• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.11 no.6
• /
• pp.1-14
• /
• 2012

Traffic management centers (TMC) collect real-time traffic data from the field and have powerful databases for analysing, recording, and archiving the data. Recent advanced sensor and communication technologies have been widely applied to intelligent transportation systems (ITS). Regarding sensors, various in-vehicle sensors, in addition to global positioning system (GPS) receiver, are capable of providing high resolution data representing vehicle maneuverings. Regarding communication technologies, advanced wireless communication technologies including vehicle-to-vehicle (V2V) and vehicle-to-vehicle infrastructure (V2I), which are generally referred to as V2X, have been widely used for traffic information and operations (references). The V2X environment considers the transportation system as a network in which each element, such as the vehicles, infrastructure, and drivers, communicates and reacts systematically to acquire information without any time and/or place restrictions. This study is motivated by needs of exploiting aforementioned cutting-edge technologies for developing smarter transportation services. The proposed system has been implemented in the field and discussed in this study. The proposed system is expected to be used effectively to support the development of various traffic information control strategies for the purpose of enhancing traffic safety on highways.

• Journal of Korea Society of Industrial Information Systems
• /
• v.17 no.7
• /
• pp.51-57
• /
• 2012

This paper proposes a group key design based on ECDH(Elliptic Curve Diffie Hellman) which guarantees secure V2V and V2I communication. The group key based on ECDH generates the VGK(Vehicular Group key) which is a group key between vehicles, the GGK(Global Group Key) which is a group key between vehicle groups, and the VRGK(Vehicular and RSU Group key) which is a group key between vehicle and RSUs with ECDH algorithm without an AAA server being used. As the VRGK encrypted with RGK(RSU Group Key) is transferred from the current RSU to the next RSU through a secure channel, a perfect forward secret security is provided. In addition, a Sybil attack is detected by checking whether the vehicular that transferred a message is a member of the group with a group key. And the transmission time of messages and the overhead of a server can be reduced because an unnecessary network traffic doesn't happen by means of the secure communication between groups.

• ICROS
• /
• v.2 no.2
• /
• pp.66-70
• /
• 1996

현재 차량 항법 장치는 최근 급속하게 발달한 전자기술을 활용하여 단순한 차량의 자유이동 기능에서 운전자에게 안전성, 효율성, 편의성, 가격 등을 보장할 뿐만 아니라 운전자에게 경로를 안내하거나 교통 정보를 제공하는 정보 제공 장치로 도약하고 있다. 그러나 앞으로 이같은 단순 정보 전달 기능을 초월하여 보다 효율적이고 안전한 운행이 가능한 지능적인 기능을 수행케 될 것이다. 즉, 도로상의 센서와 같은 교통 정보 수집체계와 통신체계 등을 활용하여 실시간 교통 상황 정보를 제공하여 쾌적한 추행환경 및 차량 제어 시스템과 연계하여 안전주행에 기여할 수 있다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2014.04a
• /
• pp.170-172
• /
• 2014

트래픽 텔레매틱스 어플리케이션으로 알려진 차량 무선통신 서비스는 현재 교통에 대해서 차량 주행환경에 대해 더욱 안전하고 효율적으로 연구되고 발전하고 있는 추세이다. 차량 통신에서는 WAVE (Wireless Access in Vehicular Environments) 표준을 채택함으로써 차량 간 통신 과 차량과 기지국 간 통신에 WAVE 표준을 지킨다. 차량 통신에서는 다양한 주행환경에 따라 전파에 따른 경로 손실 모델이 적용될 수 있다. 본 논문에서는 파라미터에 따른 주행환경을 구분하고 구분된 주행환경에 따라 적합한 경로 손실 모델에 대해서 연구한다.

• Information and Communications Magazine
• /
• v.29 no.9
• /
• pp.30-37
• /
• 2012

과거 단순한 이동수단이었던 자동차는 다양한 안전과 편의적 서비스를 제공하게 되면서 다양한 활동이 수행되는 생활의 한 공간으로 자리매김하고 있다. 이에 따라 차량을 선택하는데 있어 소비자 취향에 맞는 다양한 부가 서비스를 제공하는지가 중요한 요소로 작용함에 따라 자동차 산업에 IT 기술의 접목에 대한 필요성이 대두되었다. 이러한 흐름에 따라 자동차 IT 융합이 가속화되고 있으며, 편의성, 안전성, 편리성을 위해서 차량 내에 많은 ECU의 사용이 필수적으로 요구되고 있다. 이러한 자동차의 부품에 소프트웨어가 탑재됨에 따라 공통적으로 사용되는 모듈에 대하여 재사용성, 부품 호환성 등의 요구가 생겨나게 되었고, 이를 해결하고자 하는 움직임이 차량 SW 플랫폼 표준화를 통해서 활발하게 이루어지고 있다. 본 고에서는 자동차 서비스 개발을 위한 대표적인 차량 전장용 SW 플랫폼인 AUTOSAR 플랫폼과 차량 내 헤드유닛을 통해 멀티미디어 및 텔레매틱스 서비스를 제공하는 차량용 인포테인먼트 시스템을 위한 표준 플랫폼인 GENIVI 플랫폼에 대하여 살펴보고자 한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.12 no.3
• /
• pp.187-194
• /
• 2012

