Multimedia Streaming to Mobile Devices

Yi LiuMarch 2008

Delivery of Broadcast Services in 3G Networks

Phone call ?

SMS and MMS ?

Web browsing ?

Watch TV !!

It is predicted mobile data traffic will exceed voice traffic by the year 2010.

More and more cell phone will support Mobile TV natively. (Nokia N77 , N92, Samsung SGH-P900)

Traditional TV:Fixed schedule, same content viewed by many user at the same timeSpend several hours per day

Mobile TV:Users’ own schedule, except live events of high interest. (sports, concerts etc)Spend around 5 minutes per day

Require quick access to wanted TV content without wasting time by browsing through the available channels

Viewing peaks are less likely, except for special events

Content programs need to change, short clips are more welcomed

Since 2004, mobile TV was launched over the existing 2.5G or 3G network

At that time, there is no 3G broadcast technology

Use 3G unicast to deploy Mobile TV services

Use H.264 video codec and special QoS support

Advantage: Network resource are only consumed when a user is actively using mobile TV service. The network can optimize the transmission for each user individually.

Disadvantage: Unfavorable scaling behavior if there are many user watching TV at the same time.

MBMS (multimedia broadcast multimedia service)

Definition:A broadcast service that can be offered via existing GSM and UMTS cellular networks

Broadcast advantage: Cope with high number of simultaneously watching mobile TV user

BroadcastNo optimization on resource usage

Enhanced Broadcastcounting/recounting

Multicastjoining up state

Streaming delivery methodContinuous transmissions like Mobile TV services.

Download delivery method"Download and Play" services.

3G MBMS evolutionUse WCDMA

Up to 3 times capacity increase

Use MIMO, which is standardized in 3GPP----multiple input multiple output.

3G unicast revolution.Provide further increased capacity for unicast streaming.

1. To make the bearer choice invisible to both the end user and the service provider.

2. To provide a good end-user experience in the situation where the access type needs to be changed while the service is used.

Delivery of Broadcast Services in 3G NetworksFrank Hartung   Uwe Horn   Jrg Huschke   Markus Kampmann   Thorsten Lohmar   Magnus Lundevall  

http://en.wikipedia.org/wiki/Multimedia_Broadcast_Multicast_Service

Multimedia Broadcast/Multicast Service User Services; Stage I 3GPP TS22.246

Any question?