Content for TS 23.501 Word version: 18.5.0

1… 3… 4.2.3 4.2.4 4.2.5… 4.2.8… 4.2.8.2.2 4.2.8.2.3… 4.2.8.4… 4.2.9… 4.2.15… 4.3… 4.3.3 4.3.4 4.3.5 4.4… 4.4.6… 4.4.8… 5… 5.3… 5.3.3… 5.4… 5.5… 5.6… 5.6.7… 5.7… 5.7.2… 5.7.3… 5.7.4 5.7.5… 5.8… 5.8.2.11… 5.9… 5.10… 5.11… 5.15… 5.15.11… 5.16… 5.17… 5.18… 5.19… 5.21… 5.22… 5.27… 5.28… 5.29… 5.30… 5.31… 5.32… 5.32.6… 5.33… 5.34… 5.35… 5.38… 5.43… 6… 6.3… 6.3.8… 7… 7.2… 8… 8.2.4 8.2.5… 8.3… A… D… E… F G… G.3 G.4… H… J K… M… N… O… P…

...

1 Scope p. 23

The present document defines the Stage 2 system architecture for the 5G System. The 5G System provides data connectivity and services.

This specification covers both roaming and non-roaming scenarios in all aspects, including interworking between 5GS and EPS, mobility within 5GS, QoS, policy control and charging, authentication and in general 5G System wide features e.g. SMS, Location Services, Emergency Services.

ITU-T Recommendation I.130 [11] describes a three-stage method for characterisation of telecommunication services, and ITU-T Recommendation Q.65 [12] defines Stage 2 of the method.

TS 23.502 contains the stage 2 procedures and flows for 5G System and it is a companion specification to this specification.

TS 23.503 contains the stage 2 Policy Control and Charging architecture for 5G System and it is a companion specification to this specification.

2 References p. 23

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.

References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
For a specific reference, subsequent revisions do not apply.
For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.

[1]

TR 21.905: "Vocabulary for 3GPP Specifications".

[2]

TS 22.261: "Service requirements for next generation new services and markets; Stage 1".

[3]

TS 23.502: "Procedures for the 5G System; Stage 2".

[4]

TS 23.203: "Policies and Charging control architecture; Stage 2".

[5]

TS 23.040: "Technical realization of the Short Message Service (SMS); Stage 2".

[6]

TS 24.011: "Point-to-Point (PP) Short Message Service (SMS) support on mobile radio interface: Stage 3".

[7]

RFC 7157: "IPv6 Multihoming without Network Address Translation".

[8]

RFC 4191: "Default Router Preferences and More-Specific Routes".

[9]

RFC 2131: "Dynamic Host Configuration Protocol".

[10]

RFC 4862: "IPv6 Stateless Address Autoconfiguration".

[11]

ITU-T Recommendation I.130: "Method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN".

[12]

ITU-T Recommendation Q.65: "The unified functional methodology for the characterization of services and network capabilities".

[13]

TS 24.301: "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS): Stage 3".

[14] Void.

[15]

TS 23.228: "IP Multimedia Subsystem (IMS); Stage 2".

[16]

TS 22.173: "IMS Multimedia Telephony Service and supplementary services; Stage 1".

[17]

TS 23.122: "Non-Access-Stratum (NAS) functions related to Mobile Station in idle mode".

[18]

TS 23.167: "3rd Generation Partnership Project; Technical Specification Group Services and Systems Aspects; IP Multimedia Subsystem (IMS) emergency sessions".

[19]

TS 23.003: "Numbering, Addressing and Identification".

[20]

RFC 7542: "The Network Access Identifier".

[21]

TS 23.002: "Network Architecture".

[22]

TS 23.335: "User Data Convergence (UDC); Technical realization and information flows; Stage 2".

[23]

TS 23.221: "Architectural requirements".

[24]

TS 22.153: "Multimedia priority service".

[25]

TS 22.011: "Service Accessibility".

