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arXiv 2201.10577cs.ITmath.IT
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使用布局传送阵列的具有已知用户到缓存关联简档的共享缓存编码缓存方案

Shared Cache Coded Caching Schemes with known User-to-Cache Association Profile using Placement Delivery Arrays

Elizabath Peter, K. K. Krishnan Namboodiri, B. Sundar Rajan

摘要:

这项工作认为,编码的缓存问题与共享缓存,用户共享的缓存,每个用户只能访问一个缓存。在放置阶段,假设用户到缓存的关联在服务器上是已知的。我们专注于使用布局交付阵列(PDA)的计划。PDA最初设计用于解决专用缓存设置中编码缓存的子分组化瓶颈。我们观察到,在本文的设置中,排列PDA的列会导致针对同一问题具有不同性能的方案,但子分组化级别保持不变。这与专用高速缓存网络所观察到的情况相反。我们提出了一个程序来确定列的顺序,给出了最好的性能可能为PDA用于给定的问题。此外,一些特定类别的PDA被选择和性能增益实现的列的PDA重新排序示出。

英文摘要:

This work considers the coded caching problem with shared caches, where users share the caches, and each user gets access only to one cache. The user-to-cache association is assumed to be known at the server during the placement phase. We focus on the schemes derived using placement delivery arrays (PDAs). The PDAs were originally designed to address the sub-packetization bottleneck of coded caching in a dedicated cache setup. We observe that in the setup of this paper permuting the columns of the PDA results in schemes with different performance for the same problem, but the sub-packetization level remains the same. This is contrary to what was observed for dedicated cache networks. We propose a procedure to identify the ordering of columns that gives the best performance possible for the PDA employed for the given problem. Further, some specific classes of PDAs are chosen and the performance gain achieved by reordering the columns of the PDA is illustrated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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