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Multimedia Services from Narrowband to Broadband

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Presentation on theme: "Multimedia Services from Narrowband to Broadband"— Presentation transcript:

1 Multimedia Services from Narrowband to Broadband
Simão Ferraz de Campos Neto Counsellor – ITU-T Study Group 16 Multimedia Services, Systems and Terminals

2 Contents About ITU-T SG 16 Multimedia services
Summaries: access & media components Narrowband services Broadband services Additional slides MediaCom 2004 Project Media Coding

3 About Study Group 16

4 ITU-T Study Group 16 Responsible for studies relating to:
(www.itu.int/ITU-T/studygroups/com16) Responsible for studies relating to: multimedia service definition and multimedia systems, including the associated terminals, modems, protocols and signal processing. Lead Study Group on Multimedia Services, Systems and Terminals e-business and e-commerce

5 ITU-T Study Group 16 Structure
Multimedia Services Systems & Terminals Pierre-André Probst ITU-TSB Counsellor Simão Ferraz de Campos Neto Working Party 1 Modems and Facsimile Terminals Mitsuji Matsumoto Working Party 2 Multimedia Platforms and Interworking Sakae Okubo Working Party 3 Media Coding John Magill Working Party 4 Multimedia Framework John Magill (acting)

6 ITU-T Study Group 16 WPs (1)
Working Party 1/16 - Modems and facsimile terminals H/ Accessibility to Multimedia Systems and Services 11/16 Voiceband Modems: Specification and Performance Evaluation 12/16 DCE-DCE protocols for the PSTN and ISDN 13/ DTE-DCE Interfaces and Protocols 14/ Facsimile terminals Working Party 2/16 - Multimedia platform and interworking D/16 Interoperability of Multimedia Systems and Services F/16 Quality of Service (QoS) and End-to-End Performance in Multimedia Systems G/ Security of Multimedia Systems and Services 1/ Multimedia Systems, Terminals and Data Conferencing 2/ Multimedia over Packet Networks using H.323 Systems 3/ Infrastructure and Interoperability for Multimedia over Packet Network Systems 4/ Video and data conferencing using Internet supported services 5/16 Mobility for Multimedia Systems and Services

7 ITU-T Study Group 16 WPs (2)
Working Party 3/16 – Media coding E/ Media coding 6/ Advanced video coding 7/16 Wideband coding 8/16 Encoding of speech signals at bit rates around 4 kbit/s 9/16 Variable bit rate coding of speech signals 10/ Software tools for signal processing standardization activities and maintenance of existing voice coding standards 15/ Distributed Speech Recognition (DSR) and Distributed Speaker Verification (DSV) Working Party 4/16 – Multimedia framework A/ MediaCom-2004 B/ Multimedia Architecture C/16 Multimedia applications and services I/16 Telecommunications for Disaster Relief New!

8 Multimedia Services…

9 Development of MM Applications & Services
Factors: Users needs Market Trend System Design Architecture Interoperable Common Multimedia Parts, e.g., Coding (G,H,T-series), Security (X-series), Directory (X-series) Integration or Assembling of Multimedia Parts (Terminal Design; J,H-Series) Users Media (CS, PS, Cable) Wired/Wireless (ITU and non-ITU) Recommendations for Applications & Services (F,T series) Interoperability Numbering, Charging Specs. (E-series)

10 Services in the Multimedia Context
Two paradigms Telecommunications perspective Broadcasting perspective Telecoms perspective: Interactive applications, videoconferencing Broadcasting: Video delivery (e.g. commercial television) Convergence: IT / Telecoms / Broadcasting Interactive broadcasting Telecom service providers providing entertainment services Users view versus technologists view

11 Where do we come from? Telephony service Voiceband data
Voice (including audio-conferencing)  Extended services (call waiting, transfer, diversion, hold, pickup, etc  SS7-based) Premium rate services (“pay-as-you-go”  E.155) Voiceband data “Low” speed data (V-series: V.34, V.90, V.92) “Low” speed Internet access Fax (4.8 – 33.3 kbit/s) Low bit rate multimedia video-conferencing 

12 Where to? Multimedia services
Superset of monomedia services Coordinated delivery of more than one media: Audiovisual content (fallback to audio-only) Audiovisual plus whiteboard Delivery of video services Duo / triple play: voice / data / video Capabilities limited by access capacity BUT not all applications need all bandwidth available Taxonomy of media will help understand viability of different types of aggregation to implement a service Evolution: multimedia over narrowband channels to broadband channels

13 How hungry an application?
Video conferencing Internet access & Peer-to-peer applications 2 Voice (PSTN) Upstream Mbit/s 1 Broadcast & Interactive TV 0.5 e-commerce 0.5 1 2 4 26 Downstream (Mbit/s)

14 MM Service Descriptions
Integration of media components from the user’s point-of-view Service definition and requirements are available in the F-series. F.700 contains the umbrella definitions: Definition of several MM tasks: Conferencing (multipoint, bi-directional, real-time) Conversation (point-to-point, bi-directional, real-time) Distribution (point-to-multipoint, unidirectional) Sending (point-to-point distribution, Tx controlled, UD; info pushing) Receiving (point-to-point distribution, Rx controlled, UD; info retrieval) Collecting (multipoint-to-point distrib., UD, Rx controlled; info polling) Media components: audio, video, text, graphics, data and still-pictures Quality level for media components: {-1, 0, 1, 2, 3, 4}

15 MM Service Descriptions (2)
F.70x: network-independent definitions F.702 (F.MCV)-Multimedia conference services F.703 (F.MCS)-MM conversational services Network-specific definitions F.731- N-ISDN MM conference services F.732- B-ISDN MM conference services

16 Access components: a brief summary

17 Access methods Copper: Fiber: Wireless:
“Strict” PSTN (dial-up): the majority ADSL: up- and down-stream offerings vary depending of the network provider & line conditions. Standard limits on 1.5 Mbit/s ADSL+, ADSL2: recent improvements in the techniques, higher bit rates VDSL: higher bit rates Fiber: Backbone (traditional) To the curb (dreamnewer developments) Wireless: Satellite, microwave WiFi & extensions

