| 引用本文: | 郑静雅,安军社.SpaceFibre网络服务质量时隙资源分配算法.[J].国防科技大学学报,2021,43(2):74-83.[点击复制] |
| ZHENG Jingya,AN Junshe.Time-slot allocation algorithm of quality of service for SpaceFibre[J].Journal of National University of Defense Technology,2021,43(2):74-83[点击复制] |
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| SpaceFibre网络服务质量时隙资源分配算法 |
| 郑静雅1,2 ,安军社1 |
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(1. 中国科学院国家空间科学中心 复杂航天系统电子信息技术重点实验室, 北京 100190;2. 中国科学院大学, 北京 100049)
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| 摘要: |
| 为保证SpaceFibre星载数据网络大量实时数据流的超高速确定性传输,提出一种包含两个子算法的SpaceFibre网络服务质量时隙资源分配算法。形式化描述网络服务质量机制,给出调度矩阵相关定义；创建网络服务质量排队模型,定量分析时隙资源分配对网络时延性能的影响；考虑网络兼容性和算法鲁棒性,给出改进二进制序列调度子算法；采用提高初始种群进化程度和增加遗传算子等方法,给出改进混合单亲遗传调度子算法；利用Opnet网络仿真平台建立网络服务质量仿真模型,对比不同算法下网络时延性能。仿真结果表明,该时隙资源分配算法与其他算法相比,网络平均延时降低,网络性能得到显著改善,对构建低延时SpaceFibre网络具有参考意义。 |
| 关键词: 星载网络 SpaceFibre 服务质量 分析建模 性能优化 |
| DOI：10.11887/j.cn.202102011 |
| 投稿日期：2020-03-03 |
| 基金项目:中国科学院战略性先导科技专项基金资助项目(XDA15020205) |
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| Time-slot allocation algorithm of quality of service for SpaceFibre |
| ZHENG Jingya1,2, AN Junshe1 |
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(1. Key Laboratory of Electronics and Information Technology for Space Systems, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China)
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| Abstract: |
| In order to achieve the deterministic transmission of the massive real-time data streams in a short time on the SpaceFibre onboard data network, the time-slot allocation algorithm of QoS (quality of service) for SpaceFibre was proposed. Formally the QoS of SpaceFibre network was described and the definitions of scheduling matrix were given; the queuing model of QoS was created and the impact of time-slot allocation on delay performance was quantitatively analyzed; From the perspective of network compatibility and robustness of algorithm, an improved binary sequence scheduling sub-algorithm was derived; the improved hybrid partheno-genetic scheduling sub-algorithm with the highly evolved initial population and more genetic operators was given; the SpaceFibre communication model was established by using the Opnet network simulation platform to compare with the delay performance under different algorithms. Simulation results show that the time-slot allocation algorithm has lower average latency compared with other algorithms. The performance of the network is optimized. The research results can provide a reference for building a low-latency SpaceFibre network. |
| Keywords: onboard network SpaceFibre quality of service analytical model performance optimizing |
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