• TTA Journal
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• s.34
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• pp.58-76
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• 1994

이동통신은 이동가입자가 무선을 이용하여 통신하는 방식이므로 제3자에 의한 중요 정보도청 방지와 특정가입자의 정보보호 및 불법사용자 문제가 대두된다. 전자를 위하여 음성 및 메시지 암호화가 후자를 위하여 가입자 인증이 필요하다. 본고는 이동국과 기지국간의 CDMA 무선인터페이스 표준안인 IS-95에 규정된, CDMA 이동통신시스팀에서의 인증 및 암호화 기능을 분석하고 이를 구현하기 위한 구조 및 방안을 검토한다.

• The KIPS Transactions:PartB
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• v.11B no.1
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• pp.91-98
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• 2004

This paper proposes how to support various media on online conversational activity using XML(extensible Markup Language). The method converts media information into XML based messages and handles alike conventional text based messages. The XML based messages are unified to an XML document, and then a HTML document is generated using the XML and an XSLT documents in a server. A user in each client can play or present media through the hyperlink that is associated media information on the HTML document. The suggested method supports use of various media (text, image, audio, video, documents, etc) and efficient maintenance of font size, color, and style on messages according to extension and modification of XML tags. For application, this paper implemented the system to support media that has client and server architecture on online conversational activity. A user in each client inputs text or media based message using JAVA applet and servlet on the system, and conversational messages on every users' interfaces are automatically updated whenever a user inputs new message. Media on conversational messages are played or presented according to a user's click on hyperlink. Applications for the media presentation are as follows : distance learning, online game, collaboration, etc.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.3
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• pp.290-294
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• 2018

Modern warfare exhibit a NCW (Network Centric Warfare) aspect through quick situation awareness and Command and Control. And Tactical messages operate on various tactical data links (TDLs). For monitoring TDL messages processed by data link processor(DLP), message analysers are generally developed as a component during system development. In addition, in order to forward TDL messages processed by DLP to the message anayzer, the interface messages between DLP and message analysers should be defined interface control document(ICD). We propose the methods using UDP or TCP packets provided by TDL layers that are delivered to DLP without communicating directly with DLP. Depending on TDL message standards and Interface Control Documents(ICDs), we design the message analyzer which communicates with data link processor using internal messages. Using known header field information from the TDL application standard such as JREAP-C, we can quickly filter candidate packets against collected packets and use the full data size information contained in the headers to verify the completed message. Because the methods proposed in this paper do not communicate directly with DLP, the methods proposed in this paper are enable to analyze the TDL application messages such as JREAP-C or Link-K without constraints in existing methods that should be reflected in the system configuration and ICD.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04d
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• pp.385-387
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• 2003

본 논문에서는 블루투스와 COMA용 무선단말 기능이 내장된 PDA를 사용하여 인터넷 정보가전용 유니버설 리모트 컨트롤러를 설계 구현한다. PDA 단말로 정보가전을 원격 제어하고 모니터링하기 위해 XML과 CDMA의 SMS 정보가전 메시지 형식을 설계한다. 또한 흠 서버에는 블루투스와 CDMA를 포팅하고 정보가전 명령 및 메시지 매핑과 PDA 상에 유니버설 리모트 컨트롤러 인터페이스를 구현하여 테스트한다.

• The Transactions of the Korea Information Processing Society
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• v.13 no.3
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• pp.111-121
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• 2024

Recently, thanks to the development of artificial intelligence technologies such as image recognition, research on unmanned aerial vehicles is being actively conducted. In particular, related research is increasing in the field of military drones, which costs a lot to foster professional pilot personnel, and one of them is the study of an intelligent framework for autonomous mission performance of reconnaissance drones. In this study, we tried to design an intelligent framework for unmanned aerial vehicles using the methodology of designing an intelligent framework for service robots. For the autonomous mission performance of unmanned aerial vehicles, the intelligent framework and unmanned aerial vehicle module must be smoothly linked. However, it was difficult to provide interworking for drones using periodic message protocols with model-based interfaces of intelligent frameworks for existing service robots. First, the message model lacked expressive power for periodic message protocols, followed by the problem that interoperability of asynchronous data exchange methods of periodic message protocols and intelligent frameworks was not provided. To solve this problem, this paper proposes a message model extension method for message periodic description to secure the model's expressive power for the periodic message model, and proposes periodic and asynchronous data exchange methods using the extended model to provide interoperability of different data exchange methods.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.19 no.3
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• pp.153-162
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• 2009