[26]

TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".

[27]

TS 38.300: "NR; NR and NG-RAN Overall Description".

[28]

TS 38.331: "NR; Radio Resource Control (RRC); Protocol Specification".

[29]

TS 33.501: "Security architecture and procedures for 5G system".

[30]

TS 36.300: "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2".

[31]

TS 37.340: "Evolved Universal Terrestrial Radio Access (E-UTRA) and NR; Multi-connectivity; Stage 2".

[32]

TS 23.214: "Architecture enhancements for control and user plane separation of EPC nodes; Stage 2".

[33]

TS 22.101: "3rd Generation Partnership Project; Technical Specification Group Services and Systems Aspects; Service aspects; Service principles".

[34]

TS 38.413: "NG-RAN; NG Application Protocol (NGAP)".

[35]

TS 33.126: "Lawful Interception Requirements".

[36]

TS 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".

[37]

TS 22.280: "Mission Critical Services Common Requirements (MCCoRe); Stage 1".

[38]

TS 23.379: "Functional architecture and information flows to support Mission Critical Push To Talk (MCPTT); Stage 2".

[39]

TS 23.281: "Functional architecture and information flows to support Mission Critical Video (MCVideo); Stage 2".

[40]

TS 23.282: "Functional architecture and information flows to support Mission Critical Data (MCData); Stage 2".

[41]

TS 32.240: "Charging management; Charging architecture and principles".

[42]

TS 38.401: "NG-RAN Architecture description".

[43]

TS 23.402: "Architecture enhancements for non-3GPP accesses".

[44]

RFC 4960: "Stream Control Transmission Protocol".

[45]

TS 23.503: "Policy and Charging Control Framework for the 5G System".

[46]

TS 23.041: "Public Warning System".

[47]

TS 24.501: "Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3".

[48]

TS 24.502: "Access to the 5G System (5GS) via non-3GPP access networks; Stage 3".

[49]

TS 29.500: "5G System; Technical Realization of Service Based Architecture; Stage 3".

[50]

TS 38.304: "NR; User Equipment (UE) procedures in idle mode".

[51]

TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification".

[52]

TS 36.304: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode".

[53] Void.

[54]

RFC 4861: "Neighbor Discovery for IP version 6 (IPv6)".

[55]

TS 23.271: "Functional stage 2 description of Location Services (LCS)".

[56]

TS 23.060: "General Packet Radio Service (GPRS); Service description; Stage 2".

[57]

RFC 4555: "IKEv2 Mobility and Multihoming Protocol (MOBIKE)".

[58]

TS 29.510: "5G System: Network function repository services; Stage 3".

[59]

TS 29.502: "5G System: Session Management Services: Stage 3".

[60]

RFC 7296: "Internet Key Exchange Protocol Version 2 (IKEv2)".

[61]

TS 23.380: "IMS Restoration Procedures".

[62]

TS 24.229: "IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3".

[63]

TS 23.292: "IP Multimedia Subsystem (IMS) centralized services; Stage 2".

[64]

TS 23.222: "Functional architecture and information flows to support Common API Framework for 3GPP Northbound APIs".

[65]

TS 29.244: "Interface between the Control Plane and the User Plane Nodes; Stage 3".

[66]

TS 32.421: "Telecommunication management; Subscriber and equipment trace; Trace concepts and requirements".

[67]

TS 32.290: "5G system; Services, operations and procedures of charging using Service Based Interface (SBI)".

[68]

TS 32.255: "5G Data connectivity domain charging; Stage 2".

[69]

TS 38.306: "NR; User Equipment -UE) radio access capabilities".

[70]

TS 36.306: "Evolved Universal Terrestrial Radio Access -E-UTRA); User Equipment -UE) radio access capabilities".

[71]

TS 29.518: "5G System; Access and Mobility Management Services; Stage 3".

[72] Void.

[73]

RFC 2865: "Remote Authentication Dial In User Service (RADIUS)".

