3GPP 23-series — Technical Realization – Stage 2

The technical specifications (TS) are displayed in blue, while the reports (TR) are shown in green. TS that have been discontinued in earlier releases are indicated with a light blue color. TR in the '9' range that have been stopped are highlighted in light green. TS or TR with a yellow background indicate those updated at the latest Q3-2024 Plenary Meetings. The new ones are displayed with a single red dotted overline.

002 003 007 008 009 011 012 014 015 016 018 031 032 034 035 038 039 040 041 042 048 053 057 060 066 067 072 078 079 081 082 083 084 085 086 087 088 090 091 093 094 096 097 101 107 108 110 116 119 121 122 125 127 135 139 140 141 142 146 153 161 167 171 172 179 180 195 198 202 203 204 205 206 207 214 216 218 221 222 226 227 228 231 234 236 237 240 246 247 251 255 256 259 261 271 272 273 278 279 280 281 282 283 284 285 286 287 288 289 292 303 304 316 327 333 334 335 379 380 401 402 406 417 433 434 435 436 468 479 501 502 503 506 507 508 509 511 517 521 527 540 542 548 554 558 586 611 632 682 700‑01 700‑03 700‑05 700‑06 700‑07 700‑08 700‑-10 700‑11 700‑12 700‑17 700‑18 700‑20 700‑21 700‑23 700‑24 700‑25 700‑27 700‑28 700‑29 700‑33 700‑34 700‑36 700‑38 700‑40 700‑41 700‑45 700‑46 700‑47 700‑48 700‑49 700‑53 700‑55 700‑58 700‑59 700‑60 700‑61 700‑62 700‑63 700‑64 700‑66 700‑68 700‑70 700‑71 700‑72 700‑74 700‑75 700‑76 700‑78 700‑79 700‑80 700‑81 700‑82 700‑85 700‑86 700‑87 700‑88 700‑89 700‑90 700‑91 700‑93 700‑95 700‑96 700‑97 700‑98 700‑99 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 718 719 720 721 722 724 725 726 729 730 731 732 733 734 735 737 740 741 742 743 744 745 746 748 749 750 751 752 754 755 756 757 758 759 761 764 768 769 770 771 773 774 776 778 779 780 781 782 783 784 785 786 789 790 791 792 793 794 795 796 797 798 799 800 802 804 806 810 811 812 813 814 815 816 820 824 826 828 829 830 831 832 834 838 839 840 841 842 843 844 845 846 847 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 865 866 867 868 869 870 871 872 873 875 877 879 882 883 885 886 887 888 889 890 891 892 893 894 895 896 897 898 903 908 909 910 911 912 919 923 924 930 941 958 972 973 975 976 977 979 981

click here to see the new 23-series documents introduced at each 3GPP quarterly Plenary Meeting

23.0… 23.1… 23.2… 23.3… 23.4… 23.5… 23.6… 23.7… 23.8… 23.9…

a vertical bar on the left means that the full text and graphic content are available online for this TS/TR
when thick, it means that all figures have been redrawn


