Gateways Selection for Integrating Wireless Sensor Networks into the Internet of Things

What is it about?

This paper presents an approach to integrate Wireless Sensor Networks into the Internet. In WSN some sensors have two radio components: Zigbee radio which used on all sensors to send data to the WSN and WiMax radio which activated only on the subset of sensors, indicated to as gateways, for sending data to the Internet. The objective of our approach is to increase lifetime and throughput of WSN where sensors can join the Internet through the gateway, to achieve this goal, we use link cost to select the gateway. The link cost is the ratio between distance to Internet and energy level of the sensor. The sensor has been selected as the gateway which has minimum link cost. To ensure minimum link cost can be performed, we divided WSN into grids where gateways have been selected in each grid. Results justify its accuracy.

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Why is it important?

Integration of WSNs into IoT is a key component in IoT application systems. In this paper, we proposed a novel approach which used the link cost to select appropriate gateway to integrate WSNs into IoT. Sensors with the minimum value of link cost are selected as a gateway, and other sensors become the normal sensors of that gateway and transmit their sensed data to a gateway which forwards them to the user through the Internet. In order to enhance the energy efficiency and throughput of WSNs-IoT, we divided WSNs into grids. This grids technique encourages the better distribution of gateways in the network. Simulation results demonstrated that our routing approach achieves better performance metrics using sensor density and size of sensing data.

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