A key aspect of 3GPP Specifications is that they specify a system, consisting of access network and core network, together with user equipment and services applicable across the system. This approach ensures that systems based on 3GPP specifications are capable of rapid and modular development, and that such systems facilitate deployment of competitive service offerings whilst enabling global roaming. In some cases, 3GPP endeavors to develop technologies applicable not only within a 3GPP system but also in non-3GPP systems. This approach facilitates interoperability and convergence of systems and services.
3GPP TSG SA WG1 reports to 3GPP TSG SA.
3GPP TSG SA WG1 may be abbreviated by the terms "TSG SA WG1" or "SA WG1" or "SA1"or "S1".
Specification of features (stage1) .
Specification of services (stage 1).
Specification of service capabilities (stage 1).
Identification of requirements to support service operation.
Identification of requirements for service interworking.
Identification of requirements for service interoperability between networks.
Charging and accounting requirements.
Service and feature requirements applicable to mobile and fixed s communications technology for:
· 2G, 3G and future communication technologies independent of access technologies based on an evolved GSM/GPRS core network , including the Evolved 3GPP Core Network,
· 2G, 3G and future communication access technologies (including GERAN, UTRAN and E-UTRAN),
· an evolved industry-wide IP Multimedia Subsystem (IMS) developed in an access independent manner.
The outputs of this working group will be Technical Specifications and Reports, or changes to these, which are all submitted to TSG SA for approval. Once approved, they shall form the basis for the work for the whole of 3GPP and for industry segments interested in deploying networks based on IMS.