Summary of actions (2001 - 2004 study
During its January 2002 meeting, SG13 decided
to undertake the preparation of a new ITU-T Project entitled
"NGN 2004 Project". At the November 2002 SG13 meeting, a
preliminary description of the Project was achieved and endorsed
by SG13 with the goal to launch the Project. It has been regularly updated since then (refer to the NGN
2004 Project description above)
The role of the NGN 2004 Project was to organize and to coordinate
ITU-T activities on Next Generation Networks. Its target is to
produce a first set of Recommendations on NGN by the end of the
study period, i.e. mid-2004.
The first two Recommendations Y.2001 “General overview of NGN” and Y.2011 “General principles and general reference model for next generation networks” have since been approved.
Scope of the NGN 2004 Project
The NGN 2004 Project was seen as a realization of the concepts adopted in the Global Information
Infrastructure (GII). As a result, activities in the frame of the
new Project were in line with existing GII Recommendations (Y
series). The intention of the NGN 2004 Project was to establish implementation guidelines and
standards for the realization of Next Generation Networks based on
The major task of the NGN 2004 Project was to describe all elements required for
interoperability and network capabilities to support applications
globally across Next Generation Networks.
During the ITU-T Workshop on IP-networking and
Mediacom 2004 held in Geneva in April 2001, a session was
dedicated to the transition towards Next Generation Networks.
Different views on NGNs were presented, however the final panel
discussion revealed that it was difficult to reach a common
understanding of what the NGN should be.
During the SG13 meeting in Caracas in May 2001, discussions took
place on NGN matters however the subject was deemed not mature
enough to initiate the preparation of an ITU-T Project on NGN.
At the SG13 meeting in January 2002, NGN issues were again
addressed. In particular, discussions in Q.12/13 (now Q.1/13) (which
Project coordination and management) focused on the relationship
between the Global Information Infrastructure (GII) and Next
Generation Networks. The common understanding has been that the
NGN has to be seen as the concrete realization of concepts defined
for the GII. In addition, a clear demand from the market for
short-term standards in the field of NGN has been identified,
which has led to the proposition of 2004 as the target date to
prepare the first Recommendations on NGN. A series of Recommendation,
including Y.GRM-NGN, General reference model for NGN, were under development
in early 2004 with an objective of completion by June 2004. From the Recommendations identified below, the two first texts were completed and approved as Y.2001 and Y.2011, respectively.
||General overview of NGN
||General principles and general reference model for Next Generation Networks
||Functional architecture model (ex-Functional requirements and architecture of the NGN)
||NGN service requirements
||Mobility management requirements and architecture for NGN
||Framework for manageable IP network
||Migration of networks (including TDM networks) to NGN
||Regulatory consideration of the NGN
||End-to-end QoS architecture for IP networks evolving into NGN
||A QoS architecture for Ethernet-based IP access network
||Next Generation Networks terminology: Terms and definitions
All the draft NGN-related Recommendations initiated by SG 13 were transferred to the Focus Group on NGN (FGNGN) in June 2004. See
As a consequence the NGN 2004 Project was frozen. Study Group 13 is now working on an NGN Project coordination and release planning which have taken further steps following the December 2004 and April-May 2005 SG 13 meetings. A
first version of the NGN release 1 description and an informative NGN
roadmap pointing to releases beyond release 1 have been developed. The work will be supported by an NGN project management tool acting as umbrella for all referenced documents from ITU and other SDOs.
This tool has been specified and agreed for development and implementation. It is expected to be operational by September 2005.
The NGN Project coordination and release planning is maintained by Q.1/13.