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March 2006 x-Wizard – Advanced Training DAY THREE – Permissions Matrix, Channel Planning Tools and Traffic Modeling

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Page 1: Utf 8_wizard Adv (Day Three)

March 2006

x-Wizard – Advanced Training

DAY THREE – Permissions Matrix, Channel Planning Tools and Traffic Modeling

Page 2: Utf 8_wizard Adv (Day Three)

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Class Agenda• Permissions Matrix -

– A description of the x-Wizard permissions matrix and its inputs

• Channel Plans and Tools for Evaluating -– A description of the different sections of channel planning

and interactive channel planning tools available in x-Wizard to help evaluate channel plans

• Traffic Modeling -– A description of x-Wizard traffic grids, how to manipulate

them and how to use them in analyses• Misc x-Wizard Features –

– Features not covered elsewhere in the slides.

Page 3: Utf 8_wizard Adv (Day Three)

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Class Agenda – Permissions Matrix

• Permissions Matrix– Types of Permissions Matrices

The C/I Matrix The Area Matrix The Traffic Matrix

– Create Permissions Matrix Routine Inputs Traffic Sharing Transition Areas - Multi-Resolution Terrain

Page 4: Utf 8_wizard Adv (Day Three)

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Class Agenda – Permissions Matrix

• This section of the class is offered . . .

– To explain the different types of permissions matrices and their use

– To illustrate the differences between the various types of permissions matrices and when each would be used as input to the AFP

– To explain the inner workings of the permissions matrix routine

Page 5: Utf 8_wizard Adv (Day Three)

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Class Agenda – Permissions Matrix

• Permissions Matrix– Types of Permissions Matrices

The C/I Matrix The Area Matrix The Traffic Matrix

– Create Permissions Matrix Routine Inputs Traffic Sharing Transition Areas - Multi-Resolution Terrain

Page 6: Utf 8_wizard Adv (Day Three)

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Permissions Matrix - Types

The Permissions Matrix is a table of values.– Serving cell is listed in each row– Interfering cell is listed in each column

Each value in the table represents how much interference the Serving cell would experience IF the Interfering cell were co-channel.

Each value assumes:– The serving cell is bound by equal power boundaries– The interfering cell is bound by its prediction boundaries (i.e. Calc.

Dist.)– The C/I’s in the serving area will form a Gaussian distribution (i.e.

curve is defined by a mean value and std. dev.) This may not be the case in some instances

Page 7: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Types

The C/I Matrix• Starts with a Tx pair• Calculates the C/I for each

bin over the service area• Counts the # of bins that

have a C/I of ‘X’ to build a histogram

• Repeat for all Tx Pairs 8 7 5 4 2 2

19 15 13 10 9 6 5 4 2

29 22 20 15 14 11 10 8 7 5 3 3

35 30 24 21 17 14 13 10 9 7 6 4 3

28 25 20 17 14 12 11 11 10 9 4 3

18 16 15 15 12 12 12 11 5

Interfering Site

Serving Site

Predicted C/I for Serving-Interfering pair

Page 8: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Types

The C/I Matrix• The Histogram is evaluated for a single Tx pair• The C/I value is entered into the matrix that represents the

Nth percentile

C/I Value entered into Permat

One Value Represents the histogram!

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Permissions Matrix – Types

The Area Matrix

C/I Value Permat

Probability of Interference

-0.10

0.10.20.30.40.50.60.70.80.9

11.1

Prob

abili

ty

Probability of Interference represents % of area interfered

Graph of COCHANF.DAT

• Start with predicted C/I over coverage area

• C/I is used to scale the ‘area’ that is interfered

•Uses the Cochanf.dat (found in Common folder) to scale the area

Example:

C/I of 13 dB represents a 55% probability of interference (i.e. 55% of the area in that bin is interfered)

For one 90m bin, that is:

(90x90) * 0.55 = 4.455 km2 Interfered

Page 10: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Types

The Area Matrix• The km2 of interfered area are binned per C/I to form histogram

• The value in the matrix is a sum of all interfered area (units of km2)

