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Multimedia Streaming to Mobile Devices

Multimedia Streaming to Mobile Devices. Yi Liu March 2008. Delivery of Broadcast Services in 3G Networks. What we can do with cell phone?. Phone call ? SMS and MMS ? Web browsing ? Watch TV !!. TV is regarded as a key service for mobile devices.

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Multimedia Streaming to Mobile Devices

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  1. Multimedia Streaming to Mobile Devices Yi Liu March 2008 Delivery of Broadcast Services in 3G Networks

  2. What we can do with cell phone? • Phone call ? • SMS and MMS ? • Web browsing ? • Watch TV !!

  3. TV is regarded as a key service for mobile devices • 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)

  4. Traditional TV VS Mobile TV • 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

  5. Several changes to mobile TV • 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

  6. Mobile TV history • 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

  7. 3G Unicast • 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.

  8. Introduce 3G broadcast--MBMS • 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

  9. MBMS

  10. MBMS Bearer Service • Broadcast No optimization on resource usage • Enhanced Broadcast counting/recounting • Multicast joining up state

  11. MBMS User Service • Streaming delivery method Continuous transmissions like Mobile TV services. • Download delivery method "Download and Play" services.

  12. 3G evolution • 3G MBMS evolution Use WCDMA Up to 3 times capacity increase Use MIMO, which is standardized in 3GPP----multiple input multiple output.

  13. 3G evolution • 3G unicast revolution. Provide further increased capacity for unicast streaming.

  14. A high level architecture, hybrid

  15. Challenge of the architecture 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.

  16. Reference • 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

  17. Q&A • Any question? 

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