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An optimal delay routing algorithm considering delay variation in the LEO satellite communication network

机译:考虑Leo卫星通信网络延迟变化的最佳延迟路由算法

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摘要

In the LEO satellite communication network, delay is not fixed but varying in a regular manner. Moreover, traditional routing planning algorithms lose sight of delay variation and need intensive computation. These have led to incomprehensive performance assessment of the satellite network and large resource occupancy. Effective routing scheme with uncertain delay information is the novel problem that we solve in this paper. An optimal delay routing algorithm called delay queuing graphical evaluation and review technique minimal path set is proposed. First, based on the delay queuing graphical evaluation and review technique (DQ-GERT) and the minimum path set, the satellite network is characterized and all valid candidate paths are selected. Second, the delay evaluation index that includes delay and its variation to evaluate possible routes is derived. Simulation results show the superiority of the proposed algorithm by comparing with existing algorithms.
机译:在Leo卫星通信网络中,延迟不固定,而是以规则的方式变化。此外,传统的路由规划算法忽略了延迟变化,需要密集的计算。这些导致了对卫星网络和大资源占用的不计的性能评估。具有不确定延迟信息的有效路由方案是我们在本文中解决的新问题。提出了一种称为延迟排队图形评估和审查技术最小路径集的最佳延迟路由算法。首先,基于延迟排队图形评估和审查技术(DQ-GERT)和最小路径集,卫星网络的特征在于,并且选择了所有有效的候选路径。其次,推导了包括延迟及其评估可能路由的变化的延迟评估指标。仿真结果通过与现有算法进行比较,显示了所提出的算法的优越性。

著录项

  • 来源
    《Computer networks》 |2020年第may22期|107166.1-107166.13|共13页
  • 作者单位

    Nanjing Univ Aeronaut & Astronaut Coll Econ & Management Nanjing 211106 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut Coll Econ & Management Nanjing 211106 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut Coll Econ & Management Nanjing 211106 Peoples R China;

    China Acad Space Technol CAST Inst Telecommun Satellite Beijing 100094 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    LEO satellite communication network; Optimal delay routing; Delay evaluation index;

    机译:Leo卫星通信网络;最佳延迟路由;延迟评估指标;

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