epmp capacity planner guide r2.3

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ePMPCapacityPlannerGuide

Release2.3

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ePMPSeriesintroduction ThepurposeofthisdocumentistoprovideaquickdescriptiononhowtousetheePMPCapacityPlanner.TheCambiumNetworksePMPSeriesisawirelessaccesssystemdesignedtocreatearadiolocalareanetwork(RLAN)throughmicrowavelinksinapointtomultipoint(PMP)modeorapointtopoint(PTP)modeoperatinginthe2.4and5GHzunlicensedbands.TheePMPCapacityPlannercanofferaquickhelptodeterminetheexpectedperformancesintermsofdistancesofanePMPSeriessystemoperatinginlineofsight(LOS),nearlineofsight(nLOS)ornonlineofsight(NLOS)propagationconditionaccordingtotheconfigurationofseveralsystemparameterslikechannelbandwidthandantennaselection.TheePMPSystemcreatesapointtomultipointorapointtopointwirelessbroadbandconnectiontransmittingaradiosignalwithOFDMmodulationandMIMOtransmissiontechnique.OFDM(OrthogonalFrequencyDivisionmultiplexing)isamulticarrierradiosignalmodulationbasedonthesubdivisionofthebroadbandchannelintoorthogonallypositionedsubcarriers,eachofwhichismodulatedbasedonaconventionalmodulationscheme.WiththeOFDMtechnique,averyhighdataratecanbeobtainedincreasingthesystemsspectrumefficiency.ThefollowingarethesubcarriersmodulationschemeswhichcanbeusedbytheePMPSystem:QPSK16QAM64QAMEachmodulationsupportsmultiplecodingrates.Forexample64QAMsupportscodingrates5/6,3/4and2/3.TheOFDMchannelbandwidthcanbeconfiguredwithoneoffourpossiblevalues:5MHz,10MHz,20MHzand40MHz.Widerchannelbandwidthconfigurationsallowforgreaterconnectioncapacityasthesignaloccupiesalargerportionofthespectrum.NarrowerchannelbandwidthconfigurationsincreasereceptionsensitivityandallowformoreopportunitiestooperateinspectrumconstrainedRFenvironments.ThechannelbandwidthmustbeconfiguredwiththesamevaluesinboththeAPandSMmodulesoftheePMPSystem.MIMO(MultipleInputMultipleOutput)radiotransmissionoffersthecapabilityofincreasingthecapacityofaradioconnectionbytransmittingandreceivingparallelsignalsonseparateTx/Rxchains.WhenthebenefitsoftheMIMOtechniquesarecombinedwithOFDMsignalingandhighsystemgain,operatorscanachieveahighlyrobustradioconnectioninconditionsofnonlineofsight(NLOS)propagation.TheePMPSystemuses2x2MIMOwithtworadioreceiversandtwotransmittersinboththeAPmoduleandtheSMmodule,transmittinginbothdirectionstworadiosignalsinthesamefrequency.Onesignalisverticallypolarizedandtheothersignalishorizontallypolarized,withdualstreammode:thesystemtransmitstwodistinctparalleldataflowsonebywayoftheverticallypolarizedradiosignalandtheotherbywayofthehorizontallypolarizedradiosignal.Inthisway,theePMPSystemdoublesitstransmissioncapacity.TheePMPsystemalsooffersasinglestreammode,inwhichbothtransmitchainstransmitthesamedata,whichisthencombinedatthereceiver.Thismodeimprovesthesensitivityofthesystemandincreasestherange.CambiumNetworksofferstwosectorantennastobeusedwiththeAPmoduleoftheePMPSystemtocreatetheRFcoverageofserviceareasinmultisectorsites.TheantennasprovidedbyCambium

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NetworksarespecificallydesignedtooptimizetheperformanceintermsofradiocoverageoftheePMPSystem:90sectorantennaforsiteswithupto4APmodules120sectorantennaforsiteswithupto3APmodules

Typesofconnections TheePMPSeriescanprovideLOS(LineOfSight)connectivity,nLOS(nearLineOfSight)connectivityandNLOS(NonLineOfSight)connectivity.Adefinitionofthesedifferentpropagationconditionsarethefollowing.LOS:theopticallinebetweentheAPandtheSMandthefirstFresnelzoneareclear.nLOS:theopticallinebetweentheAPandtheSMisclear,butaportionofthefirstFresnelzoneisblocked.NLOS:theopticallinebetweentheAPandtheSMandaportionorevenmuchofthefirstFresnelzoneareblocked,butsubsequentFresnelzonesareopen.

Linkbudgetcalculation Thelinkbudgetisthelistofallthegainsandlossesthatcontributetothepropagationoftheradiofrequencysignalthattravelsfromthetransmittertothereceiver.Theparametersthataretakenintoaccountforthecalculationofthelinkbudgetaredescribedbelow:Transmitteroutputpower:themedianpowerlevelofthetransmitterinthetransmissionchannelexpressedindBm(relativetomilliwatt).ThislevelisconfiguredfortheAPtransmitterbytheregulatorylimitsandisautomaticallyadjustedintheSMtransmitterthroughATPC(AutomaticTransmitPowerControl)functionalityinordertogetthemaximumvalue.Cableloss:thelossexpressedindBassociatedwiththecoaxialcableusedtoconnectthetransmitterwiththeantenna.Thelosstypicallydependsonthelengthofthecableanditsquality.

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Transmitterantennagain:assumingthatthetransmitterantennamainaxisisorientedinthedirectionofthereceiverantenna,themaximumgaingivenindBdeclaredbythemanufacturerisused.EIRP(EffectiveIsotropicRadiatedPower):isthesumofthetransmitteroutputpowerandtransmitterantennagainminusthecableloss,expressedindBm.Receiverantennagain:assumingthatthereceiverantennamainaxisisorientedinthedirectionofthetransmitterantenna,themaximumgaingivenindBdeclaredbythemanufacturerisused.Fademargin:theamountofpowergivenindBthatrepresentsthedifferencebetweenthemediansignallevelatthereceiverinputandthereceiversensitivity.Whenthelinkfadesexceedingthefademarginanoutageoccurs.Fademarginmustbeselectedbytheuseraccordingtothelinkavailabilitytargetthatmustbemet.Receiversensitivity:theminimummediansignallevelneededattheinputofthereceivertoachieveareceiveroutputqualityspecifictoaparticularmodulationscheme.Higherordermodulationschemesrequirehigherqualityreceiveroutputandhigherreceivedpowersignallevels.SystemGain:thedifference,expressedindB,betweentheEIRPandthelowestordermodulationreceiversensitivityandcableloss.ItconventionallyreferstotheminimumoftheuplinkanddownlinksystemgainsandrepresentsthemaximumFSPLachievablewithaparticularsystemconfiguration.FSPL(FreeSpacePathLoss):itrepresentstheradiofrequencypropagationcalculationusedinthetoolandistheattenuationbetweenthetransmitterantennaandthereceiverantennainfreespacegivenbytheFriisformula:

FSPL[dB]=32.44+20logf+20logdWherefisexpressedinMHzanddisexpressedinkilometers FSPL[dB]=36.6+20logf+20logdWherefisexpressedinMHzanddisexpressedinmiles

ThislinkbudgetcalculationcanbeconsideredavalidapproximationforLOSpropagationinflatfadingconditionswheretheoperatingbandwidthislessthanthecoherencebandwidthoftheradiochannelthatiswhenthesamedegreeoffadingaffectsallfrequenciesofthesignalbandwidth.IncasetheradiochannelisexperiencingfrequencyselectivefadingeffecttheLOSrangeresultsmaynotbevalid.

