>> Study Group 11 : Signalling requirements and protocols
Question 3/11 – Session control and signalling requirements and protocols
(Continuation of parts of Questions 9/11, 11/11 and 12/11 and whole Questions 6/11 and 16/11 of 2001-2004)
- Motivation
The operation of conversational and non-conversational session-based communications in NGN architecture will use session signalling control protocols to support a wide range of multimedia services. In the case of conversational services, SIP (Session Initiation Protocol) will most likely be a candidate for which relevant profiles shall be specified in order to support the service capabilities and requirements in the NGN environment. Convergence with the 3GPP IP Multimedia Core Network Subsystem SIP profile should be sought, taking into consideration relevant adaptations required to accommodate the requirements of fixed IP connectivity access networks and any other identified NGN requirements.
Recommendations in force: Q.761-Q.765, Q.767, Q.931-Q.932, Q.1950, Q.1901, Q.1902, Q.1912 and Q.1922
- Question
Study items to be considered include, but are not limited to:
- What new Recommendations are required to specify session control and signalling requirements and protocols for the Next Generation Networks (NGN)?
- What enhancements should be made to the existing signalling Recommendations to facilitate evolution of current networks to NGN?
- What associated mechanisms are required to assure security of session signalling and control?
- What functional architecture and entities are required to support services and/or applications of public interest such as emergency call handling, lawful interception, number portability, etc.?
- Tasks
Tasks include, but are not limited to:
- Development of control and signalling requirements and protocols to support session based multimedia services for both UNI and NNI;
- Enhancements to existing signalling protocols such ISUP on an as needed basis;
- Development of specifications for interworking between new and existing session control and signalling protocols; and
- Joint development of specifications of interfaces to adjacent layers (application, resource control) with relevant Questions groups.
- Relationships
Recommendations: Q.1900, Q.2700, Q.2900, Q.600, Q.700 and Q.900-series
Questions: Qs 1, 2, 4, 5 & 7/11; Qs 3/13, 1/16 and 2/16
Study Groups:
ITU-T Study Group(s) responsible for NGN architecture
ITU-T Study Group(s) responsible for multimedia services & applications
ITU-T Study Group(s) responsible for security aspects
ITU-T Study Group(s) responsible for mobility aspects
Standardisation bodies, fora and consortia:
Organizations such as: 3GPP (via ETSI) and 3GPP2 (via TIA)
IETF (SIP and SIPPING WGs)
1 The word “service” in this context is not meant necessarily to represent an ITU-T-defined Service.
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