5G RAN: Functional Split Orchestration Optimization
5G RAN: Functional Split Orchestration Optimization
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DOI：
10.1109/jsac.2020.2999685
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发表时间：
2020-06
影响因子：
16.4
通讯作者：
Salma Matoussi;Ilhem Fajjari;Salvatore Costanzo;Nadjib Aitsaadi;R. Langar
中科院分区：
文献类型：
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作者：
Salma Matoussi;Ilhem Fajjari;Salvatore Costanzo;Nadjib Aitsaadi;R. Langar
5G RAN 旨在发展涵盖云基础设施、虚拟化技术和软件定义网络功能的新技术。引入了先进的解决方案，将无线接入网络 (RAN) 的功能在集中式和分布式位置之间进行划分。此类范例提高了 RAN 灵活性并降低了基础设施部署成本，而不会影响用户服务质量。我们提出了一种新颖的功能拆分编排方案，旨在最大限度地降低 RAN 部署成本，同时考虑其处理网络功能的要求和云基础设施的能力。通过基于用户的细粒度方法，我们表明所提出的解决方案优化了处理和带宽资源使用，同时与 i) 以小区为中心、ii) 分布式和 iii) 集中式 Cloud-RAN 方法相比，最大限度地降低了总体能耗。此外，我们还在基于开放空中接口 (OAI) 的 5G 实验原型中评估了我们的提案的有效性。我们表明，我们的解决方案在总部署成本和解决时间方面实现了良好的性能。
5G RAN aims to evolve new technologies spanning the Cloud infrastructure, virtualization techniques and Software Defined Network capabilities. Advanced solutions are introduced to split the functions of the Radio Access Network (RAN) between centralized and distributed locations. Such paradigms improve RAN flexibility and reduce the infrastructure deployment cost without impacting the user quality of service. We propose a novel functional split orchestration scheme that aims at minimizing the RAN deployment cost, while considering the requirements of its processing network functions and the capabilities of the Cloud infrastructure. With a fine grained approach on user basis, we show that the proposed solution optimizes both processing and bandwidth resource usage, while minimizing the overall energy consumption compared to i) cell-centric, ii) distributed and iii) centralized Cloud-RAN approaches. Moreover, we evaluate the effectiveness of our proposal in a 5G experimental prototype, based on Open Air Interface (OAI). We show that our solution achieves good performance in terms of total deployment cost and resolution time.