TS 23.002	REL 3 → 18	Network Architecture
TS 23.003	REL 3 → 19	Numbering, Addressing and Identification
TS 23.007	REL 3 → 19	Restoration Procedures
TS 23.008	REL 3 → 18	Organization of Subscriber Data
TS 23.009	REL 3 → 18	Handover Procedures
TS 23.011	REL 3 → 18	Technical Realization of Supplementary Services
TS 23.012	REL 3 → 18	Location Management Procedures
TS 23.014	REL 3 → 18	Support of DTMF Signalling
TS 23.015	REL 3 → 19	ODB – Operator Determined Call Barring
TS 23.016	REL 3 → 18	Subscriber Data Management
TS 23.018	REL 3 → 18	Basic Call Handling
TS 23.031	REL 3 → 18	FIGS – Fraud Information Gathering System
TS 23.032	REL 3 → 18	GAD – Universal Geographical Area Description
TS 23.034	REL 3 → 18	HSCSD – High Speed Circuit Switched Data
TS 23.035	REL 3 → 18	IST – Immediate Service Termination
TS 23.038	REL 3 → 18	Alphabets and Language-specific information
TR 23.039	REL 3 → 5	Interface Protocols for the Connection of SMSCs to SMEs
TS 23.040	REL 3 → 18	SMS – Short Message Service
TS 23.041	REL 3 → 18	CBS – Cell Broadcast Service
TS 23.042	REL 3 → 18	Compression algorithm for text messaging services
TS 23.048	REL 4 → 5	USAT/SAT – Security mechanisms
TS 23.053	REL 4 → 18	TFO – Tandem Free Operation
TS 23.057	REL 3 → 18	MExE – Mobile Execution Environment
TS 23.060	REL 3 → 18	GPRS – General Packet Radio Service
TS 23.066	REL 3 → 18	MNP – Mobile Number Portability
TS 23.067	REL 3 → 18	eMLPP – enhanced Multi-Level Precedence and Pre-emption
TS 23.072	REL 3 → 18	CD – Call Deflection
TS 23.078	REL 3 → 18	CAMEL Phase X
TS 23.079	REL 3 → 18	SOR – Support of Optimal Routeing
TS 23.081	REL 3 → 18	CLIP/CLIR/COLP/COLR – Line Identification
TS 23.082	REL 3 → 18	CF – Call Forwarding
TS 23.083	REL 3 → 18	CW/HOLD – Call Waiting and Call Hold
TS 23.084	REL 3 → 18	MPTY – MultiParty
TS 23.085	REL 3 → 18	CUG – Closed User Group
TS 23.086	REL 3 → 18	AoC – Advice of Charge
TS 23.087	REL 3 → 18	UUS – User-to-User Signalling
TS 23.088	REL 3 → 18	CB – Call Barring
TS 23.090	REL 3 → 18	USSD – Unstructured Supplementary Service Data
TS 23.091	REL 3 → 18	ECT – Explicit Call Transfer
TS 23.093	REL 3 → 18	CCBS – Completion of Calls to Busy Subscriber
TS 23.094	REL 3 → 18	FM – Follow-Me
TS 23.096	REL 3 → 18	CNAP – Calling Name Presentation
TS 23.097	REL 3 → 18	MSP – Multiple Subscriber Profile


TS 23.101	REL 3 → 18	General UMTS Architecture
TS 23.107	REL 3 → 18	QoS Concept and Architecture
TS 23.108	REL 3 → 18	Mobile Radio Interface Layer 3 – Core Network Protocols
TS 23.110	REL 3 → 18	UMTS Access Stratum – Services and Functions
TS 23.116	REL 3 → 18	Super-Charger
TS 23.119	REL 3 → 18	GLR – Gateway Location Register
TS 23.121	REL 3	Architectural Requirements for Release 99
TS 23.122	REL 3 → 19	NAS Functions related to MS in Idle Mode
TS 23.125	REL 6	Overall high level functionality and architecture impacts of flow based charging
TS 23.127	REL 3 → 5	Virtual Home Environment (VHE) / Open Service Access (OSA)
TS 23.135	REL 3 → 18	Multicall
TS 23.139	REL 11 → 18	3GPP system / Fixed Broadband Access Network Interworking
TS 23.140	REL 3 → 6	MMS – Multimedia Messaging Service
TS 23.141	REL 6 → 18	Presence – Architecture and Functional Description
TS 23.142	REL 9 → 18	Value-added Services for SMS – Interface and Signalling Flow
TS 23.146	REL 4 → 18	Facsimile Group 3 non-Transparent
TS 23.153	REL 4 → 18	OoBTC – Out of Band Transcoder Control
TS 23.161	REL 13 → 18	Network-Based IP Flow Mobility
TS 23.167	REL 7 → 18	IMS Emergency Sessions
TS 23.171	REL 3	LCS – Location Services
TS 23.172	REL 5 → 18	SCUDIF – Service Change and UDI Fallback
TS 23.179	REL 13	Functional Architecture and Information Flows to support Mission Critical Communication Services
TS 23.180	REL 17 → 18	MCS support in the IOPS mode of operation
TS 23.195	REL 5	UESBI – User Equipment Specific Behaviour Information
TS 23.198	REL 6 → 9	OSA – Open Service Access


