• The Journal of the Korea institute of electronic communication sciences
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• v.18 no.3
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• pp.427-432
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• 2023

In this study, MEC (: Multi-access Edge Computing) proposes a cloud service network configuration for various tests of autonomous vehicles to which V2X (: Vehicle to Everything) is applied in Wave, LTE, and 5G networks and MEC App (: Application) applied V2X service function test verification of two domains (operator (KT, SKT, LG U+), network type (Wave, LTE (including 3G), 5G)) in a specific region. In 4G networks of domestic operators (SKT, KT, LG U+ and Wave), MEC summarized the improvement effects through V2X function blocks and traffic offloading for the purpose of bringing independent network functions. And with a high level of QoS value in the V2X VNF of the 5G network, the traffic steering function scenario was demonstrated on the destination-specific traffic path.

• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.4
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• pp.617-624
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• 2022

The small electric vehicles equipped with V2X(vehicle to everything) systems may provide more information and function to the existing navigation system of the vehicle. The key components of V2X technology include V2V (vehicle to vehicle), V2N(vehicle to network) and V2I (vehicle to infrastructure). This study is to design and implementation of VI type E-PTO which is interfaced with external equipments, the work designs the components of E-PTO such as DC/DC converter, DC/AC converter, battery bidirectional charging system etc. Also, it implements the devices and control systems for driving. The test results of VI type E-PTO components showed allowable 10% requirements of transient voltage variation rate and recovery time within 100ms for start/stop and normal operation.

• Annual Conference of KIPS
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• 2022.05a
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• pp.90-93
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• 2022

좁은 ITS(Intelligent Transportation Systems) 대역에서는 채널 혼잡을 피하는 것이 필수적이다. 눈에 띄는 변화가 있을 때만 차량 운동을 보고하는 것은 대역폭 사용을 줄이기 위한 표준화된 접근 방식이다. 그러나 셀룰러 V2X(Vehicle-to-Everything) 통신에서 주기적인 비콘의 빈번한 누락으로 인한 비주기성은 자원 낭비와 자원 스케쥴링의 안정성 문제를 제기한다. 이에 대해 이 논문에서는 자동차의 운동이 물리적 특성에 의해 제약을 받기 때문에 딥러닝 기반 체계로 대부분의 메시지 생성 시간을 정확하게 예측할 수 있다는 것을 보여준다. 제안된 예측 방법은 통상적인 도로주행 시 94.9%의 정확도를 달성한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.615-616
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• 2023

본 논문은 자율주행 자동차의 보안 취약성과 이를 해결하기 위한 솔루션에 대한 조사를 다루고 있다. 자동차의 자율주행 및 초연결성이 대두됨에 따라 보안 위협이 점점 중요해지는 현실을 직면하고 있다. 본 논문은 다양한 취약성을 카테고리 별로 다루고, 해당 취약성에 대응하기 위한 보안 솔루션과 현재 연구 개발 중인 솔루션들을 소개하고 있다. 그러나 아직 해결되지 않은 과제들이 산적해 있으며, 연구와 개발이 계속되어야 안전하고 신뢰성 있는 초연결 자율주행 자동차를 구현할 수 있을 것으로 기대한다.

• Annual Conference of KIPS
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• 2023.11a
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• pp.170-172
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• 2023

최근 자동차는 자율주행차 혹은 스마트카로 진화하며 다양한 외부 통신 인터페이스를 포함하고 있습니다. 각 기능 통제를 위해 차량 소프트웨어의 복잡성과 자동차 기술 발전에 따라 통신 인터페이스의 증가로 인하여 자동차에 대한 사이버 공격 가능성 및 위험성이 꾸준히 증가하고 있습니다. 특히, 커넥티드카의 안전을 위한 V2X(Vehicle to Everything)통신이 보안 취약점을 가질 경우, 이는 탑승자의 생명에 직접적인 위협을 초래할 수 있습니다. 그러나, 지능형 교통 시스템에서는 익명성을 위해 일정 시간이 지나면 차량의 식별정보를 변경해 공격자를 찾는데 어려움이 있다. 따라서 본 논문에서는 지능형 교통 시스템 내에서 이상행위를 유발하는 차량을 탐지하기 위해 V2X에 활용되는 표준 메시지 정보를 통해 식별하여 추적하는 기술을 제안하고자 한다.

