4 Overview

29.5803GPP5G SystemMulticast/Broadcast Service Function servicesRelease 17Stage 3TS

In the frame of Multicast/Broadcast Services (MBS), the Multicast/Broadcast Service Function (MBSF) provides services to NF service consumers (e.g. AF, NEF) via the Nmbsf service based interface. The MBSF supports for this purpose the functionalities defined in 3GPP TS 26.502 [15] and 3GPP TS 23.247 [14], i.e. service level functionalities to support MBS and the control of the MBSTF, when used.

Figures°4-1 and 4.2 depict the Multicast/Broadcast related reference architecture of the MBSF respectively in SBI representation and reference point representation.

Figure 4-1: Reference model for the MBSF Services – SBI representation

Figure 4-2: Reference Model for the MBSF Services – Reference point representation