Wardrop Equilibrium Formulation of Resource-Constrained DTN Routing in Public Safety Networks
Wardrop Equilibrium Formulation of Resource-Constrained DTN Routing in Public Safety Networks
复制标题
公共安全网络中资源受限 DTN 路由的 Wardrop 均衡公式
DOI：
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发表时间：
2011
期刊：
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通讯作者：
Farid Benbadis
中科院分区：
文献类型：
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作者：
Pierre;V. Conan;J. Crowcroft;Jérémie Leguay;M. Amorim;Farid Benbadis
在本文中，我们研究的能力，使用延迟容忍网络（DTN）在公共安全网络的带宽和存储的限制。我们正式的问题作为一个Wardrop均衡的时间离散图。我们的研究结果的驱动下，我们提出了RECOR，一个集中的资源约束的基于Oracle的DTN路由机制，分散在多个存储进行转发路径的需求，以满足节点存储和链路传输的限制，观察干预的情况。通过将所提出的机制应用于真实的基于蓝牙的DTN跟踪，我们表明，传输瓶颈可以得到补偿，但只有在一定程度上，通过增加存储容量和延迟。我们还分析了为高度连接的节点（例如救护车和消防车）提供更多资源的策略的好处，这些节点可以为DTN网络工程提供激励和政策。最后，这里提出的想法是一般性的，并建议跟踪驱动的模拟和具体的建模工具，为未来DTN资源管理政策的适当设计的必要性。© 2011 IEEE.
In this paper, we investigate the ability of using Delay Tolerant Networking (DTN) in Public Safety networks where bandwidth and storage are constrained. We formalize the problem as a Wardrop equilibrium over a time-discretized graph. Driven by our findings, we propose RECOR, a centralized REsource-Constrained ORacle-based DTN routing mechanism which spreads the demand across multiple store-carry forward paths to satisfy the node storage and link transport constraints observed in intervention situations. By applying the proposed mechanism to real Bluetooth-based DTN traces, we show that the transmission bottleneck can be compensated, but only up to a certain extent, by increasing storage capacity and delay. We also analyze the benefit of strategies that provide more resources to highly connected nodes (e.g. ambulances and firetrucks) which can then feed incentives and policies for DTN network engineering. Finally, the idea presented here is general and suggests the necessity of trace-driven simulation and specific modeling tools for appropriate design of future DTN resource management policies. © 2011 IEEE.