Data Collection Method of Space-Based Internet of Things Based on Improved Double Level Distributed LT Code

doi:10.13190/j.jbupt.2020-148

Journal of Beijing University of Posts and Telecommunications ›› 2020, Vol. 43 ›› Issue (6): 118-125.doi: 10.13190/j.jbupt.2020-148

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Data Collection Method of Space-Based Internet of Things Based on Improved Double Level Distributed LT Code

HE Jian-hua¹, ZHAO Hui², XU Xiao-bin², YAN Lei³, WANG Shang-guang⁴

1. Electric Information Department, Technology and Engineering Center for Space Utilization(Chinese Academy of Sciences), Beijing 100094, China;
2. Beijing Advanced Innovation Center for Future Network Technology, Beijing University of Technology, Beijing 100124, China;
3. Key Laboratory of Space Utilization, Chinese Academy of Sciences, Beijing 100094, China;
4. The State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2020-08-28 Online:2020-12-28 Published:2020-11-30

Abstract

Abstract: 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.

Key words: the sixth generation of mobile communications system, space-based internet of things, data collection, network coding

CLC Number:

TN929.53

HE Jian-hua, ZHAO Hui, XU Xiao-bin, YAN Lei, WANG Shang-guang. Data Collection Method of Space-Based Internet of Things Based on Improved Double Level Distributed LT Code[J]. Journal of Beijing University of Posts and Telecommunications, 2020, 43(6): 118-125.

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Data Collection Method of Space-Based Internet of Things Based on Improved Double Level Distributed LT Code

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