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TS 23.271 (SA2) ★
LCS – Location Services –
Stage 2

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V15.1.0 (PDF)  2018/09  187 p.
V14.4.0  2018/03  187 p.
V13.1.0  2017/12  175 p.
V12.1.0  2014/06  171 p.
V11.3.0  2014/06  171 p.
V10.4.0  2013/03  171 p.
V9.8.0  2013/03  170 p.
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V7.10.0  2009/12  147 p.
V6.13.0  2005/10  123 p.
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:   15.1.0

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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. 139
9.5  Privacy  Word-p. 149
9.6  Mobile Originating Location  Word-p. 155
9.7  CM Procedures  Word-p. 155
9.8  Interworking with the IMS [R6]  Word-p. 155
10  Information storage  Word-p. 158
11  Operational Aspects  Word-p. 167
A (Normative)  Privacy Class selection rule in serving node  Word-p. 169
B (Normative)  Presence of LCS client ID Components in MT-LR  Word-p. 172
C  Pseudo external ID [R5]  Word-p. 173
D (Normative)  including Requestor identity to LCS client name [R6]  Word-p. 177
E  Handling of pseudonyms in location services [R6]  Word-p. 178
F  Mechanism for performing Change of Area Event Detection [R6]  Word-p. 181
G (Normative)  Defined Service Types and numbering [R10]  Word-p. 183
H  Change history  Word-p. 184

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