Cel Optima
-
Upload
bless-mkhize -
Category
Documents
-
view
245 -
download
0
Transcript of Cel Optima
-
7/29/2019 Cel Optima
1/176
Series 4
CelOptima User Guide
-
7/29/2019 Cel Optima
2/176
CelPlan Wireless Global Technologies
CelOptima 4.6Software for Optimization of Wireless Systems
Proprietary and Confidential
-
7/29/2019 Cel Optima
3/176
CelOptima4.6 Users Guide
Preface
CelOptima aids wireless designers, engineers, and operators in the comprehensive
analysis and optimization of wireless systems. With CelOptima, users can perform themost intricate, detailed optimizations for the most complex wireless systems, including
the convergence of traditional mobile, 3-G (voice/data/image/multimedia), and
broadband, fixed wireless systems.
CelOptima allows users to save significant amounts of time and avoid continuous systemadjustments. As an optimization tool, CelOptima can double the traffic capacity of a
wireless system and, at the same time, improve system performance. For rapid and
reliable wireless optimization, CelOptima allows users to: (1) make better use ofspectrum, (2) increase quality of service, (2) reduce capital investment, and (4) reduce
operational expenditures.
Handoff thresholds and frequency plan for the most complex wireless systems can be
automatically maximized. Applying the proprietary OPTIMA algorithm, CelOptima
gives the best solution in the shortest time, so that users can perform an unlimited number
of what if scenarios.
CelOptima first assembles a unique interrelation matrix among all radios by using a
proprietary algorithm, MATRIX. The software assesses the influence of all systemservers at each point in the system, and then weights this influence with a traffic factor,
derived from a special raster traffic layer created from demographics or switch data. The
MATRIX data form the basis for calculation of ideal handoff levels where handoff
requests are minimized and the desired number of handoffs is preserved.
Using the OPTIMA algorithm, frequencies are assigned to the RF channels in such a waythat overall interference is minimized. Geographic traffic distribution can be factored
into the optimization solution, so that any potential interference is restricted to areas with
the least traffic.
In addition to working with existing plans, CelOptima software can be adjusted for any
proposed modifications, including the increase or reduction of channels. WithCelOptima, users can prioritize certain areas and/or restrict the use of certain frequenciesat given sites. CelOptima also gives users the ability to optimize codes, polarities, and
hopping sequence allocations.
CelOptima allows users to optimize sequentially. For example, after completing a
frequency optimization, users can assign the first level of codes (e.g., DSAT) based on
the initial frequency assignments and then overlay this with a second level of code
assignment (e.g., DCC), and so on.
Rev. 04/2001 1-1
-
7/29/2019 Cel Optima
4/176
CelOptima4.6 Users Guide
CelOptima is well suited to the optimization of CDMA systems. Optimized offsets are
determined by incorporating relative signal strengths at each point, the distance betweencompeting sites, and the offset window in use. CelOptima delivers precise results.
Partial Features List
Model upstream and downstream. CelOptima is the only tool on the
market that allows designers to model both upstream and downstream.
Variable reuse pattern. Wireless systems today can accommodate
extremely small space between channels, allowing for tight reuse.CelOptima can be programmed to allocate frequencies according togroups or by using a minimum distance. Whereas, with other tools,
designers are restricted to fixed reuse sequences, CelOptima offers a
variable reuse pattern to optimize spectrum usage.
All-network applications. CelOptima can be applied to AMPS, TDMA,GSM, or CDMA networks, as well as to the planning of 3-G systems and
broadband wireless systems. It is ideal for resolving issues that arise intransitioning from one technology to another, as well as problems of
mixed systems.
Analysis of complex interference. Todays complex cellular systemsmake interference analysis much more difficult. A call at a given location
can be either good or bad, depending on the channel to which the call was
assigned. By using CelScore, a proprietary set of algorithms, CelOptimadisplays the percentage of calls at each point below a given performance
threshold. A geographic display pinpoints areas of interference.
CelScore also lets users evaluate the amount of traffic present at eachlocation and verify the number of mini Erlangs falling below a specified
threshold. Users can instantly correct interference in key areas and verify
immediately the results of a proposed solution.
By assigning a unique score to each frequency plan, CelOptima facilitates
comparison of different solutions. This numerical information is
extremely valuable in evaluating the plan as a whole and in comparing itwith other solutions.
Objective performance comparison. With CelOptima, CelPlan hasdeveloped a unique, effective approach to grading systems against
specified performance levels or against other systems. Using the
CelGrade algorithm, CelOptima generates a grade from 0 to 10 for each
system 5 representing an acceptable performance, 10 an excellent one.
Rev. 04/2001 1-2
-
7/29/2019 Cel Optima
5/176
CelOptima4.6 Users Guide
Simultaneous display of multiple screens. CelOptima creates a
workspace region on-screen with multiple windows that can besimultaneously displayed so that users can view several layers of a
particular system. For instance, the workspace screen can simultaneously
display four sub-windows, one depicting morphology, another displayingtopology, still another showing map features, and another depicting
prediction simulations. Movement of the cursor within each sub-window
is synchronized with the movement of the cursor in each of the other sub-windows displayed.
Rev. 04/2001 1-3
-
7/29/2019 Cel Optima
6/176
CelOptima4.6 Users Guide
Table of Contents
CCHHAAPPTTEERR11...............................................................................................................1-2Basic Operation .....................................................................................................1-2
1.0 Understanding CelOptima...................................................................................1-2
1.1 Basic Description of CelOptima...........................................................................1-2
1.2 Getting Started .....................................................................................................1-4
1.3 Opening and Saving Project Files........................................................................1-6
1.4 Setting-up and Loading Root Directories..........................................................1-11
1.5 Relational Database............................................................................................1-16
CCHHAAPPTTEERR22...............................................................................................................2-2Optimization Menu (CelOptima)............................................................................2-2
2.0 Introduction..........................................................................................................2-2
2.1 Configuration Tab................................................................................................2-32.1.1 Directories Subtab.........................................................................................2-3
2.1.2 Input Files Subtab .........................................................................................2-42.1.3 System Parameters Subtab.............................................................................2-6
System Parameters Subtab for GSM .............................................................2-9
2.2 Neighborhood & Handoff Tab...........................................................................2-11
2.3 Matrix Tab..........................................................................................................2-142.3.1 Execute Subtab............................................................................................2-14
2.3.2 Combine Subtab..........................................................................................2-17
2.4 Planning Tab ......................................................................................................2-192.4.1 Penalties Subtab..........................................................................................2-192.4.2 Carriers Subtab............................................................................................2-21
2.4.3 Carrier Plan Subtab .....................................................................................2-242.4.4 Code Plan Subtab ........................................................................................2-26
AMPS/TDMA Systems ..............................................................................2-27CDMA Systems..........................................................................................2-27
GSM Systems.............................................................................................2-27Description of Fields within Code Plan Subtab ...........................................2-27
2.4.5 Performance Subtab ....................................................................................2-29
2.5 Tools Tab ............................................................................................................2-322.5.1 Export Subtab..............................................................................................2-322.5.2 Import Subtab..............................................................................................2-33
Rev. 04/2001 1-1
-
7/29/2019 Cel Optima
7/176
CelOptima4.6 Users Guide
CCHHAAPPTTEERR33...............................................................................................................3-2Presentation (CelView)...........................................................................................3-2
3.0 Introduction..........................................................................................................3-23.1 Views.....................................................................................................................3-3
3.1.1 The Log Information Window (Show Log)....................................................3-63.1.2 Define Maximum Size...................................................................................3-7
3.1.3 Desktop.........................................................................................................3-83.1.4 Presentation...................................................................................................3-9
3.1.5 Directories.....................................................................................................3-93.1.6 Map Maneuver ............................................................................................3-11
3.1.7 Carriers Table..............................................................................................3-123.1.8 Geographic Profile ......................................................................................3-18
3.2 Presentation ........................................................................................................3-21
3.2.1 Cell Site Tab ...............................................................................................3-223.2.2 Layers Tab ..................................................................................................3-243.2.2.1 Background..............................................................................................3-26
