Abstract
Through the latest technological and conceptual developments, the centralized cloud-computing approach has moved to structures such as edge, fog, and the Internet of Things (IoT), approaching end users. As mobile network operators (MNOs) implement the new 5G standards, enterprise computing function shifts to the edge. In parallel to interconnection topics, there is the issue of global impact over the environment. The idea is to develop IoT devices to eliminate the greenhouse effect of current applications. Radio-frequency identification (RFID) is the technology that has this potential, and it can be used in applications ranging from identifying a person to granting access in a building. Past studies have focused on how to improve RFID communication or to achieve maximal throughput. However, for many applications, system latency and availability are critical aspects. This paper examines, through stochastic Petri nets (SPNs), the availability, dependability, and latency of an object-identification system that uses RFID tags. Through the performed analysis, the optimal balance between latency and throughput was identified. Analyzing multiple communication scenarios revealed the availability of such a system when deployed at the edge layer.
Highlights
Wi-Fi, multiple Radio-frequency identification (RFID) reader: In this scenario, there was a single microcontroller with Wi-Fi capabilities that acted as an intermediate point between the Pepper robot and RFID readers (Figure 13)
The first type of analysis performed over the presented models showed the relationship between the number of frames that might be needed to identify the RFID tags versus the number of tags in the system
There are situations where, for the same number of tags near the RFID reader, a smaller number of frames have the same probability of occurrence as that of scenarios characterized by a higher number of frames (Figure 18)
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. RFID can be very useful in monitoring the type of drug that was taken by placing RFID tags on medicine bottles [5,6,15], helping to increase confidence in the obtained identification results Another advantage of RFID technology is the ease with which it can integrate into the cloud–fog–edge architecture. Through the cloud–fog–edge architecture, the object-identification process can be shared, such that advanced image processing can be performed in the cloud or fog layer, while RFID-based object detection is performed at the edge layer The advantage of such a system allows for real-time location data, while more complex context-related information resulting from cloud-layer processing is provided later. Analyses are carried out on the probability of obtaining a certain cost
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