An integrating data gathering scheme for wireless sensor networks

Direct reporting, partial nodes selection and compressive sensing are three common types of data gathering in wireless sensor networks. Integrating the above three techniques together for a better performance has been paid many attentions. Hybrid-CS is an effective way to save energy for data gathering, which adopts direct reporting method instead of compressive sensing in the area near the leaf nodes. This paper presents a higher-level hybrid scheme that integrates partial nodes selection into compressive sensing by using a threshold, so as to extend the area before compressive sensing. For this idea, we give a completed theoretical analysis of the relationship between energy consumption and different parameters settings, then we present the influence of different parameters acting on network performance under three general scenarios. At last, we run extensive simulations on the real data trace of Citysee system and the results show that the proposed integrating scheme can realize the purpose of network performance optimization.