ETSI TS 123 304 V17.6.0 (2023-04)

5G; Proximity based Services (ProSe) in the 5G System (5GS) (3GPP TS 23.304 version 17.6.0 Release 17)

RTS/TSGS-0223304vh60

General Information

• Status: Not Published
• Technical Committee: 3GPP SA 2 - Architecture
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Completion Date: 20-Apr-2023

Standards Content (Sample)

ETSI TS 123 304 V17.6.0 (2023-04)






TECHNICAL SPECIFICATION
5G;
Proximity based Services (ProSe) in the 5G System (5GS)
(3GPP TS 23.304 version 17.6.0 Release 17)

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3GPP TS 23.304 version 17.6.0 Release 17 1 ETSI TS 123 304 V17.6.0 (2023-04)

Reference
RTS/TSGS-0223304vh60
Keywords
5G
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3GPP TS 23.304 version 17.6.0 Release 17 2 ETSI TS 123 304 V17.6.0 (2023-04)
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ETSI

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3GPP TS 23.304 version 17.6.0 Release 17 3 ETSI TS 123 304 V17.6.0 (2023-04)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 7
1 Scope . 9
2 References . 9
3 Definitions of terms and abbreviations. 10
3.1 Terms . 10
3.2 Abbreviations . 11
4 Architecture model and concepts . 12
4.1 General concept . 12
4.2 Architectural reference model . 12
4.2.1 Non-roaming reference architecture . 12
4.2.2 Roaming reference architecture . 14
4.2.3 Inter-PLMN reference architecture . 15
4.2.4 AF-based service parameter provisioning . 17
4.2.5 Reference points . 18
4.2.6 Service-based interfaces . 19
4.2.7 5G ProSe UE-to-Network Relay reference architecture . 19
4.2.7.1 5G ProSe Layer-3 UE-to-Network Relay reference architecture . 19
4.2.7.2 5G ProSe Layer-2 UE-to-Network Relay reference architecture . 21
4.3 Functional Entities . 22
4.3.1 UE . 22
4.3.2 5G DDNMF . 23
4.3.2.1 General . 23
4.3.2.2 5G DDNMF Discovery . 23
4.3.3 PCF . 23
4.3.4 AMF. 24
4.3.5 UDM . 24
4.3.6 UDR . 24
4.3.7 NRF . 24
4.3.8 ProSe Application Server . 25
4.3.9 5G ProSe UE-to-Network Relay . 25
4.3.9.1 General . 25
4.3.9.2 5G ProSe Layer-3 UE-to-Network Relay . 25
4.3.9.3 5G ProSe Layer-2 UE-to-Network Relay . 26
4.3.10 SMF . 26
4.3.11 NEF . 26
5 High level functionality and features . 26
5.1 Authorization and Provisioning for ProSe service . 26
5.1.1 General . 26
5.1.2 Authorization and Provisioning for 5G ProSe Direct Discovery . 28
5.1.2.1 Policy/Parameter provisioning for 5G ProSe Direct Discovery . 28
5.1.2.2 Principles for applying parameters for 5G ProSe Direct Discovery. 29
5.1.3 Authorization and Provisioning for 5G ProSe Direct Communication . 31
5.1.3.1 Policy/Parameter provisioning for 5G ProSe Direct Communication . 31
5.1.3.2 Principles for applying parameters for 5G ProSe Direct Communication . 32
5.1.4 Authorization and Provisioning for 5G ProSe UE-to-Network Relay . 34
5.1.4.1 Policy/Parameter provisioning for 5G ProSe UE-to-Network Relay . 34
5.1.4.2 Principles for applying parameters for 5G ProSe UE-to-Network Relay . 36
5.1.4.2.1 Principles for applying parameters for ProSe UE-to-Network Relay discovery . 36
5.1.4.2.2 Principles for applying parameters for 5G ProSe UE-to-Network Relay communication . 37
5.1.4.3 Network controlled security procedures for 5G ProSe UE-to-Network Relay . 38
ETSI

