Energy-efficient time and energy resource allocation in non-selfish symbiotic cognitive relaying sensor network with privacy preserving for smart city

Abstract Energy efficiency and privacy preserving have become essential for the wireless sensor networks. In this paper, a joint energy time resource allocation problem cognitive users (CUs) in non-selfish symbiotic relaying scheme (NSCRS) is considered. We aim to maximize total (EE) of primary user CUs with consideration information under constraints CUs. With full channel state (CSI), an optimal algorithm proposed based on exhaustive searching. Besides, order reduce overhead CSI feedback, suboptimal algorithm, which only partial instantaneous required, additionally proposed. Simulation results demonstrate EE NSCRS can be greatly improved by algorithms.