ABSTRACTABSTRACTABSTRACT:munication,GSM-,municationisintransitionfromanaloguemodetoGSM-—R,,thestaticinteroperabilitytestamongHuawei,plishedinGSM—RlabsoftheMinistryofRailways,·Rfieldtest,,work,terrainconditionsofmarshallingyard,functionalneedsandoperationalrequirements,’Smore,it’workofmarshallingyardreasonablyowingtoitslargetrafficandthescarcityofGSM-,worksWasresearchedinthispaper;Basedontheresearch,threeoptionsfortransmittingspeechanddatasimultaneouslywereputforward,’thefocusofmarshallingyardduringfieldtestwereinvestigatedindepth;ThentakingnorthWuhanmarshallingyardforexample,worksofWuhanwerepresented,whichincludetheimplementationsteps,long·workinfrastructure,newtestcasesfortransmittingdataandspeechsimultaneously,etc.;Subsequently,plexity,,SM—;ThenthecoveragerangeofeveryBTSwasdeducedbyusingtwo—;workplanningschemeswereproposedandtheoptimumonewaschosenbetweenthemconsideringthefollowingfactors:plexity,constructionperiod,:GSM—R:Fieldinteroperability;Marshalingyard;workplanningCLASSNO:;UDC-,除了文中特别加以标注和致谢之处外,论文中不包含其他人已经发表或撰写过的研究成果,也不包含为获得北京交通大学或其他教育机构的学位或证书而使用过的材料。与我一同工作的同志对本研究所做的任何贡献均已在论文中作了明确的说明并表示了谢意。学位论文作者签名:京涛艳签字同期:砷年‘月I多日学位论文版权使用授权书本学位论文作者完全了解北京交通大学有关保留、使用学位论文的规定。特授权北京交通大学可以将学位论文的全部或部分内容编入有关数据库进行检索,并采用影印、缩印或扫描等复制手段保存、汇编以供查阅和借阅。同意学校向国家有关部门或机构送交论文的复印件和磁盘。(保密的学位论文在解密后适用本授权说明)学位论文作者签名:京:惫艳签字同期:伽7年多月I,日导师签名:纠拟榔期:砷年6月夕日致谢本论文的工作是在我的导师彭朋和钟章
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