LTE-V
Solution for Connected Vehicles
Zhang Ying
28th July. 2015
Contents
1
Applications and requirements of connected vehicles
2
LTE-V: system solution and prototype
3
Datang’s practice on connected vehicles
Connected Vehicles -- Concept
Connected
Vehicles:
Systems include advanced information,
communication, sensor and control technologies, which can collect
and exchange information among vehicles and roadside units. By
cooperation and sharing information, the systems can improve the
safety, sustainability, efficiency and convenience of our transportation
network. It is the extension of IOT in ITS field.
Applications of Connected Vehicles
Road Safety
ŠEmergency electronic
Brake Lights
ŠBlind spot warning
ŠIntersection movement
assist
ŠForward collision warning
Traffic Efficiency
ŠElectronic Toll Collect
ŠIn‐vehicle signage
ŠTraffic information and
recommended itinerary
ŠTraffic light optimal
speed advisory
Infotainment
ŠInsurance and financial
Services
ŠRemote Diagnosis
ŠMedia downloading
ŠPoint of interest
notification
Communication Requirements of
Applications
Road Safety
Traffic Efficiency
Infotainment
Small packet
Low latency
High reliability
Big packet
Latency insensitive
Error tolerable Direct Communication
Cellular Communication
z Diverse applications lead to various requirements
z Single communication technology can not meet all kinds of requirements
Contents
1
Applications and requirements of connected vehicles
2
LTE-V: system solution and prototype
3
Datang’s practice on connected vehicles
Evolution of Communication Technologies
Cellular Communication
High speed
optimization
D2D communication
enhancements
Heterogeneous
network
enhancements
Direct Communication
Controllable
network
Security
Interference
coordination
Flexible, Reliable, Scalable
and Cost Efficient Network
Overview of LTE-V
Based on
TD-LTE
Customized
ITS solution
LTE-V：TD-LTE based V2X system
solution for connected vehicles/ITS
8
LTE‐V‐Cell：TD‐LTE centralized enhancements
LTE‐V‐Direct：TD‐LTE decentralized design
• Large market scale Road Safety
support
LTE‐V‐Cell
LTE‐V‐Cell
LTE‐V‐Direct
LTE‐V‐Cell
LTE‐V‐Direct
LTE-V: Key Technologies
Architecture for
Centralized Network
Architecture for
Decentralized Network
LTE‐V‐Cell
LTE‐V‐Direct
Local Lightweight
Broadcast
Slotted MAC:
Flexible and Reliable
LTE‐V
N-1
0
1
2
...
N-2
N-1
0
1
2
...
N-2
N-1
0
1
2
LTE-V: Performance
Transmission Reliability
15~25% higher than IEEE 802.11p
Capacity
257% higher than unicast
39% higher than broadcast
Architecture of Prototype System
11
LTE-V Demo
Demo •
•
Partners: Tsinghua
university, Chang An automaker
Equipments: 9 OBU nodes and 3 RSU nodes with LTE-V devices
Real Road Demo
OBU
LTE‐V prototype
RSU
Use cases supported by LTE-V Demo
Cat
Use cases
„Lane change assistance
„Co‐operative forward collision warning
V2V „Crash avoidance at the intersection without traffic light
„Approaching Emergency Vehicle Warning V2I
„Traffic light optimal speed advisory
„Roadwork warning and Hazardous location notification
„Collision Risk Warning from RSU
„Vulnerable road user Warning based on detection by RSU
„Special group warning based on detection by RSU
37
8
终点
9
6
4
1
5
2
8
9
RSU
起点
RSU
Contents
1
Applications and requirements of connected vehicles
2
LTE-V: system solution and prototype
3
Datang’s practice on connected vehicles
Overview of Datang Group
„A Chinese high-tech enterprise,
focusing on information
communications technology,
equipment and solutions;
„Three Subsidiaries are listed on
Shanghai, Shenzhen, New York &
Hong Kong stock exchanges;
„Total number of patents is over 14000,
with annual growth rate of 38%;
„ Proposed TD-SCDMA international
3G standard, leading TD-LTE/TD-LTEAdvanced international 4G standard
and future 5G research.
Products of connected vehicles
Terminal
SW platform
Industry Solutions
Chipset
Value‐added service
Promoting Standardization and industrialization of LTE-V
Organizations
Technology
advantages
Industrialize advantages
Based on the technology research and industry
of TD-LTE, We will actively promote the
standardization and industrialization of LTE-V
with deep understanding of connected vehicles.