Vehicular communication networking is one of the most important building blocks of Intelligent Transportation System(ITS). The vehicular communication network is a wireless communication system enabling vehicles to communicate with each other as well as with roadside base stations. Especially, Wi-Fi based vehicle-to-infrastructure(V2I) communication is an emerging solution to improve the safety, traffic efficiency, and comfort of passengers. In this paper, we proposed a new communication hub platform for vehicles, and explained vehicle communication technology in short. Through car simulation results, we show thar our proposed system reduces signaling interference.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.12
• /
• pp.7292-7301
• /
• 2014

With the development of IT Info-Communications technology, the vehicle with a combination of wireless-communication technology has resulted in significant research into the convergence of the component of existing traffic with information, electronics and communication technology. Intelligent Vehicle Communication is a Machine-to-Machine (M2M) concept of the Vehicle-to-Vehicle. The Vehicle-to-Infrastructure communication consists of safety and the ease of transportation. Security technologies must precede the effective Intelligent Vehicle Communication Structure, unlike the existing internet environment, where high-speed vehicle communication is with the security threats of a wireless communication environment and can receive unusual vehicle messages. In this paper, the Vehicle Identification number between the V2I and the secure message communication protocol was proposed using hash functions and a time stamp, and the validity of the vehicle was assessed. The proposed system was the performance evaluation section compared to the conventional technique at a rate VPKI aspect showed an approximate 44% reduction. The safety, including authentication, confidentiality, and privacy threats, were analyzed.

• Journal of Korea Society of Industrial Information Systems
• /
• v.15 no.2
• /
• pp.23-30
• /
• 2010

This paper presents implementation details of car communications system based on V2I2V model over broadband wireless networks including WCDMA, HSDPA and WiBro. Also, we measures the major performance metrics such as Round Trip Time, end-to-end latency and others between in-vehicle client and location management system by driving across urban areas in Daegu city. Analysis of experimental results would be helpful to consider the applicability of traffic safety services using V2I2V-based car communications over various broadband wireless networks.

• The Safety technology
• /
• no.192
• /
• pp.19-21
• /
• 2013

최근 스마트폰 태블릿PC 등 모바일 기기에 활용된 정보통신기술이 차량용 인포메이션 시스템 개발에도 넓게 활용되고 있다. 음성인식 기술을 이용해 차량을 조작하는 일은 그 대표적인 예라 할 수 있다. 지엔에스티(주)는 이러한 차량용 음성인식 마이크 모듈을 제조 판매하는 전문기업이다. 2009년 설립된 신생기업이지만, 앞선 생산설비의 구축과 끊임없는 연구개발을 통해 국내 차량용 음성인식 마이크 모듈 시장을 장악했다. 실제로 이곳 제품들은 국내 최고 자동차 기업인 현대 기아자동차에 보급되면서 기술력을 인정받고 있다. 이처럼 지엔에스티(주)가 짧은 역사에도 불구하고 최고의 제품을 만들며 독보적인 위상을 구축할 수 있었던 비결은 무엇일까. 이 같은 물음에 이곳의 모든 관계자들은 사업장 내 안전이 먼저 확보됐었기에 가능한 일이었다고 입을 모아 말한다. 2009년 설립된 이후 단 한건의 안전사고가 발생하지 않았을 만큼 철저한 안전관리가 전개되고 있다. 근로자의 안전과 건강을 생각하며 사람 중심의 안전관리를 실천하고 있는 지엔에스티(주)를 찾아가봤다.

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.11 no.6
• /
• pp.103-110
• /
• 2012

In Vehicle Safety Communication (VSC), noted as a representative application of VANET technologies, emergency warning messages (EWM) are broadcast over vehicles in response to an emergency situation. However, as the number of vehicles increases, the so-called Broadcast Storm Problem often occurs due to a huge number of redundant EWM transmitted. Though many approaches in the literature have been proposed to solve the problem, most of them require the preliminary phase for setting up or refreshing neighbor relationship through exchanging beacon messages with nearby vehicles, thereby further increasing the traffic load. In this paper, we propose Longest Leaping Relay (LLR) scheme which can efficiently solve the Broadcast Storm Problem without any preliminary phase for setting up neighbor relationship. Through computer simulations, we compared the performance of the proposed scheme with competitive schemes and verified the proposed scheme outperforms the existing schemes.