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公开(公告)号：US10128898B2
公开(公告)日：2018-11-13
申请号：US15483573
申请日：2017-04-10
Applicant: FEDERATED WIRELESS, INC.
Inventor： Samuel Jay Macmullan , Etty Lee , Jeff Winston , Rohan Grover , Kurt Schaubach
IPC: H04B1/7093 , H04B1/69 , H04B1/10
Abstract: An improved technique for detecting the presence or absence of one or more predetermined signals in a shared spectrum. In accordance with the disclosed embodiments, a received RF signal may be down-converted to a baseband signal, which is subsequently processed by a spectrum sensor to detect the presence or absence of a predetermined signal, such as a predetermined radar signal. The spectrum sensor may transform the baseband signal to the frequency domain, for example using a fast Fourier transform, to generate a corresponding set of frequency components. The spectrum sensor multiplies the frequency components of the baseband signal with the frequency response of a matched filter having a set of coefficients corresponding to the predetermined signal. The spectrum sensor may convert the matched-filter output signal to the time domain, for example using an inverse fast Fourier transform, and then may determine a value indicative of the signal power that it compares with a known threshold value. The spectrum sensor may determine the presence or absence of the predetermined signal in the received RF signal based on the result of the comparison, and may use the results of its determination to cause the reconfiguration of a transmitter that may be used to transmit RF signals in the same shared spectrum as the received RF signal.
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公开(公告)号：US11882585B2
公开(公告)日：2024-01-23
申请号：US17660884
申请日：2022-04-27
Applicant: Federated Wireless, Inc.
Inventor： Samuel Jay Macmullan , Michael Oliver Ghorbanzadeh , James Ni , Kurt Schaubach
IPC: H04W16/14 , H04W72/541 , H04W72/0453
CPC classification number: H04W72/541 , H04W16/14 , H04W72/0453
Abstract: Methods are provided for managing frequency channels in a shared spectrum available to a radio local access network (RLAN) access point (AP) in a wireless network. The methods may comprise receiving a request for channel availability from the RLAN AP to access the shared spectrum, computing, based on a plurality of parameters associated with the RLAN AP, an RLAN service area (RSA) associated with the RLAN AP, retrieving one or more incumbent protection contours (IPCs) associated with one or more incumbent users in the wireless network, identifying an IPC, among the one or more retrieved IPCs, that overlaps with the RSA associated with the RLAN AP, determining, based on the identified IPC, available frequency information corresponding to the received request for channel availability, and transmitting, to the RLAN AP, a channel availability response comprising the available frequency information.
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公开(公告)号：US11252574B2
公开(公告)日：2022-02-15
申请号：US16788965
申请日：2020-02-12
Applicant: Federated Wireless, Inc.
Inventor： Samuel Jay Macmullan , Michael Oliver Ghorbanzadeh , James Ni , Kurt Schaubach
Abstract: Improved techniques are provided for managing frequency channels in a shared spectrum available to a radio local access network device (RLAN) in a wireless network. A shared spectrum system may perform operations including retrieving a plurality of parameters for one or more high-priority users in the wireless network; computing, based on the retrieved parameters, a plurality of interference-to-noise power ratio (I/N) contour values; storing the plurality of I/N contour values in a database; receiving, from the RLAN in the wireless network, a request for channel availability, wherein the received request includes at least a first value; extracting, based on the first value in the request for channel availability, I/N contour values from the database exceeding a threshold value; determining, based on the extracted I/N contour values, available frequency information corresponding to the received request for channel availability; and transmitting a channel availability response comprising the available frequency information.
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公开(公告)号：US11012865B2
公开(公告)日：2021-05-18
申请号：US16555189
申请日：2019-08-29
Applicant: Federated Wireless, Inc.
Inventor： Samuel Jay Macmullan , Sepehr Mehrabanzad , Peter Harbour , Creighton Eldridge
IPC: H04W16/14 , H04B17/318 , H04W52/24 , H04L12/26
Abstract: A method and system is provided for enabling spectrum sensing capability in a network having at least one primary user and a plurality of secondary users configured to communicate using a shared spectrum. The methods and systems include receiving values from sensors corresponding to received signal strength from a primary user in one or more frequencies of the shared spectrum. The values are used to interpolate at least one additional value between the sensors. A detection threshold is determined for sensing a signal transmitted from the primary user based on an acceptable amount of interference. The primary user is then determined to be transmitting in the one or more frequencies of the shared spectrum if any of the values received from the plurality of sensors or the at least one additional value interpolated along the path exceeds the detection threshold.
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公开(公告)号：US20170302329A1
公开(公告)日：2017-10-19
申请号：US15483573
申请日：2017-04-10
Applicant: FEDERATED WIRELESS, INC.
