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    • 2. 发明授权
    • Apparatus and method for preventing fraudulent calls in a wireless
telephone system using destination and fingerprint analysis
    • 用于使用目的地和指纹分析在无线电话系统中防止欺诈呼叫的装置和方法
    • US5970405A
    • 1999-10-19
    • US810318
    • 1997-02-28
    • Dmitry KaplanDavid M. StanhopeRandolph W. McKernanHoward L. WilburnEvan R. Green
    • Dmitry KaplanDavid M. StanhopeRandolph W. McKernanHoward L. WilburnEvan R. Green
    • H04W12/12H04Q7/20
    • H04W12/12
    • A system and method for the detection of fraudulent use of a wireless telephone system includes a fingerprint analyzer that identifies an unauthenticated wireless telephone as authorized or fraudulent based on a fingerprint of the unauthenticated wireless telephone. The system maintains a valid destination list specific for each authorized wireless telephone. Each valid destination list contains destinations considered to be valid for that particular authorized wireless telephone. When an unauthenticated wireless telephone transmits a call request containing a destination, the system classifies the call as valid when the destination is in the valid destination list for the authorized wireless telephone regardless of whether the fingerprint analyzer identifies the unauthenticated wireless telephone as fraudulent. The system may bypass or terminate the fingerprint analysis, or simply ignore the result of the fingerprint analysis by the fingerprint analyzer. The system also maintains an invalid destination list specific for each authorized wireless telephone with destinations considered to be invalid for that particular authorized wireless telephone. Calls to such destinations are blocked. The system further maintains a suspicious destination list containing destinations considered to be potentially fraudulent. When the destination contained in the call request is in the suspicious destination list, the fingerprint analysis is performed with a higher threshold to require a closer match between a fingerprint of the unauthenticated wireless telephone and a stored fingerprint of the corresponding authorized wireless telephone.
    • 用于检测无线电话系统的欺诈性使用的系统和方法包括:指纹分析器,其基于未经认证的无线电话的指纹,将未经认证的无线电话识别为授权或欺诈。 系统维护每个授权的无线电话专用的有效目的地列表。 每个有效目的地列表包含被认为对该特定授权无线电话有效的目的地。 当未经认证的无线电话发送包含目的地的呼叫请求时,无论指纹分析器是否将未认证的无线电话识别为欺诈,系统将目的地在授权无线电话的有效目的地列表中的呼叫分类为有效。 系统可以绕过或终止指纹分析,或者简单地忽略指纹分析仪的指纹分析结果。 该系统还维护对于被认为对该特定授权无线电话无效的目的的每个授权无线电话特定的目的地列表无效。 对这些目的地的呼叫被阻止。 系统进一步维护包含被认为是潜在欺诈的目的地的可疑目的地列表。 当包含在呼叫请求中的目的地在可疑目的地列表中时,以更高的阈值执行指纹分析,以要求未经认证的无线电话的指纹与相应的授权无线电话的存储指纹之间的更紧密的匹配。
    • 3. 发明授权
    • System and method for the verification of authentic telephone numbers in
a wireless telephone system
    • 用于验证无线电话系统中的真实电话号码的系统和方法
    • US5999807A
    • 1999-12-07
    • US810493
    • 1997-02-28
    • Dmitry KaplanDavid M. StanhopeRandolph W. McKernanHoward L. WilburnEvan R. Green
    • Dmitry KaplanDavid M. StanhopeRandolph W. McKernanHoward L. WilburnEvan R. Green
    • H04M1/67H04M1/677H04M1/725H04M1/66
    • H04M1/677H04M1/67H04M1/725
    • A system for the authorization of wireless telephone communications establishes two sets of authorized telephone numbers. A first set of authorized telephone numbers are supplied by the customer, and the second set of authorized numbers are derived from customer bills paid by the customer. The system analyzes transmission characteristics from an unauthenticated cellular telephone and attempts to verify its authenticity based on the transmission characteristic by analyzing the transmission characteristic with respect to stored reference waveforms for the authentic wireless telephone. However, the results of this signature analysis if negative may be overridden if the telephone number dialed by the unauthenticated cellular telephone matches a telephone number in either the first or second sets of authorized telephone numbers. The system also includes a technique for modifying the reference waveforms to compensate for changes in the transmission characteristic. The system will only consider the inclusion of transmission characteristics from the present communication if the dialed digits for the present communication match one of the telephone numbers in either the first or second sets of authorized telephone numbers.
