＩＳＢＮ | ISBN-13 978-0-470-87 | | 出版日期/版本 | 2005 | | 格式 | ＰＤＦ Adobe Acrobat |
主题内容 | | Satellite has played an important role in telephony communication and TV broadcasting
services since the birth of telecommunication satellites. It is less known that satellite also
plays an important role in broadband and Internet services and will continue to play an
important role in the future generation networks. This is due to the satellite characteristics
that make a niche position for satellites in the global network infrastructure (GNI).
Satellite networking is a special and important topic together with other networking
technologies in recent years. Due to the nature of satellite links (long propagation delay,
relative high bit error rate and limited bandwidth in comparison with terrestrial links,
particularly optical links), some standard network protocols do not perform well and have
to be adapted to support efficient connection over satellite. Satellite orbit directly affects the
link characteristics and has a significant impact in satellite network design.
It is the ultimate goal of satellite networking to support the many different applications and
services available in terrestrial networks. These applications and services generate different
types of traffic having different requirements in terms of network resources and quality
of service (QoS), particularly the recent development of integration of telecommunication,
broadcast and computer networks and integration of telephone, TV, computer and global
positioning system (GPS) terminals.
Satellite networking has evolved significantly since the first telecommunications satellite,
from telephone and broadcast to broadband and Internet networks. It has adapted during the
advancement for ISDN, ATM, Internet, digital broadcast, etc. The evolution has also been
reflected in research and development, including the recent studies of onboard processing,
onboard switching and onboard IP routing. There are also new developments and new issues
in satellite networking such as resource management, security and quality of service, new
services and applications including VoIP, multicast, video conference, DVB-S, DVB-RCS
and IPv6 over satellite. There are always many practical constraints, such as cost, complexity,
technologies and efficiency of space and ground segments in design, implementation and
operation. Often trade-offs have to be made to achieve an optimal solution.
The technology development has stabilised and matured in satellite communication systems
so that satellite networks can be addressed as an integral part of GNI rather than as a
complicated system itself. Therefore, it is also a good time to publish a book to cover all
these important and relevant developments.
This book is written based on my lecture notes and teaching experiences on the MSc in
satellite communications, MSc in communications and software, BEng and MEng in electronic
engineering, and industrial short courses in satellite communication, at the University
xxviii Preface
of Surrey, and the MSc in computer and communications networks, at the Institute of
National Telecommunications (INT), France. Therefore the book is intended to be written for
MSc courses and undergraduate final stage in the areas related to satellite communications
and networks.
The book also takes information from publications in international conference and journals
produced by the research group and research community in general, from reports of
a large number of research projects funded by the European Framework Programmes, UK
Research Council and European Space Agency (ESA) and industries, and from PhD theses.
Therefore, the book is also intended as a reference book for research students, professional
engineers, satellite equipment manufacturers, satellite operators, telecom and network
operators, network designers and Internet service providers.
This book covers satellite networking as a separate discipline, as well as an integrated part
of the global network infrastructure. Unlike traditional satellite books, its emphasis is more
on network aspects, network services and applications, and network principles and protocols,
awareness of the characteristics of satellite networks and internetworking between the satellite
and terrestrial networks. This book covers these topics with the following unique features by:
• Providing a balanced introduction of the principles and protocols of satellite communications
networks, telecommunications networks, broadband networks and Internet networks
to bridge the gaps between satellite and terrestrial networks.
• Following the time lines of technology development from analogue, to digital networks
and to packet networks.
• Covering the developments of three major protocol reference models: ISO open systems
interconnection (OSI), ITU-T asynchronous transfer mode (ATM) and IETF Internet
protocol (IP) reference models.
• Focusing on satellite specific issues on networking QoS, security, performance and internetworking
with terrestrial networks.
• Following the layering principle of network protocols and addressing the network issues
from physical layer and link layer, to network and transport layer, and finally to application
layers in the context of both satellite networks and terrestrial networks.
• Discussing the evolutionary development of PDH over satellite, SDH over satellite,
N-ISDN over satellite, ATM and B-ISDN over satellite.
• Covering in-depth the developments of recent years on Internet protocol (IP) over satellite,
IP multicast, TCP enhancement over satellite, VoIP and DVB over satellite (DVB-S
and DVB-RCS) from different viewpoints including satellite centric, network centric and
protocol centric.
• Providing insightful discussions on new services and applications, traffic modelling and
traffic engineering, MPLS and QoS provisions.
• Introducing IPv6 and IPv6 over satellite using tunnelling and translation techniques,
and important issues in the future development and convergence of satellite networking
towards the next generation Internet (NGI).
The different views of the global networks reflect the logic behind this book. This will
help with understanding the seamless integration between satellite and terrestrial networks
and to achieve a common understanding of different network protocols and technologies,
Preface xxix
and the importance of pushing the complications to the network edges and services and
applications into the end systems (client and server).
Any new book is an experiment, and this is certainly true here. Due to the limitation
of my knowledge, continuous development of the technologies, the limited time and space
available for the book, I may not be able to cover all the important topics in detail. The
importance of fundamental concepts and principles for satellite networking and the role
satellite plays in the GNI can never be overemphasised. Readers who wish to gain further
details on some of the relevant topics from books written by other well-known authors are
directed to the further reading sections at the end of each chapter.
As an extra resource for lecturers and instructors, this book has a companion website
where a solutions manual and electronic versions of the figures are available. Please go to
www.wiley.com/go/sun.
It is my first time of writing a complete book in a short period with full academic teaching
and research duties; it is inevitable that I may have made mistakes of different types. I
welcome feedback and comments from all the readers, but am especially keen to receive
the following information: (1) any factual error in citation, attribution or interpretation;
(2) recommendations concerning topics to include or delete; (3) how this book can best
be used in academic and professional training courses as a text book or reference; and
(4) information concerning tables, figures, equations, derivations, or ways of presentation
and organisation would also be useful. |
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