TS 23.202	REL 6 → 18	Circuit Switched Data Bearer Services
TS 23.203	REL 7 → 19	PCC – Policy and Charging Control architecture
TS 23.204	REL 7 → 19	Support of SMS over Generic 3GPP IP Access
TS 23.205	REL 4 → 18	BICC – Bearer-Independent CS Core network
TS 23.206	REL 7	VCC – Voice Call Continuity
TS 23.207	REL 5 → 18	E2E QoS Concept and Architecture
TS 23.214	REL 14 → 18	Architecture enhancements for Control and User Plane Separation of EPC Nodes
TS 23.216	REL 8 → 18	SRVCC – Single Radio Voice Call Continuity
TS 23.218	REL 5 → 18	IP Multimedia Call Model
TS 23.221	REL 4 → 18	Architectural Requirements
TS 23.222	REL 15 → 19	Common API Framework for 3GPP Northbound APIs
TS 23.226	REL 5 → 18	GTT – Global Text Telephony
TS 23.227	REL 4 → 5	Application and User Interaction in the UE
TS 23.228	REL 5 → 19	IMS – IP Multimedia Subsystem
TS 23.231	REL 8 → 18	SIP-I based CS Core Network
TS 23.234	REL 6 → 13	I-WLAN – 3GPP-WLAN Interworking
TS 23.236	REL 5 → 18	Intra-domain Connection of RAN Nodes to Multiple CN Nodes
TS 23.237	REL 8 → 18	IMS Service Continuity
TS 23.240	REL 6 → 18	GUP – Generic User Profile
TS 23.246	REL 6 → 18	MBMS – Architecture and Functional Description
TS 23.247	REL 17 → 18	Architectural enhancements for 5G Multicast-Broadcast
TS 23.251	REL 6 → 18	Network Sharing – Architecture and Functional Description
TS 23.255	REL 17 → 19	AL support for Uncrewed Aerial System (UAS) – Functional architecture and information flows
TS 23.256	REL 17 → 19	Support of Uncrewed Aerial Systems (UAS) connectivity, identification and tracking
TS 23.259	REL 8 → 18	PNM – Personal Network Management
TS 23.261	REL 10 → 18	IP Flow Mobility and Seamless WLAN Offload
TS 23.271	REL 4 → 18	LCS – Location Services
TS 23.272	REL 8 → 19	CS Fallback in EPS
TS 23.273	REL 16 → 19	LCS in the 5G System
TS 23.278	REL 5 → 18	CAMEL Phase 4 IMS Interworking
TS 23.279	REL 7 → 18	CSICS – CS-IMS Combinational Services
TS 23.280	REL 14 → 19	MCS – Mission Critical Services – Common Functional Architecture
TS 23.281	REL 14 → 19	MCVideo – Mission Critical Video – Functional Architecture and Information Flows
TS 23.282	REL 14 → 19	MCData – Mission Critical Data – Functional Architecture and Information Flows
TS 23.283	REL 15 → 19	Mission Critical Communication Interworking with Land Mobile Radio Systems
TS 23.284	REL 10 → 18	LCLS – Local Call Local Switch
TS 23.285	REL 14 → 18	Architecture enhancements for V2X Services
TS 23.286	REL 16 → 18	Application Layer Support for V2X Services – Functional Architecture and Information Flows
TS 23.287	REL 16 → 18	Architecture enhancements for 5G System to support V2X Services
TS 23.288	REL 16 → 19	Architecture enhancements for 5G System to support Network Data Analytics Services
TS 23.289	REL 17 → 19	Mission Critical Services over 5G System
TS 23.292	REL 8 → 18	ICS – IMS Centralized Services


TS 23.303	REL 12 → 18	ProSe – Proximity-based Services
TS 23.304	REL 17 → 19	ProSe in the 5G System
TS 23.316	REL 16 → 18	Wireless and Wireline Convergence Access support for the 5G System
TS 23.327	REL 8 → 13	Mobility between I-WLAN and 3GPP systems
TS 23.333	REL 7 → 18	MRFC-MRFP Mp Interface
TS 23.334	REL 9 → 18	IMS-ALG – IMS-AGW Iq Interface
TS 23.335	REL 9 → 18	UDC – User Data Convergence
TS 23.379	REL 14 → 19	MCPTT – Mission Critical Push To Talk – Functional Architecture and Information Flows
TS 23.380	REL 8 → 18	IMS Restoration Procedures


TS 23.401	REL 8 → 19	GPRS Enhancements for E-UTRAN Access
TS 23.402	REL 8 → 18	Architecture Enhancements for non-3GPP Accesses
TS 23.406	REL 7	TISPAN – IMS Stage 2 Description
TS 23.417	REL 7	TISPAN – IMS Functional Architecture
TS 23.433	REL 18 → 19	Service Enabler Architecture Layer (SEAL) for Verticals – Data Delivery enabler for vertical applications
TS 23.434	REL 16 → 19	Service Enabler Architecture Layer (SEAL) for Verticals – Functional Architecture and Information Flows
TS 23.435	REL 18 → 19	Procedures for Network Slice Capability Exposure for Application Layer Enablement Service
TS 23.436	REL 18 → 19	Functional architecture and information flows for Application Data Analytics Enablement Service
TS 23.468	REL 12 → 18	GCSE_LTE – Group Communication System Enablers for LTE
TS 23.479	REL 16 → 18	UE MBMS APIs for Mission Critical Services


