interactivity in mobile tv
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Interactivity in Mobile TV. Tom Sederlöf. Seminaariesitelmä: TKK: Networking business Työn valvoja: Heikki Hämmäinen Työn Ohjaaja: Tkt Markus Lindqvist. Nokia Multimedia. 14.02.2006. Introduction Layered Model Of Mobile Broadcasting Radio Layer System Layer Business Environment - PowerPoint PPT PresentationTRANSCRIPT
Interactivity in Mobile TV
Tom Sederlöf
14.02.2006
Seminaariesitelmä:TKK: Networking business
Työn valvoja: Heikki HämmäinenTyön Ohjaaja: Tkt Markus Lindqvist
Nokia Multimedia
•Introduction•Layered Model Of Mobile Broadcasting•Radio Layer•System Layer•Business Environment•Interactivity•Interactivity in Mobile TV •Conclutions
Motivation:• Costs transimitting broadcast type of data is extremely high in point-to-point/cellular networks• Mobile broadcasting technologies enable the broadcasting to mobile devices• TV is the most commonly spread broadcast service• When integrating the broadcast based TV service to mobile phones, a single device uses the one-to many and point-to-point networks
Scope:• Scheduled broadcast services• Main focus on TV and interactive services• Presened analysis applicable also to other non-TV broadcast services
Methodoly:• Literature survey • Non structured open discussions with experts
Introduction
Layered Model of Mobile Broadcasting
• Developed for the thesis • Previous studies on mobile broadcasting base on vertical approach• Model used as framework throughout the analysis• Each layer studied separately• Main focus on ”Client Application Layer”, especially on Mobile TV and possibilities to integrate interactive service components to it
Terminal Applications
Mobile Broadcastin RadioTechnologies
Cellular Radio TechnologiesRadio Layer
System Layer
Client Application Layer
BidirectionalUnidirectional
Generic Service Generic Service Generic Service
Generic Services Interface
Business Environment
service enabler service enabler service enabler
Radio Layer of Mobile Broadcasting
Terminal Applications
DVB-H, MBMS, FLO, DAB, ISDB-T TDMA, CDMA, GSMRadio Layer
System Layer
Client Application Layer
BidirectionalUnidirectional
Generic Service Generic Service Generic Service
Generic Services Interface
service enabler service enabler service enabler1. Digital video broadcasting for Handheld (DVB-H)2. Multimedia Broadcast Multimedia Service (MBMS)3. Terrestrial – Digital Multimedia Broadcasting (T-DMB)4. Integrated Services Digital Broadcast (ISDB-T)5. Forward Link Only ( FLO )
•Five different major mobile broadcasting technologies
ISDB-T T-DMB DVB-H FLO*
Region Japan Korea Europe, USA USA
Standard Open Open Open Propriatary
Modulation/Coding OFDM, convolutional, RS OFDM, convolutional, RS OFDM, convolutional, RS OFDM, turbo, RS
Time Domain Power reduction No No Yes Yes
Frequency Domain Power reduction Yes No No Yes
Non-real time content delivery No No Yes Yes
Service Availability Today Today Today 2006/2007
Handset Availability Today Today Today 2007
Bandwidth Diversity 430kHz 1.5MHz 5-8MHz 5-8MHz
Useful Bitrate 660kbps/segment 1,5Mbps 15Mbps 12Mbps
Spectrum Band 470-670MHz 174-260MHz 470-862MHz 450-3000MHz
Antenna External External Internal Internal
Video Watch Time** unknown 2 h 4 h 3.8 h
• Broadcasting technologies provide the high data rate downlink and existing cellular networks the uplink needed for interacting
System Layer
Two different system level solutions1. IP datacasting (DVB-H)2. MediaFlo (FLO)
Service Enablers of System Layer 1. Service Discovery2. Security 3. Purchase & Billing
Generic Services provided by System Layer1. Streaming2. FileCasting3. Intractivity
Terminal Applications
DVB-H, MBMS, FLO, DAB, ISDB-T
IPDC, MediaFLO, DMB-T, MBMS ISDB-T
TDMA, CDMA, GSMRadio Layer
System Layer
Client Application Layer
BidirectionalUnidirectional
Scheduled Streaming Filecasting Interactivity
Generic Services Interface
Service Discovery Security Purcase & Billing
Business Environment of Mobile Broadcasting
Business Environment
Terminal Applications
DVB-H, MBMS, FLO, DAB, ISDB-T
IPDC, MediaFLO, DMB-T, MBMS ISDB-T
TDMA, CDMA, GSMRadio Layer
System Layer
Client Application Layer
BidirectionalUnidirectional
Scheduled Streaming Filecasting Interactivity
Generic Services Interface
Service Discovery Security Purcase & Billing
Nokia
TeliaSonera, elisa
YLE, MTV3, NelonenElisa
Digita
Mobile Network Operator
Mobile Service Operator
BroadcastNetwork Operator
DatacastService Provider
ContentAggregator
ContentProvider
User
E-CommerceProvision
Case Helsinki Case Oxford
