设计可靠的虚拟化无线接入网络

Ufuk Usubütün, André Gomes, Shankaranarayanan Puzhavakath Narayanan, Matti Hiltunen, Shivendra Panwar
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引用次数: 0

摘要

随着无线接入网(RAN)虚拟化的发展,了解硬件和软件分解对弹性的影响对于满足移动网络的高可用性要求至关重要。我们的论文提出了一个分析模型,利用连续时间马尔可夫链研究虚拟化和分解对 RAN 可用性的影响。假定故障和恢复速率的典型参数值范围,结果表明容器化平台的可靠性是对 vRAN 可用性的限制。我们还发现,在主动-被动复制的情况下,将硬件复制系数提高到 2 以上可能不会带来任何好处,除非故障切换时间缩短。我们还比较了集中式和分布式虚拟化中央单元的可靠性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Designing Reliable Virtualized Radio Access Networks
As virtualization of Radio Access Networks (RAN) gains momentum, understanding the impact of hardware and software disaggregation on resiliency becomes critical to meet the high availability requirements of mobile networks. Our paper presents an analytical model, using continuous time Markov chains, to study the impact of virtualization and disaggregation on RAN availability. Our evaluation, assuming typical parameter value ranges for failure and recovery rates, points to containerized platform reliability as a constraint on vRAN availability. We also find that with active-passive replication, increasing hardware replication factor beyond 2 may not bring any benefits unless failover times are reduced. We also compare the reliability of centralized and distributed virtualized central units.
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