ETSI TS 103 246-4 V1.1.1 (2016-01)

ETSI TS 103 246-4 V1.1.1 (2016-01)






TECHNICAL SPECIFICATION
Satellite Earth Stations and Systems (SES);
GNSS based location systems;
Part 4: Requirements for location data exchange protocols

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2 ETSI TS 103 246-4 V1.1.1 (2016-01)



Reference
DTS/SES-00348
Keywords
GNSS, location, MSS, navigation, performance,
receiver, satellite, system, terminal
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3 ETSI TS 103 246-4 V1.1.1 (2016-01)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 7
4 Data Exchange Requirements . 8
4.1 Context . 8
4.2 Protocol Choice and Compatibility . 9
4.2.1 LSEP (MLP) . 9
4.2.2 LSIP (LPPe) . 10
4.2.2.1 General . 10
4.2.2.2 LSIP Data Exchange Requirements . 10
4.2.3 LSEP/MLP and LSIP/LPPe Terminology . 12
5 LSEP Requirements . 13
5.1 LSEP Services and Procedures . 13
5.2 Extension of MLP for LSEP. 14
5.3 LSEP Data Exchange Message Definition . 14
6 LSIP Requirements . . 15
6.1 LSIP Services and Procedures . 15
6.2 Extension of LPPe/LPP for LSIP . 15
6.3 LSIP Data Exchange Message Definition . 16
6.3.1 General . 16
6.3.2 IE Extensions of LPP/LPPe for LSIP . 16
6.3.2.1 Message Extensions . 16
6.3.2.2 LPPe data type imports . 16
6.3.3 LSIP Extension Messages . 17
6.3.3.1 Request Assistance Data . 17
6.3.3.2 Provide Assistance Data . 17
6.3.3.3 Request Location Information . 17
6.3.3.4 Provide Location Information . 18
7 LSEP Element Definitions . 18
7.1 Overview . 18
7.2 LSEP Child Elements . 18
7.2.1 Identity elements . 18
7.2.2 Location elements . 18
7.2.3 Quality of Position elements . 20
7.3 LSEP Sub-Child Elements . 21
7.3.1 accel . 21
7.3.2 accel_conf_lev . 21
7.3.3 accel_unc . 21
7.3.4 accel_req . 21
7.3.5 auth_flag . 22
7.3.6 auth_req . 22
7.3.7 conf_class . 22
7.3.8 emidata_req. 22
7.3.9 h_acc . 23
ETSI

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4 ETSI TS 103 246-4 V1.1.1 (2016-01)
7.3.10 h_acc_not_met . 23
7.3.11 h_conf_lev . 23
7.3.12 h_int_alert . 23
7.3.13 head_conf_lev . 23
7.3.14 head_req . 24
7.3.15 head_unc . 24
7.3.16 LSEP-msids . 24
7.3.17 v_acc . 24
7.3.18 v_acc_not_met . 24
7.3.19 v_conf_lev . 25
7.3.20 v_unc . 25
7.3.21 v_req . 25
7.3.22 vel_acc . 25
7.3.23 vel_acc_not_met . 25
7.3.24 vel_conf_lev . 26
7.3.25 vel_unc . 26
7.3.26 vel_req . 26
8 LSIP Information Elements . 26
8.1 LSIP Common Positioning IEs . 26
8.1.1 General . 26
8.1.2 LSIP-CommonIEsRequestLocationInformation . 26
8.1.3 LSIP-CommonIEsProvideLocationInformation . 28
8.2 LSIP Common Low-Level IEs . 30
8.2.1 General . 30
8.2.2 LSIP-ConfidenceLevels . 30
8.2.3 LSIP-ErrorMeasurements . 31
8.2.4 LSIP-QosIndicators . 31
8.3 Specific Positioning Method IEs . 31
8.3.1 General . 31
8.3.2 GNSS Positioning . 32
8.3.2.1 LSIP-GNSS-RequestLocationInformation . 32
8.3.2.2 LSIP-GNSS-ProvideLocationInformation . 32
8.3.3 Odometer positioning . 32
8.3.3.1 LSIP-Odometer-RequestAssistanceData . 32
8.3.3.2 LSIP-Odometer-ProvideAssistanceData . 33
8.3.3.3 LSIP-Odometer-RequestLocationInformation . 33
8.3.3.4 LSIP-Odometer-ProvideLocationInformation . 33
8.3.4 Beam Forming Network Positioning . 34
8.3.4.1 LSIP-BFN-RequestLocationInformation . 34
8.3.4.2 LSIP-BFN-ProvideLocationInformation. 34
8.3.4.3 LSIP-JammerSignal . 34
8.3.5 Mapping Positioning . 35
Annex A (informative): Rationale for LSEP/MLP and LSIP/LPPe . 36
A.1 Basis for LSEP/MLP . 36
A.2 Basis for LSIP/LPPe . 36
A.3 LSIP Implementation Cases . 36
A.4 LSIP Procedure examples for GBLS Interface 10 . 38
A.4.1 "Mobile-centric" Assistance data provisioning . 38
A.4.2 "Network-centric" Location Information provisioning . 39
Annex B (informative): Bibliography . 40
History . 41

