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Global Standards for Converged Communication Services

Global Standards for Converged Communication Services. Chae Sub Lee Vice-Chairman of ITU-T SG13 ETRI, Korea (Rep. of). Contents. Convergence Platform: NGN Status of Current Voice Requirements for future Voice Conclusion. 1. Convergence Platform: NGN. Key Trends of Convergence.

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Global Standards for Converged Communication Services

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  1. Global Standards for Converged Communication Services Chae Sub Lee Vice-Chairman of ITU-T SG13 ETRI, Korea (Rep. of)

  2. Contents • Convergence Platform: NGN • Status of Current Voice • Requirements for future Voice • Conclusion

  3. 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

  4. 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

  5. 1. Convergence Platform: NGN Definition of NGN Next Generation Network (NGN): a packet-based network able to provide telecommunication services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functionsare 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-T Rec. Y.2001

  6. 1. Convergence Platform: NGN Key Principles of NGN • Open architecture: open to support service creation, service updating, and incorporation of service logicprovision 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.

  7. 1. Convergence Platform: NGN NGN in 4 words… • by Fixed • by Mobile • by Wireless NGN = Broadband Managed IP Network • for Services • for Businesses • for Players • for Users

  8. 1. Convergence Platform: 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 Service-based Pol./Reg. New PolicyRegulation Environment (Horizontal) New Business Environment (Compositional) Service/Application Provider Domain Access Network Provider Domain Pol. Reg. SP3 SP1 SP2 SPm Voice Internet Video MM ANP 1 (DSL) ANP 2 (DSL) CNP 1 IP (Future Packet ?) Platform CNP 2 Pol. X Reg. x ANP 3 (Opt) Resource-based Pol./Reg. xDSL/Optic based Fixed-Mobile CNP 3 User ANP N (Cable) Core Network Provider Domain Regulatory Implication of NGN

  9. 1. Convergence Platform: NGN 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” FMC Tele-Broadcasting NGN

  10. 1. Convergence Platform: NGN NGN; Enablers for Convergence Business/Application oriented projects Limited Services FMC RFID IPTV Others BE IP Managed IP N G N Limited BB Converged Broadband • Simple linkage btw layers • Simple business relationships • Simple players • Simple linkage btw layers with dynamics • Diverse and Flexible business relationships • Diverse business models and players

  11. 1. Convergence Platform: NGN NGN; Enablers for FMC Unified Service/Control Platform, merge all kind of network as accesstechnology. APP Server HSS Session/Service Control Component NGN 3G RAN 2G RAN Broadband WiFi Ref: Fixed Mobile Convergence’s Standardization, Baofeng, Huawei, ITU-T/IETF Joint Workshop on NGN Geneva, 1-2 May 2005

  12. 1. Convergence Platform: NGN 802.xx Access xDSL Domain 2DiffServ Domain 3MPLS-TE Domain 1IntServ Domain 4Over-Prov Cable 2G/3G Wireless Multi-Service Packet Transport Integrated QoS, Traffic control, Security, Multi services etc. NGN NGN as an Infrastructure for IPTV TV QoS, Traffic control, Security, X-casting, Accounting etc. IP

  13. 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 kHz Audio Class 3.1 kHz Audio Class NGN(?) 2G 3G VoIP ISDN PSTN

  14. 2. Status of Current Voice Status of Voice Codecs • PSTN: G.711 • Mobile communication: AMR for 3GPP, EVRC for 3GPP2 • VoIP: G.729, G.729.1, G.711, G.723.1, G.726, ILBC • NGN ? Too many speech codecs prevent VoIP interoperability.

  15. 2. Status of Current Voice Standard Codec of ITU-T • Narrowband Codec • Wideband Codec • G.711 64kbps • G.722 48,56,64kbps 1988 1972 • G.726 13,24,32,40kbps 1999 1988 • G.722.1 24,32kbps • G.722.2 ~23.8kbps 2001 • G.728 16kbps 1992 • G.729.1 8~32kbps 2006 1995 • G.723.1 5.3/6.3kbps 1996 • G.729 6.4,8,11.8kbps

  16. 2. Status of Current Voice Standard Codec for Wireless Communication • 3GPP2 • 3GPP • FR 13kbps 1989 1993 • IS-96A Rate Set 1 • HR 5.6kbps 1995 1994 • EVRC Rate Set 1 • EFR 12.2kbps 1996 1995 • QCELP 13k Rate Set 2 • AMR-NB Multi-rate 1999 2001 • SMV Rate Set 1 • AMR-WB Multi-rate 2000 2004 • VMR-WB Rate Set 2 2004 • AMR-WB+ Most of SDO provides wideband codec to provide better speech quality…

  17. 3. Requirements for Future Voice Multi-mode: WiFi, CDMA/GSM,, Telephony, SMS, Presense, PTT Music play, Mobile game & talk Cinema play, Mobile TV e-Learning. e-Commerce(e.g. credit card) Common Medias for Services: Voice + Audio • Beyond Telephone Terminal • Multi-service, multi-mode, and Multimedia Convergence • Mobile Phone, WiFi Phone, PDA etc.

  18. 3. Requirements for Future Voice Basic Requirenents of Voice in NGN • NGN is BB IP network, but quality of VoIP is poor - QoS of network becomes better and better • BW grows more and more with low cost • Quality Improvements • Different Standards for different networks - Trans-coding causes quality degradation - Trans-coding needs more cost Minimize Trans-coding • Too many SDO on media codec - ITU-T, 3GPP, 3GPP2, IETF, MPEG - No convergence codec for foreseen service Convergence Codec(s)

  19. 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 -7,000Hz • - More natural, Better intelligibility • - Increased sensation of presence

  20. 3. Requirements for Future Voice Mobile Phone Voice + Audio + Video Convergence Dual-mode Phones WiFi Phone + Communication MP3 Player + Entertainment Mobile TV

  21. 3. Requirements for Future Voice Features of Latest Codec Standards • High flexibility provided by "scalability" features • Bit-rate scalability and Interoperability - G.729.1: 8 ~ 32kbps and having legacy G.729 mode • VBR codec providing Bandwidth Scalability • G.729.1: 8, 12kbps : Narrowband(300-3,400Hz), 14~32kbps:Wideband(50-7,000Hz) • AMR-WB: 9 kinds of mode upto 23.85Kbit/s • Very high robustness to packet loss

  22. 3. Requirements for Future Voice 32kbps 1011001..001101 24kbps 1011001..00 16kbps All IP Network 1011001..00 8kbps 24kbps 10110 1011001..00 No transcoding operation by Media Gateway Scalability of Codec – G.729.1 as an Example

  23. 4. Conclusion For Future Communications • 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 • 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

  24. 4. Conclusion NGN Release 2 Vision (Temporary) • Vision* of Mobility and Codec • Mobility vision: Support handover, including seamless handover • Codec Vision: Support a wide range of services including FMC * This vision/plan was discussed at the last NGN-GSIevent, January Beijing 2007. It is need further development.

  25. 4. Conclusion Next Direction of Global Standardization VoIP Messaging N-IDs IPTV Others QoS, Security, Media Handling etc NGN Fixed-BB-AN* Broadband Core-T Int- Con. Wireless-BB-AN Broadband Core-T Mobile-BB-AN R-BCS-BB-AN** * Include cable based Broadband Access Network technology ** means radio based broadcasting transport capabilities include satellite means

  26. Thank you for your attention !!!

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