Content for TR 23.700-96 Word version: 18.0.0
1 Scope
2 References
3 Definitions of terms, symbols and abbreviations
4 Architectural assumptions and requirements
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1 Scope p. 7
The present document studies and evaluates the application architecture aspects and solutions to address potential new and enhanced location capabilities for vertical application enabler, including the following aspects:
- Enabling location performance (accuracy, availability and latency) enhancements through combined use and fusion of 3GPP and non-3GPP location technologies at the application layer;
- Identification and classification of location related requirements (including location QoS) for vertical application services;
- Architecture enhancement leveraging 5G positioning and location services;
- Enabling location sources and positioning methods selection based on the requested location QoS;
- Initialization and configuration for fused location service;
- Enabling value-added location service capabilities exposure to vertical applications;
- Enhancements on SEAL location management addressing the aspects above.
2 References p. 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 22.261: "Service requirements for next generation new services and markets; Stage 1".
[3]
TS 23.271: "Functional stage 2 description of Location Services (LCS)".
[4]
TS 23.273: "5G System (5GS) Location Services (LCS); Stage 2".
[5]
TS 23.501: "System Architecture for the 5G System; Stage 2".
[6]
TS 38.305: "Stage 2 functional specification of User Equipment (UE) positioning in NG-RAN".
[7]
TS 22.104: "Service requirements for cyber-physical control applications in vertical domains; Stage 1".
[8]
TS 22.125: "Unmanned Aerial System (UAS) support in 3GPP; Stage 1".
[9]
TS 22.071: "Location Services (LCS); Service description; Stage 1".
[10]
Open Mobile Alliance, OMA AD SUPL: "Secure User Plane Location Architecture", (http://www.openmobilealliance.org ).
[11]
Open Mobile Alliance, OMA AD MLS: "Mobile Location Service Architecture", (http://www.openmobilealliance.org ).
[12]
TS 23.502: " Procedures for the 5G System (5GS); Stage 2".
[13]
TS 23.434: "Service Enabler Architecture Layer for Verticals (SEAL); Functional architecture and information flows".
[14]
TS 29.572: "Location Management Services; Stage 3".
3 Definitions of terms, symbols and abbreviations p. 8
3.1 Definitions p. 8
For the purposes of the present document, the terms 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.
For the purposes of the present document, the following terms and definitions given in TS 22.261 apply:
5G enhanced positioning area
5G positioning service area
For the purposes of the present document, the following terms and definitions given in TS 23.271 apply:
Current Location
LCS Server
Location Estimate
Velocity
For the purposes of the present document, the following terms and definitions given in TS 23.273 apply:
LCS Client
For the purposes of the present document, the following terms and definitions given in TS 23.501 apply:
5G Access Network
5G Core Network
5G System
NG-RAN
3.2 Abbreviations p. 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.
GMLC
Gateway Mobile Location Centre
LCS
LoCation Services
LDR
Location Deferred Request
LMF
Location Management Function
LPP
LTE Positioning Protocol
MO-LR
Mobile Originated Location Request
MT-LR
Mobile Terminated Location Request
NI-LR
Network Induced Location Request
SLP
SUPL Location Platform
SUPL
Secure User Plane Location
TNAN
Trusted Non-3GPP Access Network
UNAN
Untrusted Non-3GPP Access Network
4 Architectural assumptions and requirements p. 9
4.1 Architectural assumptions p. 9
For discussions of architecture aspects of application enablement in this document, the following architectural assumptions apply:
- The positioning methods include the standard positioning methods supported for NG-RAN access as specified in clause 4.3 in TS 38.305, and the positioning methods supported for non-3GPP access as specified in clause 5.3.1 in TS 23.273.
- The source of location may include other standard location service (non-3GPP location service of e.g. OMA) from the third party.
- The PLMN operator must be able to protect user location data and privacy when the application enablement architecture is within the PLMN operator domain.
4.2 Architectural requirements p. 9
The following is the architectural requirements to support 5G-enabled fused location service.
- The application layer architecture should take the baseline location management server specified in TS 23.434 and the location resources and positioning methods should not conflict with the existing one in TS 23.501 and TS 23.502.
- The application layer architecture shall provide mechanisms to enable location performance (accuracy, availability and latency) enhancements through combined use and fusion of 3GPP and non-3GPP location technologies;
- The application layer architecture shall enhance the SEAL location-related architecture to provide more accurate UE location report. And enhance the LM-UU interface to transfer the fused location information.
