AFP Training Presentation.ppt

7/16/2019 AFP Training Presentation.ppt

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Optimi Corporation Company Confidential 1

Optimi x-AFP

AUTOMATIC FREQUENCY PLANING


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The Optimi X Environment

Four Main Windows to view, edit, and modify data.

Spatial view (map view)

Tools/View (layers manager) Olap view (pivot table)

Edit sector, and network view (forms)

Spatial view, layers, forms, and pivot tables are

synchronized


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Main Menu& Toolbar

Runs on all Windows Platforms

Menu Driven Application

Tool Bar Available for major operations

Spatial View


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Layer Manager-> It allows users to enabled/disable layers for display such as Polygons,

Rasters, Maps, and project specific Physical, Network, RF, QoS and Traffic data.

Network Manager-> It allows users to view and access Project Network Information in a

tree like format like that of Windows Explorer.

Menu items -> It allows uses access all Menu through tree like format

Layer Manager

Network Manager

Menu Items


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Dockable Tools/Views

Customizable toolbars

Colored and dockable message Log

User Messages are presented

in different colors depending on

the importance of the message


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View Pivot Table PhysicalSector or

Menu Items Layer View Pivot Table PhysicalSector


Olap View (Pivot Table)

Convenient way to select and filter

sectors based on parameter values

Allows user to analyze

Physical Network

RF

Traffic

QoS

Display Only Grid, Graph or Both.

Export to CSV, Excel, MS Word, and HTML


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EditSector or Menu Item Layer Edit Sector..


List of

sectors

Name

Query

Groups

Edit Sector View Displays the hard and softparameters for every sector in the

network

Tab Driven Form

Editing of Multiple sites supported



Frequency Allocations

BCCH/TCH Add/Remove Frequencies

MA Lists View/Edit Hopping Lists

System Parameters

Edit System Properties Access Method

Channel Allocation

Spatial View Settings Adjust Spatial View C/I

Pivot Table Adjust/Edit Pivot table View

Settings

EditNetwork or

Menu Item LayerEdit Network




Task Flow Manager

The Task Flow Manager (TFM) is designed to simplify the navigation of the tool menu and to

assist in the creation of reproducible engineering processes

Once a Task Flow is defined, it can be distributed to other engineers

2 modes of operation

Manager ability to define the steps needed to reproduce a process

User follow the steps defined by the manager



Task Flow Manager

Creating a process is assimple as dragging anddropping a menu item fromthe right side of the screento the left

All menu items in theapplication are available in

the TFM, including PivotTables and Spatial views

Each Task Flow that youcreate is stored in a csv filein ProgramFiles/Optimi/Optimi

X/system/task templates



Default Parameters

Optimi X presents a grand variety of parameters that can be tuned to adapt x-AFP to

a great variety of networks and situations. These parameters may also be importedthrough the Import Default Parameters functionality. This parameter file may beimported to be use on current project, or all projects saved ona the Default projectdirectory. This offers a great advantage because company can create specific defaultparameters files for distinct situations and networks and distribute to its engineers.

The following are the Default Parameters files



Optimi X Project Creation Summary

Import Physical Database

File

Import

Physical

Optimi Use input files

.physical.sector.csv

.physical.site.csv

Import Group file or group files

File ImportGroups

.csv

Import Network Configuration

File Import Network GSM AllAlcatel/Ericsson /Huawei /Motorola/Nokia Nortel/

Import Measured RXQUAL Data

File Import QoS Measured GSM RXQUAL Ericsson MRR/Optimi Alternate Use Joint RXLEV/RXQUAL files .csv

Importing HO stats in Optimi Format

File Import Network GSM HO CountsOptimi

Use input file . network.gsm.ho.csv

Note: All Imports can be done through the Menu Items Layers also.



