wcdma tutorial for mentum planet 5.3.1

>> WCDMAGetting Started Tutorial

for Mentum Planet 5.3.1

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Last updated August 17, 2011

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WCDMA Getting Started Tutorial

The Getting Started Tutorial focuses on WCDMA and is intended to provide you withsome understanding of the basic concepts of network modeling using Mentum Planet.

It is assumed that you are using the standard Windows desktop, and that you knowhow to access ToolTips and shortcut menus, move and copy objects, select multipleobjects using the Shift or Ctrl key, resize dialog boxes, expand and collapse foldertrees. No prior knowledge of Mentum Planet is required to complete the tutorial.

Ensure you have installed Mentum Planet on your computer and set asideapproximately two hours to complete the entire tutorial.

NOTE: If you have any comments on the tutorial, please send them [email protected].

TIP: To view the Mentum Planet help, from any dialog box, press F1.

This tutorial covers:

Learning Mentum Planet for WCDMA 5

Defining project settings 7

Customizing your workspace 9

Generating and viewing predictions 12

Identifying sectors using flags 15

Assigning a propagation model 18

Importing network data 20

Creating a traffic map 22

Editing subscribers 24

Generating and viewing a network analysis 26

Identifying sectors causing CPICH pollution 29

Generating a Monte Carlo simulation 30

Generating layer statistics 32

Creating and applying neighbor plans 34

Creating an Interference Matrix 36

Planning scrambling codes 38

Placing sites automatically 41

Optimizing a single site 43

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Learning Mentum Planet for WCDMA

Using the tutorials, you can quickly and easily familiarize yourself with MentumPlanet. The Mentum Planet interface has been designed to provide easy access tothe main workflows you follow as you design and optimize a wireless network. Itconsists of the following elements:

n Project Explorer—provides quick and easy access to MentumPlanet functionality from a central location. By default, it is docked tothe left but you can customize the location of the Project Explorer tosuit your needs.

n Mentum Planet menus—provide an alternate way of accessingMentum Planet functionality.

n Toolbars—provide an alternate way of accessing Mentum Planetfunctionality. Commonly used toolbars include the Main toolbar, theSite toolbar, the Analysis toolbar, and the Network toolbar.

A Mentum Planet project contains all of the information pertaining to a particularwireless network. It consists of a collection of files and folders. Each project has aproject (.planet) file that defines the project structure and references the associateddata (planet.dat) file.

Downloading the tutorial project

The project you will be working with has been pre-configured to illustrate the steps inthe tutorial workflow. You can, however, use it to further explore the features ofMentum Planet.

CAUTION: In order to complete the tutorial, you require a valid WCDMA license. Ifyou do not have one, contact Customer Care to obtain a temporary license.

In this lesson, you will download and open the project. You need a valid product IDnumber in order to access the Customer Care section of the Mentum website.

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To download and unzip the tutorial project

1 Use your Product ID to log in to the Customer Care section of the website at http://www.mentum.com/index.php?page=customer-care&hl=en_US.

2 From the left-hand menu, choose Product Downloads.

3 In the Password box next to the version of Mentum Planet you use,type the password supplied by Customer Care, and click Submit.

4 Scroll down to the Tutorial section of the download page, right-click thefile in the Single column and save the .zip file to a location on yourcomputer.

5 Unzip the files.

A WCDMA folder is created containing all project files.

6 Double-click the WCDMA.planet file to open the project in MentumPlanet.

The project opens in the Map window.

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http://www.mentum.com/index.php?page=product-downloads&hl=en_US



Defining project settings

Project settings encompass all the parameters that determine how a project isdisplayed and what it contains. They define the geodata to be used, the coordinatesystem to adhere to as well as the workspace associated with it. It is the MapInfoworkspace (.wor) file that stores the list of all tables, windows, and settings you areusing. Using a workspace and the autosave feature, you can ensure a project looksexactly the same every time you open it. Workspaces enable you to work moreefficiently and eliminate the need to open map layers individually each time you viewa project.

You can also define custom data definitions that can be used to add custom attributesto project entities such as base stations, sites, sectors, repeaters, and antennas.

In this lesson, you will browse project settings and associate a workspace with theproject.