18 Most recent modem standards
V.34, Two-wire PSTN modem for rates of up to 33.6 kbit/s; V.90, PSTN modem with digital upstream up to 56 kbit/s and analogue downstream up to 33.6 kbit/s; V.91, Four-wire version of V.90 allowing fully digital up and downstream; ; V.92, Enhancements to Recommendation V.90; Geneva, ; ;

19 ITU-T Recommendations on DSL
G – Overview of Digital Subscriber Line (DSL) Recommendations G (HDSL) – High-bit rate Digital Subscriber Line (HDSL) transmission system on metallic local lines G (G.SHDSL) – Single-pair High bit rate speed Digital Subscriber Line G (G.VDSL) – Very high bit-rate Digital Subscriber Line G.994.1, G and G for tests, management and handshake ADSL  next slide

20 ITU-T Recommendations on ADSL
G (G.DMT) – Asymmetrical Digital Subscriber Line (ADSL) Transceivers G (G.LITE) – Splitterless Asymmetrical Digital Subscriber Line (ADSL) Transceivers G – Asymmetric digital subscriber line transceivers - 2 (ADSL2.DMT) G – Splitterless asymmetric digital subscriber line transceivers - 2 (ADSL2.LITE)

21 Optical access standards (1)
Recs. Bit rate Content Date G.955 140 Mbit/s Single channel PDH Long. Compat. 1984 G.957 STM-16 SDH transv. Compat. 1998 G.691 STM-4 up to STM-256 Transv compat. Terminal OAs

22 Optical access standards (2)
G.692 622 Mbit/s – 10 Gbit/s (STM-4 to STM-16) WDM 4 to 32 ch Long. Compat. Line amplifiers mono/bidirect. 1996 / 1998 G.959.1 2.5 and 10 Gbit/s Up to 16 channels WDM Pre-OTN Single /WDM Transv Compat. Term. OAs Id Interfaces 2000 G.693 10 – 40 Gbit/s (STM-64 to STM-256) Single channel Transv. Compat. Intra office 2001 G.694.1 G.694.2 ≥ 80 Ch/10 Gbit/s Up to 18 Ch/2.5 Gbit/s Dense WDM Coarse WDM 2002

23 Media components

24 Data T.120-T.140,T.17x provide definitions for data exchange and control in MM conferencing applications. For example: T.120 defines data protocols for multipoint multimedia conferencing (Annex C describes a light version of T.120). E.g. White-board applications. T.140 adds text conversation (“chat” e.g. for hearing-impaired people) T.17x: MHEG for information retrieval

25 Media Coding Four aspects: Audio Video Still-image Other media coding

26 Media Coding: Audio Three “classic” quality tiers: audio, wideband speech, and telephony speech. ITU-T focus on interactive communications, hence mainly produced wideband and telephony speech compression standards (F.700’s A0 and A1 Quality Levels).

27 Media Coding: A2/A3 Audio
A2 coding for broadcast applications J.41 (logarithmic PCM compression, 15kHz, 384kb/s) 1988 A2&A3 Audio coding: ISO MPEG MPEG2/Audio (e.g. MP3) MPEG4/Audio

28 Media Coding: A1 Audio A1: Wideband speech coders (50-7000Hz)
J bit logarithmic PCM compression (192 kbit/s) 1988 G.722 Split-band ADPCM Coding of 7 kHz speech (64,56&48 kbit/s) 1988 G Transform coding (32&24 kbit/s) 1999 G Coding of 7 kHz speech at around 16 kbit/s ( kbit/s) 2002

29 Media Coding: A0 Audio A0: Telephony speech coders (300-3400 Hz)
G.711 PCM coding (64 kbit/s) late 60’s G.726 ADPCM coding (32; 40, 24 & 16 kbit/s) 1988 G.727 Embedded ADPCM coding (40-16 kbit/s) 1990 G.728 LD-CELP coding (16; 40, 11.8 &9.6 kbit/s) 1992 G Dual-rate coding (5.3 & 6.3 kbit/s) 1995 G.729 CS-ACELP coding (8; 12.8 & 6.4 kbit/s) G.VBR Variable bitrate speech coding New!

30 Media Coding: Video ITU standards: H.261  Video Codec for N-ISDN
H.262 = MPEG2/Video (“Common text”) H.263 and Annexes  IP, wireless, and N-ISDN H.264 (ex-H.26L): successor to H.263, work being done teamed up with MPEG Ongoing (JVT)

31 Comparison of H.264 to existing standards (high bit rates broadcasting)
Tempete CIF 30Hz 25 26 27 28 29 30 31 32 33 34 35 36 37 38 500 1000 1500 2000 2500 3000 3500 Bit-rate [kbit/s] Y-PSNR [dB] Quality MPEG-2 H.263 MPEG-4 JVT/H.26L This figure was presented at the last WS on MM Convergence where you can find the complete set of slides (see session 6). It shows the first results of the new algorithm in comparison with existing stds like H.263, MPEG-2 and MPEG-4. For the same quality level, the bit rate an be reduced by almost 50 %! Source: JVT Coding, T.Wiegand, WS MM Convergence, March 2002,Session 6

32 Media Coding: Still Image
Still image (B/W & color) is used in facsimile services, in Internet applications, digital photography, etc. Standards work performed by a “Collaborative ITU|ISO/IEC Team” working under ISO/IEC SC29 rules and organization ITU has “common-text” for JPEG/JBIG (T.80 series); soon-to-be JPEG2000 (T.800 series)

33 Other media coding Currently not performed in ITU-T:
Character coding (ISO/IEC SC2 activity) Speech synthesis (text-to-speech) Speech recognition (new developments)

