3 Introduction InVANET is an Intelligent Vehicular Ad Hoc Networking uses WiFi IEEE andWiMAX IEEEfor easy and effective communication between vehicles with dynamic mobility.
4 Introduction VANET, is a form of Mobile ad-hoc network, to provide communications among nearby vehicles andbetween vehicles and nearby fixed equipment, usually described as roadside equipment.In intelligent vehicular ad hoc network, rather than moving at random as in MANET vehicles tend to move in an organized fashion.
5 Introduction Providing vehicle-to-vehicle andvehicle-to-roadside communicationcan considerably improve traffic safety and comfort of driving and traveling.
6 IntroductionEach vehicle equipped with VANET device will be a node in the Ad-Hoc network and can receive and relay others messages through the wireless network.Each node in the ah-hoc network functions as the router to another node.The terminals act like repeaters that relay the information packets flying back and forth about the ad-hoc network from one mobile terminal to the next.
7 Mobile IPv6 Mobile IPv6 is a widely accepted solution to provide session continuity andreachability to the Internet for mobile nodes.
8 Mobile IPv6 Mobile IPv6 proxy-based architecture selects the optimal communication modedirect in-vehicle,vehicle-to-vehicle,and vehicle-to-roadside communicationprovides dynamic switching betweenvehicle-to-vehicle andvehicle-to-roadside communication mode
10 Goal of InVANETThe main goal of VANET is to provide safety and comfort for passengers.Communication between vehicles can be usedto realize driver support and active safety services likecollision warning,up-to-date traffic andweather information oractive navigation systems.
11 Examples There are also multimedia andinternet connectivity facilitiesfor passengers, all provided within the wireless coverage of each car.Automatic payment for parking lots and toll collection are other examples of possibilities inside VANET.
12 CharacteristicsLack of pre-configuration, meaning network configuration and management must be automatic and dynamic.Node mobility, resulting in constantly changing network topologies.Multi-hop routing.
13 CharacteristicsResource limited devices, e.g. laptops, PDAs and mobile phones have power and CPU processing constraints.Resource limited wireless communications, e.g. reduced to 10's of kilobits per second by the fact that many nodes must share the radio medium.Potentially large networks, e.g. a network of sensors may comprise thousands or even tens of thousands of mobile nodes
14 AdvantagesInter-vehicular communication services such as intersection collision warning, local danger warning, and the de-central dissemination of real-time traffic flow information.The mobile terminals not only provide a function for information transmission and reception but also provide a function for information relay i.e. provides the function of router.Ad-hoc network provides anytime, anywhere access environment.
15 Challenges Scability of protocol Introduction of Security High-Speed Real-Time Communication
17 ScenarioSeveral actors involved in inter – vehicular ad hoc network are:The drivers, which benefit from the system by receiving warning messages and route recommendations.Road operators, who receive traffic data and are therefore enabled to control the traffic in a more efficient way.Hotspot and Internet service providers, who can attach vehicle communication systems e.g. at gas stations.
19 Scenario – Traffic Efficiency use cases Enhanced Route Guidance and NavigationGreen Light Optimal Speed AdvisoryV2V Merging Assistance
20 Scenario – Infotainment and Others use cases Internet Access in VehiclePoint of Interest NotificationRemote Diagnostics
21 Technical Prerequisites and Constraints Anonymity and Data SecurityEffective Protected Frequency BandScalabilityMandatory Sensor Data
22 Architecture two approaches can be taken. Layered Approach and Un-layered Approach
23 protocols fulfill small, well-defined tasks and Layered Approachprotocols fulfill small, well-defined tasks andform a protocol stack
24 Un-layered Approach All application and communication protocols are placed in one single logical block
25 Research efficient message dissemination, network scalability, and information security mechanisms
26 ConclusionIn InVANET, vehicles can communicate with the roadside communication infrastructure and also among each other.A vehicle is not only information source or sink, but also information distributor.The communication services enable a wide range of applications, ranging from road safety and traffic efficiency, driving comfort and infotainment.
28 Question 1In Intelligent Vehicular AdHoc network (InVANET), vehicles are enabled to communicate among themselves i.e. V-2-V. It is explained that V-2-V enables communication for small to medium distances and at locations even where roadside access points are not available. Are we assuming that all the vehicles on the road will be equipped with communication/networking capabilities? If not, how realistic is InVANET?
29 Question 2Vehicles move in certain speeds. We have roads or highways which have various speed limitations. Does InVANET impose any restriction on the speed of a vehicle for its smooth operation?
30 Question 3The basic safety message spreading in a vehicular network consists of event warning message. But there are scenarios when message need to be delivered to specific areas example, to the end of a traffic jam queue so that arriving vehicles have the option of taking another route before getting stuck. How can the vehicular network support the secure routing?any two nodes that wish to communicate securely can simply establish a priori a shared secret, to be used by their routing protocol modules.
31 Question 4Is the network expandable? How did the cars in the network and the terminals maintain the flow control in the network?External Management – external management plane symbolizes a configuration interface to set long-term system settings.