This paper focuses on a Centralized Radio Access Network solution adopting the concept of resource disaggregation. In this context, it proposes a heuristic suitable to optimally assign Base Band Unit processing functions in softwarized Radio Access Networks to different servers, taking into consideration their processing requirements with the aim to minimize the overall energy consumption. It also proposes the adoption of live migration of virtualized resources, in order to dynamically reallocate these functions to different servers that better match the continuously changing characteristics of 5G services, for increased energy efficiency purposes. The benefits associated with live migration are quantified through a series of experiments. Our results show a reduction of the number of switched-on servers through live migration that leads to a notable improvement in terms of resource and energy efficiency.

本文重点介绍采用资源分解概念的集中式无线接入网络解决方案。在这种情况下，它提出了一种启发式方法，该方法适合于在软化无线接入网中将基带单元的处理功能最佳地分配给不同的服务器，同时考虑到它们的处理要求，以最大程度地降低总体能耗。它还提议采用虚拟化资源的实时迁移，以便将这些功能动态地重新分配给更好地匹配5G服务不断变化的特性的不同服务器，以提高能源效率。通过一系列实验量化了与实时迁移相关的收益。