• Moves Interference away from rural sites

•Works best when all sites coverage areas are roughly the same

km2 of Interference at a given C/I

Page 11: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Types

The Traffic Matrix

C/I Value Permat

Probability of Interference

-0.10

0.10.20.30.40.50.60.70.80.9

11.1

Prob

abili

ty

Probability of Interference represents % of traffic interfered

Graph of COCHANF.DAT

• Start with predicted C/I over coverage area

• Read amount of traffic in a bin from a demand grid

• Uses the Cochanf.dat (found in Common folder) to scale the traffic

Example:

C/I of 13 dB represents a 55% probability of interference (i.e. 55% of the traffic in that bin is interfered)

For one bin with 33 mErl, that is:

33 mErl * 0.55 = 18.15 mErl Interfered

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Permissions Matrix – Types

The Traffic Matrix• The mErl of interfered traffic are binned per C/I to form histogram

• The value in the matrix is a sum of all interfered traffic (units of mErl)

• Traffic grid can be weighted by clutter types (i.e. don’t put traffic in water)

• Moves Interference away from high traffic sites

• Of all options, this one works best as input to AFP

mErl of Interference at a given C/I

Page 13: Utf 8_wizard Adv (Day Three)

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Class Agenda – Permissions Matrix

• Permissions Matrix– Types of Permissions Matrices

The C/I Matrix The Area Matrix The Traffic Matrix

– Create Permissions Matrix Routine Inputs Traffic Sharing Transition Areas - Multi-Resolution Terrain

Page 14: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Inputs

Analysis > Create Permissions Matrix

Page 15: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Inputs

Permissions Matrix InputsGeneral

• Output Name: name the new permat or over-write one that already exists

• Reference Grid: no longer used; x-Wizard will generate multi-resolution permat based on terrain assigned to cell

• Transmitters to Include: Normally just use your target technology– note that you can only create a C/I matrix if

you select more than one technology (traffic or area matrices are not allowed)

Page 16: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Inputs

Permissions Matrix InputsDetermining Service Area

• Server Calculation Method: determines the most likely server based on choice

– Strongest Server: most likely server is the transmitter with the strongest Received Signal Level (RSL).

– HCS and Forward Link RSL: Most likely server is the transmitter with the strongest RSL equaling or exceeding the sufficient signal strength and highest HCS level. The HCS level has priority, so the most likely server may not be the strongest server.

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Permissions Matrix – Inputs

Permissions Matrix InputsDetermining Service Area (cont.)

• ‘Exterior’ sectors: A sector that points to unserved area; no other network sites to create equal power boundaries and limit the coverage area

– Min. Serving Signal: Sets the minimum Received Signal Level (RSL) required for a sector to serve a bin

– Max Service Area Radius: Sets the maximum distance an exterior site can serve

Limits the service area by preventing the site from serving an area beyond this radius – even if RSL meets Min.

InteriorSite

ExteriorSites

Page 18: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Inputs

Permissions Matrix Inputs Selecting Type of Matrix

• Generate Area Interfered Matrix – will create an area interfered permissions matrix

• Generate Traffic Interfered Matrix – will create an traffic interfered permissions matrix

• Generate Co-channel Interference (CCI) Histogram: Utilized by OPTIMI x-AFP; not necessary for CellOpt

Page 19: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Inputs

Permissions Matrix Inputs Modeling Traffic Distributions

In reality, two people standing next to each other can be served by two different servers

– Calls originating in different sectors can be dragged into the same bin

– Calls can be served by different sites based on traffic congestion

i.e. one server is NOT serving all traffic in a bin– We want to capture this when distributing traffic

for Permat Traffic in a bin will be split amongst the N different

servers

Call originatedCall dragged to . . .

TerrainBin

Page 20: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Inputs

Permissions Matrix InputsSpreading Traffic

1. MAX Servers: maximum number of servers in a bin

• This field limits the number of sectors that can serve a bin for the purpose of spreading traffic

*Important Point: The Voice Traffic field in the Tx dialog MUST be populated (or you will have to select an override value)

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Permissions Matrix – Inputs

Permissions Matrix InputsSpreading Traffic (cont)

2. Determine % of traffic served by each Sector in a bin

– SERVERWEIGHT.DAT – Traffic distribution based on RSL delta between the strongest server & the Nth server (used if no HCS present)

– SERVERSCALE.DAT – Traffic distribution based on delta between serving HCS and Nth server’s HCS

These tables distribute traffic amongst the different sectors serving the bin.

