物联网体系结构模型与互连机理
摘要
Networks have greatly changed people's production and life through the information sharing. Inter-net of Things(IoT) is an extension of the networks to the physical space. By sensing and controlling the physical environment, IoT enhances our ability of understanding and changing the world. This paper proposes the func-tional model of IoT architecture with four hierarchical levels, including object sensing and controlling layer, data communication layer, information integration layer, service application layer. Then we present the object-oriented description of the architecture model and the main entities of each layer. For the internet working issue, which is the core problem of the IoT architecture, we propose an internetworking model supporting the coexistence of the strong and weak network elements. We present the internet working mechanism between the strong and weak network elements based on the ability mapping and task transfer. We verify our proposed internetworking model and mechanism through the prototype.