ISO/TR 22086-1:2019

TECHNICAL ISO/TR
REPORT 22086-1
First edition
2019-03
Intelligent transport systems
(ITS) — Network based precise
positioning infrastructure for land
transportation —
Part 1:
General information and use case
definitions
Reference number
©
ISO 2019
© ISO 2019
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ii © ISO 2019 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 2
4 Document overview and structure . 3
5 General information . 3
5.1 Purpose of this document . 3
5.2 Overview of NETPPI-LT . 3
6 Use case overview and definitions . 6
6.1 General . 6
6.2 Use case overview . 6
6.2.1 Basic principles for use cases . 6
6.2.2 Use case clusters . 7
6.3 Use case definitions . 8
6.3.1 UC cluster 1 — Safe driving . 8
6.3.2 UC cluster 2 — Intersection approach and clearance .11
6.3.3 UC cluster 3 — Public transportation safety .12
Bibliography .14
Foreword
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This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
A list of all parts in the ISO 22086 series can be found on the ISO website.
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iv © ISO 2019 – All rights reserved

Introduction
This document provides the framework guidelines to identify lane-level positioning technologies
with the land transportation service requirements and related standards required to deploy, manage,
and operate network-based precise positioning infrastructure for land transportation. The purpose
of the system is to generate and transmit the GNSS correction and integrity information to land
transportation users including drivers, pedestrians, riders, etc. in order to enable them to perform
lane-level positioning with low-cost GNSS receivers on nomadic devices at a high confidence level. The
system design following the requirements of ITS and automotive services that are closely related to
traffic safety and traffic efficiency is defined.
TECHNICAL REPORT ISO/TR 22086-1:2019(E)
Intelligent transport systems (ITS) — Network
based precise positioning infrastructure for land
transportation —
Part 1:
General information and use case definitions
1 Scope
This document provides the framework guidelines on technologies related to the network-based precise
positioning infrastructure for land transportation (NETPPI-LT) that allows land transportation users
or objects carrying nomadic devices, equipped with low-cost global navigation satellite systems (GNSS)
receivers and wireless communication transceivers, to perform lane-level positioning and integrity
monitoring. These technologies will unlock enhanced intelligent transport systems (ITS) services and
applications and will increase traffic operation/management efficiencies and traffic safety by reducing
economic and social costs from traffic jams, traffic accidents, and environmental pollution.
The framework described in this document includes:
— reference architecture for the NETPPI-LT enabling lane-level positioning and integrity monitoring
on personal ITS devices;
— guidelines for providing a real-time lane-level positioning service based on GNSS with the aid of the
NETPPI-LT;
— guidelines to facilitate the practical implementation of the NETPPI-LT for engineers including
related use cases.
2 Normative references
There are no normative references in this document.
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1.1
reference station
implementation of a NETPPI-LT subsystem which captures signals/data from visible GNSS satellites
and monitoring information (pressure, temperature, humidity, image, etc.) at a known position with
clear sky view and no radio interferences, and includes wired or wireless links to send the collected
data to the control station
3.1.2
control station
implementation of a NETPPI-LT subsystem which generates the GNSS carrier phase measurement
correction and integrity information based on the information received from multiple reference
stations, and sends the correction and integrity information to wireless communication/broadcast
systems (cellular networks, WAVE, DMB, etc.) for data transmission to drivers or pedestrians with
nomadic devices
3.1.3
monitoring station
implementation of a NETPPI-LT subsystem which tests validity of the information, originated by the
control station, and gives feedback to the control station for the system management
3.1.4
base station
implementation of a NETPPI-LT subsystem which is a part of wireless communication/broadcast
systems and provides the correction and integrity information, originated by the control station, to
drivers or pedestrians carrying nomadic devices
3.1.5
nomadic device
implementation of any type of nomadic device which captures carrier phase measurements for ranging
to visible GNSS satellites, receives the correction and integrity information, originated by the control
station, via wireless links including cellular networks (LTE families, 5G), WAVE, DSRC, DAB, DMB, etc.,
and determines its own position along with integrity by using the received data
3.2 Abbreviated terms
5G fifth-generation mobile communications
C-ITS-S central intelligent transportation system station
DAB digital audio broadcasting
DMB digital multimedia broadcasting
DSRC dedicated short-range communications
GNSS global navigation satellite systems
IMU inertial measurement unit
ITS intelligent transportation system
LTE long term evolution
NETPPI-LT network based precise positioning infrastructure for land transportation
R-ITS-S roadside intelligent transportation system station
RTCA Radio Technical Commission for Aeronautics
RTCM Radio Technical Commission for Maritime Services
WAVE wireless access for vehicular environment
2 © ISO 2019 – All rights reserved

V2I vehicle-to-infrastructure
V2V vehicle-to-vehicle
V2X vehicle-to-everything
4 Document overview and structure
This document provides all documents and references required to support the implementation of the
requirements related to GNSS-based positioning with lane-level accuracy on nomadic devices. This
series of standards consists of the following parts.
— Part 1: General information and use case definitions
This part provides an overview of the document set and structure along with the use case definitions
and common set of resources (definitions, references), which are used for all subsequent parts.
1)
— Part 2 : Functional requirements and data interface
This part provides functional requirements of nomadic devices for the NETPPI-LT services and
data interface between the infrastructure side and nomadic device.
5 General information
5.1 Purpose of this document
This document addresses three major areas:
— Identify the requirements of application level framework for the NETPPI-LT (lane-level positioning
and integrity monitoring) services that can be frequently inserted, modified, and deleted;
— Identify the general information for all subjects related to the NETPPI-LT services from the
perspectives of infrastructure and personal station (nomadic device);
— Specify the general use cases that should be included for the NETPPI-LT services.
5.2 Overview of NETPPI-LT
Existing ITS services and applications require road-level (meter) positioning accuracy, and commercial
nomadic devices or ITS stations meet this requirement with low-cost standalone GNSS receivers that
exploit code phase measurements for ranging to the satellites and may have the aid of mobile networks.
Emerging ITS services and vehicle technologies including autonomous vehicles, platooning, and
collision avoidance demand lane-level (sub-meter) positioning accuracy, which cannot be achieved
with the low-cost standalone GNSS receivers on the nomadic devices at a high level (95 % or more) of
confidence. Integrity is another requirement t
...