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LINKBUDGETTheuserinterfaceoftheLINKBUDGETtabisdividedintothreemainparts:SystemConfiguration,LinkBudgetandCoverageandCapacity.

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SYSTEM CONFIGURATION IntheSYSTEMCONFIGURATIONmenuthefieldsingreenrepresenttheparametersthatcanbesetbytheuseraccordingtothesystemconfigurationthatisappliedtotheePMPsystem.Thefieldsinwhiteareoutputvaluestobeusedasreferencesfortheinputparameterssetting.

Thereferencevaluesarethefollowing:Lowerfrequency:loweredgeoftheselectedfrequencybandUpperfrequency:upperedgeoftheselectedfrequencybandAPEIRPlimit:limitofthecombinedpoweremittedbytheAPantennasystem,asdefinedbytheregulatoryselected.Avalueof""indicatesthatnolimitisdefinedbytheregulatoryregionselected.MaxAPTxPower(maxMCS):upperlimitofthecombinedpowerthatcanbeappliedtotheAPantennasystem,inordertobecomplianttotheEIRPlimit.IftheselectedregulatorydoesnotrestricttheEIRP,thisistheupperlimitofthecombinedpowerthatcanbeappliedtotheAPantennasystematthehighestMCSlevel.SMEIRPlimit:limitofthecombinedpoweremittedbytheSMantennasystem,asdefinedbytheregulatoryselected.Avalueof""indicatesthatnolimitisdefinedbytheregulatoryregionselected.MaxSMTxPower(maxMCS):upperlimitofthecombinedpowerthatcanbeappliedtotheSMantennasystem,inordertobecomplianttotheEIRPlimit..IftheselectedregulatorydoesnotrestricttheEIRP,thisistheupperlimitofthecombinedpowerthatcanbeappliedtotheAPantennasystematthehighestMCSlevel.Maxrangelimit:minimumofmaximumrangecalculatedusingtheconfigurationparametersinputinthetoolandlimitoftheePMPproduct.Theunitoftherangeismilesorkilometersasexplainedbelow.Thevaluesthatcanbeconfiguredarethefollowing:Region:selectionoftheregulatorysetofrulestobeappliedaccordingtothecountryofoperation.

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Frequencyband:selectionofthe5GHzspectrumband(5.1GHz,5.2GHz,5.4GHzor5.7/5.8GHz)or2.4GHzspectrumband.Notallfrequencybandsareavailableinallregions.

FadeMargin:settingofthemarginonsignalfadingthattheuserwantstointroduceinordertoobtainthedesiredlinkavailability.Thefollowingtablesummarizestheestimatedfademarginforacertainlinkavailability.

Linkavailability FademargininLOS

FadeMargininnLOS

FadeMargininNLOS(suburban)

FadeMargininNLOS(urban)

90% 0dB 2.5dB 4dB 7.5dB99% 2dB 4.5dB 9dB 17dB99.9% 5dB 6.5dB 16dB 27dB99.99% 8dB 9dB 24dB 37dB

ChannelBandwidth:selectionofthewidthoftheoperatingchannel(5MHz,10MH,20MHzor40MHz).

APtype:selectionofthetypeofradiousedattheAPsite(connectorizedorintegrated).TypicallytheAPisaconnectorizedradiowithasectorantenna,andtheSMisanintegratedradio.However,theCapacityPlannergivestheoptionofselectinganytypeofradiooneitherside,incaseaPTPlinkisestablished.Forexample,aPTPlinkcanbeconfiguredwithtwointegratedradiosorwithtwoconnectorizedradioswithsmallbeamwidthantennas.

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APantennasystem:selectionoftheantennausedfortheAPmodule(90sectorantenna,120sectorantennaor3rdparty).The90andthe120sectorantennaeareprovidedbyCambium.Selecting3rdpartyinthisfieldallowstheusertoinputtheparametersofanyotherantennathatisbeingused.ThisfieldisvalidonlyiftheAPtypeisselectedasConnectorized.

AP3rdpartyantennagain:inputfieldofAPantennagainiftheAPantennasystemisselectedas3rdpartyAP3rdpartyantennacableloss:inputfieldofAPantennacablelossiftheAPantennasystemisselectedas3rdparty

3rdpartyconnectorizedSMsinsector?:AnswerYesifanyoftheSMsdeployedinthesectorthatisbeingconfiguredisconnectorized.

RegionFrequency band 5.7/5.8 [GHz]

Fade Margin 0 [dB]Channel Bandwidth 20 [MHz]

AP typeAP antenna system

AP 3rd party antenna gain 25 [dBi]AP 3rd party antenna cable loss 1 [dB]

3rd party

Others

Connectorized

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3rdpartyconn.SMantennagain:inputfieldofSMantennagainifanyconnectorizedSMsaredeployedinthesector.Thisfieldisvalidonlyifthe3rdpartyconnectorizedSMsinsector?isselectedasYes.3rdpartyconn.SMantennacableloss:inputfieldofSMantennacablelossifanyconnectorizedSMsaredeployedinthesector.Thisfieldisvalidonlyifthe3rdpartyconnectorizedSMsinsector?isselectedasYes.

Environment:typeofpropagationenvironment.Theoptionsforthisfieldare:LOS,nearLOS,NLOS(suburban)orNLOS(urban).ThefollowingtablesummarizestheexcesspathlossusedintherangecalculationformulaforeachselectionoftheEnvironmentparameter.

Environment ExcessPathLossLOS 0dBnLOS 5dB

NLOS(suburban) 15dBNLOS(urban) 25dB





3rd party connectorized SMs in sector?3rd party conn. SM antenna gain 23 [dBi]

3rd party conn. SM antenna cable loss 1 [dB]

Others

Connectorized

Yes

Cambium 90 sector

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Rangeunit:unitforrangesusedthroughoutthetool.Choicesaremilesorkilometers.

Maxrange:distancebetweentheAPandthelocationofthefartherSMtheuserwantstoservewiththeAP.ThepotentialmaximumcellsizeiscalculatedusingotherlinkbudgetparametersselectedinthegreencellsandisshownastheMaxrangelimit.IftheMaximumrangeinputislargerthantheMaxrangelimitanerrormessageappears.TheMaxrangelimitisareferencevalueandcannotbechanged.TheunitfortheMaxrangeandtheMaxrangelimitiseithermilesorkilometers,dependingontheRangeunitselection.Withasmallercellsize,alargerpercentageofuserscanusehigherordermodulation,andthesectorcapacityishigher.Ontheotherhand,withsmallercellsnetworkplanningbecomesveryimportant,inordertolimitinterferencebetweensectorsusingthesamefrequency.

