• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.36 no.4B
• /
• pp.386-390
• /
• 2011

Modem warfares have changed from PCW (platform Centric Warfare) to NCW (Network Centric Warfare). Therefore, it is more important to operate and manage the network. This paper proposed a node management scheme in military wireless networks. In military wireless networks, nodes can join and leave the networks easily. It causes a degradation of network capacity. This paper figured out a problem caused by node which is leaving the network. This paper proposed a RSSI based method of estimating and detecting the leaving nodes in the networks. Finally, an experimental result was demonstrated to show the efficiency of the proposed method.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.11 no.2
• /
• pp.410-415
• /
• 2007

Recent advances in sensor network technology have open up challenges for its effective routing. Routing protocol receives most of the attention because routing protocols might differ depending on the application and network architecture. In the rapidly changing environment and dynamic nature of network formation efficient routing and energy consumption are very crucial. Sensor networks differ from the traditional networks in terms of energy consumption. Thus, data-centric technologies should be used to perform routing to yield an energy-efficient dissemination. By exploiting the advantages of both ant colony optimization techniques in network routing and the ability of data centric muting to organize data for delivery, our approach will cover features for building an efficient autonomous sensor network.

• Journal of the military operations research society of Korea
• /
• v.34 no.3
• /
• pp.53-66
• /
• 2008

Information Grid that connects Sensor Grid and Shooter Grid with network is the core infrastructure to enable the NCW concept. The U.S. DoD(Department of Defense) has developed the GIG(Global Information Grid) as the Information Grid that connects all of the DoD mission areas. Then the U.S. DoD has incrementally constructed GIG. In this respect, the case of the U.S. DoD's GIG construction refers to materializing ROK Information Grid concept. Therefore we studied the U.S. DoD's GIG construction trend and analyzed ROK's GIG construction trend. In result this paper proposes the way to develop and construct ROK's GIG.

• Information and Communications Magazine
• /
• v.28 no.4
• /
• pp.18-27
• /
• 2011

네트워크중심전(NCW) 구현을 위한 상호운용성의 중요성이 날로 증대되고 있는 시점에서 전투원에게 보다 빨리, 보다 저렴하게, 보다 우수한 무기체계를 제공하고자 하는 국방획득환경의 변화로 인해 국방 모델링 및 시뮬레이션을 활용한 SBA에 대한 관심이 고조되고 있다. 그러나 현재의 국방 모델링 및 시뮬레이션 모델은 유무선 네트워크 통신 효과를 적절히 반영하거나 고려하지 못하고 있기 때문에 다양한 네트워크 영향 평가 자체를 할수 없다. 그런 관점에서 우리군이 무기체계 특히 통신시스템을 획득함에서 있어 네트워크중심전(NCW) 구현을 위한 수단으로서의 네트워크중심 국방 모델링 및 시뮬레이션(이하 Network -Centric DM&S)을 활용하여 SBA를 적용하는 방안을 도출하고자 한다. 이에 한국군 국방 모델링 및 시뮬레이션에서 Network-Centric DM&S의 개념과 필요성을 언급하고, 통신시스템과 갈은 무기체계획득분야에서 Network-Centric DM&S를 활용한 SBA 적용 방안과 그 적용사례를 고찰하고자 한다.

• Electronics and Telecommunications Trends
• /
• v.33 no.5
• /
• pp.86-94
• /
• 2018

Information-Centric Networking (ICN) has been recognized as a new networking technology for the upcoming data-centric 4th industrial revolution based society. In addition, it has noted that Pub/Sub-style communication is rapidly growing in areas including big data processing and microservice as well as the existing Internet of Things and social networking technologies. Therefore, ICN is highly needed to efficiently support Pub/Sub-style communication for successful deployment as a next-generation network infrastructure technology. This paper summarizes the recent research trends of Pub/Sub communication technologies over ICN, and discusses future research issues.

