wdm-based hybrid pon - hsnold.hsn.or.kr/workshop/hsn2006/document/2.23.thu/6-1.pdf ·...
TRANSCRIPT
ETRI/BcN/광통신센터 1
차세대 서비스를 위한광대역 액세스망 기술
2006. 2. 23
광통신연구센터ETRI
ETRI/BcN/광통신센터 2
Outlines
1. NGN Services and Requirements
2. Broadband Access Technologies- xDSL/HFC- Optical Fiber
3. FTTx Technologies- AON/TDM-PON
- WDM-PON/WE-PON
- Comparisons of access technologies
- Convergent Access with Hybrid-PON
4. Concluding Remarks
ETRI/BcN/광통신센터 3
NGN Services and Requirements
ETRI/BcN/광통신센터 4
Wind of changes
□ Change in the market
전화/인터넷 서비스 시장의 포화
새로운 시장 개척의 필요성 (통방, 유무선 번들 서비스)
시장 경쟁 가속화-전화, TV, 위성 사업자
□ Change in user’s life style
PC 사용의 생활화 멀티미디어 서비스에 친숙
인터넷의 확산 네트워크에 친숙
- 홈페이지, E-mail, 정보검색, 네트워크 게임 등의 활성화
□ Change in demands
Always on, always available information on-demand
빠른 데이터 액세스 요구
Data, Voice 및 Video의 통합
ETRI/BcN/광통신센터 5
NGN services
Unified interface for contents in all formatsTerrestrial broadcast, Satellite broadcast, Pay-TV/Pay-per-View
Video-on-Demand offerIP TV
High Qualiy VoD licensing agreements from major film studios
20th Century Fox, Universal Studios, DreamWorks
VideoTelephony on TV
Digital TV quality Simple access and use
Virtual VCROn-line 3D/VR GameVideo Conference, EoD
ETRI/BcN/광통신센터 6
Broadband Access Network requirements
□ Target services with Broadband Access Network
Video phone (multimedia communication), VoIP:
service quality guarantee
ICoD (IP-TV, EoD, VoD, etc) service:
bandwidth as well as service quality guarantee
□ Broadband Access Network functions in general
QoS per flow/service/path, OAM & protection, IPv6, Multicasting
Terminal AggregationSwitch
AggregationDevice
ServiceEdge
Metro Switch Edge Core
Resource Reservation• Edge-to-Edge
QoS• Flow, path, class
OAM• Link, MPLS
Link protectionStatistics
• Per link, LSP pathScheduler
• Class • Connection/Session
Resource Reservation• Per hop or end-to-end
QoS• Flow, path, class
OAM• Link, VLAN or MPLS
Link protection• VLAN/MPLS protection
Statistics• Per Service/link, VLAN/LSP path
Scheduler• Class
FTTH access network
ETRI/BcN/광통신센터 7
Bandwidth for NGN services to the home
Services Bandwidth (Mb/s)
Three DTV MPEG Video Stream(VDD) 15
Telecommuting/VPN 2Video Conferencing 1
Web Surfing 1.5High Definition Interactive Game 19.2
High Definition TV 19.2Two Phone Conversations 0.128
Total bandwidth > 58
□ Bandwidth requirements ADSL/VDSL
HFC< 50Mbps
Fiber solution> 100 Mbps
