随着物联网规模的不断扩大,网络中节点的数量也不断增加,因而数据的接入量剧增,造成了数据接入控制中的拥塞问题,导致数据包的实际丢包率随之上升,同时由于缺乏数据接入的优先级机制,使得部分重要数据无法及时更新.针对以上问题,基于层次分析法提出了一种设备属性优先级模型.该模型通过相应的准则构建比较矩阵,然后进一步具体量化每个属性所占的权值,得出对应的优先级顺序,并在智能家居场景下给出了属性优先级的具体求解方法,得到各属性的具体优先级等级.最后将其应用于物联网数据接入控制中,实验结果表明,该方法能够按照优先级顺序接收和处理数据包,缓解了大量数据接入时的拥塞问题,同时使得重要数据能及时进行更新.%With the expansion of Internet of Things,the number of nodes in the network is also increasing.Thus,the amount of data access is dramatically increased,which brings about the congestion in the process of data access and control and also increases the actual packet loss rate.At the same time,part of the important data cannot be timely updated due to lack of data access priority mechanism.To solve the above problems,we propose a model of device attribute priority based on analytic hierarchy process.It constructs the comparison matrix according to the corresponding criteria,and specifically quantifies the weight of each attribute.Then,the corresponding priority order can be obtained.The specific solution method of the priority of attributes in the smart home scene is given.Finally,the model is applied in the data access control of IoT.The experiments show that the data packets can be received and processed in priority order,which alleviates the congestion when large quantities of data are accessed,and also keeps important data being updated in time.
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