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    System and method for triggering an alarm during a sensor jamming attack
    1.
    发明授权
    System and method for triggering an alarm during a sensor jamming attack 有权

    公开(公告)号：US11990992B2

    公开(公告)日：2024-05-21

    申请号：US17983492

    申请日：2022-11-09

    Applicant: Alarm.com Incorporated

    Inventor： Stephen Scott Trundle ,  Alexander Lawrence Reeder ,  Charles Richard Alpert ,  Noah Robert Weingart

    IPC: H04K3/00 ,  G08B25/10 ,  H04B11/00 ,  G08B13/00

    CPC classification number: H04K3/94 ,  G08B25/10 ,  H04K3/224 ,  H04K3/226 ,  H04K3/45 ,  G08B13/00

    Abstract: Methods, systems, and apparatus, including computer programs encoded on a storage device, for triggering an alarm during a sensor jamming attack. In one aspect, a monitoring system sensor unit is disclosed that includes a sensor, a communication unit configured to communicate with a monitoring system using a range of frequencies, and a jamming detection unit. The jamming detection unit may include a processor and a computer storage media storing instructions that, when executed by the processor, cause the processor to perform operations. The operations include detecting a sensor jamming event, selecting a different form of communication other than the range of radio frequencies for the communication unit to communicate with the monitoring system, and providing, to the communication unit, an instruction to communicate with the monitoring system using the form of communication, wherein the communication unit may communicate, to the monitoring system using the form of communication, the sensor data.

    BLOCKING JAMMING SIGNALS INTENDED TO DISRUPT COMMUNICATIONS
    3.
    发明申请
    BLOCKING JAMMING SIGNALS INTENDED TO DISRUPT COMMUNICATIONS 审中-公开

    公开(公告)号：US20170244511A1

    公开(公告)日：2017-08-24

    申请号：US15048665

    申请日：2016-02-19

    Applicant: THE BOEING COMPANY

    Inventor： Jeffrey H. HUNT

    IPC: H04K3/00

    CPC classification number: H04K3/224 ,  H04K3/68

    Abstract: Jamming systems uses wireless signals (e.g., radio waves) to deliberately prevent a target from accurately receiving desired wireless signals. The examples herein disclose an anti-jamming system that mitigates an effect that jamming signals have on a radio receiver. To do so, the anti-jamming system generates a plasma shield in a region of space between the target and the jamming system. Plasma is opaque to electromagnetic energy meaning that radio signals, lasers, microwave energy, and the like are unable to pass through the plasma, and instead, are absorbed by the plasma. As such, the jamming signals emitted by the jamming system are absorbed by the plasma shield and do not interfere with the target's radio receiver.

    Method for detecting eavesdroppers in a wireless communication system
    4.
    发明授权
    Method for detecting eavesdroppers in a wireless communication system 有权
    一种用于在无线通信系统中检测窃听者的方法

    公开(公告)号：US09380458B2

    公开(公告)日：2016-06-28

    申请号：US13956009

    申请日：2013-07-31

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Fredrik Rusek

    IPC: H04W12/02 ,  H04W24/08 ,  H04W12/12

    CPC classification number: H04W12/02 ,  H04K3/22 ,  H04K3/224 ,  H04K3/65 ,  H04K3/822 ,  H04K2203/16 ,  H04K2203/36 ,  H04W12/12

    Abstract: The present invention relates to a method in a wireless communication system for determining whether an active eavesdropper is interfering in transmissions on a radio channel from a transmitter to a receiver, the method comprising the steps of: estimating, by said transmitter, a first effective channel gain of said radio channel at said receiver; estimating, by said receiver, a second effective channel gain of said radio channel at said receiver; and determining whether an active eavesdropper is interfering in the transmissions by comparing said first and second effective channel gains. Furthermore, the invention also relates to a method in a receiver, a receiver device, a computer program, and a computer program product thereof.

