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Chapter 4 171
Functionality/Operation
GPRS Overview
4. Functionality /
Operation
GPRS Overview
This section summarizes the functional features of the General Packet Radio
Service, or GPRS, for the Test Set installed with Option 040.
Difference from HSCSD
A single user can establish a call on more than one timeslot for the data transfer
using a GSM data service called HSCSD, or High Speed Circuit Switched Data.
GPRS is an overlay for the current GSM system that requires only software and a
couple of new network components to work, and it allows users to transmit and
receive over more than one channel. Both schemes can achieve similar data
transfer rates, but the fundamental differences to move data are as follows:
GPRS: Uses packet switching that transfers data in little chunks over
several virtual connections.
Applies only a loose relationship between the same number
uplink and downlink timeslot, and allows multiple users to share
a single timeslot.
HSCSD: Uses circuit switching that transfers data in a single big block
over a dedicated point-to-point connection.
GPRS Network Topology
Focusing on one of the base transmission stations among other GPRS network the
typical functional structure is illustrated as follows:
Abbreviations in the illustration:
BSC: Base Station Controller
CSPDN: Circuit Switched Public Data Network
GGSN: Gateway GPRS Support Node
MSC: Mobile-services Switching Center
PLMN: Public Land Mobile Network
- Agilent Technologies 2
- E6392B GSM MS Test Set 2
- User’s Guide 2
- Manual Part Number 3
- E6392-90051 3
- Information 4
- ACOUSTIC NOISE EMISSION 7
- GERXUSCHEMISSION 7
- Contents 10
- 1 Preparing for Use 14
- Major Functions 15
- 16 Chapter 1 17
- Preparing for Use 17
- Installing the Test Set 18
- Power Cable 19
- Chapter 1 19 20
- 1. Preparing for Use 20
- Line Settings 21
- Environment 21
- Replacing the Line Power Fuse 22
- Warm-Up Time 22
- Preparation for Each Test 23
- UUT Connections 24
- Entering Attenuations 25
- Troubleshooting 26
- 26 Chapter 1 27
- 2 Using Functions 28
- 28 Chapter 2 29
- Using Functions 29
- Chapter 2 29 30
- 2. Using Functions 30
- 30 Chapter 2 31
- Chapter 2 31 32
- 32 Chapter 2 33
- Chapter 2 33 34
- 34 Chapter 2 35
- Chapter 2 35 36
- 36 Chapter 2 37
- Chapter 2 37 38
- 38 Chapter 2 39
- Chapter 2 39 40
- 40 Chapter 2 41
- Chapter 2 41 42
- 42 Chapter 2 43
- Chapter 2 43 44
- 44 Chapter 2 45
- Chapter 2 45 46
- 46 Chapter 2 47
- Chapter 2 47 48
- 48 Chapter 2 49
- Chapter 2 49 50
- 50 Chapter 2 51
- 3 Screen Reference 52
- General Operation Guide 53
- Chapter 3 53 54
- Rear Panel Overview 55
- Display Annotation 56
- Screen Flow Chart 57
- Figure 3-5 Screen Flow Chart 58
- Option 002 58
- Option 040 58
- 58 Chapter 3 59
- Storing Two Numeric Values 60
- Recalling the Numeric Values 61
- Variable Increment Softkey 61
- Initial Screen 62
- 62 Chapter 3 63
- AUTOMATIC TEST 64
- 64 Chapter 3 65
- Talk Measuring Screen 70
- Aborted Screen 72
- Pass/Fail Screen 74
- Pass/Fail Screen Examples 76
- 76 Chapter 3 77
- Chapter 3 77 78
- 78 Chapter 3 79
- Pass/Fail: DC Current 80
- Measurement Mode Selection 81
- Test SIM 81
- Chapter 3 87 88
- Talk/RF Test Measuring Screen 89
- Chapter 3 89 90
- Chapter 3 91 92
- 92 Chapter 3 93
- Chapter 3 93 94
- Softkey Menu 3 95
- Chapter 3 95 96
- Chapter 3 97 98
- Chapter 3 99 100
- Screen Reference 100
- 3. Screen Reference 100
- Screen Fields 101
- 102 Chapter 3 103
- Stand-by Screen 104
- Explanation 107
- Measuring Screen 108
- Measuring Screen Examples 109
- Chapter 3 109 110
- 110 Chapter 3 111
- Chapter 3 111 112
- 112 Chapter 3 113
- Measuring: DC Current 114
- Measuring: Spectrum Monitor 115
- Chapter 3 115 116
- MANUAL TEST (GPRS Mode) 119
- Idle Screen 124
- Attached Screen 125
- CONTROL knob 126
- Chapter 3 127 128
- 128 Chapter 3 129
- Chapter 3 129 130
- 130 Chapter 3 131
- Chapter 3 133 134
- SPECTRUM MONITOR 137
- Measuring Screens 141
- Chapter 3 141 142
- 142 Chapter 3 143
- SIGNAL GENERATOR 144
- CONFIGURATION 146
- 148 Chapter 3 149
- Chapter 3 153 154
- Automatic Test Flow 155
- Creating Instruction Messages 159
- Chapter 3 159 160
- File Management 161
- Saving a Test Setup File 162
- 162 Chapter 3 163
- Recalling a Test Setup File 164
- 164 Chapter 3 165
- How to Update the Firmware 166
- 166 Chapter 3 167
- 4 Functionality/Operation 168
- GSM Mobile Block Diagram 169
- GSM Measurements Selection 170
- 170 Chapter 4 171
- Functionality/Operation 171
- −50 to −90 dBm) 171
- −102 dBm) 171
- GPRS Overview 172
- 172 Chapter 4 173
- 5 Specifications 174
- General Information 175
- RF Input/Output 176
- RF Signal Generator 176
- RF Analyzer 177
- Spectrum Monitor 178
- DC Power Supply 179
- DC Current Measurement 179
- Memory Card 179
- GPRS Test (Option 040) 181
- Rear Panel 182
- General Specifications 183
- A. General Information 184
- The GSM System 185
- Power Control Levels 186
- RX Level 187
- RX Quality 188
- Limits for BER and FER 188
- Limits for Frequency Error 188
- 188 Appendix A 189
- B. Input Fields and 190
- Allowable Ranges 190
- 192 Appendix B 193
- Appendix B 193 194
- 194 Appendix B 195
- C Manual Changes 196
- Introduction 197
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