TS 23.501	REL 15 → 19	5G System – System Architecture
TS 23.502	REL 15 → 19	5G System – Procedures
TS 23.503	REL 15 → 19	5G System – PCC Framework
TS 23.506	REL 8	TISPAN – IMS Stage 2 Description
TS 23.507	REL 8	TISPAN – VCC
TS 23.508	REL 7 → 8	TISPAN – Presence Service
TS 23.509	REL 7 → 8	TISPAN – NGN Architecture to support Emergency Communication
TS 23.511	REL 7 → 8	TISPAN – XML Document Management
TS 23.517	REL 8	TISPAN – IMS Functional Architecture
TS 23.521	REL 8	TISPAN – Support of SMS over NGN IMS Subsystem
TS 23.527	REL 15 → 19	5G System – Restoration Procedures
TS 23.540	REL 17 → 19	5G System – Technical realization of Service Based Short Message Service
TS 23.542	REL 18	Application Layer support for Personal IoT Network
TS 23.548	REL 17 → 19	5G System enhancements for Edge Computing
TS 23.554	REL 17 → 19	Application architecture for MSGin5G Service
TS 23.558	REL 17 → 19	Architecture for enabling Edge Applications (EA)
TS 23.586	REL 18	Architectural enhancements to support Ranging based services and Sidelink Positioning


TS 23.611	REL 8	TISPAN – XML Document Management
TS 23.632	REL 16 → 18	User Data Interworking, Coexistence and Migration
TS 23.682	REL 11 → 19	Architecture Enhancements to Facilitate Communications with PDNs and Applications


