How Vehicular Ad hoc Networks serves Smart City (Beihang University)

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How Vehicular Ad hoc Networks serves Smart City (Beihang University)

  1. 1. BUAA How Vehicular Ad hoc Networks Serves Smart City Dr Juhua Pu Beihang University
  2. 2. Guideline What is Vanet Why we need Vanet Research hot spot of Vanet Vanet and Smart City
  3. 3. What is Vanet Vanet: Vehicular Ad hoc Networks
  4. 4. What is Vanet for easy and effective communication between vehicles with dynamic mobility  uses WiFi IEEE 802.11 and  WiMAX IEEE 802.16 a form of Mobile ad-hoc network  Dynamic but not random mobility  moving in an organized fashion
  5. 5. What is Vanets Providing V2V and V2I communications  V2V: Vehicular to Vehicular communications  V2I: Vehicular to Infrastructure communications Widely used  traffic safety  comfort of driving and traveling  ……
  6. 6. Guideline What is Vanet Why we need Vanet Research hot spot of Vanet Vanet and Smart City
  7. 7. Why Vehicular Networks? • Safety  Traffic accident • Millions of Fatalities and Injuries(US2004: 42,800 vs. 2,800,000) • Thousands of Billions cost to society(US2004:230.6 billions)  Traffic jams • Traffic jams generate a tremendous waste of time and of fuel • Also increasing the pollution  Most of these problems can be solved by providing appropriate information to the driver or to the vehicle
  8. 8. Efficiency  Traffic jams waste time and fuel  In 2003, US drivers lost a total of 3.5 billion hours and 5.7 billion gallons of fuel to traffic congestion Profit  Safety features and high-tech devices have become product differentiators
  9. 9. Examples
  10. 10. Research institute and system TrafficView FleetNet & NOW CarTel Mobeyes CAR2CAR IntelliDrive
  11. 11. Guideline What is Vanet Why we need Vanet Research hot spot of Vanet Vanet and Smart City
  12. 12. Research Hot spot Framework Connectivity Mobility model Routing Data management Safety and security applications
  13. 13. routing Single cast vs. Multicast vs. Broadcast Single hop vs. multi hop Storage-carry-forward
  14. 14. Broadcast in heterogeneous Vanet directional broadcast (DBroadcast) regional broadcast (Rbroadcast) C D G H
  15. 15.  Broadcast storm Three main issues for broadcast in Vanet 152014-4-2  network partition  intersection broadcast storm partition intersction DBroadcast √ √ — RBroadcast √ √ √ A Beihang University A B C F D H G E
  16. 16. Heterogeneous Vanets Each vehicle has different communication radius  Vehicle changes proactively  Signal block etc.  Equipment Heterogeneity by Manufacturers  …… 2014-4-2 Beihang University 16 S A B C
  17. 17. Heterogeneity and the three main issues Broadcast storm 2014-4-2 Beihang University 17
  18. 18. Heterogeneity and the three main issues Network partition 2014-4-2 Beihang University 18
  19. 19. Heterogeneity and the three main issues Intersection broadcast 2014-4-2 Beihang University 19
  20. 20. Non-Redundant Communication Range Non-Redundant Communication Range NRCR Broadcast storm 2014-4-2 Beihang University 20
  21. 21. Isomeric Forward,IF Receiving HELLO message Receiving EVENT message 2014-4-2 Beihang University 21 A’s driving along EVENT forward direction B’s driving along EVENT forward direction B is farther than A along EVENT forward direction EVENT type Case no. What to do × × √ — a A changes to non-tail node × × × BROADCAST_NORMAL b ignore BROADCAST_TO_RELAY b A changes to non-tail node × √ — — c,d A changes to non-tail node √ × √ BROADCAST_NORMAL e A changes to non-tail node BROADCAST_TO_RELAY e Need more calculation √ — × — f,h ignore √ √ √ — g A changes to non-tail node B’s driving along EVENT forward direction B is farther than A along EVENT forward direction Case no. What to do √ — c,d Set EVENT type as BROADCAST_TO_RELAY and broadcast. A changes to non-tail node × √ a Setting EVENT type as BROADCAST_NORMAL and broadcast. A changes to non-tail node × × b ignore
  22. 22. Isomeric Carry,IC  BROADCAST_NORMAL EVENT  BROADCAST_TO_RELAY EVENT 2014-4-2 Beihang University 22 B Carrying B not Carrying B Carrying B not Carrying
  23. 23. Isomeric Intersection Broadcast,IIB Intersection Delay 2014-4-2 Beihang University 23 Loc. of sending node Loc. of receiving node What to do(sending) Receiving node gotten this EVENT What to do(receiving) intersection intersection intersection delay — carrying,directional broadcast while approaching intersection(farther than communication radius) intersection Bidirection road intersection delay √ ignore × carrying,directional broadcast while approaching intersection(farther than communication radius) Bidirection road intersection Directional broadcast √ ignore × Intersection delay Bidirection road Bidirection road Directional broadcast — Directional broadcast in the same road but block in different raods Loc. of sending node Loc. of receiving node What to do(sending) Receiving node gotten this EVENT What to do(receiving) intersection Intersection intersection delay √ carrying,directional broadcast while approaching intersection(farther than communication radius) × carrying,directional broadcast while approaching intersection(farther than communication radius) intersection Bidirection road intersection delay √ ignore × carrying,directional broadcast while approaching intersection(farther than communication radius) Bidirection road Intersection Directional broadcast √ ignore × Intersection delay Bidirection road Bidirection road Directional broadcast √ Directional broadcast in the same road but block in different raods × Directional broadcast in the same road but block in different raods
