IMS计费系统的设计与实现

《IMS计费系统的设计与实现》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、西南交通大学硕士学位论文IMS计费系统的设计与实现姓名：周盛申请学位级别：硕士专业：计算机应用技术指导教师：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饥tations．ThetheoriesrelatedtoIMSisalsoanalyzedindetail，suchasnetworkarchitecture，functionentities，r

6、eferencepoints，offiineandonlinechargingarchitectures，relatedprinciplesofcharging，andetc．Thefunctionentitiesrelatedtochargingandtheprocessesofoffiineandonlinechargingaremainlyanalyzed．Secondly,thefunctionsrelatedtoCSCF(oneofthemostimportantnetworkentitieslaredesignedandrealizedaccordingtodifferentcha

7、rgingmodes，mainlyincludingthelibraryofCTF,theCDR(Chargingdatarecord)saving西南交通大学硕士研究生学位论文第1II页_———ll-_l_--—-—l_lll—_l—l——I_-l-l_l-__—-llll—一mechanismofCDF,andSOon．OperationsofCSCFunderdifferentchargin