This letter indicates the critical need for prioritized multi-tenant quality-of-service (QoS) management by emerging mobile edge systems, particularly for high-throughput beyond fifth-generation networks. Existing traffic engineering tools utilize complex functions baked into closed, proprietary infrastructures, largely limiting design flexibility, scalability, and adaptiveness. Hence, this study introduces a software-defined networking (SDN)-based dynamic QoS provisioning scheme that prioritizes multi-tenant network traffic while focusing on the base station-edge cloud scenario. The designed scheme first separates control and data planes and enables traffic management automation using SDN programmability. It then implements dynamic QoS management via the SDN-OpenFlow protocol, which ensures ample bandwidth for multiple priority flows and efficiently manages the remaining bandwidth for non-priority traffic. Empirical experiments are conducted with a Mininet network emulator and an OpenDayLight controller. Performance evaluation validates the proposed scheme's effectiveness in meeting multi-tenant QoS criteria, offering a robust solution for traffic prioritization in SDN-based edge networks.

翻译：本文指出了新兴移动边缘系统对优先级多租户服务质量（QoS）管理的迫切需求，特别是面向超五代网络高吞吐场景。现有流量工程工具多依托封闭式专有基础设施中内置的复杂功能，严重限制了设计灵活性、可扩展性与自适应性。为此，本研究提出了一种基于软件定义网络（SDN）的动态QoS保障方案，在基站-边缘云场景下优先处理多租户网络流量。该方案首先通过分离控制平面与数据平面，利用SDN可编程性实现流量管理自动化；进而借助SDN-OpenFlow协议实施动态QoS管控，为多优先级流量保障充足带宽，并高效管理剩余带宽用于非优先级流量传输。实验采用Mininet网络仿真器与OpenDayLight控制器进行实证评估。性能验证结果表明，该方案能有效满足多租户QoS指标，为SDN边缘网络中的流量优先级调度提供了稳健解决方案。