Abstract: The concept and architecture of the Internet of Things (IoT) were introduced. Key characteristics and technologies, which included the ubiquity of the IoT, intelligent identification and sensing technologies, uncertainty of data, representation methods of data, information propagation towards massive data, security and privacy were discussed in detail, and related open issues were presented. Based on the future ubiquitous applications, the research directions of the IoT were put forward.

Key words: Internet of Things (IoT), ubiquitous network, architecture, key technology, intelligent technology

摘要： 针对物联网概念、关键特征、体系结构及核心技术进行研究。在关键特征与核心技术方面，深入研究并讨论了物联网的泛在性、特定环境下的智能标识与感知技术、数据的不确定性、数据表示方法、海量数据的信息传播、安全和隐私等问题，并给出了开放性的研究内容。针对未来物联网应用的泛在性，进一步提出了物联网的研究发展方向。

关键词: 物联网, 泛在网络, 体系结构, 核心技术, 智能技术