gsm-r无线组网与其越区切换算法和优化

《gsm-r无线组网与其越区切换算法和优化》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、电子科技大学UNIVERSITYOFELECTRONICSCIENCEANDTECHNOLOGYOFCHINA专业学位硕士学位论文MASTERTHESISFORPROFESSIONALDEGREE论文题目GSM-R无线组网及其越区切换算法和优化专业学位类别工程硕士学号200991040215作者姓名杨文指导教师董宇亮副教授万方数据ABSTRACTABSTRACTAsaspecialrailwaycommunicationstechnology,GSM-R（GSMforRailways）isnowbeingusedinthefieldoft

2、herailwaysystemandisbeingcontributedtothedevelopmentofrailwayindustryallovertheworld.Forthespecialtyofrailwayenvironment,GSM-Rsystemisrequiredforitshighreliabilityandalsorequireditshigh-levelrequirementsincoverprobabilityandsystematicredundancy.Thereliabilityandvalidityof

3、handoverareimportantparametersforGSM-Rsystemperformance.Dealingwithhandoverproblemandchooseoptimizemethodwillgivepositiveeffecttoimprovesystematicvalidityandreliability.Interferenceplaysanimportantroleininfluencingthecommunicationqualityandthecuttingoffrateofthenetwork,wh

4、ichalwaysimpairsthecommunicationqualityandbringsthenetworkserviceperformancedown.Theinterferenceusuallyaffectsournetworkindifferentnegativeways.Asthecoreproblemofnetworkoptimization，solvingtheproblemofreducingwirelessinterferencebecomesmoreimportantthanbefore.Inthefollowi

5、ngthesis,weintroducetheseproblemsabove,andgivesomebasicconceptsonthenecessarytheory.WiththepracticalapplicationsofGSM-Rsystem,we’vedonesomeworkandresearchinthosefields.Themainresultsareasfollows:1.Thisthesisstudiestheconceptaboutthecoverprobability,andintroducesthecalcula

6、temethodforoverlaparea.Wealsodiscussthemethodofusingwirelesssignaltocoverredundantnetworkandthemethodofcalculatingofpathloss.2.Thisthesisanalyzestherailwaylineswitchingabnormalcasesofmergingandcrosssections.Itdiscussesprinciplesindesigningcross-arearailway,andproposesapro

7、jectofbuildingdistributedbasestationstosolvetheswitchproblems.Atthemeantime,weprovidetheblueprintofsettingupCheng-Guanroad’swirelesssignalcoverage,theblueprintforDujiangyan,Juyuan,Lidui,triangularareasignalcoveroptimizationscheme,andtheLiduibranchtunnelsignalcoveroptimiza

8、tionschemeforcomparing.3.ThisthesisproposesanadvancemethodtoimprovethePBGThandoverarithmetic.Com