Optimi X Project Creation Summary

Import Traffic Data in Optimi X Format

File Import Traffic Voice GSMOptimi

Use . traffic.voice.gsm.csv

Import TCH TRU Demand (if you want to update the # of TCH TRUs for a lot of cells)

File Import Network GSM TCH DemandOptimi

Use file .network.gsm.tch_demand.csv

Import Mapinfo Polygons/Roads

Go to Edit Menu Polygons to Add Polygons. Select View Menu Layer Manager to display the Layer Manager

Check the Polygon check box

Check the Wold/MapPoint check box

Import Interference Matrix (Mobile Measurements) Data File Import RF Mobile MeasurementsEricsson / Nokia Others

Import Optimi Format File Import RF All Optimi

Use .cid file (IM in Optimi X format)

Generating IM from Mobile Measurements (if using Mobile Measurements) x-AFP Interference Matrix Tools Generate IMFrom Mobile Measurements



Physical Database

Objective/Comments

Import Wizard to Optimi X Wizard Create Optimi Project From Within Wizard (Be sure Cell ID in BSC is Populated)File Optimi Project Exchange Create Project

Import Planet EV to Optimi X FileImportProjectPlanet EV

Create Optimi X files .physical.sector.csv

.physical.site.csv

Create a Physical database in Optimi X with ON-AIR cells only (Baseline Project)

The list of cells in the physical database will decide the set of cells we will be working with

Importing physical database in Optimi X project File Import PhysicalOptimi

File Import PhysicalGeneric Importer

How to create OptimiX physical files Using XLS

From Wizard From Planet EV



Importing Physical Database

Generic Importer

Allows user to specify the

Physical database formatthrough the Data Format Tab

Allows to Mapped physical

database fields to Optimi x-

AFP format through the Field

Mapping Tab.

It also allows to save a

template for future use.



Creation of Groups

Objective/Comments

Classify sectors in various groups (Create .csv file, see sample file format) You may use any groups you would like (similar to flags in Planet terminology) Examples

include:

TCH_Frequency_Group

BCCH_Frequency_Group

BSC

BTA Cell Status (ON-AIR or New)

Import groups

File ImportGroups

Ensure all sectors belong to a group

Use View

Pivot Table

Network

GSM

All Ensure no group has the option Unassigned

Practice how to select sectors from various groups

For example, sectors with Status=On-Air

Create groups within the tool



Import of Network Configuration (I)

Objective

Import network configuration in Optimi X File ImportNetworkGSMAllEricsson

CNA/Nokia XML../Siemens others

Parameter Filter

Sectors Filters by Group Input Data Filter

Main Optimi X files .network.gsm.sector.csv

(BCCH,BSIC,MAL,UL/OL)

.network.gsm.trx.csv (TCH TRX per cell, MAIO,

TCH channel, hopping type)

.network.gsm.mal.csv (frequencies in each MAL)

.network.gsm.neighbor.csv (neighbor list)


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Import Options

Merge into Current Configuration Updates network

data for the sectors being imported

Update Halted Sectors Imports data for Halted

Sectors

Preserve existing neighbor relationships Keeps

current neighbor relationships in the project otherwiseall neighbor relationships are removed

Always Create _CHGR_1 Sectors Channel Groups

Preserve unique mal definition Preserves OSS MA

Lists names.

Output Reconciliation Data Compares Physical Data

with Network Data and provides files with differencesbetween the two

Import of Network Configuration (II)


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Network Data (GSM) Contains:

Project Frequency BandSector BCCH Frequencies

Sector BSIC

Sector TRX Information

Sector MA List

Sector HSN #

Import of Network Configuration

Network Data (Neighbors) Contains:

Neighbor Relations

HO Count and HO Success %

BCCH/BSIC pair of Neighbor

External Neighbor Info can also be viewed


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Traffic data creation for AFP and QoS

Objective

Import ISBH traffic data to use for AFP

Import traffic for the Joint RXQUAL/RXLEV recording period for IM validation

Create the Optimi X format

Multiple traffic values per cell.

Tool average out traffic values and assigns it per cell.

