Intelligent UAV Based Flexible 5G Emergency Networks: Field Trial and System Level Results. - Yuan Gao 003; Jiang Cao; Ping Wang; Junsong Yin; Ming He; Ming Zhao; Mugen Peng; Su Hu; Yunchuan Sun; Jing Wang; Shaochi Cheng; Yang Guo; et al. (INFOCOM Workshops, 2020)