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TS 03.71 (SA2)
Location Services (LCS) – Functional Description – Stage 2

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(P) GSM Rel-99 v8.9.0  2004/06  112 p.
(P) GSM Rel-98 v7.11.0  2004/06  111 p.

Rapporteur:  BROOK, Richard
Descendant:  TS 23.171
See also:  LCS-related TS/TR

This TS defines the stage-2 service description for the LoCation Services (LCS) feature on GSM, which provides the mechanisms to support mobile location services of operators, which are not covered by standardized GSM services.

The LCS feature is a network feature and not a supplementary service. This version of the stage 2 service description covers aspects of LCS e.g., the functional model, architecture, positioning methods, message flows etc.


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1  ScopePDF-p. 9
2  References
3  Definitions, abbreviations and symbolsPDF-p. 10
4  Main concepts
5  General LCS architecture
5.1  LCS access interfaces and reference points
5.2  LCS Functional diagramPDF-p. 14
5.3  LCS CLIENTPDF-p. 15
5.4  LCS Server
5.5  Information Flows between Client and ServerUp
5.6  Logical architecture
5.7  Embedded Architecture
5.8  Assignment of functions to general logical architecturePDF-p. 23
6  Signalling Protocols and Interfaces

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