Only the Nth strongest signals are considered based on the user setting Max. Servers

Delta (dB) Weight0 1.01 0.72 0.53 0.34 0.25 0.1

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Permissions Matrix – Inputs

Permissions Matrix InputsSpreading Traffic (cont)

3. Clutter Weighting: Distributes traffic in a realistic pattern

• Reads Clutter Adjustment’s Traffic Weight field

• Puts more users on roads rather than open fields in rural areas, for example

• Allows the AFP to push interference into open areas and water, for example

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Permissions Matrix – Inputs

Permissions Matrix Inputs (Other)

• COCHANF.DAT – Probability of Interference at various C/I levels– Used to scale the Area interfered and Traffic interfered matrices

• IncludeThermal Noise: Routine will calculate C/I+N, rather than just C/I (Generally NOT Recommended)– Enter an appropriate value for the Noise Figure in (dB).– Can be dangerous with Exterior sectors since Noise

Figure can be dominant source of interference Set Min. Serv. Signal at Exterior sectors to high value (-85dB) to

compensate

Page 24: Utf 8_wizard Adv (Day Three)

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Permissions Matrix – Multi-Resolution

Multiple terrain and clutter resolution in the SAME analysis

Better suited for “Transition Areas” between Morphologies

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Permissions Matrix – Multi-Resolution

Multi-Resolution Analysis Calculations

•Area by Area Analysis

•Areas are then studied to get final result

•Takes advantage of high resolution over a small area while still calculating all sites.

•Much faster than system wide high resolution

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Class Agenda – Channel Planning

• Channel Plan Data– Frequency Mapping Tables– Frequency Templates– Assigning Tables and Templates– Types of iDEN Channels

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x-Wizard Channel Planning

• x-Wizard uses 3 different files to support channel planning– Channel Plan (*.pln)

Radio assignments for each transmitter Saved in …\\Project\Chanplan

– Frequency Table (.ftf) Mapping of channel numbers to center frequencies Saved in …\\Common\Frequency Tables\<Technology>

– Channel Template (*.tpl) Tabulated display of all channels available in the system Saved in …\\Common\Templates

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Channel Plan (*.pln) • The Channel Plan

– Records transmitter radio assignments

– Is project specific• Multiple channel plans

for a project can be created and saved, but– one channel plan can be

active in project at any moment

– Requires explicit save

Channel plans available in a project

Channel plan active in a project

Page 29: Utf 8_wizard Adv (Day Three)

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Frequency Table (*.ftf)• Mapping tables

– Channel number to frequency mapping

• Editable by:– x-Wizard

Tools > Edit Frequency Table…

– Windows (Notepad, Excel…)

• If a channel does not exist in the frequency table then it can NOT be used in the project

• Basis of cross tech studies

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Frequency Table (*.ftf)• Assigned at:

– Project, System, or Switch Split frequency bands

• All radio assignments in Channel Plan must be defined in Frequency Table!– Note that you do not lose

channels, they just can notbe assigned or used.

- Interference in x-wizard is based on frequency

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Channel Template (*.tpl)• Spreadsheet view of available channels in the

system Assigned at the Project, System, Switch, or TX

– All transmitters under that parent use assigned template Provides a structured approach to channel planning

– Groups, Sets, Subsets, and Channels– Color code, & PCCH offset

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Creating Channel Template

• Templates are ASCII files created using the Channel Template Editor Macro– Tools > Channel Template Editor

No Duplicate #’s, spaces, or symbols should be used. Save to x-Wizard will auto-load the template into your Common

Dir. Save elsewhere requires loading into x-Wizard!

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Assigning Channels to Tx• Multiple options in x-Wizard

1. Edit > Channels Click ‘Rainbow’ to open the

template2. Edit cell

Open channel template for the transmitter of the cell

3. ‘Rainbow’ icon on x-Wizard toolbar

4. Wireless Explorer Right mouse-click on the Tx >

Edit Channels5. Import channel plan

File > Import > Channel Plan …

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Radio Properties • Radio Properties are saved

as part of Channel Plan• Radio properties include:

– Options will vary by Technology Examples are:

– Channel number or ARCFN FCC Carrier-Decimal (iDEN) Carrier-Hexadecimal (iDEN)

– Center frequency Set by freq. table

– Radio type 7 iDEN types

– PN’s or Power per Channel

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Radio Types … iDEN Only1. ‘Primary Ctrl’

– Used to model the Motorola primary control channel designation

2. ‘Secondary Ctrl’– Used to model the Motorola secondary control channel

3. ‘Voice’– Used to model traffic channels

4. ‘Planned’– Used to model traffic channels that are currently not on-air but will be implemented in the future

5. ‘Forbidden’– Used to mark channels that can not to be used in the site due to FCC restrictions regarding

incumbent users

6. ‘WiDEN’– A rack unit that contains up to 4 radios; WiDEN groups handle both voice and data. WiDEN

groups contain sequentially adjacent channels

7. ‘Quad BR’– A rack unit that contains up to 4 radios. The device fills the same "slot" as a single radio device.

