Atoll 3.1.2 Gsm Gprs Edge Afp

7/22/2019 Atoll 3.1.2 Gsm Gprs Edge Afp

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Training Programme

1. Requirements

2. Configuring the Atoll AFP model

3. Running the AFP

4. Analysing the new Frequency Plan

5. Process Summary

© Forsk 2012 Slide 2 of 79Confidential – Do not share without prior permission



Requirements Overview

Define Transmitters to be allocated and/or taken into account

Focus & Computation zones

Filtering Zones

Active Transmitters

Define Resources

Frequency, BSIC and HSN domains creation

Set Network Parameters

Transmitters Level (BSIC, Weight, Locking options)

Subcells Level (Frequency Domain allocation, Required TRXs, Traffic Load, C/I threshold, ...)

TRXs Level (Locking options)

Neighbour Plan

Import a Neighbour plan

Interference Matrices

Calculate / Import an Interference Matrix

© Forsk 2012 Confidential – Do not share without prior permission Slide 3 of 79



Requirements: Resources

Define Transmitters to be allocated and/or taken into account

Focus & Computation zones

• Recommendation: if using both of them, put focus zone within computation zone

Filtered and Active Transmitters

Define Resources

Frequency Domain

BSIC Domain

HSN Domain




Requirements: Radio Parameters Settings

Set Network Parameters (dealing with AFP)

Transmitters Level

• Weight [AFP tab]

• Locking options [AFP tab]

• BSIC domain allocation [TRXs tab]

Subcells Level

• Frequency Domain Allocation• Excluded channels

• Required TRXs

• Reception threshold

• C/I threshold

• Traffic Load

• Hopping Mode

• Weight

TRXs Level

• Locking options




Set Transmitters Parameters

BSIC Domain allocation

To define BSICs that can be assigned

Weights

To increase or decrease importance of Transmitters during AFP

Locking options

To keep an existing allocation

Possibility to keep:

• Channel(s) (and MAIO) assigned to TRXs

• allocated HSN

• Allocated BSIC




Set Subcells Parameters (1/3)

A- Frequency Domain Allocation*

Among the ones defined by users (see slide 4)

B- Excluded Channels

Channels that cannot be allocated (border coordination for example)

C- Required TRXs*

Number of “physical” TRXs to be created

D- DL Traffic Load*

Represents the TRX usage rate (Timeslots used / Timeslots available)

E- Reception Threshold*

Minimum reception level (if signal level lower than this, then no service)


A B C D E F G H I J K L




F- C/I Threshold*

Minimum signal quality (if C/I lower than this, then signal is considered as interfered)

G- % max interference*

Maximum level of interference allowed within each service area

H- AFP weight

To increase or decrease importance of subcells during AFP

• By default: BCCH weight = 2 and TCH weight = 1

I- Hopping Mode*

Three modes: Non Hopping OR Base Band Hopping OR Synthesized Frequency Hopping






J- Allocation Strategy

The allocation strategy used during manual or automatic frequency planning. There are two

available allocation strategies:• Free: Any of the channels belonging to the frequency domain can be assigned to TRXs.

• Group Constrained: Each TRX will be assigned one of the groups defined in the frequency domain.

You can use the Preferred Frequency Group to define the preferred group of frequencies when using

the AFP

K- Max MAL Length

The maximum length of the mobile allocation list (MAL). In other words, the maximum numberof channels allocated to the TRXs of the subcell during Automatic Frequency Planning if the

Hopping Mode is either SFH or BBH

L- HSN domain*

The hopping sequence number (HSN) domain of the subcell





Requirements: Neighbour Plan (1/2)

Possibility to copy/paste or to import a list of neighbours

Prerequisites

A text file with at least 2 columns

• Name of the reference cells

• Name of neighbour cells




Requirements: Neighbour Plan (2/2)




Requirements: Interference Matrix (1/3)