To associate a workspace with the project

1 With the WCDMA tutorial project open inMentum Planet, do one of thefollowing:

n Choose Edit Project Settings.

n Click the Project Settings button on the Network toolbar.

2 On the General tab, in theWorkspace section, click Browse,navigate to the ProjectOpening.wor file saved in the WCDMA folder, andclick Open.

The Workspace label is now blue to indicate that a change has been made butnot applied to the project.

3 Enable theWorkspace Autosave check box.

Using the workspace autosave feature ensures that the next time the projectis opened, it will look exactly as it did when it was last closed.

4 Click the Coordinate System tab.

This is where you can change the coordinate system used for site data.

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5 To define a custom attribute that will enable you to specify the streetaddress for each site, do the following:

n Click the Custom Data tab.

n In the tree view, choose Site and click the Text tab.

n Click Add.

n Click in the Name field and type Street Address.

6 Click OK.

7 Choose File Close Project to close the project or press CTRL+F3.

8 In the Planet confirmation dialog box, click Yes.

9 When prompted to save your changes, click Yes.

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Customizing your workspace

You can change how your workspace is organized in order to better visualize how thenetwork performs. You can also define preferences that affect how your workspacefunctions. These settings are preserved between Mentum Planet sessions.

In this lesson, you will change how the heights and clutter file are displayed and opena vector road file. You will also specify user preferences.

TIP: To dock and undock toolbars, choose GIS Options Toolbars.

To customize your workspace

1 To open the project, in Mentum Planet, choose File RecentProjects WCDMA Tutorial.

The entire project path is displayed in the information bar at the bottom of theMentum Planet window.

2 On the Main toolbar, click the Layer Control button.

3 In the Layer Control dialog box, select the Ottawa_DEM30m file.

4 Click the Layer Properties button.

5 In the Layer Properties dialog box, in the Display Mode section,enable the Style Override check box.

6 Click the style override button.

7 In the Adjust Image Styles dialog box, in the Conversions section,choose Grayscale and click OK.

8 In the Layer Properties dialog box, click OK.

9 In the Layer Control dialog box, select the Ottawa_17Class_30m fileand click the Layer Properties button.

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10 In the Enhanced Rendering section, type a translucency value of 60%and click OK.

11 In the Layer Control dialog box, select the clutter file and drag it abovethe heights file.

12 Click OK.

The clutter file displays on top of the heights file.

13 In the Project Data category, within the Geodata folder, right-clickthe Custom folder and choose Add.

14 Browse to the Custom Data folder within the project Geodata folder andselect the Ottawa_30m_Clutter_w_HWY&Roads.tab file.

15 Click Open.

The file is added to the Custom folder in the Project Explorer.

16 Right-click the Ottawa_30m_Clutter_w_HWY&Roads.tab file and chooseView.

17 On the Main toolbar, click the Zoom In button to better view sitesand highways.

18 To remove the vector file, right-click the Ottawa_30m_Clutter_w_HWY&Roads.tab file and choose View again.

The checkmark next to the View command is no longer displayed to indicatethat the highways are no longer shown in the Map window.

To define user preferences

1 Choose Edit Preferences.

2 In the User Preferences dialog box, in the tree view, choose ProjectExplorer.

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3 In the Performance section, enable the Show Windows categorycheck box if it is not already selected.

4 In the Zoom Automatically section, enable the On Viewed SiteSelection check box if it is not already selected.

5 Click OK.

6 Do one of the following:

n If you want to proceed to the next lesson, leave the Map windowopen.

n If you want to stop here, choose File Close Project, click Yes toconfirm you want to close the project and Yes to confirm you wantto save the project.

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Generating and viewing predictions

Predictions use a propagation model, terrain and clutter information, and generalsector settings including the power, antenna, and azimuth to predict the signalstrength and path loss of a sector at any location where the signal exceeds thedefined minimum level.

Path loss and signal strength predictions are used in network analyses to determinecoverage and other metrics.

In this lesson, you will generate and view predictions for one site.

To generate predictions

1 Open the WCDMA tutorial project if it is not already open.

2 In the Project Explorer, from the Category list, choose Sites.

3 Expand the Sites node.

4 Right-click the C2750 site and choose Generate Predictions.

5 In the Prediction Generator, click Generate.

6 When prediction generation is complete, click Close.

To view sector predictions

1 In the Project Explorer, in the Sites category, expand the Groupsnode and the Sharednode, and then right-click the Downtown_UMTSnode and choose View.

