tdd dl carrier aggregation ver2

©2013 Nokia Solutions and Networks. All rights reserved.

TDD DL Carrier Aggregation

2 ©2013 Nokia Solutions and Networks. All rights reserved.6/24/15Document ID / Version number / Life cycle status / Department / AuthorFor internal use

DL CA Aggregation - Introduction

• DL Carrier Aggregation is RL45TD feature (LTE 1558 Carrier Aggregation) is that brings into life the LTE Advanced concept

• Primary aim of the feature is to boost mean and peak user throughput via sending the user data simultaneously over two carriers

• Maximum achievable peak user throughput could be doubled in contrast to non-CA case

• To make the aggregation of carriers possible, regular cell is paired with additional logical cell serving the same geographical site sector

• The feature supports intra-band carrier aggregation for 20 MHz + 20 MHz channel bandwidths

• There is no carrier aggregation in the uplink direction


DL CA configured on Sec-A

2 FBBA (Transmission Cards)

FZNI (RF Module)

DL CA Aggregation - Configuration

FSME (System Module)

SW Rel . RL45

Site Selected TMK742


DL CA Aggregation - Configuration

Cell are configured with 2 Ports using 2*2 MIMO (Dynamic Open Loop)


DL CA Aggregation - ConfigurationBelow are the Freq configured at the site , TMK742

DL CA is enabled by below parameter

DL CA


DL CA Aggregation – Field Results

DL Throughput

Max DL : 163 .7 MbpsAverage DL :157.4 Mbps


This counter shows average number of DL CAcapable UEs and the the average number of UEs inthe current cell, which have a configured SCell.

NOTE : The reported value is 100 times higher than the actual value (for example 1.00 is stored as 100).

DL CA Aggregation - Performance

Peak PDCP Throughput on DL CA Cell reaching around 170 Mbps


Thank You!!

tdd dl carrier aggregation ver2

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