• Convergence Security Journal
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• v.2 no.1
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• pp.1-15
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• 2002

Network management system exchanges information between management servers to manage other network as well as local network for MSP(Management Service Provider) business. Because communication line that is used here is communication line that several users use, other user can steal a important information that are passed through communication line. For these information include important information of administrator or equipments, These information should be protected. Usually it is use much SSL to security of communication and it wish to protect information using SSL in communication between management servers' or communication between server and client at network management system to use much SSL for security of communication.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.690-694
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• 2007

This study provide Car driver with car sensor information which is car trouble code in engine and many sensors. This provide car manager with many information of tar sensors when we go to vehicle maintenance. This system consist of embedded linux system which uses RS232 and EML327 for CAN communication of car system. This System can control digital appliances in home network using wireless and ZigBee. Finally this is a lot of application for embedded linux system which get sensor informations of car control sensor system.

• Digital Contents
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• no.12 s.127
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• pp.76-77
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• 2003

최근 생활과 비즈니스가 IT인프라에 의존하는 경향이 갈수록 증가함에 따라 IT인프라 관리의 성공 여부는 조직 전체의 업무 효율은 물론 비즈니스의 흥망을 좌우하는 주요시안으로 등장했다.네트워크 트래픽은 사람의 혈관을 흐르는 피와 같아 한곳에 몰리거나 폭주하게 되면 전체 네트워크에 치명적인 장애를 일으키고 나아가 비즈니스 퍼포먼스 저하를 초래하게 된다. 따라서 전산관리자가 트래픽을 과학적으로 분석, 진단해 적극적인 제어를 할 수 있는 필요성이 날이 갈수록 부각되고 있다.국내 최초 네트워크 트래픽 관리 솔루션 개발 범세계적으로 트래픽 관리 솔루션 시장이 인식되기도 전인 1998년 12월, 이미 인터넷 비즈니스에 꼭 필요한 핵심 엔진을 개발한 기업이 있다. TOP/IP 기반의 네트워크를 효율적으로 제어 및 관리 할 수 있는 다양한 제품을 출시, 트래픽 관리 분야에서 세계적인 기술력을 선보인 전문 IT 기업 스콥정보통신(대표 김찬우)이 바로 그 주인공이다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.07a
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• pp.105-106
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• 2016

본 논문에서는 방범용 CCTV 시스템의 빈번한 장애를 처리하는데 원격지 방문으로 소요되는 시간과 인력의 소모를 개선하기 위해 모니터링 및 단순장애 자가 처리 기능을 탑재한 방범용 CCTV를 위한 지능형 모니터링 시스템을 제안한다. 지능형 모니터링 시스템은 센서 모듈에서 측정된 값을 지능형 모니터링 모듈에서 취합하고 모니터링 하여 자가 처리 여부를 판단하고, 이에 따라 제어모듈과 통신하거나 상황실에 알림 등의 여부를 판단하여, 네트워크를 통해 원격으로 방범용 CCTV의 상태를 모니터링하고 장애발생을 예측하여 자가 처리 하거나 원격 처리할 수 있다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.3
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• pp.125-130
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• 2015

In this paper, a command and control (C2) system development using a network emulator is treated. Due to the development of information and communication technologies enabling reinforcement of information exchange and computational capability, an operational concept network centric warfare (NCW) was introduced. In here, it summarizes a developmental test environment build based on dummynet, one of the software based network emulator, and an operational concept of target command and control system. Moreover, I explain command and control system developmental test cases and results, and suggest an operational concept to overcome limitations of target communication system. I expect this concept will reduce data traffic of proposed C2 system especially plot messages which is distributed same data with short interval.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.3A
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• pp.259-266
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• 2011

