Next Generation Network Requirements
Bob Hall
T1S1 Chairman
SBC Communications
+1-512-372-5842
bhall@tri.sbc.com
ITU-T Workshop on “Next Generation Networks: What, When and How?”
Geneva, July 9-10, 2003
Committee T1 Requirements
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•
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Interworking with PSTN and 3G Wireless
Transition from Circuit Switched
Reliability and QoS Control
Security for Users and Networks
Standard Network Interfaces
OAM&P
July 9-10, 2003
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
2
Protocol Requirements
SRC
UNI
TE
DST
IP Network Cloud
NNI
GW
GW
GW
GW
UNI
NNI
. . . GW
GW
LAN
TE
LAN
Network
Customer Installation
Network
Network
End-End Network (IP Service QoS)
Customer Installation
User-to-User Connection (Transport and higher QoS)
TE Terminal Equipment
GW
Gateway
Router
Protocol Stack
*NI
Network Interface
Source: TD 43 (WP 2/11) Geneva, 11-22 November 2002
July 9-10, 2003
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
3
Architecture of IP Signalling
User
Application Request
& QoS
Requirements Result
Terminal Equip
UNI
Application Request
Requirements
Cnfg.Choices
Network
QoS Classes
& Decisions
ACK/REJ/Mod
Network(s)
Request
ACK/REJ/Mod
Design/Eng.
Feedback
Provisioning
QoS Mech.
Monitoring
Reports
(SLAs)
Perceived
QoS
NNI
Source: TD 43 (WP 2/11) Geneva, 11-22 November 2002
July 9-10, 2003
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
4
Probable Overlay
IP
IPNetwork
NetworkOverlay
Overlay
Circuit
CircuitSwitched
SwitchedNetwork
Network
July 9-10, 2003
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
5
Everything is on the Edge
Servers, Authentication, Features, etc.
IP
IP
IP
IP
Edge
Edge
Edge to Edge
Edge to Edge
IP
IPNetwork
NetworkororInternet
Internet
Edge to Edge
Edge
IP
IP
?
July 9-10, 2003
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
6
View of Interfaces
NNI
Access
Packet Transport
Fabric
NNI
Core Networks
Packet Transport
Fabric
NNI
Core Networks
Packet Transport
Fabric
NNI
Access
Packet Transport
Fabric
NNI
The
Internet
July 9-10, 2003
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
7
Work is Required
NNI
PSTN
Interface
Addressed
By Current Work
July 9-10, 2003
NNI
NGN Core
Network
Require
Interface
Standards
NGN Core
Network
Require
Standards
Work
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
8
Generic Architecture Confusion
?
AIN
Parlay ?
Feature/Application
Feature/Application
Feature/Application
Server
Server
Server
Service
Applications
800, LIDB
Portability
API
?
SS7
?
SCP
SS7
B
I
C
C
SS7
STP
ENUM
?
?
SIGTRAN?
Integrated
Service
Node
Circuit transport
Fabric
SIP Server
SIP Server
SIP Server
?
H.248?
?
Media
Gateway
Other Media
Gateway
Controllers
SIP
Media
Gateway
Controller
STP
July 9-10, 2003
Signaling
Gateway
SIP
Packet transport
Fabric
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
9
Possible Generic Architecture View
Service
Applications
PSTN Network
ENUM
Parlay?
800, LIDB
Portability
Feature
Server
AIN
?
Signaling
Gateway
DNS
SIP
Server
SIP
Server
SIP
SIP
STP
SS7
NGN
Network B
NGN
Network A
B
I
C
C
SS7
SCP
?
Gateway
SIGTRAN
NNI
STP
Media
Gateway
Controller
Integrated
Service
Node
Circuit transport
Fabric
Media
Gateway
Controller
BICC/SIP
H.248
H.248
Media
Gateway
TDM
Packet
Transport
Fabric
Packet
Transport
Fabric
Media
Gateway
NNI
July 9-10, 2003
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
10
Thank You
For Your Attention.
Questions?
July 9-10, 2003
ITU-T Workshop on "Next Generation Networks: What, When and How ?"
11