scholarly journals An Event-Based Stack For Data Transmission Through Underwater Multimodal Networks

2021 ◽  
Author(s):  
Roberto Francescon ◽  
Filippo Campagnaro ◽  
Emanuele Coccolo ◽  
Alberto Signori ◽  
Federico Guerra ◽  
...  
Keyword(s):  
Data Transmission ◽  
Multimodal Networks ◽  
Event Based

scholarly journals An Event-based Middleware for Syntactical Interoperability in Internet of Things

2018 ◽  
Vol 8 (5) ◽  
pp. 3784 ◽  
Author(s):  
Eko Sakti Pramukantoro ◽  
Husnul Anwari
Keyword(s):  
Internet Of Things ◽  
Success Rate ◽  
Data Transmission ◽  
Web Application ◽  
Loss Rate ◽  
Packet Loss Rate ◽  
Assessment Methodology ◽  
Humidity Sensors ◽  
Average Delay ◽  
Event Based

Internet of Things (IoT) connecting sensors or devices that record physical observations of the environment and a variety of applications or other Internet services. Along with the increasing number and diversity of devices connected, there arises a problem called interoperability. One type of interoperability is syntactical interoperability, where the IoT should be able to connect all devices through various data protocols. Based on this problem, we proposed a middleware that capable of supporting interoperability by providing a multi-protocol gateway between COAP, MQTT, and WebSocket. This middleware is developed using event-based architecture by implementing publish-subscribe pattern. We also developed a system to test the performance of middleware in terms of success rate and delay delivery of data. The system consists of temperature and humidity sensors using COAP and MQTT as a publisher and web application using WebSocket as a subscriber. The results for data transmission, either from sensors or MQTT COAP has a success rate above 90%, the average delay delivery of data from sensors COAP and MQTT below 1 second, for packet loss rate varied between 0% - 25%. The interoperability testing has been done using Interoperability assessment methodology and found out that ours is qualified.

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