Needs more bandwidth
ETRI/BcN/광통신센터 8
Broadband Access Technologies
ETRI/BcN/광통신센터 9
Broadband Access Technologies
전송장치
MDFFDF
동도 통신구 중구경관로 인공
수공
관로
광케이블
동선케이블
ONU
증폭및분배기동축케이블
케이블모뎀
증폭및분배기
광접속함체
광중간절체함
ONU
FTTC용ONU
Optical Splitter
ONU
WLL
HFC
FTTx
xDSL
주거용건물
STB
광케이블
주거용건물
공동주택
공동주택
업무용건물
인공
전화국
NIU
NIU
ONU
동축케이블
ETRI/BcN/광통신센터 10
□ xDSL 특징
가입자수에 관계없이 Dedicated Bandwidth와 Security 확보
비대칭/대칭형의 다양한 기술에 의해 서비스 수요에 대처
기존의 POTS 서비스 동시 사용 가능
서비스 거리가 길어짐에 따라 따라 전송속도 저하
□ xDSL 기술 비교
xDSL 기술
IDSLISDN DSL
SDSLSym m etric DSL
ADSLAsym m etric DSL
H D SL4-wire H igh-Bit-Rate DSL
H DSL22-wire H igh-Bit-Rate DSL
VDSLVery-H igh-Bit-Rate DSL
144KSym m etric
~2M bpsSym m etric
Full Rate : 8M /1MG .lite : 1.5M /640K
1.5M ~ 2MSym m etric
1.5M ~ 2MSym m etric
52M /6.4M34M or 6.5M Sym m etric
5.5K m
6K m
5.5K m
4.6K m
4.6K m
0.3K m0.3 or 1.5K m
음성 전화와함 께 사용
음성 전화와함 께 사용
ISDN
비 표 준
4선식
2선식
인터넷초고속 접 속
중소규모기업용
인터넷고속 접속
기업용 W AN
기업용 W AN
비디오 및 인터넷 접 속
DSL 기 술 최 고 전송속도하향 /상향
도 달 거 리 특 징 적 용 분 야
26M
ETRI/BcN/광통신센터 11
xDSL 현황
□ ADSL2/ADSL2+, VDSL2/VDSL2+ 출현으로 20 ~ 100Mbps 가능
□ xDSL 구축 현황
KT, 하나로텔레콤 등은 아파트 지역을 중심으로 50M 급 VDSL2 구축 중
하나로텔레콤은 100M급 VDSL2+ 시범사업 추진 예정
유럽 및 미국은 주로 ADSL2+ (20Mbps 급) 도입 중
일본은 공동주택 지역을 중심으로 VDSL2/VDSL2+ 도입 중
□ xDSL 의 핵심 칩 기술은 주로 IKANOS, 메타링크, 인피니언 등의 제외국 업체에 의존
□ VDSL2 칩은 국산화 성공하였으나 현재까지 상용화 실적 부재
□ Copper 기반의 DSL 은 대역폭이 거리에 매우 의존적
NGN의 궁극적인 솔류션은 아님
NGN 서비스 초기에 활용 가치가 높음
ETRI/BcN/광통신센터 12
CMTS:Cable Modem Termination SystemONU: Optical Network Unit
HFC 망구성
단독주택 가입자
TAP-OFF 라우터 CMTS
케이블모뎀
증폭기(능동)
하나로통신/종합유선 방송국(SO)
백본망
케이블라우터
케이블모뎀
아파트 가입자
광케이블분배망
공동주택 가입자
ONU
홈랜
광 144~288 Core 광 10 Core
분배기(수동)
1 Cell
500-2000 homes
125-500 homes
ONU
ETRI/BcN/광통신센터 13
HFC 기술특징 및 현황
□ 특징
광케이블 다음으로 높은 대역폭, Cell Division 및 채널 할당이 유연, 용이
증폭기의 사용으로 전송거리 확장 가능
Tree and Branch 구조 전송 속도 및 품질이 제한됨
대역폭 공유로 인해 보안이 취약
□ 현황
HFC 기술은 현재 DOCSIS 2.0 제품(하향 40M, 상향 30M)이 상용화되어 있으
며, 최근 고속의 데이터 전송(하향 160M, 상향 120M)이 가능한 DOCSIS 3.0 규
격 정립되어 2006년부터 상용 제품 출시 예상
케이블모뎀의 핵심칩은 해외 업체에 의존, 해외 업체의 가격 파괴 전략에 고전,
CMTS는 시스코가 국내시장의 90% 이상 독점, 국산 제품이 전무한 실정임
ETRI/BcN/광통신센터 14
□ 광가입자망 (FTTx: Fiber To The x)은 가입자망의 완전 광케이블(FTTH)
을 목표로 단계적이고 부분적인 광케이블화 진행
□ 광케이블의 가입자 까지의 접근도에 따라 다양한 솔루션 가능
FTTB (Fiber To The Building)
가입자의 건물(대형 상업 건물 등)까지 광케이블 포설
COT @ 전화국 + RT @ 가입자 건물
FTTC (Fiber To The Curb/Cab)
인구 밀집주거지역 까지 광케이블 포설
아파트단지 등, 댁내까지 동선거리 0.5 ~1.5Km 이내
OLT @ 전화국 + ONU @ Curb
FTTH (Fiber to the Home)
가입자 댁내까지 광 케이블로 포설
