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LTE INDOOR RADIO PLANNING

"Since we launched our LTE service and got experience from the network, many questions emerged. The whole team had their questions answered and were taken to a higher level by Widermind's LTE performance and vendors’ specific parameters training"

- Tony Oldén, Manager Radio Network Planning, TeliaSonera Sweden

Course Description

In the initial phase of LTE roll-outs, the focus is generally set on achiving

macro coverage in one or more frequency bands. Some challenging

environments such as road/train tunnels, shopping malls, sports arenas,

airports, high rises require specially designed systems to serve the

customers with seemless voice and high data-rate services.

New building materials and metallized windows further inhibits the

mobile signals even for small and medium sized office- and residential

buildings, increasing the demands for customized indoor solutions.

In order to design a well functioning indoor system, it is of great

importance to understand the features and parameters that affect LTE

capacity and its interaction with the existing UMTS and GSM

technologies. In most cases UMTS and GSM are also included in the

designs.

Some systems are built for multi operators each with several

technologies, resulting in a multitude of frequencies at high power. If not

properly deigned, non-linearities might be introduced making the

systems prone to generate inter modulation products (PIM). PIM can

severely degrade the over all performance or even shut down a system.

With several detailed calculations and indoor case studies, the course

“LTE Indoor Radio Planning” also covers some of the LTE Advanced

features soon to be implemented such as Carrier Aggregation, SON, 4X4

MIMO etc.

Content

LTE AIR INTERFACE AND CHANNEL STRUCTURE

• Link LTE protocols and channels

• OFDM and SC-FDMA

• Link adaptation

• LTE FDD radio frame, resource blocks

• Channels and signals

Above: Widermind fiber optic repeater coverage project in Swedish iron ore mine 1500 meters below ground level.

Widermind Drottninggatan 89 113 60 Stockholm Sweden Telephone: +46 8 410 757 11 E-mail: info@widermind.com www.widermind.com

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• Automatic Neighbor Relations

• Physical Cell Identity

• Tracking Area

• Exercise and examples

MULTIPLE ANTENNA TECHNIQUES

• Review of antenna principles

• Tx Diversity vs Spatial Multiplexing

• SU-MIMO, MU-MIMO

• Practical antenna configurations

• MIMO influence on throughput and network capacity

• Exercises and examples

THE RF INDOOR PLANNING

• The RF planning process

• Isolation challenges and Zone planning

• Combining indoor and outdoor coverage

• Passive vs active DAS

• RF measurements and evaluation

• Indoor solutions with multi-operator support

CALCULATE RF COVERAGE FROM GIVEN REQUIREMENTS

• Indoor propagation and channel models for LTE

• Gain and loss calculations in uplink and downlink

• Repeater gain and capacity calculations

• Indoor link budget calculations for coverage and capacity

PLAN AND DESIGN AN INDOOR SYSTEM

• Passive, active and hybrid DAS

• Planning the DAS solution

• Planning the Femto-solution

• Introducing the indoor repeater solution

• Planning and designing indoor MIMO

• Configuring the UL/DL power to meet target performance

• Calculating MIMO antenna options and distance separations

• Combining DAS and MIMO for indoor

• Upgrading existing DAS

• Indoor measurements with and without MIMO

• PIM problems and solutions

• Study case 2014 World cup in Brazil

Target audience

The target audience is Indoor Systems Designers, LTE Radio Planners

and Optimizers.

Pre-requisites The participants must have working knowledge from network operations,

planning or design of UMTS and/or LTE systems.

Course length 3 days