基于改进双层LT码的天基物联网数据收集方法

doi:10.13190/j.jbupt.2020-148

北京邮电大学学报 ›› 2020, Vol. 43 ›› Issue (6): 118-125.doi: 10.13190/j.jbupt.2020-148

基于改进双层LT码的天基物联网数据收集方法

何建华¹, 赵辉², 徐晓斌², 闫蕾³, 王尚广⁴

1. 中国科学院空间应用工程与技术中心电子信息技术研究室, 北京 100094;
2. 北京工业大学北京未来网络科技高精尖创新中心, 北京 100124;
3. 中国科学院太空应用重点实验室, 北京 100094;
4. 北京邮电大学网络与交换技术国家重点实验室, 北京 100876

收稿日期:2020-08-28 出版日期:2020-12-28 发布日期:2020-11-30
通讯作者: 闫蕾(1978-),女,高级工程师,E-mail:yanlei@csu.ac.cn. E-mail:yanlei@csu.ac.cn
作者简介:何建华(1986-),男,工程师.
基金资助:
载人航天工程预研项目（18128060401）；中国电科空间网络智能化技术研究项目（GS2019002）

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

摘要/Abstract

摘要： 将卫星网络、无人机集群引入物联网应用，为第6代移动通信系统提供了参考的应用场景.对天基物联网中各层的数据收集方法进行了分析，提出了天基物联网中的数据收集策略.融合当前网络编码和多层分布式LT码的优势，提出了一种基于改进双层LT码的数据收集策略.该策略采取自适应分组编码机制，避免了因多路径交叉导致的数据丢失.仿真实验结果表明，该策略能够在网络连接不稳定的情况下，有效提升数据传输的成功率和吞吐量.

关键词: 第6代移动通信系统, 天基物联网, 数据收集, 网络编码

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

中图分类号:

TN929.53

何建华, 赵辉, 徐晓斌, 闫蕾, 王尚广. 基于改进双层LT码的天基物联网数据收集方法[J]. 北京邮电大学学报, 2020, 43(6): 118-125.

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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基于改进双层LT码的天基物联网数据收集方法

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

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