Atoll User Guide

Transcript

 Atoll User Guide Guide Before Using Atoll We need some preparation before using Atoll to do the planning or simulation, as listed below: Digital map data; including DTM, clutter, vector data, road map, etc ite informatio information n data; data; which which is including including the site name, longitude, latitude, antenna height, antenna azimuth (bearing), frequency and BSIC for GSM simulation, antenna tilt etc  Antenna data; this includes the vertical!hori"ontal vertical!hori"ontal polari"ation, gain, and beamwidth# We can download this data from the antenna manufacturer website# $%uipment data; such as feeder length, feeder loss, e%uipment &'T( transmit power, etc, which is needed to do lin) budget simulation#     Atoll Installation  Atollus!"#!"#"e$e and follow the instructions# ou *# tart tart Atol Atolll instal installat lation ion b+ b+ runnin running g the  Atollus!"#!"#"e$e must restart +our computer after the installation# Files\Forsk\Atoll after -# .op+ S$%!&dll  into  into C:\Program Files\Forsk\Atoll  after +ou restart the computer# /# Atoll Atoll sho should uld be wor)in wor)ing g now now## Starting Atoll Project – GSM/GPRS This guide will cover how to start GM pro0ect# 'elow is detailed e1planation:   tart Atoll and choose 'ile  *e&  'rom a +ocument em-late # .hoose one of the 2ro0ect Templates according to +our pro0ect# 3n this case we will use GSM G./S 0G./S  template# 'efore we start importing such as digital map or site info data we have to set the coordinate and its format# Go to ools  1-tions  The 4ptions dialogue bo1 will appear#  We must choose the right 2ro0ection and Displa+ &coordinate s+stem( in order to get the correct position of the map and the sites# 5or 2ro0ection and Displa+ coordinate s+stem +ou must refer to the 6$ADM$ file of the map +ou7re using# The+ usuall+ provide the coordinate s+stem in that file &for e1ample: WG89 orth hemisphere(# 2racticall+, +ou might need to do some e1periment with some pro0ection until +ou find the correct one &in case the map don7t provide +ou with this# Importing Digital Map Data    We assume in this case we have three digital map, which are: .lutter, eight, and athrein, +ou can find them in http:!!www#)athrein?scala#com!librar+!rplib!inde1#php# The easiest wa+ is to download the 2lanet format# 3t7s basicall+ a te1t document and +ou can open it b+ $1cel# 3n this file, we can find the manufacturer, operating fre%uenc+, hori"ontal!vertical beamwidth, gain, and the radiation power for each angle &vertical @ hori"ontal(#    To import or create the antenna in Atoll, right clic) in the Antenna in the Explorer bar and select New# Creating ne& antenna and Antenna .ro-erties    Antenna properties dialogue bo1 will appear, fill it according to the downloaded antenna pattern files# 'e careful with the Gain value# Ma)e sure the value in the file is alread+ in d'i, if  it is not then convert it b+ d'i  d'd B -#*8# To fill the Horizontal Pattern, first we have to cop+ the radiation pattern &9 ? /C9( from downloaded antenna file# 2aste the /C9 degree pattern into CoPolar !e"tion  according to the Angle and Att# 2lease ma)e sure +ou clic) in the red s%uare before paste# .op+ from antenna file .lic) in the red rectangle and paste   The #erti"al Pattern is the same with the hori"ontal# 5or the beamwidth in the $t%er Properties, fill it according to the value from antenna file &such as C8 or E9 deg(#  After that confirm it b+ clic)ing 4># The antenna names will then appear in the Antennas data tab# We can chec) it b+ double?clic)ing the Antenna name, below is the e1ample &C8 deg  Andrew antenna( : Importing Site Info Data       We can use the e1isting site info data to be imported in Atoll# The easiest wa+ is to save the site info in TFT or .< format so Atoll can read it# 2repare +our site info data &F=( and save it into TFT or .<# Ma)e sure all the important parameters are included in the file# Go to the Data  tab in the Explorer window and right clic) in the !ites# .hoose 1-en able# 6ight clic) in the window that appear and choose &mport# =ocate the TFT files containing the site info and open it# The &mport dialogue bo1 will appear# Do some correction in the Field 'apping bo1 b+ chec)ing the !o(r"e and Destination, whether it7s needed or whether it7s being mapped to the correct column# We can ignore the other unused column# Atoll will not import those ignored column# 2lease note, that in this step the most important things is the iteame &ame( and the =ongitude!