kommunikatsiooniteenuste arendus (irt0080)b-pon + dsl t opl o gy fileed tlc atev w h mou nt 4 31 7 7...

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1

Kommunikatsiooniteenuste

arendus (IRT0080)

loeng 6/2014 Taristu

Avo

avo.ots@ttu.ee

Taristu

2

Optical Transmission

3

Optical

Fibre

Transmission

System

Optical

Fibre

Transmission

System

electrical

signal electrical

signal

optical

signal

Advantages of optical transmission:

1. Longer distance (noise resistance and less attenuation)

2. Higher data rate (more bandwidth)

3. Lower cost/bit

4

FTTx

• Fiber-to-the-node (FTTN)

• Fiber-to-the-curb (FTTC)

• Fiber-to-the-building (FTTB)

• Fiber-to-the-home (FTTH)

Infotransport ja teenused

5

AON vs PON

8

Kiiruste areng

9

10

Special OH octets:

A1, A2 Frame Synch

B1 Parity on Previous Frame

(BER monitoring)

J0 Section trace

(Connection Alive?)

H1, H2, H3 Pointer Action

K1, K2 Automatic Protection

Switching

810 Octets per frame @ 8000 frames/sec

9 rows

90 columns

1

2 Order of

transmission

A1 A2 J0 J1

B1 E1 F1 B3

D1 D2 D3 C2

H1 H2 H3 G1

B2 K1 K2 F2

D4 D5 D6 H4

D7 D8 D9 Z3

D10 D11 D12 Z4

S1 M0/1 E2 N1

3 Columns of

Transport OH

Section Overhead

Line Overhead

Synchronous Payload Envelope (SPE)

1 column of Path OH + 8 data columns

Path Overhead

Data

STS-1 Frame 810x64kbps=51.84 Mbps

125 s

11

SONET/SDH rates

Example: An OC48 frame has 48 x 90 columns in 125 s

B E R

B-PON + DSL

T o p o l o g y F i l e E d i t L o c a t e V i e w H e l p

M o u n t 4 3 1 7 4 3 7 1 9 5 0 7 9 % / N e t w o r k

T r a f f i c H e l p

Splittr

DSL modem

DSLAM

POTS Card

E-PON access

OLT

ONU

Metro ring

CPE

DSL broadband access

DSL broadband access DSL broadband access

Infovoogude jaotamine (DL)

14

Infovoogude jaotamine (UL)

15

ESTWIN

• Eesmärk

– Eesti maapiirkondadele kiire lairibaühenduse

tagamine (100Mbit/s)

• Baasvõrk kannab nime FiberCo

• Kaks baasvõrgu stsenaariumi

– Võrk on ühendatud lähima olemasoleva

operaatori saidiga

– Võrk on ühendatud vähemalt kahe olemasoleva

operaatori saidiga

ESTWIN

• 6000 km

• Võrguühenduskohad 1421

• Katab 98% Eesti rahvastikust

• Ühenduspunkt majapidamisest 1.5km

kaugusele

Struktuur

19

Router

Router Router

ONE ONE

ONE

Router

Router

Optical Network

End

Customer

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