Energy efficient device-to-device clustering method in wireless communication network

This paper focuses on D2D clustering communication method in the uplink and downlink aiming at saving energy of Mobile Terminals (MTs). The method contains MTs clustering method and cluster head selection methods. The MTs clustering method is based on the distance information of MTs. The cluster head selection method is based on the energy consumption or the residual energy of MTs. And Quality of Service (QoS) is also taken into consideration and evaluated in the simulation. Simulation results verify that compared with non-collaborative case, the proposed methods can save energy by approximately 70% and 48% in the uplink and downlink respectively. Additionally, compared with cluster head selection method based on energy consumption, the method based on MTs residual energy can significantly decrease the number of MTs out of charge during the initial and middle period of the D2D clustering communication.