Local groups are saved on your workstation and cannot be shared using DataManager while Shared groups are stored in Data Manager and can be sharedwith other users.

2 Expand the Downtown_UMTS node.

The C2750 site is part of the Downtown_UMTS group.

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3 Expand the C2750 site, right-click theWCDMA base station, andchoose View Sector Predictions Modeled CPICH.

You could also view the sector prediction by expanding the Sites node and thenexpanding the C2750 site, and right-clicking the WCDMA base station.

The prediction layer shows the coverage area of each sector's CPICH.

4 Choose View Grid Legend.

5 In the Grid Legend dialog box, from the Grids list at the bottom of thedialog box, choose CBs_C2750_4_5_6_CPICH.grd.

6 Review the legend and close the window.

7 On the Grid Analysis toolbar, click the Grid Info button and thenclick in the Map window.

The Grid Info dialog box opens. You can resize columns by clicking the headingdivider.

8 In the Map window, click anywhere on the displayed prediction layer toview prediction values.

9 When you have finished, close the Grid Info dialog box.

To remove predictions from the Map window

TIP: You can remove prediction layers from the Map window using various methods.You will use the View Predictions dialog box in this exercise but you can also use theClose Table command from the GIS menu or the Close command available when youright-click a layer in the Windows category.

1 To remove the prediction displayed, choose View Predictions.

2 In the View Predictions dialog box, click Close All Tables, and clickClose.


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14

Identifying sectors using flags

Flags are properties that you can use to identify sectors as having certaincharacteristics (conditions). You can create multiple flags, and each flag can havemultiple conditions, but you can assign only one condition per flag to a sector. Theconditions of a flag should be a set of related but mutually exclusive values (e.g., youcould have a flag called "Status" with conditions called "On-Air", "UnderConstruction", "Offline").

In this lesson, you will use the Tabular Editor to associate the On_Air flag to theDowntown group of sectors.

To identify sectors using flags


2 In the Project Explorer, in the Sites category, expand the Sites node.

3 Double-click the C2750 site.

4 In the tree view, choose sector 4.

5 On the General tab, in the Flags section, choose the On_Air conditionfor the Status flag.

6 Repeat Step 4 for sectors 5 and 6.

7 Click OK.

When you click OK, your changes are applied and the dialog box is closed.When you click Apply, your changes are applied but the dialog box remainsopen so that you can make further changes.

All sectors at the site are now tagged as being On_Air. To change the status ofall the sites in the Downtown group in a similar fashion would be very timeconsuming. Using the Tabular Editor, you can apply flags and conditionsquickly to a group of sites.

8 Expand the Groups node, and then expand the Shared node.

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The numbers displayed after the Downtown_UMTS group name (13/13/39/0)indicate the number of sites, base stations, sectors, and repeaters in thegroup.

9 Right-click the Downtown_UMTS group and choose Tabular Editor.

10 In the Tabular Editor, click the Sectors tab.

Notice that the rows for site C2750 in the Flag: Status column are alreadytagged as On_Air.

11 In the Flag: Status column, click in the first field and from the listchoose On_Air.

12 On the toolbar, click the Copy To Clipboard button .

13 Click the Flag: Status column heading to select all rows.

14 Click the Paste From Clipboard button .

The On_Air flag is copied to all sectors in the Downtown group.

15 Click OK to apply your changes.

All sites in the Downtown_UMTS group are now tagged as being on air.

16 In the Project Explorer, in the Sites category, expand the Flagsnode.

17 Expand the Status node and enable the On_Air check box.

18 To view all sites tagged as on air, right-click the Flags node and chooseView.

All sites that are on air are displayed in the Map window.



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Assigning a propagation model

In order to model a network that is as close to the real-world network as possible,you need to calibrate the propagation model using survey measurements.

Once you have calibrated the model, you can associate the model to other sites thatshare the same type of environment, provided that the model is not overlydependent on calibrations (empirical models generally rely heavily on calibrations).

