• Electronics and Telecommunications Trends
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• v.19 no.6 s.90
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• pp.34-42
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• 2004

우리나라는 전국적인 초고속 정보통신망을 구축하고, 전체 가구의 70%(약 1천만 세대)가 초고속 인터넷에 가입하는 등 세계 최고의 정보 인프라를 보유한 IT 강국임은 주지의 사실이다. 그러나 최근 정보통신환경은 인터넷 서비스의 복합, 다양화, 고품질, 고속화 추세로 인해 xDSL 등 기존 기술의 한계를 해결할수 있는 새로운 차세대 가입자망(FTTH) 기술이 요구되고 있는 실정이다. 본 고에서는 국내외 FTTH 기술및 시장 현황을 살펴보고 향후 FTTH 장비 시장 규모를 예측함으로써 우리나라의 FTTH 추진 현주소를파악하고 향후 추진방향을 모색하고자 한다.

• IE interfaces
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• v.18 no.3
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• pp.277-287
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• 2005

In this paper, we deal with a new techno-economic modeling and analysis for optical access networks. In deploying the fiber-to-the-home (FTTH) architecture, network planner needs to consider the following techno-economic issues: when do we need to upgrade existing local access network to FTTH network? how much do we invest to maximize profit? In order to answer these techno-economic questions, we need to consider the impact of emerging technologies and business environment. Toward this end, we develop a new techno-economic modeling to deal with the inherent complexity of technology evolution and cost economics. In particular, the new modeling approach provides us with an techno-economic analysis of technology alternatives such as ethernet passive optical network (E-PON) and wavelength division multiplex passive optical network (WDM-PON). In this analysis, we focus on the impact of critical factors such as the cost characteristic of proposed architecture and digital subscriber line (DSL) subscriber's churn-in to FTTH service and churn-out. We develop mixed integer-programming models for finding the evolution path of local access networks to broadband network architectures.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.4 no.5
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• pp.1077-1083
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• 2000

With rising demand of Internet Service, the existing communication for users (aced the restricted capability and speed, and also failed to satisfy consumer's desire for providing service-quality to them. It can be accomplished the broad-band on subscribe-line to offer various multimedia service to subscriber. But it takes a lot of times and costs. Consequently, it stands out the most economic subscribe-line for acheving a broadband scheme that new transmission technology can be realized the high-speed data communication as the present telephone-line and telephone by the general public of FTTH(Fiber To The Home). As using the pseudo line, this paper have the result that the mesured speed was improved by connecting a variable resistor on the line.

• The Magazine of the IEIE
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• v.23 no.2
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• pp.82-90
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• 1996

이미 도래하고 있는 정보화사회에 있어서 다양한 멀티미디에 XDTLS 서비스를 가입자에게 제공하기 위해서는 가입자망의 광대역화가 핵심적인 부분을 차지한다. 그러나 가입자망의 광대역화에는 많은 시간과 막대한 비용을 필요로 한다. 따라서 FTTH(Fiber to the Home)가 일반화되기 이전까지 가장 경제적인 가입자망의 광대역화 방안의 하나로 고려되고 있는 ADSL/HDSL 장치의 전송기술 개요와 선로환경 및 향후 전망에대하여 검토하여 보았다.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.47 no.1
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• pp.69-76
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• 2010

We describe an all-optical circuit which recognizes the header information of packet-by-packet in the access networks based on FTTH. The circuit's operation is confirmed by an experiment in the recognition of 3 and 4 header bits. The output from the header recognition circuit appears in a signal assigned in the time axis according to the header information. The recognition circuit of header for self-routing has a very simple structure using only delay lines and switches. The circuit is expected that it can be constructed of the high reliability and the low cost. Also, the circuit can solve the problems of the power loss and private security which is the weak point of the TDM-PON method by being established a unique transmission line to each subscriber.

