Download pdf - EE11--E2 (CFA)E2 (CFA)

Transcript
Page 1: EE11--E2 (CFA)E2 (CFA)

E1E1--E2 (CFA)E2 (CFA)

FIBER TO THE HOME FIBER TO THE HOME

© BHARAT SANCHAR NIGAM LIMITED

FIBER TO THE HOME FIBER TO THE HOME

(FTTH)(FTTH)

Page 2: EE11--E2 (CFA)E2 (CFA)

High Speed DataHigh Quality

Video

Dependable

Voice

Service

To day customers wantsTo day customers wants

These services are delivered by

Digital Subscriber Lines (DSL)

Cable Modems

Wireless

Page 3: EE11--E2 (CFA)E2 (CFA)

The preferred user’s

Video

Data User

USER REQUIREMENTUSER REQUIREMENT

© BHARAT SANCHAR NIGAM LIMITED

The preferred user’srequirement

Voice

•Many services on one infrastructure is efficient

• Commercially viable for network owner/operator

• Efficiency = lower costs for users and service providers

• Enhanced choice is attractive to customers

Page 4: EE11--E2 (CFA)E2 (CFA)

To meet the costumers demand, service provider needs

a Robust networking solution.

The solution is fiber based networks on fiber based

technologies or FTTH

© BHARAT SANCHAR NIGAM LIMITED

technologies or FTTH

Page 5: EE11--E2 (CFA)E2 (CFA)

FTTH OFFERSFTTH OFFERS

Unlimited bandwidth

The flexibility to meet customer demand for

interactive, video-based services.

© BHARAT SANCHAR NIGAM LIMITED

Page 6: EE11--E2 (CFA)E2 (CFA)

Fiber in the loop Fiber in the loop

In FITL network architecture the fiber optic technology is

being deployed from Central Office (CO) of a telephone

carrier to a remote serving area interface(SAI) to an Optical

Network Unit (ONU) located at the customer premises.

© BHARAT SANCHAR NIGAM LIMITED

Network Unit (ONU) located at the customer premises.

� Normally, the fiber is deployed in either all or part of the

local loop distribution network.

• FITL includes various architectures such as FTTC, FTTH &

FTTP.

Page 7: EE11--E2 (CFA)E2 (CFA)

Fiber to the x ( FTTX)Fiber to the x ( FTTX)

It is a generic term for any network

architecture that uses optical fiber to replace

all or part of the usual copper local loop used

form telecommunications.

© BHARAT SANCHAR NIGAM LIMITED

form telecommunications.

Page 8: EE11--E2 (CFA)E2 (CFA)

Today, fiber networks come in many varieties,

depending on the termination point .i.e. FTTx

Fiber To The Node/Network (FTTN)

Fiber To The Curb or Cabinet (FTTC)

© BHARAT SANCHAR NIGAM LIMITED

Fiber To The Curb or Cabinet (FTTC)

Fiber To The Buildings (FTTB),

Fiber To The Home (FTTH),

For simplicity, most people have begun to

refer to the fiber network as FTTx, in which

x stands for the termination point.

Page 9: EE11--E2 (CFA)E2 (CFA)

FTTNFTTN

Fiber to the node/ Neighbourhood (FTTN)/

Fiber to the cabinet (FTT Cab).

Fiber- optic cables runs to a nearest serving cabinet

(neighbourhood).

Customers connect to this cabinet is using twisted

© BHARAT SANCHAR NIGAM LIMITED

Customers connect to this cabinet is using twisted

pair wiring.

The area served by the cabinet is less than

1500 meters in radius.

If the cabinet serve an area of less than 300

meters in radius then the architecture is normally

called fiber to the curb.

Page 10: EE11--E2 (CFA)E2 (CFA)

Advantages :-

Low Cost

Non-blocking or low- blocking performance better

supports convergence.

Extremely flexible to deploy.

© BHARAT SANCHAR NIGAM LIMITED

Extremely flexible to deploy.

Allows the use of a variety of media from the

Telephone Exchange to the

User .

