📑 Specifications and relevant references

This is a list of specifications in the scope of 5G Multicast Broadcast Services.

MBS User Services

  • 3GPP TS 26.502 - 5G Multicast-Broadcast Services; User service architecture
  • 3GPP TS 26.517 - 5G Multicast-Broadcast User Services; Protocols and Formats
  • 3GPP TS 29.580 - 5G System; Multicast/Broadcast Service Function services; Stage 3
  • 3GPP TS 29.581 - 5G System; Multicast/Broadcast Service Transport Services; Stage 3

5G Core Network specifications

MBS architecture

  • 3GPP TS 23.247 - Architectural enhancements for 5G multicast-broadcast services

Network Function services

  • 3GPP TS 29.532 - 5G System; 5G Multicast-Broadcast Session Management Services; Stage 3
  • 3GPP TS 29.537 - 5G System; Multicast/Broadcast Policy Control services; Stage 3

    Protocols

  • 3GPP TS 29.244 - Interface between the Control Plane and the User Plane nodes
  • 3GPP TS 38.413 - NG-RAN; NG Application Protocol (NGAP)
  • 3GPP TS 24.501 - Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3
  • 3GPP TS 29.281 - General Packet Radio System (GPRS) Tunnelling Protocol User Plane (GTPv1-U)

Control plane

  • PFCP (29.244)
  • NGAP (38.413)
  • NAS (24.501)

User plane

  • GTPU (29.281)

NR and NG-RAN specifications

NR

Control plane (PSS/SSS/PBCH(MIB), PDCCH, PDSCH(SIB20/SIB21/MCCH)):

  • RRC (38.331)
  • PDCP (38.323)
  • RLC (38.322)
  • MAC (38.321)
  • PHY (38.211, 38.212, 38.213, 38.214)

User plane (PDSCH (MTCH)):

  • SDAP (37.324)
  • PDCP (38.323)
  • RLC (38.322)
  • MAC (38.321)
  • PHY (38.211, 38.212, 38.213, 38.214)

NG-RAN

Interfaces

  • Xn (38.420,38.423): Connect two gNBs
  • NG (38.410,38.413): NG-c = N2 (AMF); NG-u = N3 (UPF)
  • F1 (38.470,38.473): F1-c (PDCP-c to RLC); F1-u (PDCP-u to RLC)
  • E1 (38.460,38.463): CU-CP (RRC + PDCP-c) to CU-UP (SDAP + PDCP-u)