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公开(公告)号：US20180049152A1
公开(公告)日：2018-02-15
申请号：US15705025
申请日：2017-09-14
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H04W64/003 , G01S5/0215 , G01S5/0221 , G01S5/0226 , G01S5/10 , H04W4/02 , H04W64/00
Abstract: Embodiments of the present invention provide a positioning method, a positioning server, a terminal and a base station. The positioning method includes: notifying a terminal of difference threshold information; receiving cell subset information that is determined by the terminal according to the difference threshold information, where the cell subset information is used to indicate a cell pair whose reference signal measured value exceeds the difference threshold, or the cell subset information is used to indicate a cell pair whose reference signal measured value does not exceed the difference threshold; determining a configuration of a PRS according to the cell subset information, and notifying the terminal of the configuration of the PRS; and receiving an RSTD that is obtained by the terminal through measurement according to the configuration of the PRS, and determining a location of the terminal according to the RSTD.
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公开(公告)号：US20170363709A1
公开(公告)日：2017-12-21
申请号：US15676889
申请日：2017-08-14
Applicant: Humatics Corporation
Inventor： Gregory L. Charvat , David A. Mindell
IPC: G01S5/14 , H01Q5/10 , H04W4/02 , H04B5/00 , H01Q9/27 , H01Q9/26 , H01Q9/04 , H01Q3/36 , H01Q1/52 , H01Q1/38 , H01Q1/24 , H01Q1/22 , G01S5/02 , H04W56/00 , H04W64/00
CPC classification number: G01S5/14 , G01S5/0215 , G01S5/0284 , G01S11/02 , G01S13/878 , H01Q1/2216 , H01Q1/2283 , H01Q1/24 , H01Q1/247 , H01Q1/38 , H01Q1/521 , H01Q1/525 , H01Q3/36 , H01Q5/10 , H01Q9/0428 , H01Q9/0492 , H01Q9/26 , H01Q9/27 , H04B5/0056 , H04W4/023 , H04W56/001 , H04W64/003 , H04W64/006
Abstract: A system comprising a first interrogator device that includes: a first antenna configured to transmit, to a target device, a first radio-frequency (RF) signal having a first center frequency; a second antenna configured to receive, from the target device, a second RF signal having a second center frequency that is a harmonic of the first frequency; and first circuitry configured to obtain, using the first RF signal and the second RF signal, a first mixed RF signal indicative of a first distance between the first interrogator and the target device. The system further comprises at least one processor configured to determine the first distance based, at least in part, on the first mixed RF signal, and determine a location of the target device based, at least in part, on the determined first distance.
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23.发明申请公开(公告)号：US20170350959A1
公开(公告)日：2017-12-07
申请号：US15615599
申请日：2017-06-06
Applicant: Raziq Yaqub , Kaveh Heidary
Inventor： Raziq Yaqub , Kaveh Heidary
CPC classification number: G01S5/0289 , B64C39/024 , B64C2201/12 , B64C2201/127 , G01S3/40 , G01S3/42 , G01S5/0072 , G01S5/0215 , G01S5/0252 , G01S5/06 , G01S5/12 , H04W88/08
Abstract: A system and method for detecting individuals in a target geographic location, such as a disastrous site, that identifies and locates potential victims using signals from the victims' cell phone utilizes an unmanned aerial vehicle controlled equipped with a retractable antenna component and a core network connection component. The retractable antenna component includes a mobile telephony base station and employs a smart antenna system so as to estimate the direction of arrival of all incoming signals. The core network connection component is operative to establish a wireless communication link with an Internet Protocol based core network of. When a victim's cell phones attempts to connect to the base station in order to access the core network, the location of the cell phone can be determined. The locations can be plotted on a map and based on the distribution of phones on the map, rescue efforts can be optimized.
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公开(公告)号：US09829563B2
公开(公告)日：2017-11-28
申请号：US14677149
申请日：2015-04-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Dengkun Xiao , Jie Cui , Yongtong Wu
CPC classification number: G01S5/14 , G01S5/0215 , H04W64/00
Abstract: Embodiments of the present invention provide a positioning method, including: determining, by a positioning server, positioning signal configuration information; sending, by the positioning server, the positioning signal configuration information to a positioning signal sending entity; obtaining, by the positioning server, a measurement estimation result of a shortest transmission path between a positioning signal measurement entity and the positioning signal sending entity; and positioning, by the positioning server, a terminal by using the measurement estimation result of the shortest transmission path, where the terminal is one of the positioning signal measurement entity and the positioning signal sending entity. The embodiments of the present invention can resist an NLOS path deviation and a positioning signal strength loss and an SINR loss, so as to improve the positioning accuracy.
