Design of QoS-aware energy-efficient fiber-wireless access networks
Design of QoS-aware energy-efficient fiber-wireless access networks
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DOI：
10.1364/jocn.4.000586
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发表时间：
2012-08
期刊：
影响因子：
--
通讯作者：
G. Schütz;N. Correia
中科院分区：
文献类型：
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作者：
G. Schütz;N. Correia
由于服务提供商基础设施的能源成本增加，节能网络设计最近已成为一个非常重要的话题。由于最终用户对数字流量的需求不断增长，这在接入网络中尤为重要。在这里，我们解决了降低光纤无线 (FiWi) 接入网络能耗的挑战，该网络使用光纤和射频技术为最终用户应用提供高带宽和普遍性，同时将延迟保持在阈值以下。我们的目标是找到最佳的睡眠模式调度，以减少能耗，同时保持数据包延迟可接受。为此目的，开发了数学形式化和算法。结果表明，在许多情况下，除了计算效率高且可扩展之外，所提出的方法还能够减少平均数据包延迟，而能源成本的增加可以忽略不计。因此，所提出的方法可以作为规划和设计服务质量感知的节能 FiWi 接入网络的基础。
Energy-efficient network design has recently become a very important topic because of the energy cost increases in service providers' infrastructures. This is of particular importance in access networks because of the growing demand for digital traffic by end users. Here we address the challenge of reducing the energy consumption of fiber-wireless (FiWi) access networks, which use both optical and radio frequency technologies to provide high bandwidth and ubiquity for end-user applications, while keeping delay under a threshold. Our goal is to find optimal sleep mode schedulings that allow energy consumption to be reduced while keeping packet delay acceptable. For this purpose a mathematical formalization and an algorithm are developed. The results show that the proposed approach is able to reduce the average packet delay, with negligible energy cost increases, in many scenarios, besides being computationally efficient and scalable. The proposed approach may, therefore, serve as a basis for planning and design of quality-of-service-aware energy-efficient FiWi access networks.