Abstract
In order to reduce the traffic of networks and servers in the IoT, types of the fog computing (FC) models are proposed, which are composed of fog nodes which support application processes to calculate output data on sensor data and forward the output data to servers. A topic-based PS (publish/subscribe) model is a new contents-aware, event-driven model of a distributed system. A process publishes a message whose contents are denoted by publication topics. A process specifies subscription topics and only receives messages whose publication topics are the subscription topics. In this paper, we newly propose an MPSFC (Mobile PS (publish/subscribe) Fog Computing) model where fog nodes like vehicles are interconnected. Suppose a fog node \(f_1\) has data d to send. If a fog node \(f_2\) is in the communication range of the fog node \(f_1\), the fog node \(f_1\) can send a message carrying the data d to the fog node \(f_2\). The fog node \(f_2\) receives the message if there is some publication topic of the message in the subscription topic of the node \(f_2\).
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