• Title, Summary, Keyword: VANET

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VANET 라우팅에 대한 연구 및 동향

  • Kim, Dae-Hui;An, Sun-Sin
    • Information and Communications Magazine
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    • v.30 no.5
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    • pp.95-105
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    • 2013
  • 차량이 급격히 증가하고, 무선 통신 기술이 발전함에 따라, 전 세계적으로 VANET 관련 연구가 활발히 진행되고 있다. VANET은 MANET의 한 형태로, 다양한 교통 관련 응용에 활용될 수 있다. 하지만, VANET의 높은 이동성으로 인해 VANET에서 신뢰성 있는 라우팅을 제공하는 것은 쉽지 않다. 따라서 효율적인 라우팅 프로토콜의 설계는 VANET 응용의 성능에 있어 가장 중요한 요소이다. 이에 본 고에서는 기존 VANET 라우팅 프로토콜에 대해 상세히 알아본 후, VANET 라우팅 프로토콜의 최신 동향과 이슈에 대해 살펴본다.

A Secure and Privacy-Aware Route Tracing and Revocation Mechanism in VANET-based Clouds (VANET 기반 클라우드 환경에서 안전과 프라이버시를 고려한 경로추적 및 철회 기법)

  • Hussain, Rasheed;Oh, Heekuck
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.24 no.5
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    • pp.795-807
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    • 2014
  • Vehicular Ad hoc Network (VANET) has gone through a rich amount of research and currently is making its way towards the deployment. However, surprisingly it evolved to rather more applications and services-rich breed referred to as VANET-based clouds due to the advancements in the automobile and communication technologies. Security and privacy have always been the challenges for the think tanks to deploy this technology on mass scale. It is even worse that some security issues are orthogonally related to each other such as privacy, revocation and route tracing. In this paper, we aim at a specific VANET-based clouds framework proposed by Hussain et al. namely VANET using Clouds (VuC) where VANET and cloud infrastructure cooperate with each other in order to provide VANET users (more precisely subscribers) with services. We specifically target the aforementioned conflicted privacy, route tracing, and revocation problem in VANET-based clouds environment. We propose a multiple pseudonymous approach for privacy reasons and leverage the beacons stored in the cloud infrastructure for both route tracing and revocation. In the proposed scheme, revocation authorities after colluding, can trace the path taken by the target node for a specified timespan and can also revoke the identity if needed. Our proposed scheme is secure, conditional privacy preserved, and is computationally less expensive than the previously proposed schemes.

A Survey on Qualitative Analysis of Directional VANET MAC Protocols

  • Kim, Bongjae;Cho, Kwangsu;Nam, Choonsung
    • International Journal of Contents
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    • v.10 no.2
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    • pp.9-17
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    • 2014
  • Since vehicles' trajectories are so complex and dense traffic changes in nature frequently, the VANET (Vehicles Ad-hoc Network), using Omni-directional Antenna, has many channel collisions (or overlapping) on Data Link phrases (MAC layers). It is not easy to keep a good seamless communication status for VANET because of its unpredictable network environment. Among VANET research, Directional Antenna have been proposed as one of the most common systematical solutions to reduce (or to mitigate) this miss-communication problems by narrowing communicational ranges and making use of its customized error-detection process. However, even though Directional Antennas help VANET keep good seamless communication, many VANET researchers have reported that Directional VANET still has miss-communicational problems - this has lead to problems like 'Directional Hidden Terminal Problem', 'Deafness', 'Un-accuracy Lobe Scopes' and 'High Deployment Cost' being reported in various papers. To establish well-organized design assessments for a good Directional VANET MAC protocol to overcome these problems, we rearranged and grouped current Directional VANET' qualitative criteria from several current survey papers using these categories- 'Directional Discovery', 'Directional Forwarding' and 'Directional Handover'. In addition, based on the results of the following analysis, we show the essential design concerns that need to be looked at in order to develop a well-designed Directional-VANET MAC protocol.

Efficient Cache Management Scheme with Maintaining Strong Data Consistency in a VANET (VANET에서 효율적이며 엄격한 데이터 일관성을 유지하는 캐쉬 관리 기법)

  • Moon, Sung-Hoon;Park, Kwang-Jin
    • Journal of the Korea Society of Computer and Information
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    • v.17 no.5
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    • pp.41-48
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    • 2012
  • A Vehicular Ad-hoc Network (VANET) is a vehicular specific type of a mobile ad-hoc network, to provide temporary communications among nearby vehicles. Mobile node of VANET consumes energy and resource with participating in the member of network. In a VANET, data replication and cooperative caching have been used as promising solutions to improve system performance. Existing cooperative caching scheme in a VANET mostly focuses on weak consistency is not always satisfactory. In this paper, we propose an efficient cache management scheme to maintain strong data consistency in a VANET. We make an adaptive scheduling scheme to broadcast Invalidation Report (IR) in order to reduce query delay and communication overhead to maintain strong data consistency. The simulation result shows that our proposed method has a strength in terms of query delay and communication overhead.

