International Telecommunication Union Global Standards for Converged Communication

International Telecommunication Union Global Standards for Converged Communication Services Chae Sub Lee Vice-Chairman of ITU-T SG 13 ETRI, Korea (Rep. of) ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006 Page -

Contents 1. Convergence Platform: NGN 2. Status of Current Voice 3. Requirements for future Voice 4. Conclusion ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

1. Convergence Platform: NGN Key Trends of Convergence Network Convergence: Internet, NGN etc. Service Convergence: FMC, IPTV etc. Terminal Convergence: PC, PDA, Int. Phones etc. Business Convergence: Triple Play, Q Play etc. Fundamental Core Service: Voice ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

1. Convergence Platform: NGN Key Points for enabling Convergence Independence between Services and Transport Separation between Access and Core Networks Access agnostic provision of Networks/Services Multi Functional Terminals Unified/Integrated Id Management: Service, User etc. Unified/Integrated ABC (Accounting, Billing and Charging) Regulations for Convergences ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

1. Convergence Platform: NGN Definition of NGN ITU-T Rec. Y. 2001 Next Generation Network (NGN): a packet-based network able to provide telecommunication services and able to make use of multiple broadband, Qo. S-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. It enables unfettered access for users to networks and to competing service providers and/or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users. ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

1. Convergence Platform: NGN Key Principles of NGN Open architecture: open to support service creation, service updating, and incorporation of service logic provision by third parties and also support “Distributed control” as well as enhanced security and protection. Independent provisioning: service provision process should be separated from network operation by using distributed, open control mechanism to promote competition. Multiplicity: The NGN functional architecture shall offer the configuration flexibility needed to support multiple access technologies. ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

1. Convergence Platform: NGN in 4 words… • by Fixed • by Mobile • by Wireless NGN = Broadband Managed IP Network • for Services • for Businesses • for Players • for Users ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

1. Convergence Platform: NGN Regulatory Implication of NGN Pre-NGN Video Services (TV, movie, etc) Telephone Services Data Services (WWW, e-mail, etc) Video Services Network Telephone Services Network Data Services Network New Policy Regulation Environment (Horizontal) New Business Environment (Compositional) Service-based Pol. /Reg. Voice Internet Video MM Access Network Provider Domain Pol. Reg. ANP 1 (DSL) Service/Application Provider Domain SP m SP 1 SP 2 SP 3 ANP 2 (DSL) IP (Future Packet ? ) Platform ANP 3 (Opt) Pol. X Reg. x x. DSL/Optic based Fixed-Mobile User ANP N (Cable) Resource-based Pol. /Reg. ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006 CNP 1 CNP 2 CNP 3 Core Network Provider Domain

1. Convergence Platform: NGN; a Convergence Platform Combination IP with Broadband accelerating intrinsic convergence • Service convergence: Web based service provisioning • Network convergence: IP over any broadband transport networks Advanced Mobile and Wireless technology initiate business convergence such as Fixed-Mobile convergence Broadband Fixed, Wireless and Mobile technology boost another business convergence, called “Multiple Play: Tele-Broadcasting” Tele. Broadcasting FMC NGN ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

1. Convergence Platform: NGN; Enablers for Convergence Business/Application oriented projects Limited Services FMC BE IP Limited BB N G N • Simple linkage btw layers • Simple business relationships • Simple players RFID IPTV Others Managed IP Converged Broadband • Simple linkage btw layers with dynamics • Diverse and Flexible business relationships • Diverse business models and players ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

1. Convergence Platform: NGN; Enablers for FMC Unified Service/Control Platform, merge all kind of network as access technology. APP Server HSS Session/Service Control Component NGN 3 G RAN 2 G RAN Wi. Fi Broadband Ref: Fixed Mobile Convergence’s Standardization, Baofeng, Huawei, ITU-T/IETF Joint Workshop on NGN Geneva, 1 -2 May 2005 ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

1. Convergence Platform: NGN as an Infrastructure for IPTV TV Qo. S, Traffic control, Security, X-casting, Accounting etc. IP 802. xx Access x. DSL Cable Domain 1 Int. Serv Domain 2 Diff. Serv Domain 3 MPLS-TE Domain 4 Over-Prov Multi-Service Packet Transport NGN 2 G/3 G Wireless Integrated Qo. S, Traffic control, Security, Multi services etc. ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

2. Status of Current Voice Status of Voice Quality • During the last 20 years, big improvement in Use of Voice • But during the last 20 years, no improve in Quality of Voice • Cost/Price oriented policy, but change to Quality based 7 k. Hz Audio Class 3. 1 k. Hz Audio Class PSTN ISDN 2 G 3 G Vo. IP ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006 NGN(? )

2. Status of Current Voice Status of Voice Codecs q PSTN: G. 711 q Mobile communication: AMR for 3 GPP, EVRC for 3 GPP 2 q Vo. IP: G. 729, G. 729. 1, G. 711, G. 723. 1, G. 726, ILBC q NGN ? Too many speech codecs prevent Vo. IP interoperability. ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

