• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.117-119
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• 2022

M-IoT 기술 개발과정에서 최종 사용자 및 관련 전문가들의 지속적이고 협력적인 참여를 유도하기 위한 리빙랩 환경 조성을 목표로 한다. 이에 방법론으로써 '선내 IoT 센서 데이터 모니터링을 위한 인터넷 홈페이지 구축'을 제시하여 선내 통신 시스템(표면파 기술) 기술검증 환경 지원 및 M-IoT 기술 기반 홈페이지 구축 과정과 향후 운영방향을 제시하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.05a
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• pp.109-111
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• 2019

스마트 항만 IoT 인프라 및 정보수집 제공 장치 개발 과제는 항만 IoT 인프라와 정보수집 및 제공 장치 개발을 통해 항만물류자원들의 상호 간 초연결 네트워크를 구축하고, 이를 기반으로 실시간으로 정보를 수집 분석하여 제공함으로써 화물, 사람, 장비, 시설 등을 포함하는 항만 내 모든 자원의 연결성을 90% 이상 확보하고, 더불어 선박, 외부트럭, 교량, 교통 등을 포함한 항만 외 외부자원과의 연결성을 강화하는 것을 목적으로 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.11a
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• pp.137-139
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• 2023

선박에 사물인터넷 기술을 적용하여 선박의 현재 상태를 모니터링 할 수 있는 각종 M-IoT 기기(혠, 속도, 타각, 기울기 등)를 설치하고 중앙에서 관리할 수 있는 M-IoT S/W 플랫폼 적용 시 고려해야 하는 보안성 검증 기준을 개발하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2019.05a
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• pp.472-474
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• 2019

We propose an antenna for subminiature sensor node in the marine IoT service based on low power wide area (LPWA) network. The proposed antenna is designed for multi-band in ISM band. The specification of the proposed antenna expressed here is also for multi-band service.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2019.05a
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• pp.418-420
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• 2019

Sensor node and edge device for multi-sensing of marine IoT service is proposed. Especially, the proposed devices are based on the management and data process through the closed network (i.e., private network) as well as the commercial public network provided by major communication service providers.

• Journal of Advanced Navigation Technology
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• v.22 no.6
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• pp.545-550
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• 2018

Ministry of Oceans and Fisheries declared action plan for the electric fishing gear using real name in order to prevent overusing the fishing gear and to reduce discarded fishing gear. It is needed for a technique that can efficiently transmit the information including the type and location of the fishing gear and the user's real name to the fishing boat and the control center using IoT-based communication. The marine tracker buoy system, which is placed on the water for a long time, transmit the position data and the state data of the buoys to the control center in the ground by using NB-IoT channels. In this paper, we propose the algorithm for the low-power operation of the marine tracker buoy system is proposed and test results of current consumption in the marine tracker buoy system with the proposed algorithm is investigated.

• Journal of Advanced Navigation Technology
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• v.24 no.6
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• pp.613-619
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• 2020

Hybrid media access control (MAC) is used in internet of things (IoT) network, because of communication feature concern with data capacity and communication interval between gateway and sensor nodes and the cost efficiency. Hybrid MAC consists of TDMA and CSMA generally. The distance between gateway and sensor node is openly changed in marine IoT network. Therefore, it is needed to control the period of timeslot of hybrid MAC used in marine IoT network. In this paper, the design rule of TDMA timeslot with the variable period depending on communication distance was proposed. It was confirmed from the analysis that 72 times communication between gateway and sensor nodes is possible in LoRa network by using the proposed TDMA variable timeslot scheme.

• Journal of Advanced Navigation Technology
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• v.24 no.6
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• pp.593-600
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• 2020

The equipment for marine IoT service have to overcome the effect of seawater. Furthermore, the free floating transmitter in seawater will be less affected by the seawater environment. The results of the design and fabrication of antenna, which is embedded in buoy, are shown in this research. The proposed antenna is used to supervise the states of fishing gears in monitoring system for real-name system of electric fishing gear. The selected frequency band of the proposed antenna is 920 MHz, and PCB pattern type is selected for subminiature and light weight. It is confirmed that RF characteristics is more degraded, however, the radiation is gradually upward as the contact surface of buoy with seawater is more broaden through the simulation results. That is, the RF performance of the proposed antenna is more deteriorated but beam radiation characteristics is more suited the marine IoT, the seawater effect is more increased. It is expected that the proposed antenna will contribute the implementation of IoT network based on low power wide area (LPWA) when the degradation of RF performance will be settled.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.344-345
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• 2022

ogy is being used in many fields, such as smart farms, smart oceans, smart homes, and smart energy. Various IoT terminals are used for these IoT services. Here, IoT devices are physically installed in various places. A malicious attacker can access the IoT service using an unauthorized IoT device, access unauthorized important information, and then modify it. In this study, to solve these problems, we propose an authentication system for IoT devices used in IoT services. The IoT device authentication system proposed in this study consists of an authentication module mounted on the IoT device and an authentication module of the IoT server. If the IoT device authentication system proposed in this study is used, only authorized IoT devices can access the service and access of unauthorized IoT devices can be denied. Since this study proposes only the basic IoT device authentication mechanism, additional research on additional IoT device authentication functions according to the security strength is required.IoT technol

• Electronics and Telecommunications Trends
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• v.29 no.5
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• pp.18-29
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• 2014

최근 해양안전에 대한 국내외의 관심과 함께 통신기술의 발전, 선박에 다양한 디지털 및 전자장비들이 도입됨에 따라 선박을 위한 전자항법체계인 e-navigation이 주목을 받고 있다. E-navigation은 안전뿐 아니라, 해양에서의 디지털시대의 서막을 여는 IT 융합의 새로운 패러다임을 제공하고 있다. 본 논문에서는 e-navigation과 관련하여 국제해사기구(IMO), 국제항로표지협회(IALA: International Association of Lighthouse Authorities), 국제수로기구 (IHO: International Hydrographic Organization), 국제전기협회(IEC) 등의 관련 기술에 대한 국제표준화기구의 최근 동향에 대해서 살펴볼 것이다. 또한, 한국형 e-navigation에 대한 국내 동향과 함께 최근 각광을 받고 있는 사물인터넷(IoT: Internet of Things) 기술을 해양분야에 적용하기 위한 방안에 대해서도 다루고자 한다.