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一种软件定义卫星网络的多波束切换机制

张佳乐 钱红燕 成翔 陈兵

张佳乐, 钱红燕, 成翔, 等 . 一种软件定义卫星网络的多波束切换机制[J]. 北京航空航天大学学报, 2018, 44(12): 2503-2509. doi: 10.13700/j.bh.1001-5965.2018.0333
引用本文: 张佳乐, 钱红燕, 成翔, 等 . 一种软件定义卫星网络的多波束切换机制[J]. 北京航空航天大学学报, 2018, 44(12): 2503-2509. doi: 10.13700/j.bh.1001-5965.2018.0333
ZHANG Jiale, QIAN Hongyan, CHENG Xiang, et al. A multi-beam handover mechanism in software-defined satellite network[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(12): 2503-2509. doi: 10.13700/j.bh.1001-5965.2018.0333(in Chinese)
Citation: ZHANG Jiale, QIAN Hongyan, CHENG Xiang, et al. A multi-beam handover mechanism in software-defined satellite network[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(12): 2503-2509. doi: 10.13700/j.bh.1001-5965.2018.0333(in Chinese)

一种软件定义卫星网络的多波束切换机制

doi: 10.13700/j.bh.1001-5965.2018.0333
基金项目: 

国家自然科学基金 61672283

详细信息
    作者简介:

    张佳乐  男, 博士研究生。主要研究方向:软件定义网络、网络安全

    钱红燕  女, 博士, 副教授, 硕士生导师。主要研究方向:计算机网络、无线通信、信息安全等

    通讯作者:

    钱红燕, E-mail: qhy98@nuaa.edu.cn

  • 中图分类号: TP393

A multi-beam handover mechanism in software-defined satellite network

Funds: 

National Natural Science Foundation of China 61672283

More Information
  • 摘要:

    传统的卫星网络通常将控制层和数据层集中在同一网络设备中,使得网络结构复杂、带宽固定、资源利用率差,而软件定义卫星网络(SDSN)架构能实现卫星资源的有效管理,提高资源利用率,为多波束间切换机制提供有效的技术支撑。针对具有多波束覆盖的SDSN,提出了一种多决策指标切换(MDIH)机制。首先,分析了传统切换机制的缺陷,确立了基于SDSN的切换框架。其次,在传统信道预留机制的基础上,引入时间门限的概念,使得切换机制能够精确触发;同时,在切换决策过程中,采用MDIH算法来确定用户的切换优先级,决策粒度细。最后,给出了一种抽象化多决策指标实例,进一步体现了MDIH算法的可扩展性。

     

  • 图 1  SDSN切换架构

    Figure 1.  Handover framework of SDSN

    图 2  多波束卫星示意图

    Figure 2.  Schematic diagram of multi-beam satellite

    图 3  波束间切换过程示意图

    Figure 3.  Schematic diagram of handover process among beams

    图 4  波束覆盖的一维移动模型

    Figure 4.  One-dimensional moving model of beam coverage

    图 5  MDIH算法流程

    Figure 5.  Flowchart of MDIH algorithm

    图 6  切换管理流程

    Figure 6.  Flowchart of handover management

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出版历程
  • 收稿日期:  2018-06-07
  • 录用日期:  2018-08-10
  • 刊出日期:  2018-12-20

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