Ethernet in the First Mile
http://grouper.ieee.org/groups/802/3/efm/ 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 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..
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)
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 www.lightreading.com
Point-to-point Point-to-multipoint
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
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
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
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
Downstream OLT 2 1 2 3 2 1 2 3 2 1 2 3 2 1 2 User User IEEE 802.3 frame Header Payload FCS 2 1 2 3 3 User 10km Upstream 1 User OLT 1 1 2 2 33 3 2 2 2 2 User S time slot IEEE 802.3 frame 3 3 3 33 3 User Need Dynamic Allocation TDMA based on Request/Permit
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
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 802.3 EFM SG 2001. 1, Kick off meeting / Giga Data FSAN : Full Service Access Network
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
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:15-30 15 1 20 20 PON with passive splitter(16 or 32 splitter) 1-fiber Digital service Video 1260 1360 1480 1500 1539 1550 1560 1565nm 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
sub-tracks Sub tracks EPON Copper P2P emulation/shared media link (motion pass) MPCP & convergence
sub-tracks
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
Motions at Jan. 2002 meeting
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