09 - LTE Planning Tool-ATOLL[1]

5/27/2018 09 - LTE Planning Tool-ATOLL[1]

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1 Nokia Siemens Networks LTE Radio Planning ToolATOLL / Jose Maria Anarte / v1.0 / Document Number

For public useIPR applies

LTE Radio Planning Tool - ATOLLLTE Radio Planning Essentials course


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2 Nokia Siemens Networks LTE Radio Planning Tool - ATOLL / Jose Maria Anarte / v1.0 / Document Number


Nokia Siemens Networks Academy

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Module Objectives

After completing this module, the participant should be able to:

Describe the basic settings and options in the ATOLL radio planningtool for LTE

Examine the Traffic Modelling ATOLL

Revise the Monte Carlo Simulations done with ATOLL

Explain the MIMO setting in ATOLL

Understand how to produce Traffic Maps with ATOLL


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Module Contents

ATOLL for LTE: Basic Concepts & Settings

Traffic Modelling

Monte Carlo Simulations

MIMO in ATOLL

Creating Traffic Maps in ATOLL


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Module Contents

ATOLL for LTE: Basic Concepts & Settings

Traffic Modelling


MIMO in ATOLL



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Explorer

Window

Map

Window

Point

Analysis

Window

Legend

Window

Panoramic

View

Atoll GUI

Atoll GUI


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Network Design Workflow




LTE Planning with ATOLL - STEPS

1.- Open Network plan

2.- Set computation zone (Polygon in red))

To have clear definition of analyzed area To reduce calculations




Network Design (1/2)

Networks consist of Base Stations ( eNodeB) comprising

Sites = Locations Geographical locations of base stations

Can support one or more transmitters

Sites database can be shared with Atoll Microwave

Transmitters = Radio Aerials

Comprises radio transmission/reception parameters and antennas Can handle one or several antennas and MIMO systems

Can be linked to a TMA, feeder cables, and other equipment

Can have up to two path loss matrices: a high-resolution path loss matrix forprecise results near the transmitter and a low-resolution path loss matrix for

interference calculation far from the transmitter Supports cells (carriers) with parameters defined at cell level

Other base station parameters Cyclic prefix, PDCCH and PUCCH channel overheads, switching point

periodicity for TDD frames, uplink power control margin

Network Entities in ATOLL (1/2)




Networks consist of Base Stations (eNodeB) comprising

Cells = Radio Channels Hardware unit supporting an RF channel, i.e., 1 cell = 1 carrier

Has a certain traffic capacity limited by the channel bandwidth

Main properties of a Cell:

Channel (frequency band, channel number, and bandwidth)

Transmission power Reception equipment

Scheduler

Maximum number of simultaneous active users

AMS threshold (Adaptive MIMO Switching)

Uplink and downlink traffic loads Uplink noise rise

TDD frame configuration

Antenna diversity support (Transmit Diversity, Spatial Multiplexing, AMS)

Neighbours

Network Entities in ATOLL (2/2)




Path Loss Settings




Definition of LTE Network Parameter Settings (1/2)

Frequencies

LTE Bearers

Coding Schemes & Modulation

Coding Rate

Bit/symbol

Quality Indicators BLER, BER, PER

Schedulers

MIMO Configurations

Global Parameter Settings (PC, Fixed Contr. ChannelOverhead) via Properties




Definition of LTE Network Parameter Settings (2/2)

Services

Use/define/edit the service according their behavior

FTP Download

VoIP

Video Conferencing

Web Browsing Any other profile if needed

User Profiles

Possible to define different kind of users which differ in service usagepattern.




Atoll can model multi-band networks within the same document

Pre-defined frequency bands

Possibility to easily create / modify frequency bands Support for multiple channel bandwidths and different sampling frequencies

TDD and FDD frequency bands supported

LTE Frequency Bands




LTE Radio Bearers Settings

LTE Radio Bearer = Modulation and coding scheme

User-selectable modulations (e.g. BPSK, QPSK, 16QAM, 64QAM)

User-definable coding rates (e.g. 1/2, 2/3, 3/4, etc.)

