Routing and traffic engineering in hybrid RF/FSO networks

Routing and traffic engineering in hybrid RF/FSO networks
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混合 RF/FSO 网络中的路由和流量工程

DOI:
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发表时间:
2005
期刊:
IEEE International Conference on Communications, 2005. ICC 2005. 2005
影响因子:
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通讯作者:
M. Shayman
M. Shayman
中科院分区:
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文献类型:
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作者:
Abhishek Kashyap;M. Shayman

文献摘要

被引文献

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利用射频和自由空间光(FSO)链路的特点,提出了一种适用于混合RF/FSO骨干网络的路由框架。FSO链路提供更高的带宽和安全性,而RF链路提供更高的可靠性。我们提出了针对不同类别流量的关键度指数的概念,并以加权最大-最小公平的方式为流量提供耐遮挡路径。对于交通需求可以沿着多条路径进行路由的情况,我们提供了一种最优算法。路由不可分流量的问题是NP难的,因此我们提出了有效的启发式算法来路由它们。我们做了大量的仿真,以证明我们的算法比目前使用的算法性能更好。
We provide a routing framework for hybrid RF/FSO backbone networks, utilizing the characteristics of RF and free space optical (FSO) links. FSO links offer higher bandwidth and security, while RF links offer more reliability. We propose the concept of criticality index for different classes of traffic and providing obscuration-tolerant paths to the traffic in a weighted max-min fair way. We provide an optimal algorithm for the case where a traffic demand can be routed along multiple paths. The problem of routing unsplittable traffic is NP-hard, so we propose efficient heuristics for routing them. We do extensive simulations to demonstrate that our algorithms outperform the algorithms currently in use.