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1

An Active Broadcast System for Safety-Oriented Facilities in Decentralized TDMA Assisted VANETs

Tamilarasi A., Sivabalaselvamani D., Rahunathan L., Adhithyaa N.

Advances in Science and Technology. Research Journal

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2022

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Vol. 16, no 1

122--128

EN

In data link layer for vehicular Ad hoc Network, a twelve digit access control mechanism is available. That is Medium Access Control (MAC) protocol should be able to accommodate a wide variety of safety oriented real time applications in vehicular ad-hoc networks (VANETs). The most important aspect of those applications is the transmission safety messages in which we call it as Basic Safety Messages (BSMs) through V2V and V2I systems. When traffic thickness is heavy, a scheduled transfer of BSMs places a large load on the VANETs’ stack, compromising network compatibility and performance. This article addresses a Decentralized TDMA-based framework for regulating transmission boundaries in VANETs to increase the potential of BSM transmissions. The transmitting effects are often low, but they do not reduce the consciousness of the nodes in close proximity. Consolidating packet collisions are often observed and cutoff at that time by a concerted effort among the nodes. Our procedures will provide a profitable and efficient BSM broadcasting, according to the simulation results.

2

Efficient Mechanism to Exchange Relevant Messages in Vehicular Ad Hoc Networks

Rahim A., Kong H. Y., Sher M.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 3a

98--102

EN

Broadcast is the commonly used technique for data dissemination in VANETs .It requires unicast and multicast protocols for connectivity and maintenance of path. Broadcast has the problem of surplus data. In order to resolve it, we modify the” Hello” packet of Optimized Link State Routing Protocol (OLSR) and add a new parameter called preference list. It contains the interest of the vehicle and data which current vehicle has. Due to mobility, there is very short time available for data exchange and limited messages are only communicated according to neighbour preference. We evaluate the modified OLSR with the help of Network Simulator in VANETs scenario. So in this way, surplus data and network load is reduced.

PL

W artykule przedstawiono zmodyfikowany protokół transmisji danych OLSR z dodatkiem tzw. listy preferencji, który wykorzystywano w sieci typu VANET. W związku z mobilnością elementów, możliwa jest tylko krótkoterminowa wymiana danych w ograniczony sposób, wysyłanie wiadomości. Proponowane rozwiązanie pozwala na redukcję danych nadwyżkowych i obciążenia sieci.

3

Robust distributed privacy-preserving secure aggregation in vehicular communication

Qin B., Wu Q., Domingo-Ferrer J., Susilo W.

Control and Cybernetics

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2012

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Vol. 41, no. 2

277-296

EN

Vehicular ad hoc networks (VANETs), formed by computers embedded in vehicles and the traffic infrastructure, are expected to develop in the near future to improve traffic safety and efficiency. To this end, VANETs should be designed to be resistant against various abuses and attacks. In this paper, we first review the existing proposals to provide security, privacy, and data aggregation in vehicle-to-vehicle communication. We then address the fundamental issue of achieving these conflicting properties in a unified solution, having observed that separate efforts cannot fulfill the VANET design objectives. A set of new mechanisms are suggested for efficiently managing identities and securely compressing cryptographic witnesses, which are among the major obstacles to the deployment of strong security mechanisms in VANETs. Finally, we employ the standard threshold cryptographic technology to improve the basic protocol with robustness.