E. Demierre and P. Schroeter 1

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

P614 TASK 5

FTTHWhat future for FTTH?

E. Demierre and P. Schroeter 2

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

Three key conditions for short/medium term FTTH

implementation: Powering, Network quality, Service strategy

Eric Demierre, Swisscom

Philippe Schroeter, Swisscom

Swisscom, CSELT, DTAG, Hungarian Telecom, Telenor

E. Demierre and P. Schroeter 3

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

P614 Task 5: Content of presentation

• New environment & opportunities for FTTH

• The approach of P614 Task 5• Achieved results by P614 Task 5 • Powering• Availability• Example of investment costs • Conclusions

E. Demierre and P. Schroeter 4

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

New environment & opportunities for FTTH

• Engagement of several PNOs in FTTH (=> large scale production)

• Penetration of GSM and mobile services (=> role of the fixed access network is changing)

• Importance of investments for PNOs (=> flexible, future proof connected with revenues)

• Demand for low-cost high bandwidth access (=> multimedia, Internet, ...)

E. Demierre and P. Schroeter 5

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

• Growth of the Internet telephony (=> voice can be transported on data networks)

• Lower availability of services (=> PCs are out of order during power mains failure)

• Low availability of applications (=> Software incompatibility problems, bugs in the operating systems)

• Need of service symmetry (=> e.g. teleworking)

New environment & opportunities for FTTH

E. Demierre and P. Schroeter 6

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

The approach of P614 Task 5Hypotheses: FTTH is complementary to GSM

GSM FTTH High availability

NBcommunications

Power-outageindependent

Fixed BBcommunications

No poweringback-up (easypowering)

E. Demierre and P. Schroeter 7

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

Achieved results by P614 Task 5

• Powering for FTTH: architectures, availability, costs (Deliverable 12)

• Availability models for FTTH with costs (Deliverable 13)

• Characteristics of BB services taking into account FTTH (Deliverable 14)

• Elaboration of common FTTH guidelines (Deliverable 8)

E. Demierre and P. Schroeter 8

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

Powering:Unavailability & Back-up

Part of interruption duration

not covered by the back-up

Relative improvement of the total power network unavailabilityconsidering the existence of a backup power supply

0.00%10.00%20.00%30.00%40.00%50.00%60.00%70.00%80.00%90.00%100.00%

012345678910

Duration of the backup [h]

E. Demierre and P. Schroeter 9

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

Preferred Powering Solution for FTTH:Local Powering

• Local powering by means of an AC/DC converter.

• ONU power consumption from 6.5 W to 13 W

• Optional back-up example:– 6.5 W minimum (core 5 W + telephony card 1.5 W)

– Ni-Cd battery Panasonic P-V215A (6V, C2.5=1200 mAh), cost 70$

– Additional cost for battery charger and regulator, 10$ to 20$

– Total additional cost 80$ to 90$

E. Demierre and P. Schroeter 10

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

Availability

Increase of availability:• Enhancement of ONU power supply availability using power back-up• Enhancement of OLT and/or ONU equipment availability

Unavailability and down time per year for FTTH APON (low cost implementation)

FTTH APON element Mean timeto repair [h]

Unavailability Down time peryear

OLT equipment 3.5 1.0·10-4 53minOLT power supply neglect neglectFibre (feeder and distribution, 2km) 21 2·10 -5 10minOptical splitter 21 2·10 -6 1min

ONU equipment 24 2.4·10-4 2h 07minONU power supply, local powering, no back-up 2.7·10-4 2h 23minTotal FTTH APON 6.3 10-4 5h 33min

E. Demierre and P. Schroeter 11

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

Availability: Contribution of elements

63.1

89.4

3.9

152.4

189.2

47.3

0.44

1.3

26.8

26.3

0 20 40 60 80 100 120 140 160 180 200

OLT equipment

Optical fiber

Optical splitter

ONU equipment

ONU powering

Element contribution to unavailability [min/year]

Best case

Worst case

E. Demierre and P. Schroeter 12

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

Analysis of Investment Costs

• Hypothesis– All 512 ONUs are installed and connected to one OLT– Average distances: OLT - splitter: 1.6 km, splitter

- ONU: 400 m– One fibre per O/E (to save splitter and splicing costs)

• Investment costs of the whole PON: mk = number of elementsPk = unit price per element

P m PPON kk

k

E. Demierre and P. Schroeter 13

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

ATM-PON: Analysis of Investment Costs

Unit costs per ONUk Device mk Pk relative [Euro]1 OLT core for 512 ONU’s 1 P1 P1/5122 PON interface electronics (for MAC protocol) 16 P2 P2/323 OLT o/e transceiver, 622 Mbps , 155 Mbps , for 32 ONUs 16 P3 P3/32 1664 Connector pair at OLT o/e transceiver 16 P4 P4/325 Splices for connector 16 P5 P5/326 Cabled fibre: OLT splitter, 1.6 km 16 P6 P6/327 1:32 splitter 16 P7 P7/328 Splices at splitter 528 P8 P8/32*33 4799 Cabled fibre: Splitter ONU, 0.4 km 512 P9 P9

10 Splices for connector 512 P10 P10

11 Connector pair at ONU 512 P11 P11

12 ONU o/e transceiver, 622 Mbit/s , 155 Mbit/s 512 P12 P12

13 ONU core including controller & power supply (220V/110VAC available)

512 P13 P13 304

14 Line card PC 512 P14 P14

Sum PPON=486 kEuro Puser=949

E. Demierre and P. Schroeter 14

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

Promising Situations for Short-Term FTTH

• Greenfield situations

• Old copper network needs to be replaced

• Provisioning of digital video (similar to CATV)

• Situations where installation of aerial cables is possible.

• Spare room in ducts

• Existing tube for air blow fibre

E. Demierre and P. Schroeter 15

TRIBAN WORKSHOP

TRIBAN Workshop

Bern, 17-19 November 1998

Conclusion

• A low-cost FTTH solution is proposed as a suitable solution for matching customer wishes and operator requirements.

• The solution has been justified in term of services, availability, powering and costs.

• Technical issues and justifications have been made available in 4 deliverables (Deliverable 12, 23, 14 and 8)