ANCIT WORKSHOPTorino 30-31 March 1998 1

Access Network in EURESCOM Projects, and the P614 Project

Umberto Ferrero CSELT (P614 Project Leader)

Participants coming from 12 companies (EURESCOM Shareholders)

Michalis MavisP614 EURESCOM Project Supervisor

ANCIT WORKSHOPTorino 30-31 March 1998 2

• P614 is becoming increasingly popular as a

reference source of independent broadband

access network recommendations-WEB sites

http://www.cselt.it/Cselt/euresc/P614 http://www.eurescom.de

-request for reprints and documents from operators,

-manufacturers, journalist and consultants all over the world

• Conferences, magazines, workshops

• Deliverables are public domain

P614 as source of “access network” information

ANCIT WORKSHOPTorino 30-31 March 1998 3

EURESCOM and the access network: managing the European diversity

• Shareholders

- over 20 Telecom Operators (Telcos)

- ... with several service and network scenarios

- no “one size fits all” approach

• Identification of areas of common interest

• Access network-related studies since 1991

- Common results (EURESCOM P306 and P413)

- Customer-specific customization

FSAN

ATM - PON

ANCIT WORKSHOPTorino 30-31 March 1998 4

Access network in EURESCOMP306: Access network evolution and preparation for implementation

P413: Optical networking in the local loop

1992-94

1994-96

1996-98

WOMANWORKSHOP

BAHNWORKSHOP

P614: Implementation strategies for advanced access networks

• Outline of specifications for broadband access networks

• Migration paths towards B-ISDN access networks

• Exploration of broadband radio access

• FTTx enabling technologies

• FTTH architectures, services and technical issues

• Techno-economic evaluation and comparison of identified B-

ISDN/ATM based network alternatives

ANCITWORKSHOP

ANCIT WORKSHOPTorino 30-31 March 1998 5

ADSL/ADSL/FTTExchFTTExch

PONPONFTTCabFTTCab

PONPONFTTHFTTH

RadioRadio

PONPONFTTB/CFTTB/C

ONU

ONU

HFCHFCFN

BS

P614 addresses several access

network architectures

ANCIT WORKSHOPTorino 30-31 March 1998 6

Access as a commodity?

Satellite

CATV network

PowerlinesPSTN(existing copper plant)

Broadbandoverlay network

Fixed radio accessMobile

Several access infrastructures can be exploited in the same area

USER

ANCIT WORKSHOPTorino 30-31 March 1998 7

Target technologies for fixed access• FSAN based PON solutions

- identified as technology of choice by EURESCOM P306 (April 1994, “Guidelines for broadband access networks”)

- full PON specification now available (ITU-T G.983)

- approaching market availability

• Point to point systems

• ... both complemented by a range of high speed copper access systems

• ATM common platform

ANCIT WORKSHOPTorino 30-31 March 1998 8

FTTx enabling technologiesTopics addressed by P614

• Component technology- Maturity and cost

• Outside plant technology- Cabling, ducting, connectors, cabinets

- Powering

- Testing

• Transmission technology- Point to point links (access and drop)

- Exploitation of WDM

- Alternative drop technologies (CDSL, powerlines)

RFI on Plastic Optical Fibres (POFs)

ANCIT WORKSHOPTorino 30-31 March 1998 9

Down to earth

• ... or under the ground: the importance of outside plant technologies

- powering

- cabinets

- digging, ducting

- cabling

• 70% of the access network costs is due to infrastructure: how this burden can be reduced?

- Re-using copper wires

- Adopting innovative installation techniques!

