论文标题
雾无线电访问网络中基于MDS代码的组编码缓存
MDS Codes Based Group Coded Caching in Fog Radio Access Networks
论文作者
论文摘要
在本文中，我们研究了基于雾无线电访问网络（F-RAN）中的最大距离可分离（MDS）代码。目的是最大程度地减少在不均匀文件受欢迎下的平均领前率。首先，提出了基于MDS代码和基于文件分组的编码放置方案，以同时提供编码数据包，并分配更多的缓存到最受欢迎的文件。接下来，提出了一个基于雾的访问点（F-AP）分组的编码交付方案，以满足来自不同组的文件的请求。此外，得出了平均领前速率的闭合形式表达。最后，优化了与建议的编码缓存方案相关的参数，以充分利用MDS代码和文件分组带来的收益。仿真结果表明，我们所提出的方案在降低前税率方面对几种现有的缓存方案获得了显着改善。
In this paper, we investigate maximum distance separable (MDS) codes based group coded caching in fog radio access networks (F-RANs). The goal is to minimize the average fronthaul rate under nonuniform file popularity. Firstly, an MDS codes and file grouping based coded placement scheme is proposed to provide coded packets and allocate more cache to the most popular files simultaneously. Next, a fog access point (F-AP) grouping based coded delivery scheme is proposed to meet the requests for files from different groups. Furthermore, a closed-form expression of the average fronthaul rate is derived. Finally, the parameters related to the proposed coded caching scheme are optimized to fully utilize the gains brought by MDS codes and file grouping. Simulation results show that our proposed scheme obtains significant performance improvement over several existing caching schemes in terms of fronthaul rate reduction.
