ITU-T SG11
Brain Storming on NGN:
Future Directions
for Control protocols
Alain Le Roux
Geneva, 14 November 2002
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Potential new areas of activities
• WP1 (services and application requirements &
control protocols)
– Multi-media related Network control requirements
– NGN control architecture (functional decomposition)
– NGN interfaces & control protocols (APIs, SIP …)
• WP2 (call/session and resource control requirements)
– Resource and QoS control functions
• WP3 (signalling/control protocols)
– Protocol selection and profile for call/session/bearer (SIP, MPLS,
RSVP, COPS …)
– Call/bearer control protocol interactions & interworking
• WP4 (transport of control protocols)
– Signalling transport architecture and protocol profiles (e.g. based
on SIGTRAN RFCs)
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illustration of Scope of Control
Architecture & Protocols in SG11
Service & Application
Control (Servers)
User authentication &
Service profile control
Scope ITU-T SG11
2
1
Session (or call)
control (Call Agents)
Resource control &
Traffic policing
2
E.g. BICC, H323, SIP, SIP-T/SIP-GTD
3
3
e.g. H248
4
Bearer
control (Switch/Routing)
E.g. ATM sig, MPLS/RSVP ...
5 (UNI)
Transport
(xDSL/GbE/SDH/
DWDM/Optical)
Per Session Control Protocols:
• Session (call): 1
• Service/Application: 2
• Resources allocation &
traffic policy control: 2, 3
6 (NNI)
Transport resource control:
5 (UNI) • Bearer/Connection control: 4
• Backbone resource control: 5, 6
E.g. GMPLS with RSVP-TE
or CR-LDP, or Optical-PNNI
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Next steps ...
• Confirmation of SG11 as the UIT-T study group
lead on Network Control Architectures & Protocols
– legacy and emerging ones for NGN architectures
• Initiation of a SG11 ‘N2CAP’ project
– Part of the NGN 2004 SG13 coordinated Project
• Organise its preparation & launch
– e-mail activity (moderated by the Project coordinator)
• Impacts on the SG11 Questions and Structure
– SG11 Questions update
– SG11 structure adjustments possibly needed
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