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ABSTRACT

The Indian telecommunication industry, with more than 851.7 million total number of mobile

phone connections as of June 2011, is the fastest growing in the world and is projected that India is now

having a 'billion plus' mobile users. The Indian telephone lines have increased from a meagre 40 million

(approx.) in the year 2000 to an astounding figure now. The main reason for this extraordinary growth is

because of GSM technology.

The Simulation of GSM mobile network planning is done by using Atoll planning tool. This

project involves hands-on simulation exercise on planning of RF network with the help of Atoll planning

software tool. The main aim of radio network planning is to provide a cost-effective solution for the radio

network in terms of coverage, capacity and quality. Here we make use of the Propagation model

parameters viz., Traffic Erlangs, Cell Site Database, latitude &longitude of the site location, Antenna

Parameters viz., Tilt, Pattern, Gain, losses, etc.

Atoll enables task automation through a standard macro language, and includes an advanced

C++ software development kit that facilitates Atoll enables customisation and IT integration. The final

radio plan consists of the RF coverage plans, capacity estimations, radio frequency plans, etc. of a

mobile network area.


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Why Planning of RF sites ??

y For Coverage

y For Capacity

y To improve the Quality of the Network


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Planning of sites for existing

network

y To improve the coverage in the

uncovered area

y

To improve the quality of the networky Capacity requirement


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Planning of sites for Newnetwork

y I

mportant locations in the areay Business area

y Residential area

y Roads and railway routes

y Rural area


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How to select the sites for new

networky Survey the area and take the Latitude/Longitudes of all

the important locations

y

Plot them on the RF

planning tool.y Select the appropriate site locations in the map for

covering all the area to be covered and with good

coverage at all the important locations.

y Then survey the selected locations above for feasibility

and finalize.

y Select the type of the sites required at the above

locations (Micro/Macro/Umbrella coverage)


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How to select the sites Existing

Networky Drive the entire area and take Drive test report

yAnalyze for coverage patches, Low quality area

y Take OMCR reportsyAnalyze for Capacity requirement

y Import the drive test reports and the OMCR Select theappropriate site locations in the map

y Then survey the selected locations above for

y feasibility and finalize.


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RF Planning Tool - ATOLL


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Inputs Required

Site database

Cell Type Frequency Band Calculation Radius Resolution

D

igital maps


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Site Data base

Latitude

Longitude Antenna Type Antenna Height Antenna Tilt BCCH /TCH /BSIC


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Digital Maps

Digital Maps contains clutter, Heights andVectors.

Latest digital maps with high resolution


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Basic steps to work with ATOLL

planning toolOpen a new Project

Import the Digital map File/Import/Select the map select index file of Clutter andimport it Change the colors of the clutter and Vectors for different Vectors for easy

identification

Import the Antennas

In the Predictions right click and create new coverage by signal level change thevalues and colors in the legend for easy identification right click and create new

coverage by C/I

level change the values and colors in the legend for easyidentification right click and create new coverage by Transmitters.

Create a template for 3sector site create a template for 1sector site by giving thefilling the required information.


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Fig.1 Initialization of cellsfor a new network

Fig.2 Optimizationof existing network


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Thank you

rf network planning(1)

Documents