As various wireless devices share the same frequencies in the unlicensed 2.4-GHz industrial scientific medical band, frequency sharing has become a challenging issue in the heterogeneous network. Many Wi-Fi applications increase network traffic and lead to the significant performance loss of other protocol devices including ZigBee for critical missions (e.g., medical devices) in the same band. In this paper, we propose a coexistence solution of the guide busy tone (GBT), providing reliable communications to the ZigBee network under Wi-Fi interference, and present fairness criteria in the tradeoff relation between Wi-Fi and ZigBee with GBT. The proposed GBT design, consisting of a GBT signaler and a busy tone canceller, reserves a channel for ZigBee through the full-duplex technique under heavy Wi-Fi traffic. Our experimental evaluation shows that the packet delivery ratio of the ZigBee network can be improved up to nearly 100% under the saturated Wi-Fi traffic by using GBT, which is scalable for the multinode case as well.

中文翻译：

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基于全双工的 IEEE 802.15.4 和 IEEE 802.11 的共存


由于各种无线设备在未经许可的2.4GHz工业科学医疗频段共享相同的频率，因此频率共享已成为异构网络中的一个具有挑战性的问题。许多 Wi-Fi 应用会增加网络流量，并导致同一频段内其他协议设备（包括用于关键任务的 ZigBee（例如医疗设备））的显着性能损失。在本文中，我们提出了引导忙音（GBT）的共存解决方案，在 Wi-Fi 干扰下为 ZigBee 网络提供可靠的通信，并提出了 Wi-Fi 和 ZigBee 与 GBT 之间权衡关系的公平标准。所提出的 GBT 设计由 GBT 信令器和忙音消除器组成，在 Wi-Fi 流量大的情况下通过全双工技术为 ZigBee 保留一个通道。我们的实验评估表明，在饱和 Wi-Fi 流量下，使用 GBT 可以将 ZigBee 网络的数据包传递率提高到接近 100%，并且对于多节点情况也是可扩展的。