ETSI

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5 ETSI TS 103 246-4 V1.1.1 (2016-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Satellite Earth Stations and
Systems (SES).
The present document is part 4 of a multi-part deliverable covering GNSS-based Location Systems (GBLS), as
identified below:
Part 1: Functional requirements;
Part 2: Reference Architecture;
Part 3: Performance requirements;
Part 4: Requirements for location data exchange protocols;
Part 5: Performance Test Specification.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The increasing proliferation of location-based services is based on several trends in user applications and devices; these
include notably the widespread adoption of multi-functional smart-phones, etc., and the wider adoption of tracking
devices (e.g. in transport). This need for new and innovative location-based services is generating a need for
increasingly complex location systems. These systems are designed to deliver location-related information for one or
more targets to user applications.
The wide spectrum of technical features identified in ETSI TR 103 183 [i.1] calls for a new and broader concept for
location systems, taking into account hybrid solutions in which GNSS technologies are complemented with other
technology sensors to improve robustness and the performance.
ETSI

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6 ETSI TS 103 246-4 V1.1.1 (2016-01)
1 Scope
The present document defines the requirements for data elements that may need to be exchanged within the GBLS and
externally to applications using the GBLS.
The present document also specifies data exchange models for these data elements which may form the basis of
protocols (or for modification of protocols) and which may be used for the exchange of location-related data within the
GNSS-based Location System (GBLS), as well as between the GBLS and external applications.
In particular, the present document defines the procedures and messages associated with these data exchange models
The GBLS data exchange models are defined to be independent of their underlying transport mechanisms. Nevertheless,
on certain GBLS interfaces, transport protocols are recommended.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 103 246-1: "Satellite Earth Stations and Systems (SES); GNSS based location systems;
Part 1: Functional requirements".
[2] ETSI TS 103 246-2: "Satellite Earth Stations and Systems (SES); GNSS based location systems;
Part 2: Reference Architecture".
[3] ETSI TS 103 246-3: "Satellite Earth Stations and Systems (SES); GNSS based location systems;
Part 3: Performance requirements".
[4] OMA-TS-MLP-V3.5: "Mobile Location Protocol".
[5] OMA-TS-LPPe-V2.0: "LPP Extensions Specification".
[6] ETSI TS 136 355: "LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); LTE Positioning
Protocol (LPP) (3GPP TS 36.355)".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TR 103 183: "Satellite Earth Stations and Systems (SES); Global Navigation Satellite
Systems (GNSS) based applications and standardisation needs".
[i.2] OMA-TS-ULP-V3: "User Plane Location Protocol".
ETSI

