3GPP defined the Generic Authentication Architecture (GAA). The adoption of GAA by other standardization bodies
showed that some services can not make the assumption that the User Equipment (UE) has always the possibility to
connect to the Bootstrapping Server Function (BSF) or that the UE for different reasons has not performed a
bootstrapping procedure directly with the BSF. Hence, this specification introduces and specifies a GBA Push Function.
full Table of Contents for TS 33.223 Word version: 15.0.0