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1、西南交通大學(xué)碩士學(xué)位論文IMS計(jì)費(fèi)系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)姓名：周盛申請學(xué)位級別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：陶宏才20080501AbstractAtpresent，thetelecommunicationnetworkisdevelopedintothenextgenerationwhichisbasedona11．IPandcanprovidewithawiderangeofservices·Underthisdevelopmenttrend，thearchitecturecombiningfixedbroadbandnetworkwithmobilenetworkisexpectedto
2、beimplementedwithIMS(IPmultimediasubsystem)．IMSisspecifiedasasub。systemwhichsupportsmultimediaservicesby3GPPbasedonRelease5．IMSprovidestheplatformformultimediaservicesundertheIPprotocol，andsupportsbothfixedandmobileaccessmode．Becauseofitsaccessindependency,IMSisstudiedbystandardorganizationssuchas3G
3、PPtoexpanditscapabilities，SOaStoprovidewithuniversalplatformbasedonSIP(Sessioninitiationprotoc01)sessionandtoconstructthecommoncorenetworkcombiningfixednetworkwithmobilenetwork．AlongwiththeintroductionofIMS，alotofnewserviceswillemerge，andthenthecorrespongingchargingsystembecomesveryimportant·IIlthis
4、thesis，thestandardsrelatedtochargingspecifiedby3GPParestudied，thenafferreferringtOthearchitectureincludingbothoffiineandonlinechargingdefmedinthestandards，thefunctionentitiesinthatarchitectureisdesigned，involvingCTF(Chargingtriggerfunction)andCDF(Chargingdatafunction)·Andfinally,theoffiineandonlinec
5、hargingfunctionofCSCF(Callsessioncontrolfunction)inIMSisimplementated．Firstly,thisthesisintroducesthebackgroundofIMSanditsresearchstatusbothathomeandabroad，includingrelatedstandardsandcommercialexperim饑tations．ThetheoriesrelatedtoIMSisalsoanalyzedindetail，suchasnetworkarchitecture，functionentities，r
6、eferencepoints，offiineandonlinechargingarchitectures，relatedprinciplesofcharging，andetc．Thefunctionentitiesrelatedtochargingandtheprocessesofoffiineandonlinechargingaremainlyanalyzed．Secondly,thefunctionsrelatedtoCSCF(oneofthemostimportantnetworkentitieslaredesignedandrealizedaccordingtodifferentcha
7、rgingmodes，mainlyincludingthelibraryofCTF,theCDR(Chargingdatarecord)saving西南交通大學(xué)碩士研究生學(xué)位論文第1II頁_———ll-_l_--—-—l_lll—_l—l——I_-l-l_l-__—-llll—一mechanismofCDF,andSOon．OperationsofCSCFunderdifferentchargin