In this lesson, you will assign a tuned Planet General Model to all sites in theDowntown_UMTS group.

To assign the tuned model


2 In the Project Explorer, in the Sites category, expand the Groupsnode, and expand the Shared node.

3 Right-click the Downtown_UMTS group and open the Tabular Editor.

4 In the Tabular Editor, click the Sectors tab.

5 In the Propagation Model column, change the value for all rows fromdefault_PlanetGeneralModel.pmf to Urban_PGM_Ottawa_1900.pmf.

6 Click OK to apply your changes.

7 To see how tuning the model affects predictions, right-click the C2750site in the Downtown_UMTS group and generate predictions.

8 View the CPICH prediction in the Map window.

9 Remove the prediction from the Map window.



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Importing network data

Network data is data collected from wireless network switching equipment. Itcontains information about network configuration and performance. You use theNetwork Data Import Wizard to bind network data to Mentum Planet data. The boundnetwork data can then be used in Mentum Planet in traffic maps, interferencematrices, neighbor plans, frequency planning, and for display purposes.

In this lesson, you will import and bind network data that you will later use to create atraffic map.

To import network data


2 In the Project Explorer, in the Operational Data category, right-clickthe Network Data node and choose New.

The Network Data Import Wizard opens.

3 Read the introduction and click Next.

4 Choose the Microsoft Excel option, browse to the Attachments\Sharedfolder within the tutorial dataset, select the Network_data_umts.xls file,and then click Open.

5 In theWizard, click Next.

6 To bind the network data to the Mentum Planet project, do thefollowing:

n Choose the Bind To SiteID/Sector ID option

n In the Site ID column, from the list, choose Site ID. The indicatorturns green to confirm that your selection is valid.

n In the Sector ID column, from the list, choose Sector ID.

Leave the Traffic column unbound.

7 Click Finish.

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The Report Preview dialog box opens where you can review traffic data.

8 Click the Traffic heading to select the column.

9 Click the Generate Sector Display Scheme button.

10 In the New Sector Display Scheme dialog box, type TrafficCountsand click OK.

11 In the Sector Display Scheme dialog box, click the Color tab.

12 Choose the Based On Property option and, from the associated list,choose Traffic.

13 Click Add and, in the Add Value dialog box, type 4 and click OK.

14 Click the color swatch next to a value so that each value uses a uniquecolor.

15 Click Apply to display sector symbols using color to identify trafficvalues.

16 Click OK and then, in the Report Preview dialog box, click Close.

17 To remove the sector display scheme, in the Project Explorercategory, in the Sites category, right-click the Sites node and chooseSector Display Scheme Apply.

18 In the Select Scheme dialog box, choose None and click Apply.




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Creating a traffic map

Traffic maps provide data about the geographical distribution of subscriber traffic in anetwork and are key to creating an accurate model of network performance. By usingwell-crafted traffic maps, you ensure that with your network design, service isavailable in the areas where it is most needed.

You can base the traffic map on various data sources including regions, vectors,classified grid, or network data. And, in order to ensure the traffic map is as realisticas possible, you can define a weighting value to the input data that represents howmuch traffic to model.

In this lesson, you will create a traffic map using the imported network data.

To create a traffic map


2 In the Project Explorer, in the Project Data category, right-click theTraffic Maps node and choose New.

3 In the Name box, type Ott_Traffic.

4 In the Data Source section, choose the Network Data option.

5 In theWeighting section, choose None.

6 In the Unit section, change the Input Data Unit to Subscribers andthe Output Data Unit to Subscribers/km2.

7 Click Next.

The Traffic Data page displays with the Network Data selections already made.

8 In the Traffic Spreading Algorithm section, choose the SectorService Probabilities option.

9 Click Next.

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10 On the Traffic Spreading Algorithm page, in the Selection Optionssection, choose Group Selection and ensure the Downtown_UMTSgroup is selected.

11 Click Finish.

12 When traffic map generation is complete, click Close.

The new traffic map is added beneath the Traffic Maps node.

13 To display the traffic map, in the Project Data category, expand theTraffic Maps node and double-click the Ott_Traffic file.