Disadvantages :-

Supports less bandwidth

Page 11: EE11--E2 (CFA)E2 (CFA)

FTTC (Fiber To The Curb) FTTC (Fiber To The Curb)

O

L

T

E

Optical Fiber Cable

User’s Home

Copper Cable

ONUO

L

T

E

O

L

T

E

Optical Fiber Cable

User’s Home

Copper Cable

ONUONU

© BHARAT SANCHAR NIGAM LIMITED

E

Central Office

ONU

EE

Central Office

ONUONU

A method of installing optical fiber cable by

the curb near the user’s home.

Page 12: EE11--E2 (CFA)E2 (CFA)

FTTB (Fiber To The BuildingFTTB (Fiber To The Building)

O

L

T

Optical Fiber Cable

User’s Building

ONU

Copper loops

O

L

T

O

L

T

Optical Fiber Cable

User’s Building

ONU

Copper loops

© BHARAT SANCHAR NIGAM LIMITED

T

E

Central Office

T

E

T

E

Central Office

By introducing fiber cables from the fiber termination

point to the home living space or business office space

FTTB can be converted to full FTTH.

Page 13: EE11--E2 (CFA)E2 (CFA)

FTTH (Fiber To The Home) FTTH (Fiber To The Home)

O

L

T

E

Optical Fiber Cable

User’s Home

ONU

O

L

T

E

O

L

T

E

Optical Fiber Cable

User’s Home

ONU

© BHARAT SANCHAR NIGAM LIMITED

E

Central Office

EE

Central Office

FTTH is the final configuration of access

networks using optical fiber cable.

Page 14: EE11--E2 (CFA)E2 (CFA)

FTTC, the next step, ensures that fiber is

available very close to the customer/building.

FTTN ensure that all the Network Elements

shall have fiber medium.

Steps in Evolution of FTTHSteps in Evolution of FTTH

© BHARAT SANCHAR NIGAM LIMITED

shall have fiber medium.

FTTB fiber shall be made available

to all buildings.

FTTH is the next and ultimate stage

in this plan.

Page 15: EE11--E2 (CFA)E2 (CFA)

Fiber to the PremisesFiber to the Premises

It is a form of fiber-optic communication delivery in

which an optical fiber runs directly onto the

customers' premises.

2. This is dissimilar with other fiber optic

communication networks such as (FTTN), (FTTC)

© BHARAT SANCHAR NIGAM LIMITED

communication networks such as (FTTN), (FTTC)

or hybrid fiber coaxial (HFC), all of which depends

upon copper wires or coaxial cable for "last mile"

delivery.

Page 16: EE11--E2 (CFA)E2 (CFA)

Fiber to the premises can be further categorized according to the

optical fiber ends.

FTTH (Fiber to the Home):- It is the form of fiber optic

communication network in which optical signal reaches upto

the end user’s office.

© BHARAT SANCHAR NIGAM LIMITED

the end user’s office.

2- FTTB (Fiber to the Building):- It is the form of fiber optic

communication delivery in which optical signal reaches upto

the building, but where the fiber terminate before reaching the

home, business premises or set of customers. The remaining

path uses other than Optical Fiber.

Page 17: EE11--E2 (CFA)E2 (CFA)

Optical Portion:-Optical Distribution Network have

several technologies to deploy.

Shared

© BHARAT SANCHAR NIGAM LIMITED

Direct

Fiber

Shared

fiber

Active

Optical

Network

Passive

Optical

Network

Page 18: EE11--E2 (CFA)E2 (CFA)

Here each fiber leaving the central office goes to

exactly one customer .i.e. point to point topology

Provides excellent bandwidth because each

DIRECT FIBERDIRECT FIBER

© BHARAT SANCHAR NIGAM LIMITED

Provides excellent bandwidth because each

customer have their own dedicated fiber.

Costlier due to the large amount of fiber

requirement.

Page 19: EE11--E2 (CFA)E2 (CFA)

In this architecture, each fiber leaving the

central office is actually shared by many customers.

There are two leading optical distribution networks with

SHARED FIBERSHARED FIBER

© BHARAT SANCHAR NIGAM LIMITED

There are two leading optical distribution networks with

which we can achieve this split.

Active optical network (AONs)

Passive optical network (PONs)

Page 20: EE11--E2 (CFA)E2 (CFA)

In this architecture, power equipment is used to

distribute the signal such as switch, router or

multiplexer.

Each signal leaving the central office is

Active optical networkActive optical network

© BHARAT SANCHAR NIGAM LIMITED

Each signal leaving the central office is

directed only to the particular customer.