All radios in a Quad BR contain sequentially adjacent channels. Quad BR groups can contain one, two, three, or four radios. Quad BR's handle only voice traffic.

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Class Agenda – Channel Planning

• Specific Topics– Quasi-Omni’s – WiDEN channels– Quad-BRs

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Quasi-omni (Simulcast Repeaters)

• Sector-level parameter– Separate ‘technology’– Non-translational repeater

One sector donor – other repeaters All sectors use the same channels

– Do NOT interfere with each other Interference analysis Permission matrix calculations

– Represented by one (donor) sector!

• Traffic – Defined for donor sector- traffic

becomes “site” traffic

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Quad BR and WiDEN for iDEN

• Query Tool (Edit > Query) to Find Quad BR and Widen • Requires Channel Plan

• Create Active Set

• Show Sectors on Map

• Run Cover on only Widen– Load active set– Run cover on active set

Page 39: Utf 8_wizard Adv (Day Three)

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Quad BR and WiDEN in x-Wizard

• Supports export-import to CellOpt AFP • x-Wizard can assign multiple Quad BR or WiDEN in

a single transmitter• Interference analysis

– Treats individual frequencies within a group as if they are a separate radio assignments

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Quad BR and WiDEN in x-Wizard

• Channel display in Map-viewView > Channel Options… (Ctrl + H)

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Class Agenda – Evaluating Plans

• Show Conflicts• Show Problems• Show Permissible Usage

• Interference Analyses– Regular Interference– Radio Interference– Traffic Interfered aka Frequency Plan Scoring – 6.6.3.x

for iDEN only.

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Class Agenda – Evaluating Plans

• This section of the class is offered . . .

– To explain the different types of interactive channel planning tools and their use

– To illustrate the use of each tool when evaluating plans

Page 43: Utf 8_wizard Adv (Day Three)

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Channel Plan Evaluation Tools

• x-Wizard Evaluates Frequency Plan interference problems using:

C/I permission matrix C/I requirement for the given technology Adjacent Channel rejection (ACR) of the equipment used in the

system

• C/I Permission matrix tools– Show Conflicts– Show Problems– Show Permissible Usage* Remember Permat is only as good as your prediction models

ACRCochannelAdjacent ICIC //

5

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PM Usage - Show Conflicts– Violations that would

occur if channel were assigned: Co- and adjacent

channel interference requirements violations

Can be changed “on the fly”

Channels > Show Conflicts…

“If assigned to ‘Downtown Chicago’ alpha sector, channel #183 would cause unacceptable co-channel interference to beta sector of the same site!”

How to read this dialog box?!

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PM Usage - Show conflicts• Available also in a template view

Open template using ‘Rainbow’ tool, or Edit > Channels > ‘Rainbow’

Default Colors (can be changed with Format > Color Scheme)•Gray box + Black channel number = No-violation•Yellow box = Potential interference conflict•Yellow frame of an assigned ch. = Existing interference conflict•Light Yellow= Potential interference with different TX of same site!

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Show Problems and Permissible Usage

• Problems Violations resulting from

the current channel assignment

‘Make List’ will create files for each problem type (co-channel, cross-tech...)

• Permissible usage Lists all channels that

can be assigned to Tx without any violation

Channels > Show Problems…

Channels > Show Permissible Usage…

“Current assignment of the channel #242 on alpha and beta sectors of the site ‘Brockton Hwy3’ causes unacceptable co-channel interference between them!”

How to read this dialog box?!

