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Reasons for the Study
The rapidly growing wireless data traffic and importance of
IP-based networking are stimulating a revolution in the way fixed and mobile
networks are implemented. The mid to long-term aspects in which future fixed and
mobile networks will no longer be different from the near-term result in the
need to address wireless access to IP-based networks.
Seamless services provisioning over and across the
heterogeneous fixed (e.g., PSTN, ISDN, PSDN such as Internet, IP networks, CATV,
etc.) and evolving mobile networks is desirable in the converged communications
environment of the future. In the broader context of convergence, it can be
recognized that there are other systems besides IMT-2000 that exist today (e.g.,
broadcasting, WLAN, Satellite, etc). To involve the interconnection of fixed and
mobile networks, interfaces between IMT-2000 networks and other networks and
technologies to facilitate convergence should be studied within ITU-T. This
Question shall not address public/private network convergence.
It is also recognised that many countries have interest in exploiting
IMT-2000 technologies for fixed wireless access (FWA) applications (refer to
Q.77/8 for the use of mobile technologies for FWA and Q.215/8 for frequency
sharing and interface requirements). Therefore FWA is within the scope of Q.7/SSG.
It is recognised that the service functionalities in fixed and mobile
networks are increasingly converging and the collaboration from ITU-T on network
aspects is required.
To study network aspects and protocol requirements for Service Provisioning,
Mobility Management (covered in Q.2/SSG and input to this Question), Session
Control and Bearer Control for the convergence of fixed networks and existing
IMT-2000 systems would provide the foundation for migration paths to
interoperable and harmonized network architectures to provide services
transparently to users across different network access arrangements, subject to
regulatory agreements.
Questions
What are the principles and requirements for convergence of public fixed
networks and IMT-2000 networks?
How will existing and evolving public fixed networks be
evolved as converged core networks to support IMT-2000 capabilities?
What new requirements are needed to support the convergence
of puiblic fixed networks and existing IMT-2000 systems?
What are the architectural requirements for converged core networks
accessible from various wireless, satellite and wireline access technologies to
support current and evolving IMT-2000 capabilities?
How can the study on the convergence of public fixed networks
and existing IMT-2000 networks be best adapted to meet the need of developing
countries?
Task objectives
All task objectives should consider potential regulatory implications.
1) Establish co-operative working arrangement with external organizations
(e.g., SDOs, IETF, ETSI, ATM Forum, Partnership Projects) to ensure that
work under this question in ITU-T does not overlap with other external
organizations.
Expected completion: On-going
2) Identify and study principles and requirements for convergence of public
fixed networks and IMT-2000 networks, and document these in an appropriate
manner for consideration by the Partnership Projects and SDOs, and other
ITU-T SGs including SG 11, as part of their evolution plans.
Expected completion: 2Q2002.
3) Identify and study network architecture and interface issues which will
facilitate evolution of existing public fixed networks towards converged
core networks, supporting IMT-2000 capabilities, in close cooperation with
other relevant study groups and recognized standardization bodies, and
document these in an appropriate manner for consideration by the Partnership
Projects and SDOs, and other ITU-T SGs including SG11, as part of their
evolution plans.
Expected completion: 1Q2003.
4) Identify and study access network interface issues for utilizing IMT-2000
radio access technologies as FWA with existing public fixed networks, and
document these in an appropriate manner for consideration by the Partnership
Projects and SDOs, and other ITU-T SGs including SG11, as part of their
evolution plans.
Expected completion: 4Q2003.
5) Identify and study architectural and network interface issues, including
Service Provisioning, Session Control and Bearer Control, relating to
converged core networks consistent with the long term network architecture
as delivered by Q.1/SSG to ensure capture of the convergence requirements,
and document these in an appropriate manner for consideration by the
Partnership Projects and SDOs, and other ITU-T SGs including SG11, as part
of their evolution plans.
Expected completion: 4Q2004
6) Identify and study possible migration paths for public fixed and mobile
network convergence, and document these in an appropriate manner for
consideration by the Partnership Projects and SDOs, and other ITU-T SGs
including SG11, as part of their evolution plans.
Expected completion: 4Q2004.
Relationships
- ITU-R WP8 D & F on IMT-2000 and
Beyond radio aspects, ITU-R 8A & B. Related Questions: 77/8, 215/8
- ITU-R JTG1-6-8-9
- ITU-T SGs 4, 9, 11, 13, and 16 (Multimedia)
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