January 2006
Beginner
1120 pages
72h 31m
English
book
Handbook of Information Security, Volume 1, Key Concepts, Infrastructure, Standards, and Protocols
by Hossein Bidgoli
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Cellular Networks
Jingyuan Zhang, University of Alabama
Ivan Stojmenovic, University of Ottawa, Canada
Introduction
Basic Concepts
Multiple Access Methods
Location Management
Hand-Off Strategies and Channel Assignment
Authentication and Encryption
Evolution of Cellular Networks
Alternatives to Cellular Networks
Summary
Acknowledgments
Glossary
Cross References
References
INTRODUCTION
Cellular communications has experienced explosive growth in the past two decades. Today millions of people around the world use cellular phones. Cellular phones allow a person to make or receive a call from almost anywhere. Likewise, a person is allowed to continue the phone conversation while on the move. Cellular communications is supported by an infrastructure called a cellular network, which integrates cellular phones into the public switched telephone network.
The cellular network has gone through three generations. The first generation of cellular networks is analog in nature. To accommodate more cellular phone subscribers, digital TDMA (time division multiple access) and CDMA (code division multiple access) technologies are used in the second generation (2G) to increase the network capacity With digital technologies, digitized voice can be coded and encrypted. Therefore, the 2G cellular network is also more secure. The third generation (3G) integrates cellular phones into the Internet world by providing highspeed packet-switching data transmission in addition to circuit-switching voice transmission. ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.