3.2.2.2 Foreground...............................................................................................3-353.2.2.3 LOS (Line-of-Sight).................................................................................3-41
3.2.3 Colors Tab ..................................................................................................3-443.2.4 Prediction Tab.............................................................................................3-45
3.2.6 Overlay Tab ................................................................................................3-463.2.6.1 Region Tab...............................................................................................3-46
3.2.6.2 Vectors Tab..............................................................................................3-513.2.6.3 Measurement Tab.....................................................................................3-52
3.2.7 FCC Tab .....................................................................................................3-543.2.7.1 Display Tab..............................................................................................3-54
3.2.7.2 Single Tab................................................................................................3-583.2.7.3 Composite Tab .........................................................................................3-60
3.2.7.4 Filters Tab................................................................................................3-64
3.2.8 Db/Grid Tab ....................................................................................................3-67
CCHHAAPPTTEERR44...............................................................................................................4-2
Relational Database ...............................................................................................4-2
4.0 Introduction..........................................................................................................4-2
4.1 Relational Database..............................................................................................4-3
4.1.1 Editing Cell Site Parameters..........................................................................4-54.1.2 Database Querying ........................................................................................4-84.1.3 Replacing Multiple Data Fields ...................................................................4-11
4.1.4 Column Information.................................................................................... 4-12
4.2 Phases, Areas, and Flags ....................................................................................4-13
Rev. 04/2001 1-2
-
7/29/2019 Cel Optima
8/176
CelOptima4.6 Users Guide
CCHHAAPPTTEERR55...............................................................................................................5-2CelOptima File Formats.........................................................................................5-2
5.0 Neighbor List (.NBL)............................................................................................5-2
5.1 Sectors Blocked Channels (.SBLC)......................................................................5-45.2 Channel Distance Per Sector (.CDPS) .................................................................5-5
5.3 AFP External Interference Matrix (.GIM)..........................................................5-6
5.3.1 Calculation of the Interference Relations between Pairs of Sectors ................5-85.3 CDMA PN Offset Matrix (.GIM) ...................................................................5-10
5.4 Translated Frequencies File (.FTC)...................................................................5-12
5.5 Control Carriers per Sector (.CCPS) ................................................................5-12
CCHHAAPPTTEERR66...............................................................................................................6-2
Frequency Table ....................................................................................................6-2
6.0 Introduction..........................................................................................................6-2
6.1 Viewing Frequency Allocations ...........................................................................6-26.2 Editing a Frequency Table...................................................................................6-5
6.3 Blocking Carriers .................................................................................................6-7
CCHHAAPPTTEERR77...............................................................................................................7-2Predictions .............................................................................................................7-2
7.0 Introduction..........................................................................................................7-2
7.1 Running and Viewing Performance Predictions.................................................7-2
7.2 Adjacent Channel C/I...........................................................................................7-6
7.3 Co-Channel C/I.....................................................................................................7-7
7.4 Percentage of Time Outage Predictions ..............................................................7-7
7.5 Percentage of Traffic Outage Predictions ...........................................................7-8
CCHHAAPPTTEERR88...............................................................................................................8-2
8.0 Introduction..........................................................................................................8-2
8.1 Planning Frequency Hopping ..............................................................................8-2
8.2 GSM Tables ..........................................................................................................8-3
Rev. 04/2001 1-3
-
7/29/2019 Cel Optima
9/176
CelOptima4.6 Users Guide
CHAPTER 1...................................................................................................................... 2CHAPTER 1Basic Operation............................................................................................................... 2
1.0 Understanding CelOptima ............................................................................................ 2
1.1 Basic Description of CelOptima ................................................................................... 2
1.2 Getting Started .............................................................................................................. 4
1.3 Opening and Saving Project Files................................................................................. 61.4 Setting-up and Loading Root Directories ................................................................... 11
1.5 Relational Database .................................................................................................... 16
Rev. 04/2001 1-1
-
7/29/2019 Cel Optima
10/176
CelOptima4.6 Users Guide
CCHHAAPPTTEERR11
Basic Operation
1.0 Understanding CelOptima
Wireless cellular networks have experienced remarkable growth in service area andcapacity, presenting ever-increasing engineering challenges to operators and designers.
Among the various factors that influence and limit the quality of service (QoS) of anetwork is the restricted spectrum available, a valuable and somewhat scarce commodity
that has become of paramount importance in the performance of a cellular system.
As networks grow in capacity and cell density increases, the frequency planning, or more
broadly, the resource planning becomes critical to QoS. The complexity of the network
and the myriad of variables affecting performance make resource planning a formidablecomplex problem that cannot be efficiently tackled without computational aids.
CelOptima is a resource-planning tool designed to efficiently assist in the design and
optimization of cellular wireless networks, handling the complex task of analyzing allrelevant variables that affect the performance of the network from the frequencyspectrum perspective.
The tool supports both narrowband and broadband technologies for fixed and mobile
systems and is fully compatible with CelPlanner. The tool also supports GSM systems.
1.1 Basic Description of CelOptima
CelOptima is composed of five, main modules:
Configuration Module Neighborhood& Handoff Module Matrix Module
Planning Module Presentation Module (CelView)
The Configuration Module allows users to set CelOptima for the desired type of
network plan, defining planning parameters that will be used throughout the process.
Rev. 04/2001 1-2
-
7/29/2019 Cel Optima
11/176
CelOptima4.6 Users Guide
The Neighborhood & Handoff Module helps users to optimize handoff thresholdsbetween neighbor cells in mobile networks and calculates neighbors for fixed systems.
This module contains the options and settings used by CelOptima when calculating and
optimizing the thresholds.
The Matrix Module is the core ofCelOptima. The modules inputs are the site database
and single predictions for each site from CelPlanner. CelOptima then calculates the
Interference Matrix, or Relationship Matrix. This matrix contains the interference relationbetween every pair of cells in the system (i.e., how much co-channel and adjacent
channel interference each cell can potentially cause to every other cell in the system).
The Planning Module allows users to define the spectrum availability of a plan, as well
as defining other variables for how the plan can be designed. CelOptima can perform
group plans or channel plans, accepting global or cell-specific lock-down lists.
The Presentation Module (CelView) allows users to graphically display outputs createdby CelOptima. Multiple windows, called Views, can be opened and different outputs
can be displayed concurrently. In addition, various filters are available, allowing adetailed analysis of the different interference scenarios that may occur. The Presentation
Module is detailed in Chapter 3.
The main inputs to CelOptima are the site database of the network to be planned and the
single predictions for each site. The site database must be formatted according to the
CelPlan Project File format (.prj), and the single predictions must comply with the
CelPlannerformat.
Configuration Matrix. Prj file
Neighborhood
& Handoff
CelOptima
PlanningSingle
Predictions
Rev. 04/2001 1-3
-
7/29/2019 Cel Optima
12/176
CelOptima4.6 Users Guide
1.2 Getting Started
To start CelOptima, double-click the icon that was created on the Windows main
desktop during installation. Users can also start the program by selecting CelOptima onthe CelPlannerSuite Menu, under Programs on the Start Menu.
After launching the application, CelOptima opens the main screen, as displayed below:
Rev. 04/2001 1-4
-
7/29/2019 Cel Optima
13/176
CelOptima4.6 Users Guide
The main screen displays all the drop-down menu options and speed keys available. It
can be resized, if necessary, to fit a screen shared with other applications.
Speed Keys Lat/Lon FieldMorphology Field
Drop-down Menus Terrain Elevation Field
The table below describes the ten speed-keys available in CelOptima:
Key Name FunctionResize Resizes a View altering its scale, without increasing or decreasing the
area displayed. The View can be resized to a larger or smaller scale.
Zoom in Enlarges an area selected by the user.
Zoom out Reduces an area selected by the user.
Shown Entire Area Displays the entire area defined in the project file on a View.
Grabber Allows the user to grab the area displayed on a View and pan it
around.
New View Creates a new empty View. The new View will display the entire area
defined in the project file.
Copy View Creates a copy of a selected View.
