3GPP System Architecture Evolution (SAE): CT WG4 aspects
The present document discusses and describes procedures and protocols from CT4 aspects of Evolved Packet System (EPS) towards a higher-data-rate, lower-latency, packet-optimized system that supports multiple access technologies.
These CT4 aspects include selection and study of protocols and procedures that will be used in the evolved system (e.g. within evolved packet core network, between EPC and current GPRS core network, between EPC and HSS/AAA, and between 3GPP and non-3GPP access), and describes impacts and required enhancements for related network protocols, including GTP and IETF protocols based on stage2 architecture requirements.
In addition, the present document also includes description of the new identities and addressing schemes required by Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and Evolved Packet System (EPS), and in particular functional requirements and protocols for enhancing existing capabilities for EPS/E-UTRAN, e.g. MBMS and network sharing.
The present document is used as a place holder for CT4 EPS materials to be moved to appropriate 3GPP technical specifications when the TR is sufficiently stable.