- 學位論文
設計整合具流量控管機制之O-RAN SMO於5G MANO系統
Designing an O-RAN SMO with Traffic Control Mechanism in 5G MANO system
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摘要
隨著 5G 行動網路的普及化，各家電信商與企業開始發展自有的專用 5G 核心 網路。然而，各家電信商私有的基地台因設備或服務規範可能會導致裝置與設備 無法兼容的問題。因此第三代合作夥伴計劃(3GPP)與 O-RAN 聯盟(O-RAN Alliance) 提出了開放式無線電存取網路(Open Radio Access Network, O-RAN)架構， 透過將一般基地台內部所需的功能分成多個虛擬化網路功能進行部署，各家電信 商只需透過購買商用現成(COTS)的軟硬體即可依照需求自行佈建 5G 核心網路。 並且為提供使用者依照不同情境所需的服務品質(Quality of Service, QoS)選擇 5G 核網服務，3GPP 提出了網路切片架構，透過網路切片架構可提供電信業者依 照使用情境提供所需的網路功能以滿足使用者的 QoS 需求。此外，為提供 RAN 服務與 5G 核心網路切片進行介接，O-RAN 聯盟與 3GPP 合作提出了無線電存取 網路切片(RAN Slice)的架構。透過 RAN Slice 的架構，營運商可透過使用者裝置 (User Equipment, UE)所需的 QoS 需求，提供適合的 RAN 進行連線。而為管理 RAN Slice，O-RAN 聯盟提出 O-RAN 服務管理與調度(Service Management and Orchestration, SMO)架構，並提出可透過串接 5G MANO 架構管理與調度部署的 RAN Slice。而 SMO 除了管理 O-RAN 網路切片外，O-RAN 聯盟規範中提出 SMO 可根據其當前部署的 RAN 切片的服務型態(Service Type)進行網路切片的 QoS 控 制。然而現有的開源 SMO 系統雖可部署與管理 O-RAN 網路切片，但卻無整合 5G MANO 架構進行端到端網路切片的管理，因此 RAN 切片無法根據核網切片的 服務型態進行配置。根據以上提出的問題，本研究希望遵循 3GPP 與 O-RAN 聯 盟的規範，設計一 O-RAN SMO Traffice Control 機制, 用於整合 5G MANO 的系統 以提供端到端網路切片的管理及 QoS 控制。
並列摘要
As 5G mobile networks become more widespread, telecom operators and enterprises are developing their own dedicated 5G core networks. However, compatibility issues may arise due to proprietary base stations from different vendors, leading to device and equipment incompatibility. To address this, the Third Generation Partnership Project (3GPP) and the O-RAN Alliance propose an Open Radio Access Network (O-RAN) architecture.In the O-RAN framework, internal functions of general base stations are disaggregated into multiple virtualized network functions, allowing telecom operators to deploy their 5G core networks based on their specific needs by purchasing commercial off-the-shelf (COTS) hardware and software. Additionally, to provide users with the required Quality of Service (QoS) in different scenarios, 3GPP has proposed a network slicing architecture.Furthermore, to integrate RAN services with 5G core network slices, the O-RAN Alliance and 3GPP have collaborated to propose the Radio Access Network Slicing (RAN Slice) architecture. Through the RAN Slice architecture, operators can select the appropriate RAN Slice based on the QoS requirements of user equipment (UE), reducing unnecessary handovers during communication and enhancing the speed of communication between users and the 5G core network.To manage RAN Slices, the O-RAN Alliance has proposed the Service Management and Orchestration (SMO) framework, which can be integrated with the 5G MANO architecture to manage and orchestrate the deployment of RAN Slices. Besides managing O-RAN network slices, the O-RAN Alliance’s SMO framework also includes QoS control based on the service type of the currently deployed RAN slices. However, existing open-source SMO systems, while capable of deploying and managing O-RAN network slices, do not integrate the 5G MANO architecture for managing end-to-end network slices. This limitation prevents the configuration of RAN slices based on the service type of core network slices, thus hindering end-to-end QoS control for 5G network slices.To address these issues, this research aims to design a system that integrates 5G MANO and ORAN SMO Traffic Control Mechanism according to 3GPP and O-RAN Alliance specifications, to provide end-to-end network slice management and QoS control.
參考文獻
[1] 3GPP, “Study on new radio access technology: Radio access architecture and
interfaces”. TR 38.801 version 14.0.0 Release 14, April 2017.
[2] Guangyi Liu, Yuhong Huang, Zhuo Chen, Liang Liu, Qixing Wang, and Na Li,
"5G Deployment: Standalone vs. Non-Standalone from the Operator Perspective",
IEEE Communications Magazine, November 2020.