ETSI TS 123 247 V18.8.0 (2025-04)

5G; Architectural enhancements for 5G multicast-broadcast services (3GPP TS 23.247 version 18.8.0 Release 18)

RTS/TSGS-0223247vi80

General Information

• Status: Not Published
• Technical Committee: 3GPP SA 2 - Architecture
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Completion Date: 03-Apr-2025

Standards Content (Sample)

TECHNICAL SPECIFICATION
5G;
Architectural enhancements
for 5G multicast-broadcast services
(3GPP TS 23.247 version 18.8.0 Release 18)

3GPP TS 23.247 version 18.8.0 Release 18 1 ETSI TS 123 247 V18.8.0 (2025-04)

Reference
RTS/TSGS-0223247vi80
Keywords
5G
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ETSI
3GPP TS 23.247 version 18.8.0 Release 18 2 ETSI TS 123 247 V18.8.0 (2025-04)
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ETSI
3GPP TS 23.247 version 18.8.0 Release 18 3 ETSI TS 123 247 V18.8.0 (2025-04)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 8
1 Scope . 10
2 References . 10
3 Definitions of terms and abbreviations. 11
3.1 Terms . 11
3.2 Abbreviations . 12
4 General Concept . 13
4.1 Overview of multicast and broadcast communication . 13
4.2 MB service provisioning . 15
4.2.1 Multicast data provisioning . 15
4.2.2 Broadcast data provisioning . 16
4.3 Multicast session state model . 17
5 Architecture model . 20
5.1 General architecture . 20
5.2 General architecture for interworking with EPS . 21
5.3 Service-based interfaces, Reference point and functional entities . 22
5.3.0 Service-based interfaces . 22
5.3.1 Reference point . 22
5.3.2 Functional entities . 23
5.3.2.1 PCF . 23
5.3.2.2 MB-SMF . 23
5.3.2.3 SMF. 24
5.3.2.4 MB-UPF . 24
5.3.2.5 UPF . 24
5.3.2.6 AMF . 25
5.3.2.7 NG-RAN . 25
5.3.2.8 UE . 25
5.3.2.9 AF . 25
5.3.2.10 NEF . 26
5.3.2.11 MBSF . 26
5.3.2.12 MBSTF . 26
5.3.2.13 UDM . 27
5.3.2.14 UDR . 27
5.3.2.15 NRF . 27
5.3.2.15.1 General . 27
5.3.2.15.2 Extensions to NF profile at NRF . 27
6 Functionalities and features . 27
6.1 Authorization to MBS service . 27
6.1.1 AF authorization to the service for multicast and broadcast . 27
6.1.2 UE authorization to the service for multicast . 27
6.2 Local MBS service and Location dependent MBS service . 28
6.2.1 General . 28
6.2.2 Local MBS service. 28
6.2.3 Location dependent MBS service . 29
6.2.4 Void . 29
6.2.5 Void . 30
6.3 Mobility support of MBS service . 30
6.3.1 Mobility of Multicast MBS session . 30
6.3.2 Mobility of Broadcast MBS session . 30
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6.4 Subscription to multicast services . 31
6.4.1 General . 31
6.4.2 MBS subscription data in UDM . 31
6.4.3 MBS information in UDR . 32
6.5 Identifiers . 32
6.5.1 MBS Session ID . 32
6.5.2 Temporary Mobile Group Identity . 32
6.5.3 Source Specific IP Multicast Address . 32
6.5.4 MBS Frequency Selection Area ID . 32
6.5.5 Associated Session ID . 33
6.6 QoS Handling for Multicast and Broadcast services . 33
6.7 User plane management . 34
6.8 Interworking with MBMS over E-UTRAN for public safety services . 36
6.9 MBS Session Context . 36
6.9.1 MBS Session Context . 36
6.10 Policy control for Multicast and Broadcast services . 38
6.10.1 General . 38
6.10.2 MBS Session policy control data in UDR . 39
6.11 Service Announcement . 39
6.12 Paging strategy handling . 40
6.13 MBS Security function . 41
6.14 MBS Service Information . 41
6.15 Group Message Delivery . 42
6.16 Support of MBS data reception for UEs using power saving functions . 42
6.17 Support of Multicast MBS session data reception in UE with RRC_INACTIVE state . 43
6.18 Resource sharing across broadcast MBS Sessions during network sharing . 44
6.19 Support of Broadcast MBS Session Intended for NR (e)RedCap UEs . 45
6.20 QoE Measurement Collection Support for MBS . 45
7 MBS procedures . 46
7.1 Common procedure for Multicast and Broadcast . 46
7.1.1 MBS Session Management . 46
7.1.1.1 General . 46
7.1.1.2 MBS Session Creation without PCC . 46
7.1.1.3 MBS Session Creation with PCC . 50
7.1.1.4 MBS Session Deletion without PCC . 54
