硕士论文-CDMA移动通信系统中呼叫准入控制技术研究

江苏科技大学硕士学位论文CDMA移动通信系统中呼叫准入控制技术研究姓名：史志涛申请学位级别：硕士专业：@指导教师：吴越200501011CDMAInternetCDMA1.2.3.CDMAAbstract2TheResearchonCallAdmissionControlofCDMAMobileCommunicationSystemAbstractWiththedevelopmentofwirelesscommunications,therequirementforitbecomesmuchhigher.Thenextgenerationwirelessnetworksarebeingcalledupontosupportnotonlydatatrafficbutalsoreal-timeinteractivemultimediatrafficsuchasaudioandvideo,anditisnecessaryforwirelessnetworkstoprovidequality-of-serviceguaranteesforthemultimediaapplications.However,thebroadbandnatureoffuturewirelesstrafficisgreatlythreatenedbythelimitedwirelessspectrum.Consequently,effectiveandefficientmanagementoftheresourcewillbeanimportantissueforfuturewirelessnetworks.Sincethecalladmissioncontrol(CAC)isoneofthemostimportantkeytechnologies,thispaperismainlyfocusedupontheCAC.MosttraditionalCACschemesdealwithuplinkanddownlinkcontrolindependently,whichfocusedonpriorityamongtrafficsorprioritybetweennewcallandhandoffcall,mainlyaboutvoiceanddatatraffics.Itisapitythatfewofthemconsideredtwoprioritiestogetherandvideotraffics.Alloftheseleadtoinaccurateanalysisofrealmultimedianetworkofnextgeneration.Inthispaper,weproposeanewcalladmissioncontrolschemeforCDMAmobilecommunicationsystem.Theschemeproposedinthispaperisbasedonsignal-to-interface(SIR)measurement.Wetakeaccountofthetrafficasymmetrybetweenuplinkanddownlink,whichisthemostimportantcharacteristicofmultimediatraffic.Theproposedschemeguaranteesthepriorityofhandoffcallrequestovernewcallrequestaswellasreal-timecallsovernon-real-timecalls.AtlastweevaluatetheperformanceofproposedschemeusingMarkovanalysis,byusingcomputersimulationweobtainedsomemorereasonableandaccuratedata.Theresulthasimportantreferencevalueinrealcellularsystemanalysisanddesign.Keyword:qualityofserviceQoS,CDMA,cellularcommunicationsystems,calladmissioncontrol,radioresourcemanagement.31.1InternetGSMIS136IS-95HSCSD,HighSpeedCircuitSwitchDataGPRS,GeneralPacketRadioServiceGSMEDGE,EnhancedDataRatesforGSMEvolutionGSMphase2+Internet(CCIR)IWP813FPLMTS(FuturePublicLandMobileTelephoneSystem)1991TG81FPLMTS1992ITUWARC(WorldAdministrativeRadioConference)FPLMTS2GHz:1885-2025MHz2100-2200MHz,230MHz1994ITU-TITU-RFPLMTS1995FPLMTS2000(IMT2000InternationalMobileTelecommunication-2000),UMTSUniversalmobileTelecommunicationSystem.IMT20003G2Mbit/s41996ITU19974IMT2000IMT2000RTT(CWTS)ITUTD-SCDMA[1]ITU10WCDMACDMA2000TD-SCDMA1999115ITUTG8/1183TDMACDMAFDDCDMATDD5TDMACDMATDDCDMATDD[2,3]TDMAIMT20003GCDMAFDDTDDUTRATDDTDSCDMACDMA810GSM35