interactivity in mobile tv

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


DVB-H, MBMS, FLO, DAB, ISDB-T TDMA, CDMA, GSMRadio Layer

System Layer



Generic Service Generic Service Generic Service


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


DVB-H, MBMS, FLO, DAB, ISDB-T

IPDC, MediaFLO, DMB-T, MBMS ISDB-T

TDMA, CDMA, GSMRadio Layer

System Layer



Scheduled Streaming Filecasting Interactivity


Service Discovery Security Purcase & Billing

Business Environment of Mobile Broadcasting

Business Environment





System Layer






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




BroadcastService Provider

ContentAggregator

UserContentProvider

Telefónica Móviles

E-CommerceProvision

Case Barcelona

O2

Nokia, Sony




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





System Layer






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


•Simulcasting

•Enhanced Simulcast

•Mobile TV dedicated content

•Examples of Interactive Services

( from Nokia 7710 during Finnpilot)

( from Nokia 7710 during Finnpilot)

( concept service)


•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

interactivity in mobile tv

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