ITU-T / ATIS Workshop
“Next Generation Technology and Standardization”
Las Vegas, 19-20 March 2006
An Implementable NGN
Architecture
Charles “Chuck” Bailey
Executive Director
AT&T Laboratories
ITU-T
ATIS INITIATIVES – NGN GOALS
o End-to-End Service View
o Interoperability – a KEY Issue
o Business Driven – Services to Customers
o Implementable Standards and Solutions
ATIS’s NGN Initiative was formed
with these goals in mind
ITU-T
ITU-T / ATIS Workshop “Next Generation Technology and
Standardization“
Las Vegas, 19-20 March 2006
2
NGN Architecture
o NGN Architecture should have the Following:
• IP Based
• Multimedia Capable
• IMS Based Core
• Services Capable of Continuity
• Multiple Networks and Carriers
• Emergency Services and Government Support
ITU-T
ITU-T / ATIS Workshop “Next Generation Technology and
Standardization“
Las Vegas, 19-20 March 2006
3
Major Standards Bodies Undertaking NGN Work
o ITU-T
• Study Groups 2, 4, 11, 13, 19
• NGN Focus Group > Global Standards Initiative (GSI)
o ATIS
• NGN Focus Group (from Mobile Wireless Svcs FG)
• PTSC, PRQC, etc
o ETSI
• TISPAN
o 3GPP
• Services & System Aspects (SA)
• Core Network & Terminals (CT)
ITU-T
ITU-T / ATIS Workshop “Next Generation Technology and
Standardization“
Las Vegas, 19-20 March 2006
4
NGN Architecture
Wireless Provider (e.g. 3GPP)
IP Applications Farm
PSTN
Service SIP Network
IMS SIP Network
SIP Registry &
Presence Server
P-CSCF
(SIP Access Proxy)
Carrier Applications and
IP Applications Farm
PSTN
Gateway
Um Interface
IMS/NGN
Infrastructure
MCU
Carrier
Network
SIP Registry &
Presence Server
Mobile
SIP Phone
SIP Registry &
Presence Server
SIP Access Proxy
802.11X
Another
Carrier
IP BE
IP BE
IP BE
802.11X
Hot spot
AR
AR
DSL, cable, etc
Access Network
DSL, cable, etc
Access Network
Wireless AP
AR
DSL, cable, etc
Access Network
Cable/DSL Modem
SIP Access Proxy
SIP Access Proxy
SIP Registry &
Presence Server
Firewall / NAT
SIP Registry &
Presence Server
Corp SIP Network
Home Network
Corp SIP Network
SIP TA
SIP SoftPhone
Enterprise
ITU-T
SIP Hard Phone
SIP SoftPhone
Enterprise
SIP Hard Phone
SIP SoftPhone
Black phone
ITU-T / ATIS Workshop “Next Generation Technology and
Standardization“
Las Vegas, 19-20 March 2006
5
Consumer
SIP Hard Phone
NGN Architecture
S/I-CSCF S/BC AS MS PSTN GW
ISUP
PRI
PSTN
Ethernet
AR
Optical Access Tech. AR
Wireless Access Tech.
Carrier
IMS/NGN
Core
le A
Cab
h.
Tec
s
s
cce
AR
AR
DSL Access Tech.
AR
AR
AR
Managed
Router
Corp
LAN
SIP TA
SIP Phone Black phone
ITU-T
Managed
Router
IP Backbone
Corp
LAN
Enterprise
Networks
ITU-T / ATIS Workshop “Next Generation Technology and
Standardization“
Las Vegas, 19-20 March 2006
SIP TA
SIP Phone Black phone
6
NGN Architecture Overview
3rd Party Applications
ANI
Management Functions
Application/Service Functions
Service User
Profiles
Service Control
Functions
Service stratum
Ttransport User
Profiles
Network
Attachment
Control Functions
Resource and
Admission
Control Functions
Transport Control Functions
End-User
Functions
Other
Networks
Transport Functions
UNI
NNI
Transport stratum
Control
Media
Management
ITU-T
ITU-T / ATIS Workshop “Next Generation Technology and
Standardization“
Las Vegas, 19-20 March 2006
7
NGN ISSUES TO BE ADDRESSED
o Network-to-Network Interconnection and
Interworking
o Application Server Interface Functionality
o Service Continuity
• Across different access modes
• Between different operators
o Wireless-Wireline Integration
• Common Services (“Portable”)
• Continuity across different access networks
ITU-T
ITU-T / ATIS Workshop “Next Generation Technology and
Standardization“
Las Vegas, 19-20 March 2006
8
FUTURE NGN WORK – “LET’S MOVE FORWARD!”
o End-to-End Service View
o Interoperability – a KEY Issue
o Business Driven – Services to Customers
o Implementable Standards and Solutions
o Network-to-Network Interworking
o Application Server Interface Functionality
o Service Continuity
o Wireless-Wireline Integration
oCommon Services (“Portable”)
oContinuity across different access networks
ITU-T
ITU-T / ATIS Workshop “Next Generation Technology and
Standardization“
Las Vegas, 19-20 March 2006
9
NGN Architecture
Thank You
ITU-T
ITU-T / ATIS Workshop “Next Generation Technology and
Standardization“
Las Vegas, 19-20 March 2006
10