Calculation of Interference Matrices

Computation of C/I probabilities between pairs of victim/interferer subcells (for hypothetic co-

channel interferences)


Interference probability defined

in % of interfered area or traffic



Import of Interference Matrices

Loading of ASCII files containing C/I probabilities between pairs of victim/interferer subcells,

coming from OMC statistics or measurement analysis



4 formats supported• Clc : per pair of subcells, 1 histogram containing the

probabilities of having certain values of C/I, formatted in

columns (dictionary file .dct mandatory)

• Im0 : per pair of subcells, 1 histogram containing the

probabilities of having certain values of C/I, formatted in rows

• Im1 : per pair of subcells, 1 histogram containing the

probabilities of having certain values of C/I, formatted in

columns (no dictionary file needed)

• Im2 : per pair of subcells, 1 Interference Matrix containing

the probabilities of having C/I value lower than the min C/I

threshold defined in the victim’s subcell.




Interference Matrices properties


Displays the Interference Matrix

scope and statistics

Definition of theinterference type

User-defined parameters, set

according to the Interference

Matrix type

(Used by the AFP model for

the matrix combination)





Configuring the Atoll AFP model (1/2)

Overview

Goal and principle of the AFP

• Find optimal allocations that minimise interferences over the network and comply with a set of

constraints (separation, frequency domain limitation)

• Convergence criterion based on a cost function

• The AFP model tries to minimise the value of the cost function

Meaning of the Cost Function

• Function that enables to evaluate/compare different Frequency Plans

• Principle of this function is to check for each TRX of the loaded network if its allocated Frequency is

“good”.(i.e. if this frequency is not interfered by another TRX of the network and complies with pre-

defined separation constraints)

• IF the frequency is NOT GOOD (interfered or separation violation) THEN a cost (penalty) will be

assigned to this frequency

• IF the frequency is GOOD (not interfered and fulfil separation rules) THEN the cost (penalty) will

be null

• Based on two main components:

• States in “Interfered Erlangs”


i i i TRX

ViolationSeparation

TRX

ceInterferen

TRX

Total CCC



Configuring the AFP model = Defining how is the Cost calculated

Cost calculation (for a single TRX)

Calculated for the entire loaded network, TRX per TRX

Configuring the Atoll AFP model (2/2)


iiiii TRX

ulation Inter

TRX

DomainOut Freq

TRX

TRX Corrupted

TRX

TRX g Mis

TRX

Total mod _ _ _ _ sin CCCCC

iiii TRX

Groupeferred Out

TRX

TRX Modified

TRX

ViolationSeparation

TRX

ce Interferen _ Pr _ _ _ CCCC



Description of the Cost Function (1/6)

Based on 8 components

1. Cost component due to separation violations

• Estimation for each TRX

• Based on costs specified for the required separations

• Cost of a TRX is limited to 100% of the TRX traffic

• Possibility to weight this cost component among the other components

• Possibility to weight individually each involved TRX according to the violation type within the overall

separation violation cost component






2. Cost component due to interference

• Estimation for each TRX

• Interference criterion based on interference matrices

• Possibility to combine matrices coming from different sources (OMC statistics,

measurements, planning tool, etc.)

• Interference is considered when the C/I level between pairs of subcells is lower than the

victim min C/I threshold

• Distance criterion based on inter-transmitter distance

• Weighted according to transmitter azimuths

• Cost of a TRX is limited to 100% of the TRX traffic

• Possibility to weight each criterion






3. Cost component due to modified TRXs

• For each modified TRX, a cost is added to the total cost

• Possibility to activate or not this component

• Possibility to modify the cost value

4. Cost component due to TRXs out of their preferred frequency group

• For each TRX allocated out of the preferred frequency group defined in its subcell, a cost is added to

the total cost


• Possibility to modify the cost value






5. Cost component due to missing TRXs

• For each missing TRX, a tax is imposed per traffic timeslot and is added to the total cost


