| Abstract |
The CIoT project focuses on addressing the concept of Collaborative IoT in collecting sensor data. The first part of this study is using heterogenous sensor and sense the environment. Classically sensing the environment is done using a typical Wireless sensor network WSN where the monitoring is done by fixed sensor nodes and they send their data to a fixed gateway. One of the sending data techniques is broadcasting, the sensor node sends its data to its neighbors and they send it again and again to be delivered to the fixed gateway then backend server to be manipulated or processing. This technique has disadvantages like consuming resources and power and can be solved by CIoT networking. The CIoT topology is a WSN with opportunistic gateways; the opportunistic WSN gateway device can be implemented using any general purpose and widely used device with WSN compatible communication interface(s) and suitable communication interfaces towards the remote server. Smartphones will serve as a communication connection between different sensors nodes, expanding the network's potential size since nodes no longer need to be in communication range of one another. What are the pros and cons of using smartphones for environmental sensing? This study aims to answer these concerns by addressing the research issue, “How can smartphones be used as opportunistic gateways in WSN, and what obstacles must be overcome?”
We will depend on the existence of real sensor nodes, as well as the backend. The smartphones will be emulated by desktop application run by a laptop utilizing BLE peripheral since large number of smartphones can’t be used in development phase. Bluetooth Low Energy is used for communication with sensor nodes, while cellular network and WIFI network are used for communication between smartphones and the backend server. At backend, the sensor nodes data besides some information from the smartphone itself, like GPS where data was collected, can be used to localize the sensor node.
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