Overview

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경영 함
6 years ago
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1 Ethernet in the First Mile

2 Overview

Issue Support subscriber access network topologies: Point to multipoint on optical fiber(pon) Point to point on optical fiber Point to point on copper(eovdsl) Provide a family of physical layer

4 Issue Support subscriber access network topologies: Point to multipoint on optical fiber(pon) Point to point on optical fiber Point to point on copper(eovdsl) Provide a family of physical layer specifications: 1000BASE-X extended temperature range optics 1000BASE-X>=10km over single SM fiber 1000BASE-X>=10km, 1000Mbps, SM fiber, >=1:16 Support far-end OAM for subscriber access networks Remote failure indication Remote loop-back Link monitoring DomiNet system, Cisco, World Wide Packet, Alloptic, infineon, Broadcom, Passave, ADC, Samsung..

5 Size of building DSL APON 155Mbit/s (shared) GEPON 1Gbit/s (shared) Point-to-point 1/10Gbit/s Business Small Business Medium Business Large Business Now 1-2Mbit/s T1, E1 155Mbit/s 1Gbit/s Increasing Bandwidth to the Building Future Residential Now 50Mbit/s 100Mbit/s 1Gbit/s 5Gbit/s FTTH Apartments MDU Large Block Single family homes 16 homes 100 homes 500 homes 56kbit/s ISDN, ADSL 100Mbit/s 400Mbit/s 1Gbit/s Future 50Mbit/s 1Gbit/s 5Gbit/s 25Gbit/s MDU:Multiple Dwelling Units ( :OHAN/FSAN 2001,April)

6 Backbone Network Central office Terabit Switch Edge Switch MSSP Broadband Switch/router 10Gbit/s Ethernet Video IP, VoIP Remote building Optical crossconnect OC192 DWDM extensions PON OLT T1 IAD Nearby building Multiple buildings remote sites MSPP Office park or campus Copper Fiber PON OLT PON splitter

7 Point-to-point Point-to-multipoint

8 Voice IP, ATM 1xN. Brodcasting CATV, VoD OLT : 2.2km 3km : 73% 5km : 93% : : 1.2km : 3.2km : 1.7km : 2.0km Central Office : OLT Outside Distribution Network(ODN) Indoor/Outdoor

9 Internet ONT FTTH ONT FTTB Leased Line OLT Passive Optical Network Telephony NT FTTC Twisted pair Video NT FTTCab VDSL FTTH : Fiber to the Home FTTB : Fiber to The Building FTTC : Fiber to The Curb FTTCab : Fiber to The Cabinet

10 Central Office Remote node Subscribers OLT Transmitter Burst mode Receiver 1550nm, Downstream ATM 155/622Mbps 1310nm,Upstream, ATM 155Mbps 1xN Fixed 56 byte(53byte ATM cell+3byte dead zone) 1550nm 1310nm 1550nm 1310nm Receiver Burst mode Transmitter. Receiver Burst mode Transmitter

11 Central Office Remote node Subscribers OLT Transmitter Burst mode Receiver Gigabit Ethernet(1.25G) 1310nm 1xN... Variable Time slot and Variable frame size 1550nm 1550nm 1310nm Receiver Burst mode Transmitter. Receiver Burst mode Transmitter

12 Downstream OLT User User IEEE frame Header Payload FCS User 10km Upstream 1 User OLT User S time slot IEEE frame User Need Dynamic Allocation TDMA based on Request/Permit

13 Burst-mode data Optical power( ) Phase( ). PON OLT R P Power ratio between adjacent bursts Central Office OLT Transmitter Broadcasting Ethernet frames 1xN packet Idle. Frame optical power. No Idle pattern Frame phase. t g Burst 1 Burst 2 Gap time between adjacent bursts 1550nm 1310nm Subscribers Receiver Receiver Receiver

14 PON (OLT ) (OLT ) ATM-PON ATM (155 ~622Mbps) TDMA(ATM) ( 155Mbps) 1995 FSAN ITU-T 983.1, 2, 3 622Mbps WDM-PON (DWDM tech.) Flexible Ethernet-PON Ethernet frame TDMA (Ethernet frame) IEEE EFM SG , Kick off meeting / Giga Data FSAN : Full Service Access Network

15 Classes for Optical Path Loss (G.982) Class A Class B Class C Minimum loss 5dB 10dB 15dB Maximum loss 20dB 25dB 30dB Physical configuration of ODN (G.982, 983.1) R/S S/R 1 O rd, O ru. ODN OLT n O ld,o lu O rd, O ru

16 Items Fiber type Attenuation range(g.982) Differential optical path loss Max. optical path penalty Max. differential logical reach Max. fiber distance Min. supported split ratio Bi-directional transmission Unit - db db db km km - - Specification G.652 Class B:10-25,Class C: PON with passive splitter(16 or 32 splitter) 1-fiber Digital service Video nm Basic Band Enhanced Band Future Band ATM-PON Downstream Guard Band Guard Band Reserved for allocation by ITU-T λ1(1480nm) λ2(1550nm) λ3(1539,1550nm) λ4(1565,1560nm) λ5 λ6

19 sub-tracks Sub tracks EPON Copper P2P emulation/shared media link (motion pass) MPCP & convergence

20 sub-tracks

21 MUX LD Driver LD DRIVER LD PD Equalizer (or Equalizing amplifier) PRE POST AMP AMP CLOCK &DATA RECOVERY APC M-PD Peak Detector Optical Transmitter Optical Receiver

23 Motions at Jan meeting

26 Ethernet PONs Central Office Local Exchange Switch Buildings FTTB VIDEO OLT Optical splitter FTTC SONET ATM VOICE Alloptic 1.25 Gbps IP/Ethernet PON FTTH Multi-Tenant Units Homes Up to 64 s

FTTH 기술발표

FTTH 기술발표 2 3 xdsl /UTP FTTH / 2002 2005 2010 2 Mbps 6 Mbps 100Mbps * 10 Mbps 45Mbps 155Mbps FTTO / FTTD / Digital (DBS) 53Mbps/4km LMDS ADSL : Asymmetric Digital Subscriber Line HDSL : High speed Digital Subscriber