Sub View Creates a new View containing a sub-area of an existing View. Theuser graphically selects the sub-area.
Profile Draws a path profile between any two points selected by the user. Theprofile is displayed on a pop-up window.
Abort Aborts the execution of any analysis being carried out by CelOptima.
Rev. 04/2001 1-5
-
7/29/2019 Cel Optima
14/176
CelOptima4.6 Users Guide
1.3 Opening and Saving Project Files
The Project Menu contains CelOptimas open and save functions. Users should be
aware that they can import input files from CelPlanner as well as opening orreopening project files within CelOptima. Whereas CelPlanner project files have a
.prj extension, CelOptima project files have a .pjo extension. Other file types are
NOT ACCEPTED by the software.
At the top of the Project Menu, the New Button allows users to create project fileswithin CelOptima without having to first open CelPlannerproject files. Users can
then input different parameter settings for different sets of project files.
Underneath the New Button, clicking the Open Button will act to open the followingdialog box for retrieving project files.
Users may select and open
one of the project files that
are displayed. In thisinstance, there is only one
file, Manhattan
LMDS.pjo.
The Reopen Button allows users to open project files previously opened within
CelOptima. With the functionality of the Reopen Button, users can have multiple
application project files easily at their disposal in user-designated locations within
their computer or network.
Rev. 04/2001 1-6
-
7/29/2019 Cel Optima
15/176
CelOptima4.6 Users Guide
To utilize the Reopen Button, under the Project Menu, scroll to the middle of themenu. Note that, by clicking on the Reopen Button, the software will automatically
display the files previously created by the user. In this particular instance, only one
project, Manhattan LMDS, has been created.
This procedure will prompt CelOptima to close the Project File and reopen it,
refreshing all the information it keeps in memory about that file. The Reopen featurealso allows users to open previously opened projects, whose names and paths are kept
in a memory list, as shown above.
Note that the top bar on the workspace will display the names of the files currently in
use by CelOptima. For example, in the following graphical display, note thatCelOptima has opened two files: 1) Manhattan LMDS.pjo and 2) Manhattan
LMDS.prj.
Loading Options allow users to implement simple, shortcut operations to retrieve a
particular desktop configuration containing user-defined, multiple Views or toretrieve the last previously loaded project files from CelPlanner. These options are
only available after a project file is opened. Recall that Views are sub-windows
within the application tool workspace area that allow users to capture presentation of
multiple, different terrain types and/or prediction simulations onto one screen. Forinstance, users can save a desktop combination ofViews. One View might contain
morphology presentation of the project service area, another topology, another a
Rev. 04/2001 1-7
-
7/29/2019 Cel Optima
16/176
CelOptima4.6 Users Guide
prediction, etc. For more information on Views, go to chapter 3, which describes
presentation ofViews in depth.
The Project Loading Options Dialog Box allows users to choose which type of action thesoftware should perform when loading settings files. Thereby, whenever a CelView
settings file is loaded, the software will: 1) load the last configuration of Views along
with the CelPlanner Project associated with it (load last Desktop saved option is
selected); 2) load only the last CelPlannerproject file opened (load last CelPlanner
Project used is selected); or 3) load only CelView settings (do nothing option is
selected). Ask for confirmation check boxes will then appear on screen to ask users
for confirmation before loading the selected item.
Loading options are not stored in the CelView setting file; they are global settings (saved
in registry) that apply across-the-board to all applications containing the CelView
module. For example, if a user chooses the load last Desktop saved option in CelToolsand then opens CelOptima, CelOptima will automatically use the same loading option
users set in CelTools.
Users can save a project directly from the Project Menu by clicking the Save Button.
Rev. 04/2001 1-8
-
7/29/2019 Cel Optima
17/176
CelOptima4.6 Users Guide
If users wish to save a project file with a different project file name or in a differentlocation, users can click the Save As Button. The following dialog box will appear in the
middle of the workspace.
Note that this is
the same dialogbox that appears
on screen aft
clicking the Open
Button.
er
Within the Project Menu, users can open CelPlannerproject files by clicking the
CelPlanner Project Button. This action will bring up a submenu (shown below).
Users then have options to Open, Reopen, Save, and Save As (rename or relocate)
CelPlannerproject files within CelOptima.
Rev. 04/2001 1-9
-
7/29/2019 Cel Optima
18/176
CelOptima4.6 Users Guide
Users also can launch CelOptima directly by opening project files without having to
first open the software tool. Users can perform this operation by simply double-clicking the project file name in Windows Explorer.
Whenever a Project File is opened, CelOptima scans the directories indicated in the file,validating the terrain databases and any, other files utilized/created by users during the
design phase. This information is always present in the Project File and may be changed
in CelOptima. However, changes made to these directories cannot be saved.
After the process is completed, the Directories window, shown below, may be closed.
CelOptima opens the Directories window during the validation process to provide visualfeedback of the directories being searched. This window can be opened at any time by
selecting View->Directories (Ctrl+D).
Directories can be added and/or changed through this window. Directories previously
defined are checked with a blue tick ( ). To change a directory, click on the sign on
the right side of the blue tick, double-click on the icon, and select a new directory.
Rev. 04/2001 1-10
-
7/29/2019 Cel Optima
19/176
CelOptima4.6 Users Guide
To add a label to this directory, double-click the icon and type the label name asdesired.
When finished with the changes, click on the Update Directories Information Button.
CelOptima will rescan all the directories and validate the new entries.
1.4 Setting-up and Loading Root Directories
CelOptima uses and manipulates several, different files simultaneously while performing
the various steps of resource planning.
To facilitate the organization of the data, CelPlan created a file structure, under which all
required files must reside. This structure is composed of an input and an output directory
chosen by the user and will have sub-directories named according to CelOptimarequirements.
The required organization is shown on the following page. The Root Directories can haveany name, but the subdirectories must follow the naming convention specified.
We recommend that each design have its own CelOptima directory tree. Either
CelOptima (recommended option) or the user can manually create a directory structure.
In either case, some of the input files need to be copied to the proper folders, as describedin Chapter 4.
Rev. 04/2001 1-11
-
7/29/2019 Cel Optima
20/176
CelOptima4.6 Users Guide
Note that the Output Folder contains five sets of folders: Blocked
Channels, Matrix, Neighbour, Performance, and Planning.
Note that the Matrix and Performance Folders contain four folders each:
Combined, Downstream, Upstream, and Downstream + Upstream
There are Traffic and Control Performance Files for each directionanalyzed.
A complete analysis will generate up to 54 Performance Files. Users need only analyze
the combined results and resort to other files to analyze specific issues.
Rev. 04/2001 1-12
-
7/29/2019 Cel Optima
21/176
CelOptima4.6 Users Guide
To automatically create a root directory, select the Optimization menu. CelOptima willdisplay the Automatic Planning & Optimization (a View 1 and a Presentation
windows will also be displayed; disregard them for this step). Click on the
Configuration Tab and then on the Directories Subtab. The following dialog box willappear.
Click on a Root Dir. Button to select an existing folder or type the path to the desireddirectory. After users click on a Root Dir: Button, CelOptima will display the following
Browse for Folder Dialog Box (shown on the next page) in which users can select files
to move into the directory tree.
Rev. 04/2001 1-13
-
7/29/2019 Cel Optima
22/176
CelOptima4.6 Users Guide
IMPORTANT: A Project File must be loaded before the root directory can be
configured. If a Project File is not loaded, CelOptima will display an error message
and will request that a valid file be loaded. The files available in the memory list can be
loaded by double-clicking on the file name, or a new project can be selected by clicking
on the Open New Project button.
Rev. 04/2001 1-14
-
7/29/2019 Cel Optima
23/176
CelOptima4.6 Users Guide
Alternatively, by selecting View->Directories, CelOptima will display the Directories
Window (shown on page 10). Users can also select files from this window. After a
directory has been selected or entered, click on the button to load the directory tree
information into memory.
If the selected folder does not contain a valid directory tree or, if the typed path does notexist (when using the Directories Subtab within the Configuration Window),
CelOptima will create the required folders, including the root directory.