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NumberofSMs/sector:NumberofSMsconnectedtooneAPinonesector.ThenumberofSMsaffectsthethroughputthatcanbeachievedinasector,andalsotheschedulinglatencywithintheAP.ThemaximumnumberofSMsthatcanbeconnectedinonesectoris120.Ifalargernumberisinputinthisfield,anerrormessageappears.IfonlyoneSMpersectorisselected,itisassumedthatthisisaPTPlink.

Dutycycle:Percentageofframetimededicatedtodownlink(APtoSM)transmission/percentageofframetimededicatedtouplink(SMtoAP).Theoptionsare75/25,50/50and30/70.IntheePMPsystem,theselecteddutycycledoesnotnecessarilytranslatetothesameratioofDL/ULthroughput.ThereasonisthattheULresourcesdedicatedtodatatransmissionvaryaccordingtothenumberofSMsinthesector,becauseeachSMisperiodicallypolled.

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MaxCombinedAPTxpower(minMCS):maximumpowertransmittedbybothtransmitchainsatthelowestMCSlevel.ThisfieldcanbeusedtolimittheTxpowertogobeyondacertainvaluewhenCountryisselectedasOthers,asexplainedintheDOWNLINKANDUPLINKBUDGETsection.IftheCountryisnotselectedasOthers,thenthisfieldisnotused.Interferencemeasured?:SelectYesifthesystemexperiencesinterference.OtherwiseselectNo.

SMantennaformeasuringinterference:AntennatypeusedattheSMtomeasuretheDLinterferencelevel.ThisfieldisvalidonlyifInterferencemeasured?fieldisselectedasYes.Theoptionsinthedropdownmenudependonthefrequencybandselected.

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Downlinkinterferencelevel:Value(indBm)oftheinterferencebeingmeasuredinthedownlinkchannelcurrentlyused(cochannel).ThisfieldisvalidonlyiftheInterferencemeasured?fieldisselectedasYes.Uplinkinterferencelevel:Value(indBm)oftheinterferencebeingmeasuredintheuplinkchannelcurrentlyused(cochannel).ThisfieldisvalidonlyiftheInterferencemeasured?fieldisselectedasYes.

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%ofSMswithunevenpaths(singlestreamMCS):SomeoftheSMsdeployedinthesectormayexperiencealargedifferencebetweenthereceivedsignalstrengthofthetwopaths.Forexample,aNLOSconditioncancausethisscenario.Inthiscase,theePMPrateadaptalgorithmwouldselectoneofthesinglestreamMCSoptions(MCS1toMCS7).ThisfieldisanestimateofthepercentageofSMsinthisdeploymentscenario.PTPMode:IftheNumberofSMs/sectorissetto1,thesystemisaPTPlink.InthiscasethePTPModefieldindicatesifthePTPlinkusesasinglestreamMCSoradualstreamMCS.






3rd party conn. SM antenna cable loss 1 [dB]Environment

Range unitMax range 10 [mi]

Number of SMs/sectorDuty cycle

Max Combined AP Tx power (min MCS) 30 [dBm]Interference measured?

SM antenna for measuring interferenceDownlink interference level -98 [dBm]

Uplink interference level -98 [dBm]

miles

Others

LOS

3050/50

Connectorized

Yes

YesINTEGRATED

Cambium 90 sector

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BoththeLINKBUDGETsectionandtheCOVERAGEANDCAPACITYsectiondisplayresultsforoneoftheavailableSMantennatypes.TheSMantennatypetheuserwantstodisplayisselectedintheSMantennafordisplayingdatafield.Theoptionsavailableinthedropdownmenudependonthefrequencybandselected.

LINK BUDGET IntheLINKBUDGETpartoftheuserinterfacethesettingsofalltheparametersincludedinthelinkbudgetcalculationarelistedintwocolumns:oneforthedownlinkdirection(fromAPtoSM)andonefortheuplinkdirection(fromSMtoAP)fortheSMwithantennatypeselectedintheSMantennafordisplayingdatafield.ThesensitivityvaluesarelistedforalltheMCSlevelssupported(MCS15toMCS9,andMCS7toMCS1).ThemodulationandcodingratecorrespondingtoeachMCSlevelisalsoshowninthissection.

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TheAPTxPowerperchainandtheSMTxpowerperchainareshownforthemostrobustmodulationandcodinglevel(MCS15).InFCCandETSIregions,thisvalueisalsotheTxpowerperchainatanyothermodulationlevel,becausetheTxpowerislimitedbyregulatoryrequirements.WhentheCountryintheSYSTEMCONFIGURATIONsectionisselectedasOthers,theTxpowerlevelisincreasedatlowermodulationandcodinglevels.ThereasonisthatatlowermodulationlevelsthesystemcantolerateahigherlevelofEVM(errorvectormagnitude)ontheconstellation,becausetheconstellationpointsarefartherapart.Forexample,inthe5.7/5.8GHzbandthetransmitpowerisequalto20dBmperchainatMCS15,butitgoesupto22dBmperchainatMCS14,allthewayto30dBmperchainatMCS1.IftheuserdoesnotwanttheTxpowertoincrease,itcanlimititusingthefieldMaxCombinedAPTxpowerintheSYSTEMCONFIGURATIONsection.Ifavaluelowerthan30dBmisinputinthisfield,theTxpowerwillbelimitedbythisvalueatanymodulationmode.WhenthesystemexperiencesinterferenceandYesisselectedintheInterferencemeasured?fieldintheSYSTEMCONFIGURATIONsection,thenoisefloorofthesystemincreasesaccordingtotheinterferencelevels,andtheDL/ULreceivesensitivitiesforallMCSlevelschange.WithhigherinterferencelevelsastrongersignalisneededatthereceivertoachievethesameMCSlevel.TheeffectofcochannelinterferenceisareductionofthepotentialrangeforeachMCSlevelasshownintheCOVERAGEANDCAPACITYsection.ThisresultsinanumberofSMsnotbeingabletoconnectifthemaximumrangewassetasequaltothemaximumpotentialrange,orintheaveragecapacitydecreasingbecausefewerSMscanusehigherMCSlevels.TheSYSTEMGAINisreportedforeverymodulationschemeinboththedownlinkandtheuplinkdirections.ThetableincludesanotehighlightingtheeventualamountofimbalanceoftheSystemGainsthatcanbeusefultoreconfigurethesystem.Notethatthecalculationsareperformedwithsensitivityvalueswithonedecimalpointprecision,butboththesensitivityvaluesandthegainvaluesareshownasintegernumbers.COVERAGE AND CAPACITY IntheCOVERAGEANDCAPACITYsectionoftheuserinterfacetheresultsofthelinkbudgetcalculationareshownfortheSMwithantennatypeselectedintheSMantennafordisplayingdatafield.

