研究生: |
莊邵羽 Shao-Yu Chuang |
---|---|
論文名稱: |
應用於WiMAX網路的上傳之完全輪詢機制的輪詢法 Fully Polling Scheme For Uplink Of WiMAX Network |
指導教授: |
陳漢宗
Hann-Tzong Chern |
口試委員: |
黎碧煌
Bih-Hwang Lee 王蒼容 Chun-Long Wang |
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: | 2016 |
畢業學年度: | 104 |
語文別: | 中文 |
論文頁數: | 56 |
中文關鍵詞: | IEEE 802.16 、WiMAX 、輪詢 |
外文關鍵詞: | IEEE 802.16, WiMAX, Polling |
相關次數: | 點閱:391 下載:4 |
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IEEE 802.16標準為一種無線都會型網路(Wireless Metropolitan Access Network; WMAN),具有速率高、成本低與傳輸距離較遠等優點,且擁有服務品質(Quality of Service; QoS),能夠保障各種多媒體服務流。在IEEE 802.16中,根據服務的品質,資料流被分為五種類別。然而,標準中並未明確定義上下行頻寬的排程機制。因此,設計一個排程演算法來滿足每種類別的服務品質,是一個值得探討的議題。
在全球互通微波存取(Worldwide Interoperability for Microwave Access; WiMAX)網路中,用戶端工作站(Subscriber Station; SS)必需先等收到基地台的輪詢之後,再向基地台(Base Station; BS)傳送頻寬需求,待收到分配的頻寬通知之後,才能上傳資料。本論文提出的完全輪詢機制輪詢法(Fully Polling Scheme; FPS),是一種充分利用輪詢機會的演算法。在此一上行排程演算法中,在一個訊框內,如果沒有任何工作站輪到輪詢(Polling),基地台就會對所有工作站進行輪詢。模擬結果顯示,此演算法能夠更有效率的利用頻寬。
IEEE 802.16 is a standard for Wireless Metropolitan Area Network (WMAN). It has the advantages of low cost, high speed and long distance communication. To be worked for different multimedia applications, it provides Quality of Service (QoS). The service flows are categorized into five classes in IEEE 802.16. However, the scheduling schemes are not clearly defined for uplink and downlink in IEEE802.16. Therefore, it is a good issue to explore the designing of scheduling algorithm to meet the QoS requirement of all classes.
In worldwide interoperability for microwave access(WiMAX), Subscriber Station (SS) has to receive the polling notification from Base Station (BS) before it can send bandwidth request to the BS. After SS receives the bandwidth assignment from BS, it can begin to send its data. In this thesis, we propose an uplink scheduling algorithm named Fully Polling Scheme (FPS). In this algorithm, if BS doesn’t have to poll any SS according to the polling intervals in a frame, it will poll all SSs. The result of this algorithm is as good as predicted.
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