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

北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (12): 2575-2585.doi: 10.13700/j.bh.1001-5965.2018.0343

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

国防科技大学计算机学院, 长沙 410073

收稿日期:2018-06-08 修回日期:2018-07-27 出版日期:2018-12-20 发布日期:2018-12-28
通讯作者: 赵宝康 E-mail:bkzhao@nudt.edu.cn
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。
基金资助:
网络技术创新团队（61202488）

A routing strategy for software defined satellite networks considering control traffic

FEI Changjiang, ZHAO Baokang, YU Wanrong, WU Chunqing

College of Computer, National University of Defense Technology, Changsha 410073, China

Received:2018-06-08 Revised:2018-07-27 Online:2018-12-20 Published:2018-12-28
Supported by:
Network Technology Innovation Team (61202488)

摘要/Abstract

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。

关键词: 软件定义卫星网络(SDSN), 卫星网络, 路由策略, 控制报文, 拥塞避免

Abstract: Software defined satellite networks (SDSN) provides an innovative perspective to manage satellite networks through decoupling the data and control planes to achieve logically centralized network states and controls. In SDSN, control messages and data packets are simultaneously transmitted in the network. Massive, dynamic and high-priority control traffic will cause significant interference to data packet transmission. Therefore, a data flow retreat routing (DFRR) strategy is proposed. When calculating data packet routes, DFRR takes control traffic on a link as a factor affecting the link cost to reduce choosing links with large control traffic; before control traffic distribution changing greatly caused by the handoff of overhead satellite connecting with the network operation and control center (NOCC), DFRR predicts probable congested links and selects some data flows on these links for rerouting to avoid congestions. The performance of DFRR is evaluated on OpenSatNet, a research platform we developed for SDSN. The experiment results show that DFRR can reduce link congestions in the network and the packet losses of control messages and data packets effectively.

Key words: software defined satellite networks (SDSN), satellite network, routing strategy, control message, congestion avoidance

中图分类号:

TN929.5

费长江, 赵宝康, 虞万荣, 吴纯青. 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.

FEI Changjiang, ZHAO Baokang, YU Wanrong, WU Chunqing. A routing strategy for software defined satellite networks considering control traffic[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2018, 44(12): 2575-2585.

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兼顾控制流量的软件定义卫星网络路由策略

A routing strategy for software defined satellite networks considering control traffic

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