Enabling Virtual Radio Functions on Software Defined Radio for Future Wireless Networks
Enabling Virtual Radio Functions on Software Defined Radio for Future Wireless Networks
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DOI：
10.1007/s11277-020-07245-x
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发表时间：
2020-04-07
影响因子：
2.2
通讯作者：
Pollin, Sofie
中科院分区：
文献类型：
--
作者：
Liu, Wei;Santos, Joao F.;Pollin, Sofie
由于越来越多的功能是通过软件而不是专用硬件来实现的，因此今天的有线网络已经变得非常灵活。这种趋势对于无线网络仍处于早期阶段，但它有可能提高网络的灵活性和关于丰富的计算资源和稀缺的无线电频谱资源的资源利用率。在这项工作中，我们提供了一个网络重构，如网络功能虚拟化，软件定义的网络和软件定义的无线电使能技术的概述。我们回顾了软件化、虚拟化和编排等常用术语，以及这些概念如何应用于无线网络。我们介绍了虚拟无线电功能的概念，并说明如何软件化/虚拟化的无线电功能可以放置和初始化在运行时，允许无线电接入技术和频谱分配方案，以动态地形成。最后以嵌入式软件无线电作为终端设备，阐述了如何在这类设备上实现虚拟无线电功能的放置、初始化和配置。
Today's wired networks have become highly flexible, thanks to the fact that an increasing number of functionalities are realized by software rather than dedicated hardware. This trend is still in its early stages for wireless networks, but it has the potential to improve the network's flexibility and resource utilization regarding both the abundant computational resources and the scarce radio spectrum resources. In this work we provide an overview of the enabling technologies for network reconfiguration, such as Network Function Virtualization, Software Defined Networking, and Software Defined Radio. We review frequently used terminology such as softwarization, virtualization, and orchestration, and how these concepts apply to wireless networks. We introduce the concept of Virtual Radio Function, and illustrate how softwarized/virtualized radio functions can be placed and initialized at runtime, allowing radio access technologies and spectrum allocation schemes to be formed dynamically. Finally we focus on embedded Software-Defined Radio as an end device, and illustrate how to realize the placement, initialization and configuration of virtual radio functions on such kind of devices.