Communication links can use different protocols and numerous interaction tactics, as proven in Determine two. On the whole, you will discover a few sorts of backlinks in UAV-assisted WSNs which include sensors to cluster heads, UAVs to ground stations, and UAVs to UAVs, as shown in Desk 1. This provides distinct technologies and demonstrates They're used at Each individual level of architecture.
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UAVs obtain data from static sensors: In this architecture, UAVs collect data from static sensor nodes on the bottom. In [forty three], sensing data from sensors are instantly despatched to UAVs. A trusted conversation protocol is proposed to maximize the number of sensors that could transmit data at a single time. The authors in [53] exploit a various-UAVs technique to collect data from sensors. An algorithm known as IBA-IP (Iterative Well balanced Assignment with Integer Programming) is proposed to find out optimum Original positions for UAVs and sensor assignment to UAVs.
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Constant Velocity UAV (CSU): In this type, between clusters and sensor nodes, UAVs will go at a hard and fast velocity. Once the UAV is throughout the coverage of the cluster, it starts the data collection method. When there is missing data from the RN’s buffer, these data need to hold out until finally another cycle on the UAV.
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