為了支持高數據傳輸，低延遲和許多場景的要求，第五代移動網絡應該具有可擴展性和靈活性。自組織網絡 SON (Self-organizing Network) 和虛擬化技術都是實現此問題的好方法。SON 提供自動配置、自動優化和自動修復，以減少人事及管理上的成本，並根據各設備的附載達到動態優化參數。虛擬化提供抽象、共享基礎設施和無線電資源。這兩個是通過降低基地台部署和維護成本來實現5G移動網絡的高效率和低延遲的關鍵。在本文中，我們通過使用通用軟體無線電外部設備 USRP (Universal Software Radio Peripheral) 硬體和開源軟體 OpenAirInterface 和開源容器技術 Docker 來實現廉價、節能和便攜的虛擬化及自我組織的 5G C-RAN (Cloud Radio Access Network)。平台包括分散式單元 DU (Distributed Unit)、集中單元 CU (Centralized Unit) 和核心網路 EPC (Evolved Packet Core Networks) 我們的設計比起傳統的基地台架構和未採用虛擬化的C-RAN架構在建構架設時間、參數設定時間表現上更加優秀並且擁有在平台出現錯誤或崩潰後有自我重啟、修復的能力。

Aiming to support high data rate, low latency and requirements of many scenarios, the fifth-generation (5G) mobile network should be scalable and flexible. Both Self-Organizing Network (SON) and virtualization technology are good way to achieve this issue. SON provides an automatical configuration, optimization and healing. Virtualization provides abstracting, sharing of infrastructure and radio resources. These two are keys to reach high efficiency and low latency for 5G mobile network by reducing the cost of base station deployment and maintenance. In this article, we focus on virtualization and self-organizing by using Universal Software Radio Peripheral (USRP) hardware and OpenAirInterface, an open-source software, and open-source container technology Docker to implement an inexpensive, energy-saving and portable 5G cloud radio access network (C-RAN) platform including Distributed Unit (DU), Centralized Unit (CU) and Evolved Packed Network (EPC). Our design performs well than the traditional base station architecture and C-RAN without using virtualization in building time, configuration time and the ability of self-healing after crash.

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