Standardisation. Ralf Schäfer. Thomson Chair DVB CM-IPTV ITU-T

Transcription

1 Internatinal Telecmmunicatin Unin Internatinal Multimedia Telecmmunicatins Cnsrtium DVB-IP Standardisatin Ralf Schäfer Thmsn Chair DVB CM-IPTV San Dieg, 9-11 May 2006

2 Agenda Why and what shuld be standardized fr IPTV Activity f the varius standardizatin bdies in relatin with IPTV The DVB cnsrtium and IPTV DVB-TM: Setting the specificatins fr DVB-IP What is in ETSI TS ? What is in the cming release? Preparatin f MHP-IPTV DVB-CM: Setting the business case fr DVB-IP Cnclusin San Dieg, 9-11 May

3 Why and what shuld be standardized fr IPTV Why standardizatin fr IPTV Achieve interperability Give cnfidence fr investment Avid cnfusin in the market Lwer csts fr everybdy What shuld be standardized Layers in STB (prtcls, data structures, applicatin runtime, ) Parts f Hme Netwrk and Hme Gateway Parts f the End-t-end system QS, Hwever: Leave sufficient space fr differentiatin, accrding t market requirements San Dieg, 9-11 May

4 Activity f the varius standardizatin bdies in relatin with IPTV Cntributin Netwrk Distributin Netwrk Access Netwrks Hme Netwrk Studi IP Studi Final Studi Backbne Primary Head End Secndary Head Ends IP IP Hme Gateway IP STB STB Mbile Studi Fixed Studi STB San Dieg, 9-11 May

5 Hw des the DVB prject wrk? Cmmercial Requirements Technical Expertise Cnsensus DVB prduced 44 standards since 1993 San Dieg, 9-11 May

6 DVB phases The Cmplete Picture Bradcast IP in DVB DVB GSM/UMTS... Fixed Telecm Wireless Telecm San Dieg, 9-11 May

7 DVB s Vide ver IP initiatives DVB 3.0 IP Datacasting (particularly mbile ver DVB-H) Bradcast (C,S, T) IP Televisin (DVB services ver bradband netwrks) Mbile SW CPCM Bradband IP Cntent Prtectin Cpy Management Multimedia Hme Platfrm / Glbally Executable MHP (e.g. PVR, etc.) Maintenance f the existing standards base SB.. CM TM.... CPCM IPTV HN MHP.. IPI TAM CPT Cmmercial requirements Technical Specificatins San Dieg, 9-11 May

8 DVB-IP first release: Available nw! Technical specificatin structure San Dieg, 9-11 May

9 Philsphy f DVB-IP Phase 1 Keep as much as pssible frm existing DTV standards Reuse existing IP specificatins where pssible Fcus n data & prtcls Infrastructure layer is independent f high level Applicatins Well knwn technlgies: XML, IP prtcls (IETF, ) Optinal Netwrk Prvisining Cnfiguratin Ntificatin f changes HNED* inventry * Hme Netwrk End Device DVB IETF MPEG Netwrk ID Prvisini age ng nt HTTP s TCP HTTP SD&S DVBST P DNS Service ffering SI AV/Data MPEG-2 TS Etc. RTP UDP IP RTC P DSCP DHC P NTP RTSP IGMP SNT P TCP Physical & data link layers; HNS Ethernet, HNS 1394,... San Dieg, 9-11 May

10 Service Discvery and Selectin (SD&S) The SD&S specificatin cvers: Service (and Prvider) discvery Service selectin Transprt f the Discvery infrmatin (push and pull mdes) Service discvery results in: A list f available prviders and services, with sufficient infrmatin t make a chice/select (user) and t enable access (system) Tw types f Live Media Bradcast TS full SI: DVB-SI embedded in the transprt stream TS ptinal SI: Only PSI must be embedded in the transprt stream Service discvery infrmatin represented with and carried as XML recrds XML schemas specified in a nrmative file San Dieg, 9-11 May

