Presenters: Sumanta Saha Gorkem Cakmak Xirui Wang

Transcription

1 Presenters: Sumanta Saha Gorkem Cakmak Xirui Wang

2 Overview IPDC: IP Datacast Sumanta Saha 3G multicast XiruiWang Comparison and business models GörkemCakmak

3 IPDC: Overview Definition Need for IPDC IPDC Network architecture Underlying technology Practical implementation example

4 IP Datacast (IPDC): Definition According to IPDC Forum: IP Datacasting is a broadcast technology which enables cost effective and efficient distribution of digital content to mass audiences. Technically, it makes use of the DVB networks to broadcast any IP based data. Intuitively: It is a broadcasting technology focusing digital media on top of IP. IPDC targets to broadcast digital media as well as other services such as file, games, computer programs on top of IP, independent of access networks of the recipients.

5 Why IPDC? From Operators point of view: Cost effective Efficient way to reach mass people From Content Providers point of view: Opens new way to reach mass market Creates new business opportunities for new products From Consumer point of view: New way to access services using various terminals Uninterrupted service over various access networks

6 IPDC Layman s Architecture Ref: IPDC whitepaper, Nokia Corp.

7 IPDC Reference Architecture Interactive Network Content Creation Service Application Service Managem ent Terminal Broadcast Network Adapted from: M Kornfeld, G may, DVB H and IP datacast Broadcast to handheld devices, IEEE Transactions on Broadcasting

8 Content Delivery Protocols

9 Content Delivery Protocols (Contd.) For convergence among bearer technologies, IPDC uses IP in network layer Bearer Technologies IP UDP Uses UDP as transport layer protocol due to its lightweight fast service RTP Source Coding Source Coding FLUTE/ALC Coding Encapsulation Real Time Content File Based Content ESG

10 Content Delivery Protocols (Contd.) IPDC targets to deliver variety of service, such as, Video on demand, files, programs, games UDP is not enough Several standard helper protocols are used RTP for streaming data FLUTE for file data Bearer Technologies RTP Source Coding Real Time Content IP UDP Source Coding File Based Content FLUTE/ALC Coding Encapsulation ESG

11 Electronic Service Guide (ESG) Metadata about the content Informs user about the service available Informs terminal about access rights Very flexible: allows large number of possibilities such as description, clipart, trailers, related content links Uses PSI/SI tables of DVB T underneath

12 Underlying Bearer technology ATSC DVB T DVB H DVB SH ISDB T

13 DVB T Developed by Digital Video Broadcasting (DVB) group Stands for Digital Video Broadcasting Terrestrial Popular broadcasting method for digital terrestrial TV Transmits in MPEG transport stream using OFDM

14 DVB H Spin off of DVB T suitable for handheld devices Dominating underlying technology for IPDC 5, 6, 7 and 8 MHz bandwidth can be used Expects IP as upper layer protocol Includes several diversions from DVB T to support handheld devices

15 DVB H (Contd.) DVB H is IP based. It accepts IP packet and encapsulates it in DVB way (MPE=Multi Protocol Encapsulation) Two main features of DVB H Time Slicing Sends data in high rate bursts, in between sleep mode Resulting power saving can be more than 90% MPE FEC Extra forward error correction for mobile environment (For extra enthusiastic radio guys) Combination of Reed Solomon code and extensive time interleaving with flexible configuration possibilities

16 DVB H Mobility Two types of handover Passive: No interactivity channel. UA decides by assessing the quality of channel and PSI/SI channel Active: Interactivity channel required. IPDC subsystem offers handover. UA agrees. Time slicing brings new opportunity for handover Low power state can be used without disturbing user Makes smooth handover possible even with single receiver frontend

17 IPDC deployment in Finland

18 3G Multicast Sub Agenda Advantages 3GPP2 BCMCS 3GPP MBMS

19 Advantages Enhanced Efficiency Optimized Performance Effective Distribution

20 3GPP2 BCMCS Broadcast and Multicast Services A multicast for mobile solution for CDMA2000 or WCDMA networks Flexible common radio channel suitable for point to multipoint and broadcast traffic. EBCMCS & Media FLO

21 BCMCS Scenario

22 BCMCS Network Structure

23 3GPP MBMS Multimedia Broadcast/Multicast Service Multicast technology in development within the 3GPP and is available for UMTS architecture. UMTS release 6 Two Proposed Architecture New elements such as Broadcast Multicast Serving Center (BM SC) and new procedures in UMTS network.

