论文标题
在雾辅网络中使用无线方向并且交付的在线缓存
Online Caching with Wireless Fronthauling and Delivery in Fog-Aided Networks
论文作者
论文摘要
FOG无线电访问网络（F-RAN）利用边缘节点（ENS）和Fronthaul连接到云以进行内容传递的缓存内容。假设云与每个EN之间的专用领域链接，则以前的作品着重于使用离线或在线缓存的F-RAN的分析，这取决于内容流行度是时间不变还是时间变化。已经为多播Fronthaul链路连接云连接到仅两个ENS和时间不变的受欢迎程度而进行了扩展。相比之下，这项工作的范围在于，多播Fronthaul链接将任意数量的ENS连接到云，并且内容受欢迎程度是时变的。归一化交付时间（NDT）用作绩效指标，并通过研究主动的在线缓存，分析结果表明，Fronthaul传输的功率缩放限制了F-RAN的性能。
Fog Radio Access Network (F-RAN) exploits cached contents at edge nodes (ENs) and fronthaul connection to the cloud for content delivery. Assuming dedicated fronthaul links between cloud and each EN, previous works focused on analyses of F-RANs using offline or online caching depending whether the content popularity is time-invariant or time-variant. Extension has been done for multicast fronthaul link connecting cloud to only two ENs and time-invariant popularity. In contrast, the scope of this work is on the case where multicast fronthaul link connects arbitrary number of ENs to the cloud and content popularity is time-variant. Normalized Delivery Time (NDT) is used as a performance measure and by investigating proactive online caching, analytical results reveal that the power scaling of fronthaul transmission sets a limit on the performance of F-RAN.
