Delivery of Broadcast Services in 3G Networks Yi Liu March 2008 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 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 http://en.wikipedia.org/wiki/ Multimedia_Broadcast_Multicast_Service
Multimedia Broadcast/Multicast Service User Services; Stage I 3GPP TS22.246 Any question?
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