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Policy-enabled traffic engineering in maritime tactical networks.

机译：海上战术网络中基于策略的流量工程。

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摘要

Naval at sea (maritime tactical) networks are characterised by a dynamic, heterogeneous, and low-bandwidth environment. The effective management of communication resources in this domain is critical, but is hampered by constraints imposed by a hierarchical command structure and dynamic mission requirements. The most critical network management issue in maritime networks is the limited bandwidth connecting each node (ship) is often insufficient to support the network traffic generated locally. This leads to very poor perceived Quality of Service (QoS) for all traffic. A solution common in fixed networks is to use Traffic Engineering (TE) techniques. The goal of TE is to facilitate efficient and reliable network operations while simultaneously optimizing network resource utilization and traffic performance.;This concept has been applied in the maritime environment by developing four Policy-Enabled Traffic Engineering (PETE) services for this environment: traffic monitoring, traffic prioritisation, adaptive routing, and resource reservation. The flow-based resource reservation service is a novel mechanism we developed to provide robust and efficient end-to-end bandwidth reservations.;To evaluate the PETE services, our methodology focused on modelling and performance evaluation of the management services using simulation. Since maritime networks have not been described in depth in the literature, the modelling exercise provided valuable insight into the challenges of operating such networks. Simulation allowed us to evaluate our management solutions for different networks sizes, node mobility, and traffic types.;Results from these simulations are encouraging. With policy control, the traffic monitoring service was able to adapt to dynamic network conditions and provide global traffic statistics within a policy defined delay. The traffic prioritisation service was able to achieve an improvement in delay from approximately 17% in a saturated network to 52% in an overloaded network. Similarly, adaptive routing greatly improved the QoS achieved by sending some traffic over under-used links while simultaneously improving the QoS of other traffic by spreading the load over multiple links. The resource reservation service was found to be particularly effective in the maritime environment with an acceptance rate 19-76% better than RSVP and 86-1095% better than INSIGNIA, two alternative reservation protocols. The resource reservation service model was validated against results from a prototype implementation.
机译：海军海上战术网络的特点是动态，异构和低带宽的环境。在此领域中，对通信资源的有效管理至关重要，但受到分层命令结构和动态任务要求所施加的约束的阻碍。海事网络中最关键的网络管理问题是连接每个节点（船）的有限带宽通常不足以支持本地生成的网络流量。这导致所有流量的感知服务质量（QoS）非常差。固定网络中常见的解决方案是使用流量工程（TE）技术。 TE的目标是促进高效且可靠的网络运行，同时优化网络资源利用率和流量性能。此概念已在海事环境中得到应用，为此环境开发了四项基于策略的流量工程（PETE）服务：流量监控，流量优先级，自适应路由和资源预留。基于流的资源预留服务是我们开发的一种新颖机制，旨在提供健壮和高效的端到端带宽预留。为了评估PETE服务，我们的方法侧重于通过仿真对管理服务进行建模和性能评估。由于在文献中没有对海事网络进行深入描述，因此建模工作为操作此类网络的挑战提供了宝贵的见解。仿真使我们能够评估针对不同网络规模，节点移动性和流量类型的管理解决方案。这些仿真的结果令人鼓舞。通过策略控制，流量监控服务能够适应动态网络条件，并在策略定义的延迟内提供全局流量统计信息。流量优先级服务能够将延迟从饱和网络中的大约17％改善到过载网络中的52％的延迟。同样，自适应路由极大地提高了通过在未充分利用的链路上发送一些流量而获得的QoS，同时通过将负载分散在多个链路上来提高了其他流量的QoS。发现资源预留服务在海上环境中特别有效，两种替代预留协议的接受率比RSVP高19-76％，比INSIGNIA高86-1095％。根据原型实现的结果验证了资源保留服务模型。

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  • 作者

    Kidston, David A.;

  • 作者单位

    Carleton University (Canada).;

  • 授予单位 Carleton University (Canada).;
  • 学科 Engineering Marine and Ocean.;Engineering System Science.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 192 p.
  • 总页数 192
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 海洋工程;系统科学;
  • 关键词

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