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Content for  TS 23.247  Word version:  18.4.0

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8 Control and user plane stacks  8.1 Control plane for Multicast and Broadcast services  8.1.1 General  8.1.2 NG-RAN - MB-SMF  8.2 User plane for Multicast and Broadcast services 
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8  Control and user plane stacks  p. 113

8.1  Control plane for Multicast and Broadcast services  p. 113

8.1.1  General  p. 113

The control plane protocol stacks for Multicast and Broadcast service between NG-RAN and MB-SMF is defined in the clause 8.1.1 and the other control plane protocol stacks for Multicast and Broadcast service are defined in clause 8.2 of TS 23.501.
The control plane protocols for N4mb reference point between MB-SMF and MB-UPF are defined in TS 29.244.
The reference point Nmb2 between MBSF and MBSTF will be defined in TS 26.502 and TS 26.517.
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8.1.2  NG-RAN - MB-SMF  p. 113

Reproduction of 3GPP TS 23.247, Fig. 8.1.1-1: Control Plane between the NG-RAN and the MB-SMF
Figure 8.1.1-1: Control Plane between the NG-RAN and the MB-SMF
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Legend:
  • N2 SM information: This is the subset of NG-AP information that the AMF transparently relays between the NG-RAN and the MB-SMF, and is included in the NG-AP messages and the N11mb related messages, where the NG-RAN node has MBS capability and in this Release the NG-RAN is a 3GPP NR.

8.2  User plane for Multicast and Broadcast services  p. 113

The User plane protocol stack for PDU session which handles the multicast operation is same with the PDU session user plane Protocol Stack defined in the clause 8.3.1 of TS 23.501.
The user plane protocol stack for MBS session in case of shared delivery is described in Figure 8.2-1 and Figure 8.2-2. In Figure 8.2-1, the UDP tunnel applies to N6mb and Nmb9, while in Figure 8.2-2, the plain IP multicast applies to N6mb. The user plane protocol stack for MBS session in case of individual delivery is described in Figure 8.2-3.
Reproduction of 3GPP TS 23.247, Fig. 8.2-1: User Plane Protocol Stack for MBS session (UDP Tunnel)
Figure 8.2-1: User Plane Protocol Stack for MBS session (UDP Tunnel)
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Reproduction of 3GPP TS 23.247, Fig. 8.2-2: User Plane Protocol Stack for MBS session (plain IP multicast)
Figure 8.2-2: User Plane Protocol Stack for MBS session (plain IP multicast)
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  • 5G-AN Protocol Layers: This set of protocols/layers depends on the AN:
    • in this Release, the 5G-AN is a 3GPP NR, these protocols/layers are defined in TS 38.401. The radio protocol between the UE and the 5G-AN node (gNodeB) is specified in TS 38.300.
Reproduction of 3GPP TS 23.247, Fig. 8.2-3: User Plane Protocol Stack for MBS session in case of Individual delivery
Figure 8.2-3: User Plane Protocol Stack for MBS session in case of Individual delivery
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  • 5G-AN Protocol Layers: This set of protocols/layers depends on the AN:
    • in this Release, the 5G-AN is a 3GPP NR, these protocols/layers are defined in TS 38.401. The radio protocol between the UE and the 5G-AN node (gNodeB) is specified in TS 38.300.
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