LTE/SAE Evolved Packet Core Training


Introduction 

  • Enhanced UMTS Air Interface (E-UTRA)
  • System Architecture Evolution (SAE)
  • Evolved Packet Core (EPC)
  • EUTRAN/LTE and the SAE/EPC as the Evolved Packet System (EPS)

LTE/EPC Interworking 

  • Interworking with 3GPP IP & Non-3GPP IP-access
  • PCC (Policy and Charging Control)
  • X2, S1 and S11-interface protocol stacks
  • E-UTRA Layer 3 Protocols (NAS and RRC)
  • Non Access Stratum protocols and procedures (EMM and ESM)
  • Idle mode mobility mechanisms
  • NAS security mechanisms
  • The S1 and S11-Interface
  • S1AP & X2AP procedures
  • The GTP version 2 protocol (eGTP)
  • X2 Application Protocol
  • Data forwarding

LTE and EPC Protocol Stacks 

  • LTE-Uu Interface Protocols
  • MAC, RLC, PDCP and RRC
  • UE states and state transitions (NAS and RRC)
  • Radio Resource Control (RRC) procedures
  • Packet Data Convergence Protocol (PDCP)
  • Radio Link Control Protocol (RLC)
  • Medium Access Control Protocol (MAC)
  • E-UTRAN and NAS Protocols
  • S1 and X2 interfaces and protocol stack
  • NAS states,messaging and functions
  • Network identities of UE and EPC
  • Connected Mode and UE States
  • Selection of MME, S-GW, and P-GW
  • Authentication and IP address allocation
  • Default bearer setup and registration
  • LTE-EPC Protocols
  • GTPv2-C, GTP-U, Proxy-MIP (PMIPv6)

LTE and EPC Interfaces 

  • S1: S1-MME/S1AP (eNB – MME)
  • S1-U (eNB-SGW) ,S2A, S2B
  • X2 (eNB – eNB) ,X2AP (X2 Application Protocol)
  • S3 (S4 SGSN – MME), S4 (S4 SGSN – SGW),S5 (SGW-PGW)
  • S6A (HSS – MME),S6B (PGW – 3GPP AAA),S6D (HSS – S4 SGSN)
  • S8 (SGW – PGW),S9 (PCRF – PCRF)
  • S10 (MME – MME)
  • S11 (MME – SGW)
  • S12 (UTRAN – SGW)
  • GX (PCRF – PGW),GXC (PCRF-SGW)
  • RX (PCRF )
  • GR,GN,GP (SGSN – PGW),SGi

LTE-EPC Signaling Principals 

  • Network identities and UE identities
  • Data bearers, EPS bearers
  • PDN connections and APNs
  • Intra-LTE Mobility
  • X2-based handovers
  • Intra and inter MME handovers
  • Intra and inter S-GW handovers
  • Circuit-Switched Fallback (CSFB)
  • Voice Call Continuity (VCC)
  • Single Radio Voice Call Continuity (SRVCC)

IP Multimedia Subsystem (IMS)  

  • IMS Architecture
  • Functional architecture for IMS services
  • IM Subsystem Entities
  • Interfaces to Core
  • IMS Signaling Protocols
  • IMS Scenarios & Operations
  • IMS Quality of Service

Additional Features of SAE 

  • Interworking with UMTS
  • Interworking with WLANs
  • Presence Service
  • MBMS
  • IMS and Support for Voice
  • Seamless Inter-technology Handover via EPC
  • EPC architecture for seamless mobility
  • EPC features in support of mobility
  • Handover scenarios (LTE-UMTS, LTE-GSM and LTE-1xEV-DO)