CommTech Talks: Vehicle-to-Vehicle Communications in LTE and beyond

vehicle-to-vehicle
communications
in lte and beyond
Gino Masini, MBA
Ericsson AB
Systems and Technologies
Politecnico di Milano
April 27, 2016 – 17:00
Sala Conferenze – DEIB

EAB/FJT/GA Gino Masini | 2016-04-28 | Page 2
› From connected cars to Intelligent Transportation Systems
› Road safety services
› Technology
› LTE for vehicles
› Let’s hit the road!
Summary

“… You could make telephone calls from
the car… there were two long sticks, like
fishing rods, handled by Hilda. She
would hook them over a pair of
telephone wires, seeking a pair that were
free... When they were found, Lars
Magnus would crank the dynamo handle
of the telephone, which produced a
signal to an operator in the nearest
exchange.”
The Ericsson Chronicle
connected cars, circa 1910

› Intelligent Transportation Systems (ITS)
– Improved road safety, traffic optimization,
sustainability, convenience for citizens
– Standardized solutions
– Goal: “Good for society”
› Automotive
– Value-added services to car owners
– Car OEM solutions
– Goal: “Brand loyalty”
Automotive and ITS

› Commercial services for connected cars
– Connected navigation and infotainment
– Stolen vehicle tracking
– Vehicle diagnostics
– Remote control of vehicle functions
– Software upgrades over the air
– …
› Primarily driven by vehicle OEMs
› OEM proprietary protocols over mobile broadband
Automotive

connected service booking
› Collected vehicle data shared
with repair network
› Regular, proactive
maintenance

in-car payments
› Navigation and parking
aggregators in the cloud help to
find free parking space
› “Book, navigate and pay” in the
car head unit

delivery of goods
› “Use your car as a delivery
space for goods”
› “Find car”, “digital key”
functions authorized to be used
by delivery companies

car-to-infrastructure comms
› Data collected from vehicles
sent to cloud, shared with
authorities, and used to warn
other cars in same areas
– e.g. slippery road
› Vital for self-driving cars

cooperative intelligent
transportation systems (C-ITS)
› Improved road safety, traffic management and optimization
› Primarily driven by public authorities
› Many actors
– Drivers
– Pedestrians
– Vehicle OEMs
– Road authorities
– Public safety authorities
– Communication providers
– …
› Connectivity over dedicated Vehicle-to-Everything (V2x) communications
Traffic
Management
Center


› Presence notification
– “Here I am”
› Event-based notification
– e.g. “I’m hitting the brakes”
› Vulnerable road users
– e.g. pedestrians, cyclists: “Watch out, I’m approaching”
› Emergency vehicle warning
– “Ambulance coming through!”
› Road infrastructure, traffic info, flow management
– Road signs, traffic lights, real-time congestion warning
› Connected automation
– Platooning, autonomous driving
some examples of services

Example:C-ITS Service types
1. automatic SHARING
Connected
Traffic Cloud
Traffic
Authority
TRAFFIC
MANAGEMENT
Sharing aggregated anonymous data
Connected Traffic
Management
Connected Traffic
Safety
OEM
SLIPPERY
ROAD
SLIPPERY
ROAD
SLIPPERY
ROAD
SLIPPERY
ROAD
SLIPPERY
ROAD
FLEET FLEET
Waze

Example:C-ITS Service types
2. traffic management reaching out
Connected
Traffic Cloud
Traffic
Authority
TRAFFIC
MANAGEMENT
Sharing aggregated anonymous data
Connected Traffic
Management
Connected Traffic
Safety
SLIPPERY
ROAD
SLIPPERY
ROAD
SLIPPERY
ROAD
SLIPPERY
ROAD
SLIPPERY
ROAD
SLIPPERY ROAD
OEM
FLEET FLEET
Waze

› OBU – OnBoard Unit
› RSU – Road Side Unit
› V2V – Vehicle-to-Vehicle
› V2I – Vehicle-to-Infrastructure
› V2P – Vehicle-to-Pedestrian
› V2N – Vehicle-to-Network
› V2x – Vehicle-to-Everything
C-ITS terminology