SM antenna for displaying data

AP Tx Power per chain (MCS15) 20 [dBm] 0.100 [Watts] 20 [dBm] 0.100 [Watts]

AP Cable Loss 1 [dB] 0.001 [Watts] SM Cable Loss 0 [dB] 0.001 [Watts]AP Antenna Gain 15.0 [dBi] 13.0 [dBi]

Combined AP EIRP 37 [dBm] 5.012 [Watts] 36 [dBm] 4.0 [Watts]-69 [dBm] 64QAM 5/6 MCS15 -69 [dBm] 64QAM 5/6 MCS15-70 [dBm] 64QAM 3/4 MCS14 -70 [dBm] 64QAM 3/4 MCS14-72 [dBm] 64QAM 2/3 MCS13 -72 [dBm] 64QAM 2/3 MCS13-77 [dBm] 16QAM 3/4 MCS12 -77 [dBm] 16QAM 3/4 MCS12-80 [dBm] 16QAM 1/2 MCS11 -80 [dBm] 16QAM 1/2 MCS11-84 [dBm] QPSK 3/4 MCS10 -84 [dBm] QPSK 3/4 MCS10-86 [dBm] QPSK 1/2 MCS9 -86 [dBm] QPSK 1/2 MCS9-69 [dBm] 64QAM 5/6 SS MCS7 -69 [dBm] 64QAM 5/6 SS MCS7-70 [dBm] 64QAM 3/4 SS MCS6 -70 [dBm] 64QAM 3/4 SS MCS6-72 [dBm] 64QAM 2/3 SS MCS5 -72 [dBm] 64QAM 2/3 SS MCS5-77 [dBm] 16QAM 3/4 SS MCS4 -77 [dBm] 16QAM 3/4 SS MCS4-80 [dBm] 16QAM 1/2 SS MCS3 -80 [dBm] 16QAM 1/2 SS MCS3-84 [dBm] QPSK 3/4 SS MCS2 -84 [dBm] QPSK 3/4 SS MCS2-86 [dBm] QPSK 1/2 SS MCS1 -86 [dBm] QPSK 1/2 SS MCS1

SM Cable Loss 0 [dB] 0.001 [Watts] 1 [dB] 0.001 [Watts]SM Antenna Gain 13.0 [dBi] 15.0 [dBi]

Total DL Gain (MCS15) = 116 [dB] 116 [dB]Total DL Gain (MCS14) = 119 [dB] 119 [dB]Total DL Gain (MCS13) = 123 [dB] 123 [dB]Total DL Gain (MCS12) = 131 [dB] 131 [dB]Total DL Gain (MCS11) = 134 [dB] 134 [dB]Total DL Gain (MCS10) = 138 [dB] 138 [dB]

Total DL Gain (MCS9) = 140 [dB] 140 [dB]Total DL Gain (MCS7) = 116 [dB] 116 [dB]Total DL Gain (MCS6) = 119 [dB] 119 [dB]Total DL Gain (MCS5) = 123 [dB] 123 [dB]Total DL Gain (MCS4) = 131 [dB] 131 [dB]Total DL Gain (MCS3) = 134 [dB] 134 [dB]Total DL Gain (MCS2) = 138 [dB] 138 [dB]Total DL Gain (MCS1) = 140 [dB] 140 [dB]

The link is balanced

DOWNLINK BUDGET (AP to SM)

Connectorized

SM Tx Power per chain (MCS15)

SM Antenna Gain

INTEGRATED

Yes

UPLINK BUDGET (SM to AP)

Combined SM EIRP

AP Cable LossAP Antenna GainYes Connectorized

Total UL Gain (MCS15) =Total UL Gain (MCS14) =Total UL Gain (MCS13) =Total UL Gain (MCS12) =Total UL Gain (MCS11) =Total UL Gain (MCS10) =

Total UL Gain (MCS9) =Total UL Gain (MCS7) =Total UL Gain (MCS6) =Total UL Gain (MCS5) =Total UL Gain (MCS4) =Total UL Gain (MCS3) =

SM Rx Sensitivity (Conservative assumption for single stream MCS: large difference between RSSI of two

branches)

AP Rx Sensitivity (Conservative assumption

for single stream MCS: large difference between

RSSI of two branches)

LINK BUDGET FOR INTEGRATED ANTENNA

SYSTEM GAIN

Total UL Gain (MCS1) =Total UL Gain (MCS2) =

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Thissectionshowstheexpectedrange,theexpectedmaximumDL,ULandtotalthroughput,thesectorcapacity,thelatency,andaplotsummarizingcoverageandcapacityresults.

TheDL/ULPotentialRangerepresent,foreachmodulationscheme,themaximumdistanceatwhichtheradiolinkcanoperatewiththeselectedconfigurationandfademargin.ValuesofrangeinredindicatethatthepotentialrangeislargerthanthemaximumrangesetintheMaxrangefieldintheSYSTEMCONFIGURATIONsection.ForsinglestreamMCS,theconservativeassumptionthatoneofthetwopathsiscompletelycorruptedisassumed.OnexceptionisforMCS1intheouterringofthecoveragearea.Inthisarea,MCS1willbeselectedbytherateadaptalgorithmevenifthetwobrancheshavecomparableSNR,becausethecombininggainallowsalongerrangecommunication.Inthissection,theMCS1rowcorrespondstoMCS1whenonepathisobstructed,whileMCS1withdiversitycorrespondstoMCS1withcombininggainatthereceiver.TheDL/UL/TotalMaxThroughputistheDownlink/Uplink/TotalcapacityofthesectorassumingalltheregisteredSMsareoperatingatthatmodulation.TheDL/UL/TotalCapacityistheDownlink/Uplink/Totalcapacityofthesector,takingintoaccountthepercentageofusersusingeachmodulation,undertheassumptionthattheusersareevenlydistributedinthecoveredareaandthattheyallgeneratethesameamountoftraffic.ThiscalculationalsoincludesthepercentageofSMsestimatedtosupportasinglestreamMCS.ThecapacityofthesectoriscalculatedasaproportionofthepeakcapacitytakingintoaccounttheAPantennapatternandthefactthattheusersareevenlydistributedinthecoveredarea.ThecoveredareaislimitedbytheMaxrangefieldsetintheSYSTEMCONFIGURATIONsection.Appendix Ashowsanexampleofcapacitycalculations.TheDL/UL/Totalschedulinglatency(inms)showsthetimeneededattheAPtoschedulealltheSMsconnectedinthesector,anditdependsonthenumberofSMssetintheSYSTEMCONFIGURATIONsection.Thisislessthanthetotallatencythesystemexperiences,whichdependsonadditionalfactors.

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TheplotintheCOVERAGEANDCAPACITYsectionshowstherangeofcommunicationthatcanbeachievedwitheachmodulationandcodinglevelinthedownlink,uptothemaximumrangesetintheMaxrangefieldintheSYSTEMCONFIGURATIONsection.TheplotintheCOVERAGEANDCAPACITYsectionshowstherangeofcommunicationthatcanbeachievedwitheachMCSlevel,uptothemaximumrangesetintheMaxrangefieldintheSYSTEMCONFIGURATIONsection.IfsomeMCSlevelscoveranareaoutsidetheMaxrangefield,thoseMCSlevelsarenotused.ThelegendoftheplotindicateswhichMCSlevelsarenotused,togetherwiththepeakDL/UL/TotalthroughputforeachusedMCSlevel.ThisplotassumesthatthetworeceivedpathshavecomparableSNR.ThereforetherateadaptwillselectonlydualstreamMCSlevels(MCS9toMCS15)pluspossiblyMCS1forextendingtherangebeyondthecoverageachievablewithMCS9.