    Abstract translation: 本发明涉及无线通信系统中的方法，用于确定主动窃听者是否正在干扰从发射机到接收机的无线电信道上的传输，所述方法包括以下步骤：由所述发射机估计第一有效信道 在所述接收机处的所述无线电信道的增益; 由所述接收机估计所述接收机处的所述无线电信道的第二有效信道增益; 以及通过比较所述第一和第二有效信道增益来确定主动窃听者是否干扰所述传输。 此外，本发明还涉及接收机，接收机设备，计算机程序及其计算机程序产品中的方法。

    Mobile device prevention of contactless card attacks
    5.
    发明授权
    Mobile device prevention of contactless card attacks 有权
    移动设备防止非接触式卡攻击

    公开(公告)号：US09379841B2

    公开(公告)日：2016-06-28

    申请号：US14431034

    申请日：2014-11-17

    Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC

    Inventor： Kevin Fine ,  Ezekiel Kruglick

    IPC: H04K3/00 ,  H04B5/00 ,  H04B17/30 ,  H04W88/02

    CPC classification number: H04K3/86 ,  H04B5/0031 ,  H04B17/30 ,  H04K3/224 ,  H04W4/80 ,  H04W12/12

    Abstract: Technologies related to mobile device prevention of contactless card attacks are generally described. In some examples, a mobile computing device may monitor for electromagnetic signals at frequencies used for short range communications with contactless cards. Detection of such electromagnetic signals by the mobile computing device may indicate an attack attempt on a proximal contactless card. In response to detection of such electromagnetic signals, the mobile computing device may automatically generate a disruption signal effective to disrupt communications between contactless card readers and any proximal contactless cards, to thereby foil the attack before sensitive contactless card data is stolen.

    Abstract translation: 通常描述与非接触式卡攻击的移动设备防止相关的技术。 在一些示例中，移动计算设备可以在用于与非接触式卡进行短距离通信的频率下监视电磁信号。 由移动计算设备检测这样的电磁信号可以指示对近侧非接触式卡的攻击尝试。 响应于这种电磁信号的检测，移动计算设备可以自动产生有效地中断非接触式读卡器与任何近侧非接触式卡之间的通信的中断信号，从而在敏感的非接触式卡数据被盗之前消除攻击。

    Full duplex radio transceiver with remote radar detection
    7.
    发明授权
    Full duplex radio transceiver with remote radar detection 有权
    全双工无线电收发器，具有远程雷达检测功能

    公开(公告)号：US09345036B2

    公开(公告)日：2016-05-17

    申请号：US14608024

    申请日：2015-01-28

    Applicant: CBF Networks, Inc.

    Inventor： Jeffrey Fischer ,  Kishore Gandham ,  Kevin J. Negus

    IPC: H04W72/00 ,  H04W72/08 ,  H01Q1/24 ,  H01Q21/24 ,  H01Q21/29 ,  H01Q25/00 ,  H04W16/14 ,  H04B7/04 ,  H04K3/00 ,  H04W52/36

    CPC classification number: H04W72/082 ,  H01Q1/246 ,  H01Q21/24 ,  H01Q21/29 ,  H01Q25/00 ,  H01Q25/005 ,  H04B7/04 ,  H04K3/224 ,  H04K3/226 ,  H04K3/28 ,  H04K3/822 ,  H04K2203/32 ,  H04K2203/36 ,  H04W16/14 ,  H04W52/367

    Abstract: A radar detector is used with a radio link, the radio link characterized by high duty factor operation of a radio transmitter. The radar detector is located a sufficient distance from the radio transmitter that the radar detector is not overwhelmed by the radio transmission signal in that channel and can detect sufficiently low level radar signals to ascertain potential radio interference at the radar from said radio transmitter. The results of the radar detection are communicated to the transmitter in a way that impacts the transmitter's use of the sensed channel. This communication can occur reactively when a radar detection is achieved (the absence of which indicates no radar has been detected) and/or can be a periodic or event-driven indication that the channel is available for operation (the information expiring if the result is not refreshed).

