SEC²: a secure and energy efficient barrier coverage scheduling for WSN-based IoT applications

Barrier coverage scheduling is an energy conservation scheme in which a subset of sensor nodes with overlapped sensing area (also called barrier) is activated to meet the key Quality of Service (QoS) requirements such as energy-efficiency, coverage, and connectivity. However, sudden and unexpected node failures in a barrier due to security attacks such as Denial of Service (DoS) poses a challenge for maintaining the desired QoS levels. In this paper, we propose a secure barrier coverage scheduling scheme called SEC² , which prevents QoS degradation in the event of security breaches. This scheme uses a fully weighted attributed dynamic graph model in which a novel attribute-based weight balancing greedy strategy is used to construct barriers. A weighted averaging-based K-means Spectral, and Hierarchical (WKSH) cluster ensemble scheme is proposed to secure a barrier from malicious attacks. WKSH is a graph-based anomaly detection scheme based on weighted Euclidean distance computation and weighted average consensus. The experimental result shows that SEC² guarantees the required QoS at all times. Moreover, the proposed WKSH shows better accuracy in the classification and detection of attacks in the barrier.