Wireless Sensor Networks 13th China Conference, CWSN 2019, Chongqing, China, October 12-14, 2019, Revised Selected Papers - Guo, Songtao; Guo, Songtao; Liu, Kai; Liu, Kai; Chen, Chao; Chen, Chao; Huang, Hongyu; Huang, Hongyu (Springer Singapore : Imprint: Springer, 2019)