Adaptive C-RAN Architecture with Moving Nodes Toward Beyond the 5G Era
Adaptive C-RAN Architecture with Moving Nodes Toward Beyond the 5G Era
复制标题
自适应C-RAN架构与移动节点迈向超越5G时代
DOI：
10.1109/mnet.001.1900510
复制
发表时间：
2020
期刊：
影响因子：
9.3
通讯作者：
K. Maruta
中科院分区：
文献类型：
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作者：
Yu Nakayama;D. Hisano;K. Maruta
C-RAN架构已经在用于5G及更高版本的移动的网络中流行。沿着移动的数据量的显着增加，网络运营商必须考虑由于人类移动性和生活方式而产生的流量需求的时空模式。有效地部署移动的网络以避免在非高峰时间小区容量的未充分利用已经成为一个重要的问题。为了解决这个问题，在本文中，我们提出了一个面向超5G时代的自适应C-RAN架构的概念。所提出的架构使得能够考虑需求分布的变化来灵活地重新配置无线电单元（RU）状态和可移动DU位置。DU和罗斯组成无线中继前传网络，以转发满足严格延迟要求的前传流。本文还提出了联合调度算法来激活罗斯，重新定位DU，并确定前传流的转发路径。仿真结果表明，该方法可以通过激活/去激活罗斯和重新定位/迁移DU来有效地重构移动的网络.
The C-RAN architecture has been prevailing in mobile networks for 5G and beyond. Along with the significant increase in the amount of mobile data, network operators must consider the spatio-temporal pattern of traffi c demand due to human mobility and lifestyles. It has been an important problem to efficiently deploy mobile networks avoiding the underutilization of cell capacities in off -peak times. To address this problem, in this paper we propose a concept of an adaptive C-RAN architecture toward the beyond 5G era. The proposed architecture enables flexible reconfi guration of the radio unit (RU) states and movable DU locations considering the changes in demand distribution. The DUs and RUs compose wireless relay fronthaul networks to forward fronthaul streams satisfying the strict latency requirements. This paper also proposes the joint scheduling algorithm to activate RUs, relocate DUs, and determine forwarding paths of fronthaul streams. It was confi rmed with computer simulations that mobile networks can be efficiently reconstructed with the proposed idea by activating/deactivating RUs and relocating/ migrating DUs.