1 / 17

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.

Download Presentation

Multimedia Streaming to Mobile Devices

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  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? 

More Related