本論文針對同頻全雙工無線區域網路(In-Band Full Duplex Wireless LANs, IBFD WLANs)中增加全雙工傳輸的效能，提出有效的解決策略。隨著目前實體層的進步，實現全雙工的可能性相對提升。在本論文中提出當無線區域網路的所有設備都擁有全雙工能力時，能讓每一個接收端也擁有傳輸機會，達到能夠同時串流傳輸三筆以上資料的串流式傳輸之全雙工媒體存取控制協定SLFD (Stream-Like Full-Duplex MAC Protocol)。然而，當同時的傳輸越多時，將導致無線區域網路的干擾發生機率提高，因此本論文分析傳輸能量對周圍節點干擾影響之嚴重性，通過使用SIR (Signal to Interference Ratio)值與RSSI (Received Signal Strength Indication)值來判斷是否能進行串流式傳輸，並利用捕獲效應(Capture Effect)挑選適當的傳輸能量，降低用戶間干擾問題。最後本論文使用OMNET++模擬協定的運作情況，通過模擬實驗結果，SLFD與相關論文相比，效能平均提高了許多。

This paper proposes an effective scheme to improve performance of the in-band full-duplex wireless LAN (IBFD WLAN). With the advancement of the physical layer technology, to realize the full duplex transmission is possible. Based on the assumption that all STAs are capable of transmitting and receiving simultaneously, the paper proposed a scheme, named SLFD (Stream-Like Full-Duplex) MAC protocol, to enable the receiver start to transmit while it is receiving from the sender. However, when the number of transmission pairs increases, the interference among STAs is increased as well. As a result, the paper analyzes the interference impact of transmission power on sur-rounding STAs. By means of SIR (Signal to Interference Ratio) and RSSI (Received Signal Strength Indication), the receiver can decide whether to start another transmission or not. Through capture effect, the receiver can derive an appropriate transmission power to transmit in order not to cause interference to the current transmissions. The simulation is conducted by OMNET++. Simulation results show that the proposed scheme, SLFD, outperforms the related research protocol in terms of network throughput.

目錄
第1章 緒論	1
1.1 前言	1
1.2 研究動機	2
1.3研究目的	4
1.4論文架構	4
第2章 背景知識	5
2.1全雙工基本介紹	5
2.2捕獲效應介紹	6
2.3相關文獻	8
第3章 預備知識	12
3.1問題陳述	12
3.2相關假設	16
第4章串流式傳輸之全雙工媒體存取控制協定	17
4.1初步分析	17
4.2 串流式全雙工傳輸控制協定	18
4.3串流式全雙工傳輸控制協定流程圖	25
第5章效能分析	28
5.1模擬場景與參數	28
5.2實驗結果	29
第6章結論	31
參考文獻	32
附錄A	35

 
圖目錄
Figure 1、四手交握機制	3
Figure 2、非對稱全雙工傳輸模式	5
Figure 3、對稱傳輸全雙工模式	6
Figure 4、第一筆封包捕獲	7
Figure 5、第二筆封包捕獲	8
Figure 6、RTS/FCTS協定–對稱式傳輸	9
Figure 7、RTS/FCTS協定–非對稱式傳輸	9
Figure 8、FuPlex全雙工-發送PRTS	10
Figure 9、FuPlex全雙工 – 計算SINR值	10
Figure 10、STA全雙工的MAC協定	11
Figure 11、PR/IT全雙工模式	12
Figure 12、PT/IR全雙工模式	13
Figure 13、IR/IT全雙工模式	13
Figure 14、二次傳輸確認問題	14
Figure 15、連續發送端碰撞問題	15
Figure 16、假設場景	18
Figure 17、串流式全雙工傳輸控制協定-S-CTS流程	19
Figure 18、串流式全雙工傳輸控制協定-A-CTS流程	20
Figure 19、串流式全雙工傳輸控制協定-Capture effect	21
Figure 20、A-CTS訊框格式	22
Figure 21、串流式全雙工傳輸控制協定-無法額外傳輸	23
Figure 22、串流式全雙工傳輸控制協定-成功發送RTS	24
Figure 23、串流式全雙工-發送F-RTS	25
Figure 24、串流式全雙工-接收F-RTS/A-CTS	26
Figure 25、串流式全雙工-接收F-RTS	27
Figure 26、傳輸效能分析	29
Figure 27、封包遺失率分析	30

 
表目錄

表1、模擬參數	28

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