• Title/Summary/Keyword: information communication infrastructure

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Proposal Scheme of a D2D Communication in Smart Shipyard (스마트 조선소내 D2D 통신 기술 적용 방안 제안)

  • Kim, Su-Hyun;Lee, Seong Ro;Min, Sang-Won
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.39C no.12
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    • pp.1261-1266
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    • 2014
  • Smart shipyard, all of the business of shipyard by using a mobile application, and the rapid spread of smart equipment, the overload of infrastructure due to a variety of mobile services is expected. Because macrocell and femtecell to reduce the overloading of existing infrastructure, additional core network devices have a problem, in this paper, the efficiency of resources than the communication over the existing infrastructure smart shipyard network to improve, to apply the D2D communication technology that can reduce the load on the infrastructure. The proposed routing path plan in accordance with the transfer method and the traffic type of network configuration and D2D equipment navigation and data for applying a smart shipyard. Whether to execute the function to overload traffic in the core network can send to the optimized path was confirmed by using the state transition diagram. Smart shipyard, by applying D2D communication allow efficient traffic handling than conventional communication method.

A Service Framework and Communication Method for Exchanging Information between Electric Vehicles and EV Charging Infrastructure (전기자동차와 충전인프라 간의 정보교환을 위한 서비스 프레임워크 및 통신 방법에 관한 연구)

  • Ryu, Min-Woo;Yoon, Jae-Seok;Lee, Sang-Sean;Won, Kwang-Ho;Cho, Kuk-Hyun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.6
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    • pp.2823-2829
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    • 2011
  • All of the government, private enterprises, and local governments are promoting the spread of electric vehicles to reduce carbon emissions depending on the green growth policy of the government that began in 2009. Due to this background, the prevalence of electric cars is being spread. However, the efficient management and operation through the exchanging information between electric vehicles and charging infrastructure, as well as the development of electric vehicles are essential to disseminate them. In this paper, we present a service framework for exchange of information between electric vehicles and charging infrastructure, and propose a communication method to meet it. To do this, we propose the most appropriate communication method through the performance evaluation by identifying and comparing the existing wireless communication methods can be applied to exchange information between electronic vehicles and EV charging infrastructure.

Study on Vehicle Infra System of Bimodal Tram (바이모달트램 차량인프라시스템에 관한 연구)

  • Lee, Kang-Won;Yoon, Hee-Taek;Park, Young-Kon;Hwang, Eui-Kyeong
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.2147-2152
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    • 2011
  • This study of bimodal integration management system in conjunction with the tram and the tram cars bimodal integrated management system that occupies a part of the system to perform its role as a bimodal tram vehicle configuration, a device for the vehicle's infrastructure ryureul development and it is aimed to build on the vehicle. Bimodal tram vehicle infrastructure systems, internal and external information of the larger vehicles, and vehicles used to collect information for its own part and the integrated operations management center, or providing partial information from the station and collect/provide for the transfer of information to the communication part consists In this study, the core of these devices, the configuration of the vehicle infrastructure systems for the overall management and control of vehicles operating a computer's central processing device, vehicle infrastructure systems that make it manages and stores all jangchiryu Integrated Operations Management Center is reporting. In addition, seamless integration with operational management center for interactive communication in a vehicle mounted communications devices to maintain the best condition to manage. Current general traffic management system in a similar terminal device being used, but bimodal tram vehicles operating the computer of the vehicle operates the infrastructure to configure the devices around the one to configure the system in terms of step enhanced the active type, the operating terminal unit of inter active type. In this study, considering the future alignment of the accounting fee system, the expansion of the system reliability and stability around the activities that are underway.

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DTN Routing for Improving Transmission Efficiency in a Destroyed Environment of Communication Infrastructure (통신 인프라가 파괴된 환경에서 전송 효율 향상을 위한 DTN 라우팅)

  • Jang, Sung-Jin;Lee, Won-Hui
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.20 no.3
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    • pp.37-41
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    • 2020
  • In this paper, we propose a routing method to improve the message transmission efficiency between DTN nodes in an environment where communication infrastructure in the city is destroyed. In the situation where a certain size of communication infrastructure can not function, the message transmission process between the nodes is explained. An effective routing method for improving reliability between nodes was proposed and evaluated using DTN simulator. The routing algorithm with improved reliability in urban areas was confirmed by simulation considering the message transmission relationship between nodes on uncertain path due to the destruction of communication infrastructure. We used a routing algorithm that includes all the contact information the node has experienced in the past. In the simulation of delivering messages in a situation where the communication infrastructure was destroyed, relatively better results were obtained than the existing routing algorithm.