  24. 24. Evaluation(DBroadcast) 5 vpkm & 50 vpkm 2014-4-2 Beihang University 24
  25. 25. Evaluation(Rbroadcast) 5 vpkm & 50 vpkm 2014-4-2 Beihang University 25
  26. 26. Data management 教师试讲-学术报告 Beihang University Networks character Simu platform Replica Deletion Data Transmission Data Management Multicast Cooperative data dissermination Replica Deletion DTN+ Vanet MPEB, E-MPEB COTS SuDA, RAD BHU-VSim
  27. 27. Guideline What is Vanet Why we need Vanet Research hot spot of Vanet Vanet and Smart City
  28. 28. Applications for VANETs Public Safety Applications Traffic Management Applications Traffic Coordination and Assistance Applications Traveler Information Support Applications Comfort Applications Air pollution emission measurement and reduction Law enforcement Broadband services
  29. 29. Applications (details) • Congestion detection • Vehicle platooning • Road conditions warning • Collision alert • Stoplight assistant • Emergency vehicle • warning • Deceleration warning • Toll collection • Border clearance • Adaptive cruise control • Drive-through payment • Merge assistance
  30. 30. Vanets and smarty city Vanets can be an infrastructure of data collection for smart city 2014-4-2 Beihang University 30
  31. 31.  100,000 vehicle-mounted sensors covering the whole roads in the metropolis  More than 100,000 road links of all kinds of complexity level  Handle more than 500,000 GPS position points and related parameters each cycle Telematics-floating cars based information services system
  32. 32.  Show real-time traffic situation and congestion of the metropolitan road network in China for the first time  Provide users with local micro-city traffic information for the first time  The services include international well-known car company , mobile terminal manufacturers , mobile operators and internet companies. 2005 The first domestic internet dynamic traffic information service:Bei Jing Public transportation website The first domestic value-added mobile data service of dynamic traffic information 2006 2007 The first navigation equipment MIO C320T Carrying dynamic traffic information service 2008 The first Vehicle dynamic traffic information service: Nissan Teana First nationwide multi-city Roaming service Of dynamic traffic information : Beijing、Shanghai、 Guangzhou、Shenzhen First mobile internet dynamic navigation service 2009 The first domestic dynamic traffic service based on portals Dynamic traffic information service serve Olympic successfully 2010 The first domestic dynamic navigation equipment First vehicle interactive dynamic navigation service:G-BOOK Dynamic traffic information service serve Shanghai World Expo FAW、SAIC、 Toyota、nissan、 BMW、G.M. The Milestone of Industrialization
  33. 33. 宁波 沈阳 天津 成都 南京 重庆 泉州 福州 台州 温州 昆明 济南 长沙 武汉 南昌 合肥 郑州 西安 太原 苏州 北京 上海 广州 深圳 石家庄 大连 青岛 杭州 无锡 贵州省 广西省 西藏 新疆 呼和浩特 青海 吉林省 黑龙江省 金华 Content Sub-content Current Status Nr Basic Contents Traffic Flow and Prediction Real-time Information Beijing、Shanghai、Guangzhou、Shenzhen、Chengdu、Chongqing、Nanjing、Ningbo、 ShenYang、Tianjin、Suzhou、Fuzhou、Qingdao、Shijiazhuang、Changsha、Huhehaote、 Dongguan、Foshan, 、Chongqing、Nanjing、 Fuzhou、Kunming、 Quanzhou 、Taizhou 、Wuxi、 Zhongshan、Jinhua、Wuhan、Wenzhou、Xiamen、Changchun 33 Prediction InformationBeijing、Shanghai、Shenzhen 3 Traffic Event Beijing、Shanghai、Guangzhou、Shenzhen、TianJin 5 Content Current Status Nr Advanced Contents Parking Information Shanghai 1 Creative Traffic Information Representation Current Status Nr Simplified Graphic Traffic Information Beijing、Shanghai、Guangzhou、Shenzhen 4 •2008:4 metros of BeiJing, ShangHai, GuangZhou, ShenZhen •2009:Increasing 6 cities: •2010: Increaseing 12cities •2011: Increaseing 10 cities, major inter- connecting motorways of China 东莞 佛山 Service Coverage
  34. 34. ES240/350 RX350/450h LX 570 Crown Camry Terminal Telecom operators TEANAG25/37 Sedan G37 Coupe G37 Convertible EX25/35 Websites IOV/Telematics service LS600HL Manufacturers • Providing data to Toyota, Nissan, GM and other brand • Providing data to mobile devices made , such as Jiaming, Nokia and other manufacturers. • Providing data to China Mobile and China Telecom's • The real-time traffic services provided by them have reaches to millions. Industry Customer

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