[74]

RFC 3162: "RADIUS and IPv6".

[75]

TS 29.281: "General Packet Radio System (GPRS) Tunnelling Protocol User Plane (GTPv1-U)".

[76]

TS 26.238: "Uplink streaming".

[77]

TR 26.939: "Guidelines on the Framework for Live Uplink Streaming (FLUS)".

[78]

International Telecommunication Union (ITU), Standardization Bureau (TSB): "Operational Bulletin No. 1156"; http://handle.itu.int/11.1002/pub/810cad63-en (retrieved October 5, 2018).

[79]

TS 28.533: "Management and orchestration; Architecture framework".

[80]

TS 24.250: "Protocol for Reliable Data Service; Stage 3".

[81]

RFC 8684: "TCP Extensions for Multipath Operation with Multiple Addresses".

[82]

RFC 8803: "0-RTT TCP Convert Protocol".

[83]

IEEE Std 802.1CB-2017: "IEEE Standard for Local and metropolitan area networks-Frame Replication and Elimination for Reliability".

[84]

TS 23.316: "Wireless and wireline convergence access support for the 5G System (5GS)".

[85]

WiFi Alliance Technical Committee, Hotspot 2.0 Technical Task Group: "Hotspot 2.0 (Release 2) Technical Specification".

[86]

TS 23.288: "Architecture enhancements for 5G System (5GS) to support network data analytics services".

[87]

TS 23.273: "5G System (5GS) Location Services (LCS); Stage 2".

[88]

TS 23.216: "Single Radio Voice Call Continuity (SRVCC); Stage 2".

[89]

CableLabs DOCSIS MULPI: "Data-Over-Cable Service Interface Specifications DOCSIS 3.1, MAC and Upper Layer Protocols Interface Specification".

[90]

BBF TR-124 issue 5: "Functional Requirements for Broadband Residential Gateway Devices".

[91]

BBF TR-101 issue 2: "Migration to Ethernet-Based Broadband Aggregation".

[92]

BBF TR-178 issue 1: "Multi-service Broadband Network Architecture and Nodal Requirements".

[93]

BBF TR-456 issue 2: "AGF Functional Requirements".

[94]

BBF WT-457: "FMIF Functional Requirements".

[95] Void.

[96] Void.

[97]

IEEE Std 802.1AB-2016: "IEEE Standard for Local and metropolitan area networks -- Station and Media Access Control Connectivity Discovery".

[98]

IEEE Std 802.1Q-2022: "IEEE Standard for Local and metropolitan area networks--Bridges and Bridged Networks".

[99]

TS 38.423: "NG-RAN; Xn Application Protocol (XnAP)".

[100]

TS 36.413: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)".

[101]

TS 29.274: "Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C); Stage 3".

[102]

TS 23.632: "User Data Interworking, Coexistence and Migration; stage 2".

[103]

TS 29.563: "5G System (5GS); HSS services for interworking with UDM; Stage 3".

[104]

IEEE Std 802.1AS-2020: "IEEE Standard for Local and metropolitan area networks--Timing and Synchronization for Time-Sensitive Applications".

[105]

TS 22.104: "Service requirements for cyber-physical control applications in vertical domains".

[106]

IEEE Std 802.11-2012: "IEEE Standard for Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications".

[107]

IEEE Std 1588-2008: "IEEE Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems".

[108]

TS 28.552: "Management and orchestration; 5G performance measurements".

[109]

TS 24.193: "Access Traffic Steering, Switching and Splitting; Stage 3".

[110]

TS 24.526: "User Equipment (UE) policies for 5G System (5GS); Stage 3".

[111]

TS 22.186: "Enhancement of 3GPP support for V2X scenarios; Stage 1".

[112]

TR 38.824: "Study on physical layer enhancements for NR ultra-reliable and low latency case (URLLC)".

