0 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 Requirement of service provider for the Data Broadcasting Service over the IPTV Lark.

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0 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 Requirement of service provider for the Data Broadcasting Service over the IPTV Lark Kwon Choi ( ) Dae-Gun Kim, Sang-Soo Lee, Jin-Han Kim draft-lkchoi-mmusic-iptvdbs-req-00.txt 63 rd meeting - Paris, France (July 31-August 5, 2005)

1 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 I. Introduction ( Motivation ) Progressive convergence of IP-based communication and broadcasting  Bidirectional interactive high quality services  IPTV with interactive data broadcasting services (DBS) DBS Standard DVB-MHP, OCAP, ACAP We are preparing the IPTV DBS service!  We need the IP-based DBS standard in view of network. Proposal : Requirements for the DBS over IPTV Multicasting with unicasting transmission requirements Network requirements Receiver, Media format and security requirements

2 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 II. General Requirements Independence of DBS data transmission Various delivery mechanisms of DBS data Supporting of different data transmission formats according to the service scenario of service provider. DBS interactivity of multiple accesses Communication with any number of DBS receivers interactively and simultaneously. Access with any other DBS subscriber in multiparty communication sessions.

3 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 III. Multicasting with Unicasting Transmission Previous DBS Based on the unidirectional transmission. Incomplete DBS due to limited bandwidth of uplink.  Many service providers prefer multicasting transmission.  Restricted contents delivery and low subscriber satisfaction DBS over IPTV Enough bandwidth for uplink and downlink. : IPTV is able to provide interactive DBS vividly Multicasting and unicasting transmission simultaneously. REQ MUL-1 : IPTV DBS transmission method SHOULD be able to support multicasting and unicasting together according to its service plan Multicasting : high simultaneity with many user request Unicasting : low simultaneity with interactive request

4 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 Data Broadcasting System IV. Multicasting with Unicasting Transmission DP CP Unicast Data Broadcasting Server Program linked DBS Program supplementary DBS Program independent DBS ContentsIP Media PlatformService in Receiver Multicast DataReturn Signal (Unicast)Unicast Data PP Multicast Media Broadcasting System Channel Service Multicast Media Return Server Example of DBS flow diagram Figure1. DBS flow diagram

5 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 REQ MUL-2 Classification of In-Band Group for the Video/ Audio program and Out-of-Band Group for IMG data. REQ MUL-3 IGMP multicast group join with IP network specific parameter such as IP address and port. IV. Multicasting with Unicasting Transmission Broadcasting System Multicast Ch#1; AV Media + DBS program linked data Multicast Ch#2; AV Media + DBS program linked data Multicast Ch#3; DBS program independent data ~ IP tuner DeMux DBS System Receiver (STB) DB Server Return Server Multicast Ch#4; DBS program supplementary metadata De- Corder Return Path client Unicast ; Supplementary specific data ~ IP Network Multicast Ch#4; DBS IMG & SI metadata Figure2. transmission diagram

6 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 IV. Multicasting with Unicasting Transmission SDP (Session Description Protocol) ; RFC 2327 IP multicast session - Multicast address for media - Transport Port for media IP unicast session - Remote address for media - Transport port for contact address We apply the updated SDP for the combination of multicast and unicast to the IPTV To treat supplementary and independent DBS.  These need both transmission method simultaneously. Example> 1. news, weather, traffic situation of transportation. 2. messenger or SMS service with TV program.

7 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 V. Network Bandwidth Prerequisite bandwidth of each DBS data for total necessary bandwidth of DBS. Priority regeneration of DBS data stream for the quick reflection of user’s service order. Reliability Reliable data transmission. Use of QoS and FEC for low packet loss with correction. Monitoring packet loss for acceptable error rate. Congestion control Internet-friendly congestion control. Control of application data lifetime.

8 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 VI. Receiver, Media format and Security Receiver Bidirectional interaction with DBS sender. Several multicasting channel join. Synchronization of DBS data between receiver and server. Media format Supporting any media format for the flexibility of multimedia contents. Security Guarantee of DBS security and confidential delivery of data. Different access according to the authorization level. Checking access level of subscriber for the security.

9 draft-lkchoi-mmusic-iptvdbs-req-00.txt 63rd IETF, 1 August 2005 VIII. Next for the Standard Is it possible to adapt this draft to the MMUSIC WG Document ?  I really want to work for the MMUSIC. Please for the detailed discussion. Thank you very much for your attention !