Architectural Overview of NGN
(including IPTV)
Chae Sub Lee
(chae-sub.lee@ties.itu.int)
Vice-Chairman of ITU-T SG13
Vice-Chairman of ITU-T FG IPTV
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
Content
1. Direction from definition
2. NGN Architectural Frameworks
3. IPTV Architectural Frameworks
ITU-D/ITU-T Seminar on Standardization and Development of Next Generation
4. Remaining works
5. Future Plan
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
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1. Direction from definition
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
ITU-T
technologies and in which service-related functions
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are independent
fromand
underlying
transport-related
technologies.
Rec.
Y.2001
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-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
1. Direction from definition
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.
ITU-D/ITU-T Seminar on Standardization and Development of Next Generation
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.
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1. Direction from definition
Definition of IPTV
IPTV is defined as multimedia services such as
television/video/ audio/text/graphics/data
delivered over IP based networks managed to
provide the required level of QoS/QoE, security,
interactivity and reliability
ITU-D/ITU-T Seminar on Standardization and Development of Next Generation
• Multimedia Services
More than
TV distribution
• Over IP based networks
• Managed capabilities
IP
Scope
Of
IPTV
QoS/QoE, Security
Interactivity, Reliability
ITU-T IPTV FG 2nd meeting, October 2006, Busan Korea
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
2. NGN Architectural Frameworks
NGN Basic Reference Model
Separation Transport (Access and Core) from Services
But keeping 3 Planes for basic function: User, Control
and Management
Management Plane
Control Plane
User Plane
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NGN Service Layer
Management Plane
Control Plane
User Plane
NGN Transport Layer
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2. NGN Architectural Frameworks
NGN architecture overview (Rec. Y.2012)
Applications
ANI
Management Functions
Application Support Functions & Service Support Functions
Service User
Profiles
Service Control
Functions
Service stratum
ITU-D/ITU-T Seminar on Standardization and Development of Next Generation
Network Attachment
Control Functions
Resource and
Admission
Control Functions
Transport User
Profiles
End-User
Functions
Other
Networks
Transport Control Functions
Transport Functions
UNI
NNI
Transport stratum
Control
Media
Management
Note:ITU-D/ITU-T
UNI/NNI/ANI
not meant to
specific
interfaces.
Seminarare
on Standardization
andrepresent
Development any
of NGN
for Arab Region
2. NGN Architectural Frameworks
Overview of NGN Release 1
Service delivery
platform making use of
NGN easily
Applications
Service Stratum
A variety of
mobile and fixed
terminals and
their profile
management
targeting at FMC
Application Support Functions and
Application
Functions
Service Support
Functions
S. User
Profile
Functions
Other NGN Service
Components
Service
Control
Functions
ITU-D/ITU-T Seminar on Standardization and
Development
of
IP Multimedia
Component
IP Multimedia
Legacy
Terminals
Legacy
Terminals
Customer
Networks
NGN
Terminals
End-User
Functions
&PSTN/ISDN
Simulation
Service Component
GW
GW
Network Attachment
Network Access
T. User
User
Control Functions
Profile
Profile Attachment
(NACF)
Functions
Functions
Functions
AccessTransport
Network
Access
Functions
Functions
Edge
Functions
Resource and Admission
Control Functions
(RACF)
Re-use and
adaptation of
IMS to
Next3GPP
Generation
provide
multimedia
services
Other Networks
PSTN/ISDN Emulation
Service Component
Evolution
scenario of PSTN
and short-term
solution
A unified IP network
with improved
security and QoS
Core Transport
Core transport
Functions
Functions
Transport Stratum
Border gateways
* Note: Gateway (GW) mayMedia
exist in either
Transportto
Stratum or End-User
processing
Broadband access
able
Functions.
enabling secure
assist content delivery
to provide IPTV
interworking
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
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2. NGN Architectural Frameworks
Towards for Agnostic …
Pre-NGN
Video
Services
(TV, movie,
etc)
Telephone
Services
Data
Services
(WWW,
e-mail, etc)
Video
Services
Network
Telephone
Services
Network
Data
Services
Network
Transport Agnostic
Access Agnostic
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Service-based Pol./Reg.
Voice Internet Video
Pol.
Pol.
Reg.
MM
Service/Application
Provider Domain
Access Network
Provider Domain
SP1SP2SP3
ANP 1 (DSL)
SPm
ANP 2 (DSL)
IP (Future Packet ?) Platform
CNP
1
ANP 3 (Opt)
Pol.
