Yi Liu March 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  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 time Spend 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

 Broadcast No optimization on resource usage  Enhanced Broadcast counting/recounting  Multicast joining up state

 Streaming delivery method Continuous transmissions like Mobile TV services.  Download delivery method "Download and Play" services.

 3G MBMS evolution Use 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 Networks Frank Hartung Uwe Horn Jrg Huschke Markus Kampmann Thorsten Lohmar Magnus Lundevall  oadcast_Multicast_Service  Multimedia Broadcast/Multicast Service User Services; Stage I 3GPP TS22.246

 Any question?