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Vehicle Area Network

Vehicle Area Network. Zhang Ju 2014- 5-2. Outline. Introduction to Vehicle Area Network Protocol stack of VAN Performance analysis Applications The Future. Introduction to. Vehicle Area Network. Definition. local area network in and around a moving vehicle.

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Vehicle Area Network

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  1. 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. Introduction to Vehicle Area Network

  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. VAN Why is VAN needed ? Real-time Accurate Efficient Passenger needs Traffic congestion Passenger experience Intelligent Transportation Systems Traffic accident ITS Active road safety applications Energy consumption Traffic efficiency and management applications Infotainment applications

  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 Partners for Advanced Transit and High-ways (PATH) apply advanced technology increase highway capacity enhance public safety reduce traffic congestion energy consumption

  10. researches and projects SafeTrip-21 (Safe and Efficient Travel through Innovation and Partnerships for the 21st Century) conduct demonstrations and operational tests speed up deployment of communication/ navigation technologies improve transportation safety improve mobility features

  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. Protocol Stack of VAN

  13. Architecture of VAN • ITS projects, architecture and standards of VAN depend on area [3] OBE—On Board Equipment SDN —Service Delivery Node RSE —Road-Side Equipment ENOC—Enterprise Network Operation Center IntelliDrive ITS architecture(USA)

  14. Architecture of VAN V2B communications In-Vehicle service V2I communications V2V communications US DOT National ITS Architecture [3]

  15. WAVE Protocol Stack support the communication of data 1609.1 • manage and maintain the network • diagnostics, synchronization • discovery and association of neighboring devices 1609.3 1609.4 802.2 1609.3 relations and dependencies 802.11 1609.4 1609.4 802.11 1609.2 802.11p 802.11p

  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 The IEEE Task Group p ASTM E2213-03 IEEE 802.11p IEEE802.11

  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] • IEEE 802.11p —MAC layer VAN Doppler spread up to 2 kHz RMS delay spread of up to 0.8 µs prioritization of important safety time-critical messages guard interval 1.6 µs Doppler spread 156.25 kHz enhanced distributed channel access quality of service (QoS) support low bit error rates highly reliable communication

  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 allow prioritization of frames Scheme of enhanced distributed channel access

  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. Performance Analysis

  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 • Impact of vehicle density transmission power:20 dBm packet generation rate:5 packets/s • Impact oftransmission rate vehicle density: 96 vehicles/km transmission power: 10 dBm • Impact oftransmission power vehicle density: 96 vehicles/km packet generation rate: 5 packets/s

  26. Applications

  27. Intelligent Transportation Systems • IVHS of America, VICS of Japan Efficient communication Intelligent traffic management information services

  28. Anti-collision system • Camera + monitor or phone software [5] Anti-collision systems using camera

  29. Automatic parking automation steering wheel operation Detect parking space Distance 40cm Ultrasonic sensor

  30. The Future

  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 safe secure pleasant driving environment

  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 Applicationsand Inter-Networking Technologies [M]. John Wiley & Sons, 2010. 15-46. [5] http://www.iova.com.

  33. Thank you !

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