=atitude column &the+ must be e1ist(, while the rest can be ignored#    After chec) all the column, clic) &mport# The sites should be plotted correctl+ in place# 3f it7s not, then ma)e a chec) at the .oordinate +stem setting# ou can &optionall+( do some configuration with the appearances of the sites# impl+ right clic) in the !ites in the Explorer bar and choose Properties# Then +ou can modif+ the font, s+mbol, etc in the Displa) tab# Importing the Transmitter Data      3n Atoll, importing ite is 0ust importing the site location or position# The rest parameter such as antenna, fre%uenc+ plan, a"imuth, etc must be imported into the *ransmitters# Go to the Data tab and right clic) at the *ransmitters, choose $pen *able# 6ight clic) in the new window and choose &mport# =ocate +our TFT!.< file and open it# The &mport dialogue bo1 will appear# Do some correction in the Field 'apping bo1 b+ chec)ing the !o(r"e and Destination, whether it7s needed or whether it7s being mapped to the correct column#  'elow is the most important column that is needed for simulation in Atoll# ou can also find the e1planation# Make sre these colmns e!ist in "or cell info # Col(mn !ite *ransmitter A"ti0e Antenna Heig%t 2m3 Azim(t% 2deg3 'e"%ani"al Downtilt 2deg3 Additional Ele"tri"al Downtilt 2deg3 E&4P 2d5m3 Power 2d5m3 6osses 2d53 Feeder E7(ipment *ransmission Feeder 6engt% 2m3 Explanation *%e site name e+g+ ,-,.., CellName or se"tor e+g+ ,-,..,/, $n air stat(s Antenna t)pe1 m(st be listed in t%e Antenna data tab Antenna %eig%t Azim(t% or bearing 'D* ED* Antenna E&4P 5CCH power 6ea0e t%is blank1 "al"(lated later Feeder diameter e+g+ 89; Heig%t < = 2m3 5CCH 5!&C 5CCH A4FCN 5!&C>NCC<5CC     After the entire Transmitter is correctl+ imported, we can ma)e some ad0ustment to the sites appearance b+ right clic) at *ransmitters and choose Properties# Go to the Displa) tab in the *ransmitters properties  dialogue bo1# .hoose  Automatic   in Displa+ t+pe and we can change the transmitter displa+ b+ clic)ing in the cells that contains arrow image# 4ne case if +our cell info data contain '.. power or 'T power, then this column must be mapped into the 2ower   2d5m3 in Atoll# 'ut, if the power not appears after importing then we should do this# 5irst, import the '.. power from the cell file as E&4P 2d5m3# Then clic) in the E&4P 2d5m3  column header and .trlB.# econd, clic) 2ower &d'm( column header and .trl B <# Copy data from EIRP (dBm) and paste in Power (dBm)   After the import success, we must calculate the =osses# 6ight clic) in the Transmitter and select $%uipment ? 6ecalculate =osses# We can chec) the Propagation Mo#el This guide assumes that the propagation model is uniform in the entire networ)# owever in the real case the propagation model should be different according to the clutter t+pe: urban, suburban, or  rural# The commonl+ used propagation model is 4)umura H ata# 'elow is how to set 4)umura?ata as the propagation model# 6ight clic) in the *ransmitter and select Properties# 3n the Propagation tab, select 4)umura?ata in the 'ain 'atrix; Propagation 'odel drop?down list#    .hange the 4adi(s or 4esol(tion depends on the simulation and digital map resolution# $%&'RAG' A(D I(T'R)'R'($' SIMU*ATI%(    Go to the Explorer bar, Data tab, and right clic) in Predi"tions# elect Properties# .hoose the De?a(lt Propagation 'odel  and De?a(lt 4esol(tion# .onfirm it b+ clic)ing 4># 6ight?clic) in the Predi"tions and select New#  elect Co0erage b) !ignal 6e0el in tud+ T+pes then confirm it b+ 4># The new dialogue bo1 will appear# 3n the General tab fill the Name  and 4esol(tion  according to +our previous setting#    3n the Condition tab, set the parameter as below: o !er0er : 5est !ignal 6e0el o !%adowing taken into a""o(nt : "%e"ked o @it% a margin :  d5 or own setting o &ndoor Co0erage : "%e"ked in t%e (rban9s(b(rban sim(lation o Cell Edge Prob : B. ?or dense "it)1 = ot%er o 4e"eption ?rom !(b"ells : 5CCH 3n the Displa)  tab choose Displa) *)pe: #al(e inter0als  and Field: !ignal 6e0el 2d5m3# We can modif+ the range and color using the A"tions button to match with the operator needs# .onfirm b+ 4># The new prediction should appear under the Predi"tions# 6ight?clic) in the new prediction and select Cal"(late# Atoll should be starting to calculate and might ta)e several minutes to complete# Co2erage simulation Interference Simlation +$/I,   6ight clic) in the Predi"tions and select New# 3n the !t(d) *)pes dialogue bo1 select Co0erage b) C9& 6e0el#  5ill the ame and 6esolution according to +our previous setting#  3n the Condition tab, set the parameter as below: o !er0er : 5est !ignal 6e0el o !%adowing taken into a""o(nt : "%e"ked o @it% a margin :  d5 or own setting o &ndoor Co0erage : "%e"ked in t%e (rban9s(b(rban sim(lation o Cell Edge Prob : B. ?or dense "it)1 = ot%er o &nter?ered !(b"ells : 5CCH   Displa+ tab: we can ad0ust it according to the operator needs# The new prediction should appear under the Predi"tions# 6ight?clic) in the new prediction and select Cal"(late# Atoll should be starting to calculate and might ta)e several minutes to complete# Interference simulation