NGN : current and beyond

21st CJK UNIOT-WG

2011.7.11-13

TTCYoshinori Goto(goto.yoshinori@lab.ntt.co.jp)

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NGN: current architecture

•The current version of NGN architecture was published in April 2010.

Service Stratum

Transport Stratum

Transport Functions

Transport Control Functions

Service Control and Content Delivery Functions

External Applications

Application Support Functions and Service Support Functions

Service Control Functions

Content Delivery Functions

Network Attachment and Control Functions

Resource and

Admission control

Functions

Mobility Management and Control Functions

End-User Functions

Functions from Other

Networks

Functionsfrom other

Service Providers

ANI

NNI

SNI

UNI

Service User Profiles

Transport User Profiles

IdM Functions

Man

agem

ent F

unct

ions

Control

Media

Management

IdM

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NGN: current status

•NGN capability set 2 (Y.2007) covers 18 capabilities;• Transport connectivity, communication modes, transport network

component, network attachment, IPv6, multicast, routing, QoS, identification/authentication/authorization, security, management, mobility management, codecs, operations/provisioning, interconnection/interworking, PSTN/ISDN emulation and simulation, IPTV (incl. QoE and security) and public interest

•There would be unmet demands for future versions of NGN.• Because of this, SG13 is working on various new capabilities such as

MCC, OSE/SIDE, USN, MOC, IOT, id-loc etc.

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Items beyond current NGN

•OSE/SIDE : OSE architecture was approved. SIDE architecture is being developed. Possible unification of OSE/SIDE will be considered.•Id-loc : Y.2022 (Y.FAid-loc-split) was consented. But neither Y.2007 nor Y.2012 covers this capability. In addition, network based scheme has not yet initiated.•RACF (Y.2111Rev2) : This revision tries to cover new capabilities such as interwork with non-NGN IP NW, 3GPP and 3GPPS, wholesale, time-shifted TV, QoS downgrading and IPTV service by invitation that are not fully considered in more general architecture.•DPI : Being discussed in Q17.•DSN : Being discussed in Q19.•IoT : IoT is in initial stage.

•There are more,,,,

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A new challenge for NGN

•As NGN technologies become mature, the architecture becomes more complicate.

•Inconsistent standard is no longer considered.• Consistency is a minimum requirement for standard (from industry

viewpoint).•Checking consistency is a painful work.

• Need to go through all the relevant outputs in detail.• Particularly, those who want to bring innovative ideas.

•Spend a lot of time for this kind of useless debates,,,

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SUN from NGN viewpoint

•From discussion at NGN-GSI (TD741/NGN-GSI)• Beyond NGN• Succeeding some features of NGN, e.g. packet based network.• (Trying to) incorporate new features such as knowledgeable, context-

aware, adaptable, autonomous and programmable.•Possible study approaches for SUN

• SUN with alternative architecture: SUN is a different network architecture from NGN.

• SUN as an evolution of NGN: NGN will evolve to SUN.• SUN as a collection of network technologies: SUN is not an

architecture by itself.

NGN

SUN

Evolution ?

Alternative architecture?

SUN

Collection of technologies?

knowledgeableContext-aware

adaptable autonomous

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Conclusions

•The development of NGN is continued even after Y.2007 and Y.2012.•As NGN architecture becomes mature and complex, addition of new capabilities maintaining consistency is increasingly difficult.•We need a new way to avoid useless debates (to make everyone happy).•SUN as a separated concept from NGN could be a good vehicle for new ideas, although the basic concept is not fully agreed.•Some of current ongoing items for NGN could be considered as candidate items for SUN before incorporated in NGN.