Traffic for various to use for IM validation, ISBH

Importing Optimi X traffic file

File Import Traffic Voice GSMOptimi

Main Optimi X files created

. traffic.voice.gsm.csv


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Generating Traffic from SACCH Reports

Objective/Comments

Create traffic data in Optimi X format from Joint RXLEV/RXQUAL Compare estimated traffic from Joint RXLEV/RXQUAL with traffic from switch

How to calculate Erlangs from Joint RXLEV/RXQUAL report

Every measurement report has a duration of 480 msec (GSM SACCH period)

If we have 1,000,000 reports received by the cell site it means that the cell was utilized for

1,000,000*480 msec=480,000 secs = 8,000 minutes or 8,000 MoUs

If these reports were recorded during the entire day, i. 24 hrs thenTraffic in Erlangs = 8,000 MoUs/(24*60 minutes) = 5.55 erlangs

Converting # of SACCH Measurement Reports to Subscriber Erlangs

MoUs= (# of SACCH Reports)*(0.48/60) minutes

Traffic(E) =MoUs/(60*# of Hours of Recording)

Note that Traffic (E) represents Subscriber Erlangs, i.e. does not account for HR traffic


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Database Cross Validation

Objectives

Identify database inconsistencies amongst

ON-AIR cells

Traffic report

Switch file

Typical database inconsistencies/flags Physical Database cells not On-Air

On-Air cells not in Physical Database

On-Air cells not present in the traffic report

On-Air cells in traffic report but have 0 traffic Cells in traffic report carrying traffic but not in physical (i.e. on-air cells

not flagged as on-air)

All on-air cells need to have a BCCH/BSIC defined in .dat file


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Database Cross Validation

How to identify inconsistencies

Run Consistency Check Options tool

x-AFP Menu Consistency Check or F6

Review the Optimi X messages in Msg Log Window


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Measured RXQUAL and RXLEV Data

Objective/Comments

Import Measured RXQUAL data per cell Import Measured RXLEV data per cell

Compare Measured RXQUAL with Predicted RXQUAL

The comparison will tell us how accurately we can predict RXQUAL

Importing MRR data

File Import QoS Measured GSM RXQUALEricsson MRR/Nokia/Optimi Alternate

others

Main Optimi X files created

.gsm.qos.measured.csv

. .gsm.qos.measured.rx.joint.csv


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Traffic spreading on channel groups and UL/OL

Use Optimi X Special Utilities

x-AFP Special UtilitiesSplit Traffic Between Underlays/Overlays

Objective

Spread traffic on channel groups


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HO attempts data creation

Objective

Convert a report of Daily # of HO attempts to an Optimi X format

Output is the average daily of # of HO attempts for each nbr relationship

Optimi X file created

. network.gsm.ho.csv

Importing HO stats in Optimi X

File Import Network GSM HO CountsOptimi

Spreading # of HO attempts in the UL/OL

x-AFP Special UtilitiesSplit Handoff Statistics Between Underlay/Overlay


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Import # of TCH TRUs per cell

Objective

Show a sample file that can be used to import the # of TCH TRUs in Optimi X Create such a sample file with the current configuration using XL

Optimi X file modified

. network.gsm.trx.csv

Optimi X file to be imported

.network.gsm.tch_demand.csv

Importing TCH TRU demand File Import Network GSM TCH DemandOptimi

Two Options -> Merge and Append

Note that if # of TCH TRUs is LESS than current configuration NOT updated!!!!


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BSIC Audit (Before running Recordings)

Objective

Identify a list of cells with close Co_BCCH_BSIC reuse (< 15 miles/24 Km) Retune the BSIC for this set of cells

Use BSIC Report in Optimi X to determine the cells with Co_BCCH_BSIC reuse

View Pivot Table Network GSM CO-BCCH/BSIC Conflict Report

Distance is specified in Km ( Dist(miles) = Dist(Km)/1.6 )

Select to optimize the BSIC ONLY for cells with Co_BCCH_BSIC reuse < 15 miles

Optimize BSIC for cells with Co_BCCH_BSIC reuse < 15 miles x-AFP Optimization and select BSIC

Suggested Constraints (see next slides)


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BSIC Audit (Sample BSIC Report)


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BSIC Optimization Default Settings

