Secure Opportunistic Routing for Vehicular Adhoc Networks

Secure Opportunistic Routing for Vehicular Adhoc Networks

Harsha Vasudev, Debasis Das
DOI: 10.4018/978-1-5225-3870-7.ch015
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More study is needed to make VANETs more relevant. Opportunistic routing (OR) is a new model that has been proposed for wireless networks. OR has emerged from the research communities because of its ability to increase the performance of wireless networks. It benefits from the broadcast characteristic of wireless mediums to improve network performance. The basic function of OR is its ability to overhear the transmitted packet and to coordinate among relaying nodes. In this chapter, an exhaustive survey of existing OR protocols is done by considering various factors. More precisely, existing secure OR protocols are deliberated. Future directions of research are also included, which provide a superior way to overcome some of the limitations of these existing protocols. Through this detailed survey, an outline and in-depth knowledge of existing OR protocols can be acquired.
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With the growing importance of useful, harmless, and high-efficient transportation, Vehicular Adhoc Networks (VANETs) have turned into acute technology in smart transportation systems. In recent years VANETs has been observed as one of the key enabling technologies to provide a wide variety of services, such as road safety, enhanced traffic and travel efficiency, convenience and comfort for travellers and drivers. VANETs technology has emerged as an important research area over the last few years. It is an active research area right now and evolving type of network aimed at improving safe driving, traffic optimization, and some other services through either Vehicle to Vehicle communication (V2V) or Vehicle to Infrastructure communication (V2I). They are created by applying the principles of Mobile ad hoc networks (MANETs), the spontaneous creation of a wireless network for data exchange to the domain of vehicles. These networks have no fixed infrastructure, dynamic in nature and instead rely on the vehicles themselves to provide network functionality. Being ad-hoc in nature, VANETs is a type of networks that is created from the concept of establishing a network of cars for a specific need or situation. In straight road or highway road, it is a sparse network. Depends upon time the network may become dense. But in intersection or junction road, it is always be dense network. Figure 1 shows a highway road and Figure 2 shows a 4-way intersection road.

Figure 1.

Highway Road


Modern advances in hardware, software, and communication technologies are allowing the design and implementation of a whole range of dissimilar types of networks that are being organised in various environments. One such network that has received a lot of interest in the recent years is the VANETs. VANETs has become an active area of research, standardization, and development because it has incredible potential to improve vehicle and road safety, traffic effectiveness, and convenience as well as comfort to both drivers and passengers. Recent research efforts have placed a strong emphasis on novel VANETs design architecture and implementations. A lot of research work have done in the area of VANETs, which focused on specific areas including routing, broadcasting, Quality of Service (QoS), security etc. In this paper, a comprehensive survey considering all these factors is done. Figure 3 shows an example of VANETs communication. In the figure, the first vehicle, which is ahead informs the following vehicle that there is a problem in the road and should take alternate path. This security information passed between all following vehicles through VANETs communication system. It is also possible that, the source vehicle (means vehicle which is ahead) will pass the message to all the following vehicles if all the vehicles are within DSRC with the source vehicle.

Figure 2.

Four Way Intersection

Figure 3.

VANETs communication example


Key Terms in this Chapter

Opportunistic Routing: New promising paradigm that has been proposed for wireless networks, which increases the performance of wireless networks.

Vehicular Adhoc Networks (VANETs): The spontaneous creation of a wireless network for data exchange to the domain of vehicles.

Malicious Vehicle Detection: Faulty vehicles forwards wrong information to others; identifying these vehicles is a major issue.

Trust Factor: All vehicles in the DSRC must have a valid trust factor for participating in the further communication process.

Intelligent Transportation System (ITS): Advanced application that provides innovative services related to different modes of transport and traffic management.

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