• Possibility to modify the tax value

6. Cost component due to TRXs out of their frequency domain

• For each TRX allocated out of the frequency domain defined in its subcell, a tax is imposed per traffic

timeslot and is added to the total cost








7. Cost component due to corrupted TRXs

• A TRX is corrupted when:

• More than one frequency is assigned to a non hopping TRX

• A TRX in SFH does not have any MAIO

• No channel is assigned to a TRX• …

• For each corrupted TRX, a tax is imposed per traffic timeslot and is added to the total cost








8. Cost component due to Intermodulation

• This cost component has the goal of avoiding the cases were intermodulation can cause problems.

• The Tax is applied when the combination of allocated frequencies generates a frequency already

allocated within the same site.

UL and DL frequencies are evaluated: each ARFCN carrier number refers to 2 physical frequencies:

the uplink frequency and the downlink frequency. The translation function from ARFCN to frequency is

given by the ARFCN standard.






Properties of the Atoll AFP Model (1/11)

Description of the Cost tab


Possibility to dismiss TRXs

which the cost is lower than

the quality target defined at

the subcell level

Cost of violation

separations

• Weight of the cost

component

• Weight per separation

violation type in the next

tab

Cost due to interferences

• Weight of the interferencecriterion

Costs of missing, out of

domain and corruptedTRXs

• Tax value

• Possibility to consider or

not this components

Cost of modified TRXs

• Cost per modified TRX

• Possibility to consider ornot this component

Cost of TRXs allocated out

of their preferred frequency

group

• Cost per modified TRX

• Possibility to consider or

not this component

• Preferred groups

allocated by the AFP if

pattern are allocated

Optimisation of number of

TRXs

• Parameter used with the

“Optimised” strategy

Cost due to intermodulation

• Weight of the cost

component




Description of the Separations tab


Cost of violationseparations

• Cost of a separation “k”

when a separation “s” is

required

• Stated in % of interfered

traffic

Weight on the separation

cost according to the

violation type

• Violation within co-cells

• Violation within co-site

transmitters

• Violation between

neighbours

• Violation within co-

subcells

• Violation betweenexceptional pairs of

transmitters




Description of the Interference Matrices tab


Matrix combined using

weights calculated by

multiplying three

components :

• Component quantifying

the membership to the AFP

scope (as defined in the

properties of each IM)

• Component depending on

the Interference Matrix type

Recommendation:

do not change those

values:




Description of the Interference Matrices tab



based on propagation

Basic component weighted

by the IM resolution and

the model standard

deviation


based on OMC statistics


by the duration statistics

were performed


based on OMC statistics


by the Interference Matrix

standard deviation (defined

in its properties) and the

amount of measured points




Description of the HSN tab


Possibility to allocate:

– Different HSNs to pairs of

subcells which mutually

interfere

– The same HSN to all thesubcells of a transmitter or

a site

– HSN freely with respect

to directives specified in

the MAL tab (target

fractional load and

frequency reuse)




Description of the MAL tab

Frequency reuse ratio

• Not directly linked to the reuse pattern

• Useful only in case of SFH

• Higher priority than the target fractional load

Fractional Load

• For a set of synchronised subcells sharing the same MAL, HSN and frequency domain

• Useful only in case of SFH


i

i

MALtheinsfrequencie#

MALgivenawithTRXs#

domaintheinsfrequencie#

sizeMAL




Description of the MAL tab


MAL length

(with priority order)

For the “group constrained”assignment mode (only)

– MAL = one of the groups

defined in the related

frequency domain

For any other assignment mode

– Allocate the maximum

MAL length (specified inthe subcell properties)

– Adjust the MAL length so

as to fulfil the directives 3,

4 and 5.