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公开(公告)号：US09814015B2
公开(公告)日：2017-11-07
申请号：US14333239
申请日：2014-07-16
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H04W64/003 , G01S5/0215 , G01S5/0221 , G01S5/0226 , G01S5/10 , H04W4/02 , H04W64/00
Abstract: Embodiments of the present invention provide a positioning method, a positioning server, a terminal and a base station. The positioning method includes: notifying a terminal of difference threshold information; receiving cell subset information that is determined by the terminal according to the difference threshold information, where the cell subset information is used to indicate a cell pair whose reference signal measured value exceeds the difference threshold, or the cell subset information is used to indicate a cell pair whose reference signal measured value does not exceed the difference threshold; determining a configuration of a PRS according to the cell subset information, and notifying the terminal of the configuration of the PRS; and receiving an RSTD that is obtained by the terminal through measurement according to the configuration of the PRS, and determining a location of the terminal according to the RSTD.
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Patent Agency Ranking
公开(公告)号：US20170299692A1
公开(公告)日：2017-10-19
申请号：US15637574
申请日：2017-06-29
Applicant: NextNav, LLC
Inventor： NORMAN F. KRASNER
CPC classification number: G01S7/023 , G01S5/0215 , G01S19/21 , H03H17/025 , H04B1/7101 , H04B1/7107 , H04K3/90
Abstract: An interference removal filter that includes a combination of a first filter and a second filter, where the first filter passes signals over a frequency range of size B with a variation of less than +/−3 dB, where the peak value of the impulse response of the second filter is displaced in time from the peak value of the impulse response of the first filter by at least 2/B time units, and where the combination of the first filter and the second filter produces a notch in frequency at a frequency location within the frequency range.
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公开(公告)号：US09766321B2
公开(公告)日：2017-09-19
申请号：US13830291
申请日：2013-03-14
Applicant: Digi International Inc.
Inventor： John Robert Schwartz , Terry Michael Schaffner
CPC classification number: G01S5/06 , G01S5/0215 , G01S5/0273 , G01S5/14 , G01S13/876 , G01S13/878
Abstract: A radio frequency locator system and method. First, second and third reference devices are operable to transmit a plurality of spread spectrum chirp signals frequency offset from one another. An object device is operable to receive the plurality of spread spectrum chirp signals, the object device is further operable to evaluate the received plurality of spread spectrum chirp signals for relative phase shifts between the plurality of spread spectrum chirp signals and derive a fine propagation time between the reference devices and the object device using the phase shifts between the spread spectrum chirp signals. The reference devices determine their location independent of the object device and determine the location of the object device as a function of each of their locations and of their range to the object device.
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公开(公告)号：US09739872B2
公开(公告)日：2017-08-22
申请号：US14993330
申请日：2016-01-12
Applicant: NextNav, LLC
Inventor： Norman F. Krasner
CPC classification number: G01S7/023 , G01S5/0215 , G01S19/21 , H03H17/025 , H04B1/7101 , H04B1/7107 , H04K3/90
Abstract: An interference removal filter that includes a combination of a first filter and a second filter, where the first filter passes signals over a frequency range of size B with a variation of less than +/−3 dB, where the peak value of the impulse response of the second filter is displaced in time from the peak value of the impulse response of the first filter by at least 2/B time units, and where the combination of the first filter and the second filter produces a notch in frequency at a frequency location within the frequency range.
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公开(公告)号：US09720071B2
公开(公告)日：2017-08-01
申请号：US14882652
申请日：2015-10-14
Applicant: NextNav, LLC
Inventor： Andrew Sendonaris , Arun Raghupathy
CPC classification number: G01S5/10 , G01S5/0215 , G01S5/0273 , G01S19/22 , G01S19/428
Abstract: Estimating an unknown position of a receiver. In some embodiment, trilateration techniques that quantify uncertainty in the estimate of the unknown position are applied. One such technique for estimating a two-dimensional or three-dimensional position of a receiver uses an L-1 norm computation instead of an L-2 norm computation.
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公开(公告)号：US09706517B2
公开(公告)日：2017-07-11
申请号：US14754313
申请日：2015-06-29
Applicant: LG ELECTRONICS INC.
Inventor： Kijun Kim , Jonghyun Park
CPC classification number: H04W64/006 , G01S5/0054 , G01S5/0215 , H04W64/00
Abstract: A method of positioning a mobile station (MS) in a wireless communication system is provided. The method is performed by the MS. The method includes receiving information on a reference signal for positioning from a serving base station, measuring the reference signal, comparing a transmission polarization characteristic and reception polarization characteristic of the measured reference signal and determining whether a light of sight (LOS) link between a base station for transmitting the reference signal and the MS is present or not, when the information on the reference signal includes information on the transmission polarization characteristic of the reference signal, and transmitting information on whether the LOS link is present or not to the serving base station.
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