• International Journal of Internet, Broadcasting and Communication
• /
• 제12권2호
• /
• pp.77-82
• /
• 2020

IoT devices frequently require input resources to communicate with various sensors or IoT platforms. IoT device wastes a lot of time as idle time or waiting time to check the data of the input resource and use the input resource. In addition, IoT devices use various input resources. We compares and analyzes input idle time and input waiting time generated from hardware serial input resource, software serial input resource, digital port input resource, and analog port input resource using Arduino widely used as IoT device. In order to design the IoT device framework, it is necessary to understand the characteristics of input resources and to design them to minimize unnecessary input idle time and input waiting time. The analog input wait time has a much larger input wait time than the digital input wait time, so it must be designed to receive analog information periodically at the appropriate timing. The characteristics of the input resources analyzed in this way help to design an efficient IoT device.

• 디지털산업정보학회논문지
• /
• 제15권3호
• /
• pp.29-36
• /
• 2019

With the rapid development of 5G technology, more and more network functions are interconnected and more popular. In order to effectively manage emerging network concepts, it allows any device object in the real world to be connected anywhere and at any time through the integration of device object recognition, interaction and raw data collection technologies. In addition, IP Multimedia Subsystem (IMS) is an architecture framework for transmitting IP-based information to the device object which can be represented as end user. Therefore, the Internet of Things and IP Multimedia Subsystem (IoT-IMS) communication platform can provide a convenient and fast way for user or device objects to deploy new application services effectively. In particular, in order to collect and manage the device information from IoT effectively in the IoT-IMS communication platform, an IoT Information Gateway (IIG) is proposed. Through the IoT Application Service (AS) scenario, the collected device information can be easily observed and managed in a unified way.

• International journal of advanced smart convergence
• /
• 제8권3호
• /
• pp.87-94
• /
• 2019

IoT-based services are being released in accordance with the aging population and the demand for well-being pursuit needs. In addition to medical device companies, companies with ideas ranging from global ICT companies to startup companies are accelerating their market entry. The areas where these services are most commonly applied are health/medical, life/safety, city/energy, automotive and transportation. Furthermore, by expanding IoT technology convergence into the area of life care services, it contributes greatly to the development of service models in the public sector. It also provides an important opportunity for IoT-related companies to open up new markets. By addressing the problems of life care services that are still insufficient. We are providing opportunities to pursue the common interests of both users and workers and improve the quality of life. In order to establish IoT-based digital life care services, it is necessary to develop convergence technologies using cloud computing systems, big data analytics, medical information, and smart healthcare infrastructure.

• 디지털융복합연구
• /
• 제14권10호
• /
• pp.295-302
• /
• 2016

ICT 강국을 중심으로 국가자원에서 IoT기반의 기술을 지원하고 있으며, 기업 및 연구소에서도 기술 개발 및 생태계 조성을 위해서 활발히 연구되고 있다. 서울시의 도로 곳곳에서는 IoT기반의 공공시설이 도입되고 있으며, 사용자들로부터 다양한 서비스 및 편의성을 제공하고 있다. 하지만 IoT의 본격적인 도래와 발전을 위해서는 보안 및 프라이버시 침해와 생명과 안전에 대한 위협하는 사례가 빈번히 발생하고 있다. 또한 IoT 환경은 기존의 센서 네트워크, 이 기종 통신 네트워크, IoT 환경에서 최적화된 Device 등 다양한 환경기술을 포함하고 있으므로 기존의 보안 위협 및 다양한 공격 기법을 계승한다. 그러므로 본 논문에서는 IoT환경에서 안전한 통신을 위한 속성기반 암호화기술에 대해서 연구한다. 디바이스에서 수집된 데이터를 속성기반의 암호화 기법을 활용하여 전송하며, 키 생성 프로토콜을 설계하여 디바이스와 사용자에 대한 등급 및 권한을 식별하여 안전한 메시지를 전송하도록 한다. 성능평가를 수행하여 기존의 RSA 알고리즘 대비 암호화, 서명부분에서 대략 69%, 40%의 향상된 속도를 확인하였으며, IoT환경에서 발생하는 보안위협에 대해서 안전성을 분석하였다.

• 디지털산업정보학회논문지
• /
• 제16권1호
• /
• pp.1-10
• /
• 2020

This paper is a IoT-based radon meter control system and a radon meter control method using it. The IoT-based radon meter control system is control system for controlling a radon meter by network-connecting radon meter and a user terminal. The radon measuring device may be provided with a radon sensor to measure a radon value of a preset management target area, it collect and store numerical data. The radon meter control system monitors the condition of the radon meter, it includes control center configured to deliver radon meter management information generated to a user terminal. Also radon measurements to determine the exact amount of radon gas. Therefore, the situation-specific actions based on radon numbers can be promptly implemented to ensure adequate protection for those who are vulnerable to radon and those who live in the area. Condition monitoring allows the radon meter to respond quickly to failure or failure of the radon meter. In addition, it is possible to secure a baseline of radon's influence and to obtain research data to cope with radon by establishing big data with radon measurements.

