Telecom Articles by Samir Amberkar: wp-lte-overview-p3

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3GPP Modem
Simulator

Test Your
Knowledge

LTE Overview

Technologies selected

OFDM/OFDMA Phy

Spatial multiplexing, MIMO upto 4x4, 2 TB

1 ms TTI (compatibility with WCDMA time values)

Higher order modulation QPSK, 16QAM, 64QAM

Adaptive modulation and coding

Bandwidth from 1 MHz to 20 MHz (6 possible)

Operation 800 MHz till 2.5 GHz

HARQ

Packet bearers

Simplified, IP based architecture/interfaces

Attach + Session management

GBR and non-GBR based QoS

ISR/mapping of IDs, contexts


Copyright © Samir Amberkar	Slide 3 of 17

Notes

LTE (Requirements and challenges - 2) - 4
LTE (Requirements and challenges - 3) - 5
LTE - basic PHY structure
LTE (Requirements and challenges - 4) - 6
LTE (So we choose ...) - 7
LTE - SAE/EPS
LTE - QoS
LTE - end-to-end UE initial attach
LTE NAS Security - 2
LTE books

Rel 8 feature document
3GPP TS 36.300 "E-UTRAN overall"
3GPP TS 23.401 "EPS overall"
3GPP TS 36.101 "UE radio transmission/reception"
List of all referred specifications along with their 3GPP locations is available here.