FORUM ON NEXT GENERATION STANDARDIZATION Colombo Sri Lanka

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 Colombo, Sri Lanka, 7 -10 April 2009

Contents Application Challenges Security Standardization and Standards Adaptation Colombo, Sri Lanka, 7 -10 April 2009 2

Applications Mobile Television Information dissemination Weather, traffic, airline schedule, stock, emergency warnings Telemetry data collection for remote monitoring / surveillance Colombo, Sri Lanka, 7 -10 April 2009 3

Convergence at all Layers Broadband Network Living Room - IPTV Seamless Session Transfer Mobile Network On the Move – Mobile TV Colombo, Sri Lanka, 7 -10 April 2009 4

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 and Content Security Colombo, Sri Lanka, 7 -10 April 2009 5

Access Network In-band Streaming over GERAN / UTRAN (Unicast) Multimedia Broadcast / Multicast Service over UTRAN (MBMS) Out-of-band Broadcasting Technologues DVB-H Media. FLO 1 Seg (extension of ISDB-T) T-DMB / S-DMB Unidirectional content flow Uses cellular network for reverse channel / interactivity Colombo, Sri Lanka, 7 -10 April 2009 6

Streaming / Unicast SGSN GGSN Content Streams Core Network SGSN As many number of streams, end-to-end, as number recipients Colombo, Sri Lanka, 7 -10 April 2009 7

Multicast /Broadcast SGSN GGSN Content Streams Core Network SGSN Single stream per content, end-to-end Colombo, Sri Lanka, 7 -10 April 2009 8

Out-of-band Broadcast Channel Broadcast Network Content Transmitter Reverse / Interactivity Channel Colombo, Sri Lanka, 7 -10 April 2009 BTS / Node B Cellular Network (GSM/GPRS/3 G) Interaction Processing and Subscriber Management / Charging System Interface 9

Choice of Technology Mode /Technology Typical Applications Streaming (GPRS LTE) • • MBMS (3 G LTE) • • Broadcast Technologies (DVB-H, Media. FLO, 1 Seg, T/S-DMB) • • Merit Profile On-demand Media retrieval Real-time P 2 P Datacasting • Media delivery (short duration – push) P 2 P and P 2 MP Datacasting • Media delivery (long duration / continuous) Infotainment • • • Colombo, Sri Lanka, 7 -10 April 2009 Taxing on the cellular access network Less costly Roaming possible Reliable delivery through FLUTE & file-repair procedure for data casting (MBMS only) No capacity impact on cellular network Requires an overlay broadcast network No roaming 10

Choice of Technology Colombo, Sri Lanka, 7 -10 April 2009 Source: Ericsson Presentation Material 11

Multimedia Broadcast Multicast Service (MBMS) MBMS defined in 3 GPP 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 Qo. S 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 Colombo, Sri Lanka, 7 -10 April 2009 12

MBMS over 2 G/3 G UMTS/HSDPA n Elements needing upgrades § SGSN / GGSN § UTRAN / GERAN § User Equipment n New Network Elements § BM-SC (Broadcast Multicast Service Centre) n Existing Network Limitations § Per user GTP tunnels for multicast content § Inefficient use of radio resources § Cell broadcast – low bit rate services only Colombo, Sri Lanka, 7 -10 April 2009 n Enhancements from MBMS § New multicast transport channel defined § PTM transport over HSDPA § Intelligent switching to and from PTP PTM modes Ref: 3 GPP TS 23. 246 13

MBMS over 3 G LTE n Improvements offered by e. MBMS § 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 § 7 k. Hz sub-carrier defined for e. MBMS Colombo, Sri Lanka, 7 -10 April 2009 Ref: 3 GPP TS 36. 300 14

DVB-H Network Content Ingest IP Encapsulator Broadcast Backhaul Network Transmitter DVB-H Service Manager Interaction Manager Cellular PS Network Subscriber Management & Charging System Colombo, Sri Lanka, 7 -10 April 2009 15

Interactivity for DVB-H Broadcast Channel (One way flow) DVB-H Service Manager Cellular PS Channel • Interactions • On-demand content • Push content Colombo, Sri Lanka, 7 -10 April 2009 Adopted from Nokia Presentation Material 16

Comparison of Media Broadcast Technologies MBMS DVB-H DVB-SH Media. FLO 1 Seg / ISDB-T T-DMB Standard Open / 3 GPP Open / DVB. org Open/ DVB. org Proprietary / Qualcomm Open / ARIB (Japan) Open / South Korea Frequency 2 GHz VHF, UHF, Lband, S-band VHF, UHF S-band, Kuband Channel Bandwidth 5 MHz 5, 6, 7, 8 MHz 1. 7, 5, 6, 7, 8 MHz 6 MHz 432 k. Hz 1. 538 MHz 25 MHz Spectral Efficiency 0. 15~0. 3 bps/Hz 0. 45~1. 86 bps/Hz 0. 49~2. 15 bps/Hz 0. 47~1. 87 bps/Hz Modulation WCDMA OFDM COFDM, TDM / COFDM OFDM Error Correction Turbo, Raptor code Convolutional , Reed. Solomon Turbo, Convolutional Turbo, Reed. Solomon Convolutional , Reed. Solomon Data rate in real scenario Up to 1. 5 Mbps Up to 15 Mbps 17. 2 Mbps Up to 15 Mbps 416 kbps Up to 1. 4 Mbps Colombo, Sri Lanka, 7 -10 April 2009 0. 2~1. 2 bps/Hz Compiled from published literature and Internet 17

Mobile TV Standard Adaptation Colombo, Sri Lanka, 7 -10 April 2009 18

Security Subscription Authentication & Authorization Encryption of content Key Management System Colombo, Sri Lanka, 7 -10 April 2009 19

MBMS Security Architecture n User Authentication & Authorization n Traffic Protection § Using HTTP Digest § Streaming using RTP/SRTP n User Authentication & Authorization § Data downloads using FLUTE § GAA / GBA used for key agreement § Distribution through MIKEY Colombo, Sri Lanka, 7 -10 April 2009 Ref: 3 GPP 33. 246 20

Service Purchase & Protection (SPP) for DVB-H Device Based SIM based Colombo, Sri Lanka, 7 -10 April 2009 21

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 Colombo, Sri Lanka, 7 -10 April 2009 22

OSF Approach KDA Encoder + Scrambler Control Word (CW) IPE Modulator KMS Device Agent ECMs EMMs CA Applet CA Control System ECM: Entitlement Control Message EMM: Entitlement Management Message KMS: Key Management System Colombo, Sri Lanka, 7 -10 April 2009 Adopted from Irdeto Presentation Material 23

OMA BCAST Approach Encoder + Scrambler IPE Modulator BCAST Client STKM BCAST SIM LTKM BCAST Server STKM: Short-term Key Message LTKM: Long-term Key Message Colombo, Sri Lanka, 7 -10 April 2009 Adopted from Irdeto Presentation Material 24

Conclusion Challenge for standardization to achieve global interoperability Challenge for the operators is to select the right technology mix to delight the customer Colombo, Sri Lanka, 7 -10 April 2009 25