IEEE 802.11be標準的目的是在有大量站點（STA）的無線網絡中實現極高的吞吐量（EHT）和低延遲。本研究論文提出了一個分析模型，研究在基於OFDMA的上行隨機接入（UORA）系統中，關聯和非關聯STA的頻域和時域隨機接入資源單元（RA-RU）分配方案的瞬態性能。在這項研究中，我們評估了總體接入成功概率和總體平均接入延遲作為性能指標。這些指標為資源分配方案的效率和有效性提供了有價值的見解。此外，我們根據這些指標定義了一個效用函數來優化分配過程。利用所提出的分析模型，我們可以彈性地選擇分配方案，並確定了在不同流量負荷下分配給兩類STA的RU比例。我們的研究結果發現在頻域上的資源單位較不充足時，時域分配方案普遍優於頻域分配方；而當頻域上的資源較多時，會偏好使用頻域分配方案。

The IEEE 802.11be standard aims to achieve extremely high throughput (EHT) and low delays in wireless networks with massive stations (STAs). This research paper presents an analytical model to investigate the transient performance of frequency domain and time-domain random access resource unit (RA-RU) allocation schemes for both associated and non-associated STAs in uplink OFDMA-based random access (UORA) system. In this study, we evaluate the overall access success probability and overall average access delay as performance metrics. These metrics provide valuable insights into the efficiency and effectiveness of the resource allocation schemes. Furthermore, we define a utility function based on these metrics to optimize the allocation process. Using the proposed analytical model, have the flexibility to change the allocation schemes in time-domain allocation(TDA) and frequency-domain allocation(FDA) and determine the ratio of RUs allocated to the two types of STAs under different traffic loads. The TDA scheme typically outperforms the FDA scheme with fewer RUs in the frequency domain. Conversely, the preference shifts towards FDA when higher RUs in frequency domain are involved.

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