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SCPwangyulong@ebupt.com::TheStudyonthemobileintelligentnetworkSCPOverloadControlinMulti-ServiceEnvironmentAbstract:AmobileintelligentnetworkSCPoverloadcontrolmodelisdesigned.Anadaptivewindowcontrolalgorithminmulti-serviceenvironmentisproposed.ThealgorithmwhichisbasedonSCP,implementmulti-serviceoverloadcontrolbydynamicadjustmentwindows.Inaddition,thealgorithmalsohasstrongerrobustnessthanCallgapandPercentalgorithms.Thetheoryanalysisandtheresultofsimulationsprovethealgorithm’seffectivenessandfairnessinmulti-serviceenvironment.Keywords:overloadcontrol,mobileintelligentnetwork,multi-serviceenviroement,adaptivecontrolwindowalgorithm,Callgap,PercentNo.200313006SCP(ServiceControlPoint)ITU-TINAPCallgapPercent[12]:CallgapActivateServiceFilter,SSPSCPCAMEL2CustomizedApplicationforMobileNetworkEnhancedLogic[3,4];WIN(Wirelessintelligentnetwork)Phase1Pre-paidchargingPhase2[5-7]SSPSCPCAMEL2WINPhase2SSPSCPSCPSCPSCPSCP_____________________________________________________________________________[8-13][14]SSP123SCPa).b).c).SCPd).SCPa)b)c)a)bSCPcSCPSCPSCPSDFServiceDataFunctionSCPSCP1BEGINBEGINBEGINBEGINSCPSCPM/M/n/n中国科技论文在线_____________________________________________________________________________µm1=sw?e?lM/M/n/nkmlrrr=≤≤=∑=)1()0(!!0nklkpnllkknpppn=SCP)2()1(npe-=ll)3(1∑===nkkekpNmlLittle)4(1ml==eNws34N),1[∞∈∃Nmaxn,minn],1[minNn∈),(max∞∈NnNn→maxNn→min1maxmin-=nnminnN=swNSCPm)1(miSi≤≤i中国科技论文在线_____________________________________________________________________________⋅⋅⋅R)1(miwsi≤≤i)5(1RwSmisii=∑=ABm)1(mkk≤≤ik)6()1(miwwsksiik≤≤=aikikak*kS5)7(*RwSskk=kik)8()(kikikSSSf=5678)9()(1*∑==mikikkikkSSfSa9kS8iS1SCP中国科技论文在线_____________________________________________________________________________)0(=n)0(minn1)0(maxn)1(mii≤≤)0(ilk)0(1)0(*iikmiklal∑==i)1(miwsi≤≤ika2jtj)(jilj)1(mii≤≤k)(1)(*jiikmijklal∑==)1()(miwji≤≤ijsijiww)(343),()1(max)()(max-=jjjnnMinn)1(min)(min-=jjnnj)(jel⎪⎪⎩⎪⎪⎨⎧≥+-==)11()(]]2),1([,[)10()()(min)(*)(max)(min)(*)(min)()(min)(*)(*)()(skjjkskjjnjkskjjskjjkjkjwnwnnpMinwnMaxewnejllllll54),()1(min)()(min-=jjjnnMaxn)1(max)(max-=jjnnj)(jel)12(]2,[)(max)(minj)*(skjjkjwnnMine+=ll55j+1]]),([,[)(min)()(max)1(jskjjjnweMaxnMinn⋅=+l1)(max)(min-=jjnn,中国科技论文在线_____________________________________________________________________________)(max)(minjjnn=6j)(jel9)(jkS8)(jiSii)1(),()()()(miSMinejijiji≤≤=ll7)13(1)()(∑=-=Δmiikjijeeall)1()()(miejijii≤≤-=Δll0Δmkkkfff≥•••≥≥21101Δ)(1jel⎪⎩⎪⎨⎧ΔΔΔ+=Δ≥ΔΔ+=kkjjkjjSeSe111)(1)(1111)(1)(1/aalal13Δ2m0=Δ8)1+jt2maxminnNn≤minnmaxnNjskjjkwn)(min)(*lNnj≤)(min10)(jelskjwn)(min)(jelj+1)(min)1(jjnn+123450.250.50.7511.251.51.752中国科技论文在线_____________________________________________________________________________)(min)1(minjjnn=+skjjkwn)(min)(*≥l1112)(jelj+1)(min)1()(max(min2jjjjnnnn≥≥++:j+1)(min)1(minjjnn≥+j+1)(max)1(maxjjnn+jj+1)(minjn)(maxjnl1)(max)(min-=llnn)(minln67ITU-TCallgapPercent[15]SSPCallgapPercentlelCallgapge*1lll+=gPercent)1(be-=llb2SCP1SCP12b=0.5;g=0.5;n=2,u=0.75,2n=2lCallgapPercentn,SCPSCPABCSSPSCPCBASSS::=321C050100150200050100150200250300350中国科技论文在线_____________________________________________________________________________)(13=CSf,2)(23=CSf,1)(33=CSf,1.0,15.02.0321===sss=10010-50A,B,C503010/50-150350/150-200503010/35050-150300=AS200=BS100=CS1500-50A,B,C503010/50-10035035010/100-150350350350/150-200503010/45050-100CCAA100-150CCC321150550-100100-150100SCPCAMEL2WINPhase1Pre-paidchargingPhase2SCPITU-TQ.1214DistributedfunctionalplaneforintelligentnetworkCS-1[S].1995ITU-TQ1218InterfaceRecommendationsforintelligentnetworkCS-1[S].19953ETSIGSMTS03.78v6.2.0.Customizedapplicationsformobilenetworkenhancedlogic(CAMEL)phase2[S].19974ETSIGSMTS09.78v6.2.1CAMELapplicationpart(CAP)specification[S].1997050100150200050100150200250300350050100150200020406080100120中国科技论文在线_____________________________________________________________________________[S].20006TIA/EIA/IS-826,Wirelessintelligentnetworkcapabilitiesforpre-paidcharging[S].20007TIA/EIA/IS-848,Wirelessintelligentnetworkcapabilities[S].20018SmithDE.EnsuringrobustcallthroughputandfairnessforSCPoverloadcontrols[J].IEEE/ACMTransonnetworking,1995,3(5):538-548.9RyoichiKawahara,TakuyaAsaka,ShuichiSumita.Overloadcontrolfortheintelligentnetworkanditsanalysisbysimulation[J].IEICETRANS.COMMUN.,1995,E78-B(4):494-503.10NorthcoteBS.AnalysisSCPcongestioncontrolstrategies:Astudyofcontroldynamics[A].InIEEEIntelligentNetworkWorkshopIN’96[C],Melbourne,Australia:199611KihlM,NybergC.AstudyofmethodsforprotectingSCPfromoverload[A].IEETelecommunications’ConferencePublicationno.404[C],1995:125-12912PhamXH.,BettsR.Congestioncontrolforintelligentnetworks[J].ComputerNetworksandISDNSystem,1994,26(5):511-524BergerAW.Overloadcontrolusingratecontrolthrottle:selectingtokenbankcapacityforrobustnesstoarrivalrates[J].IEEETransonAutomaticControl,1991,AC-36(2):216-219中国科技论文在线_______________________