Generic business model of mobile broadcasting- presents the functional roles needed in MB- Companies will act in one or more roles
Division of functional roles in mobile TV pilots :
Abertis Telecom Nokia
Mobile Network Operator
Mobile Service Operator
BroadcastNetwork Operator
BroadcastService Provider
ContentAggregator
UserContentProvider
Telefónica Móviles
E-CommerceProvision
Case Barcelona
O2
Nokia, Sony
Mobile Network Operator
Mobile Service Operator
BroadcastNetwork Operator
DatacastService Provider
ContentAggregator
UserContentProvider
Arqiva
E-CommerceProvision
Cellular Network Operation
Mobile Service Provision
content
interaction,metadata
Advertisment
BroadcastNetwork Operation
DatacastService Provision
ContentProvision
UserContentAggregation
E-CommerceProvision
Content House
TV Broadcaster
Cellular Operator
Virtual Operator
Broadcast nw. Operator
Content Provisioning Core
Content Aggrecation Core Core Potential Potential
Datacast Service Operation Potential Potential Strengths Strengths
Broadcast Nw. Operation Strengths Core
E-Commerce Service Provision Strengths Strengths Strengths Strengths
Cellular Service Provision Core Core
Cellular Network Operation Core
HelpDesk Service Provision Potential Core Strengths Strengths
Terminal Distribution Core Potential Potential
Business Environment of Mobile Broadcasting
•The mapping between functional business roles and actors
Terminal Applications
DVB-H, MBMS, FLO, DAB, ISDB-T
IPDC, MediaFLO, DMB-T, MBMS ISDB-T
TDMA, CDMA, GSMRadio Layer
System Layer
Client Application Layer
BidirectionalUnidirectional
Scheduled Streaming Filecasting Interactivity
Generic Services Interface
Service Discovery Security Purcase & Billing
Interactivity
•Interactive services in ”normal TV”
1. Pre-existing interactivity2. 24/7 services3. Enchanced TV
•Terminal Constraints in Mobile TV services
1. Screen Size2. Input Device3. Native Application Set
Mobile TV Terminals
•Interactive services in mobile TV
1. Simulcasting2. Enhanced simulcast3. Mobile TV dedicated content
Interactivity in Mobile TV
•Simulcasting
•Enhanced Simulcast
•Mobile TV dedicated content
•Examples of Interactive Services
( from Nokia 7710 during Finnpilot)
( from Nokia 7710 during Finnpilot)
( concept service)
Interactivity in Mobile TV
•Presentation of interactive services
1. In a spesific ”banner area” beside picture2. On top of picture
Yes No
Poll :Should she marry him ?
•Services should be drawn to the screen in terminal, not burnt to the picture
( concept service)( concept service)
Conclutions
Complexity of Terminals
Complexity ofSystem
Interactive MTV
Complexity of Business Environment
MTV dedicated
TV and non-TV services
MTVSimulcast
Enhanced Simulcast
•Services provided by mobile broadcast have affect to three dimensions,
•When the broadcasted content is simulcast, a consistensy on how the business environment is set up and how the functional roles are adopted by actors involved within the busines can be seen, but as the broadcasted content diversifies to include interaction and non-TV content, so do the business models.
Conclutions
•The co-operation of actors already posessing relevant competences, mostly today’s broadcasting and telecommunication operators, is most likely seen in vast majority of business models of mobile TV.
•It is likely that there will not be a clear winner technology in mobile TV on global level but the mobile broadcasting market will remain geographically fragmented.
•Including interactivity to mobile TV has a potential but exploiting it successfully requires proper implementation both from broadcast system and terminal side, i.e. integrating the interactive services to the broadcast feed and ensuring the ease of use in terminals.
•Interactive services provided in set-top-boxes are not suitable for mobile TV as such, but some of the interactive service types are applicable to mobile TV.
•Interaction should be introduced to mobile TV through enhanced simulcast, in practice this meansembedding services like voting, links, chats, gambling and gaming to the broadcasted programming.
•Because of the lack of empirical data on interactive services in mobile TV further study is needed. The upcoming mobile TV trials and commercial solutions give the possibility to experiment with interactive mobile TV and will provide data that can be used in further studies.
Thank You
Tom SederlöfNokia, Multimedia
Content Provider
Service System
IPE
IPEmanager
2G/3G2G/3G
E-Commerce
InternetInternet
MulticastInternet
MulticastInternet
Interactive Services
Stream Server
Terminal
BTS
SGSN
SMSC BSC
GGSN
InteractionServer
Example implementation of MB systemcapable of interaction