ANCIT WORKSHOPTorino 30-31 March 1998 10

Optical cabling elements for FTTx

FTTC/Cab

FTTB

FTTH

FTTH/A

Manhole

Duct Duct / direct buried

LEX

O

L

T

MDFOM

Cables : Connectors :

Splices in enclosure : Splitter :

MDF : main distribution fram e OM : optical monitoring

ONU

ONU

ONUONU

ONU

ONU

ANCIT WORKSHOPTorino 30-31 March 1998 11

Broadband RADIO ACCESS

P614 is also addressingissues related to radioaccess

Advantages of radio access:• potentially low cost

• fast deployment

• progressive investments

Drawbacks• partial coverage

• spectrum availability

• lack of standardisation

UMTS

Terrestrial solutions

LMDS / MMDS

GEO, LEO

Satel

lites

RLANBroadbandData Network

Set TopUnit

Hub StationAir InterfaceUnit

VideoServer

PublicTelephoneNetwork

SubscriberRF Unit

SubscriberNetworkInterface Unit

Fibre/Wireless

CABINET

LOCALEXCHANGE(HEAD-END)

BOX

VERTICALCABLING

HOMENETWORK

SERVICE1

CORE NETWORKCORE NETWORK(ATM, IP,(ATM, IP,

POTS/ISDN)POTS/ISDN)

SERVICE2

SERVICE3

PRIMARYACCESS NETWORK

SECONDARYACCESS NETWORK

CUSTOMER

ANCIT WORKSHOPTorino 30-31 March 1998 12

Techno-economic evaluation

Rationale

• Techno-economics is an on-going concern

• Advantages of comparison carried out by an independent body with the PNOs direct expertise

Targets

• Update of former results

• Realistic price of equipment for new technologies

• Comparison of identified B-ISDN network alternatives

• Broadband radio evaluation

• Flexible adaptation of results to local needs

ANCIT WORKSHOPTorino 30-31 March 1998 13

• What is the cost of bandwidth ?• Are ADSL and HDSL solutions attractive ?• HFC technology is a cheap solution, or not ?• What about the BPON architecture ?• FTTx (but how close to the customer ?) x = ???

CAPACITY UPGRADE

• What is the cost to upgrade ?• What is the financial risk ?

Some techoeconomic considerations

INITIAL INVESTMENT

$

$$$

ANCIT WORKSHOPTorino 30-31 March 1998 14

The challenge of the broadband access network implementation

• Time for real deployment- focus on practical issues

• End of a single architecture- access network as a combination of technologies, keeping a

comprehensive overall network perspective

• Ability to support the changing needs of Operators - there is still opportunity for cooperation in a competitive environment

- coordinated contribution to standardization bodies

- techno-economic evaluations

The three key messages

ANCIT WORKSHOPTorino 30-31 March 1998 15

P614 Deliverables

Title Planned issue date

D1 An analysis of the relative benefits of proposed SNI standards April 1997

D2 Target B-ISDN access network architectures December 1997

D3 Techno-economic analysis of major factors of B-ISDN/ATM upgrades September 1997

D4 Opportunities for broadband radio technologies in the access network January 1998

D5 Optical technologies for advanced access networks: early results December 1997

D6 Evolution paths towards target B-ISDN access networks July 1998

D7 Optical technologies for advanced access networks: final results September 1998

D8 Elaboration of common FTTH guidelines July 1998

D9 Contributing to standardisation bodies and other fora April 1998

D10 Techno-economic evaluation of B-ISDN access networks

architectures, scenarios and business cases

September 1998

D11 Evaluation of Broadband Home Networks for residential and small

business

September 1998

D12 FTTH: Definition of the suitable powering architectures * February 1998

D13 FTTH: Definition of access network quality and cost * February 1998

D14 FTTH: Definition of related service offer strategies * February 1998

* Deliverables to be produced following approval by the Board of Governors.

ANCIT WORKSHOPTorino 30-31 March 1998 16

WHAT AFTER P614 ?

A number of advanced access networks are available Interoperability and field operation testing is needed

Considering that ...

P614 proposes ...

The creation of a co-ordination platform for lab testing of broadband access equipment, broadband home network technologies, fixed-mobile broadband access network demonstrations co-ordinating these activities with the FSAN actions

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Proposals for WP-1999