IVDQP—物联网内基于兴趣向量的分布式查询处理方法

摘要

物联网内资源按需检索是构建高效率物联网应用的必备功能.实现一种基于兴趣的数据单播查询处理方法IVDQP,采用一种单播的方式对任意物联网节点提出的数据检索请求进行节点间传递,并以一种累积的方式将中间节点上的检索结果按照查询单播传递路径返回给查询节点.与Flooding算法的对比实验表明,提出的这种物联网内单播查询处理方法不仅能够迅速定位尽可能多的符合查询要求的数据,而且能够保证引入尽可能少的节点间的消息交换,从而为高效物联网应用的实现提供技术支持.%Resource retrieval on demand in loT is an essential function to construct efficient IoT applications. The paper implements an interest-based data unicast query processing method called IVDQP. The method adopts a unicast method to relay among nodes data retrieval requests required by any IoT node. Moreover it returns the retrieval results from the middle nodes back to the query nodes in an accumulative manner according to querying unicast relay paths. Comparative experiments against Flooding algorithm demonstrate that the proposed unicast query processing method for IoT can not only quickly locate as many requested resources as possible but also cause as few information exchanges among nodes as possible, so that it can provide technical supports for the realization of efficient IoT applications.