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Spectrum sensing and spectrum sharing are two fundamental issues in a cognitive radio network (CRN). The spectrum sensing data falsification (SSDF) attack imposes bad effects on both spectrum sensing and spectrum sharing. To deal with SSDF attacks and to incentivize secondary users (SUs) to behave well, a joint spectrum sensing and resource allocation (JSSRA) scheme in a CRN is proposed in this paper...
This paper addresses the polytype target coverage problem for heterogeneous wireless sensor networks (HWSNs) with clustered configurations. This problem is formulated as an integer programming (IP) problem for maximizing the whole lifetime of HWSNs. We present an energy-efficient target coverage algorithm (ETCA) to solve this problem and balance the energy consumption of sensor nodes. Each sensor...
The target coverage problem is one of the most fundamental challenges in wireless sensor networks. Due to the complexity of the problem (time-dependent network topology and coverage constraints), previous studies have mainly focused on heuristic algorithms and the theoretical bound remains unknown. In this paper, we aim to fill in this gap by providing fundamental results. First, we investigate the...
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