Pol. X
Reg. x
User
CNP
3
ANP N (Cable)
xDSL/Optic based FixedFixed-Mobile
CNP
2
Core Network
Provider Domain
Resource-based Pol./Reg.
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
2. NGN Architectural Frameworks
Works on RACF in ITU-T
Service Control Functions
Service Stratum
Rp
Network Attachment
Control Functions
intraintradomain
interinterdomain
Rd
Transport
Resource
Control
Function
Ru
Rt
Policy
Decision
Function
Ri
RACF
Other NGNs
Rs
Transport Stratum
Rc
Rn
Rw
Transport
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Policy
Enforcement
Function
Transport Functions
o Policy Decision Function
service facing, transport independent
o Transport Resource Control Function
service independent, transport dependent,
network-segment specific
o Policy Enforcement Function
typically part of border transport elements
Enforcement
Function
RACF
Augments native transport QoS support
Preempting transport congestion at the
service control layer
Protecting ongoing premium traffic
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2. NGN Architectural Frameworks
High Level Requirements of NACF
Dynamic provision of IP address and other
user equipment configuration parameters
(e.g. using DHCP).
User authentication, prior or during the IP
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address
allocation
procedure.
Authorization of network access, based on
user profile.
Access network configuration, based on user
profile.
Location management.
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
2. NGN Architectural Frameworks
Functional Architecture of NACF
Service Control Functions
Service Stratum
Transport Stratum
NACF
NACF
TC-Ux
S-TC1
HGWC-FE
TC-U1
TC-TC1
TLM-FE
Nc
TAA-FE
TAA-FE
PD-FE
Ne
NAC-FE
Other NGNs
Nb
Ng
Nh
TUP-FE
TUP-FE
RACF
RACF
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Nk
and Development of Next Generation
Na
Nd
AM-FE
CPE
TC-T1
AR-FE
Transport Functions
Transport Functions
NAC-FE (Network Access Control Functional Entity)
AM-FE (Access Management Functional Entity)
TLM-FE (Transport Location Management Functional Entity)
TAA-FE (Transport Authentication and Authorization Functional Entity)
TUP-FE (Transport User Profile Functional Entity)
HGWC-FE (Home GateWay Configuration Functional Entity)
AR-FE (Access Relay Functional Entity)
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
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3. IPTV Architectural Frameworks
NGN as an Infrastructure for IPTV
TV
QoS, Traffic control, Security,
X-casting, Accounting etc.
IP
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802.xx
Access
Cable
Domain 1
IntServ
Domain 2
DiffServ
Domain 3
MPLS-TE
Domain 4
Over-Prov
2G/3G
Wireless
xDSL
Multi-Service Packet Transport
Integrated QoS, Traffic control,
Security, Multi services etc.
NGN
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
3. IPTV Architectural Frameworks
IPTV – NGN Mapping
Applications
Service Stratum
Application Support
Functions and
Service Support Functions
Application
Functions
S. User
Profile
Functions
Other NGN
Service Components
Service
Control
Functions
IPTV Service
Component
IP Multimedia
Component
IP Multimedia
&PSTN/ISDN Simulation
Other Networks
PSTN / ISDN Emulation
Service Component
Component
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Development
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GW
Legacy
Terminals
Legacy
Terminals
GW
Network Access
T.User
User Network Attachment
Control Functions
Profile
ProfileAttachment
Functions
(NACF)
Functions
Functions
Customer
Networks
Access
Network
Access Transport
Functions
Functions
NGN
Terminals
End-User
Functions
Edge
Functions
Resource and Admission
Control Functions
(RACF)
Core
Transport
Core
transport
Functions
Functions
Transport Stratum
Figure 1.
