%0 Journal Article
%A WANG Shang-guang
%A XU Xiao-bin
%A YAN Lei
%A ZHAO Hui
%A HE Jian-hua
%T Data Collection Method of Space-Based Internet of Things Based on Improved Double Level Distributed LT Code
%D 2020
%R 10.13190/j.jbupt.2020-148
%J Journal of Beijing University of Posts and Telecommunications
%P 118-125
%V 43
%N 6
%X Satellite networks and unmanned aerial vehicles (UAVs) are introduced into Internet of things, which provides a typical application for the sixth generation of mobile communication system(6G). Data transmission methods for each layer in the space-based Internet of things are analyzed, and one new data collection strategy is proposed. Combining the advantages of current network coding and multi-layer distributed LT codes, a data collection strategy based on improved double-layer LT codes is proposed. This strategy adopts adaptive block coding mechanism to avoid data loss caused by multi-path crossover. Simulation results show that this strategy can effectively improve the success rate and throughput of data transmission when the network connection is unstable.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2020-148