Wireless power transfer supported device-to-device multicast energy cooperative transmission scheme

The cluster heads (CHs) will face the contradiction between lack of available energy and demand high consumption in harvesting-supported device-to-device multicast communications (EH-D2MD). Wireless power transfer (WPT) technology is a possible way to address above contradiction. members (D2D) can part their CH by WPT jointly undertake contents unloading. As result, transmission robustness be improved. Therefore, scheme with cooperation (EC) designed on premise cellular spectrum reusing. EC designs elaborately harvesting, data reusing process. To realize scheme, this work maximize rate give joint optimal solution multi-domain resources including resource allocation, cooperative time factor planning, control. maximization problem typical non-convex mixed integer non-linear programming (non-convex MINLP) problem. investigate performance EH-D2MD communication scenario, convex approximate lower-bound algorithm proposed, which into MINLP solution. Simulation results show that proposed obtains comparison exhausted searching method. Furthermore, compared without cooperation, established increase D2MD more than 45% enhance EH-D2MD.