Real-time Data Streaming – The Next Generation

1. FORUM ON NEXT GENERATION STANDARDIZATION (Colombo, Sri Lanka, 7-10 April 2009) Real-time Data Streaming – The Next Generation Pradeep de Almeida Chief Technology Officer Dialog Telekom PLC, Sri Lanka pradeepdea@dialog.lk

2. Contents • Application • Challenges • Security • Standardization and Standards Adaptation

3. Applications • Mobile Television • Information dissemination • Weather, traffic, airline schedule,stock, emergency warnings • Telemetry data collection forremote monitoring / surveillance

4. Convergence at all Layers Broadband Network Living Room - IPTV Seamless Session Transfer Mobile Network On the Move – Mobile TV

5. Streaming Content Delivery to Mobile and Portable Devices • Core Network • IP Core Network supports real-time traffic in Unicast, Multicast and Broadcast modes • Challenge is in the Access Network • Bandwidth / Capacity • Quality of Service • Service and Content Security

6. Access Network • In-band • Streaming over GERAN / UTRAN (Unicast) • Multimedia Broadcast / Multicast Service over UTRAN (MBMS) • Out-of-band • Broadcasting Technologues • DVB-H • MediaFLO • 1 Seg (extension of ISDB-T) • T-DMB / S-DMB • Unidirectional content flow • Uses cellular network for reverse channel/ interactivity

7. Streaming / Unicast SGSN GGSN Content Streams Core Network SGSN As many number of streams, end-to-end, as number recipients

8. Multicast /Broadcast SGSN GGSN Content Streams Core Network SGSN Single stream per content, end-to-end

9. Out-of-band Broadcast Broadcast Channel Broadcast Network Content Transmitter Cellular Network (GSM/GPRS/3G) BTS / Node B Reverse / Interactivity Channel Interaction Processing and Subscriber Management / Charging System Interface

10. Choice of Technology

11. Choice of Technology Source: Ericsson Presentation Material

12. Multimedia Broadcast Multicast Service (MBMS) • MBMS defined in 3GPP as “a point-to-multipoint (PTM) downlink bearer service for IP data in the PS domain” offering high speed data rates up to 256 kbit/s • MBMS Features and Services • Efficient use of Radio & Core Network Resources • PTM Broacasting and Multicasting Capability • Different QoS for each Media Session • Error protection (ex. interference, cell changes etc.) • Synchronization between media sessions • Service Interworking (MBMS with e.g. MMS etc) • Streaming over RTP / SRTP • Download over FLUTE

13. MBMS over 2G/3G UMTS/HSDPA Elements needing upgrades SGSN / GGSN UTRAN / GERAN User Equipment New Network Elements BM-SC (Broadcast Multicast Service Centre) Existing Network Limitations Per user GTP tunnels for multicast content Inefficient use of radio resources Cell broadcast – low bit rate services only • Enhancements from MBMS • New multicast transport channel defined • PTM transport over HSDPA • Intelligent switching to and from PTP PTM modes Ref: 3GPP TS 23.246

14. MBMS over 3G LTE Ref: 3GPP TS 36.300 • Improvements offered by eMBMS • Better performance from OFDM SFNs • Combining from synchronized cells • Increased throughput from higher data rates • Reduced interference, increased receive power • Carrier sharing for broadcast/multicast and unicast is more practical • 7kHz sub-carrier defined for eMBMS

15. DVB-H Network Content Ingest IP Encapsulator Broadcast Backhaul Network Transmitter DVB-H Service Manager Interaction Manager Cellular PS Network Subscriber Management & Charging System

16. Interactivity for DVB-H Broadcast Channel (One way flow) DVB-H Service Manager DVB-H Service Manager • Cellular PS Channel • Interactions • On-demand content • Push content Adopted from Nokia Presentation Material

17. Comparison of Media Broadcast Technologies Compiled from published literature and Internet

18. Mobile TV Standard Adaptation

19. Security • Subscription • Authentication & Authorization • Encryption of content • Key Management System

20. MBMS Security Architecture • Traffic Protection • Streaming using RTP/SRTP • Data downloads using FLUTE Ref: 3GPP 33.246 • User Authentication & Authorization • Using HTTP Digest • User Authentication & Authorization • GAA / GBA used for key agreement • Distribution through MIKEY

21. Service Purchase & Protection(SPP) for DVB-H Device Based SIM based

22. SIM Based Security • OSF is driven by the broadcast industry • Standards specified by DVB.org • Based on conventional Conditional Access System (CAS) for digital television broadcasting • Keys are broadcasted over broadcast media • The Key Management System (KMS) is vendor specific • OMA BCAST is driven by the telco industry • OMA (Open Mobile Alliance) specified • KMS is specified • Keys are delivered over cellular mobile network

23. OSF Approach Control Word (CW) KDA KMS Device Agent Encoder + Scrambler IPE Modulator ECMsEMMs CA Applet CA Control System ECM: Entitlement Control Message EMM: Entitlement Management Message KMS: Key Management System Adopted from Irdeto Presentation Material

24. OMA BCAST Approach Encoder + Scrambler BCAST Client IPE Modulator STKM BCAST SIM LTKM BCAST Server STKM: Short-term Key Message LTKM: Long-term Key Message Adopted from Irdeto Presentation Material

25. Conclusion • Challenge for standardization to achieve global interoperability • Challenge for the operators is to select the right technology mix to delight the customer