TR 23.700-01	REL 19	Study on application enablement for Satellite access enabled 5G Services
TR 23.700-03	REL 19	Study on system enhancement for Proximity based Services (ProSe) in 5GS; Phase 3
TR 23.700-05	REL 18	Study on architecture enhancements for Vehicle-mounted Relays
TR 23.700-06	REL 19	Study on architecture enhancements for Vehicle-mounted Relays - Phase 2
TR 23.700-07	REL 17	Study on enhanced support of Non-Public Networks (NPN)
TR 23.700-08	REL 18	Study on enhanced support of Non-Public Networks; Phase 2
TR 23.700-10	REL 17	Study on enhanced IMS to 5GC integration Phase 2; CT WG1 aspects
TR 23.700-11	REL 17	Study on enhanced IMS to 5GC integration Phase 2; CT WG3 aspects
TR 23.700-12	REL 17	Study on enhanced IMS to 5GC integration Phase 2; CT WG4 aspects
TR 23.700-17	REL 18	Study on Wireless and Wireline Convergence for the 5G System (5GS) (5WWC); Phase 2
TR 23.700-18	REL 18	Study on system enabler for Service Function Chaining
TR 23.700-20	REL 17	Study on enhanced support of Industrial Internet of Things (IIoT) in the 5GS
TR 23.700-21	REL 19	Study on Application architecture for enabling Mobile Metaverse applications
TR 23.700-23	REL 19	Study on Application enabler for XR Services
TR 23.700-24	REL 17	Study on support of the 5G MSG (Message) Service
TR 23.700-25	REL 18	Study on Timing Resiliency and TSC and URLLC enhancements
TR 23.700-27	REL 18	Study on support of Satellite backhauling in 5GS
TR 23.700-28	REL 18	Study on integration of Satellite components in the 5G architecture – Phase 2
TR 23.700-29	REL 19	Study on integration of Satellite components in the 5G architecture – Phase 3
TR 23.700-33	REL 18	Study on System enhancement for ProSe in the 5GS – Phase 2
TR 23.700-34	REL 18	Study on SEAL data delivery enabler for Vertical applications
TR 23.700-36	REL 18	Study on Application Data Analytics Enablement Service
TR 23.700-38	REL 18	Study on sharing of administrative configuration between interconnected MC service systems
TR 23.700-40	REL 17	Study on enhancement of Network Slicing; Phase 2
TR 23.700-41	REL 18	Study on enhancement of Network Slicing – Phase 3
TR 23.700-45	REL 19	Study on System aspects of 5G NR Femto
TR 23.700-46	REL 18	Study on 5GS Deterministic Networking (DetNet) interworking
TR 23.700-47	REL 18	Study on architectural enhancements for 5G multicast-broadcast services – Phase 2
TR 23.700-48	REL 18	5G System enhancements for Edge Computing – Phase 2
TR 23.700-49	REL 19	Study on enhancement of support for Edge Computing in 5G Core network; Phase 3
TR 23.700-53	REL 18	Study on Access Traffic Steering, Switching and Splitting support in the 5GS architecture – Phase 3
TR 23.700-55	REL 18	Study on enhanced Application Architecture for UAS applications
TR 23.700-58	REL 18	Study of further architecture enhancements for Uncrewed Aerial Systems and Urban Air Mobility
TR 23.700-59	REL 19	Study on architecture enhancements of UAS, UAV and UAM; Phase 3
TR 23.700-60	REL 18	Study on XR (Extended Reality) and Media services
TR 23.700-61	REL 18	Study on Seamless UE Context Recovery
TR 23.700-62	REL 18	Study on UPF enhancement for Exposure And SBA
TR 23.700-63	REL 19	Study on UPF enhancement for Exposure and SBA – Phase 2
TR 23.700-64	REL 18	Study on enhancements to Application Layer support for V2X services – Phase 2
TR 23.700-66	REL 19	Study on Energy Efficiency and Energy Saving
TR 23.700-68	REL 18	Study on Support of reduced capability NR devices – Phase 2
TR 23.700-70	REL 19	Study on architecture enhancement for Extended Reality and Media service (XRM) – Phase 2
TR 23.700-71	REL 18	Study on enhancement to the 5GC LoCation Services (LCS) – Phase 3
TR 23.700-72	REL 19	Study on enhanced Application Layer support for Location Services
TR 23.700-74	REL 18	Study on generic group management, exposure and communication enhancements
TR 23.700-75	REL 19	Study on Multimedia Priority Service (MPS) for IMS Messaging and SMS services
TR 23.700-76	REL 18	Study on ad hoc Group communication support for Mission Critical Services
TR 23.700-78	REL 18	Study on Application layer support for Personal IoT and Residential Networks
TR 23.700-79	REL 18	Study of Gateway UE function for Mission Critical (MC) Communications
TR 23.700-80	REL 18	Study on 5G system support for AI/ML-based services
TR 23.700-81	REL 18	Study on Enablers for Network Automation for 5G – Phase 3
TR 23.700-82	REL 19	Study on application layer support for AI/ML services
TR 23.700-85	REL 18	Study on enhancement of 5G User Equipment (UE) policy
TR 23.700-86	REL 18	Study on Architecture Enhancement to support Ranging based services and sidelink positioning
TR 23.700-87	REL 18	Study on system architecture enhancement for next generation real time communication
TR 23.700-88	REL 18	Study on architecture enhancements for Personal IoT Network (PIN)
TR 23.700-89	REL 18	Study on 5G AM Policy
TR 23.700-90	REL 18	Study on interconnection and migration aspects for Railways
TR 23.700-91	REL 17	Study on enablers for network automation for the 5GS; Phase 2
TR 23.700-93	REL 17	Study on Access Traffic Steering, Switch and Splitting support in the 5GS architecture; Phase 2
TR 23.700-95	REL 18	Study on Application enablement aspects for subscriber-aware Northbound API access
TR 23.700-96	REL 18	Study on 5G-enabled fused location service capability
TR 23.700-97	REL 18	Study on Application Capability Exposure for IoT Platforms
TR 23.700-98	REL 18	Study on enhanced Application Architecture for enabling Edge Applications
TR 23.700-99	REL 18	Study on Network Slice Capability Exposure for Application Layer Enablement
TR 23.701	REL 12	Study on Web Real Time Communication (WebRTC) Access to IMS
TR 23.702	REL 14	Study on 3GPP PS Data Off
TR 23.703	REL 12	Study on Architecture enhancements to support Proximity Services (ProSe)
TR 23.704	REL 13	Study on CS/PS Coordination in Shared Network
TR 23.705	REL 13	Study on System enhancements for User Plane Congestion Management
