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公开(公告)号：US09755869B2
公开(公告)日：2017-09-05
申请号：US14761958
申请日：2014-11-18
Inventor： Michael P. Anthony , Jack Chuang , Apurva N. Mody , Chad M. Spooner
CPC classification number: H04L27/0006 , H04L5/003 , H04L12/4633 , H04L27/0012
Abstract: A system and method use tunnelizing for analyzing frequency spectrum. The method may include the steps of under sampling an input signal to take samples in one or more tunnels each with a tunnel bandwidth that is equal to or less than a total analysis bandwidth of the input signal; detecting one or more cyclostationary features of the input signal based on the samples; and determining one or more signal types of the one or more cyclostationary features based on the one or more cyclostationary features.
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公开(公告)号：US20170208474A1
公开(公告)日：2017-07-20
申请号：US15068085
申请日：2016-03-11
Inventor： Apurva N. Mody , Kenneth Carrigan , Jack Chuang , Alex Lackpour , Matthew J. Sherman , Alan M. Rosenwinkel
CPC classification number: H04W16/14 , G01S7/003 , G01S7/023 , H04B1/06 , H04J13/0062 , H04K3/20 , H04K3/226 , H04L5/0023 , H04L5/003 , H04L5/0051 , H04L5/0091
Abstract: A spectrum sharing system includes an advanced beacon (e.g. a low latency RF link) as part of an information sharing subsystem. The advanced beacon signal carries radar spectrum transmission schedule in an obfuscated way such as not to reveal the geolocation of the radar. The information sharing subsystem directs nodes, such as cell phones, to share spectrum based on spectrum sharing instructions contained in the advanced beacon. The spectrum sharing system permits out-of-band sharing of spectrum white space, as well as sharing of in-band spectrum gray space.
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Patent Agency Ranking
公开(公告)号：US11366227B2
公开(公告)日：2022-06-21
申请号：US16507832
申请日：2019-07-10
Inventor： Apurva N. Mody , David J. Couto , Prabahan Basu , Michael J. Shea
IPC: H04J13/00 , G01S17/26 , H04B10/556 , H04B1/69 , G01S7/52
Abstract: A multi-user system to simultaneously perform operations such as communication, RADAR, Light Detection and Ranging (LIDAR) and Relative Navigation (RELNAV). The techniques according to an embodiment includes generating a Fourier based orthogonal chirp sequence of length P, a prime number greater than the number of users targeted for communication. The orthogonal chirp sequence is based on an identifier, in the range of one to P−1, associated with one of the targeted users. The method further includes using the orthogonal chirp sequence to generate a spread user signal based on a message directed to the one targeted users. The method further includes generating a sequence of training pulses for insertion into the spread user signal to facilitate reception of the signal. The method further includes transmitting and receiving a reflection of the spread user signal from one of the targeted users, the reflection used to detect and range the user.
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公开(公告)号：US20200187013A1
公开(公告)日：2020-06-11
申请号：US16224253
申请日：2018-12-18
Inventor： Apurva N. Mody , Kenneth Carrigan , Jack Chuang , Alex Lackpour , Matthew J. Sherman , Alan M. Rosenwinkel
Abstract: A spectrum sharing system includes an advanced beacon (e.g. a low latency RF link) as part of an information sharing subsystem. The advanced beacon signal carries radar spectrum transmission schedule in an obfuscated way such as not to reveal the geolocation of the radar. The information sharing subsystem directs nodes, such as cell phones, to share spectrum based on spectrum sharing instructions contained in the advanced beacon. The spectrum sharing system permits out-of-band sharing of spectrum white space, as well as sharing of in-band spectrum gray space.
