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EPC - Evolved Packet Core

Course Description

The course “LTE Evolved Packet System with focus on EPC features, protocols, QoS, charging rules and VoLTE support” is intended for telecom professionals with the task of implementing the mobile system standards based on 3GPP LTE and more specifically, the Core Network parts. Therefore the focus is set on understanding the LTE system from a mobile operator’s perspective, addressing the implementation issues and challenges for the Core Network Engineers.

A thorough system overview of the LTE/EPS is featured along with all the details on the Network functions, interfaces and network capabilities. The EPC systems and their features and signaling protocols are analyzed in detail. The role of Diameter/SIP and architectural options are explained and the new policy and charging rules principles are clarified.

Furthermore, a number of traffic cases are studied and several comparisons are made to the existing UMTS technology and the inter-working with the legacy systems. In the end, the important issue of Security is discussed.

Content

3GPP RELEASES
  • Introduction
  • Releases
  • 3GPP, Standardization Timeline and ITU
  • Core Network Evolution - R99, – R4, – LTE
  • Terminology
LTE RADIO NETWORK ASPECTS ON EPC SERVICES
  • E-UTRAN Properties
  • Modulation
  • OFDM
  • MIMO
  • SC-FDMA
EPC, EVOLVED PACKET CORE FEATURES AND PROTOCOLS
  • EPC Functions and Entities
  • Interfaces and Reference Points
  • WM-Map1: GSM/GPRS/UMTS/EPS Nodes
  • Bearers and Connections
  • Traffic Case: Network Attach including Default Bearer Activation
  • IDs, Contexts and Tunnels
  • Inter eNB Handover
  • Traffic Case: Inter-eNB HO
  • Location Area, Routing Area, Tracking Area
  • WM-Map2: EPS Bearers and QoS
  • Logical and physical nodes
  • Voice in LTE/EPS (options)
EPC INTERFACES, PROTOCOLS & CONTEXTS
  • Protocol Stack for EPS
  • EPC Protocols
  • Encapsulation & Tunneling
  • The S1 Application Protocol
  • The SCTP Protocol
  • The NAS Protocols (EMM and ESM)
  • HSS data – Before Attach
  • The GTP Protocol & TEID
  • The SGs interface
  • Allocated Resources
  • Dedicated Bearer Activation (GTP-C)
  • GERAN/UTRAN/E-UTRAN Coverage
  • Idle & Connected Mode
  • Contexts
  • WM-Map 3: EPC Interfaces
DNS AND EPC
  • Introduction Domain Name System
  • Specific Domain Names and FQDNs
  • Records used in EPC
  • DNS on IPX/GRX
  • NAPTR
  • SRV – Service Record
  • Address Record
DIAMETER AND EPC
  • Diameter Interfaces
  • Diameter Specification Structure
  • Diameter Message Format
  • S13 procedures
  • S6a Location Management procedures
  • Attribute Value Pairs
  • 3GPP Specific Application IDsTracking Area based mobility
MOBILITY
  • GUTI
  • Areas and Identities
  • WM-Map 4: Mobility in Idle mode
  • Mobility in Connected mode
  • Tracking Area List
THE QOS ARCHITECTURE
  • QoS Parameters
  • Bearer & QoS Concepts
  • Bearer QoS Characteristics
  • Traffic Flow
  • TFT – Example
INTERWORKING
  • WM-Map 5: Interworking with other RATs
  • Dual registration and ISR
  • Mapping coverage
  • 3GPP access: CS Fallback
  • Traffic Cases
  • Non-3GPP Access, Wi-Fi Offloading
  • Trusted/Untrusted Access
  • S2a, S2b & S2c
  • New functions ANDSF, ANQP
  • Interworking Scenarios
  • Mobile IP (v4)
  • Traffic case: non-3GPP access
POLICY AND CHARGING CONTROL PCC
  • WM-MAP 9: PCC
  • The Service Data Flow
  • PCRF & PCEF
  • Policy and Flow Based Charging in R6
  • PCC – Policy and Charging Control in R7
  • PCC – Architecture
  • The PCC Rule
  • Rx, Gx and S9 Procedures
SECURITY IN EPC
  • Introduction
  • Security Architecture
  • Key hierarchy
  • The Key Derivation Function (KDF)
  • NAS AKA and Security Mode Control
  • Security Gateways
  • Transport mode & Tunnel mode

Target audience

The course targets Core Network engineers with the task of implementing the mobile system standards based on 3GPP LTE.

Pre-requisites

The participants should have a good understanding and working experience from WCDMA and GSM Systems.

Course length

3 days

Price

2.400 €

Code

WM0060-A

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