If users choose to create the directory tree manually, select the root directory through the
Browse for Folder Window and click on the button to load the directory treeinformation into memory. After the root directory is loaded, the Directories Window can
be closed.
Note that the original Topography, Morphology, Images, and Individual and Composite
Files originate from and have the same directory structure created within CelPlanner.After using CelOptima, the user may choose to use different directories then the
directories originally specified for the project. CelOptima generates performance files.
Rev. 04/2001 1-15
-
7/29/2019 Cel Optima
24/176
CelOptima4.6 Users Guide
1.5 Relational Database
CelOptima allows users to view, manipulate, and make changes to the site database of a
Project File through the Relational Database feature.
The Relational Database feature is only available when a Project File is loaded intomemory (by opening it). As shown on the following page, to access the database, select
Project->CelPlanner Project->Relational Database.
CelOptima will open two windows: the Log Information Window and the Cell Sites
Database Window.
The Log Information window displays information about all tasks performed by
CelOptima. The log messages are always saved in ASCII files available to users for
future reference and troubleshooting. The log file has a .txt extension and follows a
naming convention, such as CelOptima log 01.txt, where the number corresponds to
different log sessions. This window can be closed at any time without affecting anyoperations performed by CelOptima; it can also be opened at any time by selecting View-
> Show Log (Ctrl+L).
Rev. 04/2001 1-16
-
7/29/2019 Cel Optima
25/176
CelOptima4.6 Users Guide
The Cell Sites Database Window displays all the sites in the Project File with their
respective parameters. The upper half of the window shows the site list while the lower
half shows details information about each sector of the site selected on the upper half.
CelOptima also allows users make changes to the Phases and Areas of a Project File. Toaccess the Phases and Areas Window, select Project->CelPlanner->Phases and Areas.
Rev. 04/2001 1-17
-
7/29/2019 Cel Optima
26/176
CelOptima4.6 Users Guide
Users can select/deselect
Areas and Phases in the
same manners asperformed in CelPlanner.
More details on the Relational Database are available in Chapter 4.
Rev. 04/2001 1-18
-
7/29/2019 Cel Optima
27/176
CelOptima4.6 Users Guide________________________________________________________________________
CHAPTER 2CHAPTER 2...................................................................................................................... 2Optimization Menu (CelOptima).................................................................................... 2
2.0 Introduction................................................................................................................. 2
2.1 Configuration Tab ...................................................................................................... 3
2.1.1 Directories Subtab.................................................................................................. 32.1.2 Input Files Subtab .................................................................................................. 3
2.1.3 System Parameters Subtab..................................................................................... 5
2.2 Neighborhood & Handoff Tab................................................................................. 11
2.3 Matrix Tab................................................................................................................. 142.3.1 Execute Subtab..................................................................................................... 14
2.3.2 Combine Subtab................................................................................................... 17
2.4 Planning Tab ............................................................................................................. 192.4.1 Penalties Subtab ................................................................................................... 19
2.4.2 Carriers Subtab..................................................................................................... 212.4.3 Carrier Plan Subtab .............................................................................................. 23
2.4.4 Code Plan Subtab................................................................................................. 25AMPS/TDMA Systems ............................................................................................ 26
CDMA Systems ........................................................................................................ 26GSM Systems............................................................................................................ 27
Description of Fields within Code Plan Subtab........................................................ 27
2.4.5 Performance Subtab ............................................................................................. 28
2.5 Tools Tab ................................................................................................................... 312.5.1 Export Subtab....................................................................................................... 31
2.5.2 Import Subtab....................................................................................................... 32
-
7/29/2019 Cel Optima
28/176
CelOptima4.6 Users Guide
CCHHAAPPTTEERR22
Optimization Menu (CelOptima)
2.0 Introduction
After clicking on the Optimization Menu, a new window, Automatic Planning andOptimization, will appear on screen (see below). The Optimization module is divided
into five tabs that ultimately deal with the optimization functions ofCelOptima that is
calculation of neighborhood and handoff for mobile cellular systems and creation of the
interference matrix and assignment of carriers for both fixed and mobile systems. Thecalculations and matrix are subsequently used for system planning and optimization
within the Optimization module. The tabs should be handled in sequential order fromleft to right. Except for the Neighborhood & Handoff Tab, each tab contains subtabsthat should also be examined and/or filled out from left to right. The presentation of the
tabs and subtabs in this chapter follows the order that the user should consider these
items. Also, discussion of the fields within each tab or subtab will be from top to bottom.
1
Sets of fields will be
discussed in categories
labeled by successivenumbers. Section 2.1.1
describes usage of the fields
in the Directories Subtabto the left.
Rev. 4/2001 2-2
-
7/29/2019 Cel Optima
29/176
CelOptima4.6 Users Guide
2.1 Configuration Tab
The Configuration Tab contains three subtabs:
Directories Input Files System Parameters
2.1.1 Directories Subtab
1.
Shown above in the introduction of this chapter, the Directories Subtab specifies thedirectory pathways for the input and output directories, which house the
handoff/hysteresis calculations and interference matrixes produced by the software.
CelOptima will automatically create a file structure for the input and output directoriesafter a user specifies the directory locations. A user can designate the location of the input
and output directories by either clicking the Input Root Dir: Button or the Output RootDir: Button and then selecting a directory from the browse for directory box that
subsequently pops up on screen. Alternatively, a user can type a directory path into eitherof the fields and then click the corresponding root button. If the typed directory does not
exist, CelOptima will prompt the user in a second pop-up window to create the directory.
2.1.2 Input Files Subtab
Rev. 4/2001 2-3
-
7/29/2019 Cel Optima
30/176
CelOptima4.6 Users Guide
Within the Input Files Subtab, a user can specify the source of the neighbor list and the
interference matrix (from current output or a previously created matrix by CelOptima)used for system planning and optimization. The figure below depicts the Input FileSubtab.
1
2
1.
For the neighbor list, a user can choose from three options:
A neighbor list created by CelPlanner A list created by CelOptima in the current session A user neighbor list created from a source other than CelOptima or a list
previously created by CelOptima in another session
For the last set of options, the user must specify the directory pathway for theneighbor list file by clicking on the from User Selection Option, clicking the
Neighbor List Button, and typing the directory pathway for the intended file. In this
instance, CelOptima expects files with the extension .nbl. For more information onthe file format, refer to item 5.0 in Chapter 5 of this manual.
2.
For choosing the source of the interference matrix, a user can select the matrix created byCelOptima (located in the current output directory afterCelOptima creates the matrix) or
opt to use a previously created matrix by CelOptima. For instance, a user may choose tolocate a matrix file in one directory/location as opposed to having the same matrix file inseveral, different directories. To avoid this redundancy, a user can click the Interf.
Rev. 4/2001 2-4
-
7/29/2019 Cel Optima
31/176
CelOptima4.6 Users Guide
Matrix File button and input the file pathway in the field provided. Another purpose
might be to choose matrixes created with different project setups (different siteparameters, for example) for analyzing various what if scenarios. Users should be
aware that CelOptima automatically overwrites a previously created file if a different file
name or location is not specified during a subsequent session.
2.1.3 System Parameters Subtab
In this subtab, users can specify the desired system availability that CelOptima will thenuse to calculate handoff/hysteresis for mobile systems and the interference matrix. The
software automatically customizes this subtab for broadband systems and GSM systems.
First, we will present the subtab as it appears for AMPS and TDMA systems, next, as itappears for LMDS/MMDS systems, and, finally, for GSM systems. Although each
section explains the subtab particular to a specific technology, all readers should read the
Rev. 4/2001 2-5
-
7/29/2019 Cel Optima
32/176
CelOptima4.6 Users Guide
description for AMPS and TDMA because the fields in this subtab occur for the other
systems. To avoid redundancy, repeated fields are only described once.
Systems Parameter Subtab for AMPS and TDMA
2
3
1.
