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TS 23.271  SA2 ★
LCS – Location Services

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V15.2.0 (PDF)  2019/12  190 p.
V14.4.0  2018/03  187 p.
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V12.1.0  2014/06  171 p.
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V5.13.0  2005/01  82 p.
V4.13.0  2005/01  75 p.
3GPP 23.271 - Location Services (LCS) Architecture
Rapporteur:  Mr. Wong, Gavin
This TS specifies the stage 2 of the LoCation Services (LCS) feature in UMTS, GSM and EPS (for E-UTRAN), which provides the mechanisms to support mobile location services for operators, subscribers and third party service providers.

short Table of Contents for  TS 23.271  Word version:   15.2.0

each title links to the equivalent title in the full ToC
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1  Scope  Word-p. 10
2  References  Word-p. 10
3  Definitions, symbols and abbreviations  Word-p. 12
4  Main concepts  Word-p. 20
5  General LCS architecture  Word-p. 24
6  LCS Architecture  Up  Word-p. 34
7  Signalling and Interfaces  Word-p. 46
8  General network location procedures  Word-p. 51
9  General Network Positioning Procedures  Word-p. 56
9.1  Mobile Terminating Location Request  Word-p. 57
9.2  Mobile Originating Location Request  Word-p. 122
9.3  LCS signalling procedures specified in UTRAN and GERAN Stage 2  Word-p. 134
9.3a  LCS signalling procedures applicable to E-UTRAN [R9]  Word-p. 134
9.4  Exception Procedures  Word-p. 140
9.5  Privacy  Word-p. 151
9.6  Mobile Originating Location  Word-p. 157
9.7  CM Procedures  Word-p. 157
9.8  Interworking with the IMS [R6]  Word-p. 157
10  Information storage  Word-p. 160
11  Operational Aspects  Word-p. 169
A (Normative)  Privacy Class selection rule in serving node  Word-p. 171
B (Normative)  Presence of LCS client ID Components in MT-LR  Word-p. 174
C  Pseudo external ID [R5]  Word-p. 175
D (Normative)  including Requestor identity to LCS client name [R6]  Word-p. 179
E  Handling of pseudonyms in location services [R6]  Word-p. 180
F  Mechanism for performing Change of Area Event Detection [R6]  Word-p. 183
G (Normative)  Defined Service Types and numbering [R10]  Word-p. 185
H  Change history  Word-p. 186

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