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ID:36470264
大小:1.77 MB
页数:54页
时间:2019-05-11
《IEEE802154仿真研究与性能分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、华中科技大学硕士学位论文IEEE802.15.4仿真研究与性能分析姓名:胡科路申请学位级别:硕士专业:通信与信息系统指导教师:黄本雄20060428AbstractWirelesspersonalareanetwork(WPAN)technologyaimsatshort-rangewirelesscommunication.Variousstandardsareusedindifferentsituations.IEEE802.15.4standardisoneofthemwhichisalow-rateandlow-powerWPANstandardandcanbeappli
2、edinthefieldofinteractivetoys,industrialautomationandcommercialapplication.ByanalyzingtheIEEE802.15.4standard,itisfoundthatCSMA/CAandhidden/exposedterminalproblemseffecttheperformanceofIEEE802.15.4.Ofthemanyparametersconcerningwithperformancestudy,Packetdeliveryratio,onehopdelayandpacketcolli
3、sionparametersareadoptedhere.Besidessimulation,mathematicalmodelsareusedtoanalyzeback-offtimeandaveragetransmissiontime.AccordingtotheIEEE802.15.4standard,theimplementofIEEE802.15.4modelinNS2isdiscussedintheaspectsofphysicallayer,mediaaccesslayer,networkdeviceandsimulationmodelsinwirelesscomm
4、unication.AndsuggestionsaregiventhatGTSpartshouldbeaddedtothemodel.Specificmodelsarechosenaccordingtoourresearch.TworaygroundmodelisusedaspropagationmodelandtheGEerrormodelisusedforchannels.Devicetocoordinatortransmission,coordinatortodevicetransmissionandpeertopeertransmissionanddirectdatatr
5、ansmissionareused.Allnodessendtheirpacketsbypoissonprocess.Afterthesimulationscenariosarebuiltandparametersaresetthreestudiesaremade.Thestudyofhidden/exposedterminalprobleminIEEE802.15.4networkshowsthatthehidden/exposedterminalproblemdoesnotaffectalotontheperformanceofaIEEE802.15.4networkrunn
6、inginalowrate.Thestudyoftheeffectofbeaconmodeonnetworkperformanceshowsthatwithastartopologynetworkperformanceisnotaffectedbybeaconandnon-beaconmode.Thestudyeffectofackframeonnetworkperformanceshowsthatinstar-netwithalowratetheperformanceisnotaffectedbytheackmechanism.Keywords:WPAN;IEEE802.15.
7、4;NS2Simulation;performanceII本人声明所呈交的学位论文是我个人在导师指导下进行的研究工作及取得的研究成果。尽我所知,除文中已经标明引用的内容外,本论文不包含任何其他个人或集体已经发表或撰写过的研究成果。对本文的研究做出贡献的个人和集体,均已在文中以明确方式标明。本人完全意识到本声明的法律结果由本人承担。学位论文作者签名:日期:年月日学位论文版权使用授权书本学位论文作者完全了解学校有关保留、使用学位论文的规定,即:学校有权保留并向国家有关部门或机构送交论
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