| Wireless networks have penetrated almost a billion subscribers worldwide with first and second generation mobile networks. The main service was voice, and more recently modem-based low-rate data services. Because of the voiceoriented traffic and circuit-switching technology, these networks are dimensioned and designed using the traditional traffic theory in telecommunications. Their design is based on high-cost centralized switching and signaling equipment and base stations as wireless access points. Another technology dominated the world in the wired local telecommunication networks: IP technology. The transparency of the Internet Protocol (IP) to different traffic types and low-cost switching equipment made it very attractive to operators and customers.
The third generation (3G) of mobile networks introduces wide spectrum and high data rates as well as variety of circuit-switched and packet-based services. It provides IP connectivity besides the circuit switching. Future generation mobile systems are expected to include heterogeneous access technologies, such as wireless LAN and 3G, as well as end-to-end IP connectivity (i.e., an all-IP network). The diversity of traffic services and access technologies creates new possibilities for both operators and users. On the other hand, it raises new traffic and design issues.
This book provides traffic analysis, dimensioning, quality of service (QoS), and design aspects for wireless IP networks with multiple traffic classes. |
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| | Absolute BSD: The Ultimate Guide to FreeBSD Welcome to Absolute BSD! This book is a one-stop shop for new UNIX administrators who want to build, configure, and manage dedicated FreeBSD servers. It will also be useful for those folks who want to run FreeBSD on their desktop or combined desktop/server systems. By the time you finish this book, you... | | Learning C#With Learning C#, best-selling author Jesse Liberty will help you build a solid foundation in .NET and show how to apply your skills by using dozens of tested examples. You will learn how to develop various kinds of applications--including those that work with databases--and web services. Whether you have a... |
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