[113]

IEEE: "Guidelines for Use of Extended Unique Identifier (EUI), Organizationally Unique Identifier (OUI), and Company ID (CID)": https://standards.ieee.org/content/dam/ieee-standards/standards/web/documents/tutorials/eui.pdf.

[114]

TS 32.256: "Charging Management; 5G connection and mobility domain charging; Stage 2".

[115]

TS 33.210: "Network Domain Security (NDS); IP network layer security".

[116]

TS 38.415: "PDU Session User Plane Protocol".

[117]

TS 24.535: "Device-side Time-Sensitive Networking (TSN) Translator (DS-TT) to network-side TSN Translator (NW-TT) protocol aspects; Stage 3".

[118]

TS 32.274: "Charging Management; Short Message Service (SMS) charging".

[119]

TS 23.008: "Organization of subscriber data".

[120]

TS 38.314: "NR; Layer 2 measurements".

[121]

TS 23.287: "Architecture enhancements for 5G System (5GS) to support Vehicle-to-Everything (V2X) services".

[122]

TS 29.503: "5G System; Unified Data Management Services; Stage 3".

[123]

TS 32.254: "Charging management; Exposure function Northbound Application Program Interfaces (APIs) charging".

[124]

TS 33.535: "Authentication and Key Management for Applications based on 3GPP credentials in the 5G System (5GS)".

[125]

TS 38.410: "NG-RAN; NG general aspects and principles".

[126]

IEEE Std 1588: "IEEE Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems", Edition 2019.

[127]

ST 2059-2:2015: "SMPTE Standard - SMPTE Profile for Use of IEEE-1588 Precision Time Protocol in Professional Broadcast Applications".

[128]

TS 23.304: "Proximity based Services (ProSe) in the 5G System (5GS)".

[129]

TS 23.247: "Architectural enhancements for 5G multicast-broadcast services".

[130]

TS 23.548: "5G System Enhancements for Edge Computing; Stage 2".

[131]

IEEE Std 802.3: "Ethernet".

[132]

TS 29.561: "5G System; Interworking between 5G Network and external Data Networks; Stage 3".

[133]

TS 29.513: "Policy and Charging Control signalling flows and QoS parameter mapping; Stage 3".

[134]

TS 23.558: "Architecture for enabling Edge Applications (EA)".

[135]

TS 26.501: "5G Media Streaming (5GMS); General description and architecture".

[136]

TS 23.256: "Support of Uncrewed Aerial Systems (UAS) connectivity, identification and tracking; Stage 2".

[137]

GSMA NG.116: "Generic Network Slice Template".

[138]

RFC 3948: "UDP Encapsulation of IPsec ESP Packets".

[139]

TS 24.539: "5G System (5GS); Network to TSN translator (TT) protocol aspects; Stage 3".

[140]

TS 33.220: "Generic Authentication Architecture (GAA); Generic bootstrapping architecture".

[141]

TS 33.223: "Generic Authentication Architecture (GAA); Generic Bootstrapping Architecture (GBA) Push function".

[142]

TS 23.540: "Technical realization of Service Based Short Message Service; Stage 2".

[143]

TS 38.321: "NR; Medium Access Control (MAC) protocol specification".

[144]

TS 29.525: "5G System; UE Policy Control Service; Stage 3".

[145]

TS 29.505: "5G System; Usage of the Unified Data Repository Services for Subscription Data; Stage 3".

[146]

IEEE Std P802.1Qdj-d1.3: "IEEE Draft Standard for Local and metropolitan area networks - Bridges and Bridged Networks - Amendment XX: Configuration Enhancements for Time-Sensitive Networking".

[147] Void.

[148]

TS 28.557: "Management and orchestration; Management of Non-Public Networks (NPN)".

[149]

TS 28.541: "Management and orchestration; 5G Network Resource Model (NRM)".

[150]

RFC 8655: "Deterministic Networking Architecture".

[151]

RFC 8343: "A YANG Data Model for Interface Management".