    • 用于授权无线电话通信的系统建立两组授权电话号码。 第一组授权电话号码由客户提供,第二组授权号码来自客户支付的客户费用。 该系统分析来自未认证的蜂窝式电话的传输特性,并通过分析关于真实无线电话的存储的参考波形的传输特性来尝试基于传输特性来验证其真实性。 然而,如果由未认证的蜂窝电话拨打的电话号码匹配第一组或第二组授权电话号码中的电话号码,则该签名分析的结果可以被否定。 该系统还包括用于修改参考波形以补偿传输特性变化的技术。 如果本通信的拨号数字与第一组或第二组授权电话号码中的一个电话号码匹配,系统将仅考虑包括来自本通信的传输特性。
    • 4. 发明授权
    • Active waveform collection for use in transmitter identification
    • 用于发射机识别的主动波形采集
    • US6035188A
    • 2000-03-07
    • US670489
    • 1996-06-27
    • David N. HoogerwerfEvan R. GreenDavid M. StanhopeRandy McKernan
    • David N. HoogerwerfEvan R. GreenDavid M. StanhopeRandy McKernan
    • H04L29/06H04W12/00H04W12/12H04W24/00H04W74/06H04Q7/20
    • H04L63/08H04W12/12H04W24/00H04W74/06
    • A method and system for actively and rapidly collecting reference waveforms from a large number of cellular telephones is provided. The reference waveforms are used to generate fingerprints which are used to distinguish between authorized cellular telephones and unauthorized cellular telephones. Initially, the system selects a cellular telephone whose reference waveform is desired. The selected cellular telephone is then sent a polling message such as a page or registration request. The cellular telephone receives the polling message and transmits a radio frequency (RF) signal containing a reference waveform that contains certain transmission characteristics unique to the selected cellular telephone. From the received RF signal, the reference waveform is extracted and stored. Preferably, the selected cellular telephone is polled repeatedly in order to receive a sufficiently large number of reference waveforms to be able to generate an accurate fingerprint. One method of polling the cellular telephone is by calling the selected cellular telephone through a cellular telephone system. Another method of polling the cellular telephone is by transmitting a control message such as a page, registration, audit or maintenance message.
    • 提供了一种从大量蜂窝电话中主动快速收集参考波形的方法和系统。 参考波形用于产生用于区分授权蜂窝电话和未授权蜂窝电话的指纹。 最初,系统选择需要参考波形的蜂窝电话。 然后,所选择的蜂窝电话发送诸如页面或注册请求之类的轮询消息。 蜂窝电话接收轮询消息,并发送包含包含所选移动电话所特有的某些传输特性的参考波形的射频(RF)信号。 从接收到的RF信号中,提取并存储参考波形。 优选地,所选择的蜂窝电话被重复轮询,以便接收足够大量的参考波形以能够产生准确的指纹。 轮询蜂窝电话的一种方法是通过蜂窝电话系统呼叫所选择的蜂窝电话。 轮询蜂窝电话的另一种方法是通过发送诸如页面,注册,审核或维护消息之类的控制消息。
    • 6. 发明授权
    • Broadband radio transceiver with optical transform
    • 带光变换的宽带无线电收发器
    • US08600237B2
    • 2013-12-03
    • US12976099
    • 2010-12-22
    • Evan R. GreenMario J. PanicciaSean M. KoehlRichard JonesGuy S. Anthony
    • Evan R. GreenMario J. PanicciaSean M. KoehlRichard JonesGuy S. Anthony
    • H04B10/00
    • H04B10/2575H04B1/71635H04B1/71637H04B2210/006H04L27/2096H04L27/223H04L27/2601
    • A broadband receiving apparatus includes an antenna to receive a radio signal having a plurality of modulation frequencies. An amplifier drives a laser source from the broadband radio signal to produce an optical signal having a plurality of spectral components. A diffraction grating transforms the optical signal into its spectral components. An array of photo-detectors converts the spectral components into electronic signals corresponding to the plurality of modulation frequencies. A transmitting apparatus includes an array of coherent laser emitters driven by electronic signals corresponding to a plurality of modulation frequencies to produce optical signals corresponding to a plurality of spectral components. A diffraction grating inverse transforms the spectral components into a composite optical signal. A photo-detector converts the composite optical signal into a composite electronic signal including the plurality of modulation frequencies. An amplifier amplifies the composite electronic signal for transmission as a broadband radio signal.