TR 23.706	REL 13	Study on enhancements to WebRTC Access to IMS
TR 23.707	REL 13	Architecture enhancements for Dedicated Core Networks
TR 23.708	REL 13	Architecture enhancements for Service Capability Exposure
TR 23.709	REL 13	Study on Optimizations to support High Latency Communications
TR 23.710	REL 14	Study on Improvement of Awareness of User Location
TR 23.711	REL 14	Enhancements of Dedicated Core Networks Selection Mechanism
TR 23.712	REL 13	Study on Warning Status Reporting
TR 23.713	REL 13	Study on Extended Architecture Support for Proximity-based Services
TR 23.714	REL 14	Study on Control and User Plane Separation of EPC Nodes
TR 23.715	REL 16	Study on System enhancements for Provision of Access to Restricted Local Operator Services by an Unauthenticated UE
TR 23.716	REL 16	Study on the Wireless and Wireline Convergence for the 5G System Architecture
TR 23.718	REL 13	Architecture enhancement for Flexible Mobile Service Steering
TR 23.719	REL 14	Feasibility Study on Service Domain Centralization
TR 23.720	REL 13	Study on Architecture enhancements for Cellular Internet of Things
TR 23.721	REL 14	Study on Sponsored Data Connectivity Improvements
TR 23.722	REL 15	Study on Common API Framework for 3GPP Northbound APIs
TR 23.724	REL 16	Study on CIoT support and Evolution for the 5GS
TR 23.725	REL 16	Study on enhancement of URLLC support in the 5GC
TR 23.726	REL 16	Study on enhancing Topology of SMF and UPF in 5G Networks
TR 23.729	REL 15	Study on Unlicensed Spectrum Offloading System enhancements
TR 23.730	REL 14	Study on Extended Architecture support for Cellular Internet of Things
TR 23.731	REL 16	Study on enhancement to the 5GC LoCation Services
TR 23.732	REL 16	Study on User data Interworking, Coexistence and Migration
TR 23.733	REL 15	Study on Architecture enhancements to ProSe UE-to-Network Relay
TR 23.734	REL 16	Study on enhancement of 5GS for Vertical and LAN Services
TR 23.735	REL 16	Study on enhancements of Public Warning System
TR 23.737	REL 17	Study on Architecture aspects for using Satellite Access in 5G
TR 23.740	REL 16	Study on enhancement of Network Slicing
TR 23.741	REL 13	Study on enhancements to MBMS for LTE
TR 23.742	REL 16	Study on enhancements to the Service-Based Architecture
TR 23.743	REL 16	Study on Optimisations on UE radio capability signalling
TR 23.744	REL 17	Study on Location enhancements for Mission Critical Services
TR 23.745	REL 17	Study on application layer support for Factories of the Future in 5G network
TR 23.746	REL 14	Study on System Architecture enhancements to eMBMS for Television Video Service
TR 23.748	REL 17	Study on enhancement of support for Edge Computing in 5GC
TR 23.749	REL 14	Study on S8 Home Routing Architecture for VoLTE
TR 23.750	REL 14	Study for Robust Call Setup for VoLTE Subscriber in LTE
TR 23.751	REL 15	Study on support of Voice over WLAN
TR 23.752	REL 17	Study on system enhancement for Proximity based Services (ProSe) in the 5GS
TR 23.754	REL 17	Study on supporting Unmanned Aerial Systems (UAS) connectivity, Identification and tracking
TR 23.755	REL 17	Study on application layer support for Unmanned Aerial Systems (UAS)
TR 23.756	REL 16	Study for Single Radio Voice Continuity from 5G to 3G
TR 23.757	REL 17	Study on architectural enhancements for 5G Multicast-Broadcast services
TR 23.758	REL 17	Study on Application Architecture for enabling Edge Applications
TR 23.759	REL 15	Study for enhanced VoLTE Performance
TR 23.761	REL 17	Study on System Enablers for Devices having multiple USIM
TR 23.764	REL 17	Study on enhancements to Application layer support for V2X services
TR 23.768	REL 12	Study on Architecture enhancements to Support Group Communication System Enablers for LTE
TR 23.769	REL 13	Group based enhancements
TR 23.770	REL 13	Study on System impacts of extended Discontinuous Reception (DRX) Cycle for Power Consumption Optimization
TR 23.771	REL 13	Study on System impacts of IMS Emergency Sessions over WLAN
TR 23.773	REL 14	Study on extension in the Group based enhancements in the Network Capability Exposure functions
TR 23.774	REL 17	Study on Mission Critical Services over 5G Multicast Broadcast System
TR 23.776	REL 17	Study on architecture enhancements for 3GPP support of advanced Vehicle-to-Everything (V2X) services; Phase 2
TR 23.778	REL 16	Study on Mission Critical Services Access aspects
TR 23.779	REL 13	Study on Application Architecture to support MCPTT Services
TR 23.780	REL 14	Study on MBMS usage for Mission Critical Communication Services
TR 23.781	REL 15	Study on Migration and Interconnection for Mission Critical Services
TR 23.782	REL 15	Study on Mission Critical Communication Interworking between LTE and non-LTE systems
TR 23.783	REL 18	Study on Mission Critical services support over the 5G System
TR 23.784	REL 16	Study on Discreet Listening and Logging for Mission Critical Services
TR 23.785	REL 14	Study on Architecture enhancements for LTE support of V2X Services
TR 23.786	REL 16	Study on Architecture enhancements for EPS and 5G System to support advanced V2X Services
TR 23.789	REL 13	Monitoring enhancements
TR 23.790	REL 15	Study on Application Architecture for the Future Railway Mobile Communication System (FRMCS)
TR 23.791	REL 16	Study of Enablers for Network Automation for 5G
TR 23.792	REL 16	Study on MBMS APIs for Mission Critical Services
TR 23.793	REL 16	Study on Access Traffic Steering, Switch and Splitting support in the 5G System Architecture
TR 23.794	REL 17	Study on Enhanced IMS to 5GC Integration
TR 23.795	REL 16	Study on Application Layer support for V2X Services
TR 23.796	REL 16	Study on Application Architecture for the FRMCS Phase 2
TR 23.797	REL 13	Study on Architecture enhancements to support Isolated E-UTRAN Operation for Public Safety
TR 23.798	REL 15	Study on enhancements to Isolated E-UTRAN Operation for Public Safety
TR 23.799	REL 14	Study on Architecture for Next Generation System