User-definable bearer efficiencies (useful bits per symbol)




LTE Bearers: NSN Setting (in line with dim tool)

User bits permodulation symbol as

per dimensioning tool

Bearer efficiency divided by# bits per modulation

symbol (2 for QPSK, 4 for

16QAM and 6 for 64QAM




LTE Link Adaptation

LTE Performance for different Modulation and Coding Schemes combinations


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Reception (UL/DL) Settings (1/3)

Reception Equipment

Bearer selection thresholds forautomatic link adaptation basedon CINR values (Figu re 1)

Channel quality indicator graphsbased on CINR values (Figu re 2& 3 on next sl ide)

Peak Channel Throughput(without errors) / EffectiveChannel Throughput (witherrors). Both of them are used tomodel reception characteristicsat the mobile (DL) and at the cell

(UL).

(Figure 1)


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(Figure 2)

(Figure 3)


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ATOLL

Setting of NSN MCS modulation thresholdsto be in line with dimensioning tool (or otheragreed data).


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Base stations and user equipment support MIMO systems

Numbers of transmission and reception antenna ports at thebase station and user equipment

Modelling of three MIMO systems: Transmit diversity

Spatial Multiplexing

Adaptive MIMO Switch (AMS)

Multiple Input Multiple Output Systems (1/2)


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Transmit Diversityimproves theC/(I+N)Usually used in coverage areas

with bad radio conditions

Spatial Multiplexingimproves

throughputUsually used in coverage areas

with good radio conditions

AMS-capable equipmentcan switchfrom Spatial Multiplexing to TransmitDiversity as the radio conditionsworsen

Multiple Input Multiple Output Systems (2/2)


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Services

Modelling of Voice and Data services Support for service prioritiesconsidered for scheduling and RRM

Modelling of traffic demand parameters:

Minimum throughput demand = GBR

Maximum throughput demand = MBR Activity factor for voice type services

Modelling of application layer overheads

Mobility Types

Modelling of mobile speed

Used for bearer selection, and channelquality indicator graphs

Services Settings


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Terminal Equipment Properties (1/2)

UE properties

Reception equipment

Minimum and maximum transmissionpowers

Gain, losses, and noise figure

Antenna

You can assign a directionalantenna which is considered incalculations

Optional MIMO support

Number of transmission and receptionantennas (MIMO)


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Terminal Equipment Properties (2/2)

User Properties

Define service usage characteristics for different types of users


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Module Contents

ATOLL for LTE: Basic Concepts & SettingsTraffic Modelling


MIMO in ATOLL



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Live Traffic Data

Vector Traffic Data

Raster Traffic Data

Subscribers

Traffic Modeling

Traffic can be modelled using traffic maps and subscriber lists

You can work with different types of traffic maps: Raster traffic maps

Vector traffic maps

Live traffic maps

Traffic density maps


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Subscriber Lists

Contain lists of fixed subscribers with related parameters

Used for Fixed Wireless Access (FWA) network design

Subscriber lists can be created using the mouse or imported from txt orCSV files

Can be displayed on the map according to different parameters

Main parameters: Subscriber ID

Subscriber Name

Location: X and Y coordinates

Height of the antenna

User profile (services usage) Terminal type (can use a directional antenna)

Serving transmitter and cell (user-defined or calc.)

Azimuth and downtilt (user-defined or calculated)

Calculations on Subscriber Lists (1/2)


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Calculations on Subscriber Lists (2/2)

Results include:

Serving transmitter and cell

Azimuth and downtilt towards the serving cell Received power from other cells at the serving cell

DL and UL C/(I+N) values, bearers, channel throughputs, diversitymode, etc.


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Signal level based coverage plots: Best server plot

Coverage by signal level

Multiple server coverage

RSRP and CNR coverage plots

LTE-specific CINR-based coverage plots: Based on user-defined cell loads or on Monte Carlo simulation

results

A default UE is considered that may have a directional antenna

(oriented towards the serving cell)

DL and UL CINR and interference plots DL and UL best bearer coverage plots

DL and UL throughput coverage plots

Peak and Effective RLC Channel Throughputs

Application Level Channel Throughputs

Coverage Prediction Plots (1/3)


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Coverage by Signal Level

Number of Servers

Coverage Prediction Examples (2/3)


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Coverage by DL CINR

Coverage by UL CINR

Coverage Prediction Examples (3/3)


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HISTOGRAM BY PULL DOWN MENU

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C/(I+N) Level (DL) (dB)


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Module Contents



MIMO in ATOLL




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Can be performed in order to study the networkresponse to a given amount of traffic

Can be based on traffic data from traffic maps

and subscriber lists A snap-shot analysis of the networks behaviour

under traffic conditions

Monte Carlo distribution of mobile users andservices

Calculation of user parameters (CINR, powercontrol,noise rise, resource allocation, etc.)

