IEEE 802.11 無線區域網路下之公平高效全雙工媒體存取控制協定設計

A Fair and Efficient Full Duplex MAC Protocol for IEEE 802.11 WLANs

陳羿如(I-Ju Chen)

指導教授 ： 石貴平

淡江大學/工學院/資訊工程學系碩士班/碩士(2019年)

https://doi.org/10.6846/TKU.2019.00467

摘要

本論文針對同頻全雙工無線區域網路(In-Band Full Duplex Wireless LANs, IBFD WLANs)中，基於現有的MAC機制使用全雙工會造成節點間競爭的不公平問題，提出有效的解決策略。在這個科技迅速發展的時代，使用者爆炸性的增長，而為了滿足使用者對於無線區域網路需求，便著手開始研究如何為無線區域網路帶來更大的效益，而許多學者採用全雙工技術來實現提升網路效能。隨著科技的進步，全雙工已經可以克服自我干擾問題，但是基於現有的設備及機制套用在全雙工上，會帶來節點間競爭不公平問題。因此本論文提出一種新的媒體存取控制機制，用於解決因全雙工所造成的節點間競爭不公平問題。此機制結合捕獲效應讓節點知道現在環境正在做全雙工，而不等待EIFS持續時間，來有效解決競爭不公平之問題。根據模擬結果顯示此機制可以有效解決競爭不公平之問題，藉此達到全雙工競爭平衡，也提升整體網路的效能。

關鍵字

公平性 ； 同頻全雙工 ； IEEE802.11 ； WLANs

並列摘要

This paper proposes an effective solution to the networks unfairness caused by transmission in In-Band Full-Duplex Wireless LANs (IBFD WLANs). With the progress of science and technology, full duplex has been able to overcome the problem of self-interference, but based on the existing equipment and mechanisms used in the whole duplex, will bring about unfair contention be-tween nodes. Therefore, this paper proposes a new media access control mechanism to solve the problem of unfair contention between nodes caused by full duplex. This mechanism, combined with the capture effect, lets the node know that the environment is doing full duplex without waiting for the EIFS duration to effectively ad-dress the problem of unfair contention. This mechanism can effectively solve the problem of unfair contention, so as to achieve the balance of full duplex contention and improve the throughput of the overall network.

並列關鍵字

Fairness ； In-Band Full Duplex ； IEEE802.11 ； WLANs

參考文獻

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