4G – Long-Term Evolution (LTE) Air Interface

COURSE OVERVIEW

LTE is the third generation partnership project (3GPP’s) new standard for wireless broad band data services. It consists of an E-UTRAN network that applies OFDMA-based technology and an all-IP EPC core network. This architecture permits the transition of the 3GPP system into the optimized system of packets and provides the support of the different RATs (Radio Access Technologies), high-data-rates, and low latencies. Also it gives an evolutionary way for 3GPP and non-3GPP legacy standards.

The present course deals with the detailed study of the LTE air interface. The presentation is initiated with an overview of LTE/E-UTRAN network architecture and protocols and the introduction of OFDMA, the core LTE technology. Then, it discusses the DL and UL channels, signals and operations. Then comes a detailed presentation of the MAC, RLC, and PHY layers of the LTE air interface.

TARGET AUDIENCE

Engineers responsible for mobile operation, maintenance and planning.

Course Prerequisites

4G & LTE System Survey

Expected Accomplishments

Describe the development of the network architecture basics OFDM.
Explain OFDM Concepts
Deep dive into the physical layer and functionalities in mobility and idle mode(s)
Describe MIMO in LTE
people should fully understand MAC and RLC in depth
Learn LTE Packet Data Convergence Protocol (PDCP Layer)
Render the description of the RRC layer and the related operations

COURSE OUTLINE

Evolved Packet Core, A New-generation Network Architecture & Protocols

Describe network architecture evolution.

Describe Evolved Packet System (EPS) network components and interfaces

Provide EPS UEs and Sx/Rx protocol stacks info.

Don’t miss the Basic Security aspects of EPS.

Elaborate upon the topic’s mobility management, session management, and IP connectivity aspects.

EPS QoS architecture, principles

OFDM basics

Explain OFDM’s basic concepts.

OFDM, ISI, and a Cyclic Prefix due to the fact that NYAL

Understand OFDM and SC-FDMA

E-UTRA Essentials

Specify the most important E-UTRA Air interface features.

Peak data rates in Air Interface and UE categories

The downlink and uplink time and frequency organization of E-UTRA should be known

Define the elements of an E-UTRA UL/DL resource block

Districting/zone scheduling and interference management

E-UTRA DL channels/signals/operations

Ponder the E-UTRA Physical Channels and Signals

Describe the initial acquisition procedures

outline shared channel operation of DL

Present the DL control channel functions in the DL procedure.

comprehend the manner the UE reports uplink channel feedback information via CFI

Describe DL HARQ operation

Explain DL data transport modes

MIMO in LTE

E-UTRA Uplink (UL) Channel, Signal and Operation

The UL channels in E-UTRA and the mapping onto time/frequency resources

Describe E-UTRA UL operations

LTE Performance is compared with HSPA.

LTE Medium Access Control (MAC) layer

Describe key MAC functions.

Explain channel mapping & multiplexing.

Give an example of MAC PDU formats for different transport channels.

Describe RACH procedure

Know timing alignment and (DRX) measures

LTE Radio Link Control (RLC) Layer

Enumerate the functions of RLC.

Describe the different RLC modes of LTE

Compare LTE and HSPA RLC implementations

The retransmission process consists of the re-segmentation of retransmitted messages.

LTE PDCP Layer

Share the introduction of PDCP.

Specify PDCP PDUs and PDU formats

Describe PDCP functions

LTE and HSPA comparison

LTE RRC Layer

Offer an introduction to RRC in LTE

Describe the idle mode procedure

Illustrate what RRC signaling is when a Related mode is applied.

Provide RLF Handling in UE