On-line: LTE Radio Interface

The LTE Radio Interface training course is aimed at telecommunications professionals involved with LTE, or those about to be involved with LTE. It covers those elements required for those working developed for telecom professionals working with hardware and software development, system engineering, testing and verification within LTE.

LTE Radio Interface Course Overview:

The LTE Radio Interface course contains all the relevant information required for telecommunications professionals wanting to learn about the LTE radio interface. It provides detailed information about the evolved radio access interface, E-UTRA that formed part of the updates for the Evolved Packet System, EPS that were in 3GPP Release 8.

The LTE Radio Interface course covers the OFDM-based radio interface physical layer in detail. The course describes the Layer 1 and gives the mapping of physical channels onto OFDM Resource Elements.

Downlink and uplink control channels for scheduling, Hybrid-ARQ operation and feedback signalling are all described in detail.

The course covers the layer 1 procedures for synchronisation, random access, scheduling, power control, sounding and Hybrid-ARQ. An overview of the basic concepts behind OFDM transmission and MIMO is also included.

E-UTRA Overview

• Evolved Packet System network architecture

• E-UTRA radio techniques

• E-UTRA spectrum and bandwidth allocation

• Standardisation process status for LTE and LTE-A

Protocol Architecture for E-UTRA

• Logical, transport and physical channels and their relation to the radio interface protocol stack

• Overview of RRC signalling and layer 2 functions relevant for proper layer 1 operation

OFDM usage

• Overview of the basic characteristics of OFDM transmission: subcarriers, OFDM symbols, cyclic prefixes, DFT processing

• E-UTRA resource definitions: Resource Elements, RE Groups, Control Channel Elements and Physical Resource Blocks

Multi-antenna Transmission in E-UTRA

• Tx/Rx diversity and MIMO basics

• E-UTRA transmission modes and mode selection

• Tx diversity, spatial multiplexing and beam-forming in E-UTRA

• The E-UTRA 'MIMO' transmitter: layer mapping, SFBC/CDD precoding and related feedback signalling

• Antenna-specific Reference Signals (RS)

Layer 1 Information Processing

• Channel coding and Rate matching

• Scrambling and Modulation

• Resource Element mapping and OFDM signal generation

• Layer mapping, Pre-coding and Antenna mapping

• The E-UTRA radio frame, sub-frame and slot structure

Synchronization & Network Access

• P-SS, S-SS and the Physical cell Id.

• Pseudo-random sequences generation and reference signals

• PBCH and system information

• RACH and the Random Access Procedure

• PCH and the Paging procedure

Downlink Transmission Procedures

• Downlink control channels mapping onto CCEs and REGs

• L1/L2 control signalling procedures: PCFICH, PDCCH and PHICH

• Blind decoding of control channels in the UE: search spaces, aggregation levels and PDCCH formats

• PDCCH contents: resource allocation type 0, 1 and 2

• Determination of transmission mode, MCS and TB size

• CQI and PMI/RI reporting options

Uplink Transmission Procedures

• PUCCH time-frequency mapping

• PUCCH control signalling

• Different PUCCH formats

• PUSCH/PUCCH operation

• Uplink timing alignment and power control

• Demodulation Reference Symbols, DMRS

• Sound Reference Symbol, SRS

Hybrid-ARQ and Scheduling

• HARQ types, HARQ processes, timing, redundancy versions

• Adaptive vs Non-adaptive retransmission

• DRX and Semi-Persistent Scheduling (SPS)

Prerequisites for the course:

In order to gain the maximum from the LTE Radio Interface course it is advised that those taking it should have a basic knowledge of the LTE architecture, terminology and modes of operation of the E-UTRAN radio access network. An understanding of UMTS High Speed Packet Access, HSPA concepts is useful.

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