OLT @ 전화국 + ONT @ 가입자 댁 내
Optical Fiber
ETRI/BcN/광통신센터 15
Optical Fiber provides
Unlimited Bandwidth
Higher quality & long reach
Higher robustness
Optical Fiber solution
□ 광대역 인터넷 구현
□ 새로운 서비스 시장 창출
□ 유지보수 문제 경감
□ 대역폭 scalability
ETRI/BcN/광통신센터 16
Fiber Solutions for NGN Services
주거형태[공동 : 단독 (%)]
국 가
미 국
한 국
일 본
11 : 70
59 : 37
38 : 59
PSTN/ISDN
ADSL
HFC doc.1.0/2.0
VDSL
아파트 LAN
FTTH based on PON
30Mbps
(2006)
100Mbps(2008)
수백 meter 수십 km
[자료] IITA
ETRI/BcN/광통신센터 17
FTTx Technologies
ETRI/BcN/광통신센터 18
FTTx access network : x = C/B/H/P
단독주택 [밀집형]
단독주택 [분산형]
공동주택, 기업형
통신실
환경- 통신실 설치 용이- 근거리위치(~1K m)적용기술 (FTTB, FTTH)- AON
Fiber+Switch+Fiber or UTP (광랜)Fiber+Splitter+ONU+VDSL2HFC(DOCIS3.0)
- PONFiber+Spliter : TDM-PONFiber+AWG : WDM-PONFiber+AWG+Splitter : WE-PON
환경- Curb에 통신실 설치- 비교적 근거리에 위치 (~1.5Km)적용기술 (FTTC, FTTH)- AON
Fiber+Switch+Fiber or UTP Fiber+Splitter+ONU+VDSL2HFC(DOCIS3.0)
- PONFiber+Splitter : TDM-PONFiber+AWG : WDM-PONFiber+AWG+Splitter : WE-PON
환경- 통신실 설치 어려움- 원거리에 위치(~10Km)적용기술 (FTTH)- PON
Fiber+Splitter : TDM-PONFiber+AWG : WDM-PONFiber+AWG+Splitter : WE-PON
CO
ETRI/BcN/광통신센터 19
Active Optical Network (AON)
MDF@BuildingCO
Type Wavelength Transmitter Medium Distance1310nm LED MMF, UD 2km1310nm FP-LD SMF, UD 5km
100BASE-SX 850nm VSCEL MMF, UD 0.26km, 0.55km1000BASE-LX 1310nm FP-LD MMF, UD 0.55km,
1310nm FP-LD SMF, UD 5kmTS1000(100Mb/s) 1310nm(user),1530nm(co) FP-LDs SMF, BD 7.5km100BASE-LX10 1310nm FP-LD SMF, UD 10km100BASE-BX10 1310nm(user), 1530nm(co) FP-LDs SMF, BD 10km1000BASE-LX10 1310nm FP-LD MMF, UD 0.55km
1310nm FP-LD SMF, UD 10km1000BASE-BX10 1310nm(user), 1490nm(co) FP-LD, SM-LD SMF, BD 10km
100BASE-FX
IEEE
802.
3ah
Japan
MMF: multi-mode fiber, SMF: single-mode fiber, UD: unidirectional, BD: bidirectional
GE
ETRI/BcN/광통신센터 20
TDMA-PON (Passive Optical Network) : A/B/E/GPON
OLT
…
time
time
time
Power splitter
ONU
Operator building
TDMA(Time-division
multiple access)
• Burst-Mode Receiver• DBA (Dynamic bandwidth allocation)
…
Typical specs: 155M~1.25Gbps total bandwidth, 10~20 km reach, 16~64 splitStandards: BPON (ITU-T G.983.x), GPON (ITU-T G.984.x), and EPON (IEEE 802.3ah)
time
Home
ETRI/BcN/광통신센터 21
WDM-PON
OLT
Different wavelength(s) assigned to each of users (or each of services)Unshared accessLong reach and/or high bandwidth
…
time
ONU
time
Wavelength MUX/DMX
WDM(Wavelength-division
multiplex)
time
time timeλ
λn
λ2
λ1
..
