Hybrid MAC Protocol for Full Duplex Wi-Fi Networks
Hybrid MAC Protocol for Full Duplex Wi-Fi Networks
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DOI：
10.1109/glocom.2017.8254098
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发表时间：
2017-12
期刊：
影响因子：
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通讯作者：
Jingzhi Hu;Boya Di;Tianyu Wang;Kaigui Bian;Lingyang Song
中科院分区：
文献类型：
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作者：
Jingzhi Hu;Boya Di;Tianyu Wang;Kaigui Bian;Lingyang Song
最近，带内全双工 (FD) 功能已在 Wi-Fi 范围内得到展示。然而，同时的上行链路(UL)和下行链路(DL)传输可能导致用户间干扰(IUI)。在本文中，我们提出了一种混合MAC协议，其中AP决定构建FD传输的概率。该协议还采用了第二层RTS/CTS机制，以防止构建的传输受到IUI的影响。分别优化第二重RTS/CTS机制和FD传输概率，以最大化预期频谱效率。仿真结果表明，与半双工协议相比，所提出的 MAC 协议在上行和下行吞吐量方面实现了更高的容量。
Recently, the in-band full-duplex (FD) capability has been demonstrated at Wi-Fi range. However, the simultaneous uplink (UL) and downlink (DL) transmission may lead to inter-user interference (IUI). In this paper, we propose a hybrid MAC protocol, in which the AP decides the probability of constructing FD transmission. The protocol also adopts a second fold of RTS/CTS mechanism to prevent the constructed transmission from being affected by the IUI. The second fold RTS/CTS mechanism and the probability for FD transmission are optimized respectively to maximize the expected spectrum efficiency. Simulation results show that the proposed MAC protocol achieves higher capacity compared to a half-duplex counterpart in terms of both UL and DL throughput.