A1.2 Introduction

24.1093GPPBootstrapping interface (Ub) and network application function interface (Ua)Protocol detailsRelease 17TS

A1.2.1 General

The GBA Push procedure is executed in order to establish a bootstrapped security association, i.e. bootstrapping session between a Push-NAF and a UE.

A1.2.2 Key required to interpret signalling flows

The detailed message contents are not shown in the flows for this clause as they are not necessarily transported using a text based mechanism. The details for the message contents can be found in 3GPP TS 33.223 [24].

The flows show the signalling exchanges between the following functional entities:

– User Equipment (UE);

– Push-Network Application Function (P-NAF);

– Bootstrapping Server Function (BSF);

– Home Subscriber Server (HSS).