scholarly journals An Atomic Cross-Chain Swap-Based Management System in Vehicular Ad Hoc Networks

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Chenkai Tan ◽  
Shaoyi Bei ◽  
Zhengjun Jing ◽  
Neal Xiong
Keyword(s):  
Ad Hoc Networks ◽  
Management System ◽  
Large Scale ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Keyword Search ◽  
User Privacy ◽  
Network Bandwidth ◽  
Road Side Unit ◽  
Hoc Networks

The blockchain-based management system has been regarded as a novel way to improve the efficiency and safety of Vehicular Ad Hoc Networks (VANETs). A blockchain-based scheme’s performance depends on blockchain nodes’ computing power composed from the road-side unit (RSU). However, the throughput of blockchain-based application in VANETs is limited by the network bandwidth. A single blockchain cannot record large-scale VANETs’ data. In this paper, we design an atomic cross-chain swap-based management system (ACSMS) to boost the scalability of blockchain-based application in VANETs. The blockchain-based public-key encryption with keyword search is further introduced to protect user privacy. The analysis shows that ACSMS achieves cross-chain swap without loss of CAV security privacy. The simulation results show that our method can realize multiple blockchain-based applications in VANETs.

scholarly journals ClusterRep: A cluster-based reputation framework for balancing privacy and trust in vehicular participatory sensing

2018 ◽  
Vol 14 (9) ◽  
pp. 155014771880329 ◽  
Author(s):  
Jin Wang ◽  
Youyuan Wang ◽  
Xiang Gu ◽  
Liang Chen ◽  
Jie Wan
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Cluster Head ◽  
Quality Data ◽  
Participatory Sensing ◽  
Sensitive Information ◽  
User Privacy ◽  
Building Trust ◽  
Hoc Networks

In vehicular participatory sensing, vehicles may provide false data or low-quality data. Building trust in vehicular ad hoc networks is an efficient way to deal with this issue. On one hand, vehicles need to disclose necessary information to demonstrate their trustworthiness. On the other hand, vehicles tend to hide their sensitive information to preserve user privacy. Therefore, privacy and trust are conflict in vehicular ad hoc networks. A cluster-based reputation framework named ClusterRep is proposed to balance privacy and trust in vehicular ad hoc networks. In this framework, the cluster head collaborates with cluster members to change pseudonyms and reputation values. The experiments show the scalability and the effectiveness of the ClusterRep compared with Beta strategy and IncogniSense-floor strategy.

scholarly journals Inter-Vehicular Communications Using Wireless Ad Hoc Networks

2010 ◽  
pp. 120-138 ◽  
Author(s):  
Raúl Aquino-Santos ◽  
Víctor Rangel-Licea ◽  
Miguel A. García-Ruiz ◽  
Apolinar González-Potes ◽  
Omar Álvarez-Cardenas ◽  
...  
Keyword(s):  
Ad Hoc Networks ◽  
Large Scale ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Routing Algorithm ◽  
Delivery Ratio ◽  
Test Bed ◽  
Limited Bandwidth ◽  
Hoc Networks ◽  
Large Scale Networks

This chapter proposes a new routing algorithm that allows communication in vehicular ad hoc networks. In vehicular ad hoc networks, the transmitter node cannot determine the immediate future position of the receiving node beforehand. Furthermore, rapid topological changes and limited bandwidth compound the difficulties nodes experience when attempting to exchange position information. The authors first validate their algorithm in a small-scale network with test bed results. Then, for large-scale networks, they compare their protocol with the models of two prominent reactive routing algorithms: Ad-Hoc On-Demand Distance Vector and Dynamic Source Routing on a multi-lane circular dual motorway, representative of motorway driving. Then the authors compare their algorithm with motorway vehicular mobility, a location-based routing algorithm, on a multi-lane circular motorway. This chapter then provides motorway vehicular mobility results of a microscopic traffic model developed in OPNET, which the authors use to evaluate the performance of each protocol in terms of: Route Discovery Time, End to End Delay, Routing Overhead, Overhead, Routing Load, and Delivery Ratio.

Clustering, Connectivity, and Monitoring Challenges in Vehicular Ad hoc Networks

2010 ◽  
pp. 257-281
Author(s):  
Ameneh Daeinabi ◽  
Akbar Ghaffarpour Rahbar
Keyword(s):  
Ad Hoc Networks ◽  
Intelligent Transportation Systems ◽  
Large Scale ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Clustering Algorithms ◽  
Transportation Systems ◽  
High Rate ◽  
Efficient Resource ◽  
Hoc Networks

Vehicular Ad Hoc Networks (VANETs) are appropriate networks that can be applied for intelligent transportation systems. Three important challenges in VANETs are studied in this chapter. The first challenge is to defend against attackers. Because of the lack of a coordination unit in a VANET, vehicles should cooperate together and monitor each other in order to enhance security performance of the VANET. As the second challenge in VANETs, scalability is a critical issue for a network designer. Clustering is one solution for the scalability problem and is vital for efficient resource consumption and load balancing in large scale VANETs. On the other hand, due to the high-rate topology changes and high variability in vehicles density, transmission range of a vehicle is an important issue for forwarding and receiving messages. In this chapter, we study the clustering algorithms, the solutions appropriate to increase connectivity, and the algorithms that can detect attackers in a VANET.

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