Caching multimedia contents at the network edge is a key solution to decongest the amount of traffic in the backhaul link. In this paper, we extend and analyze the coded caching technique [1] in an unexplored scenario, i.e. at the edge of two-tier heterogeneous networks with an arbitrary number of users. We characterize the performance of such scheme by deriving a closed-form expression of the average backhaul load and reveal a significant gain compared to other benchmark caching schemes proposed in the literature.

翻译：在网络边缘缓存多媒体内容是消减回水道链接流量的关键解决办法。 在本文中,我们扩展和分析未探索的加密缓冲技术[1],即具有任意用户数目的两级不同网络的边缘。我们通过对平均回水道负载进行封闭式表达来描述这种图案的性能,并表明与文献中提议的其他基准缓冲计划相比有很大的收益。