The Internet of Things (IoT) is an emerging\nnetwork paradigm, and realizes the interconnection among\nubiquitous things, along with its corresponding applications\nand services in both Physical-world and Cyber-world. Some\nresearches have been worked on IoT modeling and addressing,\nwhich are mainly based on objects with a unique identifier\n(ID). However, in practical scenarios, there are several\nobjects without any available ID, namely non-ID (i.e.,\nnID) physical objects, including the objects unattached any\nID itself, and the objects attached unreadable or un-trusted\nID. It turns out that the nID physical objects related issues\nbecome noteworthy. In this paper, we focus on the nID physical\nobjects to present a modeling and addressing solution.\nConcretely, (1) nID physical objects are described along with\nthe discussion of applying nID solution; (2) a tree-like code\nstructure (i.e., Tree-Code) is introduced to establish a unified\nmodeling scheme for the nID physical objects according\nto abstracted data elements, and also achieves the compatibility\nwith the ID physical objects considering the ID based\ndata elements; (3) Tree-Code based addressing scheme is presented with dynamic updating considerations. It indicates\nthat the nID physical object modeling and addressing provide\ncomplements to the ID physical objects for ubiquitous interactions\nin the IoT.
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