Technologies and applications Technologies and applications of - - PowerPoint PPT Presentation

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6

I nternational Telecom m unication Union

ITU-T

Technologies and applications Technologies and applications

• f Passive Optical Networks
• f Passive Optical Networks

(PON) (PON)

Yukio Nakano

Hitachi

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 2

ITU-T

FTTH Penetration in Japan

B-PON introduction

• Sept. 2002

June

1M 2M 3M 4M 5M Number of FTTH users

Dec June Dec June Dec June Dec

Source: Ministry of Internal Affairs and Communication, Japan

2002 2003 2004 2005

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 3

ITU-T

CO ONU Core Network 1310nm 1490nm Optical splitter (passive) Bi-directional transmission

• ver one fiber using WDM

PON Technologies

OLT ONU ONU Upstream packet multiplexing

• n fiber without collision

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 4

ITU-T

PON Advantages

• Very high speed data up to 1 Gbit/ s to

home and businesses

• Maintenance cost reduction due to no

electronics between CO and customers

• Low cost due to fiber and CO interface

shared by several customers

• Constant data rate regardless of reach
• Multiple applications including data (IP),

video and voice (triple play)

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 5

ITU-T

Broadband I nternet application

• FTTH in Japan started from simple application of

IP/ Ethernet and it is still dominant

• Simple indoor ONU enabling economical Broadband

access of 100 Mbit/ s best effort service

• The service is like simple extension of ADS

L ONU OLT

CO

Internet Internet Internet

Home

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 6

ITU-T

Downstream Data + RF video

Central Office

Upstream Data OLT ONT

Home or Business Voice RF video Data

Voice Network Voice Voice Network Network RF Video RF RF Video Video Data Network Data Data Network Network

Triple play w ith RF video

• RF overlay using WDM provides conventional

CATV type video service in addition to Broadband Internet

• Very popular in North America

WDM

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ITU-T

I P triple play application

• Home Gateways to separate IP video and

provide POTS conversion

• Entire network based on IP and Ethernet

ONU OLT

CO

Home Gateway

Voice Network Voice Voice Network Network Video Network Video Video Network Network Data Network Data Data Network Network

Home

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 8

ITU-T

G-PON GE-PON B-PON Ethernet + TDM +ATM Ethernet ATM Transmission Format 1.2 Gbit/s 1 Gbit/s 150 Mbit/s Upstream data rate 2.4 Gbit/s 1 Gbit/s 600 Mbit/s Downstream data rate ITU-T G.984 IEEE 802.3ah ITU-T G.983 Standard (Note) Rates of common practice.

PON Com parison

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ITU-T

W hy GPON now ?

• S

tandardized by telecom operators and telecom vendors in ITU-T

• Various operation and management capability

inherited from conventional proved telecom technologies

• Future-proof bandwidth
• 2.4 G / 64 users = 35 M per user
• 35 M = 6 M (HDTV-MPEG4) x 4 ch + 10 M (Internet)
• Suitable for business users because of various

QoS and bandwidth management

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 1 0

ITU-T

GPON exam ple

Internet Internet Internet

ONU (Single Family Unit) OLT ONU (Multi Dwelling/Tenant Unit) 2.4 G 1.2 G 20 km 10G/1G 1G 100M 1 M

IPTV systems IPTV IPTV systems systems VoIP systems VoIP VoIP systems systems

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 1 1

ITU-T

Possible Future Directions

• Technology available and massive GPON

deployment soon

• IP HDTV service in near future
• More bandwidth by higher transmission

rate or WDM technology

• Longer reach by optical amplifier
• Higher splitter ratio (more users per

PON) by optical amplifier

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ITU-T

Conclusion

• B-PON initiated the first massive PON

rollout in Japan

• PON technology is suitable for triple play

services (voice, video, data)

• Future-proof G-PON technology available

and soon to be deployed massively