7.1.1.5 MBS Session Deletion with PCC . 55
7.1.1.6 MBS Session Update without PCC . 57
7.1.1.7 MBS Session Update with PCC . 58
7.1.2 MB-SMF discovery and selection for multicast/broadcast session. 60
7.1.3 MB-UPF discovery and selection for multicast/broadcast session . 61
7.2 MBS procedures for multicast Session . 61
7.2.1 MBS join and Session establishment procedure . 61
7.2.1.1 General . 61
7.2.1.2 Establishment of a PDU Session that can be associated with multicast session(s) . 62
7.2.1.3 Multicast session join and session establishment procedure . 62
7.2.1.4 Establishment of shared delivery toward RAN node . 67
7.2.2 Multicast MBS Session leave and Multicast MBS Session release procedure . 68
7.2.2.1 General . 68
7.2.2.2 Multicast Session leave requested by the UE . 68
7.2.2.3 Multicast session leave requested by the network or MBS session release . 70
7.2.2.4 Release of shared delivery toward RAN node . 72
7.2.3 Mobility Procedures for MBS . 73
7.2.3.1 General . 73
7.2.3.2 Xn based handover from MBS supporting NG-RAN node . 73
7.2.3.3 N2 based handover from MBS supporting NG-RAN node . 75
7.2.3.4 Xn/N2 based handover from non-MBS supporting NG-RAN node . 76
7.2.3.5 Minimization of data loss . 77
7.2.3.6 Xn/N2 based handover for inactive MBS session . 77
7.2.3.7 Connection Resume in RRC_INACTIVE procedure . 78
7.2.3.8 Mobility procedures to enable delivery of multicast MBS session data to UEs in
RRC_INACTIVE state . 78
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7.2.3.8.1 General . 78
7.2.3.8.2 Mobility of UE in RRC_INACTIVE state receiving MBS data within RNA . 79
7.2.3.8.3 Mobility of UE in RRC_INACTIVE state receiving MBS data out of RNA and within RA . 79
7.2.3.8.4 Mobility of UE in RRC_INACTIVE state receiving MBS data out of RA . 79
7.2.4 Support of Local multicast service and Location dependent multicast service . 79
7.2.4.1 General . 79
7.2.4.2 Support of location dependent multicast service . 79
7.2.4.2.0 Creation for location dependent MBS session . 79
7.2.4.2.1 UE join location dependent Multicast MBS session and establishment procedure . 80
7.2.4.2.2 Void . 81
7.2.4.2.3 Handover procedure . 81
7.2.4.2.4 Activation of location dependent MBS session . 83
7.2.4.2.5 UE location change handling within the same NG-RAN node between cells belonging to
different MBS service areas during Individual delivery . 83
7.2.4.2.6 UE location change handling by SMF . 84
7.2.4.2.7 UE mobility within the same NG-RAN between cells belonging to different MBS service
areas for shared delivery . 84
7.2.4.2.8 Void . 85
7.2.4.2.9 Connection Resume procedure . 85
7.2.4.3 Support of local MBS for multicast . 85
7.2.4.3.1 Local MBS service area information provided by AF . 85
7.2.4.3.2 Multicast session join and session establishment procedure for local MBS . 85
7.2.4.3.3 Handover procedure with local MBS session . 86
7.2.4.3.4 Activation of local MBS session . 87
7.2.4.3.5 UE location change handling by SMF . 87
7.2.4.3.6 UE mobility within the same NG-RAN between cells in or out of the MBS service area . 88
7.2.4.3.7 Void . 88
7.2.4.3.8 Connection Resume procedure with local MBS session . 88
7.2.5 MBS session activation and deactivation. 88
7.2.5.1 General . 88
7.2.5.2 MBS session activation procedure . 89
7.2.5.3 MBS session deactivation procedure . 92
7.2.6 Multicast session update procedure . 93
7.2.7 Void . 96
7.2.8 Service request procedure . 96
7.2.9 AF provisioning multicast MBS Session Authorization information . 96
7.2.9a AF provisioning MBS Session assistance information . 97
7.2.10 Multicast MBS procedures for UEs using power saving functions . 97
7.3 MBS procedures for broadcast Session . 98
7.3.1 MBS Session Start for Broadcast . 98
7.3.1a MBS Session Start for resource sharing across multiple broadcast MBS Sessions during network
sharing . 101
7.3.2 MBS Session Release for Broadcast . 101
7.3.2a MBS Session Release for resource sharing across multiple broadcast MBS Sessions during network