– 4. And 5. Directives :

target domain use ratio,

MAL length strategy andtarget fractional load

– Taken into account only if

the option “adjust MAL

length” is selected

– HSN assignment and

MAL size determination are

performed so as to obtain

the specified targets

MAL allocation type

– Possibility to assign the

same MAL or different ones

to all the subcells of a

synchronised set

– Different MAL is

recommended if a typical

pattern (e.g. 1x3) has to be

allocated

Parameter which can be

automatically calibrated by

the AFP model




Description of the Finalisation tab


Result assignment

– Manual assignment after

the allocated frequency

plan has been verified bythe user. This allocation

may only be partly

committed

– Automatic allocation of

the best obtained

frequency plan in term of

total cost (useful with auto-

save or any automaticprocedure run with Atoll

(e.g. Macros)

Target computation time

– Fixed duration : the AFP

stops when the user-

defined duration hasfinished

– Directive duration : the

AFP will adapt its method

according to this duration.

In the case of large

networks or insufficient

spectrum, this duration

may be exceeded (defaultoption)




Description of the Reuse tab


Directives on the MAIO

spacing

– Staggered: the MAIOs

assigned to TRXs of a

subcell are evenly spaced

– Free: no constraint

BSIC allocation strategy

– Minimal: the AFP

consumes a minimum

number of BSICs. The

same BSICs will be reused.

– Maximal and

homogeneous: the AFP

uses as many BSICs as

possible. The chosen

BSICs are evenly

distributed in the whole

domain.

Pattern allocation

User-defined scheme

considered only if the cost

component due to TRXs

out of their preferred group

is active and is the pattern

option is checked when

running the AFP

Channel spacing

– Automatic (lowest cost)

– Maximum spreading

– Minimum spreading




Description of the Protection tab


Interference definition

– Rigid

– Intermediate – Flexible

Additional adjacent channel

protection in interference

cost

• None : as defined in Atoll

interface (default -18 dB

compared to co-channel)

• Weak : + 1.5 dB (e.g.

16.5 dB)

• Strong (e.g. 15 dB)

Weight of the distance

criterion




Description of the Advanced tab


Interferer diversity gain(dB)

(Used in case of frequency hopping)

• Models the geographic

diversity of interferers

• Considered in the

interference and separation

cost components

• Depends on the MAL

length

Gain due to low timeslotuse ratio (dB)

• Considered or not

• Used only in case of

interferers supporting DTX


interference cost

component

• Calculated from a formula

taking into account the

voice activity factor and if

hopping or notFrequency diversity gain

(dB)

(Used in case of frequency

hopping)

• Models the gain due todiversity of multi-path

effects


interference cost

component only

• Depends on the MAL

length

Model experience

• Possibility to keepnetwork learning

parameters of the model in

the project

• Possibility to archive this

experience in database for

multi-user AFP

management



AFP tuning

Possibility to have several tuned AFP models

After the learning phase of a reference environment, the AFP can tune internal parameters

You can duplicate the AFP model as many times as you wish

Possibility to archive in database if experienced is conserved (Advanced tab)




Training Programme

1. Requirements


3. Running the AFP


5. Process Summary




Overview

Possibility to start an AFP on all the transmitters, on a group of transmitters, or on a

single transmitter

Resources that can be allocated

Channels in case of non hopping

Channels and HSNs in case of BBH

MALs, MAIOs and HSNs in case of SFH

BSICs

Step by step initialization

Select involved items (AFP model, resources to be allocated, Interference Matrix, ...)