Active Ethernet uses optical switches to

distribute the signal.

Equipment performs layer 2/layer 3 switching

and routing.

It can handle upto 1000 customers.

Page 21: EE11--E2 (CFA)E2 (CFA)

PON is a point -to-multi point, fiber to the premises

network architecture.

Un-powered optical splitters are used to enable

a single optical fiber to serve multiple customers.

Passive Optical NetworksPassive Optical Networks

© BHARAT SANCHAR NIGAM LIMITED

a single optical fiber to serve multiple customers.

A PON configuration with 1:32 splitters reduces

the amount of fiber.

Down stream signal from the Central Office is

broadcasted to each customer premises sharing a fiber.

Upstream signals are combined using a multiple excess

protocol towards Central Office.

Page 22: EE11--E2 (CFA)E2 (CFA)

Technology Technology OptionsOptions for FTTHfor FTTH

© BHARAT SANCHAR NIGAM LIMITED

Page 23: EE11--E2 (CFA)E2 (CFA)

The Optical Line Terminal (OLT) equipment is installed

in Central Office as head end.

OLT transmits optical signal to splitter, from

Functioning of PON ArchitectureFunctioning of PON Architecture

© BHARAT SANCHAR NIGAM LIMITED

OLT transmits optical signal to splitter, from

where the signal is distributed to multiple customers directly

or via another splitters.

Optical Network Terminals (ONT)

terminate the signal at the customer premises.

Page 24: EE11--E2 (CFA)E2 (CFA)

Maximum distance is 20 km in between OLT and

ONT for 1:32 splitter.

PONs do not require any power for the splitters so

© BHARAT SANCHAR NIGAM LIMITED

PONs do not require any power for the splitters so

operational cost and complexity is reduced.

Passive optical splitters are used to

split the fiber/ bandwidth and share among many

customers.

Page 25: EE11--E2 (CFA)E2 (CFA)

Telechoice

© BHARAT SANCHAR NIGAM LIMITED

Telechoice

1:4

1:8

1:16

1:32

Page 26: EE11--E2 (CFA)E2 (CFA)

O

Video/Audio over

IP services

Other

Networks

Management

System

ONU

ONUTDM

Video

Data

Voice

PABX

PON Architecture PON Architecture

© BHARAT SANCHAR NIGAM LIMITED

O

L

T

Central

Office

IP N/Ws

CATV overlay

services

1:32(64) Optical Splitter PON

ONU

TDMA

Data

0-20 Km physical reach (60 Km logical

reach supported by protocol)

2G

BTS

TDM

Page 27: EE11--E2 (CFA)E2 (CFA)

The basic elements in any PON system The basic elements in any PON system

are:

OLT : A Central Office (CO) equipment providing

PON with the various network interfaces

ONU/ONT : An External Plant / Customer Premises

equipment providing user interface for many/single

© BHARAT SANCHAR NIGAM LIMITED

equipment providing user interface for many/single

customer

PON : distributed or single staged passive optical

splitters/combiners providing connectivity between

OLT & multiple ONU/ONTs.

NMS : Management of the complete PON system

from OLT

Page 28: EE11--E2 (CFA)E2 (CFA)

BSNL FTTH PLANBSNL FTTH PLAN

Phase-I (2008-09): In phase-I overlay access network is

planned in 98 cities where the number of Direct Exchange

Lines are more than 3 lakhs i.e 30 millions, therefore Ethernet

in the first mile using the FTTB, FTTH is proposed to be

deployed.

© BHARAT SANCHAR NIGAM LIMITED

deployed.

FTTH systems are deployed as either point to point optical

system or point to multi point fiber system (PON).

7 lakhs customers are targeting in the first year.

1.5 lakhs customers in 73 cities with GE-PON.

5.5 lakhs customers in 25 cities with GE-PON &

G-PON.

Page 29: EE11--E2 (CFA)E2 (CFA)

Phase-II (2009-10): In second phase of

G-PON/GE-PON deployment will be extended to

other cities having Optical Access Network cables

laid as per OAN target.

© BHARAT SANCHAR NIGAM LIMITED

laid as per OAN target.

In second phase FTTH plan will target 7 lakhs

customers to be extended with fast Ethernet/ Gigabit

Ethernet service to their buildings on Fiber.