λ
λ
λ
ETRI/BcN/광통신센터 22
PON Evolution
1995Today ▶
□ EPON = Ethernet-based PONs□ Emerging market, especially for Metro
Ethernet (Japan)□ Efficiency (for voice and data) ~ 49%□ 1Gbps bandwidth□ IEEE acceptance in 2004
□ GPON = Gigabit PON□ Emerging market (USA)□ Led by FSAN Committee for Voice and
Data in their native format□ 2.5Gbps bandwidth with 93% Efficiency□ Adopted as ITU standard in 2004
□ WE-PON = EPON over WDM-PON□ Led by Korea□ WE-PON product is under test□ An early WDM-PON product
tested and installed by KT□ 100Mbps~1Gbps
□ ATM-based PONs□ Early BPON products tested and
installed in limited quantities by carriers
□ Supports Voice and Data□ 622 Mbps bandwidth with ~ 70%
Efficiency (?)□ Adopted as ITU standard in 1999
A/BPONG.983
EPON802.3ah
GPONG.984
WE-PON WDM-PON
ETRI/BcN/광통신센터 23
EPON 핵심기술
□ TDMA Protocol: Multi-Point Control Protocol (IEEE802.3 clause 64)
□ EPON Logical Link (IEEE802.3 clause 65)
□ EPON PMD : 1000BASE-PX10, 1000BASE-PX20 (IEEE802.3 clause 60)
□ Link OAM (IEEE802.3 clause 57)
□ Link Security : IEEE802.1ae (MACsec), IEEE802.1af (key management)
ETRI/BcN/광통신센터 24
▶ Downstream
▶ Upstream
: Ethernet Frame (64~1522octets) + EPON preamble(8 octets): idle patterns in Interframe Gap (> 12 octets)
Burst frames from ONU #j
Guard Time
1.25Gb/s
1.25Gb/s
(Bit, time-stamp synchronization are required)
Burst frames from ONU #i
EPON Frame Formats
Frame Formats
ETRI/BcN/광통신센터 25
Item(reference BER = 10-12)
Downstream1.25Gb/s
Upstream1.25Gb/s
ODN 10km 20km 10km 20kmChannel Loss 5-19.5 dB 10-23.5 dB 5-20 dB 10-24 dBReceiver SensitivityAverage Received Power(Max)Receiver Settling Time(Max)CDR Lock Time(Max)Code Group Alignment Time(Max)
-24dBm-3dBm
N.A.N.A.
-24dBm -24dBm -27dBm-3dBm -1dBm -6dBm
400 ns32 ns
400 ns
Valid FrameValid Frame
Ethernetpreamble
Turn-onTime
Turn-offTime
< 15dB
ReceiverSettling Time
CDRLock Time
Guard Time
EPON OTRx
ETRI/BcN/광통신센터 26
GPON 주요 특징
□ 다양한 상하향 속도 지원 : 1.2Gbps/2.4Gbps, 대칭/비대칭
□ ATM 및 가변길이 패킷(Ethernet, IP packet) 동시 지원
□ 8KHz 동기 전달, TDM 수용 용이
□ 상향 DBA 특징
8KHz로 주기적인 상향 채널 접근 허용
프레임 fragmentation 허용
□ OTRx 특징
100 nsec 이하의 guard time : 대역폭 효율성 제고
OLT burst 수신기 reset 기능
ONT 송신 출력 제어 기능
ETRI/BcN/광통신센터 27
Comparison among TDMA-PON Types
EPONDescription
Cost
QoS
다단분기
상/하향 전송속도
Layer 2 Protocol
Multiple Access
Video OverlayStandardization
Low
Bad
가능
1.2 Gbps
Ethernet
TDMA
가능
IEEE802.3ah
G-PON
Middle
Good
가능
1.2 or 2.4 Gbps
Native (ATM,Ethernet, TDM)
TDMA
가능
G.984
TDM service supportMax. reach today 20Km 37.5Km
Service Ethernet Ethernet, POTS, DS1/2, ATM
Full native and flexibilityLimited
ETRI/BcN/광통신센터 28
COλ
AWG
WDM-PON
WDM-PON
□ Very high bandwidth (100Mbps ~ 1Gbps)
□ Protocol transparency (Ethernet, ATM etc)
□ High security (Point to Point)
□ High link budget
□ High cost ⇒ need to develop low-cost light sources
ETRI/BcN/광통신센터 29
Wavelength Options