NETWORK PLANNING Thenetworkplanningtabcalculatesthetotalnumberofenterpriseand/orresidentialcustomersthatcanbesupportedinasector,givenaselecteddistributionofplans.

IntheNETWORKCONFIGURATIONsectionthefieldsinwhitecannotbechanged,andtheyareasummaryoftheselectionsandtheresultsintheLINKBUDGETsection.ThefieldsingreenintheNETWORKCONFIGURATIONsectionarepopulatedbytheuser.Downlink%:percentageofframetimeallocatedtothedownlink(APtoSM).ThisfieldcorrespondstotheDutycyclefieldintheSYSTEMCONFIGURATIONsectionoftheLINKBUDGETtab.MaxCellSize:distance(inmilesorkilometers)betweentheAPandthelocationofthefartherSMtheuserwantstoservewiththeAP.ThisfieldcorrespondstotheMaxrangefieldintheSYSTEMCONFIGURATIONsectionoftheLINKBUDGETtab.%IntegratedSMs,%SMswithePMPFORCE,%SMswithReflectorand%3rdpartyconnSMs:percentageofSMsusinganintegratedantenna,ePMPFORCE100,Reflector,ora3rdpartyconnectorizedantennarespectively.The%IntegratedSMsfieldiscalculatedfromtheothers,togiveasumof100%.EachpercentagecannotexceedthelimitshownintheMax%fieldforeachtype,whichiscalculatedusingtheparametersselectedintheLINKBUDGETtab.

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Ent.Oversubscriptionrate:oversubscriptionrateselectedfortheenterprisecustomersRes.Oversubscriptionrate:oversubscriptionrateselectedfortheresidentialcustomers%ofSMswithunevenpath:EstimatedpercentageofSMSthatcommunicatewithsinglestreamMCS.Thisfieldcorrespondstothe%ofSMswithunevenpaths(singlestreamMCS)fieldintheSYSTEMCONFIGURATIONsectionoftheLINKBUDGETtab.AvgDL/ULCapacity:downlink/uplinkcapacityofthesector,takingintoaccountthepercentageofusersusingeachmodulation,thepercentageofuserscommunicatingwithsinglestreamMCS,andthepercentageofSMsusingeachantennasystem.TheassumptionisthatSMswithantennatypeswithhighergainaredeployedfarthestfromtheAP,whileSMswithantennatypeswithlowergainaredeployedcloseststotheAP.Inthe5GHzbandtherearefouroptions:integrated,ePMPForce,reflectorand3rdpartyconnectorizedSMs.ConsideringfourconcentricringscenteredattheAP(whereeachringcanhaveareaequaltozeroifthecorrespondingpercentageiszero),theinnermostcircleincludesthelocationsofallSMsusinganintegratedantenna.TheouterthreeringsincludethelocationsofallSMsusingtheEPMPForce,thereflectorora3rdpartyconnectorizedantenna,withorderdependingonthegainofthe3rdpartyconnectorizedantenna.Ifforexamplethe3rdpartyconnectorizedantennagainishigherthanthegainoftheePMPForce,thentheorderoftherings(startingfromtheAP)is:integrated,reflector,ePMPForceand3rdpartyconnectorized.Inthe2.4GHzbandtherearethreeoptions:integrated,reflectorand3rdpartyconnectorizedSMs.ConsideringthreeconcentricringscenteredattheAP(whereeachringcanhaveareaequaltozeroifthecorrespondingpercentageiszero),theinnermostcircleincludesthelocationsofallSMsusinganintegratedantenna.TheoutertworingsincludethelocationsofallSMsusingreflectorantennaora3rdpartyconnectorizedantenna,withorderdependingonthegainofthe3rdpartyconnectorizedantenna.Forexample,ifthe3rdpartyconnectorizedantennagainishigherthanintegratedantennagainbutlowerthanthereflectorgain,theorderoftherings(startingfromtheAP)is:integrated,3rdpartyconnectorized,andreflector.ThedistributionoftheSMantennatypesinthesectorisshownbytheplot.

AvgTotCapacity:sumofAvgDLCapacityandAvgULCapacity.Enterprise and Residential Plans Therearethreetypesofplans.PlanAisanenterpriseplan;planBisaresidentialplanandplanCisablendedplan,withamixofenterpriseandresidentialcustomers.BoththeEnterpriseandtheResidentialplanscompriseofamixofplanswithdifferentDownlink/Uplinkthroughputs.Thecellsingreenarepopulatedbytheuser,indicatingtheDownlink/Uplinkthroughputsforeachplanandthedistribution(inpercentage)foreachplan.

SMantennatypedistribution ePMPForce100Connectorized

Reflector

Integrated

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ForplansAandB:AverageDLThroughput/user:averagedownlinkthroughputneededbytheenterpriseorresidentialcustomerswiththemixofplansselectedbytheuser.ThisistheweightedaverageofthefourDLplansusingtheAverageDistributionvaluesasweights.AverageULThroughput/user:averageuplinkthroughputneededbytheenterpriseorresidentialcustomerswiththemixofplansselectedbytheuser.ThisistheweightedaverageofthefourULplansusingtheAverageDistributionvaluesasweights.DLUsers/sector:numberofusersthatcanbesupportedinthesectorsatisfyingthedownlinkrequirements,takingintoaccounttheoversubscriptionrate.ThisistheAvgDLcapacitydividedbytheaverageDLThroughput/userandmultipliedbytheoversubcriptionrate.ULUsers/sector:numberofusersthatcanbesupportedinthesectorsatisfyingtheuplinkrequirements,takingintoaccounttheoversubscriptionrate.ThisistheAvgULcapacitydividedbytheaverageULThroughput/userandmultipliedbytheoversubcriptionrate.TotalUsers/sector:lowernumberbetweentheDLUsers/sectorandtheULUsers/sector.IfparametersareselectedsothattheDLUsers/sectorandtheULUsers/sectorareclose,thenthetotalcapacityofthesectorisfullyutilized.PlanCisamixofplansAandBwithacertainpercentageselectedbytheuser.Inthiscase,theAverageDLThroughput/useristheweightedaverageoftheAverageDLThroughput/userfortheenterpriseandresidentialcustomers,andtheAverageULThroughput/useristheweightedaverageoftheAverageULThroughput/userfortheenterpriseandresidentialcustomers.TheDLUsers/sectorandtheULUsers/sectorareagaincalculatedastheAvgDLcapacityandtheAvgULcapacitydividedbytheAverageDLThroughput/userandtheAverageULThroughput/userrespectively,multipliedbythecorrespondingoversubscriptionrate.DLUsers/sector=FLOOR(AvgDLCapacity/(Enterprise%EnterpriseAverageDLThroughput/user/Enterpriseoversubscriptionrate+Residential%ResidentialAverageDLThroughput/user/Residentialoversubscriptionrate)ULUsers/sector=FLOOR(AvgULCapacity/(Enterprise%EnterpriseAverageULThroughput/user/Enterpriseoversubscriptionrate+Residential%ResidentialAverageULThroughput/user/Residentialoversubscriptionrate)TheTotalUsers/sectorisagainthelowernumberbetweentheDLUsers/sectorandtheULUsers/sector.IftheTotalUsers/sectorinanyofthethreesectionsexceedstheNumberofSMspersectorparameterconfiguredintheLINKBUDGETsection,theTotalUsers/sectorcellsbecomeredtoindicatetheerror.Inthiscase,theNumberofSMspersectorparameterconfiguredintheLINKBUDGETsectionhastobeincreased.IftheNumberofSMspersectorparameterismuchhigherthantheTotalUsers/sectorcalculatedintheNETWORKPLANNINGsection,theusermaywanttoreducetheNumberofSMspersectorparameterbecausethemaximumthroughputiscalculatedusinganunnecessarilylargenumberofSMs.Appendix BshowsanexampleofcalculationsofnumberofEnterpriseandResidentialusers.