Interference Matrix can be used as interference source (if IM is available)

if this option is used while calculating the interference signal levels, the optimizer willconsider the C/I values from the project IM


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BSIC Optimization Default Settings Continued

Additional costs for second order relations Neighbor-Neighbor

Neighbor-Interferer

External neighbor-External Neighbor


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BCCH & BSIC conflict report improved to perform consistency checks on

external neighbors and 2nd order neighbors:

"2nd Order Ext Nbrs" checks the conflicts if two sectors that are neighbor to same

external cell share the same BCCH-BSIC combination

"2nd Order Nbr-Interf" column checks if the "sector" is a neighbor of a common cell while

"sector2" is the interferer of that cell.

BCCH & BSIC conflict resolution


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IM Sources of Generation

Drive test IM

Useful in performing what-if scenarios, i.e., RF changes can be drive tested togenerate new IM matrix

Time intensive to collect

Require several scanners running simultaneously

Switch based IM Provides interference picture exactly where mobile calls are placed

Takes some time to collect (Approx 2 Weeks)

Propagation model IM Fastest way to generate IM

IM can be modified immediately based on RF changes Heavily dependent on the accuracy of the propagation model


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Drive Test IM

Pros:

Accurate RSSI measurements - scanner drives std. dev. = 2dB Provides a very accurate C/I description at every measured location

Serving area of the victim cell

Independent of the frequency assignment

Based on the strongest RSSI and hysteresis value

Cons:

Very expensive and time consuming

RSSI measured on street level only

Does not take in-building measurements

Subscriber traffic distribution is uniform along roads

Actual traffic not represented

Older drive test equipment cannot always differentiate between interferers

Incorrect BSIC or DVCC readings are likely to occur


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Switched Based IM

Pros: High accuracy (based on RSSI measurements on the phone)

Takes into account EXACT traffic distribution of subscribers C/I calculated exactly where calls are placed

Accounts for subscribers in buildings

Less time and money

No need to define actual cell serving areas

Takes into account HCS, Underlay / Overlay, Handovers, Neighbor relations

Cons: No location information, i.e. coordinates

Interferer is identified by BCCH_BSIC

Blind Spots often occur Interference form sectors with same BCCH

Error decoding BSIC if Victim-Interferer RSL is small

Accuracy of the IM is somewhat dependent on the BSIC plan

BCCH_BSIC reuse needs to be optimized Serving areas dependent on frequency plan

A mapping of BCCH/BSIC to cell ID is required

Missing neighbors and interferers Only the 6 strongest interferers are reported (neighbors are a priority)

Max # of interferers per victim cell is 64


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Propagation Model IM

Pros: If you dont model tune, can be fast and cheap.

Most complete IM (unlimited # of relationships)

Serving area of the victim cell is independent of the frequency plan

Based on the strongest server RSL [dBm] and hysteresis margin

Can be used to fill in missing data in other types of IM

Cons: Model tuning can take time and money due to required drive measurements C/I calculated levels on the ground (does not account for subs in buildings)

Subscriber traffic distribution is a best guess Roads

Clutter database

Low accuracy (dependent on the accuracy of propagation model Standard deviation = 6 to 12 dB

Serving area boundaries are inaccurate

Relies on the accuracy of the site database, clutter file, terrain file and propagationmodel

I t f M t i b d S it h D t


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Interference Matrix based on Switch Data

Objective

Match Mobile Measurements (Ericsson BAR, Nokia DAC/CF, Motorola CTP, Alcatel RMS, Siemens SCA)with switch files

Import Mobile Measurements File

Generate IM from MM file

Optimi X file created

.rf.mm.gsm.csv (MM file)

.cid (OptimiX IM)

Importing MM file

File Import RF Mobile Measurements GSM

Generating IM from Mobile Measurements

x-AFP Interference Matrix Tools Generate IMFrom Mobile Measurements

Note: Ericsson ICDM is already a created IM. In this case Ericsson, based on the Mobile Measurements, CNA data, and

settings makes the determination of which sector is the interferer

M bil M t Fil


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Mobile Measurement Files

Victim TotalMeasurements BCCH/BSIC Threshold 1 Threshold 2

DS100A 39000 233/23 1234 234

DS100A 23000 235/46 2341 1345

DS100B 10045 212/34 3908 2789

M bil M t I t


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Mobile Measurements Import

File Import RF Mobile Measurements GSM Ericsson..