Future revision of Figure 8/Y.2012: NGN components including IPTV service component
* Ref: NGN-GSI Output Document T05-NGN.GSI-0067R1
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3. IPTV Architectural Frameworks
IPTV on NGN with distributed servers
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* Ref: ATIS-0800002, IPTV Architecture Requirements
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
3. IPTV Architectural Frameworks
High level view of IPTV over NGN
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* Ref: ATIS-0800002, IPTV Architecture Requirements
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3. IPTV Architectural Frameworks
Architectural Approach
IPTV Services and Applications
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Non-NGN based
Environments
Non-IMS
IMS
NGN based Environments
IP based Network Environments
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
3. IPTV Architectural Frameworks
NGN (but non-IMS) Based IPTV Delivery Architecture
Customer
Application
Client
Application Components
Transaction Protocol
IPTV
Application
IPTV Subscriber
Management
Service Support Functions
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Media
Client
Delivery Protocol
Multicast Control
Distribution &
Delivery
Broadcast & VoD
NGN Service Stratum
IPTV
Control Client
User Profile
Functions
Control
Protocol
IPTV Control
Service Control Functions
IPTV Device
Customer
Transport
Authentication &
Configuration Protocol
Network Attachment
Control Functions
(NACF) [T-user Profile]
Resource &
Admission Control
Functions (RACF)
Control
Functions
NGN Transport Stratum
Delivery Network
Gateway
Functions
Access Network
Functions
Edge
Functions
Core Transport
Functions
Transport
Functions
On-going
Discussion
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3. IPTV Architectural Frameworks
IMS Based IPTV Delivery Architecture
Customer
Application
Client
Application Components
Transaction Protocol
IPTV
Application
IPTV Subscriber
Management
Service Support Functions
ITU-D/ITU-T Seminar on Standardization and Development of Next Generation
Media
Client
Delivery Protocol
Multicast Control
Distribution &
Delivery
Broadcast & VoD
NGN Service Stratum
Core
IMS
Session
Protocol
Session
Client
Service Control Functions
IPTV Device
Customer
Transport
S-User Profile
Functions
Authentication &
Configuration Protocol
Network Attachment
Control Functions
(NACF) [T-user Profile]
Resource &
Admission Control
Functions (RACF)
Control
Functions
NGN Transport Stratum
Delivery Network
Gateway
Functions
Access Network
Functions
Edge
Functions
Core Transport
Functions
Transport
Functions
On-going
Discussion
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
4. Remaining Works
Remaining Works in NGN and IPTV
o NGN R1 frameworks are almost finished
• Protocol developments has been started:SG11
• NGN R2 Requirements are being developed
• FRA 2, RACF 2 and NACF also started for R2
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• Need more works to support
Services/Applications over NGN
o IPTV is just being developed
• Definition, Requirements and Architecture
• Need more detailed functional studies; IPTV
service components, Middleware PF, STB etc.
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5. Future Plan
NGN Architecture Standard Roadmap
(incorporating IPTV architecture)
Proposed Document structure for NGN Release 2
Stage 1
(Requirements)
NGN-R2-scope
NGN-R2-scope
(TRY.NGN-R2-scope)
(TRY.NGN-R2-scope)
on
NGN-R1-scope
NGN-R1-scope
In
In Sup1
Sup1 to
to Y.2000
Y.2000
IPTV
IPTV reqts
reqts
In
In Y.2xxy
Y.2xxy
Multicast
Multicast and
Standardization
(Y.mcastsf)
(Y.mcastsf)
NGN-Security-R2
NGN-Security-R2
In
In Y.2701
Y.2701
Open
Open service
service env.
env.
(Y.openenv)
(Y.openenv)
IDserv
IDserv
(Y.idserv)
(Y.idserv)
MDS
MDS
(Y.MDS-req)
(Y.MDS-req)
NGN-R1-reqts
NGN-R1-reqts
In
In Y.2201
Y.2201
Web
Web service
service conv.
conv.
(Y.wsconv)
(Y.wsconv)
Stage 3
(Signaling)
Functional
Functional
Architecture-R2
Architecture-R2
In
In Y.2012
Y.2012
NGN-R2-reqts
NGN-R2-reqts
In
In Y.2201
Y.2201
---
IPTV
IPTV service
service
scenario
scenarioSeminar
ITU-D/ITU-T
In
In Sup?
Sup? to
to
Y.2000
Y.2000 series
series
Stage 2
(Architecture)
IPTV
IPTV service
service
component
component
In
In Y.2yxx
Y.2yxx
Development
of Next
Generation
Multicast
Multicast Arch.
Arch.
(Y.mcastfa)
(Y.mcastfa)
Sec
Sec mechanism
mechanism
(Y.secmech)
(Y.secmech)
IP
IP multimedia
multimedia
Service
Service –R2
–R2
In
In Y.2021
Y.2021
ISDN/PSTN
ISDN/PSTN
Emulation-R2
Emulation-R2
In
In Y.2031
Y.2031
RACF-R2
RACF-R2
In
In Y.2111
Y.2111
NACF-R2
NACF-R2
(Y.NACF)
(Y.NACF)
---
Scope
(Service)
ITU-D/ITU-T Seminar on Standardization and Development of NGN for Arab Region
Thank you for
your attention !!!
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