    Abstract translation: 雷达检测器与无线电链路一起使用，无线电链路以无线电发射机的高占空比操作为特征。 该雷达探测器位于离无线电发射机足够的距离处，雷达探测器不被该信道中的无线电传输信号所淹没，并且可以检测足够低的雷达信号，从而确定来自所述无线电发射机的雷达的潜在无线电干扰。 雷达检测的结果以影响发射机对感测信道的使用的方式传送给发射机。 当实现雷达检测时（其中不存在没有检测到雷达）和/或可以是信道可用于操作的周期性或事件驱动指示，则该通信可以反应地发生（如果结果为 不刷新）。

    Simultaneous use of multiple radio frequency channels
    8.
    发明授权
    Simultaneous use of multiple radio frequency channels 有权

    公开(公告)号：US09246542B1

    公开(公告)日：2016-01-26

    申请号：US14047512

    申请日：2013-10-07

    Applicant: Google Inc.

    Inventor： E. Daniel McCloskey ,  C. Philip Gossett

    IPC: H04B1/7115 ,  H04B1/7103

    CPC classification number: H04B1/707 ,  H04B1/7103 ,  H04K1/04 ,  H04K1/10 ,  H04K3/224

    Abstract: In general, the subject matter described in this specification can be embodied in methods, systems, and program products for identifying data that is designated for wireless transmission to a remote computing device. A digital signal that encodes the data for transmission across a band of radio frequency channels is generated. Multiple radio frequency channels in the band that are available are determined. The digital signal is filtered to substantially reduce a power level of the digital signal at frequencies that correspond to channels in the band that have not been determined to be available. The filtered digital signal is converted to an analog signal. The analog signal is provided to an analog transmitter that isolates the band of channels to generate an isolated analog signal and that wirelessly transmits the isolated analog signal over the multiple available channels using one or more antennas.

    MANAGING RADAR DETECTION IN WIRELESS NETWORK THAT USES FREQUENCY-DIVISION DUPLEXING
    9.
    发明申请
    MANAGING RADAR DETECTION IN WIRELESS NETWORK THAT USES FREQUENCY-DIVISION DUPLEXING 有权
    管理使用频分双工的无线网络中的雷达检测

    公开(公告)号：US20150063147A1

    公开(公告)日：2015-03-05

    申请号：US14473454

    申请日：2014-08-29

    Applicant: QUALCOMM Incorporated

    Inventor： Ahmed Kamel SADEK ,  Mehmet YAVUZ

    IPC: H04L1/00 ,  H04W24/08 ,  H04J1/16

    CPC classification number: H04W16/14 ,  G01S7/021 ,  H04B1/50 ,  H04J1/16 ,  H04K3/224 ,  H04K3/28 ,  H04K3/822 ,  H04K2203/16 ,  H04K2203/18 ,  H04K2203/36 ,  H04L1/0007 ,  H04L5/1469 ,  H04W24/08 ,  H04W48/02 ,  H04W52/244 ,  H04W72/1215 ,  H04W74/00 ,  H04W84/045

    Abstract: An apparatus, configured to communicate with other apparatuses in a wireless network and operating in a frequency-division duplexing mode, can be caused to refrain from transmitting during a number of subframes of a frame of a downlink frequency band prior to a detection of a radar transmission, can be caused to send a first signal, related to monitoring for the radar transmission, to a second apparatus, and can be caused to change the number of the subframes of the frame of the downlink frequency band in response to an event that can be an increase or a decrease in a load of the apparatus or the detection of the radar transmission. Optionally, placement of the subframes within the frame of the downlink frequency band can correspond to placement of subframes that are designated for an uplink communication within a frame configured in accordance with the Long-Term Evolution Time-Division Duplex standard.

    Abstract translation: 可以使得被配置为与无线网络中的其他设备进行通信并以频分双工模式操作的装置在雷达检测之前在下行链路频带的帧的多个子帧期间不发送 可以使发送与雷达传输的监视有关的第一信号发送到第二装置，并且可以响应于可以发生的事件来改变下行链路频带的帧的子帧的数量 是设备的负载的增加或减少或雷达传输的检测。 可选地，在下行链路频带的帧内的子帧的布置可以对应于在根据长期演进时分双工标准配置的帧内为上行链路通信指定的子帧的布置。

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