CDMACDMA100%GSM40%CDMACDMAFDMATDMACAC[4,5][6]UMTS2005152010110TDDTDSCDMATDSCDMA5FDDTDD1.2[7]CDMACDMAGPRSCDMA1.CBP2.CDP3.BU1.31.3.112QoS[8][9]6QoSQoSQoS1.3.2CDMADS-CDMA()[10-17],[13],[11-13];[14,15][16],,,[18][17],,WCDMA()QoS(),[19,20],[21]11976M.J.FischerMB,MovableBoundary[22],[23-28]MBMBFBFixedBoundary72000M.Ma[29]2)D.HongS.Rappaport1986[30][31][32-34][35-37][38,39]CAC[40][41]BSMTBSMTBSGPS23550[42]GPS8[42,43]BSMTCAC3CACQoSCACCAC[44]QoS[45]QoSQoS[46]QoS[47]QoS[48][49][50]91.4CDMACDMA1)2)3)4)CDMACACCDMACAC10CDMA11CDMA2.1CDMACDMACDMA2.12.1CDMAm1-1/KKmmmCDMACDMA(PN)CDMACDMA2GHz800MHz900MHz1.8GHz1.9GHz2GHz199713M20007000CDMA12FDMATDMACDMACDMA(CI)1CDMACDMA2010GSM4-5CDMACDMA.,.,,,.,,CDMACDMACDMACDMACDMASSMACDMA12BtBiGp=BtBiCDMA132.2CDMACDMA,,:1),;2),;3),;4),QoS(,QoS,;,QoS,),CDMA,,()()()()CDMAQoSCDMACDMA2.2CDMAQoSCDMA142.22.22.2.180dBCDMA1CDMA1520dB30dBCDMACDMA2.2.2CDMAMSCCDMACDMACDMAPN43TADDCDMA16T_DROPMSCMSC2.2.3CDMACDMACDMACDMACDMA2.2.4TDDCDMACDMA17FCADCAHCA2.2.5CDMA2.3CDMACDMAFDMATDMAFDMATDMACDMAQoSCDMACDMASIRSIRRNCRadioNetworkControllerRNCSIRSIRZ.LiuM.E.Zarki1994SIRCAC[51]QoSSIRSIRCACSIR[51,52]SIRCACQoSCDMA18[53],,,,CDMACDMA19CDMA3.1CDMA,,,(NRTD)(RTT);CDMA,[54]CDP[54]TRRTTRRR[55][54]RR[54][55][56]tidCDMA20tt+d3.2CDMA3.2.1LuiRdiR(01)iL≤≤−iijijijudnhCDMA213.2.2i1.0/bEN0/bENukMki,ukiMik1,1uuuiikiuukukREMWγγ•−=+3.1uWukγk3.12.dkMkik,dkiM1,1(1)dddiikiddkdkREMWγργ•−=+−3.2dWρ3.23.,ukiΦ,dkiΦik,uki∆,dki∆ikiCDMA22,,,,(01)uuddkikikikiEandEkL≥Φ≥Φ≤≤−3.3i3.4,,,,(01)uuddkikikikiEandEkL≥∆≥∆≤≤−3.43.13.2ik3.2.31),,,,,(01)uuddkikikikikL∆Φ∆Φ≤≤−3.52)ijijiji3.33.310/bEN,ukiEuiR0/bENuiγuuuuiijjRRγγ,,uukikjEE,,uukikj=ΦΦ3.3iijuuuuiijjRRγγ=i,,uukikjΦΦR0/bEN3)3.33.44L24L,,,,,,,(01,01)uuhuunddhddnkikikikikikikikikLiLββββγγγγ∆=Φ=∆=Φ=≤≤−≤≤−3.6niβhiβi13.62LhniiββCDMA233.33.3.11)i0≤i≤L-1iΛ2)i1/iv3)i1/iµ4)i1/uiϑ1/diϑ1/uiω1/diω11-3iiλ2:4i,udiiαα()/uuiiuuiiϑωαω=+()/ddiiddiiϑωαω=+3.3.2in0≤i≤L-1iS011(,,...,).defLsnnn−=3.7SSCDMA24S1.2.3.4.i+Si-Si01L-1i+i+1s(n,n,,n,,n)=LL01L-1i-i-1s(n,n,,n,,n)=LLisi+s(,)nqsi(,)nAsii()()nniqs,iAs,i=Λ3.8hq(s,i)isi+s()()hhiqs,iAs,iλ=3.9(,)hAsiisi-sSi-Scq(s,i)q(s,i)χ()ciiqs,inµ=3.10()xiiqs,inv=3.11π(S)S{}{}{}101---1010()(,)(,)(,)(,)()(,)(,)()(,)(,)iiLnhcdiLnhiiiniLcdiSAiSqSiqSiqSiqSiISqSiqSiISqSiqSiπππ+−=−≥=−+∈=+++=⋅++⋅+∑∑∑3.12()1sSsπ∈=∑3.13CDMA25cIC103.3.3ssϕiliimisϕ0011(,,...,,,...,).defsiiLLlmlmlmϕ−−=3.14sϕs()Qss{}():(0)(0)01siiiiQslnmniLϕ=≤≤≤≤≤≤−3.15sϕk1)0/bENkjCjsϕk()sukHϕ10()LuksjjkjHlCCϕ−==−∑3.16jNjjujjNαujαjuζsϕk)(sukOϕ:10()LuuuksjjjjONCϕζα−==∑(3.17)sϕk)(su