Wiley - GPRS and 3G Wireless Applications - Professional Developer Guide

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Introduction xv
Part One The Mobile Networks 1
Chapter 1 Basic Concepts 3
How a Mobile Phone System Works 3
Architecture 4
Concepts and Terminology 8
Separating Users from Each Other 9
Separating Sending and Receiving Traffic 9
Defining Concepts 10
Summary 11
Chapter 2 The Mobile Evolution 13
Mobile Phone History 13
Mobile Systems Now and in the Future 17
GSM Evolution 18
TDMA (IS-136) Evolution 20
cdmaOne Evolution 21
PDC Evolution 22
WAP, Bluetooth, and Other Related Evolutions 23
Page viii
The Mobile Internet 23
Mobitex and Palm.net 24
I-Mode 25
What Makes the Mobile Internet Take Off? 26
Summary 27
Chapter 3 GPRS–Wireless Packet Data 29
The Need for Packet Data 29
Key Features of GPRS and Packet Data Networks 32
The Always Online Feature 32
An Upgrade to Existing Networks 34
An Integral Part of Future 3G Systems 35
GPRS Network Architecture 35
GPRS Handsets 39
The R-Reference Point Interface 41
Accessing Lower Layers with AT Commands 42
Attaching to the Network 44
Attaching to the Network and Getting an IP Address 45
Mobility Management 47
Communicating with a GPRS User 49
Speed, Capacity, and Other End-User Aspects 50
Charging for Packet Data 51
The Future of GPRS 53
Summary 53
Chapter 4 3G Wireless Systems 55
What Is 3G? 55
Key Features of All 3G Systems 57
Higher Bit Rates 57
QoS 58
Bit Rates Dependent on Distance 58
Layered Open Architecture 59
New Spectrum? 60
System Description: EDGE 61
System Description: 3G CDMA Systems 65
Three Modes of CDMA for 3G 65
Features That Are Common to All 3G CDMA Systems 67
WCDMA-Specific Features 70
Features That Are Specific to cdma2000 75
Which 3G System Is the Best? 78
Future Applications and Enhancing Applications for 3G?
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liaoliao

nice book!
make a mark to download it later