D2D for energy efficient communications in disaster and emergency situations

We present a novel, D2D based messaging solution to overcome the UE power limitation problems faced by cellular RATs (GSM, UMTS, LTE) in disaster and emergency situations. Through simulations comparing the direct messaging and the proposed messaging schemes, we highlight the possible power savings for the UEs in need of emergency assistance. We utilize a simple energy consumption model for our evaluations, extracted from published measurement results.