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IMPACT OF THE SFN

APPROACH ON SPECTRUMPLANNING

1

Nguyen Nhu Nhat

Audio Visual Global JSC (AVG), Vietnam

April, 2013


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1. ITU recommendation of using UHF band

2. Vietnam ASO and Spectrum planning of UHF

band

3. The necessary of re-allocation of spectrumfrequency for UHF band

4. Impact of the SFN approach on the spectrum

planning

5. SFN deployment in Vietnam

6. Conclusion

CONTENTS


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1.ITU

recommendationof using UHF band

CONTENTS


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1. WRC-07: To allocate the frequency band 790-862 MHz in Region

1 to mobile service

To identify parts of 698-960 MHz in Region 2 and 790-

862 MHz in the Region 1 and 3 for the use of IMT

2. WRC 12:

1. 800 MHz: sharing problems resolved

2. 700 MHz: allocation to mobile service globally

available from 2015

3. Additional spectrum: to be considered by WRC-15


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Ref : ITU


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2. Vietnam ASO

and Spectrumplanning of UHF

band

CONTENTS


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Ref: ARFM, Vietnam; ARFM - Authority of Radio Frequency Management

Vietnam Analog Switch Off


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Ref: ARFM, Vietnam

Vietnam Spectrum planning of UHF band


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3. The necessary of re-

allocation ofspectrum frequency

for UHF band

CONTENTS


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1. Trend of Telecommunication technology

Mobile to Mobile communications (Voice,

Data)

Mobile broadband (tablet, smart phone)

Wireless MAN

2. Trend of Television technology

Compression

Analog Switch Off

Transmission Digital Development


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1. Trend of Telecommunication technology

15 Kbps

400 Kbps

15 Mbps

115 Mbps

1 Gbps

Source: Cisco

Need more

bandwidth


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a. Video Compression

JPEG

MPEG

MPEG 2

MPEG 4

b. Audio Compression

c. Analog Switch off

d. Digital develop MFN, SFN

DVB-T, DVB-T2

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2. Trend of Television technology


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MPEG 2 MPEG 4

SDTV 2 to 4 Mbps 1 to 2 Mbps

HDTV 8 to 15 Mbps 4 to 10 Mps

Bit rate MPEG 2 and MPEG 4

DVB-T DVB-T2

Bit rate 4.98 to 31.67 Mbps 5.5 to 50.3 Mbps

Bit rate DVB-T and DVB-T2

Compression and DTT Bit rate


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Overview of the Rooftop Implementation Scenarios DVB-T2 (EBU Tech 3348)

Analog television: One program (SDTV) in one channel 8MHz

DTT (DVB-T2, MP4): up to 40 (SDTV) in one channel 8MHz

Analog and Digital Capacity


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4. Impact of the

SFN approach onthe spectrum

planning

CONTENTS


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MFN vs SFN

NO need: The same transport stream (TS)

More frequencies: One Frequency for One Site

NO need: At the same time

The same transport stream (TS)

One Frequency: The same frequency for all Site

At the same time

SFNMFN


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DVB-T2 - SFN Configuration

SFN principles:

1. The same transport stream

2. The same frequency for all site

3. At the same time


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SFN advantages

1. More efficiency of using spectrum frequency

2. Robustness in coverage

3. Simple to manage and allocate frequency (ARFM and

Broadcaster)4. Simple to setup network to coverage for indoor and

portable reception

SFN challenges

1. Self-interference2. Synchronization

3. Not allow inserting Local Programs

The Advantages and the challenges of SFN (compare with MFN)


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Vietnam Television broadcasting to spectrum frequency planning

Ref: ARFM, Vietnam

Wh ARFM (Vi )


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Why ARFM (Vietnam)

To encourage using single frequency networks (SFN)

where appropriate

1. 109 TV programs FTA all over country, in details: 63 Local TV Provider broadcast about 90 FTA TV programs

One Local TV provider broadcast in one Province and neighboring areas

About 20 nationwide FTA TV programs

About 20 Pay TV programs from domestic

2. Other Pay TV programs from foreign

3. Incase DVB-T2, MPEG 4, TS bit rate ~30Mbps: If choose SDTV bitrate: = 1.5Mbps/ 1 SDTV

20 SDTV bitrate: = 30Mbps

If set up SFN network: One channel frequency (8Mhz) enough for 20

SDTV (~30Mbps) broadcast nationwide, and simply to manage and control

(for both ARFM and TV Provider)

If set up MFN network: Several frequencies (8Mhz) to be use for 20 SDTV(~30Mbps) broadcast nationwide, and making difficult to manage and

control; addition not enough frequency for Transition to Digital period.

So on with the other TV programs


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Vietnam Spectrum planning from Digital Roadmap (draft)


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5. SFN deployment

in Vietnam

CONTENTS


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DTT in Vietnam

{Only AVG roll out SFN (DVB-T2) network currently}

Ref: ARFM, Vietnam


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AVG milestones

10th Oct,

2010

Trial of DVB-

T/T2 and

DVB-S2

11th Nov, 2011

Official

launched service

with DVB-T2

and DVB-S2

2010 2011 2012 2013


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AVG SFN

- SFN network-Nationwide Network

- 03 frequencies (57,58,59)

- Adjacent Channel

- DVB-T2

- MPEG 4

- IP transmission- 10 HDTV + 60 SDTV


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AVG SFN

About 50% of households

2013 Coverage 2016 Coverage

(Planning)

About 77% of households


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AVG SFN parameters

Parameters Value

DTT network DVB-T2 / SFN

Frequencies Channel 57, 58, 59

Bandwidth 8MHz

PLP mode Single PLP

Transmission mode 64QAM

FFT 32k/normal

Guard interval 19/256

Pilot Pattern PP4

Constellation RotatedCode rate

TS bit rate 30 Mbps


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1. Remote Operation

2. QoS 24/7/365 by probe network

3. Advanced technology4. Turnkey SFN network deployment our self

5. Develop Remote Operation Software our self

6. Designed and manufactured Receiving antenna

AVG SFN keys


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6.Conclusion

CONTENTS


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SFN + DVB-T2 + MPEG4

=The best use of frequency spectrum !


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Thank you for your attention!

31

April, 2013

Nguyen Nhu Nhat

Email: [email protected]
mailto:[email protected]:[email protected]

readi aspf2 haiphong 0413 nguyen nhu nhat

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