利用碰撞來避免全雙工之間的用戶間的干擾問題

An Interference Detection Full-Duplex MAC Protocol with Frame Testing for Next Generation WLANs

宋狄峻(Ti-Chun Sung)

指導教授 ： 石貴平

淡江大學/工學院/資訊工程學系資訊網路與多媒體碩士班/碩士(2018年)

https://doi.org/10.6846/TKU.2018.00215

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，全雙工所造成的節點間干擾問題，提出有效的解決策略。近年來，隨著無線區域網路的快速發展，為了因應大量裝置的傳輸需求，許多研究提出可以在相同頻道中同時發送與接收資料的全雙工技術。雖然近年來隨著技術的進步，全雙工的自我干擾問題可以被有效地解決，但仍存在節點間的干擾問題。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干擾問題。此機制藉由發送封包的方式，來檢測是否有節點間的干擾問題。此機制可以有效的避免干擾所產生的接收失敗問題，藉此達到全雙工效能的提升。最後，通過模擬實驗結果，採用我們所提出的機制與傳統全雙工相比，效能平均提高了約20%

關鍵字

碰撞避免 ； 同頻全雙工 ； IEEE 802.11 ； 節點間的干擾 ； WLANs

並列摘要

This paper proposes an effective solution strategy for inter-node interference to the performance degradation caused by In-Band Full-Duplex Wireless LANs (IBFD WLANs). In recent years, the rapid development of wireless networks, in order to cope with the transmission requirements of a large number of devices, many studies have proposed full-duplex technology that can simultaneously transmit and receive data in the same channel. Although in recent years, the advancement of technology, the problem of full-duplex self-interference can be effectively solved, but there is still a problem of interference between nodes. Therefore, this paper proposes a new media access control mechanism to solve the problem of internode interference caused by full duplex. This mechanism detects whether there is interference between nodes by sending a packet. This mechanism can effectively avoid the reception failure problem caused by interference, thereby achieving the improvement of full-duplex performance. Finally, the simulation results, the performance of our proposed mechanism is improved by about 20% on average compared to the traditional full-duplex.

並列關鍵字

Avoid Collision ； In-Band Full Duplex ； IEEE 802.11 ； Inter-node Interference ； WLANs

參考文獻

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