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The role of computational outage in dense cloud-based centralized radio access networks

机译：计算中断在基于密集云的集中式无线电接入网中的作用

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Centralized radio access network architectures consolidate the baseband operation towards a cloud-based platform, thereby allowing for efficient utilization of computing assets, effective inter-cell coordination, and exploitation of global channel state information. This paper considers the interplay between computational efficiency and data throughput that is fundamental to centralized RAN. It introduces the concept of computational outage in mobile networks, and applies it to the analysis of complexity constrained dense centralized RAN networks. The framework is applied to single-cell and multi-cell scenarios using parameters drawn from the LTE standard. It is found that in computationally limited networks, the effective throughput can be improved by using a computationally aware policy for selecting the modulation and coding scheme, which sacrifices spectral efficiency in order to reduce the computational outage probability. When signals of multiple base stations are processed centrally, a computational diversity benefit emerges, and the benefit grows with increasing user density.
机译：集中式无线接入网络架构将基带操作整合到基于云的平台，从而实现了对计算资产的有效利用，有效的小区间协调以及对全球信道状态信息的利用。本文考虑了计算效率和数据吞吐量之间的相互作用，这是集中式RAN的基础。它介绍了移动网络中的计算中断的概念，并将其应用于复杂度受限的密集集中式RAN网络的分析。该框架使用从LTE标准提取的参数应用于单小区和多小区方案。发现在受计算限制的网络中，可以通过使用用于选择调制和编码方案的具有计算意识的策略来提高有效吞吐量，该策略会牺牲频谱效率以降低计算中断的可能性。当集中处理多个基站的信号时，出现了计算多样性的好处，并且好处随着用户密度的增加而增长。

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