34 Narrowband multimedia services

35 Multimedia terminals & systems
Integration of media components from the equipment/protocol point-of-view H.324: Communications using circuit-switched services (fixed and mobile, including 3GPP)  H.320: Communications over N-ISDN  H.310: Communications over B-ISDN  H.323: Communications over packet networks (mainly IP, mainly voice)  H.450.x: Supplementary services for H.323 systems H.246: Multimedia Terminal Interworking H.248[.x]: Interworking between H.323 packet-based networks and the PSTN H.235: Security for H.323 systems

36 PSTN multimedia terminals
Functional model for H.324 Terminal Network Interface Audio Coding (e.g. G.723.1) Video Coding (e.g. H.261, H.263) Data Coding (T.120; V.14, LAPM) System Control (H.245,SRP/LAPM) Call Control (National standards; V.250) MM Mux & Sync (Fixed network: H.223; Mobile: H.223 Annexes A-D) User Will not scale towards bandwidth-hungry applications due to basic limitation of the network capacity Conferencing-centric

37 ISDN multimedia terminals
Functional model for H.320 N-ISDN Terminal Network Interface Video Coding (H.261) Audio Coding (G.711) System Control (H.242) Call Control (Q.931) MM Mux & Sync (H.221) Data Coding (T.120) User Will not economically scale towards bandwidth-hungry applications Conferencing-centric

38 Packet-based multimedia terminals
Functional model for H.323 Terminal Network Interface Audio Coding (e.g. G.711, G.729) Video Coding (e.g. H.261, H.263) User Data Coding (T.120) System Control (H.245) Call Control (H.225.0, Q.931) MM Mux & Sync (H.225.0) User Scales well towards bandwidth-hungry applications, depending on capacity of the underlying networks Conferencing-centric

39 Interoperability amongst MM terminals
H.324 H.310 H.320 H.323 Audio/Video User data Mux QoS RTP/ Non-QoS H.223 H.225.0 H.222.0 H.222.1 H.221 Call Control (H.245) (H.242/H.243) Anx.A-D Fixed Mobile Scope for H.246

40 Broadband multimedia services

41 Two broadband perspectives
Convergence from broadcasting perspective: IP Cablecom Architecture Convergence from telecom perspective Full-service VDSL Architecture

42 Broadband MM over cable: ITU-T Cablecom
Project managed by ITU-T Study Group 9 IP Cablecom refers to standards for IP cable communications IP Cablecom defines architecture and interface specifications It builds on J.83 / J.112 cable modem transport Initial market driver IP Cablecom for has been IP telephony Flexibility for cable providers to offer new services  market deregulations

43 Sample applications for ITU-T Cablecom
Residential/Business IP Telephony Voice over IP Video IP telephony Voice/data/video unified messaging Enhanced conferencing and media services Entertainment Services Real-time multiplayer interactive gaming

44 IP Cablecom architecture
Call Management Servers AN PSTN Gateway Managed IP Network CM PSTN HFC CM MTA Embedded MTA AN Access Node CM Cable Modem HFC Hybrid Fiber Coax Network MTA Multimedia Terminal Adapter PSTN Public Switched Tel. Network Back Office Servers

45 IP Cablecom Recommendations for interoperability intra-zone and with PSTN
Architecture J.160 Architecture Signaling J.162 Network Call Signaling J.165 IPCablecom Signaling J.171 Trunk Gateway Control Protocol Quality of Service J.163 Dynamic QoS Media/Codecs J.161 Audio Codec Reqs. Operating Support System J.164 Event Messaging J.166 MIB Framework J.167 MTA Provisioning J.168 MTA MIB J.169 NCS MIB Security J.170 Security

46 IPCablecom Recs. for interoperability interzone and inter-domain directly over managed IP backbones
Quality of Service J.174 Inter-domain QoS Security J.170 Security Architecture For further study Signaling For further study Operating Support System J.164 Event Messaging

47 Broadband MM over the local loop: Full service VDSL specifications
Work under the FS-VDSL Focus Group (whose parent Study Group is SG 16) Video-centric services using the local loop Opportunity for network operators to compete with Cable network providers Not ITU-T Recommendations (yet) Assumes high rate availability at customer’s premises: combination of fiber & VDSL Current architecture is ATM-based (PPPoA), IP extensions foreseen (PPPoE)

48 FS-VDSL Architecture Broadcast TV Video on Demand Internet Services
Voice Services (PSTN/ISDN) Digital Customer Premise Distribution Network User premises VDSL Local Loop & Transmission Multiplexing & Delivery over optical Broadcast TV HeadEnd The HeadEnd system is expected to receive video streams in various formats, reformat and encapsulate the video streams, interface the core network and transmit the video signal over the core network towards the access network. Video on Demand HeadEnd Due to the interactive nature of VoD services, the VoD Headend comprises of multiple elements that ensure the on demand video streaming of content. Voice Gateway The voice gateway performs the necessary functions to interface the digitally modulated voice traffic to and from the ATM based AN to the legacy PSTN/ISDN. The voice gateway function may be performed by a single device or by multiple devices (such as media gateways, signaling gateways and media gateway controllers). Digital Broadcast Network Interactive A/V Network Internet Service Provider Voice Services (IP, PSTN)

49 Full Service VDSL Technical Specifications
Focus Group Technical Specification (http://www.itu.int/ITU-T/studygroups/com16/fs-vdsl) Part 1: Operator requirements Part 2: System Architecture Part 3: Customer Premises Equipment Part 4: Physical Layer Specification for Interoperable VDSL Systems Part 5: OAM&P aspects for FS-VDSL Services H.FSV -Arch H.FSV-OAMP

50 Conclusions Network / infrastructure evolution will allow introduction of richer services Convergence of services and applications from IT, Telecom & Broadcasting industries Services that can be introduced are a function of the bandwidth available: taxonomy of the applications Evolution: monomedia, narrowband services to multimedia, narrowband to multimedia, broadband

51 Thank you for your attention!
For further contact, please feel free to contact: Simão Ferraz de Campos Neto Counsellor, ITU-T Study Group 16 Tel: Fax: Last slide for presentation at the Workshop.