When you double-click an item in the Project Explorer, the default action iscarried out. A default action is displayed in bold on the Project Explorershortcut menu. In this case, the default action is View and so the traffic mapdisplays in the Map window. Use the Grid Legend command from the Viewmenu to display the map legend.

14 Choose GIS Close Table to remove the traffic map layer from theMap window.




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Editing subscribers

The characteristics of subscribers are defined using the nodes in the SubscriberSettings dialog box. The nodes within the Subscriber Settings dialog box representbuilding blocks for subscriber types: Equipment Types, Services, and SubscriberTypes. You can create a diverse mix of subscribers by defining different services,quality types, and user equipment types and assigning them to subscriber types.

Subscriber types are used with Monte Carlo simulations. Nominal analyses onlyrequire the definition of equipment types.

In this lesson, you will modify subscriber settings to use the traffic map you createdin the previous lesson.

To edit subscribers


2 InMentum Planet, do one of the following:

n Choose Edit Subscriber Settings.

n Click the Subscriber Settings button on the toolbar.

3 In the Subscriber Settings dialog box, expand the Equipment Typesnode, and choose WCDMA - UE.

4 Click the Hardware tab and, in the Maximum Transmit Power box,type 22 dBm.

5 Expand the Subscriber Types node and choose WCDMA SubscriberType_1.

6 Click the Configuration tab and from the Traffic Map list, choose Ott_Traffic.

7 Click OK.


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Generating and viewing a network analysis

In Mentum Planet, you can generate an analysis with nothing more than theequipment type defined in the subscriber settings. This decreases the time requiredto prepare for network analysis and results in less time being required to generatethe analysis layers; however, this type of analysis does not generate detailedsubscriber information. The analysis runs only once and generates analysis layersautomatically.

In this lesson, you will learn how to define default layer settings, generate threelayers, and view layers side by side.

To generate a network analysis


2 In the Project Explorer, in the Network Analyses category, right-click theWCDMA Analyses node, and choose Default Layers.

By defining default layers, you can save time if you always generate the samelayers.

3 In theWCDMA Analysis Layers dialog box, click the top-level node toclear all check boxes.

4 Expand the Per-Carrier node, enable the following check boxes andclick OK.

n CPICH Best Server

n CPICH Composite Best Server

n CPICH Number of Polluters

5 Right-click theWCDMA Analyses node and choose New.

6 In the Name box, type Ott and click Next.

7 On the Sector Selection page, choose the Group Selection optionand select the Downtown_UMTS (Shared) group.

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8 Click Next and, on the following pages of the wizard, accept the defaultsettings until you come to the Analysis page.

9 At the bottom of the page, enable the Generate CPICH PollutionIndex Layer check box and click Next.

10 In the Analysis Area section, choose the Use An Area Grid optionand, from the list, choose Downtown.

Using an area grid you can focus an analysis on a specific area. In this way,you can reduce the time required to generate outputs.

11 Click Next until the Final Step page of the Wizard displays and ensurethe Save Settings And Generate Output option is selected.

12 Click Finish.

13 When layer generation is complete, click Close.

To view a network analysis

1 If the MapInfo Sync Windows toolbar is not visible, choose GISTools Tool Manager, and enable the Sync Windows check boxes.

2 On the Sync Windows toolbar, do the following:

n Click the Clone Map Window button.

n Click the Tile Windows button.

n Click the Sync All Map Windows button and , in theSynchronize Map Windows dialog box, enable the AlwaysSynchronize Map Windows check box and click OK.

For more information about the Sync Windows feature, see the MapInfoProfessional online Help or PDFs. MapInfo Help is not part of the Mentum PlanetHelp and must be searched separately.

3 In the Project Explorer, in the Network Analysis category, expandtheWCDMA Analyses node, expand the Ott node until it is fully

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expanded, and right-click the CPICH - Best Server layer and chooseView.

4 Click the second Map window to make it active and view the CPICH -Number of Polluters layer.

5 On the Main toolbar, use any of the following tools to examine thelayers:

n Zoom In

n Zoom Out

n Grabber

For more information about these tools, choose Help Help Topics MapInfo.

6 After you have examined both layers, in the Project Explorer, in theNetwork Analyses category, right-click the CPICH Best Server layerand choose Close.

The CPICH - Number of Polluters layer should still be displayed.