Original BandExtended Band Short Band Conventional
Band Long Band
O-band E-band S-band C-band L-band
1260 1360 1460 1530 1565 1625 nm
□ CWDM (20 nm spacing)
□ WWDM (4-5 nm spacing)
□ DWDM (1.6/0.8 nm spacing)
□ UDWDM (less than 0.4 nm spacing)
ETRI/BcN/광통신센터 30
Transmitter Options
□ Commercial Light SourcesDFB-LD (Distributed Feed Back Laser Diode)
good modulation, high costVCSEL
low cost, single mode, good modulationon-going development for 1550 nm
□OthersSpectrum-Sliced ASE Source
expensive external modulator neededInjection Locked FP-LD using Broadband Light SourceExternal Cavity LaserRSOA
ETRI/BcN/광통신센터 31
Issues in WDM-PON
□Avoid Inventory ProblemColor-free by wavelength tunable source
Colorless by wavelength-independent source
□Reduce Optical CostToward Passive Alignment Packaging
Down to the range not far away from $[VDSL]
□Reliable against Temperature ChangesONT light sources
Athermal AWG at RN
ETRI/BcN/광통신센터 32
WDM-PON Link Types
C-band BLS
L-band BLS
R-LD
PD
filter R-LD
PDPD
filter
subscribers
Central Office
Central Office
DFB-LD
DFB-LD
DFB-LD
DFB-LD1310 nm band
1550 nm band
R-SOA
PD
R-SOAPD
filter
Central Office
DFB-LD
PD
RSOAPD
PLC-ECL
PD
filter PLC-ECL
PDPD
filter
subscribersCentral Office
CW-RSOA Wavelength-reuse RSOA
Injection-locking Tunable PLC-ECL
filter
subscribers
R-PON: Reflective PON
subscribers
T-PON: Tunable PON
ETRI/BcN/광통신센터 33
R-LD (Reflective LD)
Straight SSC waveguide
Far-field angle: 15 deg
WBG (Waveguide Bragg Grating)
WBG by phase-mask
WBG material: Low Visco-Elastic, high index Δ Polymer
Tunable Bragg grating
optical tap(90:10)
mPD
R-LD spot-sizeconverter
V-groove
Wavelength-Tunable PLC-ECL
ETRI/BcN/광통신센터 34
Specifications
Output power > -3 dBm
1.25 Gbps direct-modulation
26nm tunable (32channel, 100GHz spacing)
Operating Temperature: 0 ~ 40 oC
Low-cost butterfly package
PLC-ECL Sample (2005. 12)
ETRI/BcN/광통신센터 35
Tunable WGB of PLC-ECL
ETRI/BcN/광통신센터 36
26 nm tuning
PLC-ECL Wavelength Tuning
ETRI/BcN/광통신센터 37
CO
SMLPD
RSOAPD
Amplitude Squeezing
0 1 0 1 0
Saturation point INPUT POWER
OU
PUT
POW
ER
Down stream
Saturated Down stream
Modulated Up stream
RSOA module
RSOA: Reflective Semiconductor Amplifier
USER
Wavelength-reuse RSOA
ETRI/BcN/광통신센터 38
Specifications
1.25 Gbps direct modulation
SSC-RSOA
far-field angle < 25 deg
to improve fiber-coupling efficiency
Optical tap coupler
Monitoring output power
Receiving downstream signal
Data PD
RSOA Monitor PD
Up/Down Signal
TRx with Wavelength-reuse RSOA
ETRI/BcN/광통신센터 39
OLT output pattern: ER ≈ 8.2dB RSOA output pattern (saturation only)
RSOA output pattern (FFC)
Control Current
Upstream Modulation
SSCOutput
Input
Section 1 Section 2
□ FFCI into Two-Section RSOA
Improvement in Wavelength-reuse RSOA
ETRI/BcN/광통신센터 40
□ Service
A few tens Mbps BW would be OK for the present services
1Gbps BW with W-PON is too much
□ Cost
WPON is still too expensive for general users