52 Additional Slides The slides from here on are provided for information of the attendees and cover in more detail the Mediacom2004 Project and several media coding related standardization activities.

53 MediaCom 2004 An ITU-T Study Group 16 Project

54 MediaCom 2004 Context Created in recognition of:
the rapid growth in digital, wireless, and IP networks; the convergence of technologies e.g. broadcasting, communications, information technology, etc.; that multimedia topics are addressed in many SDOs; the growth in multimedia services and applications; the need to study performance, interworking, interfaces etc. for user satisfaction. MM A+S are converging according to several dimensions - technologies (physical layers, protocols) - communities - SDOs involved the need to study in priority important parameters like performance, interworking, interfaces, etc.. for user’s satisfaction.

55 MediaCom 2004: Objectives The objective of the MediaCom2004 Project in SG 16 is to create a framework for the harmonized and coordinated development of multimedia communication standardization for use across all ITU-T and ITU-R Study Groups, and in close cooperation with other regional and international SDOs and industry forums. The MEDIACOM project objective is to ….

56 MediaCom 2004: Goal One of the main goals of the MediaCom2004 Project is to reduce need for higher layer Gateway functionality Mobile Network IP Network CS Network Telephony, FAX, VPS/VCS, Webcasting, Multimedia Gateway In practical terms, the goal is to reduce as far as possible higher layer Gateway functionalities between the different platforms. The trend being to support the same services on different networks as indicated in this slide. The issues dealing the convergence IT/telecom at S+A level has been addressed now for many years (see slide!) The next challenge is the convergence with the broadcasting community

57 Diagram of Interactivity in an Era of Convergence
ITU-R Study Group 6 PRODUCTION - TELEPHONE - PC - BROADCASTING DATABASE - FILMS - BANK - …… SERVER 2 INTERACTIVE NON SERVER 1 NETWORKS INTERFACE - FIBRE - CABLE - TERRESTRIAL N. - SATELLITE N. RX TX ... P U SERVER USERS This slide was presented y Mr.Magenta, chair of SG6 ITU-R (*) and show very clearly that broadcasters are upgrading their networks to support full interactive services. --> example: GSM/3G - phone with DAB module (1,5 Mbit/s downstream!) --> there is an urgent need to address the interworking and performance issues with the broadcasting community (*) see WS MM Convergence, opening session

58 MediaCom Timelines Scope and plan drafted 1999/2000; approved at WTSA 2000 Recent workshops IP Networking/MediaCom 2004 (Geneva, April 2001) MM in the 21st Century (Brazil, June 2001) MM Convergence (Geneva, March 2002) Security (Seoul/Korea, May 2002) IP/Optical (Chitose, July 2002) Satellites in IP & Multimedia (December 2002) Steering Committee meetings: 23 April 2001 14 March 2002 Project updating: SG16 meeting, Brazil, May 2001 SG16 meeting, Geneva, February & October 2002 Next review: Other ITU-T Workshops (Emergency Telecoms, E-health) Next SG 16 meetings This slide shows the MEDIACOM-2004 project milestones.

59 MediaCom 2004 Interactions
Seeking to work with: Other ITU-T Study Groups ITU-R Study Groups IETF ISO/IEC Regional bodies, e.g. ETSI Industry & other bodies as required The challenge is to involve all major players in the field of MM S+A in creating a kind of platform for the exchange of relevant information and to achieve a voluntary coordination of the development of stds. One of the instrument is a “steering committee” where high level officials are representing these bodies.

60 MediaCom2004 Work Strategy
Seven Framework Study Areas (FSA) (A/16) Project MediaCom 2004 (B/16) MM Architecture (C/16) MM Applications and Services (D/16) Interoperability of MM Systems and Services (E/16) Media Coding (F/16) QoS & E-to-E performance in MM Systems (G/16) Security of MM Systems and Services (H/16) Accessibility (total comm. concept) (I/16) Telecommunications for disaster relief MediaCom 2004 Steering Committee Aligned ‘Questions’ in Study Group 16 Database of multimedia related standards A few words now on the organisation of the MEDIACOM 2004 project work in SG16: Framework questions: FSAs Equipment end system related questions Database Steering Committe

61 MediaCom 2004 Framework in SG16
MEDIACOM 2004 (Q.A/16) Generic Questions B/16 to I/16 Framework Standardisation Areas (FSA) Equipment and system questions 1/16 to 15/16 Another representation of the structure is shown here: --> Q A/16 is the umbrella question “MEDIACOM-2004”. --> the seven FSA’s and the vertical questions cover the S+A MM topics addressed in SG16. Example of relationship between “horizontal” and “vertical” questions: --> Q E/16 Media coding is developing a “roadmap” for audio, speech, date and video coding --> Q 8/16 is specifying a coding algorithm for speech signals at bit rates at about 4 kbit/s

62 MediaCom 2004 Steering Committee (SC)
High level committee: role of the SC is to address coordination issues at high level and determine issues to be coordinated by the relevant technical groups. A tool to help coordination across all SDOs working on MM communication standards Address multilateral issues Co-operation through discussion to provide customer oriented solution Members: SGs ITU-T, SGs ITU-R, IETF, MPEG, ETSI, W3C, …. Here more information on the SC of MediaCom 2004.

63 MediaCom 2004 – Continued activities
Permanent review of the project (see SG16 page at itu.int/ITU-T/studygroups/com16) Coordination is in general performed at working level Workshops represent an excellent opportunity to improve the communications among the different entities involved in the development of MM standards Now a few information on the project results. This slide indicates how the review and update of the project is made: --> permanent review --> use workshops --> coordination at two levels: working / SC

64 MediaCom 2004 Highlights from the first workshop (IP-Networking and MediaCom 2004)
Transition towards NGN E-Commerce/E-business MM service evolution Convergence/Interactive broadcast Service billing/accounting IP VPN MM mobility MM access platform  for more details, please consult the final report of the WS (SG 16 ITU-T website). One of the first step was to adress the interface and the respective study items of the IP project of SG13 and MEDIACOM-2004 For this purpose, in a first workshop the main topics listed on this slide were addressed Here two examples: - Understanding on IP Billing / Accounting: --> the charging/billing algorithms used by the network and service providers will probably remain an instrument of differentiation and competition -->The basic information that needs to be collected in order to allow such charging and billing will need to be standardized --> Cooperation flow for standardization in ITU-T - EB/EC: Business to Consumer: -Payment Mechanism Universal method for payments (particularly micro- payments) using the ITU long experience with telephone billing and cross-currency payments among telephone operators For further information consult the WS final report on SG16 web site!