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7 ETSI TS 103 246-4 V1.1.1 (2016-01)
[i.3] OMA-AD-LOCSIP-V1: "Location in SIP/IP core Architecture".
[i.4] ETSI ES 201 915: "Open Service Access (OSA); Application Programming Interface (API)".
[i.5] 3GPP2 C.S0022-B: "Position Determination Service for cdma2000 Spread Spectrum Systems".
[i.6] ETSI TS 125 331: "Universal Mobile Telecommunications System (UMTS); Radio Resource
Control (RRC); Protocol specification (3GPP TS 25.331)".
[i.7] ETSI TS 144 031: "Digital cellular telecommunications system (Phase 2+); Location Services
(LCS); Mobile Station (MS) - Serving Mobile Location Centre (SMLC) Radio Resource LCS
Protocol (RRLP) (3GPP TS 44.031)".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in ETSI TS 103 246-1 [1] apply.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
rd
3GPP 3 Generation Partnership Project
API Application Programming Interface
ASN Abstract Syntax Notation
BFN Beam Forming Network
CL Confidence Level
DoA Direction of Arrival
DTD Document Type Definition
ECID Enhanced Cell ID
EMI ElectroMagnetic Interference
EOTD Enhanced Observed Time Difference
EPDU Extension Protocol Data Unit
EPDU External Protocol Data Unit
E-SMLC Enhanced Mobile Location Centre
FFS For Further Study
GBLS GNSS Based Location System
GGTO GPS-Galileo Time Offset
GNSS Global Navigation Satellite Systems
GPS Global Positioning System
GSM Global System for Mobile Communications
HTTP HyperText Transfer Protocol
HTTPS HTTP Secure
IE Information Element
IMSI International Mobile Station Identifier
INS Inertial Navigation Sensor
LCS Location Services
LOCSIP LOCation in SIP
LPP LTE Positioning Protocol
LPPe LTE Positioning Protocol Extensions
LSEP Location System External Protocol
LSIP Location System Internal Protocol
LTE Long-Term Evolution
MLP Mobile Location Protocol
MLS Mobile Location System
MS Mobile Station
MSID Mobile Station Identifier
OMA Open Mobile Alliance
OTDOA Observed Time Difference of Arrival
PVT Position Velocity Time
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8 ETSI TS 103 246-4 V1.1.1 (2016-01)
QoS Quality of Service
RF Radio Frequency
RRC Radio Resource Control
RRLP Radio Resource Location services (LCS) Protocol
RT Real-Time
SET SUPL Enabled Terminal
SIP Session Initiation Protocol
SLP Server Location Provider
SMLC Serving Mobile Location Centre
SOAP Simple Object Access Protocol
SRN Short Range Node
SSL Secure Socket Layer
TCP/IP Transmission Control Protocol over Internet Protocol
TLS Transport Layer Security
UE User Equipment
ULP User-plane Location Protocol
UMTS Universal Mobile Telecommunications System
UTC Coordinated Universal Time
UTRA UMTS Terrestrial Radio Access
WLAN Wireless Local Area Network
XML Extensible Markup Language
4 Data Exchange Requirements
4.1 Context
The GBLS data that shall or may be exchanged is defined in ETSI TS 103 246-2 [2] in general terms for two main
cases:
1) externally to applications using the GBLS; and
2) internally between modules of the GBLS.
The specific requirements for this data are defined further in clauses 5 and 6.
In addition, data exchange models are defined herein as a basis for protocols that may be used to transfer the GBLS
data.
Figure 4.1 shows these defined protocol models and their relevant interfaces applied to the GNSS-based Location
System (GBLS) and its functional entities as defined in ETSI TS 103 246-2 [2], within an end-to-end system.
NOTE: Throughout the present document, the word "protocol" is used for brevity, when defining a GBLS "data
exchange model". The specifications herein are of data exchange models that may form the basis of
protocols.
ETSI

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9 ETSI TS 103 246-4 V1.1.1 (2016-01)
GNSS-based Location System
Positioning Module
Central Facility
Central Management
Centralised
On-board
On-board Module
Localisation
Localisation
Localisation
Core Interface
GNSS & Sensor
Module
Sensor Core
Module
Module Assistance
other external Management
Management
Interface
Systems Server To
External
(GNSS and
(GNSS and
LSIP LSIP LSIP
Service
other Sensors)
other Sensors)
provider
LSIP
LSIP
Application Application
Interface Module
Interface Module
Key:
Mandatory LSEP LSEP
Optional
Application(s) Application(s)

Figure 4.1: Use of LSEP and LSIP in the GBLS architecture
The protocols defined are:
• LSEP (Location System External Protocol): between the GBLS and an external application (requesting
entity).
• LSIP (Location System Internal Protocol): between internal components of the GBLS.
These protocols shall transfer the location-related data defined in ETSI TS 103 246-2 [2].
The Protocol definitions in the following clauses address the following aspects:
1) protocol procedures;
3) message definitions from a semantic point of view i.e. the information they shall contain, and how this
information is structured;
4) information elements within messages and a set of relationships between the
...