Zhang S , Zhang H , Song L , et al. Sensing and Communication Tradeoff Design for AoI Minimization in a Cellular Internet of UAVs[J]. 2020.
https://arxiv.org/pdf/2002.00146.pdf
系统描述
时隙划分
sensing probability
transmission 
新概念：AOI
To quantify the “freshness” of the data at the BS, we bring in the concept of the age of information (AoI).
In most of the applications in the cellular Internet of UAVs, the sensory data changes rapidly [2], [3]. Therefore, UAVs have to maintain the “freshness” of the sensory data at the BS by frequent data sensing and data transmission. To measure the performance of data freshness at the BS, we bring in a new metric, i.e., Age of Information (AoI),
In this network, the sensory data of each task varies with time, and the validity of the data is significantly related to the timeliness of sensing and transmission. Therefore, we introduce the concept of AoI that describes the freshness of the received data at the BS, to measure the performance of the system.
参考文献
Yang Y , Zheng Z , Bian K , et al. Realtime Profiling of Fine-Grained Air Quality Index Distribution using UAV Sensing[J]. IEEE Internet of Things Journal, 2017, PP(99):1-1.
https://arxiv.org/pdf/1711.02821.pdf