4 Overview

29.5593GPP5G ProSe Key Management Services5G SystemRelease 17Stage 3TS

The 5G ProSe Key Management Function (5G PKMF) is the logical function handling network related actions required for the key management and the security material for discovery of a 5G ProSe UE-to-Network Relay by a 5G ProSe Remote UE; and for establishing a secure PC5 communication link between a 5G ProSe Remote UE and 5G ProSe UE-to-Network Relay (see 3GPP TS 33.503 [4]).

Figure 4-1 provides the reference model (in service based interface representation and in reference point representation), with focus on the 5G PKMF:

Figure 4-1: Reference model – 5G PKMF

The functionalities supported by the 5G PKMF are listed in clause 4.2.1.2 of 3GPP TS 33.503 [4].

NOTE: Only service based interfaces between 5G PKMFs will be covered in this TS, other interfaces won’t be covered for the time being.