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3GPP TS 23.304 version 17.6.0 Release 17 4 ETSI TS 123 304 V17.6.0 (2023-04)
5.1.4.3.1 General . 38
5.1.4.3.2 Control Plane based security procedures for 5G ProSe UE-to-Network Relay . 38
5.1.4.3.3 User Plane based security procedures . 39
5.2 5G ProSe Direct Discovery . 39
5.2.1 General . 39
5.2.2 5G ProSe Direct Discovery Models . 39
5.2.3 5G ProSe UE-to-Network Relay Discovery . 39
5.2.4 5G ProSe Direct Discovery Characteristics . 40
5.3 5G ProSe Direct Communication . 40
5.3.1 General . 40
5.3.2 Broadcast mode 5G ProSe Direct Communication . 41
5.3.3 Groupcast mode 5G ProSe Direct Communication . 41
5.3.4 Unicast mode 5G ProSe Direct Communication . 41
5.4 5G ProSe UE-to-Network Relay . 42
5.4.1 5G ProSe Layer-3 UE-to-Network Relay . 42
5.4.1.1 General . 42
5.4.1.2 5G ProSe Layer-3 UE-to-Network Relay with N3IWF support . 42
5.4.1.3 Policy control and session binding to support 5G ProSe Layer-3 UE-to-Network Relay without
N3IWF . 43
5.4.2 5G ProSe Layer-2 UE-to-Network Relay . 43
5.4.3 Mobility Restrictions for 5G ProSe UE-to-Network Relaying . 43
5.5 IP address allocation . 44
5.5.1 General . 44
5.5.1.1 IP address allocation for unicast mode of 5G ProSe direct communication . 44
5.5.1.2 IP address allocation for broadcast and groupcast modes of 5G ProSe direct communication . 44
5.5.1.3 IP address allocation for communication with a 5G ProSe Layer-3 ProSe UE-to-Network Relay . 45
5.5.2 IPv6 Prefix Delegation via DHCPv6 for 5G ProSe Layer-3 UE-to-Network Relay. 45
5.6 QoS handling . 46
5.6.1 QoS handling for 5G ProSe Direct Communication . 46
5.6.2 QoS handling for 5G ProSe UE-to-Network Relay operations . 47
5.6.2.1 QoS handling for 5G ProSe Layer-3 UE-to-Network Relay without N3IWF . 47
5.6.2.2 QoS handling for 5G ProSe Layer-3 UE-to-Network relay with N3IWF . 49
5.6.2.3 QoS handling for 5G ProSe Layer-2 UE-to-Network Relay . 50
5.7 Subscription to 5G ProSe . 50
5.8 Identifiers . 51
5.8.1 Identifiers for 5G ProSe Direct Discovery . 51
5.8.1.0 General . 51
5.8.1.1 ProSe Application ID . 51
5.8.1.2 Destination Layer-2 ID . 51
5.8.1.3 Source Layer-2 ID . 51
5.8.1.4 ProSe Application Code . 52
5.8.1.5 ProSe Restricted Code. 52
5.8.1.6 ProSe Query Code . 52
5.8.1.7 ProSe Response Code . 52
5.8.1.8 User Info ID . 52
5.8.1.9 ProSe Discovery UE ID . 52
5.8.1.10 Restricted ProSe Application User ID. 52
5.8.1.11 Announcing PLMN ID . 52
5.8.1.12 Announcer Info . 52
5.8.1.13 Discoverer Info . 52
5.8.1.14 Target Info. 52
5.8.1.15 Discoveree Info . 52
5.8.1.16 Application Layer Group ID . 53
5.8.2 Identifiers for 5G ProSe Direct Communication . 53
5.8.2.1 General . 53
5.8.2.2 Identifiers for broadcast mode 5G ProSe direct communication. 53
5.8.2.3 Identifiers for groupcast mode 5G ProSe direct communication . 53
5.8.2.4 Identifiers for unicast mode 5G ProSe direct communication . 53
5.8.3 Identifiers for 5G ProSe UE-to-Network Relay . 54
5.8.3.1 Common identifiers for 5G ProSe UE-to-Network Relay. 54
5.8.3.2 Identifiers for 5G ProSe Layer-3 UE-to-Network Relay. 55
5.8.3.3 Identifiers for 5G ProSe Layer-2 UE-to-Network Relay. 55
ETSI

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3GPP TS 23.304 version 17.6.0 Release 17 5 ETSI TS 123 304 V17.6.0 (2023-04)
5.9 Support for 5G ProSe for UEs in limited service state . 56
5.10 PC5 operation in EPS for Public Safety UE . 56
5.11 Communication path selection between PC5 and Uu reference points . 56
5.12 NAS level congestion control for 5G ProSe UE-to-Network Relay . 57
5.13 Support for PC5 DRX operations . 57
5.13.1 General . 57
5.13.2 PC5 DRX operations for 5G ProSe Direct Discovery and 5G ProSe UE-to-Network Relay
Discovery . 57
5.13.3 PC5 DRX operations for 5G ProSe Direct Communication and 5G ProSe UE-to-Network Relay
Co mmunica tion . 58
6 Functional description and information flows . 58
6.1 Control and user plane stacks . 58
6.1.1 Control Plane . 58
6.1.1.1 General . 58
6.1.1.2 UE - UE . 59
6.1.1.2.1 Discovery plane PC5 interface . 59
6.1.1.2.2 PC5 Signalling Protocol . 59
6.1.1.3 UE - 5G DDNMF . 60
6.1.1.4 5G DDNMF – UDM . 60
6.1.1.5 5G DDNMF – 5G DDNMF . 60
6.1.1.6 5G DDNMF – ProSe Application Server . 60
6.1.1.7 5G ProSe UE-to-Network Relay . 60
6.1.1.7.1 5G ProSe Layer-3 UE-to-Network Relay . 60
6.1.1.7.2 5G ProSe Layer-2 UE-to-Network Relay . 61
6.1.2 User Plane . 62
6.1.2.1 General . 62
6.1.2.2 UE - UE . 62
6.1.2.3 5G ProSe UE-to-Network Relay . 64
6.1.2.3.1 5G ProSe Layer-3 UE-to-Network Relay . 64
6.1.2.3.2 5G ProSe Layer-2 UE-to-Network Relay . 64
6.2 Procedures for Service Authorization and Provisioning to UE . 65
6.2.1 General . 65
6.2.2 PCF based Service Authorization and Provisioning to UE . 65
6.2.3 PCF discovery . 66
6.2.4 Procedure for UE triggered ProSe Policy provisioning . 66
6.2.5 AF-based service parameter provisioning for ProSe over control plane . 67
6.3 5G ProSe Direct Discovery . 67
6.3.1 5G ProSe Direct Discovery with 5G DDNMF . 67
6.3.1.1 Overview . 67
6.3.1.2 Overall procedure for 5G ProSe Direct Discovery (Model A) .
...