    • 宽带接收装置包括用于接收具有多个调制频率的无线电信号的天线。 放大器从宽带无线电信号驱动激光源以产生具有多个频谱分量的光信号。 衍射光栅将光信号转换成其光谱分量。 光检测器阵列将光谱分量转换成对应于多个调制频率的电子信号。 发送装置包括由对应于多个调制频率的电子信号驱动的相干激光发射器的阵列,以产生对应于多个频谱分量的光信号。 衍射光栅将光谱分量逆变换成复合光信号。 光检测器将复合光信号转换成包括多个调制频率的复合电子信号。 放大器放大复合电子信号作为宽带无线电信号进行传输。
    • 7. 发明授权
    • Adaptive waveform matching for use in transmitter identification
    • 用于发射机识别的自适应波形匹配
    • US5715518A
    • 1998-02-03
    • US611429
    • 1996-03-06
    • Wm. Gerrit BarrereDmitry KaplanEvan R. Green
    • Wm. Gerrit BarrereDmitry KaplanEvan R. Green
    • H04W12/06H04B1/00H04B7/26
    • H04W12/06
    • A system and method extracts a portion of a transmitted waveform and compares the transmission characteristics of the extracted waveform to determine if they match a stored fingerprint associated with the transmitter, such as a cellular telephone. The system adaptively creates fingerprint data by storing a plurality of waveforms believed to be from a particular transmitter and calculates the variability of the individual transmissions with respect to a composite mean waveform of the transmission characteristics. The system emphasizes the variability between the individual waveforms and the composite mean waveform and determines variability values for each of the individual waveforms in the fingerprint. When the system receives an additional unidentified transmission purported to be from the transmitter with the stored fingerprint, the system determines whether the variability of the unidentified waveform fits within the predetermined margins of variability for the fingerprint. If the variability of the unidentified waveform is less than a predetermined variability threshold, the system considers the waveforms to be a suitable match. The system can adaptively include new waveforms in the fingerprint by determining whether the newly-received transmission characteristics meet a series of criteria for inclusion in the fingerprint. In addition, the system analyzes the newly-received waveform and all waveforms forming the fingerprint to determine if any of the waveforms exceed a predetermined maximum variability value. A waveform that exceeds the maximum variability value is eliminated from the fingerprint. The system is easily automated, thus providing a useful analysis technique for communications network such as cellular telephone systems where a large population of transmitters with similar transmission characteristics are operating at any given time.
    • 系统和方法提取发送波形的一部分,并比较所提取的波形的传输特性,以确定它们是否与存储的与诸如蜂窝电话的发射机相关联的指纹相匹配。 系统通过存储相信来自特定发射机的多个波形自适应地创建指纹数据,并且相对于传输特性的复合平均波形来计算各个传输的可变性。 该系统强调各个波形与复合平均波形之间的变化,并确定指纹中各个波形的变异值。 当系统用存储的指纹接收到来自发射机的另外的未识别的传输时,系统确定未识别波形的可变性是否适合指纹的可变性的预定裕度内。 如果未识别波形的可变性小于预定的可变性阈值,则系统认为波形是合适的匹配。 该系统可以通过确定新接收的传输特性是否满足包含在指纹中的一系列标准来自适应地包括指纹中的新波形。 此外,系统分析新接收的波形和形成指纹的所有波形,以确定是否有任何波形超过预定的最大变化值。 从指纹中消除超过最大可变性值的波形。 该系统容易自动化,从而为诸如蜂窝电话系统之类的通信网络提供有用的分析技术,其中具有相似传输特性的大量发射机在任何给定时间运行。