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Chapter 10, TIA/EIA-136 Basics
Basic Functions of the DCCH in TIA/EIA-136
TIA/EI
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TIA/E
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Authentication
Authentication is the same for both the ACC and the DCCH. It consists of the
base and mobile stations exchanging data. Before the mobile may access the
system, this data is verified.
Unique Challenge-Response Procedure
This is the basic procedure of Authentication. The procedure is described below.
1. Base generates a 24-bit pattern called RANDU.
2. Base sends RANDU to the mobile in the Unique Challenge Order message.
3. Mobile receives RANDU.
4. Mobile calculates AUTHU using the RANDU, MIN1, MIN2, ESN and SSD-A.
5. Mobile transmits AUTHU to the base.
6. Base calculates its own AUTHU and compares it to the received AUTHU.
7. If the two values of AUTHU are the same, the mobile is accepted into the system.
Data Used in Authentication
Several different information elements are used in authentication. The primary
ones are listed below.
•
ESN
•
MIN
•
SSD
•
RAND, the random challenge data
•
COUNT
s-p
, the Call History Parameter
ESN: Electronic Serial Number. Permanently stored in the mobile.
MIN: Mobile Identification Number. Consists of two parts, MIN1(24 bits) and
MIN2(8 bits).
SSD: Shared Secret Data. A 128-bit pattern, partitioned into two 64-bit patterns,
SSD-A and SSD-B. SSD-A is used for Authentication, and SSD-B is used for
voice privacy and message confidentiality.
RAND: Random challenge memory. A 32-bit value stored in the mobile.
COUNT
s-p
: call history parameter. A modulo-64 count stored in the mobile.
SSD Update Procedure
The base can order the mobile to update its Shared Secret Data. This is done to
enhance security.
Содержание 83206A
Страница 24: ...Contents 24 RAND_U 242 1 of N 242 ...
Страница 29: ...Contents 29 Table of Contents Glossary 291 ...
Страница 30: ...Contents 30 Index 299 ...
Страница 146: ...146 S HP83206A USRGUIDE MANUAL meas fm Chapter 4 Making Measurements WER DTC or DCCH ...
Страница 168: ...168 S HP83206A USRGUIDE MANUAL prog fm Chapter 5 Programming the Cellular Adapter FACCH and SACCH programming ...
Страница 172: ...172 S HP83206A USRGUIDE MANUAL hpib fm Chapter 6 HP IB Syntax Diagrams DCCH DCCH ...
Страница 173: ...173 Chapter 6 HP IB Syntax Diagrams DCCH HP IB Syntax Diagrams ...
Страница 174: ...174 S HP83206A USRGUIDE MANUAL hpib fm Chapter 6 HP IB Syntax Diagrams DCCH ...
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Страница 179: ...179 Chapter 6 HP IB Syntax Diagrams DCCH HP IB Syntax Diagrams ...
Страница 180: ...180 S HP83206A USRGUIDE MANUAL hpib fm Chapter 6 HP IB Syntax Diagrams DCCH ...
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Страница 189: ...189 Chapter 6 HP IB Syntax Diagrams DCCH HP IB Syntax Diagrams ...
Страница 190: ...190 S HP83206A USRGUIDE MANUAL hpib fm Chapter 6 HP IB Syntax Diagrams DCCH ...
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Страница 194: ...194 S HP83206A USRGUIDE MANUAL hpib fm Chapter 6 HP IB Syntax Diagrams Meas ...
Страница 195: ...195 Chapter 6 HP IB Syntax Diagrams Meas HP IB Syntax Diagrams ...
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Страница 199: ...199 Chapter 6 HP IB Syntax Diagrams Integer Number Setting Syntax HP IB Syntax Diagrams Integer Number Setting Syntax ...
Страница 203: ...203 Chapter 6 HP IB Syntax Diagrams Number Measurement Syntax HP IB Syntax Diagrams ...
Страница 264: ...264 S HP83206A USRGUIDE MANUAL trblesht fm Chapter 9 Troubleshooting Messages ...
Страница 284: ...284 S HP83206A USRGUIDE MANUAL is136bas fm Chapter 10 TIA EIA 136 Basics Basic Functions of the DCCH in TIA EIA 136 ...
Страница 290: ...290 S HP83206A USRGUIDE MANUAL adptinst fm Chapter 11 Installing the Cellular Adapter PCS Interface Connections ...
Страница 312: ...Index 312 ...