Impact of number of devices and data rate variation in clustering method on device-to-device communication

Clustering and cooperative clustering method in D2D communication, a promising technology for 4G and 5G communication, will decrease energy consumption in mobile communication. The novelty of this work is we analyzed the impact of variation in number of mobile terminals in one cell, data transfer rate, and number of cluster members in one cluster for energy consumption. Clustering and cooperative clustering method, which are two sophisticated methods for D2D communication, are expected to make D2D communication more efficient in energy consumption. Energy efficiency of devices was examined through several simulations. The first simulation, we studied the impact of different number of mobile terminals per cell for energy efficiency. The result shows that cells with a greater number of mobile terminals has higher mobile consumption. Furthermore, compared with other cells, a cell with cooperative clustering method has less energy consumption. Secondly, we also examined the impact of different data transfer rate for devices energy consumption. The result shows that energy consumption rate is decreasing exponentially along with the increment of data transfer rate. Finally, we investigated the impact of different number of cluster members per cluster. The result informs that in the scenario with clustering method, the variation in the number of MT per cluster relatively did not affect energy consumption. However, in the scenario with cooperative clustering method, each one increment of number of mobile terminals per cluster increase energy consumption approximately by 25%.