21

SECTOR THROUGHPUT TheSECTORTHROUGHPUTCALCULATORallowstheusertoeitherinputtheexactlocationofalltheSMsortoinputthepercentageofSMsthatcommunicateateachMCSlevel.

IntheSUBSCRIBERSLOCATIONSsectiontheuserinputsthevaluesinthegreencells:thedistancebetweentheAPandeachSMthetypeofSMantennasystemthetransmissionmode(singlestreamordualstream)AnynumberofSMscanbeinput,uptothemaximumsupportedbythesector,whichis120SMs.AblankcellindicatesthatthecorrespondingSMisnotused.DLMCS:modulationandcodinglevelthatcanbesupportedinthedownlinkdirectionbytheSMatthedistanceinputbytheuserULMCS:modulationandcodinglevelthatcanbesupportedintheuplinkdirectionbytheSMatthedistanceinputbytheuserDLThroughput:peakdownlinkthroughputsupportedbytheSMattheMCSlevelindicatedintheDLMCSfieldULThroughput:peakuplinkthroughputsupportedbytheSMattheMCSlevelindicatedintheULMCSfieldTotalThroughput:sumofDLThroughputandULThroughput.SMsperDLmodulation:numberandpercentageofSMsthatcancommunicateinthedownlinkdirectionineachoftheMCSlevels,basedonthedistancesinputforeachSMandtheSMantennaselection.SMsperULmodulation:numberandpercentageofSMsthatcancommunicateintheuplinkdirectionineachoftheMCSlevels,basedonthedistancesinputforeachSMandtheSMantennaselection.

SM number SM type Mode DL MCS UL MCS

DL Throughput

[Mbps]

UL Throughput

[Mbps]

Total Throughput

[Mbps]

DL/UL/Total Throughput per

modulation [Mbps]


SM [Mbps]SM 1 0.5 [mi] INTEGRATED Dual stream MCS15 MCS15 70.1 19.5 89.6 MCS15 7 23.3% MCS15 9 30.0% 10.45/3.91/14.36 1.49/0.43/1.92SM 2 2.3 [mi] INTEGRATED Dual stream MCS14 MCS15 62.0 19.5 81.5 MCS14 5 16.7% MCS14 5 16.7% 7.47/2.17/9.64 1.49/0.43/1.92SM 3 7.9 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6 MCS13 8 26.7% MCS13 6 20.0% 11.95/2.61/14.55 1.49/0.43/1.92SM 4 0.5 [mi] INTEGRATED Dual stream MCS15 MCS15 70.1 19.5 89.6 MCS12 10 33.3% MCS12 10 33.3% 14.93/4.34/19.27 1.49/0.43/1.92SM 5 10.0 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6 MCS11 0 0.0% MCS11 0 0.0% 0/0/0 0/0/0SM 6 10.0 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6 MCS10 0 0.0% MCS10 0 0.0% 0/0/0 0/0/0SM 7 0.7 [mi] INTEGRATED Dual stream MCS15 MCS15 70.1 19.5 89.6 MCS9 0 0.0% MCS9 0 0.0% 0/0/0 0/0/0SM 8 2.3 [mi] INTEGRATED Dual stream MCS14 MCS15 62.0 19.5 81.5 MCS7 0 0.0% MCS7 0 0.0% 0/0/0 0/0/0SM 9 7.2 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6 MCS6 0 0.0% MCS6 0 0.0% 0/0/0 0/0/0SM 10 2.6 [mi] INTEGRATED Dual stream MCS14 MCS14 62.0 17.5 79.5 MCS5 0 0.0% MCS5 0 0.0% 0/0/0 0/0/0SM 11 4.6 [mi] INTEGRATED Dual stream MCS13 MCS13 56.6 15.5 72.1 MCS4 0 0.0% MCS4 0 0.0% 0/0/0 0/0/0SM 12 4.8 [mi] INTEGRATED Dual stream MCS13 MCS13 56.6 15.5 72.1 MCS3 0 0.0% MCS3 0 0.0% 0/0/0 0/0/0SM 13 8.3 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6 MCS2 0 0.0% MCS2 0 0.0% 0/0/0 0/0/0SM 14 0.4 [mi] INTEGRATED Dual stream MCS15 MCS15 70.1 19.5 89.6 MCS1 0 0.0% MCS1 0 0.0% 0/0/0 0/0/0SM 15 1.5 [mi] INTEGRATED Dual stream MCS15 MCS15 70.1 19.5 89.6 Total 30 Total 30SM 16 5.0 [mi] INTEGRATED Dual stream MCS13 MCS13 56.6 15.5 72.1SM 17 3.2 [mi] INTEGRATED Dual stream MCS14 MCS14 62.0 17.5 79.5 DL Average Capacity [Mbps] 44.80SM 18 1.0 [mi] INTEGRATED Dual stream MCS15 MCS15 70.1 19.5 89.6 UL Average Capacity [Mbps] 13.03SM 19 6.1 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6 Total Average Capacity [Mbps 57.82SM 20 1.6 [mi] INTEGRATED Dual stream MCS15 MCS15 70.1 19.5 89.6SM 21 5.7 [mi] INTEGRATED Dual stream MCS13 MCS13 56.6 15.5 72.1SM 22 4.2 [mi] INTEGRATED Dual stream MCS13 MCS13 56.6 15.5 72.1SM 23 7.2 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6SM 24 6.5 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6SM 25 5.0 [mi] INTEGRATED Dual stream MCS13 MCS13 56.6 15.5 72.1SM 26 3.5 [mi] INTEGRATED Dual stream MCS14 MCS14 62.0 17.5 79.5SM 27 7.6 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6 MCS15 8 26.7% MCS15 8 26.7% 11.95/3.47/15.42 1.49/0.43/1.93SM 28 3.8 [mi] INTEGRATED Dual stream MCS13 MCS14 56.6 17.5 74.1 MCS14 5 16.7% MCS14 5 16.7% 7.47/2.17/9.64 1.49/0.43/1.93SM 29 3.8 [mi] INTEGRATED Dual stream MCS13 MCS14 56.6 17.5 74.1 MCS13 5 16.7% MCS13 5 16.7% 7.47/2.17/9.64 1.49/0.43/1.93SM 30 10.0 [mi] INTEGRATED Dual stream MCS12 MCS12 40.4 12.1 52.6 MCS12 3 10.0% MCS12 3 10.0% 4.48/1.3/5.78 1.49/0.43/1.93SM 31 [mi] MCS11 2 6.7% MCS11 2 6.7% 2.99/0.87/3.85 1.49/0.43/1.93SM 32 [mi] MCS10 2 6.7% MCS10 2 6.7% 2.99/0.87/3.85 1.49/0.43/1.93SM 33 [mi] MCS9 0 0.0% MCS9 0 0.0% 0/0/0 0/0/0SM 34 [mi] MCS7 2 6.7% MCS7 2 6.7% 2.99/0.87/3.85 1.49/0.43/1.93SM 35 [mi] MCS6 1 3.3% MCS6 1 3.3% 1.49/0.43/1.93 1.49/0.43/1.93SM 36 [mi] MCS5 1 3.3% MCS5 1 3.3% 1.49/0.43/1.93 1.49/0.43/1.93SM 37 [mi] MCS4 0 0.0% MCS4 0 0.0% 0/0/0 0/0/0SM 38 [mi] MCS3 1 3.3% MCS3 1 3.3% 1.49/0.43/1.93 1.49/0.43/1.93SM 39 [mi] MCS2 0 0.0% MCS2 0 0.0% 0/0/0 0/0/0SM 40 [mi] MCS1 0 0.0% MCS1 0 0.0% 0/0/0 0/0/0SM 41 [mi] Total 30 Total 30SM 42 [mi] SM 43 [mi] 48.63SM 44 [mi] 13.84SM 45 [mi] 62.48SM 46 [mi]

