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Found 92 specifications
⭐ Most Popular Specifications
Base Station (BS) radio transmission and reception
BS RF requirements, frequency bands, channel bandwidth, power limits
Physical channels and modulation
OFDM numerology, frame structure, resource grid, physical channels (PDSCH, PUSCH, PDCCH, PUCCH), reference signals, modulation
Multiplexing and channel coding
Transport channels, control information, LDPC coding, Polar coding, CRC, rate matching, code block segmentation
Physical layer procedures for control
DCI formats, PDCCH monitoring, power control, CSI reporting, HARQ, scheduling, timing advance
Physical layer procedures for data
Link adaptation, power control for data, CSI acquisition, beam management, rate matching
NR and NG-RAN Overall Description
NR architecture, protocol stack, RAN functions, dual connectivity, carrier aggregation
User Equipment (UE) radio access capabilities
UE capability parameters, categories, feature sets, band combinations
MAC protocol specification
MAC layer functions, scheduling, HARQ, BSR, PHR, random access
PDCP protocol specification
PDCP layer, header compression, security, duplication, reordering
RRC protocol specification
RRC states, messages, IEs, mobility, measurement configuration, connection management
NG-RAN; F1 Application Protocol (F1AP)
F1AP messages and procedures for CU-DU communication
NG-RAN; F1 general aspects and principles
F1 interface between gNB-CU and gNB-DU, functional split
System architecture for the 5G System
5GC architecture, AMF, SMF, UPF, network functions, service-based architecture
Procedures for the 5G System
Registration, session management, mobility, QoS, policy control procedures
Non-Access-Stratum (NAS) protocol for 5G
5G NAS messages, registration, session management, mobility management
Interface between the Control Plane and the User Plane nodes
PFCP protocol between SMF and UPF (N4 interface)
5G System; Technical Realization of Service Based Architecture; Stage 3
SBA framework, HTTP/2, service-based interfaces
5G System; Access and Mobility Management Services; Stage 3
AMF services, mobility management, access management
Non-Access-Stratum (NAS) protocol for EPS
LTE NAS messages, EMM, ESM
UE radio transmission and reception
LTE UE RF requirements, frequency bands, transmit power
Physical channels and modulation (LTE)
LTE OFDM/SC-FDMA, frame structure, resource grid, physical channels
Physical layer procedures (LTE)
LTE power control, HARQ, CSI, scheduling procedures
E-UTRA and E-UTRAN; Overall description
LTE architecture overview, protocol stack, RAN functions
MAC protocol (LTE)
LTE MAC layer, scheduling, random access, BSR, PHR
RRC protocol (LTE)
LTE RRC states, messages, mobility, measurements
GPRS enhancements for E-UTRAN access
EPC architecture, MME, SGW, PGW, S1 interface
Service requirements for the 5G system
5G use cases, service requirements, KPIs, eMBB, URLLC, mMTC
3GPP SAE; Security architecture
LTE/EPC security architecture, EPS-AKA, key hierarchy
Security architecture and procedures for 5G System
5G security architecture, 5G-AKA, SUPI concealment, security procedures
📚 All Specifications
Base Station (BS) radio transmission and reception
BS RF requirements, frequency bands, channel bandwidth, power limits
User Equipment (UE) radio transmission and reception; Part 1: Range 1 Standalone
NR FR1 (sub-6 GHz) UE RF requirements, frequency bands, transmit power, sensitivity
User Equipment (UE) radio transmission and reception; Part 2: Range 2 Standalone
NR FR2 (mmWave) UE RF requirements, frequency bands, transmit power, sensitivity
NR; Requirements for support of radio resource management
NR RRM requirements including measurements, timing, idle/connected mode procedures
NR; Services provided by the physical layer
Physical layer services to MAC, transport channels, control procedures
Physical channels and modulation
OFDM numerology, frame structure, resource grid, physical channels (PDSCH, PUSCH, PDCCH, PUCCH), reference signals, modulation
Multiplexing and channel coding
Transport channels, control information, LDPC coding, Polar coding, CRC, rate matching, code block segmentation
Physical layer procedures for control
DCI formats, PDCCH monitoring, power control, CSI reporting, HARQ, scheduling, timing advance
Physical layer procedures for data
