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Multicast in the Mobile Environment and 3G

Multicast in the Mobile Environment and 3G. April 27, 2005 T-110.456 Next Generation Cellular Networks Tommy Back. Content. Introduction Multimedia Broadcast Multicast Service Background Concept Services and applications System architecture Standardization Conclusion. Introduction.

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Multicast in the Mobile Environment and 3G

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  1. Multicast in the Mobile Environment and 3G April 27, 2005 T-110.456 Next Generation Cellular Networks Tommy Back

  2. Content • Introduction • Multimedia Broadcast Multicast Service • Background • Concept • Services and applications • System architecture • Standardization • Conclusion

  3. Introduction • Multicasting • IPDC and MBMS • Benefits • Versus unicast • Versus broadcast • Interesting for mobile phone networks • Efficient delivery of content to users • Adds complexity to the network

  4. Multimedia Broadcast Multicast ServiceBackground • Noted benefits by 3GPP • Release 99 • Cell Broadcast Service (CBS) • IP Multicast • No real benefits on bearers • New concept was required

  5. Multimedia Broadcast Multicast ServiceConcept (1/3) • MBMS standardization work • Enables efficient unidirectional p-t-m data delivery • 3GPP Release 6 • Two modes • Broadcast mode • Multicast mode

  6. Multimedia Broadcast Multicast ServiceConcept (2/3) • MBMS broadcast • Service announcement • Session start • MBMS Notification • Data transfer • Session stop

  7. Multimedia Broadcast Multicast ServiceConcept (3/3) • MBMS multicast • Subscription • Service announcement • Joining • Session start • MBMS Notification • Data transfer • Session stop • Leaving

  8. Multimedia Broadcast Multicast ServiceServices and applications • MBMS does not provide any services • MBMS can deliver different types of media: video, audio, text • Two categories for multicast mode • Hotspot area • Larger network area • Examples: football game, news update

  9. Multimedia Broadcast Multicast ServiceSystem architecture • Efficient resource usage • New network element: BM-SC • Core network point-to-multipoint • GTP tunnels: GGSN-SGSN and SGSN-RAN • RAN more complex • Needs to decide: p-t-p or p-t-m on bearers

  10. Standardization • MBMS standardization started 2001 • Working item for many 3GPP technical specification groups • System Aspects (SA) • Radio Access Networks (RAN) • Core Network (CN) • Continuously evolving into new releases

  11. Conclusion • MBMS divided into two modes • MBMS broadcast • MBMS multicast (hotspot/larger area) • Efficient unidirectional p-t-m data delivery • MBMS enables new possibilities for services • Standardization work is ongoing

  12. Thank you!

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