Page 30: EE11--E2 (CFA)E2 (CFA)

Phase-III (2010-11): In third phase OAN project is

proposed to be commenced in 198 cities.

Sufficient fiber structure shall be laid in all these cities for

commencing FTTH service.

© BHARAT SANCHAR NIGAM LIMITED

commencing FTTH service.

The total target of FTTH deployment in third phase will

be approximately 7.5 lakhs.

The customer base on FTTH upto March-2011 shall be

20 lakhs (200 million).

Page 31: EE11--E2 (CFA)E2 (CFA)

FLAVORS OF PONFLAVORS OF PON

Broadband PON

Ethernet PON (EPON) / Gigabit Ethernet PON

(GEPON)

© BHARAT SANCHAR NIGAM LIMITED

(GEPON)

Gigabit PON (GPON)

Page 32: EE11--E2 (CFA)E2 (CFA)

© BHARAT SANCHAR NIGAM LIMITED

Page 33: EE11--E2 (CFA)E2 (CFA)

© BHARAT SANCHAR NIGAM LIMITED

Page 34: EE11--E2 (CFA)E2 (CFA)

© BHARAT SANCHAR NIGAM LIMITED

Page 35: EE11--E2 (CFA)E2 (CFA)

GEPON based Next Generation Play Networks Planning:

The GEPON network do not support the redundancy so only

single fiber and single input splitters are planned.

There are 20 PON ports per GEPON chassis

and each chassis is capable to cater 32X20=640 customers.

© BHARAT SANCHAR NIGAM LIMITED

and each chassis is capable to cater 32X20=640 customers.

There are only 1:2, 1:4, 1:8. 1:16 and 1:32 splitters.

1:32 split architecture shall be used in the highly

dense locations and multistoried buildings.

Page 36: EE11--E2 (CFA)E2 (CFA)

PLANNING PLANNING GUIDELINESGUIDELINES

Out Door Network (ODN) planning & fiber planning for

GPON

The OAN to be planned in all broadband cities by

deploying high count Optical Fiber cables.

© BHARAT SANCHAR NIGAM LIMITED

The minimum fiber count to be deployed in these cities

will be 96Fibers or 288Fibers and above in main routes and

24Fiber/12Fiber cables for the buildings. The leading fiber

will be terminated in fiber termination box.

Page 37: EE11--E2 (CFA)E2 (CFA)

2:32 split architecture

It is desirable to have one splitter at the premises of the

customer / building / locality.

The two leading fiber from (24/12Fiber cable) cables,

fiber 1 & 2 will be input to the 2:32 splitter. These 2 fiber

© BHARAT SANCHAR NIGAM LIMITED

fiber 1 & 2 will be input to the 2:32 splitter. These 2 fiber

can be joined in the two sides of OAN. The other side of the

main route fiber will form a ring and terminated on other

port.

Page 38: EE11--E2 (CFA)E2 (CFA)

Cascade split architecture in GPON

As the number of customers will be less in the beginning

and distributed across the city, cascade splitters can be

deployed to cover more area.

The number of proposed split can be only two.

Splitters may be used in any of the following combinations

© BHARAT SANCHAR NIGAM LIMITED

Splitters may be used in any of the following combinations

such as:

2:4 & 1:16

2:4 & 4X (1:8)

2:8 & 1:4 etc.

Page 39: EE11--E2 (CFA)E2 (CFA)

Advantage of FTTH through PONAdvantage of FTTH through PON

Being passive network, no active componentsare required from Central office to end user.Single fiber to the end user providing revenue

generating services.

© BHARAT SANCHAR NIGAM LIMITED

generating services.FTTH features local battery backup & low

power consumption.Reliable, scalable & secure.Future proof network architecture.

Page 40: EE11--E2 (CFA)E2 (CFA)

Application AreasApplication Areas

Residential or Business Services �High Speed Internet�Transparent LAN Service �Broadcast Video�Multi-Play (Voice, Video, Data etc.)

© BHARAT SANCHAR NIGAM LIMITED

�Multi-Play (Voice, Video, Data etc.)�Private Line�TDM Telephony�IP Telephony (VoIP)Wireless Services�Wireless backhaul over PON

Page 41: EE11--E2 (CFA)E2 (CFA)

© BHARAT SANCHAR NIGAM LIMITED


Recommended