Vehicle Area Network
description
Transcript of Vehicle Area Network
Vehicle Area Network
Zhang Ju
2014- 5-2
2
Outline
Introduction to Vehicle Area Network Protocol stack of VAN Performance analysis Applications The Future
3
4
Definition
local area network in and around a moving vehicle
provide wireless access in vehicular environments
5
Definition
Classification —Inter VAN , Intra (In-Vehicle) VAN [1]
Technology —Bluetooth, WIFI, 3G, Vehicle Ad-hoc Network , RFID
Standardised in ISO 11519-3
Spectrum Allocation —5.850-5.925GHZ, 7channels(USA)
vehicle-to-vehicle safety
high-power, longer-distance communication
6
Why is VAN needed ?
Passenger needs
VAN
ITSIntelligent Transportation Systems
Real-time Accurate Efficient
Passenger experience
Active road safety applicationsActive road safety applications
Traffic efficiency and management applicationsTraffic efficiency and management applications
Infotainment applicationsInfotainment applications
Energy consumption
Traffic accident
Traffic congestion
7
Intra (In-Vehicle) VAN
Data communication network of onboard equipment (OBE)
In-Vehicle Data Collection/Analysis Systems In-Vehicle Communication Network [1]
Assess a driver’s behavior or a vehicle’s performance Assist drivers to respond correctly Infotainment
8
Inter VAN Network of vehicles that interact with one another
and with infrastructure to transmit and receive data [2]
Include vehicle-to-vehicle (V2V) vehicle-to-broadband cloud (V2B ) vehicle-to-roadside-infrastructure (V2I )
Provide obstacle detection navigation data weather conditions and accident locations Global Internet services
9
researches and projects
energy consumption
apply advanced technology
increase highway capacity
enhance public safety
reduce traffic congestion
Partners for Advanced Transit and High-ways (PATH)
10
researches and projects
conduct demonstrations and operational tests
speed up deployment of communication/ navigation technologies
improve transportation safety
improve mobility features
SafeTrip-21 (Safe and Efficient Travel through Innovation and Partnerships for the 21st Century)
11
researches and projects
Tokyo Smartway project (Japan) develop intelligent roads for the 21st century enable automated driving using ITS technologies
Electronic Road Pricing project (Singapore ) construct a comprehensive road network
12
13
Architecture of VAN ITS projects, architecture and standards of VAN
depend on area [3]OBE—On Board EquipmentSDN —Service Delivery NodeRSE —Road-Side EquipmentENOC—Enterprise Network Operation Center
IntelliDrive ITS architecture(USA)
14
Architecture of VAN
V2I communications
V2V communications
V2B communications
US DOT National ITS Architecture [3]
In-Vehicle service
15
WAVE Protocol Stack
802.11p802.11p
802.11802.11 1609.41609.4
802.2802.2
1609.31609.3
1609.21609.2
1609.31609.3
1609.11609.1
support the communication of data
manage and maintain the network diagnostics, synchronization discovery and association of neighboring devices
1609.41609.4
1609.41609.4
802.11802.11
802.11p802.11p
relations and dependencies
16
WAVE protocol stack
Major Involved Organizations American Society for Testing and Materials (ASTM) IEEE
IEEE 1609.1 IEEE 1609.2 IEEE 1609.3 IEEE 1609.4
IEEE 802.11 ASTM E2213-03 IEEE 802.11p
The IEEE Task Group p
17
WAVE protocol stack
IEEE 802.11p released in November 2010-11 Based on ASTM E2213-03 add wireless access in vehicular environments support ITS applications Apply to V2V and V2I
ASTM E2213-03 standard specification for telecommunications and information exchange between roadside and vehicle systems
18
WAVE protocol stack IEEE 802.11p —physical layer [3]
guard interval 1.6 µsDoppler spread 156.25 kHzguard interval 1.6 µsDoppler spread 156.25 kHz
VAN Doppler spread up to 2 kHz RMS delay spread of up to 0.8 µs VAN Doppler spread up to 2 kHz RMS delay spread of up to 0.8 µs
low bit error rateshighly reliable communicationlow bit error rateshighly reliable communication
IEEE 802.11p —MAC layer
prioritization of important safetytime-critical messages
enhanced distributed channel access
quality of service (QoS) support
19
WAVE protocol stack
IEEE 1069.4 —MAC layer
provide extensions to MAC supports multichannel WAVE operations
ACI--importance and urgency of its content
0 -- regular access
1 --non-prior background Traffic
2,3 --reserved for prioritized messages
Scheme of enhanced distributed channel access
allow prioritization of frames
20
WAVE protocol stack IEEE 1609 [4]
a family of standards for WAVE architecture, organization management structure communication model security mechanisms and physical access
IEEE 1069.1 resource manager define the communication formats (command
message and data storage formats ) mobile platforms supported
21
WAVE protocol stack
IEEE 1069.2 security issues in WAVE
IEEE 1609 .3 supports secure message data exchange Define Management Information Base(MIB)
for the WAVE protocol stack
22
23
Performance analysis
Architecture of the overhauled IEEE 802.11 implementation of the network simulator NS-2 [3]
Simulation configuration parameters
24
Performance analysis
Probability of successful message reception when only one node is sending
25
Performance analysis
transmission power: 20 dBm
packet generation rate:5 packets/s
Impact of vehicle density
Impact of transmission rate
vehicle density: 96 vehicles/km transmission power: 10 dBm
Impact of transmission power
vehicle density: 96 vehicles/km packet generation rate: 5 packets/s
26
27
Intelligent Transportation Systems
IVHS of America, VICS of Japan
Efficient communicationIntelligent traffic managementinformation services
28
Anti-collision system Camera + monitor or phone software [5]
Anti-collision systems using camera
29
Automatic parking
Ultrasonic sensor
Distance 40cm
Detect parking space
automation steering wheel operation
30
31
The Future combine wireless local and wide area network
technologies IP-centric devices, sensors, signal processing, and
driver behavior analysis techniques collect driver/car/ road data quickly analyze and share the information reliable and informative communication
32
Reference[1] Miad Faezipour, Mehrdad Nourani, Adnan Saeed, Sateesh
Addepalli. Progress and Challenges in Intelligent Vehicle Area Networks [J]. Communications of The ACM, 2012, 55(2): 46-56.
[2] Georgios Karagiannis, Onur Altintas, Eylem Ekici, et al.Vehicular Networking: A Survey and Tutorial on Requirements,Architectures, Challenges, Standards and Solutions [J]. IEEE COMMUNICATIONS SURVEYS AND TUTORIALS , 2011, 13(4): 65-97.
[3] Y. L. Morgan. Notes on DSRC & WAVE Standards Suite: Its Architecture, Design, and Characteristics[J]. IEEE COMMUNICATIONS SURVEYS AND TUTORIALS , 2010, 12(4): 78-82.
[4] Hannes Hartenstein, Kenneth P Laberteaux. VANET:Vehicular Applications and Inter-Networking Technologies [M]. John Wiley & Sons, 2010. 15-46.
[5] http://www.iova.com.