Page 47: Utf 8_wizard Adv (Day Three)

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Manually Manipulating Permat

• Load, manually create or edit permission matrices– Alternations of permat usually

based on empirical data or market knowledge rather than prediction model

• Override matrix is the preferred method

Preserves the original matrix

User can manually enter C/I where needed to prevent reuse

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Channel Plan EvaluationRegular Interference

• Preferred for project level• TX level interference – if

two TX’s share a radio it will be considered interference over the TX coverage area

• Tends to be conservative often shows more interference that exits

• MUCH faster than radio level

• Channel plan or “on the fly”

Radio Interference• Best for small studies• Each radio of the TX is

compared to each radio of other TX’s

• More realistic Interference• N x N calculations where

N=# of Radios for each TX• The more sites/radios the

longer the runtime• Channel Plan Only• GSM Interference is

already a radio level

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Evaluation of Channel Plan

Regular Interference1. Determine servers by

calculation method2. Determine C/I for TX to TX

based on Parameters 3. Display by “Show” menu

- Study channel plan or click on the interfering sites with the mouse by choosing “Select” in Interferers section

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Evaluation of Channel Plan

Radio Level Interference (iDEN Only)

1. Determines C/I for each individual radio (server calc method)

2. Then looks at the C/I value for each radio in each bin and based on the value, determines the best and worst radios

3. Then puts the C/I results in three separate screen grids, best, worst, and average case (show)

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Channel Plan Evaluation• Traffic Interfered Analysis AKA Freq Plan

Scoring• Used to study the amount of interfered traffic

in a channel plan• Two outputs

– Map Screen = Bands represent by amount of interfered traffic % or mErl

– Report Output = Statistical output that can be analyzed outside of x-wizard.

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Class Agenda – Traffic Modeling

• Types of Demand Grids– The Relative Demand Grid

Clutter as relative demand– The Absolute Demand Grid

• Generating Demand Grids– Creating Grids . . .

Using Drawings Importing from MapInfo Using Demand Grid Generator

– Using Switch Data– Overlay/Underlay Cells

– Manipulating Demand Grids Adjusting single demand grid Merging two demand grids

– Traffic Analysis Traffic Served Traffic Offloaded

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Class Agenda – Traffic Modeling

• This section of the class is offered . . .

– To explain the different types of demand grids and their use

– To illustrate the differences between the various types of demand grids and when each would be used

– How to model different traffic scenarios with x-Wizard

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Class Agenda – Traffic Modeling

• Types of Demand Grids– The Relative Demand Grid– The Absolute Demand Grid

• Generating Demand Grids– Creating Grids . . .

Using Drawings Importing from MapInfo Using Demand Grid Generator

– Using Switch Data– Overlay/Underlay Cells

– Manipulating Demand Grids Adjusting single demand grid Merging two demand grids

– Traffic Served Analysis

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Traffic Modeling - Types• Demand grid provides geographical distribution of

the traffic on a bin by bin level. • x-Wizard demand grids types:

– Absolute voice (mE) data (kb/sec)

– Relative any value (pop. etc.)

• Basis of Traffic Study

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Traffic Modeling - Types• Absolute DG

– Shows the actual Erlang value for a given bin

– Used to determine traffic served by a transmitter

– Used for traffic offloading– Used in Monte Carlo analysis to

distribute mobiles geographically

• Relative DG– Traffic values are relative to other

traffic values…– Example: A=10x B – Used in Monte Carlo analysis to

distribute mobiles geographically

Example of a voice absolute DG

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Class Agenda – Traffic Modeling

• Types of Demand Grids– The Relative Demand Grid

Clutter as relative demand– The Absolute Demand Grid

• Generating Demand Grids– Creating Grids . . .

Using Drawings Importing from MapInfo Using Demand Grid Generator

– Using Switch Data– Overlay/Underlay Cells

– Manipulating Demand Grids Adjusting single demand grid Merging two demand grids

– Traffic Served Analysis

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Traffic Modeling – Creating Grids

• x-Wizard supports three ways to create a demand grid– Using x-Wizard drawing utilities– Import from MapInfo– Using x-Wizard demand grid generation analysis

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Traffic Modeling – Creating Grids

• Using x-Wizard drawing utilities– Import from MapInfo– Using x-Wizard demand grid generation analysis

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2) Select object One at a time

3) Add a field to the objects4) Assign a value to the field

– Traffic generated within the area covered by the object

– In mili Erlangs (mE) !!

