Page 425 - 5G Basics - Core Network Aspects

Core network aspects 1

1 Scope and purpose
This Recommendation is intended to be used as the general requirements document leading to the
development of recommendations and implementation guidelines for the realization of fixed-mobile
convergence (FMC). This is to ensure that all elements required for interoperability and the associated
network capabilities to support applications globally across an FMC environment are adequately addressed
by ITU-T standardization activities.

The scope of this Recommendation is to provide FMC principles, high-level service requirements and
capabilities. More specifically, this Recommendation identifies the fundamental characteristics,
requirements and capabilities that FMC supports.

As next generation networks (as described in [ITU-T Y.2011]) evolve, they will increasingly support the general
FMC requirements and capabilities defined in this Recommendation. NGN specific FMC requirements will be
captured in releasing specific NGN requirements Recommendations.

2 References
The following ITU-T Recommendations and other references contain provisions which, through reference in
this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated
were valid. All Recommendations and other references are subject to revision; users of this Recommendation
are therefore encouraged to investigate the possibility of applying the most recent edition of the
Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is
regularly published. The reference to a document within this Recommendation does not give it, as a stand-
alone document, the status of a Recommendation.

[ITU-T Q.1741] ITU-T Recommendation Q.1741-series:
– Q.1741.1 (2002), IMT-2000 references to release 1999 of GSM evolved UMTS core
network with UTRAN access network.
– Q.1741.2 (2002), IMT-2000 references to release 4 of GSM evolved UMTS core
network with UTRAN access network.
– Q.1741.3 (2003), IMT-2000 references to release 5 of GSM evolved UMTS core
network.
– Q.1741.4 (2005), IMT-2000 references to release 6 of GSM evolved UMTS core
network.
[ITU-T Q.1742] ITU-T Recommendation Q.1742-series:

– Q.1742.1 (2002), IMT-2000 references to ANSI-41 evolved core network with
cdma2000 access network.
– Q.1742.2 (2003), IMT-2000 references (approved as of 11 July 2002) to ANSI-41
evolved core network with cdma2000 access network.
– Q.1742.3 (2004), IMT-2000 references (approved as of 30 June 2003) to ANSI-41
evolved core network with cdma2000 access network.
– Q.1742.4 (2005), IMT-2000 references (approved as of 30 June 2004) to ANSI-41
evolved core network with cdma2000 access network.
– Q.1742.5 (2006), IMT-2000 references (approved as of 31 December 2005) to
ANSI-41 evolved core network with cdma2000 access network.

– Q.1742.6 (2007), IMT-2000 references (approved as of 31 December 2006) to
ANSI-41 evolved core network with cdma2000 access network.

[ITU-T Q.1761] ITU-T Recommendation Q.1761 (2004), Principles and requirements for convergence
of fixed and existing IMT-2000 systems.

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