Link adaptation, power control for data, CSI acquisition, beam management, rate matching
Physical layer measurements
RSRP, RSRQ, SINR, SSB measurements, CSI-RS measurements
NR and NG-RAN Overall Description
NR architecture, protocol stack, RAN functions, dual connectivity, carrier aggregation
NR; UE procedures in idle mode and RRC inactive state
Cell selection, reselection, PLMN selection, idle mode procedures
User Equipment (UE) radio access capabilities
UE capability parameters, categories, feature sets, band combinations
MAC protocol specification
MAC layer functions, scheduling, HARQ, BSR, PHR, random access
RLC protocol specification
RLC TM, UM, AM modes, segmentation, reassembly, ARQ
PDCP protocol specification
PDCP layer, header compression, security, duplication, reordering
RRC protocol specification
RRC states, messages, IEs, mobility, measurement configuration, connection management
NG-RAN Architecture description
gNB architecture, CU-DU split, F1 interface, Xn interface
NG-RAN; NG general aspects and principles
NG interface architecture, protocol structure between RAN and 5GC
NG-RAN; NG Application Protocol (NGAP)
N2 interface between NG-RAN and 5GC (AMF), NGAP messages
NG-RAN; NG data transport
NG user plane data transport, GTP-U over NG-U interface between gNB and UPF
NG-RAN; Xn Application Protocol (XnAP)
XnAP messages and procedures for inter-gNB communication
NG-RAN; E1 general aspects and principles
E1 interface between gNB-CU-CP and gNB-CU-UP, control/user plane separation
NG-RAN; F1 Application Protocol (F1AP)
F1AP messages and procedures for CU-DU communication
NG-RAN; F1 data transport
F1 user plane data transport between gNB-CU and gNB-DU
NR; Physical layer for relaying
IAB (Integrated Access and Backhaul) physical layer procedures
Requirements on User Equipments (UEs)
UE requirements for testing and conformance
NG-RAN; Xn general aspects and principles
Xn interface between gNBs for inter-gNB mobility and coordination
NG-RAN; NR user plane protocol
User plane protocol over NG-U, GTP-U tunneling
NG-RAN; NR Positioning Protocol A (NRPPa)
Positioning procedures and signaling between gNB and LMF
NG-RAN; F1 general aspects and principles
F1 interface between gNB-CU and gNB-DU, functional split
UE conformance specification; Part 1: Range 1 Standalone
FR1 UE RF conformance test specifications
UE conformance specification; Part 2: Range 2 Standalone
FR2 (mmWave) UE RF conformance test specifications
Numbering, addressing and identification
IMSI, SUPI, GUTI, TMSI, PLMN identifiers, numbering plans for 3GPP systems
Technical realization of the Short Message Service (SMS)
SMS in 5G, message formats, delivery procedures
GPRS enhancements for E-UTRAN access
General Packet Radio Service service description, GPRS architecture and tunnelling
NAS functions related to Mobile Station in idle mode
NAS procedures in idle mode, PLMN selection, location updates
IP Multimedia Subsystem (IMS) emergency sessions
Emergency call handling in IMS and 5G
IP Multimedia Subsystem (IMS); Stage 2
IMS architecture, SIP signaling, VoNR/VoLTE
5G System (5GS) Location Services (LCS); Stage 2
Positioning and location services in 5G
Architecture enhancements for 5G System to support network data analytics services
NWDAF, network analytics, ML/AI in 5G core
System architecture for the 5G System
5GC architecture, AMF, SMF, UPF, network functions, service-based architecture
Procedures for the 5G System
Registration, session management, mobility, QoS, policy control procedures
Policy and charging control framework
Policy control framework, PCF, charging control, QoS policies
Wireless and wireline convergence access support for the 5G System
5G-RG, W-AGF, wireline access to 5GC
Mobile radio interface Layer 3 specification; Core network protocols
Legacy Layer 3 NAS protocols for circuit-switched and packet-switched services
Non-Access-Stratum (NAS) protocol for 5G
5G NAS messages, registration, session management, mobility management
GPRS Tunnelling Protocol (GTPv1)
GTPv1 control and user plane protocol for GPRS and UMTS core network
Interface between the Control Plane and the User Plane nodes
PFCP protocol between SMF and UPF (N4 interface)
3GPP Evolved Packet System (EPS); GTPv2-C
GTPv2 control plane protocol for EPC core network signaling
GPRS Tunnelling Protocol User Plane (GTPv1-U)
GTP user plane protocol for tunnelling user data in GPRS/EPC/5GC
5G System; Technical Realization of Service Based Architecture; Stage 3
