论文标题
无线网络中延迟最佳移动边缘部署的分析框架
An Analytical Framework for Delay Optimal Mobile Edge Deployment in Wireless Networks
论文作者
论文摘要
新兴的边缘缓存提供了减少移动用户服务延迟的有效方法。但是，由于边缘宿主的高部署成本，一个实际问题是如何在适当的边缘部署策略下实现最小延迟。在这封信中，我们提供了一个分析框架，用于在部分连接的无线网络中延迟最佳移动边缘部署，在该网络中，请求文件可以在边缘主机上缓存并通过多个基站进行合作传输。为了处理异质传输要求，我们将整个变速箱分为回程和无线阶段，并提出平均用户标准化时间（Aundt）作为性能指标。最重要的是，我们表征了拟议的Aundt和其他网络部署参数之间的权衡关系。使用拟议的分析框架，我们能够根据Aundt提供最佳的移动边缘部署策略，该策略为将来的移动边缘部署提供了有用的指南。
The emerging edge caching provides an effective way to reduce service delay for mobile users. However, due to high deployment cost of edge hosts, a practical problem is how to achieve minimum delay under a proper edge deployment strategy. In this letter, we provide an analytical framework for delay optimal mobile edge deployment in a partially connected wireless network, where the request files can be cached at the edge hosts and cooperatively transmitted through multiple base stations. In order to deal with the heterogeneous transmission requirements, we separate the entire transmission into backhaul and wireless phases, and propose average user normalized delivery time (AUNDT) as the performance metric. On top of that, we characterize the trade-off relations between the proposed AUNDT and other network deployment parameters. Using the proposed analytical framework, we are able to provide the optimal mobile edge deployment strategy in terms of AUNDT, which provides a useful guideline for future mobile edge deployment.