11 Service Selectin Live Media Bradcast services: Data sent t a multicast grup is nly frwarded t receivers which explicitly jined the multicast grup using the Internet Grup Management Prtcl (IGMP, RFC 3376) DVB-IP supprts IGMPv3 intrduces surce specific multicast (SSM) t ptimise IP multicast netwrk lad enables ruters t filter n specific surce addresses f senders f multicast grups. Optinally RTSP may be used Cntent n Demand services: Delivered ver IP unicast Accessed via RTSP, DVB-IP prfile specified San Dieg, 9-11 May

12 RTSP client (1) Applicatin-level IETF sessin prtcl t cntrl delivery f data with real-time prperties Why a DVB client? Because RTSP (RFC2623) is quite cmplex and huge It is nt necessary t implement it all fr the DVB service prfiles Current RTSP implementatins have prprietary extensins t make systems wrk The specificatin defines minimal subsets fr each prfile: Guarantee interperability amng DVB HNEDs Reduce testing effrt San Dieg, 9-11 May

13 RTSP client (2) Subsets fr three DVB-IP prfiles: Live Media Bradcast Live Media Bradcast with trick mdes (pause, fast frward, ) On Demand delivery f audi and vide (user initiated + trick mdes) DVB-specific usage f RTSP methds Annunce, Describe, Get_Parameter, Setup Methds specified fr Unicast and multicast Methds in tables, differences with IETF usage clearly marked San Dieg, 9-11 May

14 Delivery f DVB-MPEG-2 based services Based n IETF prtcls MPEG2 TS encapsulated in RTP/UDP/IP accrding t RFC 3550 and RFC2250 Delivery Cntrl Prtcl: RTCP assciated with RTP fr sending infrmatin n transmissin statistics N reprts t be sent by receivers, in view f scalability Sender reprts used t accurately synchrnize independent TSs Netwrk requirements and QS Defines key quality f experience guidelines e.g. jitter and multicast jin timings Defines Quality f Service markings t allw priritizatin f IPTV carriage San Dieg, 9-11 May

15 Release in Q1/2006: BCG Generic BCG Definitin The term Bradband Cntent Guide (BCG) refers t a Cntent Guide that is delivered ver an always-n bi-directinal IP netwrk Hwever, it can be used t describe cntent that is delivered ver any netwrk (e.g. IP, DVB-S, DVB-T ) BCG data mdel: Based n TV-Anytime XML Schema (ETSI TS ) BCG encapsulatin: All BCG data is segmented and carried inside Data Delivery Units A Data Delivery Unit is cmpsed f a cmpressin wrapper and a BCG data structure BCG transprt: Uses existing DVB-IP transprt fr SD&S, i.e. DVBSTP fr push mde HTTP fr pull mde Defines an ptinal query mechanism fr BCG metadata acquisitin, based n TV Anytime part 6-1, i.e. SOAP ver HTTP San Dieg, 9-11 May

16 Release in Q1/2006: BCG Metadata Describes cntent, including: Prgramme Infrmatin (title, synpsis, genre, keywrds, cast ) Service Infrmatin (name, genre, descriptin, URL ) Schedules (time, date, channel, reruns, free/encrypted ) Purchase Infrmatin (price, currency, link t a price server ) Segmentatin Infrmatin (chapters f a mvie, highlights f a sprts event ) Prgram Reviews, Credits Infrmatin Cmpliant with the TV-Anytime XML schema Indexes may be transmitted t accelerate access t metadata BiM-encded San Dieg, 9-11 May

17 Other technical matters Release in Q1/2006: SD&S extensins (AVC) Signaling f new A/V cntent frmats (e.g. H.264, E-AC3, AC3, AAC, HE-AAC, ) Pending: Signaling f Lgical Channel Numbers Signaling f Reginal Services (deplyment facility fr SD&S servers) Applicatin Layer FEC On-ging: DVB-Hme Netwrk based n DLNA Architecture Mapping with DLNA Identificatin f DVB cmplement Cntent prtectin using DVB-CPCM San Dieg, 9-11 May

