DVB-H: Time to commercialize
Mobile Monday Hong Kong March 2006 Juha Lipiainen Nokia Multimedia Mobile Media will become the 6th Medium
Mobile Media 2000’s Internet - 1990’s
Recordings - 1930’s Television - 1920’s 6 Radio - 1880’s 5
Printing press - 1400’s 4 3 2 1 Mobile TV Use Paradigms
Live MobileTV “same content for everyone at same time”
•Example: Streaming live TV service over 3G network •Example: DVB-H/IPDC based broadcast mobile TV •Example: MBMS upgrade to 3G for wider audience •Example: IP TV over WLAN Content synchronization On-demand video “taking my content with me services for later use” “specific content for me at request” Examples: •Subscription/scheduled Examples: download based video services •A mobile soap opera episode over cellular network (for off-line streamed over 3G network use) •Download music video content •Video synchronization from PC over cellular network to mobile device Urban area, Optimal environment for Mobile Broadcasting Enablers for Mobile Broadcasting & Mobile TV
Digitalization of TV Broadcasting, minimum 5 x spectrum efficiency Spectrum released for new services: Mobile TV and HDTV (Standardisation and regulation needed) + Clear market need for Mobile TV Services, content exists No success earlier with analogue portable & pocket TV: separate device, bad video quality, large antenna, no billing DVB-H mechanism, etc + Key portable technologies available (2004-…) with acceptable cost Efficient video & audio compression (H.264), integration of OFDM radio technology, low power digital signal processing, battery technology, etc. 2005 Time for Mobile TV Broadcasting
Enabling Technologies: Microelectronics Radio technologies Compression technology Display technologies Battery technologies etc.
1950 1960 1970 198 199 200 201 0 0 0 0
Enabling Technology: Transistor Tube radio Transistor radio (Mobile/Portable) IP over DVB-H technology makes TV mobile Where are we with DVB-H? Long history, much development work
Nokia 7710
First Commercial Nokia MediaScreen DVB-T Networks Concept Nokia 7700 Commercial DVB-H handsets DVB-T ratified
199 199 199 199 200 200 200 200 200 200 200 6 7 8 9 0 1 2 3 4 5 6
DVB-T networks DVB-H work started ETSI standard in UK 1998 First portable DVB-T Terminal: MediaScreen
1999 Nokia Mobile TV Solution Evolution
Nokia 7710
Nokia 7700 Open Air Interface
Mobiille TV Serrviice e-CommercMe anagementt e-CommerMceobiille TV Serrviice Managementt Mobile TV Server Solution 3.0 e-Commerce Mobiille TV Serrviice Mobile TV Server Solution 2.2 Managementt • over 15 pilots Mobile TV Server Solution 2.1 • three pilots
2003 2004 2005 2006 •Watch TuVp g oteos M4o bhiloe uwirths t hTe VNo kia N92 •Large 2.8’’anti glare screen with 16 million colours •One Key TV access •30 second replay, 30 minute recording •Always up to date Electronic Service Guide •Dedicated 4-in-1 media keys •Music player, FM radio & Visual Radio •2 MP camera Mobile TV industry structure Collaboration is key
Devices Content Aggregation Distribution Content & Applications
TV TV TV TV Broadcast network Set-Top Studios Channels Set-Top Box
Mobile TV Mobile Broadcast Mobile channels network Terminal
Cellular network DVB-H Broadcast Network Solution Architecture DVB-H Worldwide
Mobile TV Mobile Mobile Broadcast network content Mobile Broadcast network Terminal
Cellular network Consumer Expectations
Good picture and sound quality
Right selection Service of channels availability
Simplicity of use Value for money
Multimedia Device FinPilot: Does the service have future potential?