sharing . 102
7.3.3 MBS Session Update for Broadcast . 103
7.3.4 Support for Location dependent Broadcast Service . 105
7.3.5 MBS Session Delivery Status Indication for Broadcast. 105
7.3.6 Broadcast MBS Session Release Require . 106
7.3.7 Transport change for resource sharing across broadcast MBS Sessions during network sharing . 107
7.3.8 Broadcast MBS procedures for UEs using power saving functions . 108
7.4 MBS procedures for inter System Mobility. 109
7.4.1 Inter-system mobility with interworking at service layer . 109
7.5 MBS procedures for Group Message Delivery . 110
7.5.1 Group Message Delivery via MBS Broadcast . 110
7.5.2 Modification of previously submitted Group message . 112
7.5.3 Cancellation of previously submitted Group message . 113
8 Control and user plane stacks . 114
8.1 Control plane for Multicast and Broadcast services . 114
8.1.1 General . 114
8.1.2 NG-RAN – MB-SMF . 114
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8.2 User plane for Multicast and Broadcast services . 114
9 Network Function Services . 116
9.1 MB-SMF Services . 116
9.1.1 General . 116
9.1.2 Nmbsmf_TMGI service . 116
9.1.2.1 General . 116
9.1.2.2 Nmbsmf_TMGI_Allocate service operation . 116
9.1.2.3 Nmbsmf_TMGI_Deallocate service operation . 116
9.1.3 Nmbsmf_MBSSession service. 117
9.1.3.1 General . 117
9.1.3.2 Nmbsmf_MBSSession_ContextUpdate service operation . 117
9.1.3.3 Nmbsmf_MBSSession_ContextStatusSubscribe service operation . 118
9.1.3.4 Nmbsmf_MBSSession_ContextStatusNotify service operation . 118
9.1.3.5 Nmbsmf_MBSSession_ContextStatusUnsubscribe service operation . 118
9.1.3.6 Nmbsmf_MBSSession_Create service operation . 119
9.1.3.7 Nmbsmf_MBSSession_Update service operation . 119
9.1.3.8 Nmbsmf_MBSSession_Delete service operation . 119
9.1.3.9 Nmbsmf_MBSSession_StatusNotify service operation . 119
9.1.3.10 Nmbsmf_MBSSession_StatusSubscribe service operation. 120
9.1.3.11 Nmbsmf_MBSSession_StatusUnsubscribe service operation . 120
9.2 PCF Services . 120
9.2.1 General . 120
9.2.2 Npcf_MBSPolicyControl service . 120
9.2.2.1 General . 120
9.2.2.2 Npcf_MBSPolicyControl_Create service operation . 121
9.2.2.3 Void. 121
9.2.2.4 Npcf_MBSPolicyControl_Delete service operation . 121
9.2.2.5 Npcf_MBSPolicyControl_Update service operation . 121
9.2.3 Npcf_MBSPolicyAuthorization Service . 122
9.2.3.1 General . 122
9.2.3.2 Npcf_MBSPolicyAuthorization_Create service operation . 122
9.2.3.3 Npcf_MBSPolicyAuthorization_Update service operation . 122
9.2.3.4 Npcf_MBSPolicyAuthorization_Delete service operation . 122
9.3 AMF Services . 123
9.3.1 General . 123
9.3.2 Namf_MBSBroadcast service . 123
9.3.2.1 General . 123
9.3.2.2 Namf_MBSBroadcast_ContextCreate service operation . 123
9.3.2.3 Namf_MBSBroadcast_ContextUpdate service operation . 123
9.3.2.4 Namf_MBSBroadcast_ContextRelease service operation . 124
9.3.2.5 Namf_MBSBroadcast_ContextStatusNotify service operation . 124
9.3.3 Namf_MBSCommunication Service . 124
9.3.3.1 General . 124
9.3.3.2 Namf_MBSCommunication_N2MessageTransfer service operation . 124
9.4 NEF Services . 124
9.4.1 General . 124
9.4.2 Nnef_MBSTMGI service . 125
9.4.2.1 General . 125
9.4.2.2 Nnef_MBSTMGI_Allocate service operation . 125
9.4.2.3 Nnef_MBSTMGI_Deallocate service operation . 125
9.4.2.4 Nnef_MBSTMGI_ExpiryNotify service operation . 125
9.4.3 Nnef_MBSSession Service . 126
9.4.3.1 General . 126
9.4.3.2 Nnef_MBSSession_Create service operation. 126
9.4.3.3 Nnef_MBSSession_Update service operation . 126
9.4.3.4 Nnef_MBSSession_Delete service operation. 127
9.4.3.5 Nnef_MBSSession_StatusNotify service operation . 127
9.4.3.6 Nnef_MBSSession_StatusSubscribe service operation. 127
9.4.3.7 Nnef_MBSSession_StatusUnsubscribe service operation . 127
9.4.4 Nnef_MBSGroupMsgDelivery Service . 128
9.4.4.1 General . 128
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9.4.4.2 Nnef_MBSGroupMsgDelivery_Create service operation . 128
9.4.4.3 Nnef_MBSGroupMsgDelivery_Update service operation . 128
9.4.4.3a Nnef_MBSGroupMsgDelivery_Delete service operation . 128
9.4.4.4 Nnef_MBSGroupMsgDelivery_StatusNotify service operation . 128
9.5 MBSF Services . 129
Annex A (normative): Configuration options at Service and/or Application for MBS . 130
Annex B (informative): Service levels for multicast communication service . 132
Annex C (normative): Interworking at reference points MB2 and xMB . 133
Annex D (informative): Change history . 134
History . 139

ETSI
3GPP TS 23.247 version 18.8.0 Release 18 8 ETSI TS 123 247 V18.8.0 (2025-04)
Foreword
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