A STUDY OF DISTRIBUTED DENIAL OF SERVICE ATTACK ON GOVERNMENT INFRASTRUCTURE

  • Kim, Suk-Jin;Jeong, Gisung
    • International Journal of Internet, Broadcasting and Communication
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    • v.8 no.2
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    • pp.55-65
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    • 2016
  • Distributed Denial of service attack is one of the major threats nowadays especially to the government infrastructure that give huge impact to the reputation and interrupt the services and resource. Our survey start with brief introduction about DDoS attacks, we illustrate the trends and incident happened at government from various countries. We then provide an extensive literature review on the existing research about implication, types of attacks and initiative to defence against the DDoS attacks. Our discussion aims to identify the trends in DDoS attacks, in depth impact of DDoS attacks to government infrastructure, classification of attacks and techniques against the attacks. And we will use for a fire fight safety and management.

Development of a Network Simulator for a Power Infrastructure Defense System Using IEEE PC37.118 (IEEE PC37.118을 이용한 광역 방어 시스템의 네트워크 시뮬레이터 개발)

  • Kim, Kyung-Nam;Yi, Keon-Young
    • Proceedings of the KIEE Conference
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    • 2006.07a
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    • pp.173-174
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    • 2006
  • The power infrastructure defense system monitor and control a power system with parameters of a power system such as voltage, phasor angle, frequency and power flow which are measured at the same instance. For this, synchronized phasor measurement based on the GPS(Global Positioning System) is necessary. PMU(Phasor Measurement Unit) measures synchrophasor and transmits it to the power infrastructure defense system. For this communication, IEEE H37.118 defines a communication message format and measurement concept and we extend the protocol to transmit disturbance data. The synchrophasor data can be sent at various rates and there are several options for phasor information sent in the synchrophasor message. In this paper, we develop software that simulate communication between the power infrastructure defense system and PMU to annalize the traffic.

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The Cost Analysis of Network by The Function of Automatic Link Recovery (자동링크복구 기능에 따른 네트워크 비용분석)

  • Song, Myeong-Kyu
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.8 no.6
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    • pp.439-444
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    • 2015
  • The Social infrastructure systems such as communication, transportation, power and water supply systems are now facing various types of threats including component failures, security attacks and natural disasters, etc. Whenever such undesirable events occur, it is crucial to recover the system as quickly as possible because the downtime of social infrastructure causes catastrophic consequences in the society. Especially when there is a network link-failure, we need an automatic link-recovery method. This means that customers are aware of network failures that can be recovered before you say that service. In this paper, we analysis the relation between Auto-recovery performance and cost.

Development of the Computer Room Environments and Infrastructure Management Systems (전산실 환경 및 전산 인프라 관리 시스템 개발)

  • Jung, Jin-Uk;Kim, Su-hong;Kim, Byung-kyu;Hwang, Min-Tae;Jin, Kyo-Hong
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.10a
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    • pp.992-995
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    • 2015
  • In this paper, we developed the computer room environments and infrastructure management systems to operate various networking devices and the infrastructure in the room, stably. The developed systems are composed of the computer room environment management system and the computing infrastructure management system. The computer room environment management system performs the role which the temperature and humidity detection node periodically detects the temperature and humidity and transmits the information to the remote intelligent server. The computing infrastructure management system enables the computer room's manager to check the information and maintenance history of the computing devices with a smart device supporting NFC(Near Field Communication).

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The Adoption Degrees of Social Capital and IT Infrastructure, and Their Effects on Knowledge Management Processes (사회적 자본 및 정보기술 하부구조의 도입수준과 지식경영 과정들에 대한 영향)

  • Choe, Jong-Min
    • The Journal of Information Systems
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    • v.18 no.3
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    • pp.183-210
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    • 2009
  • This study investigated the degrees of knowledge management processes according to the levels of social capital(i.e., inter-departmental communication, trust, cooperation and integration) as well as information technology(IT) infrastructure(i.e., knowledge storage and transfer IT, and knowledge search IT) in Korean manufacturing firms. We also demonstrated the differences in organizational performance under various degrees of knowledge management processes. Through cluster analysis with social capital variables, we classified sample firms into five groups; 'the highest firms', 'higher firms', 'middle firms', 'lower firms', and 'the lowest firms'. It was also observed that the degrees of knowledge management processes and organizational performance in 'the highest firms' is the highest. With a structural equation modeling technique, the causal relationships among social capital, IT infrastructure, knowledge management processes, and organizational performance were confirmed. Hence, it is concluded that social capital and IT infrastructure have direct effects on knowledge management processes, and indirectly influence organizational performance through the degrees of knowledge management processes.