Define separation constraintsDefine locking, traffic load, DTX and reuse distance options

Define Target Computation Time

Run the AFP and display information during progress

Analyse results

Commit the new frequency plan




Before Starting

Before running the AFP allocation, check:

Zones (Filtering, Computation and Focus) definition

Transmitters & Subcells parameters settings

Save current Frequency Plan (if any) from TRXs table

Neighbours Table not empty

Activate/Deactivate Interference Matrices




Confidential – Do not share without prior permission

Automatic Frequency Planning Process (1/14)

1st Step : Involved Items

Planning of different resources

User-defined strategies

Possibility to allocate AFP indicators

Selected AFP

model

Resources to

be allocated

Possibility to allocate

additional indicators

(depending on the model)

Possibility to run specific

allocation strategies

(depending on the model)

© Forsk 2012 Slide 39 of 79



2nd Step : Separation Constraints

Definition of inter-channel separation constraints

• Exceptional pairs

• Co-site, co-cell and neighbours distinction

• Traffic and control subcell distinction



Default

separation

rules

Highest priority separation

rules (relax or increase the

default separation

constraints



3rd Step : Advanced AFP Settings

Selection of the subcell type to be allocated

• Only selected types may have their TRXs created or re-allocated

• Other subcells are considered locked for this allocation

Possibility to lock existing TRXs regarding to their TRX type

Traffic load source (user-defined or from the default capture)

Consideration or not of the DTX mode (+ voice activity factor)

Consideration or not of the reuse distance constraint on channels and BSICs

• If available, the AFP takes into account the transmitter reuse distance (optional field to be added to the

Transmitters table), Otherwise, it will consider the default reuse distance





3rd Step : Advanced AFP Settings






4th Step : Loading and Checking The Network

Network loading

• The transmitters to be allocated : “TBA” transmitters

• Active and filtered transmitters which belong to the transmitters folder for which the AFP was

launched and to the focus zone (if existing or otherwise to the computation zone) as well

• The potential interferers with TBA transmitters if the option “load all interferers propagating in the focuszone” (or in the computation zone if not defined)

• The transmitters involved in the specified separation conditions with TBA transmitters

• Neighbours, co-site transmitters, transmitters or subcells of exceptional pairs, neighbours of

neighbours in case of BSIC allocation





5th Step : Last Settings Before Starting AFP

The strategy used by the

AFP model depends on the

specified time

The path to a solution is

initialised by a seed

number

Network consistency checking

• Non-blocking warnings : values

out of range, inconsistencies of the

existing allocation

• Blocking errors : empty domains

Event viewer





6th Step : Verifying AFP Progress

AFP progress dialogue – General tab


AFP time progress

AFP real time cost

evolution





AFP progress dialogue – Quality Indicators tab


Costs and components of all

the solutions having improved

the frequency plan




AFP progress dialogue – Distributions tab



Initial and best cost

distributions of frequencies

Initial and best usages of

frequencies




7th Step : Analysing Allocation Results

AFP output dialogue : Summary tab


Initial and final AFP cost given

in term of correctly served

traffic (Total traffic – Total cost)

AFP Time information

Costs and components of all

the solutions having improved

the frequency plan




AFP output dialogue : Allocation tab



Possibility to

resume or assign

the obtained

frequency plan

AFP Allocation

Result Grid

Event Viewer

Summary

AFP results

options




AFP output dialogue : results grid of the allocation tab



Resource coloured according

to its allocation status

Information on separation

violation

Possibility to delete or keep

existing/initial allocation

Allocated resources





AFP output dialogue : result options of the allocation tab


Information to be displayed

in the allocation grid

Reset plan to previous one

Export results in text files

Deletion of TRXs violating

separation constraints




AFP output dialogue : Subcells tab


Cost components and AFP

indicators (possibly

depending on the selected

strategy when having run

the AFP) before and after

the allocation





AFP output dialogue : Distributions tab



Initial and final cost

distributions of frequencies

Initial and final usages of

frequencies



Training Programme

1. Requirements


3. Running the AFP


5. Process Summary




Analysing a new Frequency Plan

Interactive Frequency Planning

And also...