65 MediaCom 2004 Highlights from the second workshop (MM Convergence)
Service and network architecture Security and privacy MM quality of service Broadband delivery and in-home distribution Interactivity in Broadcasting Voice/video coding and signal processing  for more details, please consult the final report of the WS (SG 16 ITU-T website). These slide gives a list of topics discussed during the workshop on MM convergence, in particular the issues of interactivity supported by broadcasting platforms like Radio/TV transmitters and the different types of cable TV networks. For this reasons ITU-R SG6 and ITU-T SG 9 as well as other key players were actively involved in the workshop. A number of important standardisation items for which the cooperation and harmonization have to be improved, have been identfified, e.g: MM Network Architecture and Framework Integrated/Converged scenarios among different types of MM networks Support of Digital Rights Management End-to-End QoS reference architecture Include home networking in reference model J.110 BMM and TMM concepts (business models, API,..) ... To conclude on the convergence issue, at this stage we should recognised that we (Telcos and BC experts) are still in the process of understanding each other and that further efforts are needed to improve the harmonisation of standards!

66 MediaCom 2004 Highlights from the third workshop: (IP/Optical)
NGN standardisation needed to support new services on a large scale (new SG 13 Project) Network operators and service providers expect high profit but deployment may be slow on technical and regulatory grounds. Open interfaces and interconnection are key, interop with legacy systems needed for incumbents New broadband services provision underway (Hikari) IP-based MM communication is not yet well accepted for broadcasting applications (connectionless model). Work needed to overcome restrictions.  for more details, please consult the final report of the WS (SG 16 ITU-T website). These slide gives a list of topics discussed during the workshop on MM convergence, in particular the issues of interactivity supported by broadcasting platforms like Radio/TV transmitters and the different types of cable TV networks. For this reasons ITU-R SG6 and ITU-T SG 9 as well as other key players were actively involved in the workshop. A number of important standardisation items for which the cooperation and harmonization have to be improved, have been identfified, e.g: MM Network Architecture and Framework Integrated/Converged scenarios among different types of MM networks Support of Digital Rights Management End-to-End QoS reference architecture Include home networking in reference model J.110 BMM and TMM concepts (business models, API,..) ... To conclude on the convergence issue, at this stage we should recognised that we (Telcos and BC experts) are still in the process of understanding each other and that further efforts are needed to improve the harmonisation of standards!

67 Working Party 1 Modems and Facsimile Terminals

68 Status report of SG 16 activities: Modems and Facsimile (1)
Accessibility (Q H/16): Text telephony (Rec V.18): extension to include text telephony for mobile users Text telephony over IP PCM Modems (Q 11/16): New Rec V (ex V.MoIP): procedures for the end-to- end connection of V-series DCEs over IP-networks In the last part of my presentation, I will give a status report of the ongoing work on MM S+A in SG16 in the following areas: - Modems and facsimile terminals - MM platforms and interworking - Media Coding - Multimedia framework In the Modem area, we are at present developing a new recommendation V.moip (m=modem not music): procedures for the end-to-end connection of V-series of modems over IP-networks …see next slide!

69 Modem-over-IP context
This figure extracted from V.moip shows modems connections in a mixed network environment which are dealt with in the rec under development (we have similar Recs for Fax over IP: T.37, T.38). New Rec V.150.1: procedures for the end-to- end connection of V-series DCEs over IP-networks

70 Status report of SG 16 activities: Modems and Facsimile (2)
DCE-DCE protocols for PSTN and ISDN (Q 12/16): Amendments to Rec V.42 (possible consequences of V.150.1) DTE-DCE interface protocols (Q 13/16): Revision of Rec V.250 (possible consequences of V.150.1) Facsimile Terminals (G3 and G4) (Q 14/16): Revisions to several Recs of the T-series in support of color fax & improved TIFF spec The remaining work done in this area (Modems and Fax) is mainly focused on improvements and maintenance of existing Recs as you can see from this slide.

71 Some details on modem standards: V.34
V.34, Two-wire PSTN modem for rates of up to 33.6 kbit/s; 28800, 26400, 24000, 21600, 19200, 16800, , 9600, 7200, 4800, bits/s Between bit/s Synchronous, with the usual fallback: V.34V.32bisV.32V.22bisV.22 Uses other V-series recommendations for specific functions such as V.8, V.8bis (startup), V.42 (error correction), etc.

72 Some details on modem standards: V.90
V.90, PSTN modem with digital upstream up to 56 kbit/s and analogue downstream up to 33.6 kbit/s Full duplex operation on the PSTN with echo cancellation Downstream: PCM modulation at a symbol rate of 8000 and synchronous channel data signalling rates from 28kbit/s to 56 kbit/s in discrete increments Upstream: (analogue) V.34 modulation; synchronous channel data signalling rates from 4.8 kbit/s to 28.8 kbit/s with optional support for 31.2 and 33.6 kbit/s Data signalling rates close to the maximum possible by use of adaptive (training) techniques exchange of rate sequences during start-up to establish the data signalling rate Modem start-up or selection: V.8 & V.8-bis (optionally) Fallback mode to full-duplex V.34V.32bisetc

73 Some details on modem standards: V.92
V.92, Enhancements to Recommendation V.90; Geneva, ; ; Supports the V.90 features (see preceding slide) Similar to the downstream mode, negotiates V.34 modulation upstream if a connection will not support PCM modulation upstream Exchange of rate sequences during start-up to establish the data signalling rate Reduced start-up time on recognized connections Support of modem-on-hold procedures in response to call-waiting events or outgoing call requests Fallback to V.90V.34etc

