Service and network capability requirements and network architecture
The increase of mobile communications continues at an explosive rate, and globally
the number of mobile subscribers has surpassed those of traditional fixed communication
services in some markets by a considerable margin. The increasing desire for accessing
mobile services such as those available from Internet on the move and mobile multimedia
will require vast range of terminal devices and advanced network environment.
The emergence of multi-operator environments in a number of countries and the increasing
liberalization of networks and infrastructure has stimulated an open competitive environment.
Such an environment underlines the need for customers to generally expect the same service
presentation irrespective of the access and core networks used to deliver such services.
In addition, users have indicated the desire for multimedia services, high quality, and consistent
service availability, service interoperability, etc. regardless of the types of networks/interfaces
or the location of the user. How to expand network capabilities to support the above service
expectations is an important topic for network design.
In order to continue technical work, e.g., protocol design, etc, clear vision for future mobile services
and network capability requirements is required to ensure that the direction is correct.
This Question shall be responsible for the Q.170x series of recommendations.
Study items to be considered include, but are not limited to
What Services and Network capability requirements, and the long-term architecture
are needed to support services and applications beyond IMT-2000?
What network capabilities are required to ensure the support of public interest
services such as emergency call handling and lawful interception?
The major focus of this question is to develop, in close cooperation with
relevant organizations within and outside ITU, service and network capability
requirements for beyond IMT-2000 systems. The task objectives for the question
include, but are not limited to:
Develop “IMT-2000 and Beyond” aspects of service and network capability requirements
framework, for realizing the vision of beyond IMT-2000 systems.
Develop the long-term high-level network architecture for beyond IMT-2000 systems.
Develop definition of functional entities (FEs) and allocation of functional
capabilities to FEs,
Develop interfaces model among FEs and a network architecture model of beyond
Assist the relevant protocol groups to identify the protocol changes needed to
support the network architecture for beyond IMT 2000 systems.
An up-to-date status of work under this Question is contained in the SG 19 Work
The execution of tasks of this question will require close co-ordination and collaboration with:
Recommendations: NGN Mobility
Questions: NGN; Q.2/19; Q.4/19
SG on operational aspects of service provision, networks and performance;
ITU-R Working Party 8D & 8F
SG on signaling requirements and protocols;
SG on end-to-end transmission performance of networks and terminals;
SG on multi-protocol and IP-based networks and their internetworking
SG on NGN
SG on multimedia services, systems and terminals
Relevant ITU-D SGs
Other relevant organisations including SDOs, IETF, 3G Partnership Projects, pre-standards research forums, etc.