When a private information security incident occurs, the people who own the information are not acknowledged about their information leakage until those affairs appear in public media. This research aims at developing a mobile alarm system for acknowledging suspicious events to the information owners. The mobile alarm system was designed considering the limited user interface of mobile terminal and concept of "personal information leakage message tree" is deployed. The message tree contains every possible situation about personal information leakage and the leaves of the tree has several choices that the information owner can select. This message tree concept enables each information owner to manager his or her information leakage situation by just pushing a few buttons of mobile device. The contribution of this paper is in design of a comprehensive alarm message tree and development of mobile alarm system containing the message tree concept.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.160-161
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• 2018

ITU-R Study Group Working Party 5B에서는 해상에서 자율운항선을 안전하게 운항하기 위해 자율운항선을 통한 제어센터-VTS, 제어센터-유인선 간의 정보교환이 이루어 질 수 있도록 Vessel traffic control voice relay의 기능을 제시하였다. 이에 자율운항선을 통해 제어센터-VTS, 제어센터-유인선 간의 원활한 정보교환이 가능하도록 사용자 기능 요구사항, 사용자 비기능 요구사항, 인터페이스 요구사항으로 분석함으로써 통신중계시스템 설계 및 각 운용 기기별 정보교환 체계를 구축하였다. 하지만 자율운항선-타 선박간의 충돌 위험성을 감지할 경우 충돌회피를 위한 흐름 및 통신중계시템을 활용한 메시지 처리과정은 설계되지 아니한 실정이다. 이에 본 연구에서는 액티비티, 제어흐름, 작업 흐름 등의 표현이 가능한 UML(unified modeling language)을 활용함으로써 항해단계 중 발생할 수 있는 상황별 시나리오를 제어 흐름 형태로 표현한 정보교환 메시지 처리 알고리즘을 제안하고자 한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.10 no.1
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• pp.15-20
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• 2010

This paper proposes a multihoming-based vertical handover scheme using Proxy binding update to minimize handover delay and packet loss while a mobile node moves to a heterogeneous access network. When a mobile node moves to a heterogeneous access network, the proposed scheme can provide a mobile node with fast and seamless handover by performing layer-3 handover using its new interface while the other interface is still communicating in the old access network. The proposed Proxy binding update is different from the Mobile IP binding update in that it includes home addres (HoA) of the old interface instead of the new interface. The performance analysis shows that the proposed scheme can efficiently reduce vertical handover delay and packet loss.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.1466-1469
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• 2011

플러그인 프레임워크는 기존 M&S 프레임워크에서의 문제점인 구성요소 간 높은 종속관계 및 낮은 유연성을 해결하고자 개발된 프레임워크 설계 방식으로, 프레임워크를 구성하는 컴포넌트를 플러그인으로 제공하여 구성요소의 추가 및 변경이 동적으로 이루어질 수 있게 한다. 또한 플러그인 컴포넌트간 통신을 위한 메시지 구조 정의가 실행 시점에 동적으로 결정되어, 컴포넌트 간 상호 독립적인 인터페이스를 보장해준다. 하지만, 플러그인 컴포넌트들의 조합이 이뤄진 상태에서 전체적인 메시지 연결 흐름이 원활하기 위해서는 각 컴포넌트에서 개별적으로 작성된 인터페이스에 대한 검증이 사전에 이뤄줘야 한다. 이에 본 논문에서는 XML 기반으로 작성된 객체 모델 명세서에 대한 무결성과 중복성을 검증할 수 있는 객체 모델 명세서 검증 도구에 대해 제안하고 이에 대한 설계내용을 설명하도록 한다.

• The KIPS Transactions:PartC
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• v.15C no.5
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• pp.429-438
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• 2008

NGN is a packet-based converged network to support session and non-session services in QoS-enabled broadband transport network. QoS based resource control must be defined to support differentiated services for various network users in NGN. We designed and implemented DIAMETER protocol as the Rs interface, and also defined mapping rules between DIAMETER information elements and SDP(Session Description Protocol) attributes for QoS based resource control in NGN. We selected and implemented DIAMETER protocol among alternate resource control protocols in ITU-T as the Rw interface because of simple interworking method with Rs interface and adequate AAA functionality. We defined mapping rules of messages and information elements between Rs and Rw interfaces for resource control from a service layer to a transport layer. Based on the mapping rule of QoS information elements and the interworking method between Rs and Rw interfaces, we built up a test-bed that support differentiated delivery services.