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1、GSMNETWORKPLANING-SWITCHINGGSM网络规划张晓丹Thistestconsistsof17questions.Toanswerchooseonofthethreealternativesandmarkontheansweringsheet.PocketcalculatorandErlangtableisrequired1)HowmanytrafficchannelscanmaximumbehandledbyaTRX?A)1B)4C)82)HowmanyTSarerequiredontheA
2、bisinterfaceperTRXifLAPDA)2B)2,25C)33)HowmanyTSsandE1sarerequiredtoconnectthefollowingaccessnetworktoaBSCwhenaDXCisusedtogetmaximumutilizationoftheE1s?Accessnetworkwith30sitesoftype3/3/3and20sitesoftype2/2/2.LAPD-multiplexingandLAPD-concentrationisused.A)870T
3、Ss,29E1sB)848TSs,28E1sC)780TSs,26E1s4)HowmanyTSsandE1arerequiredfortrafficontheAatrinterfacewhenthetraffictobesupportedis710ErlangandGoS=1%A)738TSs,24E1sB)185TSs,6E1sC)683TSs,23E1s5)Whichtypeofroutingisusedformobiletolandtrafficinthepicturebelow?A)Near-enddro
4、pB)CascadingC)Far-enddrop6)Isflat,meshednetworkarchitecturebestusedinsmall,largeormediumnetworks?A)SmallB)MediumC)Large7)Howmanyphysicalconnectionsarerequiredinanetworkwith10MSCsinaflatfullymeshednetworkandinahierarchicaltransitnetworkwithtwotransits?A)100(me
5、shed),10(transit)B)45(meshed),20(transit)C)100(meshed),20(transit)8)WhichofthefollowingSignalingSystemNo.7Protocolsareusedforroutingofsignalingmessages?A)MAP,TCAPB)TCAP,SCCPC)MTP,SCP1)Whichprotocolperformstheaddressingforcircuitrelatedsignaling?A)MTPB)SCCPC)I
6、SUP2)WhatistheinputandoutputinformationisGTT?A)input:GT,output:DPCB)input:Bnumber,output:DPCC)inputDPC,output:GT3)Alinksethasthreesignalinglinks,onwhichloadsharingisusedandthemaximumloadpersignalinglinkis30%.Whatwillbethemaximumsignalingvolumethatcanbecarried
7、onthislinkset?A)192kbit/sB)57,6kbit/sC)51,2kbit/s4)Whatisthedifferencebetweenmessagetransferona)MTPandb)SCCPlevelinSTP?A)a)GTTisinSTP,b)noGTTinSTPB)a)noGTTinSTP,b)GTTinSTPC)nodifference5)CalculatethesignalingvolumegeneratedontheAinterfaceinthePLMNshownbelow.I
8、nputdata:50000subscribers,trafficpersubscriberis25mE,MHT=100s,numberoflocationupdates=1per/subscriber/busyhour,octets/call(toBSC/TRC)=270,octets/call(fromBSC/TRC)=280,octets/locationupdat
