|Universal Mobile Telecommunications System (UMTS); LTE; Architecture enhancements for non-3GPP accesses
|ETSI TS 123 402
|ETSI 3RD GENERATION PARTNERSHIP PROJECT (3GPP)
This document specifies the stage 2 service description for providing IP connectivity using non-3GPP accesses to the Evolved 3GPP Packet Switched domain. In addition, for E-UTRAN and non-3GPP accesses, the specification describes the Evolved 3GPP PS Domain where the protocols between its Core Network elements are IETF-based. ITU-T Recommendation I.130  describes a three-stage method for characterisation of telecommunication services, and ITU-T Recommendation Q.65  defines stage 2 of the method. The specification covers both roaming and non-roaming scenarios and covers all aspects, including mobility between 3GPP and non 3GPP accesses, policy control and charging, and authentication, related to the usage of non-3GPP accesses. TS 23.401  covers architecture aspects common to the Evolved 3GPP Packet Switched domain. The procedures defined in the present document for WLAN access selection and PLMN selection replace the corresponding I-WLAN procedures specified in TS 23.234 .