InVANET(Intelligent Vehicular Ad Hoc Network

Sandesh Pandey, Ramesh Basukala and Sumit Joshi

Introduction

Introduction

InVANET is an Intelligent Vehicular Ad Hoc

Networking uses WiFi IEEE 802.11 and WiMAX IEEE 802.16

for easy and effective communication between vehicles with dynamic mobility.

Introduction VANET, is a form of Mobile ad-hoc

network, to provide communications among nearby

vehicles and between 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.

Introduction Providing

vehicle-to-vehicle and vehicle-to-roadside communication

can considerably improve traffic safety and comfort of driving and traveling.

Introduction Each 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.

Mobile IPv6 Mobile IPv6 is a widely accepted solution

to provide session continuity and reachability to the Internet for mobile nodes.

Mobile IPv6 Mobile IPv6 proxy-based architecture

selects the optimal communication mode direct in-vehicle, vehicle-to-vehicle, and vehicle-to-roadside communication

provides dynamic switching between vehicle-to-vehicle and vehicle-to-roadside communication mode

Model for InVANET

Goal of InVANET The main goal of VANET is to provide safety

and comfort for passengers.

Communication between vehicles can be used to realize driver support and active safety

services like collision warning, up-to-date traffic and weather information or active navigation systems.

Examples There are also

multimedia and internet connectivity facilities

for 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.

Characteristics Lack of pre-configuration, meaning

network configuration and management must be automatic and dynamic.

Node mobility, resulting in constantly changing network topologies.

Multi-hop routing.

Characteristics Resource 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

Advantages Inter-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.

Challenges Scability of protocol

Introduction of Security

High-Speed Real-Time Communication

Scenario

Scenario Several 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.

Scenario – Safety use cases Cooperative Forward Collision Warning

Pre-Crash Sensing/Warning

Hazardous Location V2V Notification

Scenario – Traffic Efficiency use cases Enhanced Route Guidance and Navigation

Green Light Optimal Speed Advisory

V2V Merging Assistance

Scenario – Infotainment and Others use cases Internet Access in Vehicle

Point of Interest Notification

Remote Diagnostics

Technical Prerequisites and Constraints Anonymity and Data Security Effective Protected Frequency Band Scalability Mandatory Sensor Data

Architecture

two approaches can be taken. Layered Approach and

Un-layered Approach

Layered Approach

protocols fulfill small, well-defined tasks and form a protocol stack

Un-layered Approach

All application and communication protocols are placed in one single logical block

Research efficient message dissemination, network scalability, and information security mechanisms

Conclusion In 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.

Conclusion

Question 1 In 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?

Question 2 Vehicles 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?

Question 3 The 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.

Question 4 Is the network expandable? How did the

cars in the network and the terminals maintain the flow control in the network?