提升MOS值ATU分析报告

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1、ATU分析MOS<2.8问题点£X：12a747MJUt：XX7M742oomX).010t53Ol$TII$Bnnn)OOMMU%3!•

2、sc«iwn2mwnxKfc”」<2NC3NC43GSMServing/Neighoor*O1STIIStAI111300MMUU!•<□CSMRxSoaG)S3OI$TIISttOI111300MCMW)!•<二”I[J•H■QuoRJ怦QutfSub•□GSMC/IC3Qoiriis&mnivoM

3、xuub<■PmmeWvAmIMS7WWWTO1ARKNfVI：1Timeitoogv—JEwitCodtEvtnUnfo9003MmdOvtfAtttfrotTtntIO:3M>9.M35003HjndovtrAtUnvt10:»19.730ATU路测图如图所示，测试车辆由北向南行驶至和兴南路与环城南路交界以南450m处路段，ATU测试时占用市场部3小区为主服务小区，MOS值2.12很差.□GSMLayer3AndRLC/MAC01STi5e20!I1190094044as3lo

4、xiRLC/MACDLRRHandoverCommand'10:30^)9.063•me10:30:08.45910:30:08.891Uyer3ULRRMeasurementReportDLRRSystemInformationTv...DLRRPhysicalInformationUlRRHandoverCompleteULRRMeawrementReportDLRRSystem!nfonTy...ULRRMtawrtmtntReportDLRRSystemInfocmatonTy...ULRR

5、MeasurementReportDLRRSystemInfocmatonTy...10:30^)9.18710:30:09.18710!30-09.4»10:30:09.87510:30:09.91910:30:10.35510:30:10.39910:30:10.835层三信令图原始数18FieRow…FrameN…TimeLongKudeLatitudeDLM…A®517043259510:30:13.568120.7452...30.75219...2.12

6、6938435409:47:13.55112

7、0.7621...30.76181...2.15317302002510:10:53.494120.7771...30.75131...2.155890368409:46:13.566120.7579...30.76428...2.16202851277009:59:53.472120.7641...30.75358...2.27248731567610:04:13.532120.7714...30.74563二2.31155395409:42:13.569120.7620...30.76613...2.361

8、4596920609:54:33.516120.7841...30.75507...2.37181221142809:57:53.617120.7701...30.75322...2.47618143900010:39:53.527120.7539..・30.74679..・2.48]14247898309:54:13.543120.7857...30.75576...2.66320772024910:11:13.563120.7767…30.75131...2.66394042489310:18:13.522

9、120.7622…30.76412...2.66579503655110:36:13.609120.7509...30.74510...2.73635454011510:41:33.528120.7608…30.74419...2.731163891031709:56:13.776120.7762...30.75341...2.75547913455510:33:13.525120.7494...30.74710..・2.7514AQ777QA7717H72277ftMOS值分布图【问题分析】：随着测试车辆行进

10、，ATU上报测量报告中BSIC：47的小区信号（船厂头3）越来越强,随后发起切换，但此时市场部3小区距此已有650m,由于覆盖距离较远信号质量迅速恶化导致Rxqual达到7级，C/I在7db左右，造成MOS值衰减至2.12。市场部3小区天线挂高36m,机械下倾角2度，根据仿真渲染图可以看出有越区现象，导致在该区域切换关系混乱，多次与周边小区发生乒乓切换，从而Rxqual恶化造成MOS值