Training_material_GSM_Frequency_Optimization_OPT_3.1_CD2_v2

1 Nokia Siemens Networks Presentation /PLe /06.07.2012

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NetAct Optimizer 3.1 CD2 for GSM

GSM Frequency Optimization



Nokia Siemens Networks Academy

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At the end of this module the trainee should be able to:

Plan new frequencies for added TRXs

Outline the steps of the measurement based frequency

planning process

Assign and modify frequency groups, forbidden channels,

set manual separations and separation violation penalties

Perform frequency and Base Station Identity Code (BSIC)

allocation for non-hopping, baseband hopping, and

synthesized (RF) hopping networks

Compare different allocations, save and verify the results

Module Objectives



Select the scope

Add frequencies to new TRXs

Check that you have measurements needed for frequency optimization

Import forbidden channels

Start the Frequency Optimization tool

Create frequency groups

Set violation penalties

Assign frequency groups to BTSs

Set manual separations

Define forbidden channels

Set hopping mode

Define allocation targets and start allocation

Check the results

Save and provision the frequency plan

Steps in Frequency optimization



Interference Analysis

Before starting the Frequency optimization it is useful to find the worst interferers that cause problems over a long distance.

These problem cells should be treated first and new measurements run.



Select the scope

Add frequencies to new TRXs

Check that you have measurements needed for frequency optimization

Import forbidden channels

Start the Frequency Optimization tool

Create frequency groups

Set violation penalties

Assign frequency groups to BTSs

Set manual separations

Define forbidden channels

Set hopping mode

Define allocation targets and start allocation

Check the results

Save and provision the frequency plan

Steps in Frequency optimization



Add frequencies to new TRXs Optimizer can generate frequencies for new TRXs in BTSs

No plan is needed (close plan before starting)

Select BTSs, cells or sites on the Navigator, Map or Browser and use menu Tools->Frequency Optimization-



New Frequency: General Settings

New TRXs can be added to TCH or underlayer

Only non-hopping or BB- hopping TRXs

Frequency selection can be based on

optimization cost function

Interference

Assign Default Frequencies if frequency groups are not available or applicable

Select Interference type and separation violation penalties in the Interference tab



New Frequency: Interference Settings

Select Interference type

Violation penalties are explained later in this module



New Frequency: Select Target BTSs

In case of Master and Slave BTSs the user has to select the targets



New Frequency: Select Target BTSs



New Frequency Results

To view and modify the results later select

Tools->Frequency Optimization->Cell Frequency Manager...

The results disappear after the new TRXs become actual

Training_material_GSM_Frequency_Optimization_OPT_3.1_CD2_v2

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