TR 23.800	REL 12	Study on Application Based Charging (ABC)
TR 23.802	REL 7	Architectural enhancements for end-to-end QoS
TR 23.804	REL 7	Support of SMS and MMS over Generic 3GPP IP Access
TR 23.806	REL 7	Voice Call Continuity between CS and IMS Study
TR 23.810	REL 8	Study on Architecture impacts of Service Brokering
TR 23.811	REL 8	Service Level Interworking for Messaging Services
TR 23.812	REL 11	Feasibility Study on IMS evolution
TR 23.813	REL 11	Study on Policy Solutions and Enhancements
TR 23.814	REL 3	Separating RR and MM Specific Parts of the MS Classmark
TR 23.815	REL 5	Charging Implications of IMS Architecture
TR 23.816	REL 7	Identification of Communication Services in IMS
TR 23.820	REL 8 → 9	Study of IMS Restoration Procedures
TR 23.824	REL 10	IP-SM-GW enhancements for Interworking with OMA Converged IP Messaging
TR 23.826	REL 9	Feasibility Study on VCC support for Emergency Calls
TR 23.828	REL 8	ETWS Requirements and Solutions
TR 23.829	REL 10	Local IP Access and Selected IP Traffic Offload (LIPA-SIPTO)
TR 23.830	REL 9	Architecture aspects of HNB/HeNB
TR 23.831	REL 10	IMS Service Continuity – Inter-UE Transfer enhancements
TR 23.832	REL 10	IMS aspects of Architecture for HNB
TR 23.834	REL 10	Study on GTP-based S2b
TR 23.838	REL 9	IMS Service Continuity enhancements – Service, Policy and Interaction
TR 23.839	REL 12	Study on support of Broadband Forum (BBF) Access Interworking
TR 23.840	REL 7	Study into Routeing of MT-SMs via the HPLMN
TR 23.841	REL 6	Presence Service Architecture
TR 23.842	REL 11	Study on Network provided Location Information to the IMS
TR 23.843	REL 12	Study on Core Network Overload (CNO) Solutions
TR 23.844	REL 12	Feasibility Study on IMS Based Peer-to-Peer Content Distribution Services
TR 23.845	REL 10	Study on User Data Convergence (UDC) Evolution
TR 23.846	REL 6	Multimedia Broadcast/Multicast Service (MBMS)
TR 23.847	REL 8	Enhancements to IMS Service Functionalities Facilitating Multicast Bearer Services
TR 23.849	REL 11	Study on Stage 2 aspects of OSCAR in the IMS whilst Roaming
TR 23.850	REL 11	Study on Roaming Architecture for Voice over IMS with Local Breakout
TR 23.851	REL 6	Network Sharing – Architecture and Functional Description
TR 23.852	REL 12	Study on S2a Mobility based on GTP and WLAN Access to the EPC network (SaMOG)
TR 23.853	REL 12	Operator Policies for IP Interface Selection (OPIIS)
TR 23.854	REL 11	Enhancements for Multimedia Priority Service (MPS)
TR 23.855	REL 11	Data Identification in Access Network Discovery and Selection Function (ANDSF) (DIDA)
TR 23.856	REL 10	Single Radio Voice Call Continuity (SRVCC) Enhancements
TR 23.857	REL 11	Study of EPC Nodes Restoration
TR 23.858	REL 13	Usage Monitoring Control PCC Enhancement
TR 23.859	REL 12	LIPA Mobility and SIPTO at the Local Network
TR 23.860	REL 10	Enabling Coder Selection and Rate Adaptation for UTRAN and E-UTRAN for Load Adaptive Applications
TR 23.861	REL 13	Network based IP Flow Mobility
TR 23.862	REL 12	EPC enhancements to support Interworking with Data Application Providers
TR 23.863	REL 12	Support of SMS in IMS without MSISDN
TR 23.865	REL 12	WLAN Network Selection for 3GPP Terminals
TR 23.866	REL 12	System improvements for Energy Efficiency
TR 23.867	REL 7	IP-based IMS Emergency Sessions
TR 23.868	REL 9	Feasibility Study on Extension of Support for IMS Emergency Calls
TR 23.869	REL 9	Support for IP based IMS Emergency Calls over GPRS and EPS
TR 23.870	REL 9	Single Radio Voice Call Continuity (SR-VCC) support for IMS Emergency Calls
TR 23.871	REL 5	Enhanced support for User Privacy in Location Services (LCS)
TR 23.872	REL 8	Study on Architecture of IMS based Customized Alerting Tone (CAT)
TR 23.873	REL 4	Feasibility Study for Transport and Control Separation in the PS CN Domain
TR 23.875	REL 5	Support of Push Service
TR 23.877	REL 6	Architectural aspects of Speech-enabled Services
TR 23.879	REL 9	Study on CS Domain Services over Evolved PS Access
TR 23.882	REL 8	3GPP SAE: Report on Technical Options and Conclusions
TR 23.883	REL 9	Study on enhancements to IMS Centralized Services (ICS)
TR 23.885	REL 11	Feasibility Study of SRVCC from UTRAN/GERAN to E-UTRAN/HSPA
TR 23.886	REL 10	Feasibility Study of Single Radio Video Call Continuity (vSRVCC)
TR 23.887	REL 12	Study on MTC and other Mobile Data Applications Communications enhancements
TR 23.888	REL 11	System improvements for Machine-Type Communications (MTC)
TR 23.889	REL 10	Local Call Local Switch (LCLS) System impacts – Feasibility study
TR 23.890	REL 12	Optimized Offloading to WLAN in 3GPP RAT Mobility
TR 23.891	REL 9	Evaluation of LCS Control Plane Solutions for EPS
TR 23.892	REL 8	IMS Centralized Services
TR 23.893	REL 8	Feasibility Study on Multimedia Session Continuity
TR 23.894	REL 10	System enhancements for the use of IMS Services in Local Breakout and Optimal Routeing of Media
TR 23.895	REL 6	Provision of UE Specific Behaviour Information to Network Entities
TR 23.896	REL 12	Support for Fixed Broadband Access Networks Convergence
TR 23.897	REL 12	Feasibility Study on IMS Business Trunking for IP-PBX in Static Mode of Operation
TR 23.898	REL 7	Access Class Barring and Overload Protection (ACBOP)