In the Minimum Acceptable Carrier Availability Field at the top of the screen, the user
can designate the minimum percentage threshold of time availability for the cellular
system. CelPlan recommends using a 90% minimum availability standard. A specifiedavailability of 100% will intuitively increase the required resources and difficulty for
creating such a system. Likewise, a system with 80% availability will be easier to create.
2. In the Analysis Direction for Matrix and Prediction Section, users should specify
which direction is under study. Users can opt for upstream, downstream, or bothsimultaneously.
3. For upstream, users can choose to implement a Power Control Algorithm by selectingthe Power Control Available Field. The software considers power control for both
matrix generation and performance analysis. Users can also specify a Maximum Power
Control Range (in dB) in the adjacent field. The Power Control Range defines thedynamic range of the subscriber transmitter that is how many dB the CPE transmits
below a maximum transmit power.
Rev. 4/2001 2-6
-
7/29/2019 Cel Optima
33/176
CelOptima4.6 Users Guide
For mobile systems, the Target Field values represent maximum and minimum signal
levels between which the Power Control Algorithm tries to position the received signal. Ifthe required upstream transmit power is below the dynamic range, the software will use
the minimum power in the range, regardless of meeting the Target Field requirements.
The Target Received Power (TRP) used for Power Control in the LMDS/MMDS moduleis the Coverage Threshold Parameter, which is declared in the Matrix Tab.
When the Best Server from Downstream Analysis Option is checked, CelOptimaconsiders the upstream best server in the same manner as the downstream best server.
This option can be modified only for LMDS/MMDS systems. All other technologies use
this concept as a default, and, although the option is displayed on screen for othertechnologies, users will be unable to uncheck this field.
System Parameters Subtab for LLMS/MMDS
Rev. 4/2001 2-7
-
7/29/2019 Cel Optima
34/176
CelOptima4.6 Users Guide
1
2
3
1.
The Minimum Acceptable Carrier Availability Field is described in the previous
section. If users check the Use Traffic Load Factor per Sector Option, CelOptima willconsider sector load when generating both the upstream and downstream matrixes.
2.
The previous section describes this set of fields. However, for MMDS systems, users
should be aware that there are three components composing the downstream matrix:
DH/UH
Where:D - desired
U - undesired
H - home systemN - neighbor system
DH/UN
DN/UH
Rev. 4/2001 2-8
-
7/29/2019 Cel Optima
35/176
CelOptima4.6 Users Guide
The downstream matrix also considers neighbor traffic.
3.
Users can specify the source of the Polarization Plan that CelOptima will use to create
the interference matrix. Two choices are available. If a user selects the Use Project PlanOption,CelOptima will use the polarization scheme from the project files imported fromCelPlanner. Alternatively, a user can select the Prepare New Plan Option, which
overrides the current scheme and creates a new one, based on the interference matrix. Inaddition, for fixed wireless systems, users must select whether either the downstream or
the upstream signal direction is under study.
System Parameters Subtab for GSM
Described
Above.
1
1.
CelOptimas optimization module for GSM systems includes Frequency Hopping. This
option provides automatic suggestion for MAL (Mobile Allocation List), HSN (HoppingSequence Number), and MAIO (Mobile Allocation Index Offset) allocations. Users canperform multi-layered statistical analysis, including automatic gain considerations for
frequency diversity, interference diversity, discontinuous transmission, and fractional
loading. The planning procedure is the same with the addition of Frequency Hoppingsettings.
Rev. 4/2001 2-9
-
7/29/2019 Cel Optima
36/176
CelOptima4.6 Users Guide
Users should choose the Maximum Number of Channels per Frame (half or full rate)
and the Planning Method. If users choose to plan by selecting the Fractional LoadingOption, CelOptima will perform allocations on a sector-by-sector basis. By choosing the
Multiple Reuse Pattern (MRP) Option, CelOptima will perform allocations of
frequencies/MAL lists by transceiver layer.
The Discontinuous Transmissions Factor (DTX) represents the percentage of time that
a subscriber is actually using a traffic channel. This factor may be used for upstream,
downstream, or both directions. Users must analyze the deployed equipment beforeapplying this factor. Equipment vendors will let users know whether their equipment
supports this factor. In cases where the factor should not be used, type 1 in the
corresponding field which means that subscribers are using traffic channels 100% ofthe time.
Users must also set the Average Speed of Subscribers in km/h. This setting will affectthe effectiveness of frequency hopping in terms of fading relief.
To edit a GSM database, users can click on the Edit GSM Database MAL and
Resources Button at the bottom of the subtab. For a description of the GSM databasestructure, please go to chapter 8.
Rev. 4/2001 2-10
-
7/29/2019 Cel Optima
37/176
CelOptima4.6 Users Guide
2.2 Neighborhood & Handoff Tab
This tab deals with specifying parameters for consideration of neighbors by CelOptima.
In addition, for mobile cellular systems, this tab provides users with the ability to specify
Handoff and Hysteresis Threshold parameters as well as the signal direction under study.
6
5
4
3
2
1
1.
CelOptima provides two methodologies for considering neighbors. If users considerneighbors by percentage, CelOptima will use the designated percentage to calculate
which adjacent cell sites contain the threshold border area to qualify as neighbors for a
particular site. Users also can consider neighbors by maximum number (maximum of 12).
CelOptima runs Neighborhood and Matrix calculations independently. Thus, users mayrun neighborhood calculations without having to run matrix calculations. To obtainneighbor lists, users can use the Neighbor List File Button instead of re-running all
neighborhood calculations. This button will create a new neighbor list file using the
constraints specified in the Percentage and Max. Number Fields. The file will be storedin the Output Directory in the Neighbors Folder.
The remaining portions of this tab relate solely to mobile systems.
Rev. 4/2001 2-11
-
7/29/2019 Cel Optima
38/176
CelOptima4.6 Users Guide
2.
CelOptima considers a statistical best server selection per bin to treat situations with
multiple, qualified servers. Users can use the Best Server Detection Field to refine
neighbor list calculations. The value of this field determines the signal level differencefor which users want to consider the possibility of handoff. For example, if users set the
value at 4 dB, this means that the software will consider every server that reaches
adjacent bins with a difference of 4 dB or less as a neighbor, regardless of being a bestserver in that bin.
3.
Handoff Threshold and Handoff Hysteresis can be calculated either from a neighbor listprovided by CelPlanner or a list created by CelOptima (as specified in the
Configuration, Input Files Subtab). If a user chooses a neighbor list created byCelOptima, the software provides two ways to calculate Handoff Threshold and
Hysteresis:
By neighborhood By sector
If users select the per sector option for Handoff Threshold, users can specify the
standard deviation allowed for the calculation. A standard deviation of 1 has beenprovided as a default value because that value has proven to be best representative of
most, previous cases. Similarly, if a user selects the per sector option for Hysteresis,CelOptima allows for specification of a Hysteresis Threshold in decibels. A decibel level
of 5 dB is the default level.
CelPlan recommends calculating Handoff Threshold on a per sector basis and Handoff
Hysteresis on a per neighbor basis for most mobile systems.
4.
In the section labeled Existent Handoff Parameters refer to, users can select which
direction (downstream or upstream) is under study for a fixed system.
5.
The bottom section of the Neighborhood & Threshold Tab allows users to save theHandoff Thresholds and Handoff Hysteresis calculations to corresponding CelPlanner
Project files. Upon the completion of calculations, users may want to implement these
features after several iterations of calculations or after the best values for the system have
Rev. 4/2001 2-12
-
7/29/2019 Cel Optima
39/176
CelOptima4.6 Users Guide
been calculated. If the Save Handoff Thresholds to CelPlanner Box is not checked, the
results will be saved in cache memory, and a user has the option to export these results ata later point in time as explained in item 2.5.1 of this chapter.
6.
Finally, clicking the Execute Neighborhood & Handoff Calculations Button will
prompt CelOptima to start creating the neighborhood file (if specified to do so) and
calculating Handoff Threshold and Handoff Hysteresis for the system.
Rev. 4/2001 2-13
-
7/29/2019 Cel Optima
40/176
CelOptima4.6 Users Guide
2.3 Matrix Tab
The Matrix Tab contains two subtabs:
Execute Subtab Combine Subtab
2.3.1 Execute Subtab
The Execute Subtab contains fields for specifying matrix prediction parameters.