INPUT SMs DIRECTLY

DL Average Capacity [Mbps]UL Average Capacity [Mbps]Total Average Capacity [Mbps

ePMP SECTOR THROUGHPUT CALCULATOR

SM distance SMs per DL modulation

Cambium Networks confidential, not commercially bindingSUBSCRIBERS' LOCATIONS

SMs per UL modulation



modulation [Mbps]


SM [Mbps]SMs per DL modulation

22

DLAveragecapacity:downlinkcapacityofthesector,takingintoaccountthepercentageofuserscommunicatingateachMCSlevel,undertheassumptionthattheusersaredistributedinthecoveredareaasindicatedintheSUBSCRIBERSLOCATIONsectionandthattheyallgeneratethesameamountoftraffic.CalculationsfordeterminingthisfieldaredoneinthesamewaydescribedinAppendix A.ULAveragecapacity:uplinkcapacityofthesector,takingintoaccountthepercentageofuserscommunicatingateachMCSlevel,undertheassumptionthattheusersaredistributedinthecoveredareaasindicatedintheSUBSCRIBERSLOCATIONsectionandthattheyallgeneratethesameamountoftraffic.CalculationsfordeterminingthisfieldaredoneinthesamewaydescribedinAppendix A.TotalAveragecapacity:sumofDLAveragecapacityandULAveragecapacity.DL/UL/TotalThroughputpermodulation:downlink/uplink/totalthroughputassignedtoeachmodulation.ThisistheproductoftheDL/UL/TotalAveragecapacityandthe%ofSMsperDL/ULmodulation.DL/UL/TotalThroughputperSM:downlink/uplink/totalthroughputeachSMineachmodulationgroupwillexperience,assumingallSMsareactiveatthesametime.NotethatforallMCSlevelsthatareinuseinthesectorthesevaluesarethesameforallSMs.ThereasonisthatitisassumedallSMsgeneratethesameamountoftraffic,andthereforetheyareallocatedthesamethroughput,regardlessoftheMCSleveltheycanuseforcommunication.INPUT SMs DIRECTLY IftheuserdoesnotwanttoinputthedistancesoftheSMsonebyone,andtheyhavethestatisticsoftheSMsdistancesavailable,theINPUTSMsDIRECTLYsectioncanbeused.

InthissectiontheusercandirectlyinputthenumberofSMsforeachMCSlevel(greencells)forthedownlinkanduplink.

MCS15 8 26.7% MCS15 8 26.7% 11.95/3.47/15.42 1.49/0.43/1.93MCS14 5 16.7% MCS14 5 16.7% 7.47/2.17/9.64 1.49/0.43/1.93MCS13 5 16.7% MCS13 5 16.7% 7.47/2.17/9.64 1.49/0.43/1.93MCS12 3 10.0% MCS12 3 10.0% 4.48/1.3/5.78 1.49/0.43/1.93MCS11 2 6.7% MCS11 2 6.7% 2.99/0.87/3.85 1.49/0.43/1.93MCS10 2 6.7% MCS10 2 6.7% 2.99/0.87/3.85 1.49/0.43/1.93MCS9 0 0.0% MCS9 0 0.0% 0/0/0 0/0/0MCS7 2 6.7% MCS7 2 6.7% 2.99/0.87/3.85 1.49/0.43/1.93MCS6 1 3.3% MCS6 1 3.3% 1.49/0.43/1.93 1.49/0.43/1.93MCS5 1 3.3% MCS5 1 3.3% 1.49/0.43/1.93 1.49/0.43/1.93MCS4 0 0.0% MCS4 0 0.0% 0/0/0 0/0/0MCS3 1 3.3% MCS3 1 3.3% 1.49/0.43/1.93 1.49/0.43/1.93MCS2 0 0.0% MCS2 0 0.0% 0/0/0 0/0/0MCS1 0 0.0% MCS1 0 0.0% 0/0/0 0/0/0Total 30 Total 30

48.6313.8462.48

INPUT SMs DIRECTLY

DL Average Capacity [Mbps]UL Average Capacity [Mbps]Total Average Capacity [Mbps



modulation [Mbps]


SM [Mbps]SMs per DL modulation

23

TheDL/UL/TotalAverageCapacitycalculations,theDL/UL/TotalThroughputpermodulationandtheDL/UL/TotalThroughputperSMcalculationsareperformedasexplainedabove,butusingthenumbersdirectlyinputbytheuserinsteadofusingtheSMsdistances.WhenusingtheSUBSCRIBERLOCATIONSsectionortheINPUTSMsDIRECTLYsection,verifythatthetotalnumberofSMsinthesectormatchestheNumberofSMs/sectorintheLINKBUDGETtab.ThenumberofSMs/sectoraffectstheavailablethroughput,soifthenumbersdonotmatchawrongthroughputnumberisusedinthecalculationsinthistab.

ReferencesAllthedetailedinformationsaboutCambiumNetworksePMPSeriescanbefoundintheofficialproductdocumentationavailablefordownloadfromCambiumNetworkspublicwebsite:http://www.cambiumnetworks.com/products/epmp

Questions/[email protected]

24

Appendix A Example of aggregate capacity calculation

Intheaggregatecapacitycalculationtwoassumptionsaremade: TheSMsaregeographicallyevenlydistributedinthecoveredarea AllSMsgeneratethesameamountoftraffic

Theinputvaluesusedinthisexamplearethefollowing:

Thesearethestepsforcalculatingtheaggregatecapacity:

ThePotentialDLRangeforeachmodulationislimitedbytheMaxrangefieldintheSYSTEMCONFIGURATIONsectionExamplewithMaxrangesetat10miles.

