Upload
mj-drouin
View
979
Download
3
Tags:
Embed Size (px)
DESCRIPTION
Presentation done during SMPTE Toronto Chapter 2-day BootCamp training on June 8th, 2010
Citation preview
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