VDSL : E-PON : W-PON = $100 : $200 : $500
□ WDM-PON is not cost-competitive yet with other types
Symmetric 100Mbps VDSL starts to be deployed in 2006
Optical LAN (AON) deployment has been on a rapid increase
□ WDM based hybrid PONs can be good candidates
as cost-effective solutions for providing 100Mbps/user with higher
multiplexing density
WDM-PON Market Status
ETRI/BcN/광통신센터 41
▶ WDM MUX/DeMUX + Optical Power Splitter▶ TDM over WDM▶ FDM (SCM) over WDM
λ1 · · · λN
λ1
λ2
λN
CO
f1f2
fm
t1t2
tk
WDM based Hybrid Network
WDM
FDM over WDM
TDM over WDM
ETRI/BcN/광통신센터 42
WDM/SCMTRx 1
ONT 11
WDM/SCMTRx N
ONT 1K1λ
Nλ ONT N1
ONT NK
1λ
Nλ
1λ1f Kf…
1f
□ Key issues
High quality optical source
Broadband tunable RF up/down-converter
to eliminate RF inventory problem @ ONT
Optical Beat Interference (OBI)
Kf
1f
Kf
…
1λ
Nλ
…
SCM over WDM
ETRI/BcN/광통신센터 43
□ 16 wavelengths are multiplexed into a fiber (WDM)
□ Each wavelength is shared by multiple users on different times (TDMA)
AWG is followed by Splitter to user’s side
□ Flexible configuration is possible by varying split numbers of splitters
32 split (Apartment users), 16 split (SOHO), without split (Enterprise)
LD
ONU
LD
ONU1λ
Nλ ONU
ONU
TS1
TS 32TS 1…
TS 1 …
TS1
TS 32
TS 32TS 1
TS 32TS 1
1λ
Nλ
…
…
TS: Time Slot
1λ
Nλ
WDMWDM
TS 32
TS 32
splitter
splitter
10 ~ 40 km
CO
WDM TDMA
WE-PON WDM-Ethernet-PON
ETRI/BcN/광통신센터 44
WE-PON based on wavelength-reuse RSOA
16 channel WDM, 16 split E-PON (G-PON) per wavelength
Double split Star structure: first at AWG, second at splitter
Available in 2006 (Optical Link by ETRI, System by industries)
WE-PON based on wavelength-tunable PLC-ECL
16 channel WDM, 32 split E-PON (G-PON) per wavelength
Double split Ring structure: first at OADM, second at splitter
Available in 2006 (Optical Link by ETRI, System by industries)
ETRI WE-PON Solutions
Central Office
LD
PD
RSOAPD
WE-PON with RSOA
subscriberssplitter
WE-PON with PLC-ECL
LD
PDPLC-ECL
PDPD
subscribersCentral Office
splitterAWG AWG
ETRI/BcN/광통신센터 45
WE-PON Target Networks - FTTC
OADM
MDF
ONU
북대전전화국
Splitter
λ1
1 동
16 동2 동
WE-PON16:16 wavelength WDM x 16 TDMA (E-PON/G-PON) x 24 FE ports = 6144 users on a fiber
엑스포아파트
λ2 OADM
MDF
ONU
Splitter
λ3
1 동
16 동2 동
청구아파트
OADM
MDFSplitter
λ16
16 동2 동
한울아파트
λ15λ14
λ13
ONU
32 동
UTP
Optical Fiber
ONU
1 동
UTP
ETRI/BcN/광통신센터 46
WE-PON Target Networks - FTTH
전화국
WE-PON32: 512 FTTH users on a fiber
아파트 가입자
λ1
AWG
AWG
AWG
λ2λ16
32분기Splitter
WE-PON8: 128 FTTH users on a fiber
λ1λ2 λ16
λ1λ2
λ16
WE-PON16: 256 FTTH users on a fiber
16분기Splitter
8분기Splitter
단독주택 가입자기업 가입자
□ FTTH with Double Star Topology
16 ~ 32 split (general users)4 ~ 8 split (SOHO)Without split (enterprise)
ETRI/BcN/광통신센터 47
□ Business Network with Ring
Wireless (DMB, WiBro)Wired (CATV, FTTH)Dedicated networks
WE-PON Target Networks – Business Ring
ETRI/BcN/광통신센터 48
Mobile IP
...
