• Title/Summary/Keyword: 수동형 광가입자망

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차세대 수동형 광가입자망 표준화 및 기술개발 동향

  • Yu, Hak;Kim, Geun-Yong;Kim, Seong-Chang;Lee, Dong-Su;Kim, Yeong-Seon
    • Information and Communications Magazine
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    • v.31 no.8
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    • pp.74-83
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    • 2014
  • 수동형 광가입자망 (PON: Passive Optical Network) 기술은 가입자의 단말과 국사의 장비를 광섬유로 직접 연결하여 기존의 전화선 및 동축케이블을 이용한 xDSL 및 HFC등에 비해 전송속도가 빠르고 관리가 수월한 인터넷 서비스 제공이 가능한 기술이다. 본고에서는 ITU-T와 IEEE에서 진행중인 차세대 수동형 광가입자망 기술의 국제 표준화 동향에 대하여 알아보고, 관련 기술개발 현황 및 새롭게 부각되는 스마트 광 분배망 기술과 SDN (Software Defined Network) 기반 광가입자망 운용관리 등의 연구분야에 대하여 알아본다.

IPTV testbed based on FTTH network (광가입자망 기반 IPTV 테스트베드)

  • Song Ho-Young;Lee Byung-Tak;Sung Jung-Sik;Shim Jae-Chan;Kwon Jeong-Gook;Kim Bong-Tae
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.43 no.5 s.347
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    • pp.24-34
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    • 2006
  • The broadband access network is a worldwide trend and the related IPTV service is booming. However, the IPTV deployment has been delayed in Korea because of the business relationship between the communication and broadcasting area and the lack of the related laws. As a means to the development of FTTH-based high-quality service platform and next-generation equipment, ETRI has been building own FTTH service center with a network operation center and IPTV service equipments, also connecting it with commercial FTTH infrastructures made by network operators. In this paper, we describe the related technologies about FTTH-based IPTV testbed.

Wavelength Division Multiplexing Passive Optical Network Technology (WDM PON 기술)

  • Park, J.D.;Jung, E.S.;Kim, B.K.;KIm, T.J;Yoo, J.J.;Kim, B.W.;Kim, B.T.
    • Electronics and Telecommunications Trends
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    • v.19 no.6 s.90
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    • pp.43-54
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    • 2004
  • WDM-PON은 가입자망의 트래픽 병목 현상을 해결하고, 다양한 서비스 품질을 제공하면서 고속화된 데이터 전송을 위해 가입자 당 독립 파장을 할당함으로써 가입자의 요구 대역에 제한을 받지 않으며, 보안성이 보장되는 차세대 WDM 기반 수동형 광가입자망이다. 특히 고성능, 저가인 광소자를 포함한 광모듈의 조기개발이 FTTH 네트워크 초기 시장 및 서비스를 선점하는 척도가 될 것으로 예상된다. 본 논문은 WDM 기반 수동형 광가입자망 동작 방식, 광다중화기 및 역다중화기, 그리고 WDM -PON과 WDM 다중화 기술인WDM/TDM, WDM/SCM, WDM/CDM을 포함한 다양한 광 수동 가입자망 구성 기술을 소개한다.

Fixed Multi-Thread Polling based Dynamic Bandwidth Allocation in Long-Reach PON (LR-PON에서 고정형 다중 스레드 기반의 동적대역할당)

  • Choi, Su-il;Kim, Jinsul
    • Journal of Digital Contents Society
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    • v.18 no.6
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    • pp.1207-1211
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    • 2017
  • Long-Reach PON (LR-PON) is a broadband access network using passive optical network (PON) technology which the reach is extended to 100 km or higher. A major challenge in LR-PON is that the propagation delay between OLT and ONUs is increased by a very significant amount. To effectively and fairly distribute the upstream bandwidth dynamically in LR-PON, we propose a new periodic and multi-thread polling based dynamic bandwidth allocation (DBA) algorithm. We compare the proposed algorithm with traditional DBAs and show its advantage on average packet delay. Numerical results are analyzed under varying offered loads.

A Construction Scheme of Next Generation Wire Communication System by using Long-reach WDM-PON (장거리 전송 파장분할 다중방식 수동형 광가입자망을 이용한 차세대 국방 유선통신체계 구축방안)

  • Kim, Min-Hwan;Lee, Sang-Mook;Lee, Chang-Hee
    • Journal of the Korea Institute of Military Science and Technology
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    • v.10 no.2
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    • pp.90-99
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    • 2007
  • We demonstrate an 80km-reach 64-channel DWDM-PON based on wavelength-locked F-P LDs by changing the position of the C-band BLS for upstream channels from the CO to the RN. It mitigates the necessity of the high power C-band BLS and its handling problems. It also reduces back scattering induced penalty. We obtained less than $10^{-6}$ PLRs in all 128channels through 80km SMF. We also demonstrate a 240km-reach DWDM-PON based on wavelength-locked F-P LDs by adding a bidirectional erbium-doped fiber amplifier(EDFA). We show packet-loss-free transmission in all 128channels at 125 Mb/s per channel over 240km SMF We report the detuning effect of arrayed waveguide gratings(AWGs) and crosstalk effect in the implemented system. We Propose an architecture of a next generation defense wire communication system with the demonstrated long-reach DWDM-PON.