2. Status of Current Voice Standard Codec of ITU-T q Narrowband Codec q Wideband Codec 1972 • G. 711 64 kbps 1988 • G. 722 48, 56, 64 kbps 1988 • G. 726 13, 24, 32, 40 kbps 1999 • G. 722. 1 24, 32 kbps 2001 • G. 722. 2 ~23. 8 kbps 2006 • G. 729. 1 8~32 kbps 1992 • G. 728 16 kbps 1995 • G. 723. 1 5. 3/6. 3 kbps 1996 • G. 729 6. 4, 8, 11. 8 kbps ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

2. Status of Current Voice Standard Codec for Wireless Communication q 3 GPP 2 q 3 GPP 1993 • IS-96 A Rate Set 1 1994 • EVRC Rate Set 1 1995 • QCELP 13 k Rate Set 2 2001 2004 • SMV Rate Set 1 1989 • FR 13 kbps 1995 • HR 5. 6 kbps 1996 • EFR 12. 2 kbps 1999 • AMR-NB Multi-rate 2000 • AMR-WB Multi-rate 2004 • AMR-WB+ • VMR-WB Rate Set 2 Most of SDO provides wideband codec to provide better speech quality… ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

3. Requirements for Future Voice Common Medias for Services: Voice + Audio n Beyond Telephone Terminal - Multi-service, multi-mode, and Multimedia Convergence - Mobile Phone, Wi. Fi Phone, PDA etc. Multi-mode: Wi. Fi, CDMA/GSM, , Telephony, SMS, Presense, PTT Music play, Mobile game & talk Cinema play, Mobile TV e-Learning. e-Commerce(e. g. credit card) ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

3. Requirements for Future Voice Basic Requirenents of Voice in NGN þ NGN is BB IP network, but quality of Vo. IP is poor - Qo. S of network becomes better and better - BW grows more and more with low cost Quality Improvements þ Different Standards for different networks - Trans-coding causes quality degradation - Trans-coding needs more cost Minimize Trans-coding þ Too many SDO on media codec - ITU-T, 3 GPP 2, IETF, MPEG - No convergence codec foreseen service Convergence Codec(s) ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

3. Requirements for Future Voice Improve Quality of Voice and Audio Narrowband Quality • Frequency band limited to 300~3, 400 Hz Wideband quality • Frequency band extended to 50 - 7, 000 Hz - More natural, Better intelligibility - Increased sensation of presence ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

3. Requirements for Future Voice + Audio + Video Convergence Dual-mode Phones Wi. Fi Phone +C om m un ica Mobile Phone MP 3 Player Mobile TV + r e t n E tio n nm i a t n e t ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

3. Requirements for Future Voice Features of Latest Codec Standards q High flexibility provided by "scalability" features • Bit-rate scalability and Interoperability - G. 729. 1: 8 ~ 32 kbps and having legacy G. 729 mode • VBR codec providing Bandwidth Scalability - G. 729. 1: 8, 12 kbps : Narrowband(300 -3, 400 Hz), 14~32 kbps: Wideband(50 -7, 000 Hz) - AMR-WB: 9 kinds of mode upto 23. 85 Kbit/s q Very high robustness to packet loss ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

3. Requirements for Future Voice ps 1 kb 110 32 01. . 00 s 24 kbp 10 10110 01. . 00 Scalability of Codec – G. 729. 1 as an Example bps 16 k 1011 All IP Network s bp 11 0 11 10 0 . . 0 1 00 10 24 8 k s p kb . 00 001. No transcoding operation by Media Gateway ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

4. Conclusion For Future Communications o Provision of Excellent Quality • NGN should support Better quality than PSTN and Mobile e. g. Transparent Speech Quality compared /w 16 bit PCM Voice • This could create new equipment and service market o Provision of Seamless Speech and Audio Convergence • NGN should support “Seamless Handover” over FMC environments • NGN should support Multimedia services over various convergences • Single Codec providing Speech & Music Communications • This could provide better quality and lower cost for MM convergence and Post-mobile terminal • No trans-coding should be target of NGN ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

4. Conclusion NGN Release 2 Vision (Temporary) o Vision* of Mobility and Codec • Mobility vision: Support handover, including seamless handover • Codec Vision: Support a wide range of services including FMC Scope Depth Mobility Service continuity with both Handover and Seamless Handover Access Network and/or Core Network Same operator or between operators Heterogeneous and/or Homogeneous List of Access Networks including: x. DSL; FTTx; Mobile access(es); Wireless Access(es) etc Codec(s) Recommendation on: narrowband audio codec(s) wideband audio codec(s) video codec(s) Voice in Fixed/Mobile convergence Telecom-Broadcasting convergence Multimedia in FMC, including addition of Telecom-Broadcasting convergence Application areas Convergences Quality Mechanism Service characteristics Constraints Etc Time End of 2008 or 2009 * This vision/plan was discussed at the last NGN-GSI event, January Beijing 2007. It is need further development. ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

4. Conclusion Next Direction of Global Standardization Vo. IP Messaging N-IDs IPTV Others Qo. S, Security, Media Handling etc NGN Fixed-BB-AN* Wireless-BB-AN Mobile-BB-AN Broadband Core-T Int. Con. R-BCS-BB-AN** * Include cable based Broadband Access Network technology ** means radio based broadcasting transport capabilities include satellite means ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006

Thank you for your attention !!! ITU Workshop “Future of Voice“, Geneva, 15 -16 January 2006