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公开(公告)号：US20190327006A1
公开(公告)日：2019-10-24
申请号：US16473532
申请日：2017-05-01
Inventor： Apurva N. Mody , Jack Chuang , Ronald Lawrence
IPC: H04B17/23 , H04B1/3827 , H04B17/309 , G06F3/0485 , G06F3/14 , G01R23/02
Abstract: Techniques are provided for implementing a portable spectrum analyzer. An example system, according to an embodiment, includes a signal analyzer including an RF receiver to receive RF signals from an antenna, an analog-to-digital converter to generate a sampled signal based on the received RF signals, and a signal analysis co-processor to perform cognitive scanning analysis of the sampled signal. The cognitive scanning analysis includes detection, identification, and characterization of digital/analog signal(s) embedded in the sampled signal. The system may further include a communications interface circuit to provide communication between the signal analyzer and an associated mobile host platform (e.g., smartphone). The communication includes transmitting results of the cognitive scanning analysis to the mobile host and receiving parameters from the mobile host to control the operation of the cognitive scanning analysis. The signal analyzer and mobile host are coupled through a shared enclosure such as a hinged case, sleeve, or wallet.
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公开(公告)号：US20180091336A1
公开(公告)日：2018-03-29
申请号：US15588256
申请日：2017-05-05
Inventor： Apurva N. Mody , Jack Chuang , Ronald Lawrence , Chad M. Spooner
IPC: H04L27/00 , H04M1/725 , H04B17/391 , G01R23/16
CPC classification number: H04L27/0006 , G01R23/16 , H04B17/391 , H04M1/185 , H04M1/72522 , H04M1/72527 , H04W52/50
Abstract: Techniques are provided for implementing a portable spectrum analyzer. An example system, according to an embodiment, includes a signal analyzer including an RF receiver to receive RF signals from an antenna, an analog-to-digital converter to generate a sampled signal based on the received RF signals, and a signal analysis co-processor to perform cognitive scanning analysis of the sampled signal. The cognitive scanning analysis includes detection, identification, and characterization of digital/analog signal(s) embedded in the sampled signal. The system may further include a communications interface circuit to provide communication between the signal analyzer and an associated mobile host platform (e.g., smartphone). The communication includes transmitting results of the cognitive scanning analysis to the mobile host and receiving parameters from the mobile host to control the operation of the cognitive scanning analysis. The signal analyzer and mobile host are coupled through a shared enclosure such as a hinged case, sleeve, or wallet.
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17.发明申请公开(公告)号：US20150063570A1
公开(公告)日：2015-03-05
申请号：US14528464
申请日：2014-10-30
Inventor： Ranga Reddy , Thomas Kiernan , Apurva N. Mody
CPC classification number: H04W12/02 , H04K3/25 , H04K3/65 , H04K2203/18 , H04L9/0822 , H04L9/0891 , H04L9/3066 , H04L9/3247 , H04L9/3263 , H04L63/0457 , H04L63/0823 , H04L2209/80 , H04L2463/062 , H04W12/06 , H04W12/08 , H04W16/14
Abstract: In some embodiments, authentication, confidentiality, and privacy are enhanced for a wireless network of cognitive radios by encryption of network management and control messages as well as data traffic, thereby protecting information pertaining to node identification, node location, node-sensed incumbent transmissions, CRN frequency channel selections, and such like. During initial network registration, a temporary ID can be issued to a node, and then replaced once encrypted communication has been established. This prevents association of initial, clear-text messages with later encrypted transmissions. Elliptic curve cryptography can be used for mutual authentication between subscribers and the base station. ECC-based implicit digital certificates can be embedded in co-existence beacons used by CRN nodes to coordinate use of frequency channels, thereby preventing denial of service attacks due to transmitting of falsified beacons. Similar certificates can be embedded within identity beacons used to protect certain incumbents from interference by the CRN.
Abstract translation: 在一些实施例中，通过网络管理和控制消息以及数据业务的加密，对认知无线电的无线网络增强认证，机密性和隐私性，从而保护与节点识别，节点位置，节点感知的在线传输有关的信息， CRN频道选择等。 在初始网络注册期间，可以向节点发出临时ID，然后一旦建立了加密的通信就被替换。 这样可以防止初始，明文消息与稍后加密的传输的关联。 椭圆曲线密码术可用于用户和基站之间的相互认证。 基于ECC的隐式数字证书可以嵌入到CRN节点使用的共存信标中，以协调频道的使用，从而防止由于传输伪造的信标而导致的拒绝服务攻击。 类似的证书可以嵌入到用于保护某些在线人员免受CRN干扰的身份信标中。
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