74 Fax-related Recommendations
T.4, Standardization of Group 3 facsimile terminals for document transmission T.35, Procedure for the allocation of ITU-T defined codes for non-standard facilities T.37, Procedures for the transfer of facsimile data via store-and-forward on the Internet T.38, Procedures for real-time Group 3 facsimile communication over IP networks Other support recommendations: T.42 (continuous tone), T.43 (grey scale & color coding in fax), T.44 (mixed raster content), T.45 (run-length color encoding) T.5 (testing method for G3 PSTN fax)

75 Working Party 2 Multimedia Terminals and Systems

76 Multimedia terminals & systems
Integration of media components from the equipment/protocol point-of-view H.320: Communications over N-ISDN H.310: Communications over B-ISDN H.323: Communications over packet networks (mainly IP) H.324: Communications using circuit-switched services (fixed and mobile, including 3GPP) H.246: Multimedia Terminal Interworking H.248[.x]: Interworking between H.323 packet-based networks and the PSTN

77 ISDN multimedia terminals
Example: Functional model for H.320 N-ISDN Terminal Network Interface Video Coding (H.261) Audio Coding (G.711) System Control (H.242) Call Control (Q.931) MM Mux & Sync (H.221) Data Coding (T.120) User

78 Packet-based multimedia terminals
Example: Functional model for H.323 Terminal Network Interface Audio Coding (e.g. G.711, G.729) Video Coding (e.g. H.261, H.263) User Data Coding (T.120) System Control (H.245) Call Control (H.225.0, Q.931) MM Mux & Sync (H.225.0) User

79 PSTN multimedia terminals
Example: Functional model for H.324 Terminal Network Interface Audio Coding (e.g. G.723.1) Video Coding (e.g. H.261, H.263) Data Coding (T.120; V.14, LAPM) System Control (H.245,SRP/LAPM) Call Control (National standards; V.250) MM Mux & Sync (Fixed network: H.223; Mobile: H.223 Annexes A-D) User

80 Interoperability amongst MM terminals
H.324 H.310 H.320 H.323 Audio/Video User data Mux QoS RTP/ Non-QoS H.223 H.225.0 H.222.0 H.222.1 H.221 Call Control (H.245) (H.242/H.243) Anx.A-D Fixed Mobile Scope for H.246

81 Status report of SG 16 activities: WP2 (1)
Interoperability of MM systems and services (Q D/16): Roadmap for interoperability studies QoS and E-to-E performance in MM-Systems (Q F/16): QoS Architecture (H.qos.arch) MM QoS service classification (H.mmclass) Call processing performance in MM systems (H.mmcp) Controlling service priority (H.priority) Security of MM systems and services (Q G/16): Hybrid security profile to Rec H.235 on Security and Encryption Mobile security (Rec H.510) Security for Emergency Telecommunications and Disaster Relief (ETS) In the area of platform and interworking for MM, the work is at present focused on - security - mobility - further developments of H.323 (basic recs for MM over packet based network and VoiP) and H.248 (media gateway protocol decomposition developed in cooperation with IETF)

82 H.235 - “H.323 Security” Security Protocol Architecture
AV Applications Audio G.711 G.722 G.723.1 G.729 Video H.261 H.263 Encryption RTCP H.225.0 Terminal to Gatekeeper Signaling (RAS) Terminal Control and Management Data Security Capabilities T.124 T.125 Unreliable Transport / UDP, IPX Reliable Transport / TCP, SPX Network Layer / IP / IPSec Link Layer /...... Physical Layer / ..... T.123 Scope of H.323 Scope of H.235 TLS/SSL Multimedia Applications, User Interface Authenti- cation RTP Scope of T.120 Call (Q.931) H.245 System Control This slide illustrates the work on security and encryption for H.323 (IP-based network) multimedia systems. Rec H.235 covers authentication and privacy of all real-time media streams exchanged during a conference. -the dotted areas shows the terminal part addressed in H.323 and the red parts the security features defined in H.235. -->You can find a complete presentation of the SG16 work on security in the workshop which was held two months ago in Seoul!

83 Status report of SG 16 activities: WP2 (2)
MM-Systems, terminals and data conferencing (Q 1/16): Revision to Recs T.120, H.222.0, H.320, H.324 MM over packet based networks (H.323 systems) (Q 2/16): Further development of H.323 (QoS, Internet protocols, modem relay) Further development to H.460 (use of generic extensive framework) As illustration, here one example: --> development of security features for H.323 Multimedia Systems and Services

84 Status report of SG 16 activities: WP2 (3)
Infrastructure and interoperability for MM over packet based networks (Q 3/16): Media gateway decomposition Rec. H.248.1: packages add new functionality Video and data conf. using IP-supported services (Q 4/16): Integration of video and data, interoperability Mobility (Q 5/16): H.5xx series Mobility protocols and procedures Terminal mobility SG 16 ongoing work includes: - improvement and extension of H.248 (Media Gateway decomposition between the MG and MGC in close cooperation with IETF), - MM mobility (new H.5xx series of Recs), this work includes H.510 Mobility Security as indicated before.

85 Working Party 3 Media Coding

86 Status report of SG 16 activities: Media coding
Media coding (Q E/16): Media coding involves four aspects: Audio, Video, Still-image & possibly other media coding (eg character coding) Umbrella question for Media Coding coordination Completion of JPEG T.800, T.801, T.803, T.804 (future work done in ISO/IEC JPEG) Advanced video coding (Q 6/16): New generation of video coding standards for all applications (Joint Video Team SG16/MPEG)  ITU-T H.264 | MPEG4 Part 10 (Advanced Video Coding) In the area of media coding, main progresses have been achieved in the standardisation of audio and video coding algorithm, e.g: -New Wideband speech coding standard G.722.2 Adaptive Multi-Rate Wideband (AMR-WB) codec brings a breakthrough in subjective speech quality at low bit rates around 16 kbit/s. The new codec favorably compares with or exceeds the quality of G.722 operating at considerably higher bit rates (48 to 64 kbit/s). - JVT … see next slide!

