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Pune, India, 13 15 December 2010

ITU-T Kaleidoscope 2010Beyond the Internet? - Innovations for

future networks and services

Helmut Schink,

Vice Chair of SG 15

[email protected]

Trends in Transport Standards

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2Pune, India, 13 15 December 2010

ITU-T Structure

Telecommunication Standardization

Advisory Group

WTSAWorld Telecommunication

Standardization Assembly

Study Group SG

Workshops,

Seminars,

Symposia

IPR

Ad

hoc

Working Party

Questions: Develop Recommendations

SG

WP WP WP

Q

Q

Q

Q

Q

Q

FocusGroup

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Study Group 15: Overview

General area of study is on Optical transportnetworks and access network infrastructures

SG 15 is the focal point in ITU T for thedevelopment of standards on optical and othertransport network infrastructures, systems,equipment, optical fibres, and the correspondingcontrol plane technologies to enable theevolution toward intelligent transport networks.

This encompasses the development of relatedstandards for the customer premises, access,metropolitan and long haul sections ofcommunication networks.

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Optical

Access

Metallic

Access

Home / Access Long Haul

Terrestrial &

Submarine

/ Regional

Study Group 15: Overview

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5Lisbon, Portugal, 24-25 February 2010

Projects and Opportunities SG 15

Major projectsLead SG on access network transportLead SG on optical technologyLead SG on optical transport networks

New opportunitiesHome networkingEnergy managementPower savingHome and commercial building automation transceivers

New customer premises cablingInteroperability testing (e.g. with FTTH Council Europe)Packet TransportDevice Management

http://www.itu.int/ITU-T/studygroups/com15/ant/http://www.itu.int/ITU-T/studygroups/com15/otn/http://www.itu.int/ITU-T/studygroups/com15/otn/http://www.itu.int/ITU-T/studygroups/com15/otn/http://www.itu.int/ITU-T/studygroups/com15/otn/http://www.itu.int/ITU-T/studygroups/com15/otn/http://www.itu.int/ITU-T/studygroups/com15/ant/

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SG 15 Management

Chair: Yoichi Maeda, TTC

Vice-Chairs, WP Chairs:Sadegh Abbasi Shahkooh, Iran

Baker Baker, Syria

Jlio Cesar Fonseca, BrasilViktor Katok, Ukraine

Francesco Montalti, WP 2, Telecom Italia

Helmut Schink, Nokia Siemens Networks

Tom Starr, WP 1, AT&T

Steve Trowbridge, WP 3, Alcatel LucentShaohua Yu, China

Counsellor: Greg Jones

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Major front lines

Outside plant techniques for easy,

environmentally friendly installationFibres: rubustness and low water peak

Higher speed and lower power consumption inhome network

DSL copper accessFiber access

Common OAM mechanisms for MPLS

Beyond 100G long haul optics

Syncronisation e.g. for backhaul


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L. 83 Low impact minitrench installationtechniques

Installation of mini ducts structures inside a small

dimension trench: width less than 5 cm and depth in therange 20-30 cm (compared with 10x30 cm of theconventional one)

Possibility of installing up to 3 linear arrays of 5 mini ducts 10/14 mm directly buried

Use of low environmental impact trenching machines


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99 Pune, India, 13 15 December 2010

Solutions for installation of ducts and cables inan occupied infrastructures

Outfitting of existing ducts (telcos, street lighting,power..) with10/12 mm mini ducts and use ofcompletely dielectric minicables

Separation of the telecommunication access pointswith the use of reduced dimensions manholes

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10

Q7/15Work in Progress

L.distr Customer and distributionboxes and terminals

L.drop Pre-terminated fibre dropcables & hardened connectors

L.modcEnvironmental protection ofoptical devices and optical

connectivity in outside plantconditions L.oxconOutdoor optical cross

connect cabinets

Need of new Recommendation on fieldmountable connector technologies

Optimization of spaceUnbundling?


