IEEE802.11be多鏈路操作系統上的平均數據封包和重排序延遲評估

Abstract

為了處理更高密度，高帶寬高吞吐量，低延遲和可靠性的新應用，在激增的無線區域網路環境，IEEE於2018年起草IEEE802.11be(Extreme High Throughout),期望於2024年成工業標準，各IC廠家也計畫於2022年提供第一代晶片。在802.11be裡，媒體存取控制（MAC）層引入多鏈路(Multi-link)技術, 多個Wi-Fi設備進行多鏈路數據聚合，透過跨多AP分配數據封包，以提高峰值吞吐量並減少延遲，增加信道和頻譜使用量(2.4 / 5/6 GHz)和增強傳輸數據封包的可靠性。但該應用程序會產生數據包負載平衡和重新排序平衡的問題。 本論文針對此關鍵問題，利用拉格朗日鬆弛法，和MM1等候理論模型來分析數據包排隊延遲，並開發一個重新排序模型，以了解重新排序平衡問題的影響，分析總體延遲而提出而提出多鏈路流量（Multi-link） 的最佳到達速率比率，減少總延遲，也提出最大到達率，以達到最大化鏈路流量(Multi-Link)系統吞吐量。

In order to handle new applications with higher density, high bandwidth, high throughput, low latency and reliability, in the rapidly increasing wireless local area network environment, IEEE drafted IEEE802.11be (Extreme High Throughout) in 2018 and expects to become an industry in 2024 Standards. IC manufacturers also plan to provide the first generation of chips in 2022. In 802.11be, the media access control (MAC) layer introduces Multi-link technology. Multiple Wi-Fi devices perform multi-link data aggregation and distribute data packets across multiple APs to improve peak throughput, reduce the delay, increase the channel and spectrum usage (2.4 / 5/6 GHz) and enhance the reliability of transmitting data packets. However, the application will have packet load balancing and reordering balancing problems. In response to this key issue, this paper uses Lagrangian minimization and MM1 queuing models to analyze the packet queuing delay, and develops a resequencing model, to understand the impact of the resequencing balance problem, analyzes the overall delay and proposes multi-link traffic (Multi -link) to reduce the total delay, and also propose the maximum arrival rate to maximize the throughput of the Multi-Link system.