87 Status report of SG 16 activities: WP3 JVT-Project (1)
New ITU-T Q.6/SG16 (VCEG - Video Coding Experts Group) standardization activity for video compression August 1999: 1st test model (TML-1) December 2001: Formation of the Joint Video Team (JVT) between VCEG and MPEG to finalize H.264 as a joint project: JVT Coding (similar to MPEG-2/H.262) February 2002: WD-2 (11 th test model: TML-11) Schedule: December 2002: Last major feature adoptions February 2003: Final approval of H.264 “Advanced Video Coding” JVT project Building on the successful collaboration that delivered the MPEG-2 video and systems standards to the world, the two leading standards bodies ITU-T and ISO/IEC have launched a new project that will enhance video coding even further: The Joint Video Team (JVT). This entity is expected to bring substantial improvements in video coding efficiency, paving the way for the commercialization of a broad range of applications, such as streaming video, digital TV, etc... The agenda of the project is shown here, final approval of the new std is scheduled for the end of Source: JVT Coding, T.Wiegand, WS MM Convergence, March 2002,Session 6

88 Status report of SG 16 activities: WP3 JVT-Project (2)
Simple syntax specification Targeting simple and clean solutions Avoiding any excessive quantity of optional features or profile configurations Improved Coding Efficiency Average bit rate reduction of 50% given fixed fidelity compared to any other standard Improved Network Friendliness Issues examined in H.263 and MPEG-4 are further improved Major targets are mobile networks and Internet The JVT project will take over the H.26L (Advanced video coding for low bit rate communication) project of the ITU-T and will create a single interoperable solution for a next generation of standard video coding. The new design effort is anticipated to result in the creation of technically aligned standards in the form of a part of the MPEG-4 Standard as well as in an ITU-T Recommendation. Here the basic requirements to the new algorithm. Please note the potential reduction of the bit rate for a given quality. --> see next slide Source: JVT Coding, T.Wiegand, WS MM Convergence, March 2002,Session 6

89 Comparison of H.264 to existing standards (low bit rates  videoconferencing)
27 28 29 30 31 32 33 34 35 36 37 38 39 50 100 150 200 250 Bit-rate [kbit/s] Foreman QCIF 10Hz Y-PSNR [dB] Quality MPEG-2 H.263 MPEG-4 JVT/H.26L This figure was presented at the last WS on MM Convergence where you can find the complete set of slides (see session 6). It shows the first results of the new algorithm in comparison with existing stds like H.263, MPEG-2 and MPEG-4. For the same quality level, the bit rate an be reduced by almost 50 %! Source: JVT Coding, T.Wiegand, WS MM Convergence, March 2002,Session 6

90 Comparison of H.264 to existing standards (high bit rates broadcasting)
Tempete CIF 30Hz 25 26 27 28 29 30 31 32 33 34 35 36 37 38 500 1000 1500 2000 2500 3000 3500 Bit-rate [kbit/s] Y-PSNR [dB] Quality MPEG-2 H.263 MPEG-4 JVT/H.26L This figure was presented at the last WS on MM Convergence where you can find the complete set of slides (see session 6). It shows the first results of the new algorithm in comparison with existing stds like H.263, MPEG-2 and MPEG-4. For the same quality level, the bit rate an be reduced by almost 50 %! Source: JVT Coding, T.Wiegand, WS MM Convergence, March 2002,Session 6

91 Status report of SG 16 activities: WP3 audio coding
Wideband coding (Q 7/16): wideband speech coding at around 16 kbit/s 4 kbit/s speech coding (Q 8/16): procedure to continue under discussion Variable bitrate coding of speech signals (Q 9/16): work plan under discussion applications: 3G, VoIP, PSTN, PCME, DCME,… Software tools (Q 10/16): maintenance existing coding standards extension of the ITU-T SW tool library To conclude on the work of SG16 in the media coding, here the status of the work on 4 kbit/s and VBR speech coding.

92 Working Party 4 Multimedia framework

93 Status report of SG 16 activities: MM Framework
Telecommunications for Disaster Relief (Q.I/16): Support for emergency communications in disaster recovery operations ETS trends: CSIP, TelephonyMM, NationalGlobal Q.I/16 endorsed by TSAG (SG2/SG16 responsibility?) Workshop in Geneva, February (see Focus Group on FS-VDSL: Transfer of Full Service VDSL Forum activities to a Focus Group of SG 16 in accordance with Rec A.7 Adopt the FS-VDSL specifications Upgrading to ITU-T Recs foreseen in May 2003 Finally two new activities in SG16 which may interest you: new question under development on Emergency Telecommunication Service (ETS) based on proposals submitted at the last meeting in February The idea is, starting from the users requirements (mainly governmental entities) to coordinate and harmonised the development of the corresponding stds. TSAG endorsed the question and asked for clarification of the responsibilities of SG2 and SG16. A TSB circular will be sent to inform the membership and stimulate contributions on the subject. Workshop scheduled for Spring 2003 (date to be confirmed!) --> scope and background: see slide above! FG FS-VDSL: - The FS-VDSL Forum is a group of over 60 companies who share a common view for an end-to-end multi-service video-centric network platform based on Full Service Very High Speed Digital Subscriber Line. - Following a request from the FS-VDSL, ITU-T agreed to transfer the work of the forum to a so called Focus Group of SG16 in accordance with Rec A.7. (close cooperation with SG15)

94 Focus Group on Full-Service VDSL
New working strategy to cooperate with Fora/Consortia & complement the work of ITU-T Study Groups A.7: establishment of an arms-length organization of ITU-T Aim: enable Triple Play using VDSL Five-part specification: Part 1: Operator requirements Part 2: System Architecture Part 3: Customer Premises Equipment Part 4: PHY for Interoperable VDSL Systems Part 5: OAM & P aspects for FS-VDSL Services Parts 2+3 & 5 will be transformed into Recommendations; Part 1 will be come a Supplement (H-Series) See

