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Reasons for the question
The increase of mobile communications has been explosive, and
the number of mobile subscribers has surpassed those of
traditional communication services in some areas. The increasing
desire for accessing services such as those available from
Internet on the move has created new fields of services such as
"mobile multimedia," etc.
3rd generation mobile systems – IMT-2000 –
will be introduced in early of 2000s in the market to realize
high speed, high capacity, and global mobility services.
The emergence of multi-operator environments in a number of
countries and the increasing liberalization of networks and
infrastructure will stimulate 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.
The Virtual Home Environment (VHE) is an environment, which
presents the user with a common look and feel interface and
service experience regardless of location, terminal type and
network. It applies to both mobile and fixed networks, for both
circuit switched and packet switched services.
However, users have indicated the desire for
faster multimedia services, higher QoS, and consistent service
availability, service interoperability, etc. regardless of the
types of networks 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.
The question
What Services and Network capability requirements, and the
long-term architecture are needed to support services and
applications beyond IMT-2000?
Task objectives
The major focus of this question is to
develop, in close cooperation with relevant organizations within
and without ITU, service and network capability requirements for
beyond IMT-2000 systems. The task objectives for the question
are:
1) Prepare a document summarising the findings of a gap
analysis on the current status and trends in customer user
needs, technology, market, and standardisation requirements,
if any.
First deliverable expected: a technical report ready for
approval - 2Q 2002.
2) Develop "IMT-2000 and Beyond" aspects of
service capability requirements, including VHE, for
realising applications in item 1) above.
First deliverable expected: a draft new Recommendation
ready for AAP Consent - 4Q 2002.
3) Develop network capabilities requirements for realizing
item 2) service requirements. First deliverable expected: a
draft new Recommendation ready for AAP Consent -TBD.
4) Develop the long-term high-level network architecture
for beyond IMT 2000 systems.
a) Develop definition of functional entities (FEs) and
allocation of functional capabilities to FEs,
b) Develop interfaces model among FEs and a network
architecture model of beyond IMT-2000,
First deliverable expected: a draft new Recommendation
ready for AAP Consent – TBD.
5) Assist the relevant protocol groups to identify the
protocol changes needed to support VHE in a mobile network,
which will facilitate services transparency to users across
different access networks.
Expected completion: Task completion dates are in accordance
with task objectives.
Relationships
The execution of tasks of this question will require close
co-ordination and collaboration with :
- ITU-T SG 2, 11, 12, 13, 16
- ITU-R Working Party 8D & 8F (especially WG-Vision)
- Relevant ITU-D SGs
- Other relevant organisations including SDOs, IETF, etc.
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