4
3
2
1
1.
In the uppermost section of the Execute Subtab, users can specify parameters for matrix
resolution, subscriber connectivity, coverage threshold, and interference threshold.
The Resolution Field provides a range of choices for specifying the distance between the
points calculated in the matrix. Users can select resolutions from .1 to 25 seconds. Choice
of resolution will be affected by the resolution of the available terrain databases importedfrom CelPlanner. If traffic data is being used, the resolution should match the resolution
of the raster traffic files.
Rev. 4/2001 2-14
-
7/29/2019 Cel Optima
41/176
CelOptima4.6 Users Guide
The Connectivity Field provides a parameter to define the average mobility (for mobile
systems) of subscribers within a particular system to account for load distribution amongservers. For instance, if the cellular system mainly covers highway areas, the connectivity
parameter should be increased to account for the movement of most subscribers within
that system. Alternatively, for fixed cellular systems, the parameter accommodates
service variability.
The Coverage Field allows users to specify the minimum signal strength that CelOptima
will consider as a valid server. Below this coverage threshold (i.e., 115 dBm in thiscase), CelOptima will not consider a signal as a valid server.
The Interference Field allows an operator to specify a minimum value for interference.CelOptima will consider all calculated interference values above this user-defined
parameter as interference points in the matrix.
2.
Located below the matrix prediction parameters is the User Traffic Data Box. A user
should always check this box if traffic data is available for a particular project.CelOptima will then use the existing traffic data for calculating the matrix points.
In the middle of the Execute Subtab, the Use Priority Regions Box allows users toprioritize certain regions within a cellular system for calculation of the interference
matrix. For instance, highly populated, urban regions can be prioritized over less
populated areas within the same cellular system. When implementing this feature, a usermust specify a pathway for a priority regions file by clicking on the corresponding
Regions File Buttonand typing in a file route. CelOptima expects files with extension.txt. These files were originally exported from CelPlanner.
The Use Mobility Regions Box allows users to account for load distribution amongservers in more mobile regions of a cellular system. By implementing this feature, a user
must specify a pathway for the mobility regions file by clicking on the corresponding
Regions File Buttonand typing in a file route. Note that whereas the Mobility Field in
the matrix prediction parameters allows users to select a mobility parameter that appliesto an entire cellular system, the mobility regions feature allows users to account for
differences in mobility in the various regions within a cellular system. CelOptima expects
files with extension .txt. These files were originally exported from CelPlanner.
3.
By clicking on the Define Outage Table Button, the following table and chart appear:
Rev. 4/2001 2-15
-
7/29/2019 Cel Optima
42/176
CelOptima4.6 Users Guide
4.
The Outage Table allows users to specify calculation percentages for co-channel and adjacentchannel interference based on C/I values. This table depicts an equivalent C/I as if there were
only one signal and one interferer. The Outage Table has an availability range between 0% and
100%. The software always scans the Outage Table from smallest to highest availability
values. Thereby, when a percentage is repeated, the software chooses the lowest correspondingC/I value. The only exception to this scenario is 100%, which sets the maximum range of the
table.
Note that for a C/I value of 2dB, where strength of the interfering signal is much greater than
the strength of the carrier signal, CelOptima will calculate 100% interference between co-channels and 50% interference among adjacent channels. Alternatively, with a C/I of 21 dB,CelOptima will calculate interference as 23% between co-channels and 0% among adjacentchannels at particular geographic points in the matrix.
Users can either define these values by clicking on the fields corresponding to a given C/I
value. Conversely, clicking the Automatic Adjustment Button will reproduce the default
values now shown in the table.
Finally, after all the fields in the Execute Subtab have been considered, users can clickthe Execute Matrix Button to prompt CelOptima to initiate calculation of the
interference matrix.
Rev. 4/2001 2-16
-
7/29/2019 Cel Optima
43/176
CelOptima4.6 Users Guide
2.3.2 Combine Subtab
AfterCelOptima has calculated two or more matrixes with varying parameters, usershave the option of combining two matrix files into a third matrix file for analysis
purposes.
1
2
3
1.
By clicking on the corresponding File Button for either the first file or the second file, auser can then designate a file route for both intended files that will be combined by
CelOptima. In addition, CelOptima provides a weighting feature for prioritizing the
original files. For instance, if a user intends to weight the first matrix file as 60% and the
second as 40%, the user should type .60 in the Weight Field corresponding to the firstfile and .40 in the Weight Field corresponding to the second file.
2.
After clicking on the Directory Button underneath the Output Matrix File, users can type
in a pathway for the combined matrix file.
3.
Rev. 4/2001 2-17
-
7/29/2019 Cel Optima
44/176
CelOptima4.6 Users Guide
After a user has appropriately designated the file locations for the first file, the second
file, and the combined file and indicated weighting for each of the original files, the usercan click the Combine Matrixes Button to prompt CelOptima to create the combined
matrix file.
Rev. 4/2001 2-18
-
7/29/2019 Cel Optima
45/176
CelOptima4.6 Users Guide
2.4 Planning Tab
The Planning Tab contains five subtabs for specifying parameters and executing theplanning and optimization functions ofCelOptima:
Penalties Subtab
Carriers Subtab
Carrier Plan Subtab
Code Plan Subtab
Performance Subtab
2.4.1 Penalties Subtab
In the Penalties Subtab, a user can attribute scoring values for interference events (co-channel, adjacent channel, cross polarization, or channel separation) or prohibit certain
events altogether. CelOptima then sums these scoring values for the individual events to
arrive at an overall score for the entire system. Higher scores reflect either an increased
number of interference events occurring within a system or an increased percentage ofinterference events occurring in unwanted areas within a system. By comparing scores, a
user can use this CelOptima function to rate changes to a system or evaluate different
systems.
1
2
Rev. 4/2001 2-19
-
7/29/2019 Cel Optima
46/176
CelOptima4.6 Users Guide
1.
In the figure above, the values in the column containing numbers can be changed to suit a
users need. For instance, in the first section, which pertains to co-channel interference, a
user can prescribe a value for co-channel interference that occurs within different sectors
in the same site. If a user opts to give this event a higher penalty rating, the user canincrease the penalty value for that event from 0 to 100%. Alternatively, if a user wants to
give this event a lower score, the user can decrease the penalty value. Finally, if a user
opts to entirely prevent this event from occurring in the system, the user can click on thecorresponding Prohibited Box. CelOptima will use the penalty score values to generate a
score for the system under study and also disallow the events prescribed as prohibited
from occurring while creating the frequency plan for the system.
2.
The Carrier Outage Exceeded is equivalent to 100% minus Time Availability. This
penalty applies if a pixel has an outage above the user-defined threshold.
Note that CelOptima may not be able to create a viable frequency plan if too many
types of events are prohibited due to limitations arising from other, specified
parameters within the system.
Rev. 4/2001 2-20
-
7/29/2019 Cel Optima
47/176
CelOptima4.6 Users Guide
2.4.2 Carriers Subtab
Within the Carriers Subtab, users can designate the location of the frequency table and
also save and edit a blocked carriers table for creating an automatic frequency plan(AFP).
Note that the fileextension for the
frequency table imported
from CelPlannerhas a.gfq extension.
1
2
3
1.
At the top of this subtab, the field adjacent to the Carriers Table Buttonautomatically
displays the frequency file that was imported from CelPlanner. Clicking on the Carriers
Table Button will allow a user to designate and choose a different frequency file, ifdesired. Underneath this field, the screen displays the number of total traffic channels,
total control channels, and the total channels pertaining to the chosen frequency table.
2.
Rev. 4/2001 2-21
-
7/29/2019 Cel Optima
48/176
CelOptima4.6 Users Guide
The Blocked Carriers per Sector Button allows a user to import a blocked carriers file
that prescribes different blocked channels per sector as opposed to blocked channels foran entire cell site or project. The file format for the blocked barriers file is .sblc and is
described in item 5.1 in Chapter 5 of this manual.