18 MHP-IPTV Cmmercial Mdule-MHP Released cmmercial requirements fr extending the MHP t IPTV These requirements include Hybrid devices supprting bth DVB bradcast and DVB-IP devices DVB-IP nly devices Technical Mdule TAM/MUG Defining hw t add IPTV t the MHP specificatin Includes ntably the cnnectin frm the MHP APIs t SD&S and BCG Defining a subset f the MHP-IPTV specificatin t be used by applicatins fr markets which are using IPTV prtcls defined by rganizatins ther than DVB r which are nt using standardized prtcls at all San Dieg, 9-11 May

19 CM-IPTV / TM-IPI radmap DVB IP Phases TM-IPI Phase 2 Based n new Technlgies TS CM-IPTV CR dne CR wrk in prgress Prbably runs lnger TM-IPI Phase 1 Based n TS layer CM-IPTV DVB-IP 1.1 TS SD&S BCG Hme Netwrk DVB-IP 1.2 DVB-IP 1.X Cntent Dwnlad Remte Management Prfiling AVC ver TS Over IP Al-FEC Channel num Reginal service NSP Applicatin Hybrid Security t San Dieg, 9-11 May

20 Next: DVB - Cntent Dwnlading System Enable delivery f nn real time IPTV services T a lcal cache ver nn real-time bradband IP channels Data rate can be variable and even intermittent. Targets the dwnlading DVB A/V frmats and mdes Pure audi cntent Metadata Bth push and pull delivery mdels are in the scpe. Multicast and Unicast delivery shuld be supprted. The system shuld be aligned with the DVB BCG specificatin, based n TV-A metadata frmat fr the descriptin f services. San Dieg, 9-11 May

21 Next: DVB - Remte Management System Remte management cvers the fllwing aspects: Cnfiguratin and firmware upgrade (unicast & multicast mechanisms) Device management including alarms Trubleshting including diagnstics RM includes the management f devices n the HN Effrts shuld be made T align with existing standards where pssible (e.g. DSL- Frum) T supprt all kinds f Bradband Netwrks Supprt different kinds f Bradband Devices (e.g. Mdems, Gateways, STB, ) T align with RM Systems fr ther bradband applicatins e.g. vice etc San Dieg, 9-11 May

22 Next: Applicatins in IPTV NSP Appl MHP MHP Xlet Applicatin Xlet NSP Server (prcessing) HTTP/HTTPS NSP (lite) MHP MHP stack JVM HTTP / HTTPS DVB - x // TS TS MHP Applicatin MHP Server (IP) MHP Carrusel CD Server RTSP DTV Middleware mdules w/ Vide Drivers client Operating System DVB -x x // TS TS Vide Vide Head End HeadEnd STB San Dieg, 9-11 May

23 In preparatin Hybrid IPTV services The aim f this task frce is t prvide use cases and cmmercial requirements fr hybrid TV services (Bradband/Bradcast) DVB-IP Phase I prfiling The aim f the prfiling task frce is t grup elementary DVB-IP building blcks t prfiles reflecting the deplyment needs f IPTV service prviders. At least ne f the prfiles enable the transprt f A/V ver MPEG-2 TS withut the need fr an RTP/RTCP layer Security (fcus n cntent security in cllabratin with CM-SEC) DVB-IP Phase II The aim f DVB-IP Phase I was t build an IPTV system widely based n prven technlgies frm the bradcast wrld (e.g. TS layer, DVB- SI, ). The aim f DVB-IP Phase II is t build n new technlgies such as direct IP streaming, supprting the cnvergence f fixed mbile TV netwrks, web services, (indicative) San Dieg, 9-11 May

24 Cnclusin Tday there is a rising call fr wrldwide standardizatin f IPTV, where DVB was ne f the first t start wrk The DVB prject builds a cmplete ecsystem fr IPTV cmplementing existing industry achievements and standards Establishing liaisns with the right partners is seen as key in DVB DVB-IP s base layer enables IPTV industry players t create cmpetitive differentiated ffers while addressing interperability needs Crdinatin between the different standardisatins grups wrking n IPTV is key San Dieg, 9-11 May

25 Questins San Dieg, 9-11 May