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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

Global Standards for Converged Communication Services

Chae Sub Lee

Vice-Chairman of ITU-T SG13

ETRI, Korea (Rep. of)

contents
Contents
  • Convergence Platform: NGN
  • Status of Current Voice
  • Requirements for future Voice
  • Conclusion
slide3

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

slide4

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
definition of ngn

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

key principles of ngn

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.
ngn in 4 words

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
slide8

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

ngn a convergence platform

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

ngn enablers for convergence

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
ngn enablers for fmc

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

ngn as an infrastructure for iptv

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

status of voice quality

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

status of voice codecs

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.

standard codec of itu t

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
standard codec for wireless communication

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…

common medias for services voice audio

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.
basic requirenents of voice in ngn

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)

slide19

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
voice audio video convergence

3. Requirements for Future Voice

Mobile Phone

Voice + Audio + Video Convergence

Dual-mode Phones

WiFi

Phone

+ Communication

MP3 Player

+ Entertainment

Mobile TV

features of latest codec standards

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
slide22

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

slide23

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
slide24

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.

next direction of global standardization

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

slide26

Thank you for

your attention !!!