QoE-Guaranteed and Power-Efficient Network Operation for Cloud Radio Access Network With Power Over Fiber
QoE-Guaranteed and Power-Efficient Network Operation for Cloud Radio Access Network With Power Over Fiber
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DOI：
10.1109/tcss.2016.2518208
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发表时间：
2015-12
影响因子：
5
通讯作者：
Katsuya Suto;Keisuke Miyanabe;Hiroki Nishiyama;N. Kato;H. Ujikawa;Ken-ichi Suzuki
中科院分区：
文献类型：
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作者：
Katsuya Suto;Keisuke Miyanabe;Hiroki Nishiyama;N. Kato;H. Ujikawa;Ken-ichi Suzuki
云无线电接入网络（C-RAN）的概念正在成为一种流行的解决方案，以支持未来网络环境中新出现的服务所需的通信质量，即，超过10 Gbps的容量、不到1 ms的延迟以及可连接多种设备。在本文中，我们设想了一种基于无源光网络（PON）的C-RAN，利用光纤供电（PoF），实现了低安装和运营成本，因为它能够在没有外部电源的情况下为大量的远程射频头（RRH）提供通信服务。然而，由于光纤熔丝问题，该网络需要降低PoF的光传输功率。此外，服务、设备和个性的多样化表明需要提高用户满意度，即，体验质量（QoE），基于用户的视角，这不同于旨在保证服务质量（QoS）的先前方法。因此，我们提出了一种QoE保证和功率有效的网络操作策略。我们提出的操作是能够降低传输功率，同时满足QoE约束，通过控制RRH的睡眠和光传输功率的PoF的时间表。此外，我们提出的操作方案的有效性进行了评估，通过广泛的计算机模拟。
A concept of cloud radio access networks (C-RANs) is becoming a popular solution to support the required communication quality for new emerging service in the future network environment, i.e., more than 10 Gbps capacity, less than 1 ms latency, and connectivity for numerous devices. In this paper, we envision a C-RAN based on passive optical network (PON) exploiting power over fiber (PoF), which achieves low installation and operation costs since it is capable of providing communication services without external power supply for large amount of remote radio heads (RRHs). This network, however, needs to reduce the optical transmission power of PoF due to the fiber fuse issue. Additionally, the diversification of services, devices, and personality indicates the need to improve user satisfaction, i.e., quality of experience (QoE), based on the user's perspective, which is different from previous approaches that aim to guarantee quality of services (QoS). Therefore, we propose a QoE-guaranteed and power-efficient network operation strategy. Our proposed operation is able to reduce the transmission power while satisfying the QoE constraint by controlling both the schedule of RRH's sleep and optical transmission power of PoF. Furthermore, the effectiveness of our proposed operation scheme is evaluated through extensive computer simulations.