User Authentication Method on VANET Environment (VANET 환경에서의 사용자 인증 기법)

  • Seo, Hwa-Jeong;Kim, Ho-Won
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.37 no.7C
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    • pp.576-583
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    • 2012
  • Security over VANET among vehicles and between vehicles and infrastructures has been studied. Through the research, ensuring the message authentication and confidentiality was possible. However, authentication on drivers and vehicles were not actively covered. Once, malicious user using illegal vehicle joins VANET and then generates mistaken information, other drivers' safety will be driven to crisis. For this reason, in the paper, we present a novel authentication method between drivers and vehicles and then only right vehicles and users can participate in VANET. As a result of this, drivers can enjoy their safe and comfortable trip.

VANET에서의 보안 위협 및 대처 방안

  • Na, Jin-Han;Park, Young-Ho;Moon, Sang-Jae
    • Proceedings of the Korea Society for Industrial Systems Conference
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    • pp.13-19
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    • 2009
  • VANET 환경에서는 차량간 잘못된 정보의 전송이 교통 혼잡 뿐 아니라 치명적인 사고를 일으킬 수 있으므로 VANET 환경에서의 응용들이 안전하고 신뢰성 있게 제공하기 위해서는 보안성 확보가 필수적으로 요구된다. 본 논문에서는 VANET에서 안전성을 제공하기 위하여 VANET에서의 보안 위협 및 공격 유형을 분석하고 대처방안을 제시하며 제공되는 대표적인 인증 프로토콜 방식을 분석한다.

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Reaching Byzantine Agreement underlying VANET

  • Wang, Shu-Ching;Lin, Ya-Jung;Yan, Kuo-Qin
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.13 no.7
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    • pp.3351-3368
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    • 2019
  • The Internet of Things (IoT) enables machines and devices in a global network to connect and provide applications. The Vehicular Ad-hoc NETwork (VANET) allows vehicles in the network to communicate with each other as an application of the IoT. The safety and comfort of passengers can be improved through VANET related applications. In order to be able to provide related applications, there must be a reliable VANET topology. As a result of the Byzantine agreement (BA), fault tolerance can be solved in VANET. In order to improve the reliability of the system, even if some components in the system are damaged, a protocol is needed to assist the system to perform normally. Therefore, the BA problem in VANET with multiple impairments is revisited in this research. The proposed protocol allows all normal processing elements (PEs) to reach agreement using the least amount of information exchange. Moreover, the proposed protocol can tolerate the largest number of damaged PEs in VANET.

Vehicle Registration Protocol for Secure Communication in VANET Environment (VANET 환경에서 안전한 통신을 위한 차량 등록 프로토콜)

  • Park, Young-Ho
    • Journal of the Korea Industrial Information Systems Research
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    • v.15 no.4
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    • pp.1-5
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    • 2010
  • To operate safely VANET applications, authenticaton is necessary to identify val d participants and prevent malicious parties from modifying messages. This paper proposes an efficient authentication protocol for the vehicle registration in VANET environment. The topology of VANET changes rapidly due to high-speed movement of vehicles, thus it is need to reduce the computational burden of the authentication protocol. Therefore, this protocol uses only one-way hash functions and EOR operations to register vehicles.

Survey of Cognitive Radio VANET

  • He, Xinxin;Shi, Weisen;Luo, Tao
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.8 no.11
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    • pp.3837-3859
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    • 2014
  • Vehicular Ad hoc Networks (VANET) becomes more popular in industry, academia and government. However, Typical VANET is challenged by high speed mobility and insufficient spectrum resources over congested scenarios. To address those serious problems, some articles have introduced Cognitive Radio (CR) technology into VANET and formed CR-VANET. In this article, we propose an overview of CR-VANET by exploring different architectures and features. Moreover, we provide taxonomy of state-of-the-art papers in this emerging field and the key articles are well analyzed respectively. In addition, we illustrate both research and application frameworks of CR-VANET based on our works, and propose some open research issues for inspiring future work.

Implementation of QoS Provisioning Model in VANET (VANET에서 QoS Provisioning모델의 구현)

  • Huh, Jee-Wan;Song, Wang-Cheol
    • Proceedings of the Korea Contents Association Conference
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    • pp.884-888
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    • 2009
  • Vehicular Adhoc Networks (VANET), a Vehicle-to-Infrastucture or Vehicle-to-Vehicle communication technology, is an area that makes more specific use of Mobile Adhoc Networks(MANET). VANET's Quality of Service(QoS) focuses on preventing possible emergencies like car crash from happening by immediately transmitting information to the cars around, while MANET's QoS is being studied for the quality of multimedia data such as Video on Demand(VoD), Video streaming, Voice over IP(VoIP), etc. In this paper, I structure the actual network configuration using Link State Routing(LSR), implement QoS Provisioning Model using Common Open Policy Service(COPS), and suggest more effective k-hop Cluster and inter-domain policy negotiation which fit better to the characteristics of VANET.

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