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Identifying sectors causing CPICH pollution

Using the CPICH Pollution Inspector, you can identify polluting sectors at specificlocations, modify the appropriate sector settings, and then view the effect of yourchanges. The level of CPICH signal pollution is analyzed by comparing the powers ofthe CPICH channels with the power of the best serving CPICH channel, taking intoaccount the active set (i.e., the set of CPICH signals currently participating in thecall) and the CPICH pollution threshold.

To identify sectors causing CPICH pollution


2 With the CPICH - Number of Polluters layer displayed, choose AnalysisCPICH Pollution Inspector.

3 In the Sector Selection dialog box, in the Selection Options section,choose the Group Selection option and ensure Downtown_UMTS(Shared) is selected.

4 Click OK.

5 Click in the Map window at a location where pollution exists as indicatedby the colored bins.

The CPICH Pollution Inspector dialog box updates to show the best server, softhandover sectors, and polluting sectors. The red horizontal line in the graphwindow indicates the thresholds for the best-serving and polluting sectors.

6 When you have finished examining the CPICH pollution layer, close theCPICH Pollution Inspector.

7 In the Project Explorer, in the Network Analyses category, right-click the CPICH - Number Of Pollutors layer and choose Remove.

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Generating a Monte Carlo simulation

A Monte Carlo analysis uses Monte Carlo simulation techniques to determine thecharacteristics of the network over repeated runs. A run consists of the distribution ofrandom numbers of subscribers throughout the simulation area in a random pattern,and an analysis of the uplink and downlink. On the last run, operating points anddiscrete subscriber information are generated. Once the runs are completed, you canview the results including detailed reports, discrete subscriber information, and anoptional service layer generated after the Monte Carlo simulation. Monte Carlosimulation results provide you with detailed sector loadings that you can apply tocells. You could then create a network analysis in order to generate accurate networkanalysis layers based on the Monte Carlo simulation results.

In this lesson, you will create a Monte Carlo simulation and review the Sector/Carrierreport.

TIP: When working with Mentum Planet, press F1 from any dialog box to open theonline Help.

To generate a Monte Carlo simulation


2 In the Project Explorer, in the Monte Carlo Simulations category,right-clickWCDMA Simulations and choose New.

3 On the first page of the wizard, in the Name box, type Ott_DowntownMC and click Next.

4 On the Sector Selection page, in the Selections Options section,choose the Group Selection option and ensure the Downtown_UMTS(Shared) group is displayed.

5 Click Next.

6 On the System page, accept the defaults and click Next.

7 On the Analysis page, accept the defaults and click Next.

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8 On the Monte Carlo page, click Next.

9 On the Simulation Area page, choose the Use An Area Grid optionand ensure the Downtown grid is selected.

10 Click Next.

11 On the last page of the Wizard, ensure the Save Settings AndGenerate Output option is selected, and click Finish.

12 When the simulation is complete, review simulation results, and clickClose.

13 Right-click the Ott_DowntownMC simulation and choose GenerateReports Sector/Carrier.

14 Review report details and click Close.




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Generating layer statistics

Layer statistics can provide useful insight into the behavior of the network.

In this lesson, you will generate layer statistics for the best server layer and display abar graph of the results.

To generate layer statistics


2 In the Project Explorer, in the Network Analyses category, expandtheWCDMA Analyses node, the Ott node, as well as the UMTS_2100_1 node, then right-click the CPICH - Best Server layer and chooseStatistics.

3 In the Layer Statistics dialog box, on the Analysis Settings pane,from the Analysis Area list, choose Downtown.

4 Click Calculate Statistics.

The Report Preview dialog box opens where you can review layer statistics.

5 CTRL+Click the following column headings to select them:

n Sector

n Percentage Total Area

6 Click the Show Graph button.

The Graph window opens with information displayed in a bar chart. You canchange the chart type to Lines or Points.

7 To narrow the focus of the graph, in the Show Top Elements box, type5.

8 Close the Graph, Report Preview, and Layer Statistics dialog boxes.


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33

Creating and applying neighbor plans

In order to design a wireless network where users can move between sectorssmoothly with no interruption of service, you need to understand how sites influenceeach other and how they can better interact with each other. To do this, you create aneighbor plan that encompasses sector neighbor lists and using this information, youcan determine the best handover strategy for the network and make appropriatedecisions about network design. Neighbor relationship management in MentumPlanet encompasses the following basic elements: neighbor lists and black lists,which are defined at the sector level, and neighbor plans, which are defined at thenetwork level.

