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1、第37卷第9期铁道学报Vol.37No.92015年9月JOURNALOFTHECHINARAILWAYSOCIETYSeptember2015文章编号:1001-8361(2015)09-0075-07基于移动中继增强机制的多机车同步操控无线通信策略袁天洋1,吴昊1,柴金川2,丁建文1(1.北京交通大学轨道交通控制与安全国家重点实验室,北京100044;2.中国铁道科学研究院国家铁道试验中心,北京100015)摘要:国内万吨以上重载列车需采用多机车牵引同步操控(LOCOTROL)系统,GSM-R网络作为其通信平台能够在
2、一般情况下满足该系统对通信服务质量的要求,然而,现有GSM-R网络存在铁路沿线弱场覆盖情况,且其通信链路环节过多导致丢包率和传输时延显著增长,因此需进一步提高同步操控系统的通信可靠性。针对此问题,本文在现有通信机制基础上提出了移动中继增强机制的多机车同步操控无线通信策略(简称移动中继增强机制),并通过Matlab仿真分析其通信可靠性,然后对移动中继增强机制基于有色Petri网建模,并对该机制下不同传输模式的可靠性进行了仿真。结果表明,移动中继增强机制不仅可以基本满足同步操控系统对通信可靠性的要求,且相比GSM-R机制,可
3、以明显提高同步操控系统的通信可靠性。关键词:移动中继;同步操控;通信可靠性;有色Petri网中图分类号:U285.2文献标志码:Adoi:10.3969/j.issn.1001-8361.2015.09.011AMobileRelayEnhancedMultipleLocomotivesLOCOTROLWirelessCommunicationStrategy1,WUHao1,CHAIJin-chuan2,DINGJian-wen1YUANTian-yang(1.StateKeyLaboratoryofRailTraff
4、icControlandSafety,BeijingJiaotongUniversity,Beijing100044,China;2.NationalRailwayTrackTestCenter,ChinaAcademyofRailwaySciences,Beijing100015,China)Abstract:Toguaranteethesynchronizationofmultiplelocomotivesofaheavyhaultrainwhichweighsover10000t,LOCOTROLsystemisu
5、sedforcontrolling.GSM-Rnetwork,asthecommunicationplatformfortheLOCOTROLsystem,canmeettherequirementsofthesystemforcommunicationservicequalityinmostca-ses.However,thecommunicationreliabilityneedstobefurtherimprovedsinceweak-fieldcoveragecasesexistinthecurrentGSM-R
6、networkalongtherailway,andtoomanycommunicationsegmentsmayinducehighpacketlossrateandsignificantlyincreasedtransmissiondelay.Tosolvetheseproblems,amobilerelayen-hancedmultiplelocomotivesLOCOTROLwirelesscommunicationstrategy(MREstrategy),whichisbasedonexistingcommu
7、nicationstrategies,isproposedinthispaper.Matlabsimulationshavebeenmadetoanalyzethecommunicationreliabilityofthenewstrategy.ColoredPetrinetmodelsarebuiltforMREstrategy,tosimulatethecommunicationreliabilityunderdifferenttransmissionmodesofthestrategy.Theexperimentr
8、esultsshowthattheMREstrategycanbasicallymeetthecommunicationreliabilityrequirementofLOCOTROLsystemandsignificantlyimprovethecommunicationreliabilityaswell,comp