• IE interfaces
• /
• v.12 no.1
• /
• pp.79-93
• /
• 1999

As most of information systems developed are data-centric rather than process-centric, it is difficult for users to understand and manage the system from the viewpoint of work processes. To resolve the problem of the data-centric design, we propose a new method to design WFMSs(Workflow Management Systems), which are focused on processes and modified from current information engineering methods. In this research, the drawing approval and engineering change approval process of a K manufacturing company has been analyzed as a sample process. This method takes two steps, i.e., process analysis and system design. In the prosess analysis, data and processes are analyzed, and functions and tasks are derived from the processes. In the system design, a data model for the operation of WFMS is designed, and based on this data model, build-time and run-time functions of WFMS are designed.

• Journal of the Korea Society of Computer and Information
• /
• v.23 no.11
• /
• pp.95-101
• /
• 2018

In this paper, we propose an efficient friendly forces location data sharing algorithm in a troops using a low bandwidth radio. The future battlefield is a 'Network Centric Warfare' with a concept of identifying the position and power of the enemy and friendly forces and leading the battlefield to victory through proper links at the time of our need. One of the basic elements in the 'Network Centric Warfare' is to share friendly forces location data. The bandwidth and transmission rates of radio used in battalion are low. Nevertheless, we should share our locations data almost in real time for effective fighting in a war situation. This paper describes the efficient method of friendly forces location data sharing based on low bandwidth radio. In particular, the concept of 'network-centered warfare' is reflected in the troop below the battalion to present an integrated and efficient way to shared location data of friendly forces.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2024.05a
• /
• pp.141-143
• /
• 2024

Cell-Free 시스템은 각 access point(AP)들이 고정적으로 특정 cell 내에 존재하는 유저(UE)에게 서비스하지 않고 서비스 지역 내에 넓게 분산 배치되어 있어 효율적으로 각 유저들에게 서비스할 수 있는 시스템이다. 그러므로 Cell-Free 시스템에서는 최적의 성능을 갖는 UE-AP association 을 찾는 것이 중요한 요소 중 하나로 여겨진다. 따라서 본 논문에서는 User-Centric 방식을 사용하는 Cell-Free MIMO 시스템에서 물리계층보안을 향상시키는 UE-AP association 기법을 제안한다.

• Journal of Communications and Networks
• /
• v.17 no.3
• /
• pp.296-305
• /
• 2015

Coupled schemes between service-oriented architecture (SOA) and Web 2.0 have recently been researched. Web-based content providers and telecommunications company (Telecom) based Internet protocol television (IPTV) providers have struggled against each other to accommodate more three-screen service subscribers. Since the advent of Web 2.0, more abundant reproduced content can be circulated. However, because according to increasing device's resolution and content formats IPTV providers transcode content in advance, network bandwidth, storage and operation costs for content management systems (CMSs) are wasted. In this paper, we present a user centric CMS for open IPTV, which integrates SOA and Web 2.0. Considering content popularity based on a Zipf-like distribution to solve these problems, we analyze the performance between the user centric CMS and the conventional Web syndication system for normalized costs. Based on the user centric CMS, we implement a social Web TV with device-aware function, which can aggregate, transcode, and deploy content over social networking service independently.

• Information and Communications Magazine
• /
• v.29 no.9
• /
• pp.51-55
• /
• 2012

본고에서는 최근 미래 인터넷의 주요 핵심 기술로 주목 받고 있는 콘텐츠 중심 네트워킹 기술에 대해서, 이러한 기술연구가 시작되게 된 배경과 관련 연구, 산업체 및 표준 현황에 대해 살펴본다. 특히 여러 후보 기술들 중, 그 개념의 완성도 및 실현 가능성에 있어서 가장 앞서 있는 CCN (Content-Centric Networking)을 중심으로 콘텐츠 중심 네트워킹의 동작원리를 설명하고, 관련 주요 사용 예 (Use Case)와 향후 전망에 대해 짚어본다.