Canonical Atlas record
Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3
EPS NAS
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Release evolution
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Release ledger
Rel-17 snapshot
715 indexed Change Requests · 11 connected Work Items.
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Version history
Showing 60 of 165 indexed versions.
Atlas classifications
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Work Items
Rel-4 Evolutions of the transport in the UTRAN
Provisioning of IP-based multimedia services
Voice Call Continuity between CS and IMS (incl. I-WLAN)
eCall Data Transfer
Support of Closed Subscriber Group (CSG)
Study on 3GPP System Architecture Evolution
UTRA HNB
Home NodeB / eNodeB
CSG and Idle Mode Mobility for 3G Home NodeB
CSG and Idle Mode Mobility for LTE Home eNodeB
Rel-8 LTE 3G Long Term Evolution - Evolved Packet System RAN part
Stage 3 for PPACR (CT1)
Stage 2/3 for Network selection procedures
3GPP System Architecture Evolution Specification - Evolved Packet System (non RAN aspects)
Deleted - Issues for CT4 TR 29.803
Issues for CT3 TR 29.804
Issues for CT1 TR 24.801
Core specification for CT6 aspects of SAE
CT6 aspects of SAE
Stage 3 SAE impact on existing capabilities
Stage 3 (CT4) of SAE impact on existing capabilities
Stage 3 for SAE / LTE identities
Stage 2 Security Architecture
Stage 3 (CT1) for SAE impact on services, network functions and capabilities
CT1 part of Stage 3 for CS Fallback in EPS
CS Fallback in EPS
System enhancements for the use of IMS services in local breakout
Stage 3 for QoS mechanisms
CT4 Stage 3 for protocol between EPCs
Stage 3 for UE Non-Access-Stratum (NAS) mobility procedures in idle and active mode
Stage 3 for Session management, bearer control and QoS aspects
Stage 3 for security aspects of LTE Access
Stage 3 for EPC - HSS interface
Stage 2 GPRS for EPC (23.060, etc.)
Stage 3 for MME - SGSN signalling free protocol
Stage 3 for Inter-system mobility between E-UTRAN and CDMA2000
Stage 3 for EPC to 3GPP2
Stage 3 for EPC to UTRAN
Stage 3 for EPC - GPRS
Stage 3 for Inter-system mobility between E-UTRAN and 2G/3G
CT4 Stage 3 for GTP v2 protocol
CT4 Stage 3 for PMIP protocol within EPC
Mobile IPv4 (MIPv4) based Mobility protocols
(IETF) Stage 3 for Mobility management based on DSMIPv6 (RFC6275)
Stage 3 for Mobility management based on MIP v4
Stage 3 for Inter-system mobility between E-UTRAN and non 3GPP accesses
Stage 2 Security aspects for non-3GPP Access
Stage 3 security aspects for DSMIPv6 Access
Stage 3 security aspects for MIPv4 Access
Stage 3 for Access to the EPC via non-3GPP access networks
Stage 3 for interfaces within EPC
Stage 3 for Interfaces EPC - non-3GPP IP access
(IETF) Stage 3 for Interfaces EPC - non-3GPP IP access
Stage 3 for EPC - AAA interface
Stage 3 for AAA/HSS related
Stage 3 for Mobility management based on DSMIPv6
(IETF) Stage 3 for Mobility management based on DSMIPv6 (draft-ietf-mip6-hiopt)
Stage 3 for SRVCC in EPS
Single Radio Voice Call Continuity for 3GPP (SRVCC)
(Small) Technical Enhancements and Improvements for Rel-8
Architecture aspects of EHNB
Enhanced Home NodeB / eNodeB
Stage 1 for EHNB
CT1 aspects - Support of Home NB and Home eNB enhancements
Support for IMS Emergency Calls over GPRS and EPS
CT1 aspects of SRVCC support for IMS Emergency Calls
CT1 aspects - Stage 3 for IMS Emergency Calls over GPRS and EPS
LCS Control Plane Solution for EPS
CT1 aspects of Control Plane LCS in the EPC
CT4 aspects of Control Plane LCS in the EPC
Stage 2 for LCS Control Plane Solution for EPS
Service Specific Access Control in EPS
(Small) Technical Enhancements and Improvements for Rel-9
CT1 part of Stage 3 for IP Flow Mobility and seamless WLAN offload
CT1 part of Stage 3 for Local IP Access
Relays for LTE
LTE Relay Nodes Security
Security for LTE Relay Nodes (Stage 2)
Network Improvements for Machine-Type Communications
CT1 part of Stage 3 for Network Improvements for Machine-Type Communications
CT1 part of Stage 3 for SIPTO for macro networks
Stage 2/3 for SIPTO for macro networks
Stage 2 for SIPTO for macro networks
(Small) Technical Enhancements and Improvements for Rel-10
CT1 part on Stage 3 on enhancements for Multimedia Priority Service
SAE Protocol Development - Phase 2
SAE Protocol Development (Stage 3) - Phase 2
CS Fallback in EPS - Phase 2
Deleted - CT1 part of Stage 3 CN-based requirements and Power Considerations of SIMTC
CT1 part of Stage 3 CS aspects for SIMTC
CT1 part of Stage 2/3 for SMS in MME architecture option and related PS-only service subscription
CT1 part of Stage 3 Extended Access Barring for UTRAN and E-UTRAN
CT1 part of Stage 3 BB1: Reachability Aspects of SIMTC
Deleted - CT1 part of Stage 3 Signalling Optimizations of SIMTC
