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Content for  TS 29.171  Word version:  17.1.0

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1  Scopep. 7

The present document specifies the procedures and information coding for LCS Application Protocol (LCS-AP) that is needed to support the location services in E-UTRAN. The LCS-AP message set is applicable to the SLs interface between the E-SMLC and the MME. LCS-AP is developed in accordance to the general principles stated in TS 23.271.

2  Referencesp. 7

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 36.305: "Stage 2 functional specification of User Equipment (UE) positioning in E-UTRAN".
[3]
TS 23.271: "Functional stage 2 description of Location Services (LCS)".
[4]
RFC 4960:  "Stream Control Transmission Protocol".
[5]
TIA/EIA/IS-J-STD-036 (2000): "Wireless Enhanced Emergency Services".
[6]
TS 23.032: "Universal Geographical Area Description (GAD)".
[7]
TS 36.413: "S1 Application Protocol (S1AP)".
[8]
ITU-T Recommendation X.680 (07/2002): "Information Technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation".
[9]
ITU-T Recommendation X.681 (07/2002): "Information Technology - Abstract Syntax Notation One (ASN.1): Information object specification".
[10]
TS 22.071: "Location Services (LCS); Service Description; Stage1".
[11]
TS 23.003: "Numbering, addressing and identification".
[12]
ITU-T Recommendation X.691 (07/2002): "Information Technology - ASN.1 encoding rules - Specification of Packed Encoding Rules (PER)".
[13]
RFC 4119:  "A Presence-based GEOPRIV Location Object Format".
[14]
RFC 5139:  "Revised Civic Location Format for Presence Information Data Format Location Object".
[15]
RFC 6848:  "Specifying Civic Address Extensions in the Presence Information Data Format Location Object (PIDF-LO)".
[16]
RFC 5905:  "Network Time Protocol Version 4: Protocol and Algorithms Specification".
[17]
TS 24.301: "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3".
[18]
RFC 4776:  "Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Option for Civic Addresses Configuration Information".
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3  Definitions and abbreviationsp. 8

3.1  Definitionsp. 8

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
Elementary Procedure:
LCS-AP protocol consists of Elementary Procedures (EPs). An LCS-AP Elementary Procedure is a unit of interaction between the MME and the E-SMLC. An EP consists of an initiating message and possibly a response message. Two kinds of EPs are used:
  • Class 1: Elementary Procedures with response (success or failure),
  • Class 2: Elementary Procedures without response.
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3.2  Abbreviationsp. 8

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
CID
Cell-ID (positioning method)
E-CID
Enhanced Cell-ID (positioning method)
E-SMLC
Enhanced Serving Mobile Location Centre
E-UTRAN
Envolved Universal Terrestrial Radio Access Network
GNSS
Global Navigation Satellite System
GPS
Global Positioning System
LCS
LoCation Services
LCS-AP
LCS Application Protocol
LPP
LTE Positioning Protocol
LPPa
LTE Positioning Protocol Annex
LTE
Long Term Evolution
MBS
Metropolitan Beacon System
MO-LR
Mobile Originated Location Request
MT-LR
Mobile Terminated Location Request
NI-LR
Network Induced Location Request
MME
Mobility Management Entity
OTDOA
Observed Time Difference Of Arrival
PDU
Protocol Data Unit
SCTP
Stream Control Transmission Protocol
SET
SUPL Enabled Terminal
SLP
SUPL Location Platform
SUPL
Secure User Plane Location
TA
Timing Advanced
UE
User Equipment
U-TDOA
Uplink Time Difference Of Arrival
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