Yes - assuming that the pricing and content are in line with consumers’ expectations and needs. 100 % More than a half of the Pilot members (58 %) believe 90
that Mobile TV will become popular in the future. 80
58% 70
60
46 50
40 28 30
20 12 12 10 1 0 Most certainly Fairly Cannot say Fairly Most certainly yes certainly yes certainly no no N=466 O2 Oxford Feedback
High Satisfaction Levels • 83% satisfied or better with the service
Satisfaction Drivers • Choice of channels • High Picture and Sound Quality • Electronic Services Guide (ESG)
High Take-up Intentions •76% of triallists would take up service within 12 months at an acceptable price •This demonstrates that the majority of triallists are prepared to pay for a service Summary of Pilots: Mobile TV set to be very popular
Finland UK Spain France
Positive response to 58% believe Mobile TV 83% are satisfied with 75% would recommend 73% were satisfied with mobile TV services would be the service the service the service popular Willingness to pay for 41% 76% 55% 68% mobile TV
Acceptable monthly €10 - €5 €7 fee for mobile TV
Average daily viewing 5 to 30 minutes of 23 minutes per session 16 minutes 20 minutes Mobile TV per day on with 1 to 2 sessions per average day Peak viewing times - Mornings/lunchtime/ While commuting and Morning (9-10), midday early evenings between 7pm and 8pm (1-2) and evening (8-10)
Popular content Local programmes News, soaps, music, News, series and music News, music available through documentaries and entertainment, sport, Finnish national TV and sports documentaries, films sporting events Future Challenges Three BIG Industries Converging
Broadcasting •Big opportunity to change viewing behaviour with Mobile TV, Communication •Risk approach needed – technology • Big opportunity to increase ARPU possibly disruptive, offering producer and •Interactivity will bring data traffic into content owner new opportunities to networks distribute content directly to viewers • Mobile Tv as part of communications •Common driver for business stakeholder companies portfolio is increasing ARPU from existing content • Network asset •Content re-formatted, •No common Content Rights and ? Protection (DRM) model for Mobile TV, possible brake of category development • Interactivity
Consumer Electronic s •New device categories • Different product life cycles •Home networking market data and verified consumer expMectoavtioinnsg. Forward • Let’s put next gear on:
1. Moving forward with commerlization of DVB-H: implement real business system
1. Supply of interoperable consumer products to market
1. Work of outstanding technology/standardization issue such as: content rights, UI, discovery. Motivation for creating DVB-H • Why not use UMTS? – Not scalable for mass content delivery – For delivery of mass media content, broadcast networks should be preferred over point-to-point cellular networks • Why not use DVB-T? – Was designed for rooftop reception – Need for an efficient power saving mechanism – Inadequate impulse noise protection • Why not use DAB? – Designed for devices with similar power constraints but too narrow spectrum is assigned for data transmission
DAB = Digital Audio Broadcasting DVB-T • Terrestrial Digital Television Standard – Used in 36 countries world wide • One-to-many broadband wireless data transport – Video, audio, data and – importantly – IP packets – Scalable: cell size up to 100km (DVB-H cell size is smaller) – Huge capacity: 54 channels each 5-32Mbit/s • Shut down of analog TV will free up huge frequency capacity for DVB-T usage DVB-T = Digital Video Broadcasting - Terrestrial DVB-T (2)
• Developed for MPEG-2 stream distribution, but can basically carry any data – Flexible, has many modes, 4.98-31.67 Mbit/s @ C/N=25dB • COFDM multicarrier modulation with 2k and 8k modes – One DVB channel is ~8MHz • 1705 sub carriers (spacing: 4464 Hz) - 2k mode • 6817 sub carriers (spacing: 1116 Hz) - 8k mode – Carrier modulation: QPSK, 16 QAM or 64 QAM – Error correction: convolutional code and Salomon-Reed • Basic mode in Finland: – 64 QAM, code rate = 2/3, guard interval 1/8 – Gives 22.12 Mbits/s capCaOcFDitMy =w Chodeend OCrth/oNgo=na1l 9Fr.e2qu ednBcy Daivnisdio n8 M MultHiplzex ing channel C/N = Carrier to Noise ratio Mobile reception of DVB-T
• DVB-T includes hierarchical modes where two transport streams can be sent simultaneously – Low capacity, high capacity • DVB-T can also be used for broadcast to mobile devices, but a suitable mode have to be selected – 8k 64 QAM: < 50 km/h – 2k QPSK: > 400 km/h tolerable • A separate network for DVB-H is desired – Optimization of speed, coverage and capacity 2k, 4k or 8k and why?