95 Organisation of FS-VDSL Focus Group work
DRM Expert Group Architecture Key: Responsible for creating published document Advises working groups Published documents VDSL Working System Architecture Working Group OAM CPE Operator Contributions to VDSL Standards Specification Physical Layer Specification for Interoperable VDSL Systems Requirements Review This is the present structure of the FS-VDSL Forum (*), from which you can derive the five areas covered by the technical specification: - Operator requirements - System architecture specification - Customer Premises Equipment Specification - Physical Layer Specifications for interoperable VDSL Systems - Operations, Management and Provisioning Specification As conclusion, … (*) Source: FS-VDSL presentation, B.Marti, TSAG meeting, June 2002

96 Conclusions – MediaCom 2004
Coordination and harmonisation for development of standards supporting converging services, IT/Telecommunications & Broadcasting is under way and urgently needed MEDIACOM 2004 of SG16 is the umbrella for this activity in the field of services and applications In SG 16, work is progressing in services, emergency telecoms, telematic terminals, modems, MM Terminals (including IP telephony), and media coding Exploring new innovative ways to work and increase the value to the membership The workshops represent an excellent opportunity to better understand the MM work and to coordinate the work among the different players. From my viewpoint, … Thank you very much for your attention!

97 Media Coding Supplemental Slides

98 Telephony-band Speech Coding Families

99 Telephony-band Speech Coding Families

100 A2/A3 Non-ITU Standards MPEG2/Audio: audio coding > 64 kbit/s (1992) MPEG4/Audio: audio + speech coding at bit rates between 64 and 2 kbit/s (1998)

101 A0-A1 Non-ITU Standards ETSI/3GPP: ARIB (Japan):
13 kbit/s RPE-LTP (Full rate GSM, 1988) 6.5 kbit/s VSELP (Half-rate GSM, 1993) 12.2 kbit/s EFR (Enhanced full-rate GSM, 1996) kbit/s AMR (Adaptive Multi Rate, 1999) kbit/s AMR-WB (Wideband AMR, 2001) AMR-WB+  ongoing work ARIB (Japan): Full-rate PDC (Personal Digital Communication) 6.7 kbit/s VSELP Half-rate PDC 3.45 kbit/s Pitch Synchronous Innovation CELP

102 A0-A1 Non-ITU Standards (cont’d)
US TIA (ANSI) CDMA / 3GPP2 IS96 8,4,2 kbit/s QCELP (Qualcomm CELP, 1992) IS , 4, 0.8 kbit/s EVRC (Enhanced Var. Rate Codec, 1996) IS , 6.2, 2.7, 1 kbit/s VRC (Variable Rate Codec, 1998) CDMA ,4,2.4,0.8 kbit/s SMV (Selectable Mode Vocoder, SMV, 2002) Wideband SMV  ongoing work (target: end 2003) TDMA IS kbit/s VSELP (Vector-Sum Excitation Lin.Pred., 1990) IS kbit/s ACELP (Algebraic CELP, 1997) PCS1800 (GSM upbanded to 1800 MHz) IS kbit/s US1 (1999)

103 Still Image Coding Summary (1)
Umbrella: T.80 [1992] JPEG: T.81 (Part I), lossy and loss-less [1992]; T.83 (Compliance testing) [1994]; T.85 (Extensions, defs & testing) [1996]; T.85 Corr.1 [1999]; T.86 Registration of JPEG Profiles [1998]; T.87 (Baseline) Lossless and near-lossless compression of continuous-tone still images [1998] JPEG2000: T.800, Core Coding System [2002]; T.803 Conformance Testing [2002] ; T.804 Reference Software [2002] (other parts of the JPEG2000 standard will be ISO/IEC-only texts. JBIG: T.82, loss-less [1993]; T.82 Corr.1 [1995]; T.85 JBIG for fax terminals; T.85 Amd.1 [1996], 2 [1997]; T.85 Corr.1 [1997]; T.88 Lossy/lossless coding of bi-level images [2000]; T.89 Application profiles for Recommendation T.88 [2000]

104 Still Image Coding Summary (2)
Planned new common texts: T.800: Part 1, JPEG 2000 Image Coding System: Core Coding System T.801: Part 2, JPEG 2000 Image Coding System: Extensions T.802: Part 3, Motion JPEG 2000 T.803: Part 4, Conformance Testing T.804: Part 5, Reference Software T.805: Part 6, Compound Image File Format T.806: Part 7, Technical Report: Guideline of minimum support function of Part-1

105 ITU-T Video Coding H.261: Video Codec for A/V services at p x 64 kbit/s The first practical video coding standard (1990) Used today in (ISDN) video conferencing systems Bit rates commonly 40 kbit/s to 2 Mbit/s H.262: Same as MPEG-2/Video (ISO/IEC ) Commonly used for entertainment-quality video applications The first practical standard for interlaced video Used in digital cable, digital broadcast, satellite, DVD, etc. Bit rates commonly 4-20 Mbit/s

106 ITU-T Video Coding (continued)
H.263: Video Coding for Low Bit Rate Communication Significantly improved video coding compression performance (especially at very low rates, but also at higher rates as well) The first error and packet loss resilient video coding standard Used in Internet protocol, wireless, and ISDN video conferencing terminals (H.323, H.324, 3GPP, etc.) “Baseline” core mode interoperable with MPEG-4/Video Rich set of features for many applications Very wide range of bit rates and possible applications

107 Non-ITU-T Video Coding
MPEG-1/Video (ISO/IEC ) The first video coding standard using half-pel motion compensation Typical bit rates 1-2 Mbits/s MPEG-4/Visual (ISO/IEC ) [DivX] The first video coding standard defining arbitrary object shapes Many creative features for synthetic and synthetic-natural hybrid content Contains essentially all features of all prior standard codec designs Interoperable with ITU-T H.263 “baseline” Very wide range of bit rates and possible applications


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