COOPERATIVE - ITS (C-ITS)

APPLICATIONS

Performances

G5 Channels Management

Applications

(Non crash avoidance)

Summary of targeted applications

ROAD SAFETY TRAFFIC EFFICIENCY

(SUSTAINABILITY)

MOBILITY / COMFORT

ISO TC 204

WG18

TC 278 WG16

ROAD HAZARD SIGNALING

RHS (CAA)

LONGITUDINAL COLLISION

RISK WARNING (LCRW)

INTERSECTION COLLISION

RISK WARNING (ICRW)

TYRE PRESSURE

MONITORING SYSTEM (TPMS) TC 301

COLLECT INFO TRAFFIC

(FROM CAM / DENM)

CONTEXTUAL SPEED

IN-VEHICLE SIGNAGE

ELECTRIC VEHICLE

CHARGING SPOT

NOTIFICATION (EVCSN)

INFO TRAFFIC &

Recommended Itinerary

POI Notification

and Local

Electronic Commerce

(book & pay local

services)

Road Safety Model

PRIMARY ROAD SAFETY SECONDARY

< 1sec

Between 1 and 3 Sec

Between 2 and 5 Sec

Time To Collision (TTC)

TERTIARY

10 Use Cases

Between 5 sec and 30 Sec

Collision

Emergency

Call

Pre – Post Crash Automatic Warning Awareness Info

Cooperative

Awareness

(RHS)

Collision

Risk

Warning

(LCRW,

ICRW)

In-Vehicle

Signage

Road Safety applications

ROAD HAZARD SIGNALING (RHS)

DTS 101 539-1

CAM interval

Setting

DENM Control DRIVER

AWARENESS

Originating Receiving

LONGITUDINAL

COLLISION

RISK WARNING

(LCRW)

DTS 101 539-3

INTERSECTION

COLLISION

RISK WARNING

(ICRW)

DTS 101 529-2

DRIVER

ASSISTANCE

CRASH

AVOIDANCE

IF TARGET IS

CRASH AVOIDANCE:

Minimum Performance

Requirements:

Position accuracy

Data freshness

Traffic Efficiency applications

CAM

DENM

Transfer pre-processed CAM & DENM

Contextual Speeds

In-Vehicle Signage

Traffic Info & Recommended Itineraries

DATEX II RSU

Traffic Management

Center

Advices

Recommendations

Regulations

Traffic Efficiency standard (1)

CAM

DENM

Evolution of DATEX II

CAM & DENM

Pre-processing

Traffic data

Road hazard

ISO TC 204

WG18

RSU

Traffic Management

Centre

ISO / NP17429

Profiles for processing and transfer of information

between ITS Stations for applications related to

transport infrastructure management, control and

guidance.

RSU Configuration

Traffic Efficiency standards (2)

ISO TC 204

WG18

TC 278 WG16

French proposal

IN-VEHICLE SIGNAGE

(Generic part : Actors / roles / Message common part)

SPEED

Regulatory /

Contextual

FIX / VARIABLE

Message Signs

Info Traffic &

Recommended

Itinerary

HMI & Speed

limiter

Only HMI HMI & Navigation

Reprogram.

Required,

Not yet

Started

Sustainability applications

At Intersections Driver HMI

Signal Phase

& Timing (SPAT) +

Intersection

Topology

Signal Violation

Driver HMI

Audio

Alert

Driver HMI

POTENTIAL APPLICATIONS

Signal violation warning

Green Light Optimized Speed Advisory

Optimized Stop – Start at traffic lights

ISO TC 204 /

CEN TC 278

Commercial / Citizen RSU

Safety & Traffic Management

EV Charging spot notification (POI)

Transport intermodality Hub (POI)

Visitor Internet Access (POI used by

community for Certificate updating)

SCORE@F Example: Citizen Roadside Unit

RSU

Mobility & Comfort services

Mobility & Comfort services

POI: EV Charging Spot Notification

ETSI DTS 101 556-1

EV Charging

Station

RSU 1

RSU 2

Broadcasting of dynamic data

Availability per type,

Waiting time,

Energy price,

Possibility to book / pay (Contact)

…etc.

Mobility & Comfort services

POI: Tyre Pressure Gauge Station

ETSI DTS 101 556-2

TYRE PRESSURE

GAUGE (TPG)

TYRE PRESSURE MONITORING

SYSTEM (TPMS) – M/457

Service

Announcement

Data exchange : Vehicle

Characteristics and load,

Tyres characteristics…etc.

System Life Cycle Management

POI: Life Cycle Management – Security Management

e.g. Service to community through Visitor Internet

Access (VIA) through G5 RSU

Security

Mgnt Centre RSU Vehicle

CCH SCH1 CCH SCH1

SAM

VIA POI VIA*

Request

VIA

Granted Security pseudonyms

update request

Security pseudonyms

update (IEEE 1609-2)

3G + Internet (IPv6) G5

For vehicles only

Equipped with G5

3G

Router

COLLISION AVOIDANCE

APPLICATIONS

PERFORMANCES

Positioning accuracy / Confidence

2 Meters of absolute accuracy with 95% Confidence

(about 1 Meter of relative accuracy): According to

sizes of European vehicles.

