TS 23.501 v20.2.0 · The 5G system architecture
The whole document
1180 clauses in the order they appear. The bar shows how much text each part holds. Open one to see what is inside it and which chapter teaches it.
3 Definitions and abbreviations 5,744 words · 3 of 3 clauses taught
4 Architecture model and concepts 12,841 words · 73 of 75 clauses taught
5 High level features 300,452 words · 839 of 841 clauses taught
- 5.1 General
- 5.2 Network Access Control 7. Every name the system uses
- 5.3 Registration and Connection Management 9. Registration, reachability and paging
- 5.4 3GPP access specific aspects 9. Registration, reachability and paging10. Radio, Wi-Fi, cable — every way in
- 5.5 Non-3GPP access specific aspects 10. Radio, Wi-Fi, cable — every way in
- 5.6 Session Management 12. The connection to a data network
- 5.7 QoS model 14. What the network promises
- 5.8 User Plane Management 13. Where the packets actually go
- 5.9 Identifiers 7. Every name the system uses
- 5.10 Security aspects 16. Who you are and who may listen
- 5.11 Support for Dual Connectivity, Multi-Connectivity 9. Registration, reachability and paging
- 5.12 Charging 15. Rules, and paying for them
- 5.13 Support for Edge Computing 20. Computing close by, and opening the door
- 5.14 Policy Control 15. Rules, and paying for them
- 5.15 Network slicing 17. One network, many networks
- 5.16 Support for specific services 21. Emergency calls, messages, voice and location
- 5.17 Interworking and Migration 19. Living next to 4G
- 5.18 Network Sharing 26. Relays, satellites, femtos and shared networks
- 5.19 Control Plane Load Control, Congestion and Overload Control 27. Overload, energy, deployment and the rest
- 5.20 External Exposure of Network Capability 20. Computing close by, and opening the door
- 5.20a Data Collection from an AF 20. Computing close by, and opening the door
- 5.20b Support exposure of DNN and S-NSSAI specific Group Parameters 20. Computing close by, and opening the door
- 5.20c Provisioning of traffic characteristics and monitoring of performance characteristics for a group 20. Computing close by, and opening the door
- 5.20d User Plane Direct 5GS Information Exposure 20. Computing close by, and opening the door
- 5.21 Architectural support for virtualized deployments 27. Overload, energy, deployment and the rest
- 5.22 System Enablers for priority mechanism 27. Overload, energy, deployment and the rest
- 5.23 Supporting for Asynchronous Type Communication 27. Overload, energy, deployment and the rest
- 5.24 3GPP PS Data Off 27. Overload, energy, deployment and the rest
- 5.25 Support of OAM Features 27. Overload, energy, deployment and the rest
- 5.26 Configuration Transfer Procedure 27. Overload, energy, deployment and the rest
- 5.27 Enablers for Time Sensitive Communications, Time Synchronization and Deterministic Networking 22. Clocks, TSN and deterministic delivery
- 5.28 Support of integration with TSN, Time Sensitive Communications, Time Synchronization and Deterministic Networking 22. Clocks, TSN and deterministic delivery
- 5.28a Support for TSN enabled Transport Network 22. Clocks, TSN and deterministic delivery
- 5.29 Support for 5G LAN-type service 24. Networks that are not for everybody
- 5.30 Support for non-public networks 24. Networks that are not for everybody
- 5.31 Support for Cellular IoT 25. Small devices, small messages
- 5.32 Support for ATSSS 11. Using two accesses at once
- 5.33 Support for Ultra Reliable Low Latency Communication 23. Very fast, very reliable, very picky
- 5.34 Support of deployments topologies with specific SMF Service Areas 26. Relays, satellites, femtos and shared networks
- 5.35 Support for Integrated access and backhaul (IAB) 26. Relays, satellites, femtos and shared networks
- 5.35A Support for Mobile Base Station Relay (MBSR) 26. Relays, satellites, femtos and shared networks
- 5.36 RIM Information Transfer 27. Overload, energy, deployment and the rest
- 5.37 Support for high data rate low latency services, eXtended Reality (XR) and interactive media services 23. Very fast, very reliable, very picky
- 5.38 Support for Multi-USIM UE 27. Overload, energy, deployment and the rest
- 5.39 Remote provisioning of credentials for NSSAA or secondary authentication/authorization 16. Who you are and who may listen
- 5.40 Support of Disaster Roaming with Minimization of Service Interruption 27. Overload, energy, deployment and the rest
- 5.41 NR RedCap and NR eRedCap UEs differentiation 26. Relays, satellites, femtos and shared networks
- 5.42 Support of Non-seamless WLAN offload 10. Radio, Wi-Fi, cable — every way in
- 5.43 Support for 5G Satellite Backhaul 26. Relays, satellites, femtos and shared networks
- 5.44 Support of Personal IoT network service 24. Networks that are not for everybody
- 5.45 QoS Monitoring 14. What the network promises