• 디지털산업정보학회논문지
• /
• 제14권4호
• /
• pp.27-33
• /
• 2018

The recent efforts in academia and industry represent a paradigm shift that will extend the IoT from the home environment so that it is interoperable with the Internet of Vehicles (IoV). IoV is a special kind of IoT. It allows to connect between vehicle and things located in infrastructure. Furthermore, IoV enable to create new intelligent services through collaboration with existing various services such as smart city and connected home. In this paper, we develop a service in order to realize IoV. To this end, we design a novel vehicle service platform which could automatical controlling the IoT device according to drivers' voice. To show practical usability of our proposed platform, we develop a prototype service could be call car-to-thing (C2T). We expect that our proposed platform could eventually contribute to realizing IoV.

• 융합보안논문지
• /
• 제19권3호
• /
• pp.51-59
• /
• 2019

본 논문에서는 사물인터넷(IoT) 시대의 안전한 기업 내부 네트워크 환경을 유지시키기 위하여 네트워크 가시성을 확보할 수 있는 단말 식별 시스템을 제안한다. 최근 기업 네트워크의 영역은 점점 더 넓어지고 복잡해지고 있다. 더 이상 데스크톱과 스마트폰뿐만 아니라 업무용 패드, 바코드스캐너, AP, Video Surveillance, 디지털 도어, 방범장치, 기타 IoT 장비 등 빠르게 증가하고 있으며, 이에 따라 보안위협 역시 증가하고 있다. 따라서 본 논문에서는 IoT 시대의 폭발적으로 증가하고 있는 단말을 식별할 수 있는 프로세스 및 모듈별 기능을 포함하는 단말 식별 시스템을 제안한다. 제안하는 시스템은 기업의 보안 관리자에게 다양한 단말의 정보 및 취약점 등을 제공하여 사내 네트워크에서 발생할 수 있는 잠재적인 사이버 위협뿐만 아니라 비즈니스 위협에 대응할 수 있는 종합적인 위협 관리 기능을 제공할 수 있다.

• 디지털산업정보학회논문지
• /
• 제10권3호
• /
• pp.49-59
• /
• 2014

The Internet of Things(IoT) is a new promising technology made from a variety of technology. The IoT links the objects or people, then enabling anytime, anywhere connectivity for anything and not only for anyone. Social networking services have changed the way people communicate. Recently, new research challenges in many areas of Internet of things and social networking services are fired. In this paper, we propose things recommendation method using social relationship in social Internet of Things. We study previous researches about social network service, IoT, and social IoT. We proposed SIoT_FW(Social IoT Friendship Weight) using static and a dynamic social friendship weight. Also, our method considers four social relationships (Ownership Object Relationship, Co-Location Object Relationship, Social Object Relationship, Parental Object Relationship). We presents a music device scenario using our proposed method.

• 한국컴퓨터정보학회논문지
• /
• 제27권12호
• /
• pp.231-238
• /
• 2022

무선 통신의 발전과 IoT 센서의 발전으로 인해 휴대용 모바일 통신 장치와 센서 간의 근거리 무선 통신 기술들이 개발되어 다양한 응용서비스를 제공하는 고부가가치의 플랫폼으로 발전하고 있다. 본 논문에서는 비콘, 블루투스, UWB(Ultra-wideband), ZigBee, NFC(Near Field Communication), Z-Wave, 6LoWPAN(IPv6 over Low power WPAN), D2D(Device to Device) 등과 같은 근거리 무선 통신 기술 중에서, 실내 위치 측위를 제공할 수 있는 비콘을 기반으로 IoT 서비스 플랫폼을 제안하였다. 그리고 무분별한 비콘 스팸 신호를 차단하고 유연성과 확장성을 가진 REST 웹 서비스 기술을 적용하여 비콘 연동 웹서버를 설계하였다. 데이터 전송 성공률, 비콘 Push 차단 성공률, 위치 측위 정확도, IoT 연동 처리 성공률, REST 웹 서비스 기반 데이터 처리 성공률 등을 테스트하여 다른 기종 간의 데이터 접근성을 검증하였다. 설계된 IoT 서비스 플랫폼을 통해 향후 근거리 무선 통신 기반의 비즈니스 모델과 서비스 플랫폼에 대한 다양한 제안과 연구가 진행될 것이다.

• 디지털산업정보학회논문지
• /
• 제11권3호
• /
• pp.21-29
• /
• 2015

The Internet of Things (IoT) is an Infrastructure which allows to connect with each device in physical world through the Internet. Thus IoT enables to provide meahup services or intelligent services to human user using collected data from those devices. Due to these advantages, IoT is used in divers service domains such as traffic, distribution, healthcare, and smart city. However, current IoT provides restricted services because it only supports monitor and control devices according to collected data from the devices. To resolve this problem, we propose a design and implementation of personalized IoT service base on service orchestration. The proposed service allows to discover specific services and then to combine the services according to a user location. To this end, we develop a service ontology to interpret user information according to meanings and smartphone web app to use the IoT service by human user. We also develop a service platform to work with external IoT platform. Finally, to show feasibility, we evaluate the proposed system via study.