We consider a dense cellular network, in which a limited-size cache is available at every base station (BS). Coordinating content allocation across the different caches can lead to significant performance gains, but is a difficult problem even when full information about the network and the request process is available. In this paper we present qLRU-$\Delta$, a general-purpose dynamic caching policy that can be tailored to optimize different performance metrics also in presence of coordinated multipoint transmission techniques. The policy requires neither direct communication among BSs, nor a priori knowledge of content popularity and, under stationary request processes, has provable performance guarantees.
翻译:我们认为,这是一个密集的蜂窝网络,每个基地站都有一个数量有限的缓存点,协调不同缓存点之间的内容分配可带来显著的绩效收益,但即使有关于网络和请求程序的全部信息,这是一个困难的问题;在本文件中,我们提出qLRU-$=Delta$,这是一项通用的动态缓存政策,可以在协调的多点传输技术下,为优化不同性能衡量标准而量身定制,该政策既不要求银行间直接沟通,也不要求事先了解内容的普及程度,而且根据固定请求程序,该政策具有可验证的绩效保障。