On-line: LTE/SAE System Overview

LTE is being widely deployed and therefore anyone involved in the cellular industry will need a firm grounding in the LTE (Long Term Evolution) and its associated SAE, System Architecture Evolution.

LTE / SAE System Overview course is aimed at professionals in the telecommunications industry who work in all aspects of the business from project and product management through other areas such as business development, marketing, sales through to those who are directly involved in the technology including systems engineers, testing, verification and operations engineering.

The course provides a thorough introduction to the LTE / SAE system. It will enable all who undertake the course to have a good understanding of the concepts and implementation of the LTE / SAE System.

PREREQUISITES:

For anyone undertaking the LTE / SAE system overview, it is advisable to have a general understanding of the architecture, terminology and modes of operation of the GSM/UMTS radio access and core networks. A basic knowledge of IP, Internet Protocol is also advised as LTE / SAE has a significant reliance on this technology.

CONTENTS:

The LTE / SAE System Overview course has been prepared in a way that is easy to understand. It covers aspects of LTE / SAE system including the basic functionality of the Evolved Packet System, EPS. This consists of the evolved Radio Access Network, E-UTRAN and the Evolved Packet Core, EPC as defined in 3GPP Releases 8 & 9.

The LTE / SAE system overview course describes the network architecture, nodes and mode of operations of the Evolved Packet System (EPS). It details the relationship of the EPS to legacy 2G/3G networks as well as the interoperability with them and other non-3GPP networks such as CDMA2000. The LTE / SAE course also details the radio access network for LTE describing he operation of key technologies including OFDM and MIMO.

In order to ensure that concepts and functions are understood, the basic message-level traffic cases are shown throughout the course.

EPS (LTE/EPC) System Overview

• Evolution of today’s 2G and 3G networks

• Relation to legacy 3GPP networks and other networks

• EPS architecture – nodes; overall mode of operation

• Basic Concepts: EPS Bearers, PDN Connections, Quality of Service, QoS

E-UTRAN – the LTE radio access network

• E-UTRAN nodes and mode of operation

• E-UTRAN radio interface & LTE frequency bands

• E-UTRAN Traffic cases

OFDM Basics

• OFDM - Orthogonal Frequency Division Multiplex basics

• Use of OFDM in E-UTRAN

• MIMO, Multiple Input Multiple Output and its use within LTE

Layer 2 and 3

• Protocol stack for the E-UTRAN

• RRC - Radio Resources Control

• NAS - Non Access Stratum protocols

• Layer 2: PDCP, RLC and MAC functions

• Traffic case

E-UTRAN Signal Channel Architecture

• E-UTRAN channel architecture

• Logical, Channels, Transport Channels and Physical Channels

• Channel mapping onto the OFDM signal

Radio Resource Sharing principles

• Resource allocation considerations and principles

• eNB resource scheduling

EPC – the evolved core network

• Core network architecture

• EPC nodes

• Security within EPS

• Context storage and context transfer

• Bearers , tunnelling and Quality of Service (QoS)

EPC Protocols

• S1AP – the S1 Application Protocol

• GTP – GPRS Tunnelling Protocol

• Diameter

• Relevant Procedures

Mobility

• Pool concept for MME and SGW

• Idle mode mobility scenarios

• Connected mode mobility scenarios

Interworking with other Radio Access Technologies

• Mobility principles between E-UTRAN and GERAN/UTRAN

• Selected traffic cases with interworking between E-UTRAN and GERAN/UTRAN

• CS Domain interworking – Voice Call Continuity and CS Fallback

• Interworking with Non-3GPP IP-access

• Selected signalling flows

IMS, IP Multimedia Subsystem

• Multimedia over IP using SIP

• IMS architecture

• Basic traffic cases for IMS

• IMS relation to EPS

PCC – Policy and Charging Control

• What is Policy and Charging Control?

• PCC architecture

• PCRF and PCEF

• Handling of user data / traffic using PCC

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