Research on Coupling Reliability Problem in Sensor-Cloud System

Abstract

With the integration of WSNs and cloud computing, sensor-cloud system becomes popular in many fields where the physical nodes can be shared with multiple users. However, when a physical sensor node receives multiple service commands simultaneously, there are some service collisions, namely, coupling problem. This coupling problem leads to the failure of services. It is necessary to solve this problem, thus the reliability of system can be improved. In this paper, we propose a fog-based model and extend the classical Hungarian algorithm. The fog layer acts as a buffer and controller between the wireless sensor networks layer and the cloud layer in this model, where we use the classical Hungarian algorithm in the first matching and then schedule idle resources to achieve optimal matching. Experimental results and theoretical analysis show that our method can efficiently solve the coupling problem and increase the resource utilization and resource reliability.