3GPP System Architecture Evolution (SAE); CT WG1 aspects
The present document discusses and describes the CT1 aspects of the 3GPP System Architecture Evolution (SAE) towards a higher-data-rate, lower-latency, packet-optimized system that supports multiple access technologies.
In particular, these CT1 aspects include the Non-Access-Stratum (NAS) functions to be performed by the User Equipment (UE) in idle mode, the NAS signalling procedures between the UE and the evolved packet core network (EPC) via the E-UTRAN, and the layer 3 signalling procedures between the UE and the EPC via non-3GPP access networks.
The present document also considers the requirements on the NAS between the UE and the core network which arise from specific services like MBMS and network functions like security, QoS, and mobility within the E‑UTRAN or between the E‑UTRAN and other 3GPP or non-3GPP access networks.
The present document is intended as a holding place for CT1 SAE material until it stabilises sufficiently to be moved to appropriate 3GPP technical specifications.