(Small) Technical Enhancements and Improvements for Rel-11
CT1 part for Single Radio Voice Call Continuity from UTRAN/GERAN to E-UTRAN/HSPA
Single Radio Video Call Continuity for 3G-CS
CN aspects of Single Radio Video Call Continuity for 3G-CS
CT1 aspects of Single Radio Video Call Continuity for 3G-CS
CT1 part of Group Communication System Enablers for LTE
LIPA Mobility and SIPTO at the Local Network
Deleted - CT1 part of CN aspects of LIPA Mobility
BB1: SIPTO at the Local Network
CT1 part of Stage 3 CN aspects of SIPTO at the Local Network
TR on Security aspects of Machine-Type Communications
Stage 3 for BB3: UE Power Consumptions Optimizations (UEPCOP)
CT1 part of Stage 3 for BB3: UE Power Consumptions Optimizations (UEPCOP)
Proximity-based Services
CT1 part of CT aspects of Proximity-based Services
SAE Protocol Development - Phase 3
CS Fallback in EPS - Phase 3
SAE Protocol Development (Stage 3) - Phase 3
SAE for support for non-3GPP accesses - Phase 3
CT aspects of Smart Congestion Mitigation in E-UTRAN (Stage 3)
Signalling Improvements for Network Efficiency (Stage 3)
(Small) Technical Enhancements and Improvements for Rel-12
CT1 part of CT aspects of WLAN/3GPP Radio Interworking (Stage 3)
CT aspects of CIoT
Awaiting formal work item
Core part: Further LTE Physical Layer Enhancements for MTC
Retry restriction for Improving System Efficiency
CS Fallback in EPS - Phase 4
SAE for support for non-3GPP accesses - Phase 4
(Small) Technical Enhancements and Improvements for Rel-13
Core part: Voice and Video Enhancement for LTE
SAES5 CS Fallback in EPS
(Small) Technical Enhancements and Improvements for Rel-14
5G System - Phase 1
Historical association · verification pendingCT aspects of 5G System - Phase 1
SAES6 CS Fallback in EPS
Cellular IoT support and evolution for the 5G System
Historical association · verification pendingWireless and Wireline Convergence for the 5G system architecture
Historical association · verification pendingAccess Traffic Steering, Switch and Splitting support in the 5G system architecture
Historical association · verification pendingEnhancements to Framework for Live Uplink Streaming
Architecture enhancements for the support of Integrated access and backhaul (IAB)
Optimisations on UE radio capability signalling
Stage-3 SAE Protocol Development for Rel16 for CS Fallback in EPS
Signalling Improvements for Network Efficiency in 5GS
(Small) Technical Enhancements and Improvements for Rel-16
Historical association · verification pendingArchitecture enhancements for 3GPP support of advanced V2X services
Historical association · verification pendingStage-3 5GS NAS protocol development 17
Historical association · verification pendingAccess Traffic Steering, Switch and Splitting support in the 5G system architecture; Phase 2
Remote Identification of Uncrewed Aerial Systems
Support of Enhanced Industrial IIoT
Architecture support for NB-IoT/eMTC Non-Terrestrial Networks in EPS
Multimedia Priority Service (MPS) Phase 2
Support for Multi-USIM Devices
Historical association · verification pendingMulti-device enhancements for device transfers
(Small) Technical Enhancements and Improvements for Rel-17
Enhancement of support for Edge Computing in 5G Core network
Historical association · verification pendingEnhancement of Network Slicing Phase 2
Historical association · verification pendingStage-3 5GS NAS protocol development 18
Satellite access Phase 2
Stage-3 SAE Protocol Development
Signal level Enhanced Network Selection
Seamless UE context recovery
(Small) Technical Enhancements and Improvements for Rel-18
Secondary DN Authentication and authorization in EPC IWK cases
Stage 2 of Secondary DN Authentication and authorization in EPC IWK cases
Further Architecture Enhancement for UAV and UAM
Enhancement of 5G UE Policy
Stage-3 5GS NAS protocol development 18
Integration of satellite components in the 5G architecture Phase 3
CT aspects of integration of satellite components in the 5G architecture Phase 3
Enhancement of controlling RAT utilization
CT aspects of Lower Selection-priority for PLMN Selection
Minimization of Service Interruption During Core Network Failure Phase 2
MPS for Messaging services
Stage 3 of NORDAT_CP
Stage-3 SAE Protocol Development
(Small) Technical Enhancements and Improvements for Rel-19
Uncrewed Aerial System Phase 3
Stage-3 5GS NAS protocol development 20
CT aspects for integration of satellite components in the 5G Phase 4
Stage-3 SAE Protocol Development
(Small) Technical Enhancements and Improvements for Rel-20
CT aspects of NSSAA in EPS
CT aspects of NSSRG in EPS
General Packet Radio Service
Location Services
Lawful Interception for GSM Features transposed to UMTS
OAM Principles and High-level Requirements
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