On Exploiting Concurrent Transmissions Through Discernible Interference Cancellation
On Exploiting Concurrent Transmissions Through Discernible Interference Cancellation
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DOI：
10.1109/tvt.2018.2853716
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发表时间：
2018-07
影响因子：
6.8
通讯作者：
Junmei Yao;W. Lou;Lu Wang;Kaishun Wu
中科院分区：
文献类型：
--
作者：
Junmei Yao;W. Lou;Lu Wang;Kaishun Wu
本文介绍了 ICMR 的设计、可行性评估和性能验证，ICMR 是一种新型跨层协议，可以最大限度地提高无线网络中的并发传输并避免数据帧干扰，与 802.11 标准和其他最先进的协议相比，实现更高的吞吐量。对 802.11 标准的观察表明，正在进行的链路的发送器和接收器周围的节点浪费了并发传输机会，从而极大地降低了网络吞吐量。提出了最先进的协议 IRMA，通过利用发送器侧的并发传输来提高网络吞吐量。在本文中，新的 ICMR 协议侧重于接收端，通过利用可辨别的干扰消除（一种物理层机制，可以在与控制帧冲突时成功检测数据帧）来进一步提高网络吞吐量。我们从发送器的发送机会和接收器的接收机会来分析一条链路的并发发送机会，然后制定机会并进行理论分析，表明ICMR将比其他协议具有更高的机会。通过基于USRP2的实验结果证明了可辨别干扰消除机制的可行性，并通过基于ns-2的仿真证实了ICMR相对于其他协议的吞吐量改进。
This paper represents the design, feasibility evaluation, and performance validation of ICMR, a novel cross layer protocol that can maximize concurrent transmissions and avoid data frame interference in wireless networks, achieving a higher throughput comparing with the 802.11 standard and other state-of-the-art protocols. Observations on the 802.11 standard reveal that nodes around both the transmitter and receiver of the ongoing link waste concurrent transmission opportunities, degrading the network throughput dramatically. A state-of-the-art protocol IRMA is proposed to improve the network throughput through exploiting concurrent transmissions at the transmitter side. In this paper, a new ICMR protocol focuses on the receiver side to further improve the network throughput, through exploiting discernible interference cancellation, a physical layer mechanism that can successfully detect data frames when collided by control frames. We analyze the concurrent transmission opportunities of one link from the transmitter's transmission opportunities and the receiver's reception opportunities, then formulate the opportunities and give theoretical analysis to indicate that ICMR will have a higher opportunity over other protocols. Feasibility of the discernible interference cancellation mechanism is demonstrated through experiment results based on USRP2, and the throughput improvement of ICMR comparing with the other protocols is confirmed through simulations based on ns-2.