I t A t D t


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Import Antenna Data

Importing Antennas

File Import AntennaAntennasWizardTool Imports

Optimi

Wizard

PlaNet

PlaNet EV

CelPlan

Used For R1 and R2 Rules when importing Mobile Measurements

If antennas not available Tool default is 120 beamwidth

Antenna are stored in the \system\antenna-files\subfolder

Horizontal plane Vertical plane

RF Data Resolving Sector Assignments Rules


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RF Data Resolving Sector Assignments Rules

Mobile Measurements

R1

R2

A

BC

D

EF

Rule 1: Maximum distance to resolveBCCH/BSIC pairs

Rule 2: If beyond distance in Rule 1,

apply antenna beamwidth to

decideRules can be extended to discard

unique matches.

Can also use predictions todetermine interferers

S it h d B d IM i O ti i X


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Switched Based IM using Optimi X

Two thresholds are set, e.g. -3dB and 12dB

Assume Gaussian distribution of values

The user specifies the relative thresholds of signal strength between the serving and measured BTS. When a measurement reports includes a C/I < -3dB, counter 1 is incremented and if it is also below 12dB,

counter 2 increments together with counter 1.

With these two thresholds, it is easy to fit a Gaussian curve and calculate the Mean and StandardDeviation C/I. Pr{X


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Generate IM

x-AFP Interference Matrix Tools Generate IM From Mobile

Measurements


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Multiple IM management

Tool allows to Store

/Manage several IM

files in the same

project.

Manage IMfunctionality is

available from:

1. xAFP Interference Matrix

ToolsManage IMs

2. GSM Simulation Parameters

dialog

3. GSM Optimization

Parameters dialog

2 3

1

Vie IM Relationships


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View IM Relationships

The Sector IM Relationships can be seen in the Edit Sector Dialog RF Tab, the OlapView and the Map. The Edit Sector dialog shows the Source, Mean, Standard Deviation,

and Counts (Number of Interference point)

TheSource parameter represents the source of the interference and it can have values

such as: ADDED (copied from others or added in edit sector), MEASUREMENT (from MMR),

PREDICTION (insert interferers feature) orUNKNOWN

IM validation tests


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IM validation tests

Validation Tests Cells with 0 IM relationships

ViewPivot Table RFInterferenceMatrixIM Statistics

Cells with very few IM relationships (< 5: rural cells,indoor, pico cells are explained)


IM relationships with very few counts (< 500)


Identify cells with ISBH outside the recording period Neighbors with missing IM relationships

ViewPivot Table RFInterferenceMatrixIM Neighbor (GSM)

Consistency Check Report x-AFPConsistency Check or F6

Additional Audits IM validation via RXQUAL comparison

IM Normalization

Additional Interference Constraints Report

How to improve IM Run additional recordings for 1-3 days (7 am 11 pm,

try to capture cell BH)

Generate a more complete IM Import ALL recordings and perform IM validation again

Identify cells with no or few IM rels (Use older IM data tofill in such holes)

Blind spots (Use older IM data to fill in such holes)


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Cells with 0 or few (


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IM relationships with few IM counts (


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Neighbors with missing IM relationships

View Pivot Table RF Interference MatrixIM Neighbor (GSM)

Sort by HO Count

Cells missing HO data


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Cells missing HO data

Identify cells with 0 # of OUTGOING HO attempts

View Pivot Table Network GSMNeighbors

Sort by HO counts

Consistency Check Report


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Sectors Tests

Identify cell Not in Interference Matrix and Sectors with < 3 Interferers x-AFP Consistency Check or F6



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Relationship Tests

Identify cells in Interference Matrix but with < 100 IM counts x-AFP Consistency Check or F6

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