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optimizer adjacency optimization based distance
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1 © Nokia Siemens Networks Presentation / PLe /06.07.2012
For public use – IPR applies
NetAct Optimizer 3.1 CD2 Basic Distance-based Adjacency Creation
2 © Nokia Siemens Networks Presentation / PLe /06.07.2012
For public use – IPR applies
Nokia Siemens Networks Academy
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3 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
4 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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?
5 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
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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
7 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
8 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
9 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
10 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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Adjacency optimization tool
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Rules
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
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Selecting Rules
Use bidirectional optimization option in Common tool view must be selected to use Create bidirectionality rule
13 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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?
14 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
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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
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Common Creation Parameters
Options related to types that are not loaded are inactive
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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
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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
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Theta Angle
Angle measurement starts from the line connecting the sites
Measurement always to shortest route
Theta angle: q = a + b
a
b
Cell 1
Cell 2
20 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
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Results Summary
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Detailed Results on Created Adjacencies
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Detailed Results on Created Adjacencies
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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
25 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
26 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
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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
28 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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?
29 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
30 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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Changing Template 1
In Browser the adjacency template can be changed
Parameter values changed automatically
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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
32 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
33 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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
34 © Nokia Siemens Networks Presentation / PLe /06.07.2012
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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