论文标题

在使用蜂窝网络中使用LDPC代码的耐受耐受性分布数据缓存上

On the Fault Tolerant Distributed Data Caching using LDPC Codes in Cellular Networks

论文作者

Haytaoglu, Elif, Kaya, Erdi, Arslan, Suayb S.

论文摘要

由于移动数据,基本站摩托车设备通信流量最近大大增加了,这反过来又大大超过了基础架构。为了减少基站(BS)的相互作用,将本地设备之间的细胞内通信(称为设备到设备)用于分布式数据缓存。然而,由于现有节点的持续离开和新移民的到来,丢失的缓存数据可能会导致永久数据丢失。在这项研究中,我们建议和分析一类LDPC代码,以用于细胞网络中的分布式数据缓存。与传统的分布式存储相反,提出了一种新颖的LDPC代码维修算法,旨在利用最小的直接BS通信。为了评估LDPC代码的多功能性并与经典编码技术建立性能比较,得出了新的理论和实验评估。本质上,在存在BS的情况下,在分布式缓存设置中呈现了修复带宽成本的理论/数值结果。因此,当从BS下载符号和其他本地网络节点的成本之间的差距并不高于高度时,我们证明LDPC代码可以被视为具有低代码和高代码速率的缓存功能的蜂窝系统中可行的耐受性替代方案。

The base station-mobile device communication traffic has dramatically increased recently due to mobile data, which in turn heavily overloaded the underlying infrastructure. To decrease Base Station (BS) interaction, intra-cell communication between local devices, known as Device-to-Device, is utilized for distributed data caching. Nevertheless, due to the continuous departure of existing nodes and the arrival of newcomers, the missing cached data may lead to permanent data loss. In this study, we propose and analyze a class of LDPC codes for distributed data caching in cellular networks. Contrary to traditional distributed storage, a novel repair algorithm for LDPC codes is proposed which is designed to exploit the minimal direct BS communication. To assess the versatility of LDPC codes and establish performance comparisons to classic coding techniques, novel theoretical and experimental evaluations are derived. Essentially, the theoretical/numerical results for repair bandwidth cost in presence of BS are presented in a distributed caching setting. Accordingly, when the gap between the cost of downloading a symbol from BS and from other local network nodes is not dramatically high, we demonstrate that LDPC codes can be considered as a viable fault-tolerance alternative in cellular systems with caching capabilities for both low and high code rates.

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