Scheduling and Radio Resource Managementbased on service priorities and differentschedulers:

Proportional FairProportional Demand

Max Aggregate Throughput

Allocation of resources according to servicepriorities


Monte Carlo Simulation Results


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For each cell UL and DL traffic loads

UL noise rise Calculation of aggregate cell throughputs for UL and DL

(Peak RLC, Effective RLC, and Application Level)

Other results and statistics

For each mobile Serving transmitter and cell

Azimuth and downtilt (towards the serving cell)

Received power from and at the serving cell

DL and UL C/(I+N)

DL and UL best bearers DL and UL channel and user throughputs

UL transmission power

Number of used resource blocks in UL

Other results

Monte Carlo Simulation Results

M t C l Si l ti R lt Di l bil


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Monte Carlo Simulation Results Display - mobiles

Si l ti O t t C ll l l


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Simulation Output Cell level

Detailed information regarding cell throughput and cell load

Sitelevelstat.

Mobile/userlevel stats

M d l C t t


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Module Contents



MIMO in ATOLL


MIMO id ti i ATOLL (TX di it


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MIMO consideration in ATOLL (TX diversity, nonAMS case)

MIMO Gain application in non AMS case

The gain is applied as correction to the SINR (which is further correctedby clutter specific factor - Transmit Diversity Gain Offset [dB] in ClutterMenu). The formula is applied/valid for all SINR. The gain is applied as dBcorrection to manipulate final SINR further used for bearer assignment.

Same construction is used in UL and DL. However, tool allows to enterdifferent values to specify UL and DL.

MIMO id ti i ATOLL (AMS )


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MIMO consideration in ATOLL (AMS case)

MIMO Gain application in AMS (adaptive MIMO switch) case:

The gain is applied as correction to the SINR (which is further corrected by clutterspecific factor - Transmit Diversity Gain Offset [dB] in Clutter Menu). The formulais applied/valid for all SINR. The gain is applied as dB correction to manipulate finalSINR further used for bearer assignment. HOWEVER, The formula is applied/validonly for FIRSTLY CALCULATED SINR (SINR without any previous gain

corrections) being BELOW SM switch threshold. The gain is applied as dBcorrection to manipulate final SINR further used for bearer assignment.

If not the case, there are not applied SINR corrections ,but thereis applied SM Gain defined by Max MIMO Gain Graph (in MIMO cfg menu, globalparameter) further weighted by clutter specific Spatial Multiplexing Gain Factor(between 0-1). The gain is applied as muliplicative factor towards Bearer Efficiency

(i.e. towards bearer throughput).

Same construction is used in UL and DL. However, tool allows to enter differentvalues to specify UL and DL.

S tti f MIMO 1) t/ t SISO b


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Settings for MIMO 1) set/enter SISO bearersMCS thresholds for DL

ATOLL

S tti f MIMO 2) t/ t SISO b


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Settings for MIMO 2) set/enter SISO bearersMCS thresholds for UL

ATOLL

Settings for MIMO 3) set the UL and DL gains


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Settings for MIMO 3) set the UL and DL gains

Default div. gains 2x2 MIMO 8.2 dB, diversity 1X2 4 dB, as per dimensioning tool

TotalMIMO

gain to be

applied,including3 dB Txpower

increase

Setting of MIMO 4) with SM (Adaptive MIMO


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Setting of MIMO 4) with SM (Adaptive MIMOSwitch)

Value of AMS switch have to be entered

Cell to be AMS enabled (Diversity Support)

Proposed default 15dB or higher (LTE Performance SFSspeaking about SM with connection of 64QAM modulation,which might appear for SINR above 15dB, however valuearound 22-23dB is more realistic).



