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A Study Analysis of IEEE 802.15.4 Zigbee based WSN in Campus

In this paper, we are analysing the use of Zigbee WSN in domestic applications, here in our case, it is smart campus. This smart campus consists of multiple offices, which are designed in such a way that each office has several sensors, assigned for various environmental factors. The sensor nodes are represented by the Zigbee end device and the master node is represented by the Zigbee coordinator. The data traffic is sent from the end nodes towards the master node or the coordinator, which takes, all the values from sensor nodes as input. The Opnet modeler v17.5 was used for the simulations and study. Our paper analyses, in terms of delay, throughput, load, data traffic received, data traffic sent and data dropped, the WSN performance. Four variations in design were studied according to the number of nodes, rooms, sensor nodes. The study concluded that multiple coordinators (or nodes) reduced the delay in the transmission, while with one coordinator, larger delays are observed. Similarly, others parameters are affected by the number of nodes.