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11 Pune, India, 13 15 December 201011

ITU-T documents give guidance on how to

use the available spectrum

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Third window1500-nm

Second window1300-nm

First window850-nm

Fiber Spectrum

600

0.1

l (nm)

0.2

0.5

1.0

2.0

5.0

10

Attenuation(dB/km)

800 1000 1200 1400 1600 1800

Standard fiber

AllWave Fiber

US1310nm

DS1490nm

V1550nm

US1270nm

DS1580nm

GPON10G-PON

(D)WDM PON

Water peak

RayleighScattering

Absorption


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G. 657 Bending loss insensitive single-mode fibres

G.657 A(G.652 compliant) A1 fibre 10 mm bending radiusA2 fibre 7.5 mm bending radius

G.657 B(not G.652 compliant) B2 fibre 7.5 mm bending radiusB3 fibre 5 mm bending radius

Following issues are being addressed as the future study points:- possibility of A3 fibre- splicing to G.652 fibre (level of compliance)

- wavelength dependence of the transmission characteristics

G.652

G.657 A1

G.657 A2 / B2

G.657 B3

Specified loss in dB for 1 turn at 1550 nm for

radius:

Bending Radius 10 mm 7.5 mm 5 mm

G. 657A1

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Available Fiber Access Technologies

A) Direct Fiber (Point to Point) Reach: ~20Km Future proof architecture Protocol independent Completely passive ODN Follows established telco wiring practice High CO/LO Fiber Management cost Un-economical for countrywide FTTH

C) G-PON G.984 Reach: ~20Km Simplified Fiber management Low cost passive OSP (no PSU, MNS) Low power consumption Low OpEx Video Broadcast (DS) Bandwidth sharing in US and DS ONT must filter rogue channels Security (MBH port shared with FTTH subscriber?) Splitter attenuation limits tree size

Cabinet /Basement

D) WDM-PON Reach:~20Km Passive ODN, symmetric BW Independent Lambda per subscriber Protocol Independent Reach amplification possible Reduced OSP costs, single fiber Security per line Easy BW upgrades

Filters complicate OSP design

B) AON (Active Optical Network) Reach: up to 40Km, (typ. ~7-15Km) Easy BW upgrades Flexible user & line rate deployment Simple deployment Shared Bandwidth Requires active equipment Increases OSP costs Increased OpEx

2.5G DS / 1.25G US

10/100/1000bT 1 10G

AthermalDWDMFilter

PassiveSplitter

EthernetSwitch

Pune India 13 15 December 2010

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Other/futureFiber Access Technologies

F) 10G-PON G.987 Reach: ~60Km Passive OSP Migration from G-PON Split 1:64 / 1:128 Low power Redundancy options

10G DS / 2.5G US

Lambda per subscriber

Filter(Optional)

PassiveSplitter

PassiveSplitter

E) UD-WDM Reach: up to 100Km Passive OSP Virtual Point to Point architecture Lambda per subscriber / service Colourless design, tunable ONT High split (up to 1:1000) Any packet transport format Low latency and delay Redundancy options

G) CWDM+TDM-PON Reach: up to 60Km Strong service separation Reduced fiber count, CO consolidation possible CWDM filter in ODN


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Vectored VDSL2 enables up to 100Mb/s

Far-end crosstalk (FEXT) greatly reduces VDSL2 performance.Near-end crosstalk is not problem since VDSL2 uses differentfrequency band for upstream and downstream.

DSLAM

A vectored system sends pilot signals to learn thecrosstalk coupling between all the lines in the cable

Each transmitter precodes its signal to compensate forthe FEXT from the other primary disturbing lines, therebyoffsetting the effects of the crosstalk

In April 2010 the ITU-T approved the G.993.5 standard forVDSL2 vectoring

VDSL2 bit-rate performance is nearly doubled by cancellingthe FEXT

FEXT


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Unified Home NetworkingStandards

-G.hn supports home networking rates up to 1Gb/s

-One standard for in-home coax, twisted pair,and power wires

-Support of IPTV with Multicast and full QoS(quality of service)

-Relay-node operating enable excellent coveragethroughout the premises

-Very low complexity home networking (G.9955)being developed to support Smart Grid energymanagement


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ITU-T WP 1/15Passive Optical Network access

Recommendations in Force

G.983 BPON (622 / 155 Mbps)

G.984 GPON (2.4 / 1.2 Gbps)

G.985 point-to-point EPON (100 Mbps)

G.986 point-to-point EPON (1 Gbps)

G.987 XGPON (10 / 2.5 Gbps) SR and PMD layers

Work in progress for June 2010

G.987 XGPON (10 / 2.5 Gbps) TC layer

G.988 Generic OMCI (PON management)

Further work

G.987 XGPON2 (10 / 10 Gbps) ?

