On the Net Focus 2001 PSTN High Speed

광 네트워크의 배경 On the Net. Focus 2001

네트워크 아키텍쳐의 발전 PSTN High Speed Network ISDN Next Generation Network PSDN Optical Internet Optical Ethernet Optical Network Internet High Speed Internet Next Generation Internet On the Net. Focus 2001

Optical Network 발전단계 1 st Gen : 광전송망 (Optical Transmission Network) Optical Pt. P static path 2 nd Gen : 광전달망 (Optical Transport Network) Optical Circuit Switching with dynamic path set-up 3 rd Gen : 광인터넷 (Optical Bearer Network) Optical Packet Switching On the Net. Focus 2001

광 네트워크 기술 On the Net. Focus 2001

Protocol Reference Model Plane Management Layer Management Control Plane User Plane Client Signals Electro-optical Interface IP ATM Gigabit Ethernet Others Signaling Packet Adaptation Sublayer Electro-optical Sublayer Optical Channelization G. 872 Optical Multiplexing Optical Transmission On the Net. Focus 2001

디지털 다중화 디지털 전송방식 동선케이블에의한 PCM통신방식 광섬유케이블에의한 광통신방식 마이크로웨이브에의한 디지틀마이크로웨이브방식 디지틀 다중화 전송계위 PDH(Plesiochronous Digital Hierarchy) SDH(Synchronous Digital Hierarchy) 디지털 다중화 전송계위 PDH(Plesiochronous Digital Hierarchy) - NAS, CEPT SDH(Synchronous Digital Hierarchy) - SONET, SDH On the Net. Focus 2001

디지털 다중화 SDH/SONET의 전송 속도 · STM-n 신호 = STS-3 n 과 동일 On the Net. Focus 2001

Optical Network Data-Plane Protocol IP PPP HDLC SDL Gigabit Ethernet Robust POS Mapping SONET/SDH AAL 5 ATM Mapping ATM Vision Cell PL Robust POW Fiber/WDM SDL : Simplified Data Link (Lucent Tech. ) On the Net. Focus 2001

스위칭 기술 비교 On the Net. Focus 2001

WDM 광 전송 On the Net. Focus 2001

What is WDM? l 1 l 2 ln Fiber (l = Wavelength) Combining several wavelengths (channels) on a single fiber State of the art is about 100 channels of 2. 5 Gbps each Closer wavelength spacings and widening of usable spectrum will bring continued improvements On the Net. Focus 2001

WDM System Benefits Lower equipment cost Lower operating cost Increased fiber capacity Shorter turn-up time 4 amplifiers, 1 fiber pair 72 regenerators, 8 fiber pairs 1 1 2 2 3 3 3 4 4 5 5 6 6 6 7 7 1 1 2 2 3 8 87 60 Km 120 Km 6 7 7 8 8 N 600 Km On the Net. Focus 2001 600 Km N

Integration of IP/ATM/SDH/WDM IP over A/S/W Layer Characteristics Interoperability Optimized data transport Unified format allowing single network for all services Guaranteed Qo. S Bandwidth management High-reliability transport Circuit bandwidth management IP over S/W IP ATM SDH Efficient high-bandwidth transport Independence of bitrate & format Arrangement of optical capacity On the Net. Focus 2001 WDM IP over WDM

Optical Internet Evolution IP IP POS/POL MPLS Point-to-point WDM optical Layer (virtual fiber) Phase I Issues - Information Transfer - Connectivity Circuit-switched WDM Optical Layer (connection-oriented) Phase II Issues - OADM/OXC - RWA - Call control On the Net. Focus 2001 IP Packet-switched WDM optical layer (connection-less) Phase III Issues - Fast optical switching

1 st generation optical network IP WDM/Point-to-Point Transport Sonet SDH IP Sonet SDH DWDM Voice, low-speed data services Sonet SDH OC-n High speed data services Packet over SONET On the Net. Focus 2001 High speed data services

2 nd generation optical network Wavelength Routed Network : Fixed routing LINK - SINGLE FIBER - FIBER BUNDLE User-Network Interface n ON-USER m Wavelength Routing Node Wavelength Router Frequency Selective Switch Wavelength Changers. . . On the Net. Focus 2001

2 nd generation Multihop optical network Logical Link : Light. Path Logical network design Static topology Optimal topology Embedding in optical layer IP Router Logical Layer Optical Layer Fibers Wavelength Router On the Net. Focus 2001

2 nd generation Router Data network view Optical Network Router Switch Router SONET NE Switch SONET NE WDM Router WDM Switch Optical Network Physical Layer view Switch On the Net. Focus 2001

3 rd generation optical network Intelligent optical network : Dynamic routing Dynamically set up lightpath between end users Dynamic Routing protocol Signaling protocol Network Engineering Load Balancing Minimize Blocking Probability Dynamic Restoration Rerouting alternative path On the Net. Focus 2001

4 rd generation optical network Optical Burst Switching Optical Burst Router data burst Control Packet control channel On the Net. Focus 2001

4 rd generation Optical Label Switching al te rn at e path en gt h alter Signal Source av el nate Optical-label switching IP/WDM Node w DATA Optic a HEA l DER t th preferred pa On the Net. Focus 2001 Signal Destination

4 rd generation Optical Packet Switching Optical Packet Router Signal Source IP pa cket I P HEA DER t Routing table look up xt hop preferred ne rt - a output po - a lambda On the Net. Focus 2001 Signal Destination

광 전송장비 현황 On the Net. Focus 2001

한국 광전송장비 시장 현황 출처 : Dataquest 구분연도 (단위 : 백만 달러) 1996 1997 1998 1999 2000 2001 2002 2003 2004 CAGR 2000 -2004 PDH Line Systems 53. 5 39. 0 16. 1 1. 7 0. 4 0. 2 0. 0 -100 SDH Mux Terminals 68. 9 102. 8 80. 6 77. 0 72. 0 68. 3 67. 0 64. 8 63. 9 -2. 9 0. 0 0. 0 - 59. 2 107. 6 84. 9 104. 4 105. 9 111. 5 123. 8 131. 4 133. 8 0. 0 0. 0 PDH Muxes 54. 7 29. 6 11. 4 0. 5 0. 1 0. 0 -100. 0 Digital Cross-Connects 52. 5 71. 7 57. 5 60. 8 43. 3 33. 4 26. 9 20. 4 13. 0 -26. 0 0. 0 61. 7 91. 5 105. 8 121. 6 138. 9 152. 7 13. 7 46. 2 59. 6 45. 1 52. 8 53. 2 52. 9 50. 3 36. 5 36. 4 -9. 0 합계 334. 9 410. 4 295. 7 358. 9 366. 4 372. 1 389. 6 392. 0 399. 8 2. 2 성장률 59. 1 22. 6 -28. 0 21. 4 2. 1 1. 6 4. 7 0. 6 2. 0 SONET Mux Terminals SDH ADMs SONET ADMs DWDM 기타 On the Net. Focus 2001 6. 0 - -