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SA2 - Architecture

Within the 3GPP Technical Specification Group Service and System Aspects (TSG SA), the main objective of 3GPP TSG SA WG2 (SA2) is to develop the overall 3GPP system architecture and services including User Equipment, Access Network, Core Network, and IP Multimedia Subsystem. The Radio Access Network architecture is under TSG RAN’s responsibility.

SA2 has a system-wide view and defines the main entities of the system architecture, and how these entities are linked to each other. SA2 also defines the main functionality and the information exchange between these entities.

SA2 is currently responsible for the 5G System and Evolved Packet System (EPS) Architectures including the 3GPP enhancements for multimedia services (including emergency services), IoT, and other market sectors/vertical industries related use-cases.

SA2 coordinates with other 3GPP WGs and all relevant Standards Developing Organizations (SDOs), industry fora, and Market Representation Partners (MRPs) for its specification work.

Terms of reference

The latest terms of reference were approved at SA#91-e in document SP-210266.

Useful links and information

About SA WG2 List of elected officials
Documents Meeting documents
  Work items
Meetings Next meeting information & previous meeting reports and documents
  Liaisons Statements
  Full SA WG2 meeting calendar
General info Email exploder lists
  Contact SA WG2


SA Working groups and Ad Hoc groups 
TSG SA Plenary  
TSG SA WG1 Services
TSG SA WG2 System Architecture and Services
TSG SA WG3 Security and Privacy
TSG SA WG4 Multimedia Codecs, Systems and Services
TSG SA WG5 Management, Orchestration and Charging
TSG SA WG6 Application Enablement and Critical Communication Applications
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