By clicking the Global Blocked Carriers Button, users can designate the file name for ablocked carriers file that pertains to blocked channels to entire cell sites within a system
as opposed to blocked channels per sector. The file is binary and has a .blc extension.
3.
Finally, clicking on the Edit Blocked Carriers Table Button allows a user to edit anexisting blocked channels file. After this button is clicked, CelOptima will retrieve the
file and display the table in the following window. The top of the window contains a
button bar with commands for manipulating the file:
Blocked Channel
Mode; allows user
to select blocked
channels.
Release Channel
Mode; allows
user to unbloc
selected channels.
k
Clear Table; clearstable of all blocked
channels.
Open Blocking
Table; opens
table from
selected file.
Save Blocking
Table; saves table to
designated file.
When users edit a blocked carriers file, a corresponding legend will also appear with theblocked channel file window. Users should be aware that these legends will be importantfor later analysis but do not currently apply.
In the left-hand corner of the blocked carriers window, the following drop-downmenu appears by clicking the corresponding drop-down pointer:
Rev. 4/2001 2-22
-
7/29/2019 Cel Optima
49/176
CelOptima4.6 Users Guide
The functionalities of each of the three, available options are briefly described below.
Block Channels Option: enables the editing of blocked channels. To block a channel,click on it on the table and it will turn red, indicating that it has been blocked for usage.
CelOptima will not use blocked channels for planning.
Allocated Carriers Option: displays the allocated carriers for the selected site as
described in more detail in chapter 3, item 3.1.7.
Edit Carriers: allows users to make changes to selected sites, adding or deleting carrierson a sector-by-sector basis. To add a carrier, click on the desired carrier; to delete a
carrier, click on it, and CelOptima will delete that carrier from the corresponding sector.
2.4.3 Carrier Plan Subtab
The Carrier Plan Subtab contains options for creating the Automatic Frequency Plan.
Rev. 4/2001 2-23
-
7/29/2019 Cel Optima
50/176
CelOptima4.6 Users Guide
6
5
4
3
2
1 Note that the fieldsin this portion of
the screen onlyapply to systemsthat allocate
frequency based on
time slots (i.e. GSM
or TDMA).
1.
At the top of the screen, users have the choice of either creating a plan from scratch orexpanding a current plan. If the user chooses to create a new plan, CelOptima will
automatically overwrite the new plan onto the corresponding project (.prj) files contained
in CelPlanner. Similarly, if the user expands an existing plan, CelOptima will add thechanges to CelPlanners project files.
Users have two selections for the Carriers Allocation Sequence per Sector: Sequential
and Random Allocation. For sequential allocation, the software allocates the first set ofcarriers in the spectrum that were within allocation constraints to the first sector. Then,
the software allocates the next set of carriers to the second sector, and so on. This
allocation method leaves the last carriers in the spectrum free. With random allocation,the software avoids repeating carriers by allocating new carriers randomly. Thus,
carriers reuse among sectors will have less repetition of the same distribution pattern.
Although system performance using either option is roughly equivalent, an unbalanceddistribution of channel allocations is undesirable considering that there are still free
channels available for allocation.
2.
As noted in the figure above, the next set of fields apply only to time-slotted systems,
such as GSM and TDMA. The Total Channels per Carrier Box allows a user todesignate the number of traffic channels corresponding to each carrier in the system. For
instance, in one frequency band, a system may use eight channels per carrier. Therefore, a
Rev. 4/2001 2-24
-
7/29/2019 Cel Optima
51/176
CelOptima4.6 Users Guide
user would type 8 in this box. By checking the Plan Control Carrier Box, the user
prompts CelOptima to create a plan for the control channels in the system. The Default #
Ctrl. Carriers per Sector and corresponding file button allows users to import a
previously created plan that applies to the entire system.The file format for this file is
described in item 5.5 in Chapter 5 of this manual and has a .ccps extension. Likewise,
checking the Plan Traffic Carrier Box will prompt CelOptima to create a plan for thesystems traffic channels.
3.
The next section within the Carriers Subtab screen relates to Spacing between Sector
Carriers. Here, users have the option of either planning carriers in groups or byminimum separation per sector. If opting for separation per group, the user must
designate the separation distance in a group (i.e., 2, 3, 6, 21 etc.) in the field below the
Plan Carriers in Groups Option. Alternatively, a user can select the Plan Carriers for
Minimum Separation in Sector Option. By doing so, the value in the Default Min.
Chn. Separation Field (underneath the dynamic allocation option in 4) should reflect thenumber of groups within the frequency table.
In cases where the required minimum separation per sector exceeds the capacity of the
frequency table, selecting the Dynamic Allocation Option will prompt CelOptima to
automatically calculate a new frequency separation that will allow for assignment of theremaining channels.
4.
The Default Min. Chn. Separation Field is the minimum carrier separation allowed inany sector of the project (usually due to combiner limitations). If any sector(s) requires a
minimum separation other than the default, the user can provide a Minimum Dist.Sector File containing these requirements. This file has a .cdps extension and is furtherexplained in item 5.3 in Chapter 5.
5.
By selecting the Calculate Quick Score Option, CelOptima will generate a quick score
for the system. Selecting the Save Carrier Plan to Project will prompt CelOptima to
save the carrier plan to CelPlannerproject files.
6.
Finally, after completing the carrier plan options within this screen, a user can click onthe Execute Frequency Planning (AFP) Button to create the carrier plan for the system.
2.4.4 Code Plan Subtab
Rev. 4/2001 2-25
-
7/29/2019 Cel Optima
52/176
CelOptima4.6 Users Guide
The Code Plan Subtab allows users to account for a second layer of planning after
allocating channels in the Carrier Plan Subtab. Code planning allows users to ascribedifferent attributes to the same reuse channels that are physically close within a system so
that the overall system avoids conflict. Before describing the functionality of the fields
within the Code Plan Subtab, this section will briefly explain outline reuse technology
for AMPS/TDMA, CDMA, and GSM systems.
1
2
3
4
AMPS/TDMA Systems
AMPS/TDMA systems utilize SAT and DCC in multiple layers to reduce conflict within
a system. Recall that SAT code generally has three options (0,1,2) for reuse channelswithin an area in a system. When a system runs out of SAT codes for reuse channels,
CelOptima will allocate a second layer of DCC codes to differentiate between reuse
channels. This coding structure accounts only for signal strength in code planning.
CDMA Systems
Whereas AMPS/TDMA systems account only for signal strength for allocating reusechannels, CDMA systems utilize pilot PN offset that considers signal strength relations as
well as delay. For CDMA, all pilots use the same pseudo-random sequencing but start at
different offsets. Because the mobile is at different distances from different sectors, it willreceive sequences from different pilots with different delays. This situation can
Rev. 4/2001 2-26
-
7/29/2019 Cel Optima
53/176
CelOptima4.6 Users Guide
potentially cause a conflict within a cellular system. PN offset planning accounts for the
relative delays between sectors together with the signal strength and plans the best offsetdistribution in order to avoid these conflicts.
GSM Systems
Recall that GSM systems utilize BSIC and training sequences for code planning. In
addition, the code planning structure operates under the same principle as AMPS/TDMA
systems do.
Description of Fields within Code Plan Subtab
1.
The Total Field contains the total number of resources available for code planning. Forexample, AMPS systems usually have a total of 3 resources; CDMA usually have 256
available resources; and GSM normally have 256 resources.
The Resource Field lists the type of resources used for a particular system. AMPSsystems use SAT; TDMA systems use DCC; CDMA use PN sequences; and GSM
systems use BSIC.
2.
For the Seq. Plan Buttonand corresponding field, users should select the location and
file of the frequency plan created by CelOptima from the previous step that is creation of the frequency planning file (AFP) within the last subtab, the Carrier Subtab.
3.
In this section, users have two options for code planning. Users can select the ResourcesPer Sector Option to plan 1 resource per sector. Alternatively, users can choose the
Resources Per Frequency Optionfor planning 1resource per carrier multiplied by thetotal number of available carriers. If choosing the latter option, a user must specify the
location of the frequency file by clicking on the Exist. File Button below the ResourcesPer Frequency Option.
