Content for TR 38.845 Word version: 17.0.0

3.1 Terms 3.2 Symbols 3.3 Abbreviations
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1 Scope Word‑p. 6

The present document captures the findings of the study item, "Study on scenarios and requirements of in-coverage, partial coverage, and out-of-coverage positioning use cases" [2]. The purpose of this TR is to facilitate future 3GPP work by identifying the requirements and deployment/operation scenarios for V2X and public safety use cases. In particular, this study considers positioning for the UEs in in-coverage, partial coverage, and out-of-coverage as per the network coverage definition in the current specifications.

This document is a 'living' document, i.e. it is permanently updated and presented to TSG-RAN meetings until it is approved.

2 References

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]

3GPP RP-201518: "Revised SID on Study on scenarios and requirements of in-coverage, partial coverage, and out-of-coverage positioning use cases".

[3]

TS 22.261: "Service requirements for the 5G system".

[4]

TS 22.186: v16.2.0: "Enhancement of 3GPP support for V2X scenarios".

[5]

3GPP RP-210040: "Reply LS to RP-201390 on requirements of in-coverage, partial coverage, and out-of-coverage positioning use cases," (source: 5GAA).

[6]

3GPP RP-210036: "Reply LS to 3GPP TSG RAN on requirements of in-coverage, partial coverage and out-of-coverage positioning use cases," (source: SAE Advanced Applications Technical Committee).

[7]

TS 22.280: "Mission Critical Services Common Requirements (MCCoRe)".

[8]

TR 22.872: "Study on positioning use case".

[9]

TR 37.885: "Study on evaluation methodology of new Vehicle-to-Everything (V2X) use cases for LTE and NR".

[10]

TR 38.802: "Study on new radio access technology Physical layer aspects".

3 Definitions of terms, symbols and abbreviations

3.1 Terms

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.

absolute position:

absolute position is an estimate of the UE position in 2D/3D geographic coordinates (e.g., latitude, longitude, elevation) within a coordinate system

relative position:

relative position is an estimate of the UE position relative to other network elements or relative to other UEs

positioning service availability:

percentage value of the amount of time the positioning service is delivering the required position-related data within the performance requirements, divided by the amount of time the system is expected to deliver the positioning service according to the specification in the targeted service area.

positioning service latency:

time elapsed between the event that triggers the determination of the position-related data and the availability of the position-related data at the system interface.

3.2 Symbols Word‑p. 7

For the purposes of the present document, the following symbols apply:

3.3 Abbreviations

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.

5GAA

5G Automotive Association

SAE AA TC

SAE Advanced Applications Technical Committee

TTFF

Time To First Fix

High Definition

Remote vehicle

TOD

Tele-Operated Driving

MCX

Mission Critical X, with X = PTT or X= Video or X= Data