MCSlevel Potentialrange ActualrangeMCS15 2.58miles 2.58milesMCS14 3.64miles 3.64milesMCS13 5.77miles 5.77milesMCS12 14.49miles 10miles








Number of SMs/sectorDuty cycle

Max Combined AP Tx power (min MCS) 30 [dBm]Interference measured?

SM antenna for measuring interferenceDownlink interference level 0 [dBm]

Uplink interference level 0 [dBm]

SM antenna for displaying data

Others

LOS

3050/50

Connectorized

Yes

NoINTEGRATED

INTEGRATED

Cambium 90 sector

miles

25

MCS11 20.46miles 10milesMCS10 32.43miles 10milesMCS9 40.00miles 10milesMCS1 40.00miles 10miles

Calculatethearea(insquaremiles)coveredwitheachmodulation

ThemodulationandcodinglevelsupportedbyeachSMinLOSconditionsdependsonthedistancebetweentheAPandtheSM.SMsclosertotheAPcansupporthigherMCSlevels,whileSMsfartherfromtheAPcanonlysupportlowermodulationlevels.ThisfigureshowstheareacoveredbytheAPandtheeightringscorrespondingtooneoftheMCSlevelssupportedbytheePMPsystem.

Assuminga90sectorantennaattheAP,theareascoveredbytheAPateachmodulationlevelareshowninthenexttable.

MCSlevel Area(squaremiles) Area(%)MCS15 5.21 6.64%MCS14 5.28 6.60%

26

MCS13 15.71 20.02%MCS12 52.39 66.74%MCS11 0 0%MCS10 0 0%MCS9 0 0%MCS1 0 0%

TheareacalculatedforMCSlevels11to1isequalto0,becausethesectorunderconsiderationislimitedat10milerange,sotheassumptionisthattherearenousers(andthereforenoareacovered)beyond10miles.Thesametablealsoshowsthepercentageofthetotalarea(withinthe10milerange)coveredwitheachmodulation.SinceallSMsareassumedtobeevenlydistributedinthecoveredarea,thesepercentagesalsorepresentthepercentagesofSMscommunicatingateachoftheMCSlevels.Similarcalculationsaremadefortheuplinkcase.

CalculatetheDLtimeandtheULtimeallocatedforeachMCSlevelThetimeintheDLandULsubframesisdividedamongSMs(andthereforeMCSlevels)proportionallytothepercentageofuserscommunicatingateachMCSlevel.ThefollowingtableshowstheDLandULtimeswhicharecalculatedasDL(UL)timeforMCSX=%areaforMCSX/DL(UL)throughputforMCSX

MCSlevel DLtime(s) ULtime(s)MCS15 0.001539 0.001931 MCS14 0.001750 0.002178 MCS13 0.005863 0.007617 MCS12 0.026527 0.033025 MCS11 0.000000 0.000000 MCS10 0.000000 0.000000 MCS9 0.000000 0.000000 MCS1 0.000000 0.000000

CalculatetheDL,ULandtotalcapacity

TheDL(UL)peakcapacityistheinverseofthesumoftheDL(UL)timesallocatedforeachMCS.Thepeakcapacityisthenmultipliedbyafactor(equalto85%)totakeintoaccounttheAPantennapatternandthefactthattheusersareevenlydistributedinthecoveredarea.

27

DL(UL)capacity=1/sumofallDL(UL)timesperMCS*antennafactorThetotalcapacityissimplythesumoftheDLandULcapacities.DLCapacity=23.8MbpsULCapacity=19.0MbpsTotalCapacity=42.8Mbps

28

Appendix B

Example of calculation of Number of Enterprise and Residential Users Letusassumethefollowingconfigurationparameters:

Asshowninthefigure,SMsclosertotheAPutilizeanintegratedantenna,whileSMsfartherfromtheAPutilizeeitheroneofthetypesofconnectorizedantenna.Withtheseconfigurationparameterstheresultingcapacitiesare:

Theplansofferedtoenterprisecustomersare:








Frame duration 5.0 [ms]Number of SMs/sector

Duty cycleMax Combined AP Tx power (min MCS) 30 [dBm]

Interference measured?SM antenna for measuring interference

Downlink interference level 0 [dBm]Uplink interference level 0 [dBm]

% of SMs with uneven paths (single stream MCS)PTP Mode

0%Dual Stream

miles

Others

LOS

3050/50

Connectorized

Yes

NoePMP FORCE 100

Cambium 90 sector

30.6 Mbps24.3 Mbps54.9 Mbps

Avg UL capacityAvg DL capacity

Avg Tot capacity

29

Theplansofferedtoresidentialcustomersare:

Downlink Uplink Average

Distribution 4.0 Mbps 1.0 Mbps 10%

15.0 Mbps 5.0 Mbps 20% 20.0 Mbps 10.0 Mbps 50% 30.0 Mbps 15.0 Mbps 20%

ForplansA(Enterprise)andB(Residential):AverageDLThroughput/userEnterpriseAverageDLThroughput/user=3Mbps25%+5Mbps50%+10Mbps20%+20Mbps5%=6.25MbpsResidentialAverageDLThroughput/user=4Mbps10%+15Mbps20%+20Mbps50%+30Mbps20%=19.40MbpsAverageULThroughput/userEnterpriseAverageULThroughput/user=3Mbps25%+5Mbps50%+10Mbps20%+20Mbps5%=6.25MbpsResidentialAverageULThroughput/user=1Mbps10%+5Mbps20%+10Mbps50%+15Mbps20%=9.10MbpsDLUsers/sectorEnterpriseDLUsers/sector=FLOOR(30.6Mbps/6.25Mbps5)=24ResidentialDLUsers/sector=FLOOR(30.6Mbps/19.40Mbps15)=23ULUsers/sectorEnterpriseULUsers/sector=FLOOR(24.3Mbps/6.25Mbps5)=19ResidentialULUsers/sector=FLOOR(24.3Mbps/9.10Mbps15)=40TotalUsers/sectorEnterpriseTotalUsers/sector=min(24,19)=19ResidentialTotalUsers/sector=min(23,40)=23ParametersareselectedefficientlyifthenumberofDLUsers/sectorisapproximatelyequaltothenumberofULUsers/sector,sothatnodownlinkoruplinkresourcesremainunutilized.PlanCisamixofplansAandBwithacertainpercentageselectedbytheuser.ForthisexamplethepercentagesofplansAandBareboth50%.

Average Distribution

3.0 Mbps 3.0 Mbps 25%5.0 Mbps 5.0 Mbps 50%

10.0 Mbps 10.0 Mbps 20%20.0 Mbps 20.0 Mbps 5%

Downlink Uplink

30

DLUsers/sector=FLOOR(30.6Mbps/(50%6.25Mbps/5+50%19.40Mbps/15)=24ULUsers/sector=FLOOR(24.3Mbps/(50%6.25Mbps/5+50%9.10Mbps/15)=26TotalUsers/sector=min(24,26)=24Inthiscase,thetotalnumbersofuserscalculatedfortheEnterpriseplans(19users),fortheResidentialplans(23users)andforablendedplan(23users)arealllowerthantheNumberofSMs/sectorparametersconfiguredintheSYSTEMCONFIGURATIONsectionintheLINKBUDGETtab.

epmp capacity planner guide r2.3

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