4. Clicking the Code Planning Execute Buttonwill prompt CelOptima to create a code
plan based on the required parameters.
Rev. 4/2001 2-27
-
7/29/2019 Cel Optima
54/176
CelOptima4.6 Users Guide
2.4.5 Performance Subtab
At the top of the Performance Subtab, users can select the source of the frequency fileused for calculating the performance predictions. If a user selects the Plan from ProjectFrequencies Option, CelOptima will use the frequency file located in the CelPlanner
project files to calculate the systems performance predictions. Alternatively, selection ofthe Plan from Translated Frequencies File Option allows a user to use a frequency plan
that is in .ftc format and was created by CelOptima. Item 5.4 in Chapter 5 describes this
format.
Underneath the first section of the Performance Subtab there are three, additional
subtabs:
Combine Subtab
Quick Score Subtab Predictions
Combine Subtab
The Combine Subtaballows users to plan the performance for multiple layers of trafficgrids and prediction levels. For instance, users can combine performance plans for
different ground levels in which they might consider the performance of a system at
Rev. 4/2001 2-28
-
7/29/2019 Cel Optima
55/176
CelOptima4.6 Users Guide
2-29
ground level and also the performance of the system at the second-story level. By first
specifying the respective frequency files and weight given to the different levels and,second, stipulating an output directory for the combined prediction file, a user can
combine performance predictions by clicking on the Combine Performance PredictionsButton at the bottom of the screen.
Quick Score Subtab
Within the Quick Score Subtab, users have another opportunity to prompt CelOptima tocreate a quick score for the system. Recall that, at the bottom of the Carrier Plan Subtab,
users can generate quick scores for the CelOptima-created AFP.
Clicking on the Execute Quick Score Button at the bottom of the screen will generate a
quick score for evaluating system interference among co-channels and adjacent channels.CelOptima also calculates a total value for the entire system by summing the scores forco-channel and adjacent channel interference.
Prediction Subtab
Rev. 4/2001
-
7/29/2019 Cel Optima
56/176
CelOptima4.6 Users Guide
In the Prediction Subtab, a user can calculate performance predictions for control
carriers and traffic carriers by clicking the respective Execute Predictions Button foreach type of carrier. As displayed in the table pertaining to each carrier type, CelOptima
will calculate the co-channel and adjacent channel interference per minimum and
maximum bin and sum these values. In the last column, CelOptima will also calculate thetraffic in Erlangs for minimum and maximum bin (minimum and maximum outage on a
pixel). Finally, in the availability row at the bottom of the table, CelOptima displays theavailability percentage (time that the system is available) for each category.
Rev. 4/2001 2-30
-
7/29/2019 Cel Optima
57/176
CelOptima4.6 Users Guide
2.5 Tools Tab
The Tools Tab allows CelOptima to export the AFP and resources (SAT, DCC, PNOffset created in the Code Plan Subtab) and import scq. files from CelPlanner for
sequential optimization of the system within CelOptima. The Tools Tab contains two
subtabs: Import Subtab Export Subtab
2.5.1 Export Subtab
The Export Subtab allows CelOptima to export frequency plans and resource files in .prj
format either to CelPlanner, another location in case a user does not want to change the
current project files in CelPlanner, or both to CelPlanner and another location. FromCelPlanner, these files can be exported subsequently in text format.
At the top of the screen, selection of the Save CelPlanner Project Option will promptCelOptima to automatically export any changes to CelPlanner. Clicking the ChangeCelPlanner Project Frequency Table Name Option will triggerCelOptima to change
the current table name within CelPlannerto the new name coinciding with the AFP. The
Clear CelPlanner Frequencies Option clears the current frequency tables in
Rev. 4/2001 2-31
-
7/29/2019 Cel Optima
58/176
CelOptima4.6 Users Guide
CelPlanner. Generally, all three options are selected unless the user is considering
multiple parameter changes in several AFPs and does not wish to update the CelPlannerfiles afterCelOptima creates each AFP.
By clicking the Translated Button in the middle of the screen, a user can select a file in
the adjacent field for export from .ftc to .prj format. Subsequently clicking the ExportFreq. Plan Button will prompt CelOptima to export the file either to the CelPlanner
project files or another location for possible, later use in CelPlanner. Similarly, to export
a resource file from .srf to prj. format, a user must click the Seq. File Button, select a filefor export, and click the Export Resource Button.
2.5.2 Import Subtab
The Import Subtab allows users to import ASCII frequency files into CelOptima. Thesefiles may have been created either manually by the user or within a non-CelPlan tool. The
imported files must originally have an .sqc extension, which is an interchangeable formatbetween various tools. After designating the file for importation in the field next to the
Sequential Button, a user can click on the Translate Sequential Channels Button toprompt CelOptima to translate a file to a .ftc format.
Rev. 4/2001 2-32
-
7/29/2019 Cel Optima
59/176
CelOptima4.6 Users Guide
CHAPTER 3.................................................................................................................. 2CHAPTER 3Presentation (CelView).................................................................................................... 23.0 Introduction............................................................................................................... 2
3.1 Views ........................................................................................................................ 3
3.1.1 The Log Information Window (Show Log)........................................................... 6
3.1.2 Define Maximum Size ........................................................................................... 73.1.3 Desktop .................................................................................................................. 8
3.1.4 Presentation............................................................................................................ 9
3.1.5 Directories.............................................................................................................. 93.1.6 Map Maneuver ..................................................................................................... 11
3.1.7 Carriers Table....................................................................................................... 12
3.1.8 Geographic Profile............................................................................................... 183.2 Presentation............................................................................................................. 21
3.2.1 Cell Site Tab ........................................................................................................ 22
3.2.2 Layers Tab ........................................................................................................... 243.2.2.1 Background ....................................................................................................... 26
3.2.2.2 Foreground........................................................................................................ 353.2.2.3 LOS (Line-of-Sight).......................................................................................... 41
3.2.3 Colors Tab............................................................................................................ 443.2.4 Prediction Tab...................................................................................................... 45
3.2.6 Overlay Tab ......................................................................................................... 46
3.2.6.1 Region Tab........................................................................................................ 463.2.6.2 Vectors Tab....................................................................................................... 51
3.2.6.3 Measurement Tab.............................................................................................. 52
3.2.7 FCC Tab............................................................................................................... 543.2.7.1 Display Tab....................................................................................................... 54
3.2.7.2 Single Tab ......................................................................................................... 583.2.7.3 Composite Tab.................................................................................................. 60
3.2.7.4 Filters Tab ......................................................................................................... 64
3.2.8 Db/Grid Tab......................................................................................................... 67
Rev. 04/2001 3-1
-
7/29/2019 Cel Optima
60/176
CelOptima4.6 Users Guide
CCHHAAPPTTEERR33
Presentation (CelView)
3.0 Introduction
The Presentation Module, also known as CelView, contains powerful features that allow
users to display and analyze the various outputs generated by CelOptima. In addition, the
following graphical elements of the CelPlanner Suite are supported and can be displayed
in concurrence with the Views:
Terrain Databases Topography, Morphology, and Images Region files Measurement files
Prediction files
The basic entity of the module is the View, which is a window whose content is defined
by the user. Multiple Views can be created and manipulated simultaneously; they can
also be synchronized, allowing them to have different contents with identical zoom
levels.
The Presentation module works in conjunction with the Views, being common to all
views and controlling what is displayed and how it is presented. It is divided in eight tabs,as described below:
Cell Site: controls the presentation mode for the cell sites; Colors: controls the color palettes used in the terrain databases and predictions;
Overlay: controls presentation of region, vector, and drive test data files; Layers: controls the types graphical layers displayed on a View, namely the
terrain data and non-CelOptima predictions;
Prediction: controls the prediction layer to be displayed forward or reverse; FCC: controls the presentation ofCelFCCpredictions; Db Grid: allows users to view additional information about a project.
IMPORTANT: A Project File must be loaded for this module to be operational.