A multistage wavelength division multiplexed passive optical network (다단 분기 파장분할 다중방식 수동형 광가입자망)

  • Park, Kun-Youl;Park, Jae-Hyoung;Kim, Geun-Young;Kim, Jin-Hee
    • 한국정보통신설비학회:학술대회논문집
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    • 2008.08a
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    • pp.112-115
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    • 2008
  • The multistage wavelength division multiplexed passive optical network (WDM-PON) with multiple remote nodes (RN) can accommodate widely spread subscribers efficiently and it increases the channel usage. We implemented a multistage RN using band add-drop filters and it was applied to a wavelength-locked Fabry-Petor laser diode based gigabit WDM-PON.

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Performance Analysis of Optical Line Termination System in ATM based Passive Optical Network (ATM 기반 수동 광가입자 망에서의 광선로 종단 시스템의 성능 분석)

  • Park, Sang-Jo;Kang, Koo-Hong
    • Journal of KIISE:Information Networking
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    • v.29 no.1
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    • pp.40-47
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    • 2002
  • This paper analyzes the performance of an optical line termination system in ATM based Passive Optical Network(PON) using the operational analysis. We analyze it using system parameters such as utilization, throughput and routing frequency based on the buffer structure in each block of ATM-PON. Furthermore, we derive the mean response time and the visit ratio of each block, and then search the bottleneck block that hinders the system performance. We found that the 622Mbps 16x16 switching block is the bottleneck block for ATM-PON. In this bottleneck block, the loss probability increases rapidly when the cell arrival rate increases.

Wavelength Division Multiplexing Passive Optical Network Technology (WDM-PON 기술)

  • Park, M.Y.;Kim, T.Y.;Jung, E.S.;Yoo, J.J.;Kim, B.W.;Kim, B.T.
    • Electronics and Telecommunications Trends
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    • v.21 no.6 s.102
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    • pp.113-123
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    • 2006
  • WDM-PON은 가입자 별로 파장을 독립적으로 할당하여 전송로를 구성하는 방식으로 전송 프로토콜에 관계없이 전송이 가능하고, 전용선 수준의 대역폭 제공, 전송속도의 제한이 없으며, 서비스 품질을 보장하고, 보안성이 뛰어난 차세대 FTTH 기술로 평가받고 있다. 특히 고성능, 저가인 광소자를 포함한 광모듈의 조기 개발이 FTTH 네트워크 초기 시장 및 서비스를 선점하게 될 것으로 예상된다. 본 논문은 WDM 기반 수동형 광가입자망용 광원, 이러한 광원과 다중화 기술에 따른 WDM-PON, WDM/TDM,WDM/SCM 등 다양한 수동형 광가입자망 구성 기술을 소개한다.

The Development of 1G-PON Reach Extender based on Wavelength Division Multiplexing for Reduction of Optical Core (국사 광역화와 광코어 절감을 위한 파장분할다중 기반의 1기가급 수동 광가입자망 Reach Extender 효율 극대화 기술 개발)

  • Lee, Kyu-Man;Kwon, Taek-Won
    • Journal of Digital Convergence
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    • v.17 no.8
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    • pp.229-235
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    • 2019
  • As the demand for broadband multimedia including the Internet explosively increases, the advancement of the subscriber network is becoming the biggest issue in the telecommunication industry due to the surge of data traffic caused by the emergence of new services such as smart phone, IPTV, VoIP, VOD and cloud services. In this paper, we have developed WDM(Wavelength Division Multiplexing)-PON(passive optical network) based on the 1-Gigabit Reach Externder (RE) technique to reduce optical core. Particularly, in order to strengthen the market competitiveness, we considered low cost, miniaturization, integration technique, and low power of optical parts. In addition, we have developed a batch system by integrating all techniques for reliability, remote management through the development of transmission distance extension and development of capacity increase of optical line by using RE technology in existing PON network. Based on system interworking with existing commercial 1G PON devices, it can be worthy of achievement of wide nationalization and optical core reduction by using this developed system. Based on these results, we are studying development of 10G PON technology.