• Annual Conference of KIPS
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• 2024.05a
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• pp.314-316
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• 2024

과거 자동차 내부 네트워크는 폐쇄적이었으나, 오늘날 블루투스,WiFi, 셀룰러 등 다양한 인터페이스를 통해 외부와 연결되며 안전과 편의성을 제공하기 위해 커넥티드카 혹은 스마트카로 변화하고 있다. 그러나, 외부와의 연결성이 제공됨으로써 기존에 존재하지 않았던 보안 위협이 꾸준히 증가하고 있다. 특히 커넥티드카는 V2X(Vehicle to Everything) 통신을 통해, 다양한 보안 취약점이 발생할 수 있게 되었다. 따라서 본 논문에서는 커넥티드카에서 발생할 수 있는 보안 위협 시나리오들에 대해 제안하고자 한다.

• Journal of Auto-vehicle Safety Association
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• v.15 no.3
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• pp.34-42
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• 2023

Simulation-based virtual testing is known to be a major requirement for verifying the safety of autonomous driving functions. However, in the simulation environment, there is a difficulty in that all driving environments related to the autonomous driving system must be realistically modeled. In particular, C-ITS (Cooperative-Intelligent Transport Systems) is essential for urban autonomous driving of Lv.4, but the approach to modeling for C-ITS service in the MILS (Model in the Loop Simulation) environment is not yet clear. Therefore, this paper aims to deal with V2X (Vehicle to Everything) modeling methods to effectively apply C-ITS-based autonomous cooperative driving services in the MILS environment. First, major C-ITS services and use cases for autonomous cooperative driving are analyzed, and a modeling method of V2X signals for C-ITS service simulation is proposed. Based on the modeled V2X messages, the validity of the proposed approach is reviewed through simulations on the C-ITS service use case.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.10a
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• pp.325-328
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• 2018

With the rapid development of autonomous driving technology, commercialization of freight cars and buses as well as passenger cars has come to the near future. As researches for commercialization of autonomous navigation are being actively carried out in various countries around the world, in accordance with the development of technology, this paper proposes a bus adopting a new concept of community driving technology based on C-V2X for more effective autonomous driving of buses do. In order to realize the cluster bus, we propose a more effective cluster bus using C-V2X, which is the core communication of the cluster driving, which is complementary to the existing V2X for inter-vehicle communication and vehicle-to-infrastructure communication.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.3
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• pp.590-598
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• 2016

It comes into the spotlight as the new Blue Ocean in which the connected car industry in which the car and mobile communication technology is convergence. All sorts of infortainments services connecting with the portable electronic device(Smart phone, tablet PC, and MP3 player) and car are rapidly grown. The Connected car emphasizes the vehicle connectivity with the concept that the car has communication with the around on a real time basis and it provides the safety and expedience to the operator and using the thing of Internet (IoT) in the car and supports the application, presently, the entertainment service including the real-time Navigation, parking assistant function, not only the remote vehicle control and management service but also Email, multimedia streaming service, SNS and with the platform. Intelligent vehicle network is studied as the kind according to MANET(Mobile Ad Hoc Network) for the safety operation of the cars of the road and improving the efficiency of the driving.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.15 no.1
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• pp.95-101
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• 2016

Vehicular communications is system which can be applied for transmission of various safety messages or Intelligent Transportation Systems(ITS) applications by combining vehicle/road technology with Information and Communication Technology(ICT). In recent years, a variety of ITS services are available such as driving information, road conditions, V2X messages as well as navigation and traffic jams notification. In general, vehicular communications can be used for vehicle-to-vehicle and vehicle-to-infrastructure communication by adopting IEEE802.11p/1609 standard which is commonly known as wireless access in vehicular environments. In this paper, WAVE communication standard based on the IEEE802.11p is explained and signal characteristics in WAVE communication is introduced. Also, The H/W and S/W characteristics in Road Side Station and On Board Equipment for the Vehicle to Everything communication are analyzed. Received Signal Strength which is power of receiving signal of communication equipment is measured in test road to estimate the real WAVE communication's performance. It is shown that the implemented WAVE communication technology is satisfactory to provide ITS services.