Zigbee无线组网技术的研究.doc

（此文档为word格式，下载后您可任意编辑修改！）中南大学硕士学位论文Zigbee无线组网技术的研究摘要ZigBee是一种新兴的专为低速率无线个域N(LR．WPAN)-而设计的低成本、低功耗的短距离无线通信协议，能够广泛的应用于军事，工业，智能家居等领域。但由于ZigBee技术出现较晚，其规范及应用仍在不断的完善和发展之中。通过对Zigbee协议的网状网络组网方案的研究及仿真分析，提出了改进的组网方案，简化了原方案中入网的流程，减小协调器对节点加入的处理时间。仿真发现改进的组网方案能有效的减少了入网延迟，避免了冲突。针对AODV算法高控制开销的不足，提出了基于最快路径的AODVjr算法，通过简化路由发现和路由表、删除Hello消息以达到降低控制开销的目的。为了更进一步达到低控制开销的目的，本文提出AODVjr算法和Cluster-Tree算法相结合的ZBR路由算法，该算法既具有AODVjr的路由寻优的能力，又具有Cluster．Tree算法的无初始延迟的优点。通过仿真表明，改进的算法能够较好的达到设计要求，具备了实现的可行性。本文最后利用改进的组网方案和ZBR路由算法，首先利用NS2软件对一个完整的Zigbee网络的组网过程进行仿真，然后在Jennie5139开发板上实现了一个简单的网状网络，并对该网络做了相关的测试。关键词组网方案，AODVjr，ZBR，NS2仿真，JN5139ABSTRACTZigBeeisanewwirelesscommunicationtechnology，focusesonthefiledsoflOW—cost，low—powerconsumption，shortdistance，andespeciallyfortheLow—RateWirelessPersonalAreaNetwork(LR．WPAN)．itwidelyuseinmilitary、industryandintelligencehomeetc．However,duetolateemergenceofZigBeetechnology,thespecificationandapplicationisstillcontinuousimprovinganddeveloping．TheP印erresearchesandsimulatestheMeshnetworkestablishmentprogramundertheZigbeeProtocol，andthenproposesanimprovementprogram．Bysimplifyingtheprocessandreducingthecoordinatortojoinonthenodesprocessingtime．Thesimulationfoundthattheimprovedprogramcaneffectivelyreducethedelayandavoidconflict．AgainsttheAODValgorithmfortheinadequacyofthehi曲controloverhead，SOhereproposesallimprovementroutingalgorithm，namedAODVjr．TheAODVjralgorithmbasesonthefastestpathroutingbysimplifyingtheroutingdiscoveryandroutingtable，deletetheHellomessageinordertoachievethepurposeofreducingcontroloverhcad．TofurtherachievethelOWcontroloverhcad，thepaperusestheZBRroutingalgorithmwhichcombinatestheAODVjralgorithmandCluster-Tkealgorithm．TheZBRisacompromiseofthetwoalgorithms，notonlyhastheabilityofroutingoptimizationoftheAODVjr,butalsotheadvantageoftheCluster-Treesuchassimpleandnoinitialdelay．ThesimulationshowsthattheimprovedalgorithmCanbettermeetthedesignrequirements，withthefeasibilityofachieving．11l，the，theP印erPapersimulate：simulatesacomoletelpleteZigbeeZigbeenetworkorocessbasedont