任务紧急程度约束下的物联网资源优先级卸载方法

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中图分类号：TN929-34 文献标识码：A 文章编号：1004-373X（2025）20-0155-05

Abstract：TheunloadingtaskofresourcesintheInternetof Things（IoT）hascharacteristicssuchasperiodicityandnonintermitencyandalsorequireshighlatency.InordertoensurethetimelinessofITresourceunloading，amethodofpriority unloadingforIoTresouresundertheconstraintof taskurgencyisproposed.Basedonthedelayconstraintsthatmeediferent tasks，theminimumtimeaveragetotalcostofunloadingofIoTresourcesistakenastheobjectivefunction，andtheagreed conditiosoftheobjectivefunctionaresetfromtheperspectivesofunloadingdecisionvariables，computingresourcealocation， transmisionpoweralocationandtolerabledelay.Theobjectivefunctionissolvedbymeansofthre-stageoptimizationalgorit， andthestableconvergencesolutionof theobjectivefunctionisobtained bymeansofmultipleiterativeprocesss.Inthefirst stage，theparticleswarmoptimizationalgorithmisusedtooptimizetheunloadingdecisionandresourcealocationstrategyIn thesecondstage，thetaskschedulingisoptimizedbasedonthedegreeoftaskprogressInthethirdstage，theresultsare optimizedbasedonresourceallcationstrategy，andthetransmissonpoweroptimizationsolutioniscariedoutonthebasisof metingthedelayrequirements.Theexperimentalresultsshowthat theproposedmethod isbeterthanthecomparisonmethod in termsof overallenergyconsumptionandtask shedulingtimeconsumptionintheprocessof resourceunloading，andithastrong applicabilitytoresearchobjectswith high loads.

Keywords：taskurgencylevel;Internetof Thingsresource；priorityofloading；delayconstraint;three-stageoptimization algorithm; resource offloading task energy consumption

0 引言

物联网系统通常由大量分布在不同地理位置的传感器、执行器、智能设备等组成1，这些设备通过无线网络相互连接，形成庞大的网络体系，再经数据交换和智能处理，为各种应用场景提供实时准确的信息支持。（剩余5936字）