Femtocells are expected as the surest way to increase the system capacity with higher-quality links and more spatial reuse in future networks. In spite of their great potential, the system capacity is highly susceptible to network density because a large portion of users are exposed to inter-cell interference (ICI). In this work, we proposed a dynamic interference avoidance scheme in densely deployed cell environments. Our proposed DDIA (Distributed Dynamic ICI Avoidance) scheme not only works in a fully distributed manner, but also controls interference link connectivity of users with high agility so that it is suited for self-organizing networks (SONs). We introduced the concept of ICI-link and two-tier scheduling in designing the DDIA scheme. To avoid ICI without any central entity, our scheme tries to harmonize all base stations (BSs) with users adaptively. Through extensive simulations, it was shown that our proposed scheme improves the throughput of users by more than twice on average compared to the frequency reuse factor 1 scheme, who are exposed to ICI while maintaining or even improving overall network performance. Our scheme operates well regardless of network density and topology.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.9
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• pp.1347-1356
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• 2022

In this paper, we investigate the properties of CoGe thin film-based galvanic cells as a function of their dimension (cell length, width, etc.) and show their application as sensors to Arduino-based IoT sensor networks to detect water contact. Because these CoGe thin film-based galvanic cells do not require mechanical strains or temperature gradients unlike piezoelectric and thermoelectric energy harvesters, we think that these thin film-based galvanic cells are more suitable for self-powered sensor networks demanding sustainable and robust energy harvesters. In the past, a sputter-deposited CoGe thin film has not been intensively investigated for energy harvesting appilcations. Thus, in this study, we perform a feasibility study of galvanic cells composed of a sputter-deposited CoGe thin film to see if they can be applied as potential self-powered sensors. We believe that this paper will be of great help in developing even more enhanced sensor networks.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.527-530
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• 2010

WSN is composed of a lot of small sensors with the limited hardware resources. In WSN, at the initial stage, sensor nodes are randomly deployed over the region of interest, and self-configure the clustered networks by grouping a bunch of sensor nodes and selecting a cluster header among them. Specially, in WSN environment, in which the administrator's intervention is restricted, the self-configuration capability is essential to establish a power-conservative WSN which provides broad sensing coverage and communication coverage. In this paper, we propose a communication coverage-aware cluster head election algorithm for Herearchical WSNs which consists of communication coverage-aware of the Base station is the cluster head node is elected and a clustering.

• Information and Communications Magazine
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• v.21 no.6
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• pp.13-21
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• 2004

RFID 기술은 물품 등 관리할 사물에 아주 작은 전자태그를 부착하고 전파를 이용하여 사물의 정보(Identification) 및 주변 환경정보를 자동으로 추출하여 관리하는 것으로 지금까지 사람 중심(anyone) 정보화에서 사물을 중심(anything)으로 정보화의 지평을 확대시킬 수 있는 신정보화의 출현을 의미하며 향후 IT 시장을 선도할 유망기술이다. 정보통신부는 RFID 기술을 기반으로 하는 정보화를 u-센서 네트워크(USN : Ubiquitous - Sensor Network)라는 개념으로 정립하였으며, RFID 서비스를 활성화하고 u-센서 네트워크 인프라를 구축하여 국민소득 2만달러달성을 위한 IT 산업육성 정책을 적극적으로 추진하고 있다. RFID/USN 구축을 위한 정책 추진전략의 일환으로 정보통신부 장관을 포함하여 민.관 최고 의사결정권자가 참여하는 전략협의회가 구성되었으며 USN 구축 기본계획을 기반으로 국가 차원의 RFID/USN 구축 실행을 위한 마스터플랜을 수립하여 기술개발, 표준화, 정보보호, 산업 적용 및 시범 서비스 등의 정책을 실행할 예정이다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.820-823
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• 2011

WSN is composed of a lot of small sensors with the limited hardware resources. In WSN, at the initial stage, sensor nodes are randomly deployed over the region of interest, and self-configure the clustered networks by grouping a bunch of sensor nodes and selecting a cluster header among them. In this paper, we propose a self-configuration routing protocol for WSN, which consists of step-wise ripple routing algorithm for initial deployment, effective joining of sensor nodes. RRA is search node in RF-coverage of each node, which result in fast network connection, reducing overall power consumption, and extending the lifetime of network.