– Final Step on Next Slide

Traffic Modeling – Creating Grids

1) Draw objects in x-Wizard Polygon, rectangle... 1)2) 3) & 4)

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Traffic Modeling – Creating Grids

5) Convert the polygon into demand gridThe field from the step 3)

Assigns Field value to every bin covered by the object

Distributes Field value between all bins covered by the object

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Traffic Modeling – Creating Grids

– Using x-Wizard drawing utilities• Import from MapInfo

– Using x-Wizard demand grid generation analysis

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1) Import Mapinfo .MIF containing appropriate data

Census population data, morphology classification, streets etc.

2) Display .MIF (Enhanced Picture File) and make it editable

From Control Display Options or Tool Bar

Traffic Modeling – Creating Grids

Imported MIF Fields

File > Import > MapInfo MIF ...

Covert to Demand on Next Slide…

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3) Convert .MIF Enhanced Picture File into demand grid

4) Manipulate resulting demand grid to get traffic demand grid For example: multiply with scaling factor

Traffic Modeling – Creating Grids

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Traffic Modeling – Creating Grids

– Using x-Wizard drawing utilities– Import from MapInfo

• Using x-Wizard Demand Grid Generation Analysis

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Traffic Modeling – Creating Grids

• 1) Assign traffic to each sector using one of the following methods:– A - Manually populate the traffic field for every transmitter

– B - Import switch traffic using x-Wizard import/export functionality File > Import > Project Data…

– Populate ‘Voice Traffic’ at transmitter level (*tx)

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Traffic Modeling – Creating Grids

2) Run analysis

Clutter file (if any) to weigh the traffic based on clutter type

Traffic distribution is bounded by analysis coverage or Max Radius - Whichever condition is met first

If checked x-Wizard will use the specified value for all the transmitters. Otherwise x-Wizard will use the transmitter specific traffic values

Analysis >Traffic > Demand Grid Generation ...

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• Demand coverage area for each transmitter is determined by:

The result of the specified analysis,or

Maximum service area radius (whichever is met first!!)

• If absolute demand is created Every bin in the demand coverage

area will get assigned a traffic value:

Traffic Modeling – Creating Grids

servedbinsA

A TXServingBinABS #.

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Maximum Relative Value =250

Example of the demand grid generation through x-Wizard analysis

Traffic Modeling – Creating Grids

• If relative demand is selected Every bin in the demand coverage area will get assigned a

traffic value:

ValueveMax.RelatiA

AABinABS

BinABSBinREL

)max( .

..

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Traffic Modeling – Creating Grids

• Traffic served by a transmitter IS NOT uniformly distributed over the coverage area of a

transmitter– for example - Urban area may generate more traffic than suburban

• x-Wizard scales the traffic for a given transmitter with traffic weighting associated with clutter I.D

Edit > Clutter Adjustment File ...

Test_clutter-ADJUSTMENT-FILE

Test_clutter-file

Test_clutter-ADJUSTMENT-FILE

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• x-Wizard traffic weighting algorithm Determine the number of bins the

transmitter is serving for each clutter type (N)

Calculate unit traffic for the transmitter

Distribute total Tx traffic to bins of a clutter type served by the transmitter

RuralLakeSuburban

Traffic Modeling – Creating Grids

M

iii

TxTx

NTW

TrafficTotalTrafficUnit

1binsofNumberN

WeightTrafficTWtypesclutterofNumberM

clutterTxTx TWTrafficUnitClutterBinTraffic /mEBinsSuburban

mEBinsLakemEBinsRural

Sector

158053

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Traffic Weighting - Example

• Assume that sector gamma () of a cell-site serves 20E of traffic– Transmitter service area covers following clutter types:

Lake (TW=0)... 34 bins Rural (TW=1) … 246 bins Suburban (TW=3) … 43 bins Other (Urban, Commercial, Water) … 0 bins

• Calculate traffic/bin for each clutter type that will go into DG

mEmETWTrafficUnitbinTraffic LAKETxTx 53153/

mEmETWTrafficUnitbinTraffic LAKETxTx 0053/ LAKESUBURBANRURAL

mEmETWTrafficUnitbinTraffic LAKETxTx 159353/

mEmEmE

NTW

TrafficTotalTrafficUnit M

iii

TxTx 536.52

2461433340000,20

1

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Class Agenda – Traffic Modeling

• Types of Demand Grids– The Relative Demand Grid

Clutter as relative demand– The Absolute Demand Grid

• Generating Demand Grids• Creating Grids . . .