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Effect of Spatial multiplexing Throughput increase are modeled by

Max MIMO Gain graph

(multiplicative factor to weight

bearer efficiency> throughput)



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Possible effect of Spatial multiplexing throughput increase are

modeled by the clutter specific Spatial Multiplexing GainFactor (multiplicative factor to weight bearer efficiency throughput)

Settings for MIMO 7) Condition MIMO to be used


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Settings for MIMO 7) Condition MIMO to be used

User have to use MIMO feature

MIMO terminal to be defined 2 RXand 1TX antenna to have DLMIMO (2x2) and UL TX diversity -

SIMO (1x2)

MIMO INPUT VALUES SUMMARY


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MIMO INPUT VALUES SUMMARY

KEEP THE VALUES IN LINE WITH DIMENSIONING TOOL, so.

UL noise figure (BTS) 2.2 dB

DL noise figure (UE) 7dBDefault div. gains diversity (1X2): 4 dB

MIMO (2x2): 8.2 dBconsists of 4 dB reception diversity, 3 dB TX powerincrease and 1.2 dB MIMO receiving gain over reception diversity.

Clutter specific offsets 0dB (i.e. no impact)

MAX MIMO GAIN (Capacity gain due to SM)between 1(no capacitygain) and 2(doubling capacity), so about 1.5.

Clutter specific offset 1 (i.e. no impact)

Adaptive MIMO Switch Threshold cca 15dB (LTE Performance SFSspeaking about SM with connection of 64QAM modulation, which might

appear for SINR above 15dB, however value around 22-23dB is morerealistic)

LTE Bearers as per NSN dimensioning tool

UL and DL MCS thresholds as per NSN dimensioning tool (EPS05Channel, column for SISO (1x1))

MIMO LIMITATION WITH CURRENT ATOLL


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MIMO LIMITATION WITH CURRENT ATOLL -FORSK COMMENTS (NOV 2008)

In the current version of Atoll, AMS (Adaptive MIMO Switch) Threshold

is applied on UL and DL in any configuration

In the commercial version of the LTE Module (Atoll 2.8.0 - end of2008), it will be possible to set MIMO configurations (STTD, SM, AMS,none) on DL or UL independently.

That's partially why the current version is just a "beta / pre-release"LTE version.

NOTEcommercial version without the above limitation from 1Q09

Module Contents


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Module Contents



MIMO in ATOLL


Creating Traffic Map in ATOLL


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Creating Traffic Map in ATOLL

1. Create a new traffic map: "Map based on environments"

2. Then select in the toolbox a type of environment, denseurban" for example and draw a polygon. Hit "close"

3. Go to the data tab and edit the environment in the LTEparameters folder. On the second tab, you have "clutter

weighting". Here you can set up a weighting based onclutter classes

4. At this moment traffic map have been created and the clutterweighting set here will be taken into account during anycalculations.

5. Map is there and is possible to use for simulations, but it isinvisible on GUI window as map. To see the map it isnecessary to export and import the mapsee next slide.

Visualization of created traffic map


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Visualization of created traffic map

1. Go back to the geo tab, right click on traffic folder then

"export cumulated traffic".2. Select a format (bil for example)

3. Then you can choose the export zone (entire area orcomputation zone) and the traffic map you wish to export.

4. If you want to really see the result, you have now to importthe traffic map.

5. File / import and the select traffic density as map type.

Export of Cumulated Traffic


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Export of Cumulated Traffic

Which areatraffic is coming

from

Which traffic

density map(s)are used

Traffic isdefined perservice (if

service mix,

than more than1 traffic mapexists)

Traffic Map Creation traffic per transmitter input


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Traffic Map Creation traffic per transmitter input

Whole traffic table ispossible to import

Import/Create Traffic Map based on per user


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Import/Create Traffic Map based on per userrequested throughput per service

Traffic Importing


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Traffic Importing

Imported Traffic distribution between terminal


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Imported Traffic distribution between terminaltype, mobility and indoor/outdoor percentage


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59 Nokia Siemens Networks LTE Radio Planning ToolATOLL / Jose Maria Anarte / v1.0 / Document NumberFor public useIPR applies

Appendix

Notes


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Notes

Following topics are suitable to be moved to the appendix area:

1.- MIMO in ATOLL

2.- Creating Traffic Maps in ATOLL

Documents

09 - LTE Planning Tool-ATOLL[1]