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| 研究生： |
于莉平 Li-Ping Yu |
|---|---|
| 論文名稱： |
IEEE 802.11ax上行正交分頻多重接取隨機存取之封包預留機制效能分析 Performance Analysis of Packet Reservation Mechanism for IEEE 802.11ax Uplink OFDMA-based Random Access (UORA) |
| 指導教授： |
鄭瑞光
Ray-Guang Cheng |
| 口試委員: |
許獻聰
Shiann-Tsong Sheu 黎碧煌 Bih-Hwang Lee 黃琴雅 Chin-Ya Huang 鄭瑞光 Ray-Guang Cheng |
| 學位類別： |
碩士 Master |
| 系所名稱： |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
| 論文出版年： | 2020 |
| 畢業學年度： | 109 |
| 語文別： | 英文 |
| 論文頁數： | 74 |
| 中文關鍵詞： | IEEE 802.11ax 、基於上行正交分頻多重接取的隨機存取機制 、多通道時槽阿羅哈協議 、封包預留多路訪問 |
| 外文關鍵詞： | IEEE 802.11ax, uplink OFDMA-based random access mechanism, multi-channel slotted ALOHA protocol, Packet Reservation Multiple Access |
| 相關次數： | 點閱：252 下載：1 |
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IEEE 802.11ax定義了基於上行正交分頻多重接取的隨機存取（UORA）機制，使多個網路中的使用者（Station）遵循多通道時槽阿羅哈協議，可同時傳輸其封包資料。現有的UORA機制研究僅考慮了一個待傳輸的封包和固定數量的RA-RU。在本論文中，我們採用了封包預留多路訪問 (PRMA) 機制以減少競爭的次數，並考慮變動數量的RA-RU。本論文提出一基於多通道時槽阿羅哈協議的數學分析模型，可用於研究突發抵達情況下具有封包預留機制之UORA的效能，其效能指標包含訪問成功機率、失敗機率、平均訪問延遲、傳輸的累積分佈函數（CDF）以及成功傳輸的封包數量等。並透過模擬結果驗證該數學分析模型的準確性。
The IEEE 802.11ax standard defines an uplink OFDMA-based random access (UORA) scheme to enable multiple stations to simultaneously transmit packets following a multi-channel slotted ALOHA protocol. Existing studies of UORA only considered one pending packet and a fixed amount of resource units for random access (RA-RUs). In this paper, we apply the Packet Reservation Multiple Access (PRMA) mechanism to reduce the number of contentions and consider a dynamic amount of RA-RUs. We present an analytical model that can be used to investigate the performance of the UORA scheme with the packet reservation mechanism under bursty arrivals. We derive the following performance metrics of access success probability, failure probability, average access delay, cumulative distribution function (CDF) of the number of RA-RU transmissions, and the total number of successful packets. The simulation results verify the accuracy of the proposed model.
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