– Using Drawings Importing from MapInfo Using Demand Grid Generator Using Switch Data Overlay/Underlay Cells

– Viewing and Manipulating Demand Grids Adjusting single demand grid Merging two demand grids

– Traffic Analysis

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Viewing Demand Grids• After Creating or Importing…to use View > Demand Grid• Band Limits are in mErlangs• Point Mode Will Display Per-Bin Result

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Traffic Modeling – Manipulations

• DG Manipulation – Operates on one grid –

Scaling– Multiplies the demand

grid with the specified scaling factor

– Add constant– Adds the additive

constant to the demand grid

– Conversion between absolute and relative DG

Tools > Demand Grid > Manipulation ...

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Traffic Modeling – Manipulations

• DG Binary operation– Operates on two grids

bin-by-bin

– Addition– Subtraction– Multiplication

• Any polynomial can be implemented using these operations in an iterative way

Tools > Demand Grid > Binary Operations ...

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Traffic Served Analysis• Calculates number of trunks per

transmitter required to support traffic given by DG

Coverage area of the transmitter is determined using RF prediction analyses and maximum service area radius

• Currently - only Erlang-B is available

Different models will be available soon for voice and data (Pareto, Erlang C etc.)

• Result Traffic report in form of Excel

spreadsheet

Analysis > Traffic > Traffic Served ...

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• Report includes: Traffic served by the transmitter (in mE) Area served by the transmitter Required number of trunks for target GoS Actual GOS for the sector

– Always less than or equal to target GoS!

Traffic Served Analysis - Report

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Traffic Offloaded Analysis• Predicts the impact of

addition of new sites Sectorizing, HCS, cell split etc.

• Evaluates the configurations ... … before new sites are added… with the new sites

• Generates-– a report on the differences– Map Pointers to changes

Analysis > Traffic > Traffic Offloading ...

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Traffic offloaded analysis

• Configuration Before offloading

– Clicking the sites will activate/deactivate them (mouse mode)

– Supports Active Sets

– Activate/deactivate sites to reflect current network status

• Configuration After offloading

– Activate the new sites to offload the traffic from the existing sites.

– Supports the Mouse Mode or by Active Set

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Traffic offloaded analysis• The Report File

– Tabulated Data of Traffic Offloads and %

• The Map View– Map “Pointers” of

Traffic Movement

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Class Agenda –x-Wizard Features

• Fast Analysis Switching-Show Delta• Export Site Reports• Find by ID & Cell Viewing changes• Display Band Profiles and Fade Margin Tool

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New x-Wizard FeaturesFast Analysis Switching (View > Previously Run Analysis) Add notes to each analysis See any users analysis, not just your own Quickly show delta’s (differences) between like analysis so you

can see the effect of your changes from one analysis to another, and also export them to MapInfo for further study (screen grid)

Absolute Numbers -60 – (-62) = +2 (Positive Domain is Weaker)

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New x-Wizard FeaturesSite Report Export (File > Export > Generate Site Report)

•Create custom reports

•Based on import/export fields

•Active or inactive sites

•Selectable sites

•Store Excel templates in the common folder

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New x-Wizard FeaturesSite Search by Name or ID and WEX View Control

Active / Visible display separated Display Name or ID

Find by ID

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New x-Wizard Features• Cell and TX Data Enhancements

User Defined Custom Fields

Site Attachments

Groups/Flags

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New x-Wizard FeaturesUser Defined Fields

Used to Create your own custom definitions Added to Query tool so you can select all sites from a group Edit > Custom Fields Import and export ready

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New x-Wizard FeaturesSite Attachments

• Link any file to a site

• Open the attachment from the Open button-requires the program to be installed (Word, Excel, IE)

• Link from your network with Browse

• URL (Internet Intranet)

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New x-Wizard FeaturesGroups

• Edit menu to build the groups and add members to group. Example:– Group= Morphology

Member=Urban

• Can be assigned by active state/set, manual

• Import and export ready

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New x-Wizard Features • Display Band Profile Tool

– Used to store a set of display bands that can be recalled using a dropdown

• Fade Margin Calculator– Basic fade margins can now

be calculated in x-Wizard rather than outside in spreadsheets

– Helps define “real” expected coverage based on design parameters and environmental variables

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Questions???