Busting the myths of cellular V2x communication by testing

Anton Messmer

Vice President Mobile Radio Testers

Rohde & Schwarz, Germany

Busting the myths of cellular V2x

communication by testing

On the way to a future of autonomous driving

5G Techritory - Riga 2018 - Anton Messmer 2

More Comfort

93% of all car

accidents are caused

by human errors

Safety

People spending more

than 4 years of life in

cars

Efficiency

People like to text, surf

or just enjoy time in

cars

Comfort

Autonomous and/or cooperative systems


Autonomous Systems e.g. Pre-collision safety system

Cooperative Systems e.g. Traffic hazard warning

On-board sensors are used to detect objects

(other vehicles, signs, pedestrians) around

the vehicle within the visibility range

Enhanced safety systems leverage the smart use of both approaches

Communication with infrastructure or other

vehicles enables detection of objects and

‘events’ outside the visibility range

Typical cooperative safety applications addressed by V2x


Cooperative maneuver

! ! !

Emergency electronic brake lights

!

Queue warning

Speed harmonization 50

V2X communication architecture: V2V | V2N | V2I | V2P

Direct communication (PC5) or network communication (Uu)


Cloud Service

Edge Service

Edge Service

V2N:Vehicle to Network

V2V:Vehicle to Vehicle

V2I:Vehicle to Infrastructure

V2P:Vehicle to Pedestrian

3GPP Rel. 14: Adoption of LTE-D2D PC5 in a dedicated carrier

for V2V in-coverage and out-of-coverage scenarios


In-coverage scenario w/

eNodeB scheduling (TM3)

Out-of-coverage scenario w/

distributed scheduling (TM4)

Uu

PC5 PC5

Uu

DMRS extension to cope

with relative speed of

up to 500 km/h

New arrangement of

resources into resource

pools (RPs)

Spectrum sensing and

collision avoidance for

distributed scheduling

Reused channel structure

of sidelink communication

Time synchronization via

GNSS

Introduction the concept of

zones for transmission

resources

Essential to ensure interoperability and required performance:

Test and certification of C-V2x communication devices


LTE-V (PC5) Test setup

ı LTE-PC5 communication test

Transmission Mode 4 (3GPP Rel.14, PSCCH, PSSCH)

Out-of-coverage operation with GNSS synchronization

ı GCF Protocol Conformance

LTE-V2V GCF Work Item 281 (V2V)

LTE-V2X GCF Work Item 282 (V2X)

PC5 GNSS

C-V2x signaling solution for 3GPP Rel.14


First C-V2x signaling solution on the market

CMW500 MLAPI based C-V2x Test Cases

The demo shows vehicle-to-vehicle (V2V)

PC5 mode communications between a

simulated vehicle (DUT) and the

R&S®CMW500.

Transferring ITS messages from one vehicle

to the other will be demonstrated. E.g. if one

vehicle brakes, it will be seen in the other

vehicle. Link: https://www.youtube.com/watch?v=EMam1ve4mCQ

https://www.youtube.com/watch?v=EMam1ve4mCQ



C-V2x enhancement in 3GPP focusing on specific use cases

requiring high data rates and lower latency


Vehicle

Platooning

Advanced

Driving

Extended

sensors

Remote

driving

Support of low latency, high

data rate links to exchange

• sensor data

• intention information

• trajectory data

Aggregation of up to 8 PC5 carriers

(TM3&TM4)

Support of 64 QAM for

higher data rate

Reduce the max. time between L1

packet arrival and resource selected

for transmission

from 20 to 10 ms

Transmit diversity

5GAA timeline for deployment of LTE-V2x (V2V, V2I)


2021ff 2020 2019 2018

LTE-V (Rel. 14) chipsets

Integration, Validation and testing with OEMs

Testing of traffic infrastructure

LTE V2x (Rel. 14) LTE e-V2x (Rel. 15)

Interop tests

C-V2x is real and ready

with commercial chipsets

In-Vehicle commercial

deployments latest by 2020

Chipset tests

5G NR V2x (Rel. 16)

2017

5G started with trying to define a wide range of applications first and

define a very flexible 5G NR numerology to support most of them


1980 1990 2000 2010 2020 2030

1

2

Phone

Phone,SMS

Phone, SMS, Web

Voice, Audio, Video, Apps , …

G

G

3 G

5 G

Audio, Video, Apps, AR/VR (eMBB)

Sensors (mMTC)

Sensors/Aktuator (URLLC)

4 G

Over four generations: Technology was searching

for the killer app

5G NR technology cornerstones to meet

reliability and latency requirements of URLLC&V2X applications


app specific slices

Network Virtualization Robust coding

y1

y2

y3

y4

u1

x1 + +

+

+ u2

u3

u4

x2

x3

x4

Multipoint connectivity

Diversity in frequency and space

Minislots – short symbols Grant free access Mobile edge computing

frequence

Code, Power, ….

14s

7s

4s 2s

100 µs 1 ms

Minislots of 7, 4 or 2 symbols

15 kHz 30 kHz 60 kHz

500 µs

2020 2019

3GPP RAN 5G NR standardization overview


RAN #78 RAN #79

RAN #80 RAN #81 RAN #82 RAN #83

5G NR Phase 1: SA/NSA for eMBB/URLLC

5G NR Phase 2: Further NR use cases

1/2 L3

1/2 L3

1/2 L3

2018 2017

NSA Opt. 3

LTE-M/NB-IoT coexistence

Industrial IoT enhancements

V2x incl. enhanced use cases

NSA opt. 4&7

SA opt. 2&5

We help our customers to realize the vision of automated driving

with dedicated test solutions for the automotive market


Signal analysis for high-frequency radar signals

Determine the permissibility of radome material.

Testing of radars with echo generation

Reliable, automated test solutions for V2X

Emergency call - independently certified test solution

Testing in-vehicle communication networks

Rohde & Schwarz

Our solutions for all trends

in the automotive industry


Thank you very much!

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Busting the myths of cellular V2x communication by testing