• Information and Communications Magazine
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• v.13 no.5
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• pp.47-51
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• 1996

이미 우리의 현실로 도래하고 있는 정보화 사회의 다양한 멀티미디어 서비스를 가입자에게 제공하기 위하여 초고속정보통신망의 구축이 국가적인 차원에서 점진적으로 진행되고 있으며 특히 가입자망의 분배와 광대역화는 핵심적인 부분을 차지한다. 현재 가입자망의 광대역화를 구현하기 위한 방안으로 여러 가지 다양한 방법이 고려되고 있지만 이의 구현에는 막대한 양의 투자와 많은 시간을 필요로 한다. 따라서 가입자망의 광대역화에 대한 다각적인 고찰과 이에 따른 체계적이고 경제적인 진화 계획의 수립이 요구되고 있다. 본 고에서는 가입자망 광대역화의 최종 목표인 가입자 광케이블(FTTH : Fiber To The Home)의 이전 단계인 FTTC(Fiber To The Curb) 구조하에서 경제적인 FTTC 시스템을 구현할 수 있는 방안중의 하나로 부상하고 있는 SDV(Switched Digital Video)의 기술과 그 응용에 대하여 검토하여 보았다.

• Explosives and Blasting
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• v.13 no.4
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• pp.28-38
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• 1995

This paper was addressed by fall seminar of society of explosives engineers of Korea. In Japan, total length of cable was 600km and tokyo was 260km and it will extend cable tunnel 5~10km every year in Tokyo. NTT service project has been working as a optic fiber net works and in 2010, it will be done. FIF. FTTH so call fiber to the home for the purpose of multiplicity. For the above project. First, it should be developing auto Non-excavation tech, 2nd developing soil recycling system.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2008.10b
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• pp.684-690
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• 2008

FTTH(Fiber to The Home), a next generation communication service, is expected to boost up the growth of the whole IT industry and to creating new businesses by enabling the convergence of the broadcasting and communication technologies. It will consequently contribute to improve the quality of our life. The purpose of this study is to evaluate the performance of EPFSD using the Balanced Scorecard(BSC) model with five perspectives which are known to have inherent relationship: regional economy, regional customer, regional process, innovation and growth in the region, and regional infrastructure. 16 critical success factors(CSFs) and 37 key performance indicators(KPIs) are developed based on the BSC model to measure the performance indicators of the EPFSD.

• IEIE Transactions on Smart Processing and Computing
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• v.1 no.1
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• pp.27-33
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• 2012

The Ethernet Passive Optical Network (EPON) has been considered to be one of the most promising solutions for the implementation of the Fiber To The Home (FTTH) technology designed to ameliorate the "last mile" bandwidth bottleneck. In the EPON network, an efficient and fair bandwidth allocation is a very important issue, since multiple optical network units (ONUs) share a common upstream channel for packet transmission. To increase bandwidth utilization, an EPON system must provide a way to adaptively allocate the upstream bandwidth among multiple ONUs in accordance to their bandwidth demands and requirements. We present a new hybrid method that satisfies these requirements. The advantage of our method comes from the consideration of application-specific bandwidth allocation and the minimization of the idle bandwidth. Our simulation results show that our proposed method outperforms existing dynamic bandwidth allocation methods in terms of bandwidth utilization.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.10 no.3
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• pp.213-219
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• 2017

Recently, the Internet Protocol Television (IPTV) services have become very common, enabling various Internet-based services as well as watching TV. In the IPTV system, a Set-Top box (STB) plays a key role as a network terminal device that transmits and receives realtime multimedia contents. In addition, the IPTV networks are usually supported by broadband optical fiber-base network such as fiber-to-the-home (FTTH), However, a general IPTV STB is regarded as one of the local area network (LAN)-attached devices while sharing the bandwidth of the LAN (e.g., Ethernet). In order to overcome the limited bandwidth utilization by fully facilitating the broadband bandwidth (e.g., 1 Gbps) of the optical fiber-based network, we propose a new FC (Fiber Channel)-embedded IPTV STB which can be directly attached to the optical fiber network. Then, we verify that the impacts of the proposed FC-embedded IPTV STB by organizing the the FC-AL (Fiber Channel-Arbitration Loop) network equipped with the FC-embedded IPTV We measures the average Start-up Delay, Average Reject Ratio and the Number of Concurrent Users through extensive simulations to investigate the performances of the suggested FC-AL-based IPTV network. Surprisingly, the IPTV network architecture with the proposed FC-embedded IPTV STBs has an excellent average start-up delay of less than 10 msec, an acceptable average reject ratio of less than 3 % as well as a linear increase of the number of concurrent users when extending the architecture. This reveals that the proposed FC embedded STB has a superior impacts on the performance of the entire IPTV network by effectively utilizing the broadband bandwidth of the fiber optic-based network.