Training Material Distance Based Adjacency Creation for GSM and WCDMA OPT 3.1 CD2 v2

1 © Nokia Siemens Networks Presentation / PLe /06.07.2012

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NetAct Optimizer 3.1 CD2 Basic Distance-based Adjacency Creation

Nokia Siemens Networks Academy

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

Use predefined rules to fill missing adjacencies and fix

constraints

Run distance-based adjacency generation with Optimizer

Check adjacency optimization results

Module Objectives

Distance-based Adjacency Creation

How to fill missing bidirectional and same site adjacencies?

How to take the nearest cells as neighbor cells?

How to view and modify adjacencies in the Browser?

Prerequisites

Invalid adjacencies have been fixed

Site and antenna data defined

Forbidden Constraints have been created

Adjacency templates have been created for each object type

Template assignment rules have been created

Adjacency Constraints

• mandatory constraint

• forbidden constraint

Constraints are global in the actuals

Remember to delete unnecessary constraints

Constraint creation: - manually

- importing from a CSV file

List All Adjacency Constraints to Browser:

Tools->Adjacency Optimization

Starting the Tool

Creation based on distance and antenna direction

• Available also for planned cells

Use the Tools menu to start the optimization for the active scope

Starting Adjacency optimization (1/2)

Target objects:

– GSM cells

– WCDMA cells

– planned cells

Selection of target objects:

– an existing scope

– an active scope

– a polygon

– from the Navigator

– from the Browser or

– from Map

Start Adjacency optimization

– from the popup menu or

– from Tools

Starting Adjacency optimization (2/2)

Select the adjacency types to be loaded

For bidirectional optimization both ADJW and ADJG are required if inter-system adjacencies are needed

With multiple 3G carriers ADJI can be selected

Select only ADCE if the target is GSM only

Adjacency optimization tool

Optimizer rules can be used to fill missing bidirectional and same site adjacencies and mandatory constraints

Mandatory constraint should always have an adjacency

Forbidden constraint should NOT have an adjacency

Same site cells should always have mutual adjacencies

All adjacencies should be bidirectional

One rule is used to delete existing adjacencies with forbidden constraint

Resulting correction plan can be used also for distance-based creation

Selecting Rules

Use bidirectional optimization option in Common tool view must be selected to use Create bidirectionality rule

Common Parameters

Create bidirectionality is recommended

• Both ADJW and ADJG types need to be in the scope for this

Changes should be enabled between the scope and buffer area

Minimum and maximum adjacency list lengths can be modified

In GSM optimization the user can

define band-specific list length

limitations

Go to Creation parameters

Creation Parameters

Open parameters For All Adjacency Types and select options

Enable creation for each adjacency type separately

• Initial selection of types limits the available choices here

Adjacency type specific creation parameters

• Distance and relative antenna angle

Common Creation Parameters

Options related to types that are not loaded are inactive

Allowed Collisions in Creation

In typical Adjacency optimization plan NO collisions are allowed

• Existing collisions prevent creation of the same type adjacencies for the cell -> Allow collisions to create new adjacencies

Adjacency Creation Parameters

For ADJS, ADJG and ADJI select only one plan based on distance and specify

• distance between the sites

• relative angle of antennas (see next slide)

Distances and angles can be different for each type

Theta Angle

Angle measurement starts from the line connecting the sites

Measurement always to shortest route

Theta angle: q = a + b

Cell 1

Cell 2

Start Adjacency optimization

Check that nothing is selected in the Deletion tab

Remember also that you may have Rules selections

Start optimization and check the results in tables

Adjacency optimization algorithm is very fast

Results Summary

Detailed Results on Created Adjacencies

Creation Priority

Adjacencies to be created or deleted are in the order of importance based on the distance and theta angle

Distance and theta angle can be adjusted for the next round of optimization

Manually created adjacencies in the same plan are included in this list

Saving Results

Save your results to a plan

Data is saved to the plan that was originally open when the Adjacency optimization tool was started

If no plan was open in Adjacency optimization startup (Actual Context) then a new plan must be created by pressing the Save button

Distance-based Creation Workflow

Select optimization strategy options in Common tool view

Check the minimum and maximum list lengths in Common tool view

Check the Create New Adjacencies checkbox in Creation tool view

Select options For All Adjacency Types

Check the adjacency types and their options in Creation tool view

Select only one plan based on distance

Adjust Maximum Distance and Maximum Theta Angle for all types

Check that Delete Adjacencies is not checked in Deletion tool view

Run Adjacency optimization algorithm

Exercise

Choose optimization scope and start adjacency optimization

Check common parameters

Select Creation parameters for all and selected types

Run distance based creation for your scope

Check the results in Adjacency Browser and run again if needed

List Selected to Browser

After saving to plan selected adjacencies can be located on the map or listed to the Browser

Text results can be copied and pasted to other tools

Use Ctrl-A to select all

Changing Template 1

In Browser the adjacency template can be changed

Parameter values changed automatically

Changing Template 2

Templates can be created and modified in CM Editor

New templates become visible in Optimizer after Refresh action in Options->Template Assignment Rules

Adjacencies in the Browser

After the optimization you can use File->List Planned Elements

Created adjacencies can be removed from plan

Deleted adjacencies can be undeleted

From the Map you can also list cells to the Browser and use special profile to handle the adjacencies

Exercise

Choose optimization scope and start adjacency optimization

Check common parameters

Run distance-based creation for your scope

List created adjacencies to the Browser and check parameters

Check and change template to all created adjacencies

List a cell to the Browser and create a profile that allows you to see different types of incoming and outgoing adjacencies

Document change history

Date Version Name Change comment

06.07.2012 1.0 PLe First version for Optimizer 3.1 CD2

14.1.2013 2.0 PLe Updated after review. Valid for Optimizer 3.1 CD2 PCD

Training Material Distance Based Adjacency Creation for GSM and WCDMA OPT 3.1 CD2 v2

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