› ETSI
– CAM (Cooperative Awareness Message)
– DENM (Decentralized Environmental Notification Message)
› IEEE (DSRC, Dedicated Short Range Communication, unlicensed 5.9 GHz band)
– BSM (Basic Safety Message)
– SPaT / MAP (Signal Phase and Timing / intersection geometric description)
ETSI-IEEE cooperation / alignment is ongoing
standards tracks

use cases (3gpp TR 22.885)

service requirements
Service Payload / Latency Trigger type / Frequency
S: CAM
(notify the presence, aka “here I am”)
400 bytes
<100 ms
Periodic / 10 Hz
S: DENM
(event-based notification, e.g., brake)
100-1000 bytes
<100 ms
Event / 1 Hz
S: CAM + DENM in very high mobility and high vehicle density < 1600 bytes
< 5 ms
Event + Periodic / 1Hz
S: vulnerable road users (pedestrians, cyclists: “Watch out, I’m
approaching”)
400 bytes
<100 ms
Periodic /1 Hz
S: Emergency vehicle warning (“Ambulance coming through!”) 400 bytes
<100 ms
Event /10 Hz
E: Road infrastructure, traffic info and flow mgmt (road signs,
congestion notification, real-time traffic advice)
100-1000 bytes
< 100 ms
Event/ 10 Hz
C: Connected automation (platooning, autonomous driving, …) 100-1000 bytes
<100 ms
Periodic + Event / 10 Hz
C: fleet management (Management of company vehicles) 400 bytes
<500 ms
Event / 1 Hz

Traffic generation is affected by vehicle speed, direction, distance, …
road conditions  data Traffic

› Direct communication must be possible
regardless of infrastructure coverage
› Steering between infrastructure and direct
connections based on user / radio conditions
› Need to be reliable regardless of infrastructure
coverage
› Need to scale for large numbers of vehicles in
the same area
› Must support high relative speed between
vehicles
technology: Critical issues

› Direct device-to-device communications supported (ProSe, Proximity Services)
– Both in- and out-of-coverage
› Broadcast Multimedia Broadcast/Multicast Service (eMBMS) over SFN (Single-
Frequency Network)
– Optimizing coverage also in tight spots
connecting the dots with lte

› Devices discover each other and communicate directly
– Out-of-coverage: using pre-configured parameters
– In-coverage: assisted by network
For V2x: QoS support for D2D link; no need for discovery;
enhanced L1
Direct Device-to-device
D2D direct discovery

› Establishes a Single-Frequency Network
(SFN) configuration
› More efficient than unicast for large
populations of connected vehicles
› Increased coverage through SFN
combination gain
MBMS – broadcast over lte
Example: Dense German city, single site, 2.8 bit/s/Hz TX mode
>95% service probability within 10 km
>95% service probability from 93% of area in 10-20 km range
For V2x: multiplexing of messages transmitted by vehicles

› Licensed spectrum, owned by a single Operator / Authority
– Reserved for ITS services or shared with other commercial services
› Licensed spectrum, shared by multiple Operators / Authorities
– Reserved for V2x services
› Unlicensed spectrum
– Shared between different technologies (e.g., LTE, DSRC, …)
the spectrum dilemma

let’s hit the road
› Kista Mobility Week (25-29/4)
› Electric driverless buses
– Automated
– Uses 5G technology components
– Live camera feed and position data to
remote center
› Test site for Drive Sweden
– Strategic innovation program
http://www.drivesweden.net/en

› V2x enables smart mobility to transform transportation around the world
› Huge opportunity for innovation, combining ICT and automotive industries
– Not just connected cars
› Building blocks provided by LTE
– 3GPP Rel-14 frozen in 2017
› Critical for driverless vehicles but also beneficial to today’s drivers and
passengers
final messages

CommTech Talks: Vehicle-to-Vehicle Communications in LTE and beyond

CommTech Talks: Vehicle-to-Vehicle Communications in LTE and beyond

Empfohlen

Empfohlen

Weitere ähnliche Inhalte

Was ist angesagt?

Was ist angesagt? (20)

Andere mochten auch

Andere mochten auch (19)

Ähnlich wie CommTech Talks: Vehicle-to-Vehicle Communications in LTE and beyond

Ähnlich wie CommTech Talks: Vehicle-to-Vehicle Communications in LTE and beyond (20)

Mehr von Antonio Capone

Mehr von Antonio Capone (14)

Kürzlich hochgeladen

Kürzlich hochgeladen (20)

CommTech Talks: Vehicle-to-Vehicle Communications in LTE and beyond