- 5.46 Assistance to AI/ML Operations in the Application Layer 20. Computing close by, and opening the door
- 5.47 Support for Network Controlled Repeater (NCR) 26. Relays, satellites, femtos and shared networks
- 5.48 Subscription-based routing to a target core network 27. Overload, energy, deployment and the rest
- 5.49 Support for Mobile gNB with Wireless Access Backhauling (MWAB) 26. Relays, satellites, femtos and shared networks
- 5.50 Support for NR Femto 26. Relays, satellites, femtos and shared networks
- 5.51 Support of Energy Efficiency and Energy Saving 27. Overload, energy, deployment and the rest
- 5.52 QoS differentiation of traffic for Non-3GPP Device Identifier 27. Overload, energy, deployment and the rest
- 5.53 Support for Dynamic Network Identity 27. Overload, energy, deployment and the rest
- 5.54 Mitigating abnormal user plane traffic 27. Overload, energy, deployment and the rest
6 Network Functions 35,847 words · 101 of 102 clauses taught
7 Network Function Services and descriptions 6,344 words · 15 of 42 clauses taught
8 Control and User Plane Protocol Stacks 2,169 words · 25 of 25 clauses taught
Annex D 5GS support for Non-Public Network deployment options 2,895 words · 10 of 10 clauses taught
- D.1 Introduction 24. Networks that are not for everybody
- D.2 Support of Non-Public Network as a network slice of a PLMN 24. Networks that are not for everybody
- D.3 Support for access to PLMN services via Stand-alone Non-Public Network and access to Stand-alone Non Public Network services via PLMN 24. Networks that are not for everybody
- D.4 Support for UE capable of simultaneously connecting to an SNPN and a PLMN 24. Networks that are not for everybody
- D.5 Support for keeping UE in CM-CONNECTED state in overlay network when accessing services via NWu 24. Networks that are not for everybody
- D.6 Support for session/service continuity between SNPN and PLMN when using N3IWF 24. Networks that are not for everybody
- D.7 Guidance for underlay network to support QoS differentiation for User Plane IPsec Child SA 24. Networks that are not for everybody
Annex E Communication models for NF/NF services interaction 379 words · 1 of 2 clauses taught
Annex G SCP Deployment Examples 1,700 words · 9 of 11 clauses taught
Annex H PTP usage guidelines 1,116 words · 5 of 5 clauses taught
Annex I TSN usage guidelines 679 words · 2 of 2 clauses taught
Annex K Port and user plane node management information exchange 7,060 words · 11 of 11 clauses taught
Annex M Interworking with TSN deployed in the Transport Network 2,225 words · 3 of 3 clauses taught
Annex N Support for access to Localized Services 1,644 words · 10 of 10 clauses taught
- N.1 General 24. Networks that are not for everybody
- N.2 Enabling access to Localized Services 24. Networks that are not for everybody
- N.3 Selection of network providing access to Localized Services 24. Networks that are not for everybody
- N.4 Enabling the UE access to Localized Services 24. Networks that are not for everybody
- N.5 Support for leaving network that provides access to Localized Services 24. Networks that are not for everybody
- N.6 Configuration of Credentials Holder for determining SNPN selection information 24. Networks that are not for everybody
Annex O Allowing UE to simultaneously send data to different groups with different QoS policy 1,977 words · 4 of 4 clauses taught
- O.1 A PDU Session with multiple QoS Flows for different groups 23. Very fast, very reliable, very picky
- O.2 Multiple PDU Sessions for different groups 23. Very fast, very reliable, very picky
- O.3 A PDU Session targeting a predefined group formed of multiple sub-groups 23. Very fast, very reliable, very picky
Annex P Personal IoT Networks 492 words · 3 of 3 clauses taught
Annex R 5GS support for Indirect Network Sharing deployment 114 words · 2 of 2 clauses taught
Annex S Architecture examples and protocol stacks for MWAB support 1,119 words · 7 of 7 clauses taught
- S.1 General 26. Relays, satellites, femtos and shared networks
- S.2 System architecture for MWAB operation in PLMNs 26. Relays, satellites, femtos and shared networks
- S.3 Architectures to support MWAB in SNPN case 26. Relays, satellites, femtos and shared networks
- S.4 Protocol Stacks for MWAB node 26. Relays, satellites, femtos and shared networks
Annex T Network Energy consumption information calculation 413 words · 3 of 3 clauses taught
Annex U Support of traffic offloading at the H-UPF deployed nearby VPLMN for HR PDU Session 331 words · 4 of 4 clauses taught
- U.1 General 18. Being served by somebody else's network27. Overload, energy, deployment and the rest
- U.2 PDU Session establishment for supporting traffic offloading at the H-UPF 18. Being served by somebody else's network27. Overload, energy, deployment and the rest
- U.3 Re-establishment of PDU Session due to UP Path failure 18. Being served by somebody else's network27. Overload, energy, deployment and the rest