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WP3/15 - Transport Network StructureMatrix Organization and key relationships

19Pune, 15 December 2010

Q3/15 Coordination, Terminology

Lead SG activities (OTNT SWP)

Q9/15 Equipment, PerformanceNetwork Protection/Restoration

Q10/15 OAM, Services

Q11/15 InterfacesStructures & Mapping

Q12/15 Architecture

Q13/15Timing &Synchronization

Q14/15 Management &Control

Q15/15 TestEquipment

Circuit

Transport

Packet

Transport

OTN

SDH

PDH

Ethernetover

Transport

(EOT)

MPLS-TP

IEEE802

MEF

IETF

OIF

TMF

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Optical Transport Network (OTN)Evolution

OTN Heirarchy recently extended at both ends to support40/100G services per wavelength and groom at GbE(1000BASE-X) granularity

New Flexible ODU (ODUflex) supports future Constant bit-

rate (CBR) clients and arbitrarily sized packet flows

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ODUflex Two flavors of ODUflex standardized

Circuit ODUflex Supports any possible client bit rate

as a service in circuit transportnetworks

CBR clients use a bit-sync mappinginto ODUflex (239/238xthe clientrate)

Packet ODUflex

Creates variable size packet trunks(containing GFP-F mapped packetdata) for transporting packet flowsusing L1 switching of a LO ODU

In principle, can be of any size, but ina practical implementation it will bechosen to be multiples of the lowesttributary slot size in the network

Similar to VCAT (virtual concatenation), but avoids differentialdelay problem by constraining the entire ODUflex to be carriedover the same higher order ODUk, and provides onemanageable transport entity per service (while also limiting theapplication to ODUflex that fits within one higher order ODUk)

HO ODUk (l)

ODUj (not flex)

ODUflex nn FC PHY

ODUflex mN Eth PHY

TDM CBR

HO ODUk (l)

ODUj (not flex)

ODUflex nn FC PHY

ODUflex mN Eth PHY

TDM CBR

HO ODUk (l)

ODUflex 1

ODUflex m

ODUj (not flex)

Logical Flow(VLAN #1)

Eth PHY

ODUflex nLogical flow(VLAN #n)

N Eth PHY

TDM CBR

HO ODUk (l)

ODUflex 1

ODUflex m

ODUj (not flex)

Logical Flow(VLAN #1)

Eth PHY

ODUflex nLogical flow(VLAN #n)

N Eth PHY

TDM CBR

ODU k

ODUflex

ODUk

Circuit ODUflex

ODUflex Packet ODUflex

Transport Technology to suit

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BROADBAND NETWORKS

MPLS(-TP) LSP used as transporttechnology

GMPLS used as LSP-TP control plane

LSP bandwidths will exceed 0.5 Gb/s

Transport Technology to suitany required granularity

Ethernet

802.3

LSP

LSPLSP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

>0.5 Gb/s

traffic

Ethernet

802.3

LSP

LSPLSP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

LSP

LSP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

BW growthfewer LSPs

traffi

c

ULTRA-BROADBAND NETWORKS

OTN ODU(flex) provides a greener UBLSP alternative

GMPLS used as ODU control plane

Operators can route packet flows in

future through sub-Lambda-LSPs and

Lambda-LSPs

OTUkOTUk

HO ODUk

O

DUflex

ODU

ODUflex

EC/PW/IP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

ODUk

EC/PW/IP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

EVC/PW/IP

10/40/100 Gb/s

traffic

traffic

Transport

TechnologyEvolution

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Conclusions

Standardisation happens at the forefront of technology: just

before market introduction

ITU can help leverage the knowledge of academic environment

Good reserach alone is insufficient: dissemination of results via

standards increases payback

ITU-T SG 15 welcomes new ideas and new people andorganisations to remain in leading position

SG 15 is happy to organize brainstorming sessions to makeexperts familiar with new trends: proposals are welcome

Formalities exist, but are limited. Secreteriat is there to help

Next plenary meeting: Febr. 2011 in Geneva

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Documents

Transcript of t 290400000600102 Pp Te