基于物联网的通信节点与MAC协议分析与设计

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1、AbstractInternetofThingsisanimportantpartofthenewgenerationofinformationtechnology.Itisalsoanotherrevolutionarydevelopmentofinformationindustry.WirelessSensorNetworkisthemostdirectmanifestationofInternetofThings,WirelessCommunicationNodesandMACProtocolbelongtothelowestlevelofWirelessSensorNetwork,

2、Theyarethefoundationoftheentiresystemofcommunicationandinformationperception.Inthispaper,IstudyandcompareonwirelesscommunicationnodesandMACprotocolfortheproblemsofshort-distancewirelesscommunicationnetworksexistinthenetworkingindustryonthebackgroundofSmartCityProjectinShunDedistrict,GuangDong.Thee

3、xistingwirelesscommunicationnodesandMACprotocolalgorithmareimprovedandperfectedcombinedwiththediversificationoftheInternetofthingsapplicationfeatures.Themaincontentsinthepaperareasfollows:AccordingtotheanalysisofcharacteristicoftheInternetofthings,weputforwardthedesignoftheWirelessCommunicationsys

4、tem,anddesignasuitablehardwaresystemafteranalysisandcompareofthecurrentshort-rangewirelesscommunicationssystem；BasedontheInternetofthings,wedesigntheEPCencodingspecificationaswellasthemainnodesandchildnodesandthecommunicationframeformatsystemsatalllevelsofthewirelessnetworknodes.ltmakesthesystemmo

5、reconducivetotheexpansionandoptimization；Asforthesensornodes'positionsarefixedinWirelessCommunicationsystem,theimpactofchangeonthenodes'locationperformanceisn'tunderconsidering,wedesignadynamicadaptiveMACprotocolalgorithmonwirelesscommunicationsystembasedondistancelevelquantization.Atthesametime,f

6、orlarge-scalewirelessnodescommunicationchannelconflictanddelayissues,weimprovethebackoffalgorithmundertheCSMA/CAmechanism；Finally，accordingtothedesignideasoftheimprovedalgorithmforMACprotocol,wemakesoftwaresimulationofMACprotocolandcommunicationtestforWirelessCommunicationNodes・Thedesignofwireless

7、nodesandMACprotocolhasgreatversatilityandscalabilityofnetworkportabilityinwirelesscommunicationsystem.Thewirelesssensornodescostlittleandhavesystemexpansion.ImprovedMACprotocolalsoreducestheprobabilityofdatacolli