Abstract:

The name resolution services of the ONS for the internet of things, there are many problems. The improved single／multi-layer DHT resolution system has resolved the load balancing problem of the ONS, but it failed to consider the actual distance of nodes when building a logical network, leading to the return efficiency of the parsed data is reduced. To solve this problem, this paper proposes to establish a novel resolution service for internet of things based on physically topological DHT. It is adopting the design idea of the good combination of DHT logical network and physical network to resolve the vast majority of information locally. It also ensures the much faster return efficient of the parsed data. Reference current status of the internet, we analysis and evaluate the PTDHT-RS. The results show that the whole query and analytical efficiency of this system is superior to the existing single／multi-layer DHT analytical system. From the deployment point of view, PTDHT-RS only use the existing storage technologies and about 1／10 the number of the ONS node to handle about 10¹⁵object identities of information. So the PTDHT-RS able to meet the expected demand of the worldwide naming resolution service of the internet of things.

Key words: IoT, ONS, EPC, DHT, PTDHT-RS