Subject

Actual Target

Perceived Target

Perceived Target Subject

Actual Target

False Positive

Warning

Lateral

Error

Lateral

Error

VERIFICATION OF THE LONGITUDINAL ALIGNMENT OF

VEHICLES TAKING INTO ACCOUNT THE VEHICLES’ WIDTH

Data Freshness / Confidence

COM

T0 T1 T2 T3 T4 T5 T6

GPS

PROCESSING

+..

Electronic

Control Unit

Processing

CAN

RAW data

Detected

Data

Elements

Values

Available

CAM / DENM

GENERATION

CAM / DENM Interval

Messages

Transmission

ORIGINATING VEHICLE Latency Time (350 ms)

COM

Third

Party

RECEIVING VEHICLE

Messages

Reception

Time

Stamping

Facilities /

Application

Latency Time (50 ms)

Driving

Assistance

Direct

Control

Time

Stamping

CAM / DENM

RECEPTION RISK ASSESMENT

RESULT

?

Safety Messages Intervals

T1 – T2 Delay: Can be dynamically adjusted

according to safety criticality level

A

B

C

D

E

F

G

H

Time

Proximity

Vector

(measured

at crow flies

Virtual Safety Shield

(Dynamic shaping) SAFETY CRITICALITY

BEING ASSESSED

ACCORDING TO

TIME PROXIMITY

VECTOR e.g.

IF LESS THAN

5 SECONDS:

INTERVALS ADJUSTED

TO 100 ms.

Policy in safety critical situation

CAM & DENM Intervals adjusted according to

considered applications at the receiver level.

Security pseudonyms change inhibited when

being in a safety critical situation.

TTC according to type

of Application Criticality level of

the trafic situation CAM / DENM Interval

Driver Assistance,

Cooperative Awareness 2 Between 200 milliseconds

and 1 second

Driver Assistance,

Driver warning if TTC < X1

e.g. 5 seconds 1 100 milliseconds

Direct action on vehicle

Including pre-crash if TTC

< X2 e.g. 1 second

0 50 milliseconds

Technology Agnosticity

G5 RESPONSABILITY

DAIMLER

RENAULT

VW

…etc

Performances

(Position accuracy,

Latency time)

Dependability

Backend

PER

Failure

Attack

Roaming?

4G

(LTE)

Considering performances in technology agnosticity

LTE CELL

Diameter: 500m to 6km

DAIMLER

RENAULT

VW

…etc

COST FOR UNIVERSAL

SERVICE TYPES?

G5 CHANNEL

MANAGEMENT

Communication Management

General Principle

Communication

Management

G5

Communication

Profile

IPv6 based

Communication

Profile

e.g. 4G

Messages Dispatching

G5 Channels

Management

MIB Applications’ states &

Requirements (Functional, Operational, Economical)

Communication

Management

SAM

Interoperability Issues

Exchange Profile G5S1 Exchange Profile G5S1

AIR

Application

Profile

Application

Profile

Communication

Profiles

Communication

Profiles

Ap

plic

atio

n

Ap

plic

atio

n

CAM /

DENM

in

ASN.1

PER

Bro

ad

cast / G

eo

cast

CAM/

DENM

in

ASN.1

PER

Bro

ad

cast / G

eo

cast

BTP

Geo

net

Geo

net

BTP G5A

(CCH)

G5A

(CCH)

Management / Security Profile Management / Security Profile

Messages Broadcasting

Vehicle

B Vehicle

A

Absolute necessity to define common

exchange profiles (not achieved in standards)

G5 Channels management

Modem 2 Modem 1

Hypothesis:

One radio

Receiver

One radio

Transmitter

per Modem

CCH SCH

1

SCH

2 SCH

3

SCH

4

5.855 5.925

G5A G5B Fix Dynamically

Configurable

Critical Safety +

Signalization (SAM) (CCH)

Traffic Mgnt SCH1, SCH2

Security (SCH1)

Mobility (SCH3, SCH4)

Comfort (SCH3, SCH4)

G5 Channels

Management SAM MIB

List of active

Local applications SAM Channel

Switching

G5 Services advertisement

ISO CD 24102-5: Fast Service Advertisement Protocol

Service Advertisement Message (SAM)

Header Body

FMT ID

(SAM) Version

N°

Station

ID

Services

List

Channels

List

IP

Services

Number of

Non IP

Services ITS-AIDs

Services

Data

Services

Ports

Sessions

Elements

Not applicable for road safety applications

Mainly used for services advertisement from a RSU

G5 Services advertisement

Implementation:

SERVICES LIST CHANNELS LIST

APPLICATION ITS-AID CHANNELS ASSIGNMENT PROPOSAL

Exemple, but not completed

ROAD SAFETY CCH SAM CCH

In-Vehicle SIGNAGE

SECURITY UPDATE SCH1

SCH1 Info Traffic &

Recom. Itinerary SCH1

Intersection Management

(SPAT – TOPO) SCH2

POI for Mobility SCH3

Comfort (Multimedia) SCH4

? ?

?

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Discussion