In this lesson, you will create a neighbor plan and apply it to the Downtown_UMTSgroup.

To create a neighbor plan


2 In the RF Tools category, right-click the Neighbor Plans node andchoose New.

3 On the Name, Description, And Sectors page, in the Name box,type DowntownNP.

4 In the Sector Selection section, choose the Group Selection optionand ensure the list displays the Downtown_UMTS group.

5 Click Next.

6 On the Neighbor Plan Type And Algorithm page, in the Algorithmsection, choose the Best Server option, click Next.

7 On the Carrier Selection page, click Next.

8 On the Algorithm Parameters page, from the Best Serving SectorLayer list, choose Ott_CPCoBSvr_UMTS, and click Finish.

9 When the neighbor planning process is complete, click Close.

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The new neighbor plan is added to the Neighbor Plans node in the ProjectExplorer.

10 To apply the new neighbor plan to sites in the Downtown_UMTS group,in the RF Tools category, right-click the neighbor plan you just created,and choose Apply Replace.

11 In the Sites category, double-click site C2750 to open the Site Editor.

12 In the tree view, choose the carrier assigned to sector 4 and click theNeighbor List tab to view neighbors.

13 Click the View In Map button to display neighbor relationships in theMap window.

14 Close the Site Editor.

15 To remove the neighbor list display, in theWindows category of theProject Explorer, expand all nodes, right-click the NeighborList_SectorRelations layer and choose Remove.




35

Creating an Interference Matrix

A histogram interference matrix is generated on-the-fly based on predictions. Eachinterference matrix consists of histograms of C/I. There is one C/I histogram for eachserver-interferer pair and each histogram represents the distribution of C/I betweena server/interferer pair if they were assigned the same carrier.

In this lesson, you will create a histogram interference matrix.

To create an interference matrix


2 In the Project Explorer, in the RF Tools category, right-click theInterference Matrices node and choose New Downlink.

3 In the Sector Selection dialog box, choose the Downtown_UMTSgroup, and click OK.

4 In the Generate A Downlink Histogram Interference Matrix dialogbox, in the tree view, choose Calculation.

5 In the Name box, type NewDowntownIM.

6 In the Traffic section, enable the Use A Traffic Map, and choose Ott_Traffic.

7 Click Generate, and once generation is complete, close the dialog box.

8 In the Project Explorer, in the RF Tools category, expand theInterference Matrices node.

9 Right-click the NewDowntownIM and choose View.

10 Review histogram interference matrix details and when you arefinished, click Close.


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37

Planning scrambling codes

Using the Scrambling Code Planning tool, you can allocate scrambling codesautomatically based on distance or interference. When you create a scrambling codeplan, each sector is assigned a scrambling code. The scrambling code is made up of agroup code, which is the primary scrambling code, and a secondary code. There are512 primary scrambling codes available for each carrier. For each primary code, thereare 15 secondary codes.

Before planning scrambling codes, you must define the scrambling code exceptionsand triplets in the network settings.

To plan scrambling codes

1 On the Network toolbar, click the Network Settings button.

2 In the tree view, expand the Network Technologies node, and chooseWCDMA.

3 Click the Scrambling Code Exceptions tab.

4 Scroll to the bottom of the list and enable the check boxes for all codesin rows 62, 63, and 64.

5 Click the Scrambling Code Triplets tab.

6 Click Create.

7 In the Create Scrambling Code Regions And Triplets, in the Stepbox, type 8 and click OK.

8 In the Network Settings dialog box, click OK.

9 Choose Optimization Scrambling Code Planning.

10 In the Scrambling Code Planning dialog box, on the General tab, inthe Plan Name box, type DowtownOtt.

11 From the Group To Plan list, choose Downtown_UMTS.

12 From the Group To Consider list, choose All_sites_UMTS.

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The group to consider should encompasses more sectors than the group toplan.