Find on Map Tool

Channels distribution histogram

Interference Predictions

Point Analysis Tool




Interactive Frequency Planning Overview

Aim : verify the current frequency allocation

For each single transmitter• Interactively propose alternative solutions to the current allocation

• Addition of new TRXs by selecting the most appropriate channel(s)

Selection of an available AFP model

Use of an AFP license

Use of the settings of the selected AFP modelUse of the active Interference Matrices

AFP : selection of channels according to the lowest overall cost over all the network

IFP : selection of channels according to the lowest cost obtained on the selected transmitter

Powerful graphic user interface

Variable thickness arrows to each interfered or interfering transmitterThickness defined according to interference probability

Possibility to filter transmitters according to their contribution to the AFP cost


All i d Ch l A l i (1/5)



Allocation and Channel Analysis (1/5)


IFP running

command on the

selected subcell

Selection of a

transmitter and

a TRX type

Selection of

an AFP

model AFP properties,

settings and

related tables

All ti d Ch l A l i (2/5)





Selected subcell

actual allocation

Alternative

allocations and

associated cost

Filtering

according to

components and

probabilities

AFP cost

components and

indicators






Selected subcell

actual allocation

Alternative

allocations and

associated cost

AFP cost

components and

indicators

Filtering

according to

components and

probabilities






Selection of an

alternative channel

Commit of the new

channel allocation






Selection of a

different subcell

Case of 1 missing

TRX

Actual considered

item (new TRX)

Commit of the TRX

creation

Selection of the channel to

be assigned to the new

TRX

I t f M t i A l i



Interference Matrix Analysis


Using the same

interface, possibility

to analyse the IM

probabilities for a

given subcell

Analysis in case the

selected subcell is

either victim or

interferer

Probability given forco-channel or

adjacent channel

interferences

Victim or interferer

filtering

Interference

probabilities

N t k C i t Ch ki



Network Consistency Checking

Tool to check the consistency of a network

Recommended after an automatic or manual allocation Available by selecting frequency plan and audit… in the transmitters folder context menu

Consistency checking performed on

The active and filtered transmitters which belong to the transmitters folder for which the audit

was launched and to the focus zone (if existing or otherwise to the computation zone) as well

:“TBA” transmitters The potential interferers with TBA transmitters if the option “load all interferers propagating in

the focus zone” (or in the computation zone if not defined)

The transmitters involved in the specified separation conditions with TBA transmitters

(neighbours, co-site transmitters, transmitters or subcells of exceptional pairs, neighbours of

neighbours in case of BSIC allocation)

Systematic checkingUnique BCCH TRX per transmitter, consistency TRXs/cell types, …

Additional checking on frequencies, HSNs and/or BSICs

Domains compliance, separation constraints, no empty domain, (BSIC-BCCH) checking, …


Find On Map Tool (1/4)




Tool to visualise channel and BSIC reuse on the map

Possibility to find transmitters which are assigned a given :

• Channel (of a specified type – broadcast or not)

• BCCH-BSIC pairs

• HSNs

• MAIOs

• Any combination of any resource

Possibility to generate a report listing all the transmitters that use the searched channel (co-channel) and its adjacent channels

Possibility to generate a report listing all the transmitters that use the searched (BSIC-BCCH)

pair

Possibility to generate a report listing all the transmitters that use the searched (Channel-

HSN) pair

Way to use this tool

Create and calculate a coverage by transmitter with a colour display by transmitter

Open the Find on Map tool available in the toolbar






Channel Reuse on the Map

Select the “GSM Channel” option


Colours given to transmitters

• Red: co-channel transmitters

• Orange: co-channel transmitters and different subcell

• Yellow: multi-adjacent channel (-1 and +1) transmitters

• Green: adjacent channel (-1) transmitters

• Blue: adjacent channel (+1) transmitters

• Grey + Thin Line Symbol: other transmitters

Search type

Search

options




BSIC-BCCH Reuse on the Map

Select the “BSIC-BCCH Pair” option




• Red : searched transmitters

• Grey : others

Search type

Search options

(BSIC given in value

or in NCC-BCC)




