The study of coverage problem in uncertain WSN environment requires the consideration of this uncertainty by taking the best possible decisions, since it is impossible to explicitly represent all the combinatorics to produce a conditional active/passive state nodes' planning in the area of interest, and allow reasoning on various environmental states of the partially known physical world. This paper addresses the problem of area coverage based on the Dempster-Shafer theory. The authors aim to ensure the full area coverage while using a subset of connected nodes, with minimal costs using a minimal number of dominant nodes regardless of the type of used deployment (random or deterministic). This is ensured by activating a single node in each subset of each geographic sub-area, thus extending the lifetime of the wireless sensor network to its maximum. The comparison of the proposed model denoted evidential approach for area coverage (EAAC) with two well-known protocols and with a recent one showed a better performance and a slight improvement in the covered area.

The combination of 6G technology and drones represents a major achievement in enhancing the use of unmanned aerial vehicles (UAVs). This article investigates how 6G can revolutionize communication and security systems for drones in various sectors such as disaster management, surveillance, logistics, and infrastructure monitoring. 6Gpowered drones improve processing data in real-time, secure communication, and autonomous decision-making abilities by utilizing advanced technologies like terahertz communication, blockchain, AI-driven threat detection, and federated learning. The research also examines the urgent cybersecurity issues linked to drone networks, like denial-of-service attacks, unauthorized entry, and data breaches, by suggesting complex structures and cutting-edge machine-learning methods for dealing with threats. This research showcases the extensive capabilities of drone systems enabled by 6G, while also pointing out important constraints in scalability, energy efficiency, and standardization, offering a guide for further investigation. The results highlight the crucial impact of 6G on transforming UAV operations, and creating secure, robust, and flexible networks for civilian and military uses.