FMC-PON
Splitter
HPi-AP
HA
FA
A/D
AP
WiBro Transport Network
AAA
W-LAN AP
W-LAN AT
Inter AP H/O Inter OLT H/O
PuBlic IP Network
Router
FMC-PON
...
Splitter
학교/Business
ONU HDTV-STB IP-STB
PC HDTV
주택/아파트
ONT
ONU ...
AP
...
A/D
Mux /Demux
FMC-PON
AP
AP
AT
RI
AT
...
Splitter
Splitter
AT
RI
HDTV-STB IP-STB
PC HDTV
ONT
ONU
학교/Business 주택/아파트
...
WE-PON Target Networks - Convergent Access
School/business School/business House/ApartmentHouse/Apartment
ETRI/BcN/광통신센터 49
E-PONMin 31Mbps32 ch/Fiber135 $/E77 $/O
212 $/Total6.8 $/Mb
ETRI WPON1Gbps32 ch/Fiber154 $/E350 $/O504 $/Total0.5 $/Mb
WE-PON16Min 62Mbps256 ch/Fiber147 $/E157 $/O304 $/Total4.86 $/Mb
WE-PON32Min 31Mbps512 ch/Fiber137 $/E135 $/O272 $/Total6.8 $/Mb
US$ per MbpsUS$ per channel
100
200
300
400
500
600
8
6
4
2
Electrical Cost per ch (E)
Optical Cost per ch (O)
Total Cost per ch (Total)
Total Cost per Mbps (Mb)
Deployment cost (based on 1000 channel deployment)
Equipment Cost
ETRI/BcN/광통신센터 50
OSP cost takes 50% of the total cost, OSP costs for feeder and trunk take 50% of the total OSP costOSP cost for fiber distribution is assumed to be equal to the types with BiDi structureOOP cost is assumed to be the same as the equipment cost for EPON
US$
per
cha
nnel
200
300
400
500
600
700Equipment Cost (S)
OSP Cost (O)
Total Cost (Total)
800
100
Total Cost (Equipment + OSP)
E-PONMin 31Mbps32 ch/Fiber212 $/S212 $/O424 $/Total
ETRI WPON1Gbps32 ch/Fiber504 $/S212 $/O716 $/Total
WE-PON16Min 62Mbps256 ch/Fiber304 $/S119 $/O423 $/Total
WE-PON32Min 31Mbps512 ch/Fiber272 $/S109 $/O381 $/Total
ETRI/BcN/광통신센터 51
AON TDMA-PON WDM-PON WE-PON
Real time video Χ ◎ ◎ ◎
streaming video ◎ ◎ ◎ ◎
Security Χ △ ◎ ◎
BW Expendability ◎ ◎ ◎ ◎
OAM Convenience Χ ◎ ◎ ◎
Cost ◎ ◎ △ ◎
◎ : good, △ : medium, Χ : not enough
□ WE-PON may be most practical, suitable for current broadband services.
Summary
ETRI/BcN/광통신센터 52
Concluding Remarks
■ Broadband applications will continue to increaseDemands for broadband services over 100 Mbps rises in a few years
■ We definitely need something better than DSL shortlyReliable full bundle services have been shown alreadyFull-digitally convergence services (Full Digitalized Home) availableDSL would not be able to provide them economically
■ WDM based Hybrid PONs can be good candidates Bandwidths around 100Mbps seem OK for the time beingCan cost-effectively provide 100Mbps/user with higher multiplexing density