NSF/FDA SIR: Standardization of wireless coexistence testing of medical devices in the MBAN and ISM bands

摘要#1248111 Hazem H.Refai医疗机构和医疗设备中使用的射频(RF)无线技术的数量正在显著增加。这种现象带来了许多问题和担忧，特别是潜在的黑客攻击、欺骗和来自周围无线网络的干扰。对于那些在包括工业、科学和医疗(ISM)频段在内的免许可证射频频谱中运行的公司来说，情况尤其如此。认识到ISM设备(包括医疗设备)之间的潜在干扰，联邦通信委员会(FCC)于2012年5月17日为医用体域网络(MBAN)分配了2.36-2.4 GHz频段。这一频谱将被推广用于医疗设备，使它们能够在频繁使用的ISM频段之外操作。虽然MBAN频谱不再与ISM频谱共享带宽，但它仍然是一个相邻的信道。仔细评估MBAN设备对于避免相邻信道干扰是必要的。本项目提出了医疗器械无线共存测试协议的开发。将调查两种相辅相成的办法。第一种方法的特点是环境结合了多种无线网络和技术，例如IEEE 802.11a/b/g/n、蓝牙、Zigbee、超宽带、无绳电话和RF识别标签。然后，将使用规定的方法将医疗设备暴露在真实世界的异类无线网络中，以评估其共存情况。第二种方法将利用矢量信号发生器(VSG)来模拟无线信号。通常，VSG是完全可配置的，并且能够生成与违规无线信号在频率、调制和带宽上相同的信号。然而，VSG并没有实施“先听后说”，因此缺乏对共存的彻底评估。

Abstract#1248111Hazem H. RefaiThe number of radio-frequency (RF) wireless technologies utilized in healthcare facilities and medical devices is significantly increasing. This phenomenon brings to the forefront many issues and concerns, in particular the potential of hacking, spoofing, and interference from surrounding wireless networks. This is especially true for those operating in the license-free RF spectrum, including the Industrial, Scientific, and Medical (ISM) bands. Recognizing the potential interference among ISM devices, including those of medical use, the Federal Communication Commission (FCC) on May 17, 2012 allocated the 2.36-2.4 GHz spectrum band for Medical Body Area Network (MBAN). This spectrum will be promoted for medical devices, enabling them to operate outside the heavily used ISM bands. Although the MBAN spectrum no longer shares bandwidth with the ISM spectrum, it remains an adjacent channel. Careful evaluation of MBAN devices is necessary to avoid adjacent channel interference. This project proposes the development of wireless coexistence testing protocols for medical devices. Two complementing approaches will be investigated. The first approach will be characterized by an environment that incorporates a variety of wireless networks and technologies, e.g., IEEE 802.11a/b/g/n, Bluetooth, Zigbee, ultra wideband, cordless phones, and RF identification tags. Medical devices will then be evaluated for coexistence by exposing them to real-world, heterogeneous wireless networks using a prescribed methodology. The second approach will utilize vector signal generators (VSG) to emulate wireless signals. Typically, VSGs are fully configurable and able to generate a signal identical in frequency, modulation, and bandwidth to those of offending wireless signals. However, VSGs don?t implement ?listen-before-talk?, thus lacking thorough evaluation of coexistence.