[152]

RFC 8344: "A YANG Data Model for IP Management".

[153]

RFC 7224: "IANA Interface Type YANG Module".

[154]

draft-ietf-detnet-yang-17: "Deterministic Networking (DetNet) YANG Model".

[155]

RFC 6241: "Network Configuration Protocol (NETCONF)".

[156]

RFC 8040: "RESTCONF Protocol".

[157]

RFC 8939: "Deterministic Networking (DetNet) Data Plane: IP".

[158]

RFC 5279: "A Uniform Resource Name (URN) Namespace for the 3rd Generation Partnership Project (3GPP)".

[159]

RFC 9330: "Low Latency, Low Loss, Scalable Throughput (L4S) Internet Service: Architecture".

[160]

RFC 9331: "Explicit Congestion Notification (ECN) Protocol for Very Low Queuing Delay (L4S)".

[161]

RFC 9332: "Dual-Queue Coupled Active Queue Management (AQM) for Low Latency, Low Loss, and Scalable Throughput (L4S)".

[162]

RFC 6603: "Prefix Exclude Option for DHCPv6-based Prefix Delegation".

[163]

RFC 8415: "Dynamic Host Configuration Protocol for IPv6 (DHCPv6)".

[164]

ITU-T Recommendation G.810: "Definitions and terminology for synchronization networks".

[165]

TS 38.470: "NG-RAN; F1 general aspects and principles".

[166]

RFC 9000: "QUIC: A UDP-Based Multiplexed and Secure Transport".

[167]

RFC 9001: "Using TLS to Secure QUIC".

[168]

RFC 9002: "QUIC Loss Detection and Congestion Control".

[169]

RFC 9221: "An Unreliable Datagram Extension to QUIC".

[170]

RFC 9298: "Proxying UDP in HTTP".

[171]

RFC 9114: "Hypertext Transfer Protocol Version 3 (HTTP/3)".

[172]

RFC 9297: "HTTP Datagrams and the Capsule Protocol".

[173]

RFC 9220: "Bootstrapping WebSockets with HTTP/3".

[174]

draft-ietf-quic-multipath-04: "Multipath Extension for QUIC".

[175]

TS 28.530: "Management and orchestration; Concepts, use cases and requirements".

[176]

TS 28.531: "Management and orchestration; Provisioning".

[177]

TS 23.434: "Service Enabler Architecture Layer for Verticals (SEAL); Functional architecture and information flows".

[178]

IEEE Std 802.1CBdb-2021: "Amendment 2: Extend Stream Identification Functions".

[179]

TS 26.522: "5G Real-time Media Transport Protocol Configurations".
→ to date, still a draft

[180]

TS 23.586: "Architectural Enhancements to support Ranging based services and Sidelink Positioning".

[181]

TS 23.542: "Application layer support for Personal IoT Network".

[182]

RFC 8415: "Dynamic Host Configuration Protocol for IPv6 (DHCPv6)".

[183]

TS 29.571: "5G System; Common Data Types for Service Based Interfaces; Stage 3".

[184]

TS 23.289: "Mission Critical services over 5G System; Stage 2".

[185]

RFC 3550: "RTP: A Transport Protocol for Real-Time Applications".

[186]

RFC 3711: "The Secure Real-time Transport Protocol (SRTP)".

[187]

RFC 6184: "RTP Payload Format for H.264 Video".

[188]

RFC 7798: "RTP Payload Format for High Efficiency Video Coding (HEVC)".

[189]

RFC 8285: "A General Mechanism for RTP Header Extensions".

[190]

TS 28.405: "Quality of Experience (QoE) measurement collection; Control and configuration".

[191]

TS 37.355: "LTE Positioning Protocol (LPP)".

[192]

TS 32.422: "Telecommunication management; Subscriber and equipment trace; Trace control and configuration management".

[193]

RFC 3168: "The Addition of Explicit Congestion Notification (ECN) to IP".