Marie Josée (MJ) Drouin,

SMPTE Toronto Chapter BootCamp, June 8th, 2010

© D. Tech 2010

Video over IP

goes Wireless

A DVB-H Tutorial

© D. Tech 2010

Who am I?

Director with 15 years of Media experience, I lead technical teams of up to

30 people and 3 managers to deliver most aspects of the business -

Operations, Customer Services, Information Technologies, Project

Management, Engineering, and Procurement. I developed expertise in

managing cable, wireless, satellite, transmission, engineering and software

development. I worked at Bell, Teleglobe, Intelsat, CBC and as a expert

consultant.

Professional Engineer, Masters in Technological Management, ITIL

foundation, PMP

I have extensive experience in speaking since the 90's (ouf!), subjects were

always a mix of technologies, commerce and management. Past engagements included: My video is a file, now what? (2010), Service Oriented

Architecture: Tutorial for the Broadcasters (2010), Pitfalls of SW development: What every

executive should know (2009), 8 weeks on Twitter: I love it! (2009), The Future of Broadcast

Archive Systems (2008), DVB-H: Video over IP goes Wireless (2006), HDTV distribution

(2005), Video over IP (2004) and, Several broadcast technical training (1994-1998): Video

101, Digital Video and Compression 201, Video testing techniques 301.

http://www.linkedin.com/in/mjdrouin

http://twitter.com/mjdrouin

2

MJ D

rouin

© -

May 1

9th

, 2010

-V

SF

© D. Tech 2010

© D. Tech 2010

Agenda

1. Video over Mobiles

2. DVB-H Technical Review

3. System Technical Review

© D. Tech 2010

Introduction

Smart Phones = 50% by Q3 2011

50% users watch video on Smart Phones

Source: Nielsen’s data from Q3 2009

Marie Josée (MJ) Drouin,

SMPTE Toronto Chapter BootCamp, June 8th, 2010

© D. Tech 2010

Video Over Mobiles

© D. Tech 2010

Mobile: What’s different?

Traditional DTV Display

Uses wireline or large antennas

Has unlimited 110V/220V power

Is fixed

Methods to view Video on mobile

PodCast, mobile PVR

Internet services

Applications

3G/4G cell technology

Parallel broadcast networks

© D. Tech 2010

Broadcast or Telecom?

Source: August 2009 CRTC Communications Monitoring Report

© D. Tech 2010

Video over Mobile Standards

Standards Origin Dates

ATSC-M/H ATSC T: 2006

US D: 2009

DVB-H DVB (ETSI) T: 2004

International D: 2006

Single-segment

ISDB-TDiBEG (ARIB) T: 2004

Japan, Brazil D: 2006

DMB-T/H DAB/DMB (ETSI) T: 2006

China, Korea D: 2006

Legend: T: Public Trial, D: Commercial Deployment

© D. Tech 2010

Standards per Country

© D. Tech 2010

What is DVB-H?

Built by DVB

Standardized by ETSI

Unidirectional

Based on DVB-T, Digital TV

terrestrial transport

IP packets at the Network Layer

Can be muxed with DVB-T CBR

services

Marie Josée (MJ) Drouin,

SMPTE Toronto Chapter BootCamp, June 8th, 2010

© D. Tech 2010

DVB-H Technical Review

© D. Tech 2010

DVB-T: OSI Layer 1

3

2

1DVB-T

Source: ETSI TR 102 377 v1.2.1 (2005-11)

© D. Tech 2010

DVB-T Modifications (L1)

DVB-H signaling in

TPS-Bits: Mandatory

Mandatory Signaling: Cell ID, Time Slicing

DVB-H Options using TPS bits signaling:

MPE-FEC, Interleaver depth, 4K mode

4K FFT size mode: Optional

In-depth symbol interleaver: Optional

8K interleaver for 2k and 4k modes

© D. Tech 2010

DVB-H Protocol Stack & OSI L2

DVB-H

3

2

1DVB-T

Source: ETSI TR 102 377 v1.2.1 (2005-11)

© D. Tech 2010

DVB-H Innovations (L2)

Time-slicing: Mandatory

Power reduction

MPE-FEC: Optional

C/N

Doppler

Impulse interference

© D. Tech 2010

DVB-H System

* Inspired by ETSI TR 102 377 v1.2.1 (2005-11)

IP Backbone

Video

IPMPEG4

Encoder

NIT

Video

DVB-H Receiver

IRD

DVB-T Receiver

PSI/SI

RF

RF

INTTS

RF

MPEG4

EncoderMPEG4

Encoder

H264

© D. Tech 2010

Solving the Layer 1&2 Issues

Mobility – Doppler:

4K FFT size

Power consumption:

Time Slicing

© D. Tech 2010

Doppler Effect (L1)

Source: ETSI TR 102 377 v1.2.1 (2005-11)

IRD

Mobiles

© D. Tech 2010

FFT Size Impacts (L1)

FFT size Impacts on RF performance Doppler Frequency – Mobility Echo delay – Maximum SFN radius area Channel estimation – Demodulator complexity & power Phase noise resistance – Robustness

Source: ETSI TR 102 377 v1.2.1 (2005-11) & ETSI EN 300 744 V.1.5.1 (2004-11)

OFDM parameters, 16QAM, GI 1/4, 6MHz

FFT symbol size characteristics 2K 4K 8K

Number of Carriers (K) 1705 3409 6817

Duration of symbol - Tu (µsec) 299 597 1195

Carrier Spacing - 1/Tu (Hz) 3348 1674 837

Duration of guard interval - Δ (µsec) 75 149 299

Modes, FFT size

© D. Tech 2010

Power Consumption (L2)

Source: ETSI TR 102 377 v1.2.1 (2005-11)

© D. Tech 2010

Time-Slicing (L2)

Source: ETSI TR 102 377 v1.2.1 (2005-11)

MPE Sections

EquivalentLimited by the

memory of

the receiver

© D. Tech 2010

Solving the Layer 3&4 Issues

IP Datacast: Content Delivery Protocol

(CDP)

Architecture for Convergence of Broadcast

and Mobile Services (TM-CBMS)

© D. Tech 2010

CDP OSI Layer 3

DV

B-H

3

2

1

CDP

DVB-T

Source: ETSI TR 102 377 v1.2.1 (2005-11)

© D. Tech 2010

CDP Protocol Stack (L3&4)

Source: ETSI TS 102 472 V1.1.1 (2006-06)

Return Channel

– not mandatory

3

2

1

7

4

5

6

RFC 3550

RFC 2250

RFC 3984

ISO 13818

RFC 3926

RFC 2616

ETSI

ETSI 3GPP

SMPTE 2022

Marie Josée (MJ) Drouin,

SMPTE Toronto Chapter BootCamp, June 8th, 2010

© D. Tech 2010

System Technical Review

© D. Tech 2010

Putting it together: TM-CBMS

Source: ETSI TR 102 469 v1.1.1 (2006-5)

© D. Tech 2010

Future: Wireless Billboards?

© D. Tech 2010

Conclusion: DVB-H

Fully Standardized End-to-End Service

Backward Compatible

Developed new Features for Mobiles

IP Based Service

Services are tested and rolled-out all over

the World

ATSC-M/H faces very similar complexities

Marie Josée (MJ) Drouin,

SMPTE Toronto Chapter BootCamp, June 8th, 2010

© D. Tech 2010

Thank You

mjdrouin@gmail.com