• A small number of sub-carrier provides (like in 2k): – large inter-carrier spacing -> gives tolerance to the echoes affected by Doppler – short symbol duration ->limits the maximum delay of accepted echoes • A large number of sub-carriers (like in 8k): – small inter-carrier spacing but a large symbol duration • In short, the choice of the sub-carrier number has no impact on the broadcast capacity but on the trade-of between Doppler acceptance and maximum echo delays DVB-H mission
• Make it “… possible to transmit in one DVB transport stream both DVB-H and DVB-T components in such a way that existing DVB-T receivers which cannot decode the DVB-H portion are not disturbed by this DVB-H portion.” DVB-H system elements
• Time slicing for power saving – Time between the bursts gives the power saving (off time)
TS bitrate Timesliced: Not timesliced: •Service 1 •Service 4 1 2 3 1 2 3 1 2 3 1 2
Bandwidth •Service 2 •Service 3 4 Tim e • MPE-FEC for performance • 4k mode was chosen to provide mobility in medium SFNs MPE = Multiprotocoll encapsulation FEC= Forward Error Correction • Extended TPS bits for efficient signalinSgFN= Single Frequency Network IP Datacast (IPDC)
• “IP datacasting is a service where digital content formats, software applications, programming interfaces and multimedia services are combined through IP (Internet Protocol) with digital broadcasting.”
DVB-T RF in DVB-T IP-out ETS 300 744 Time Slicing MPE FEC 8k, 2k, 4k, TPS
DVB-H CODEC IPDC over DVB-H business
• New forms of multimedia enjoyment for consumers • New market opportunities for telecommunication and broadcasting industries • High bandwidth and high transmission speeds but insensitive to number of recipients attractive from a business perspective
IPDC = IP Datacast Network Design Flexibility & Signaling • Different datacast network operator and cellular network operator • Digital broadcast infrastructure • More transmission sites than normal broadcast networks required, but less than normal cellular phone networks – existing masts can be reused • Cellular networks used for payment and administrative data • Cellular network and broadcast network can share same core network Mobile OperatorUTMS ISP Core Base station DVB-T Broadcasters IP DVB-H Backbone Mux transmitter DVB-H Broadcasters Broadcast operator DVB-H features/pros
• Cost efficient delivery of broadcast content to a large audience • Low time to market • Low complexity • Not heavily affected of peak usage (during special events etc.) • Flexible transport stream sharing between DVB-T and DVB-H possible • Based on DVB-T with minimal changes • Fulfils most commercial requirements • Allows seamless handover • No adverse effect on DVB-T • IP allows encryption DVB-H features/cons
• Only IP based services possible • Reduced power saving when total bit rate for DVB-H services is very low (no big “bursts” possible) Mobile Terminal
• FE = Front End, contains radio receiver and demultiplexor
FE
Media decoder WLAN CPU Display
Cellular Link Power consumption and handover • IP encapsulation allows sending the data in bursts to the mobile station and this saves energy (battery power) • Power consumption and handover – 2 Mbit buffer – Handover possible during off time (services can be used even if the terminal has moved during off time) C/N Performance
• RS decoder utilizing the Time Slice buffer • Virtual time interleaver • 10% TS PER tolerated • Doppler and CN improved in mobile and portable • Impulse interference tolerance improved • Possibility to vary the level of robustness Nokia’s 7700 with support for DVB- H
“The Nokia 7700 will support the Nokia Streamer SU-6 accessory, the first mobile IP Datacast receiver designed to demonstrate the mobile phone television experience using the DVB-H network. The Nokia Streamer can be attached to the Nokia 7700 like a battery pack, and will be used in pilot projects to showcase the future of digital broadcasting on mobile devices.”
• DVB-H – digital TV for handhelds? Jukka Henriksson, Nokia • Content Distribution Using Wireless Broadcast and Multicast Communication Networks. Janne Aaltonen, Thesis for Degree of Doctor, Tampere University of Technology • IP Datacasting Technology - Bringing TV to the Mobile Phone, White Paper