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| Title | A Uav-Assisted Multi-Task Allocation Method For Mobile Crowd Sensing |
|---|---|
| ID_Doc | 5697 |
| Authors | Gao H.; Feng J.; Xiao Y.; Zhang B.; Wang W. |
| Year | 2023 |
| Published | IEEE Transactions on Mobile Computing, 22, 7 |
| DOI | http://dx.doi.org/10.1109/TMC.2022.3147871 |
| Abstract | Mobile crowd sensing (MCS) with human participants has been proposed as an efficient way of collecting data for smart cities applications. However, there often exist situations where humans are not able or reluctant to reach the target areas, due to for example traffic jams or bad road conditions. One solution is to complement manual data collection with autonomous data collection using unmanned aerial vehicles (UAVs) equipped with various sensors. In this paper, we focus on the scenarios of UAV-assisted MCS and propose a task allocation method, called “UMA” (UAV-assisted Multi-task Allocation method) to optimize the sensing coverage and data quality. The method incentivizes human participants to contribute sensing data from nearby points of interest (PoIs), with a limited budget. Meanwhile, the method jointly considers the optimization of task assignment and trajectory scheduling. It schedules the trajectories of UAVs, considering the locations of human participants, other UAVs and PoIs which are rarely visited by human participants. In detail, UAVs take care of two tasks in our proposal. One is to calibrate the data collected by the human participants whom the UAVs come across along their trajectories. The other is to collect data from the PoIs which are not covered by other UAVs or human participants. We apply deep reinforcement learning to schedule UAVs moving trajectories and sensing activities in order to minimize the overall energy cost. We evaluate the proposed scheme via simulation using two real data sets. The results show that our proposal outperforms the compared methods, in terms of coverage completed ratio, calibrating ratio, energy efficiency, and task fairness. © 2022 IEEE. |
| Author Keywords | Mobile crowd sensing; multi-task allocation; reinforcement learning; UAV |
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