TR 23.903	REL 6 → 18	Redial Solution for Voice-Video Switching
TR 23.908	REL 3 → 4	Pre-Paging
TR 23.909	REL 3 → 4	Gateway Location Register
TR 23.910	REL 3 → 5	Circuit Switched Data Bearer Services
TR 23.911	REL 3 → 4	Out-of-Band Transcoder Control
TR 23.912	REL 3 → 4	Super-Charger
TR 23.919	REL 7 → 18	Direct Tunnel Deployment Guideline
TR 23.923	REL 3	Combined GSM and Mobile IP Mobility Handling in UMTS IP CN
TR 23.924	REL 10 → 18	Feasibility Study on Non-Access Stratum (NAS) Node Selection Function above BSC/RNC
TR 23.930	REL 3 → 4	Iu Principles
TR 23.941	REL 6	GUP – Data Description Method (DDM)
TR 23.958	REL 18	Edge Application Standards in 3GPP and Alignment with External Organizations
TR 23.972	REL 3	CS Multimedia Telephony
TR 23.973	REL 16 → 18	User Data Interworking, Coexistence and Migration
TR 23.975	REL 11 → 18	IPv6 Migration Guidelines
TR 23.976	REL 6 → 18	Push Architecture
TR 23.977	REL 6 → 18	Bandwidth And Resource Savings (BARS) and Speech enhancements for CS Networks
TR 23.979	REL 6 → 18	PoC Services
TR 23.981	REL 5 → 18	Interworking Aspects and Migration Scenarios for IPv4 based IMS Implementations