24 Multicast Traffic Path Before MBMS Cell Broadcast Service CBS

25 With Unicast GTP Tunnels

26 With Multicast GTP Tunnels

27 MBMS Technical Feature Split into the MBMS Bearer Service and the MBMS User Service The MBMS Bearer Service includes a Multicastand a Broadcast Mode. The MBMS Bearer Service uses IP Multicast addresses for the IP flows.

28 MBMS Broadcast Mode A single source to multiple terminals in the associated broadcast service area. Broadcast Services = Push type Services

29 MBMS Multicast Mode Areturn channel is required for interaction procedurals.

30 MBMS Technical Feature GERAN MBMS offers between 32kbit/s and 128kbit/s. Up to 4 GSM Timeslot may be used for one MBMS bearer in downlink direction. UTRAN MBMS offers up to 256kbit/s per MBMS Bearer Service and between 800kbit/s and 1.7Mbit/s per cell/band. Multicast switch threshold: 5 10 terminals

31 MBMS Architecture

32 Two initiatives are on the track IPDC Internet Protocol Datacast vs. MBMS Multimedia Broadcast Multicast Service Different backgrounds digital television broadcast and third generation cellular telecommunications We shall provide a basic system reference model to compare architectural aspects Reference model of a generic end to end multicast system fits with a business model

33 The 3 C s business approach for the reference model Content Connection Consumption Business model deploys each of these domains separately or in a group Content provider operates a streaming server Service provider aggregates all these streams together.

34 This model of a generic end to end system can be used as a baseline to compare with IP datacast and MBMS systems

35 Definition: Enables programmed delivery of a broad selection of continuous mass media services over wide area. IPDC vs. MBMS Definition: Efficient delivery of point tomultipoint services for download and streaming. MBMS optimizes p t p services that are delivered to several receivers simultaneously. Service example: 20 TV channels for mobile device available country wide Broadcast VoD Implementation: Networks: DVB S, ISDB T, DVB T, DVB H, DVB SH ATSC, DAB radio technologies. New elements: Service system and IP encapsulator. Service example: News portal stored in the terminal updated every hour Multicast Mode: Hot spot, large network area Broadcast Mode Implementation: Networks: Release 6 software updates required for GGSN, SGSN, RNC and Node B. New element: BM SC required.

36 IPDC vs. MBMS MBMS IPDC Infrastructure Receiver Services Regulation Complexity Launch Infrastructure: + MBMS is more complex + IPDC: gradual introduction through hot spots Receiver: + MBMS does not change anything to it + IPDC: need a new receiver Services: + MBMS offers more complete though integration with UMTS + IPDC: offers full range of multicast services Regulation: + MBMS is very easy as this is in band regulatory rule + IPDC: offers most uncertainties

37 Business Models Effective business models are also an integral part in the establishment of a successful DRM system. oe commerse obusiness models: Subscription based model Pay per view model Free to air model Promotion model Floating licenses model Challenges with pay per view and subscription models o o State Update Problem Digital Rights Locker

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40 DRM The content and service protection picture is not clear yet How much service and content protection is in the broadcast system, how much in the application / end to end service? How to harmonize already defined mechanisms? Likely that different broadcast systems (DVB H, 3GPP MBMS) will have their own service protection mechanisms Where it will end up: Service protection: Broadcast system specific One for DVB/IPDC, one for MBMS, one for. Content protection: OMA DRM broadcast extensions

41 Thanks for listening and Questions?