SBA framework, HTTP/2, service-based interfaces
5G System; Session Management Services; Stage 3
SMF services, session management, PDU sessions
5G System; Unified Data Management Services; Stage 3
UDM services, subscription data, authentication
5G System; Unified Data Repository Services; Stage 3
UDR services, data repository, storage
5G NRF Services
NRF services, NF registration, discovery, service mesh
5G Session Management Policy Control
Session management policy control service, PCF-SMF interaction for QoS and charging policies
5G System; Access and Mobility Management Services; Stage 3
AMF services, mobility management, access management
5G System; Common Data Types
Common data structures, encoding, JSON schemas for SBI
5G data connectivity domain charging
Charging architecture and data connectivity charging for 5G system PDU sessions
5G System; Charging service
Charging service for 5GC, converged charging, Nchf service operations
Non-Access-Stratum (NAS) protocol for EPS
LTE NAS messages, EMM, ESM
UE radio transmission and reception
LTE UE RF requirements, frequency bands, transmit power
Base Station (BS) radio transmission and reception
LTE eNB RF requirements, transmit power, spurious emissions
E-UTRA; Requirements for support of radio resource management
LTE RRM requirements, measurements, idle/connected mode
Physical channels and modulation (LTE)
LTE OFDM/SC-FDMA, frame structure, resource grid, physical channels
E-UTRA; Multiplexing and channel coding
LTE transport channel and control channel coding, turbo codes, rate matching
Physical layer procedures (LTE)
LTE power control, HARQ, CSI, scheduling procedures
E-UTRA; Physical layer measurements
LTE physical layer measurements, RSRP, RSRQ, RSSI
E-UTRA and E-UTRAN; Overall description
LTE architecture overview, protocol stack, RAN functions
E-UTRA; Services provided by the physical layer
LTE physical layer service description, transport channels, physical channels mapping
E-UTRA; UE procedures in idle mode
LTE idle mode procedures, cell selection, reselection
E-UTRA; UE radio access capabilities
LTE UE capability categories, feature groups, band combinations
MAC protocol (LTE)
LTE MAC layer, scheduling, random access, BSR, PHR
E-UTRA; RLC protocol specification
LTE RLC layer, TM/UM/AM modes, segmentation, ARQ
E-UTRA; PDCP specification
LTE PDCP layer, header compression, ciphering, integrity
RRC protocol (LTE)
LTE RRC states, messages, mobility, measurements
E-UTRAN; S1 general aspects and principles
S1 interface architecture and protocol structure between eNB and EPC
S1 Application Protocol (S1AP)
S1 interface between eNB and EPC
E-UTRAN; X2 general aspects and principles
X2 interface architecture between eNBs for handover and load management
E-UTRAN; X2 Application Protocol
X2 interface between eNBs, handover, load balancing
GPRS enhancements for E-UTRAN access
EPC architecture, MME, SGW, PGW, S1 interface
Architecture enhancements for non-3GPP accesses
WiFi offload, non-3GPP access to EPC, S2a/S2b interfaces
Service accessibility
Emergency calls, roaming, service availability requirements
Service aspects; Service principles
General service requirements, QoS principles, mobility
Enhancement of 3GPP support for V2X scenarios; Stage 1
V2X use cases, requirements, C-V2X services
Service requirements for the 5G system
5G use cases, service requirements, KPIs, eMBB, URLLC, mMTC
Multi-Standard Radio (MSR) Base Station
Multi-RAT base station requirements
3G security; Security architecture
UMTS/3G security architecture, authentication, encryption
Network Domain Security (NDS); IP network layer security
IPsec, network domain security, inter-operator security
3GPP SAE; Security architecture
LTE/EPC security architecture, EPS-AKA, key hierarchy
Security architecture and procedures for 5G System
5G security architecture, 5G-AKA, SUPI concealment, security procedures
💡 Tips for Using 3GPP Documents
1. Start with Overview Specs
Begin with .300 series (e.g., 38.300, 23.501) to understand architecture before diving into details.
2. Use Ctrl+F
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3. Check Dependencies
Specs often reference other specs. Keep related docs open in multiple tabs.
4. Focus on Tables
Parameter tables and procedure flows are the most useful sections for implementation.
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