• The KIPS Transactions:PartC
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• v.13C no.4 s.107
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• pp.427-434
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• 2006

Broadband Convergence Network(BcN) is a critical infrastructure to provide wired-and-wireless high-quality multimedia services by converging communication and broadcasting systems, However, there exist possible danger to spread the damage of an intrusion incident within an individual network to the whole network due to the convergence and newly generated threats according to the advent of various services roaming vertically and horizontally. In order to cope with these new threats, we need to analyze the vulnerabilities of BcN in a system architecture aspect and classify them in a systematic way and to make the results to be utilized in preparing proper countermeasures, In this paper, we propose a new classification of vulnerabilities which has been extended from the ITU-T recommendation X.805, which defines the security related architectural elements. This new classification includes system elements to be protected for each service, possible attack strategies, resulting damage and its criticalness, and effective countermeasures. The new classification method is compared with the existing methods of CVE(Common Vulnerabilities and Exposures) and CERT/CC(Computer Emergency Response Team/Coordination Center), and the result of an application to one of typical services, VoIP(Voice over IP) and the development of vulnerability database and its management software tool are presented in the paper. The consequence of the research presented in the paper is expected to contribute to the integration of security knowledge and to the identification of newly required security techniques.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.6B
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• pp.440-449
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• 2008

This paper is to analyze the feasibility of area of agricultural and fishing village as the link of the broadband convergence network(BcN) build-up. For the project feasibility analysis, we utilized the questionnaire of experts and drew the new index of evaluation. By using the AHP technique, we evaluated the feasibility. And by reviewing precedent papers and references, it drew proper evaluation criteria and evaluated BcN feasibility using AHP; economic feasibility, technological feasibility and policy feasibility were figured out as main criteria and resulted evaluation criteria for BcN feasibility. As a result, we found the business enforcement was exposed to be apposite and inconsistency index showing the reliability of the analysis was showed up lowly as 0.0566. Afterward, the BcN business of construction contribute to the living improvement of a nation. Moreover, there will be a value as the basic materials for reasonably propelling the BcN project.

• Information and Communications Magazine
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• v.26 no.3
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• pp.52-59
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• 2009

본 고에서는 정보통신 기술과 전쟁이론의 결합을 통하여 새롭게 제시되고 있는 네트워크중심전(Network-centric warfare)의 기본철학을 지원하는데 있어서 필수적으로 요구되는 도구의 통합과 정보의 통합을 효과적으로 추진하기 위하여 통신 네트워크의 요구사항을 도출하고, 이를 만족시키기 위하여 BcN(광대역통합망) 아키텍처를 기반으로 Military-BcN 아키텍처의 기본 설계 방향에 제시한다.

• Electronics and Telecommunications Trends
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• v.19 no.6 s.90
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• pp.66-73
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• 2004

2004년도 정보통신부의 IT839 전략에 따르면 8대 신규 서비스로 인터넷 전화(VoIP)와 3대 첨단 인프라로 광대역 통합망(BcN)을 선정한 바 있다. 이에 본 고에서는 9대 신성장동력에서 공동으로 활용하기 위한 VoIP와 BcN을 연계한 기술 동향을 설명한다. SIP 와 H. 323에 의한 VoIP 서비스가 제공되면서 네트워크 구조 변화가 시작되었다. 유선 네트워크, 무선 이동통신 네트워크, 인터넷 등을 통합하는 유무선 통합네트워크(BcN)는 VoIP 기술로 구축될 것이다. 본 고의 구성으로는 VoIP 기술 특성을 설명하고, VoIP 표준 동향을 분석한 후에 앞으로 구축될 BcN VoIP 의 발전 방향에 대하여 설명한다. VoIP 기술은 회선 정합및 인터넷 정합 기술과 H. 323, SIP, MEGACO 등의 프로토콜 기술과 VoIP 품질을 결정하는 코덱 기술이있다. VoIP 표준은 IETF에서 제정한 SIP를 중심으로 네트워크 특성을 고려하여 3GPP, 3GPP2, ITU에서개발하고 있다. BcN VoIP 는 기존의 VoIP 기술을 발전시켜 음성 품질이 오디오 수준으로 향상되고, 유선과 무선, 방송이 통합되는 제어 기술과 연계하여 실시간 멀티미디어 서비스를 제공할 것이다.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2006.07a
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• pp.739-739
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• 2006

• Information and Communications Magazine
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• v.23 no.10
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• pp.31-39
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• 2006

광대역통합망(BcN) 구축을 통해 언제.어디서나 광대역정보통신서비스를 국민에게 제공하여 국민의 삶의 질 향상과 정보통신산업을 발전시켜 고용창출과 소득증대에 기여할 수 있도록 하기 위하여 유비쿼터스 도시(u-City) 개발 과정에 도시의 핵심 인프라로 설계, 구축하는 방안이 대두되고 있다

• Journal of Korea Multimedia Society
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• v.10 no.4
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• pp.462-469
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• 2007

ATM protocol has the techniques such as cell discarding priority, traffic shaping and traffic policing. ATM based MPLS(Multiprotocol Label Switching) is discussed for its provisioning QoS commitment capabilities, traffic engineering and smooth migration for BcN using conventional ATM infra in Korea. This paper proposes preventive congestion control mechanism for detecting HTR(Hard To Reach) LSP(Label Switched Path) in ATM based MPLS systems. In particular, we decide HTR LSP using real time signaling information(etc., PTI,AIS/RDI) for applying HTR concept in circuit switching to ATM based MPLS systems and use those session gap and percentage based control algorithm that were used in conventional PSTN call controls. We concluded that it maximized the efficiency of network resources by restricting ineffective machine attempts. Proposed control can handle 208% call processing and more than 147% success call, than those without control. It can handle 187% BHCA(Busy Hour Call Attempts) with 100 times less than use of exchange memory.

• TTA Journal
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• s.107
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• pp.30-33
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• 2006

• Information and Communications Magazine
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• v.22 no.3
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• pp.44-50
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• 2005

• Information and Communications Magazine
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• v.22 no.3
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• pp.51-58
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• 2005