LTE - SAE Protocols and Procedures
- Duration: 3 days or 18 hours
- Level: Level 4
LTE - SAE Protocols and Procedures
Course Outline
Divided into 11 sections, the topics covered will include:
Section 1: SAE Operation (1 hour)
- Requirements and Market Drivers for the EPC / SAE.
- Defining SAE - 3GPP Standards Process, Primary LTE Specifications.
- Positioning of the EPC / SAE within the Overall LTE Architecture.
- LTE Principles of Operation - Registration, Session Establishment, Mobility, Interoperability, Security, QoS.
Section 2: SAE Functional Architecture (1.5 hours)
- EPC Functional Architecture.
- MME Key Functionality - NAS Signalling, Bearer Management, Gateway Selection, Interworking, Roaming, etc.
- S-GW Functionality - Mobility, Data Handling, Lawful Intercept, QoS Enforcement, etc.
- PDN-GW Functionality - PCC Interaction, Packet Filtering and Screening, Accounting, IP Address Allocation, QoS, etc.
- Policy and Charging Control Architecture - PCRF, PCEF, SPR, AF.
- HSS Functionality - Mobility Management, Security, Services Support, etc.
- EPC Interfaces and Protocols - S1-13, GTP, PMIP, S1AP, X2AP.
- IMS Based Service Control.
Section 3: SAE IP Transport Network Architecture (1 hour)
- Carrier Grade IP Transport within the EPC - Key Technologies, IP Overview, Layer 3 Routing, End to End Datagram Delivery for SAE.
- Benefits and Operation of MPLS - Architecture, Control Plane, Data Forwarding Plane, Label Composition and Distribution.
- MPLS Selling Points - Traffic Engineering, Protection and Restoration with FRR, VPN connectivity.
- Carrier Ethernet and CET.
Section 4: Registration Procedures (1.5 hours)
- LTE Stratums - NAS Control Plane, NAS User Plane, EMM and ESM Messages.
- EPS and EMM States - EMM-DEREGISTERED, EMM-REGISTERED, ECM-IDLE, ECM-CONNECTED.
- LTE Identities - IMSI, IMEI, GUTI, M-TMSI, S-TMSI, IP Address, C-RNTI, MMEI, GUMMEI, S-GW ID, PDN-GW ID.
- Detailed Registration Process - Key Stages including Attach Request, Identification Request, Update Location, Create Session, Initial Context Setup, etc.
- Deregistration Procedures.
Section 5: Security in the EPC / SAE (1 hour)
- EPS Authentication and Key Agreement - Key information carried in Attach and Authentication Procedures.
- EPS Encryption and Integrity Algorithms - 128-EEA1, 128 - EEA2, 128-EIA2 etc.
- Key Distribution and Hierarchy in the EPS.
- Security Context Initiation Procedures.
- IPSec in the EPS - AH, ESP, SPD, SAD, Security Associations, Modes of Operation.
- SA Establishment using IKEv2.
Section 6: SAE QoS, Policy and Charging (2 hours)
- Reliable Delivery of Control Plane Signalling using SCTP.
- Using Diameter for PCC and HSS Interaction.
- DiffServ Basics - EF and AF, Packet Conditioning, DiffServ and MPLS.
- Policy and Charging Control Architecture - PCEF, PCRF, SPR, AF.
- Applying PCC to SAE - Session Binding, PCC and QoS Rule Authorization, Bearer Binding.
- Examples of PCC in Operation - Network Attach, Session Modification.
Section 7: End to End Session Procedures (2 hours)
- Dedicated EPS Bearer Establishment Key Stages - IP-CAN Session Modification, Create Bearer Request, Activate Dedicated EPS Bearer etc.
- UE Initiated Bearer Establishment - UE Requested PDN Connectivity Procedure, UE Requested Bearer Resource Allocation, UE Requested Bearer Resource Modification.
- Service Request Procedures - UE and Network Triggered.
- EPS Bearer Deactivation.
- SAE Charging Architecture - Offline, Online, CDF, CGF, GTP’.
Section 8: SAE Mobility (2 hours)
- TAU Procedure Including Detailed Message Analysis.
- E-UTRAN Handover Procedures - Handover without S-GW / MME Relocation.
- EPC Relocation - S1 Based Handover for S-GW Relocation.
- MME Relocation.
Section 9: SAE Interworking with the 3GPP (2 hours)
- Mapping PDP Context to EPS Bearer.
- GPRS Attach Procedures and the EPS.
- PDP Context Activation with EPS Bearer Activation.
- Context and Bearer Modification Procedures including Secondary PDP Context Activation / Dedicated EPS Bearer Establishment.
- PDP Context Deactivation and EPS Session Termination.
- RAU and Handover - GERAN/UTRAN to E-UTRAN.
- Non 3GPP Interworking - Trusted and Un-trusted Domains, ePDG, PMIP.
Section 10: SIP and the IMS (2 hours)
- SIP Basics - Registration, Session Establishment.
- IMS Example Services.
- IMS Architecture - S-CSCF, P-CSCF, HSS, AS etc.
- IMS Registration including Registration Security Mechanisms (IMS AKA).
- IMS Session Establishment.
Section 11: Voice and SMS Services in SAE (2 hours)
- VoLGA Architecture - VANC, HOSF, SeGW, AAA.
- VoLGA Interfaces - SGi, Sv, Z1, Z3.
- User and Control Plane Protocol Stacks for VoLGA - GA-CSR, GA-RC, GA-RRC, GA-RC, RTP.
- VoLGA Procedures - VANC Discovery, VoLGA Registration, GA-CSR Dedicated, GA-RRC Connected, Mobile Originated/Mobile Terminated Call, SMS.
- SRVCC - IMS anchored VCC, End to End Call Procedure, VoLTE.
- Circuit Switched Fall Back - Preparation and Execution Phase, MO Call, MT Call, SMS.
SAE is a 3GPP initiative to ensure that the evolution of the mobile core network and supporting service architecture enables optimal access to services as well as features such as seamless mobility, roaming and interworking. This course provides a detailed end to end discussion of the protocols, architecture and procedures that are currently being defined by the SAE and associated organizations. Those attending should have a good understanding of LTE operation ie mpirical’s LTE System Engineering course.
Who Should Attend
This course is designed for Support Engineers, Research and Development Staff and Technical Managers who need a detailed knowledge of the operation and architecture of LTE SAE Operation.
Pre-learning
Pre-learning is provided to prime those attending the instructor led phase. Each lesson is based on an interactive online format and should take about 30 minutes to complete. The pre-learning lessons are:
- Test of Understanding - Try the online check to see how much you know.
- LTE Network Architecture.
- LTE Operation.
- Basics of LTE Mobility.