lte系统csfb语音解决方案研究

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1、分类号爾＠巧级公开、．．九产．．，＇一■Ｉ硕±研究生学位论文ＵＴＥ系统ＣＳＦＢ语音解决方案研究＇古．，，．占＾（申请人；王义平学号：３１３１８５０培养单位：电子工程学院学科专业：电子与通信工程研究方向：ＬＴＥ无线网络ＣＳＦＢ技术研究指导教师：杨自恒副教授校外导师：李君宝、＇完成日期；２０１６年１０月１２日？－／■■—．４＊？＼中文摘要随着通信技术的发展,TD-LTE成为全球最大通信网，为使LTE网络即能满足用

2、户高速无线网络的需求，同时能够承载语音，CSFB技术是LTE系统承载语音的最佳方案。本文首先分析研究LTE网络结构,CSFB的寻呼、附着、呼叫建立、回落等信令流程，从而确立研究方向,重点解决呼叫失败、时延长等用户感知问题，进而需要对核心网设备进行升级改造，对无线网进行优化，通过A接口信令进行监测，对失败信令进行统计分析，进而对邻区切换关系进行配置。最后通过对实际LTE网络指标对比分析和测试,切实提升了网络质量，改善了用户感知，为日后CSFB技术研究工作提供良好的参考价值。关键字：寻呼；TD-LTE；CSFB；呼叫时延-I-

3、AbstractWiththedevelopmentofcommunicationstechnology,TD-LTEhasbecomethebiggestcommunicationsnetworkworldwide.TheLTEtechnologycannotonlymeettheneedsofhigh-speedwirelessnetworkbutalsoenablethevoicetobecarriedoutatthesametime.TheCSFBisconsideredtobethebestprogrammeto

4、carryoutthevoiceinLTEsystem.ThisarticlewouldfirstlyanalyseandresearchtheLTEnetworkstructureoverCSFBpaging,attachment,callsetup,downandothersignalingprocesses.Thusthestudyorientationisestablishedtofocusoncallfailure,timedelayandusers’perceptionproblems.Andthen,thec

5、orenetworkequipmentshouldbeupgradedandthewirelessnetworkshouldbeoptimized.Additionally,itwouldstatisticallyanalyzeandmonitorthefailureofsignalingthroughtheAinterfacesignaling.Intheend,theadjacentswitchingrelationshipsarefurtherconfigured.Finallythroughthecomparati

6、veanalysisandthetestoftheactualLTEnetworkindex,thequalityofthenetworkwouldbeimprovedeffectivelyandusers’perceptionwouldbeenhancedeffectually.ItwouldauthenticallyprovideagoodvaluablereferenceforthefurtherresearchoftheCSFBtechnology.Keywords：Paging;TimeDivisionLongT

7、ermEvolution;CircuitSwitchedFallback;callblockingtimedelay-II-目录中文摘要...........................................................................................................................IAbstract................................................................

8、...........................................................II第1章绪论......................................................................................