Table 3: Requirements of emergency CRAHNs.

Requirement parameter Met by the following design feature Accuracy Network utility function Resource efficiency (energy consumed or bandwidth overhead) Network utility function Variation in number of SUs Adaptation Variation in SNR Adaptation Optimal number of sensing SUs in each time epoch Self-learning based or estimation [23] Fairness with respect to energy consumption All SUs sense with the same probability Low latency Proactive periodic quiet period sensing Byzantine attack immunity LLRT-based data fusion [30]