13 In the Planning Strategy section, choose the Group option.

14 In the Interference Matrix section, ensure the NewDowntownIM isselected.

15 Enable the Neighbor Plan check box and choose the DowntownNP.

16 From the Carrier list, choose UMTS_2100_1.

17 Click Generate.

18 When plan generation is complete, click Save.

19 Click Close.

To apply a scrambling code plan

1 In the RF Tools category, expand the Scrambling Code Plans node,right-click the DowntownOtt plan and choose Apply.

2 In the Network Update dialog box, click Yes to update the network.

To view reuse patterns

1 Choose Tools Carrier And Code Display WCDMA.

2 In the Sector Selection dialog box, choose the Group Selectionoption, and from the associated list, choose Downtown_UMTS.

3 Click OK.

4 In the Carrier And Scrambling Code Display dialog box, do thefollowing:

n In the Mode section, choose the All Selected Sectors option.

n In the View section, choose the Scrambling Code option.

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n Enable the check boxes next to the 144, 152, and 160 Physical CellIDs

5 Click View.

The sectors using these PCIDs are displayed in red.

6 Click Close

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Placing sites automatically

Using the Automatic Site Placement Tool (ASPT), you can place sites in a definedarea quickly and easily. There are two modes that you can use with the ASPT:

n Basic—the tool generates hexagons based on the criteria you defineand places a site at the center of each hexagon using either thedefault site configuration or the site template you specify. If you areusing a clutter file, you can exclude clutter classes such that no siteswill be placed within them.

n Advanced —the tool generates complex shapes based on theplanning strategy you choose and the criteria you define (includingclutter-specific criteria) and places a site at the center of the shapeusing the site template you specify. Each site is given a level ofpriority that determines whether it becomes a possible sitecandidate. In Advanced mode, you can use a traffic map in order togenerate more accurate shapes. In addition, you can use existingand candidate sites in the site placement process.

In this lesson, you will use the Advanced ASPT option to place sites automatically.

To place sites automatically

1 Choose Optimization Automatic Site Placement.

2 In the Automatic Site Placement dialog box, on the General tab, dothe following:

n Choose the Advanced option.

n In the Region section, choose the Area option and ensureCoreCluster_Area is selected.

3 Click the Site Templates tab.

4 For the Seawater class, in the Place Site column, choose Never fromthe list.

5 Click Generate.

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Ten new sites are proposed.

6 Click Create Sites.

7 Click Close.



n If you want to stop here, choose File Close Project, click Yesto confirm you want to close the project and Yes to confirm youwant to save the project.

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Optimizing a single site

When you make changes to sector settings and want to understand the impact thesechanges have, you can optimize a single site and view coverage and interferencelayers (i.e., the best server signal strength layer and the C/(N+I) layer).

In single site optimization, predictions are generated along radials that span 170degrees (ignoring the antenna backlobe). Points spread along the radials are thenoptimized using the defined criteria and layers are generated.

In this lesson, you will optimize a site.

To optimize a single site


2 In the Project Explorer, in the Sites category, expand the Sites node.

3 Click the Sites node.

A filter box is displayed.

4 In the box, type Site.

Only the newly generated sites are displayed.

5 Expand the Site_1 site.

6 Right-click the WCDMA base station and choose Optimize.

7 In the Sector Selection, accept the default values, and click Select.

8 In the Site Optimization Tool dialog box, on the General tab, enablethe Use A Traffic Map check box and, from the associated list, chooseOtt_Traffic.

9 Click the Optimization tab.

10 Choose the Use Generic Goals option.

11 Clear the Optimize CPICH Ec Coverage check box.

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12 Enable the Optimize Interference check box and choose theOptimize Ec/Io option.

13 In the CPICH Ec/Io Threshold box, type -12 dB.

14 Click Optimize.

15 When the optimization is complete, click Apply and then click Close.

16 In the Sites category, open Site_1 in the Site Editor.

17 In the tree view, select sector 1.

18 Click the Link tab and click Edit next to the Antenna list.

The General tab displays with an updated azimuth value.

19 Close the Site Editor.

This is the end of the tutorial. If you are interested in more advanced training,see http://www.mentum.com/index.php?page=education&hl=en_US for moreinformation on the courses offered.

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wcdma tutorial for mentum planet 5.3.1

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