(Continuation of Question 5/11) Motivation
Separation between transport and services is one of the essential
characteristics of Next Generation Networks (NGN) and/or the ubiquitous network.
This requires new types of signalling and control interactions between these
layers to enable, e.g., session servers and application servers to control
transport resources and associated QoS, in real time. Another essential
characteristic of the NGN is its support of session, terminal and user mobility.
During the 2005-2008 Study Period, ITU-T SG11 has developed a series of
Resource Control Protocols. It is expected that further protocol development
will be required:
- to provide coordination of admission control.
- to provide resource control and traffic management in support of unicast/multicast
for IPTV service, home networking, and mobility, including seamless
handover.
- to provide QoS signalling and traffic management in support of overlay
networks.
- to create protocols that are explicitly Flow State Aware.
- to exploit new IETF developments such as pre-congestion notification (PCN)
in a RACF-controlled environment.
- to provide coordination between RACF and PCE-controlled transport
networks.
Recommendations in force for which the Question is responsible: Q.Sup51,
Q.3300, Q.3301.1, Q.3302.1, Q.3303.0, Q.3303.1, Q.3303.2, Q.3303.3, Q.3304.1,
and Q.3304.2.
Question
Study items to be considered include, but are not limited to:
- What signalling requirements and protocols are required for resource
control involving new types of transport protocols and transport networks
(e.g. flow state aware protocols, PCE controlled networks, overlay
networks)?
- What new Recommendations are required to support resource control for
new application areas such as unicast/multicast flows for IPTV service, home
networking, and mobility?
- What new Recommendations are required to support handover control for
mobility?
- What new Recommendations are required to support new approaches to
resource control such as the use of pre-congestion notification (PCN) and
coordination of admission control between different domains?
- What new Recommendations are required to support security of resource
control and signalling?
- What new functional architecture and protocol enhancements required to
support resource control for services and applications of public interest
such as emergency call handling?
- What new Recommendations are required to support signalling of Quality
of Service (QoS) information?
- What enhancements to existing Recommendations are required to provide
energy savings directly or indirectly in information and communication
technologies or in other industries? What enhancements to developing or new
Recommendations are required to provide such energy savings?
Tasks
An up-to-date status of work under this Question is contained in the SG 11 Work Program (http://www.itu.int/ITU-T/workprog/wp_search.aspx?isn_sp=1&isn_sg=86).
Tasks include, but are not limited to:
- Develop signalling requirements and protocols for admission control
coordination.
- Develop signalling and control requirements for Flow State Aware
protocols, and development of the protocols themselves.
- Develop signalling requirements and protocols for Resource Control and
traffic management supporting unicast/multicast flows for IPTV service.
- Develop signalling requirements and protocols for QoS signaling and
traffic management supporting overlay networks.
- Develop signalling requirements and protocols for Resource Control
supporting home networking.
- Develop signalling requirements and protocols to support handover for
seamless session mobility.
- Develop signalling requirements and protocols for Resource Control
taking advantage of the combination of pre-congestion notification (PCN) and
RACF (NOTE).
- Develop signalling requirements and protocols for interaction among
resource control domains.
- Develop signalling requirements and protocols for interaction between
RACF and PCE.
- Develop specifications of interfaces to adjacent layers jointly with
relevant Questions/ groups.
NOTE – The work on PCN and RACF shall as much as possible be based on the
work done on PCN in the IETF.
Relationships
Recommendations:
H.248, Q.1950, Y.1541, Y.1221, Y.2111.
Questions:
Questions responsible for:
- signalling and control architecture (1/11).
- application control and signalling (2/11).
- session control and signalling (3/11).
- bearer control and signalling (4/11).
- network attachment control and signalling (7/11).
- project coordination and release planning for NGN (1/13).
- principles and functional architecture for NGN (3/13).
- requirements and framework for QoS for NGN (4/13).
- transport network architectures (12/15).
- management and control of transport systems and equipment (14/15).
Study Groups:
ITU-T Study Group(s) responsible for:
- transport technologies.
- multimedia aspects.
- security aspects.
- NGN architecture.
- application technologies.
- ASON technologies.
Standardization bodies:
Organizations such as: 3GPP (via ETSI), 3GPP2 (via TIA), IETF and regional
SDOs dealing with NGN. |