Channel-HSN Reuse on the Map




• Red : searched transmitters

• Grey : others

Search type

Search

options

Frequency Histograms



Frequency Histograms

Display of the Frequency Distribution

Available by selecting frequency plan and channel distribution… in the transmitters folder

context menu


Interference Predictions (1/5)




Interference Condition

Interference studied on a TRX type (or All)Calculation of C/I and comparison with upper and lower thresholds

• Subcell or user-defined C/I thresholds

Optional Interference Computations

• Consideration or not of the receiver noise N (or user-defined value)

• Consideration of C/I levels satisfied by at least one TRX or the worst one

• Possibility to evaluate interference level on a specific channel

• Separated study of the contribution of co and/or adjacent channels, external sources of interferences(e.g. UMTS network)

• Modelling of the DTX with a voice activity factor

• Consideration of the traffic load per subcell

• Detailed results

• NH : per TRX type

• BBH : per TRX type and MAL

• SFH : per TRX type and MAL-MAIO

Colouring depending on attributes

C/I level, Max C/I level, Min C/I level

Transmitter

Any transmitter attribute...






Coverage by C/I Level Prediction

Global analysis of the network quality

Filter the useful

signal

Filter C/I

values


Interference

calculation options




Coverage by C/I Level Prediction


Overlapping zones

with a lower quality

(low C/I)






Interfered Zones Prediction

Areas where a Rx is interfered

Interference

calculation options© Forsk 2012 Slide 72 of 79Confidential – Do not share without prior permission

Filter the useful

signal

Filter C/I

values

Threshold under which

interferences are

considered





Interfered Zones Prediction


Areas where the receiver is

interfered (where the C/I is lower

than the user-defined threshold)

on the HCS server areas

Point Interference Analysis (1/3)




Interference Window of Point Analysis Tool

Selection of potentially interfered transmitterIndoor reception or not (receiver located indoor)

Filter on interfered TRX type (or all)

Filter on interferers

• Possibility to consider any combination of co-channel, adjacent channel or external interferences (e.g.

UMTS network)

Possibility to consider or not the receiver noise N

Analysis

• NH : per TRX type

• BBH : per TRX type and MAL

• SFH : per TRX type and MAL-MAIO

Std deviation type (model or C/I) + Cell Edge Coverage Probability

Reduction factor on signal and interference levels represented by partly filled bars

• Interfered reception bar: reduction due to power offset

• Interferer reception bars: reduction due to power offset, adjacent channel protection level, fractional

load, mean power control

Display on the map of interferers and related contributions to total interference

• Differentiation between co-channel and adjacent channel interferers







Interference Tab in Point Analysis Window

Display of co-

channel

interference

Signal level

(C) of the

potential

victim at thereceiver

Transmitters participating in

the noise determination

Resulting C/I or C/I+N value

Studied

transmitter,

subcell and

TRX

Received noise

(I) from

surrounding co-

and adjacent

channels at the

receiver

Interference area

based on C/I

conditions


Display of

adjacent channel

interference

Interference

types





Details Tab in Point Analysis Window


Signal level and

interference level

for each received

transmitter on the

receiver location


Interference area

based on C/I

conditions

Training Programme



Training Programme

1. Requirements


3. Running the AFP


5. Process Summary


Process Summary



Process Summary

1. Fix Network Configuration (Antenna height, azimuth, power, ...)

2. Define Transmitters to be taken into account (Computation Zone, Activity...)

3. Define Frequency, BSIC & HSN Domains (Parameters tabGSM Network Settings)

4. Set Network Parameters dealing with AFP (Assign Domains, Required No. of TRXs...)

5. Calculate/Import Neighbour Plan

6. Calculate/Import Interference Matrix(ces)

7. Define AFP model settings (define the Cost calculation function)

8. Run the AFP allocation and commit results

9. Analyse the new Frequency Plan




THANK YOU!

Documents

Atoll 3.1.2 Gsm Gprs Edge Afp