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兼顾控制流量的软件定义卫星网络路由策略

费长江 赵宝康 虞万荣 吴纯青

费长江, 赵宝康, 虞万荣, 等 . 兼顾控制流量的软件定义卫星网络路由策略[J]. 北京航空航天大学学报, 2018, 44(12): 2575-2585. doi: 10.13700/j.bh.1001-5965.2018.0343
引用本文: 费长江, 赵宝康, 虞万荣, 等 . 兼顾控制流量的软件定义卫星网络路由策略[J]. 北京航空航天大学学报, 2018, 44(12): 2575-2585. doi: 10.13700/j.bh.1001-5965.2018.0343
FEI Changjiang, ZHAO Baokang, YU Wanrong, et al. A routing strategy for software defined satellite networks considering control traffic[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(12): 2575-2585. doi: 10.13700/j.bh.1001-5965.2018.0343(in Chinese)
Citation: FEI Changjiang, ZHAO Baokang, YU Wanrong, et al. A routing strategy for software defined satellite networks considering control traffic[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(12): 2575-2585. doi: 10.13700/j.bh.1001-5965.2018.0343(in Chinese)

兼顾控制流量的软件定义卫星网络路由策略

doi: 10.13700/j.bh.1001-5965.2018.0343
基金项目: 

网络技术创新团队 61202488

详细信息
    作者简介:

    费长江  男, 博士研究生。主要研究方向:软件定义卫星网络

    赵宝康  男, 博士, 副研究员。主要研究方向:卫星网络

    虞万荣  男, 博士, 副研究员。主要研究方向:卫星网络

    吴纯青  女, 博士, 研究员。主要研究方向:卫星网络

    通讯作者:

    赵宝康, E-mail: bkzhao@nudt.edu.cn

  • 中图分类号: TN929.5

A routing strategy for software defined satellite networks considering control traffic

Funds: 

Network Technology Innovation Team 61202488

More Information
  • 摘要:

    软件定义卫星网络(SDSN)通过解耦数据与控制平面,实现网络态势与控制的逻辑集中,为管理卫星网络提供了一种新的思路。在SDSN中,控制报文和数据报文同时在网络中传输,海量、动态、高优先级的控制流量将对数据报文传输产生极大的干扰。因此,提出了一种数据流退让路由(DFRR)策略。在计算数据报文路由时,DFRR将链路上控制流量大小作为影响链路代价的一个因素,以减少选择控制流量较大的链路;在网络操作控制中心(NOCC)连接的过顶卫星切换导致控制流量分布发生较大变化之前,DFRR预测可能发生拥塞的链路,并选出链路上部分数据流进行重路由,从而避免拥塞。在开发的SDSN研究平台OpenSatNet上对DFRR的性能进行了评估。实验结果表明,DFRR能够有效减少网络中的链路拥塞,以及控制报文和数据报文的分组丢失。

     

  • 图 1  SDSN架构

    Figure 1.  SDSN architecture

    图 2  SDSN控制报文传输

    Figure 2.  Control message transmission in SDSN

    图 3  不同时刻控制流量分布示意图

    Figure 3.  Sketch map of control traffic distributions at different time points

    图 4  拥塞链路预测示例

    Figure 4.  An example of congestion link prediction

    图 5  仿真界面

    Figure 5.  Emulation interface

    图 6  NONE与DFRR链路拥塞次数对比

    Figure 6.  Comparison of link congestion times between NONE and DFRR

    图 7  NONE与DFRR丢包率对比

    Figure 7.  Comparison of packet loss rates between NONE and DFRR

    图 8  NONE与DFRR分组时延对比

    Figure 8.  Comparison of packet delays between NONE and DFRR

    表  1  实验参数设置

    Table  1.   Experiment parameter setting

    参数数值
    卫星系统参数卫星轨道面数目6
    每个轨道内卫星数目11
    卫星轨道高度/km780
    极区边界纬度值/(°)60
    星间链路带宽/(Mbit·s-1)1
    星地链路带宽/(Mbit·s-1)10
    地面站与NOCC位置北京
    流量相关参数
    每条控制流传输
    速率/(Kbit·s-1)
    20
    数据流数目100

    数据流平均传输
    速率/(Kbit·s-1)
    50,60,70,
    80,90,100

    DFRR与NONE
    相关参数
    链路代价参数α1α2βγ2 000,1,1,0.01
    安全系数1
    速率-满意度函数Sl=100 th bl(bl>0)
    仿真时间/s6 034.7
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-06-08
  • 录用日期:  2018-07-27
  • 刊出日期:  2018-12-20

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