Inventor： Samuel Jay Macmullan , Etty Lee , Jeff Winston , Rohan Grover , Kurt Schaubach
CPC classification number: H04B1/69 , H04B1/1027 , H04B2001/6912
Abstract: An improved technique for detecting the presence or absence of one or more predetermined signals in a shared spectrum. In accordance with the disclosed embodiments, a received RF signal may be down-converted to a baseband signal, which is subsequently processed by a spectrum sensor to detect the presence or absence of a predetermined signal, such as a predetermined radar signal. The spectrum sensor may transform the baseband signal to the frequency domain, for example using a fast Fourier transform, to generate a corresponding set of frequency components. The spectrum sensor multiplies the frequency components of the baseband signal with the frequency response of a matched filter having a set of coefficients corresponding to the predetermined signal. The spectrum sensor may convert the matched-filter output signal to the time domain, for example using an inverse fast Fourier transform, and then may determine a value indicative of the signal power that it compares with a known threshold value. The spectrum sensor may determine the presence or absence of the predetermined signal in the received RF signal based on the result of the comparison, and may use the results of its determination to cause the reconfiguration of a transmitter that may be used to transmit RF signals in the same shared spectrum as the received RF signal.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11659405B2
公开(公告)日：2023-05-23
申请号：US17839939
申请日：2022-06-14
Applicant: Federated Wireless, Inc.
Inventor： Samuel Jay Macmullan , Sepehr Mehrabanzad
IPC: H04W16/14 , H04W24/02 , H04W72/08 , H04W72/04 , H04W72/0453
CPC classification number: H04W16/14 , H04W24/02 , H04W72/0453 , H04W72/082
Abstract: Cloud-based systems and methods are provided for assigning shared spectrum resources to secondary users. The methods may comprise receiving, by a central block entity, a request for channel availability from a secondary user to access a shared spectrum in a wireless network, authenticating the secondary user, validating the secondary user, routing the request for channel availability to a managing block entity, receiving available frequency information from the managing block entity, assigning a frequency and an effective isotropic radiated power (EIRP) to the secondary user based on the available frequency information from the managing block entity, and transmitting, to the secondary user, a channel availability response based on the assigned EIRP. The managing block entity may be configured to determine available frequency information based on one or more parameters associated with the secondary user. The channel availability response may comprise a frequency on which the secondary user can transmit.
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公开(公告)号：US11350424B2
公开(公告)日：2022-05-31
申请号：US17087997
申请日：2020-11-03
Applicant: Federated Wireless, Inc.
Inventor： Samuel Jay Macmullan , Michael Oliver Ghorbanzadeh , James Ni , Kurt Schaubach
Abstract: Methods are provided for managing frequency channels in a shared spectrum available to a radio local access network (RLAN) access point (AP) in a wireless network. The methods may comprise receiving a request for channel availability from the RLAN AP to access the shared spectrum, computing, based on a plurality of parameters associated with the RLAN AP, an RLAN service area (RSA) associated with the RLAN AP, retrieving one or more incumbent protection contours (IPCs) associated with one or more incumbent users in the wireless network, identifying an IPC, among the one or more retrieved IPCs, that overlaps with the RSA associated with the RLAN AP, determining, based on the identified IPC, available frequency information corresponding to the received request for channel availability, and transmitting, to the RLAN AP, a channel availability response comprising the available frequency information.
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公开(公告)号：US11234135B2
公开(公告)日：2022-01-25
申请号：US16867164
申请日：2020-05-05
Applicant: Federated Wireless, Inc.
Inventor： Samuel Jay Macmullan , Michael Oliver Ghorbanzadeh , James Ni , Kurt Schaubach
Abstract: Techniques are provided for managing frequency access in a shared spectrum available to a radio local access network (RLAN) in a wireless network. A shared spectrum system may perform operations including retrieving a plurality of parameters for one or more high-priority users in the wireless network; computing, based on the retrieved parameters, a plurality of interference-to-noise power ratio (I/N) contours; storing the plurality of I/N contours in a database; receiving, from an RLAN device in the wireless network, a request for spectrum availability, wherein the received request includes at least a first value; extracting, based on the first value in the request for spectrum availability, an I/N contour from the database matching RLAN parameters; determining, based on the extracted I/N contour, available frequency information corresponding to the received request for spectrum availability; and transmitting, to the RLAN device, the available frequency information.
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公开(公告)号：US10405194B2
公开(公告)日：2019-09-03
申请号：US16041466
申请日：2018-07-20
Applicant: Federated Wireless, Inc.
Inventor： Samuel Jay Macmullan , Sepehr Mehrabanzad , Peter Harbour , Creighton Eldridge
IPC: H04W24/00 , H04W16/14 , H04B17/318 , H04W52/24 , H04L12/26
Abstract: A method and system is provided for enabling spectrum sensing capability in a network having at least one primary user and a plurality of secondary users configured to communicate using a shared spectrum. The methods and systems include receiving values from sensors corresponding to received signal strength from a primary user in one or more frequencies of the shared spectrum. The values are used to interpolate at least one additional value between the sensors. A detection threshold is determined for sensing a signal transmitted from the primary user based on an acceptable amount of interference. The primary user is then determined to be transmitting in the one or more frequencies of the shared spectrum if any of the values received from the plurality of sensors or the at least one additional value interpolated along the path exceeds the detection threshold.
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公开(公告)号：US10057782B2
公开(公告)日：2018-08-21
申请号：US15596764
申请日：2017-05-16
Applicant: Federated Wireless, Inc.
Inventor： Samuel Jay Macmullan , Sepehr Mehrabanzad , Peter Harbour , Creighton Eldridge
IPC: H04W24/00 , H04W16/14 , H04B17/318 , H04W52/24 , H04L12/26
CPC classification number: H04W16/14 , H04B17/318 , H04L43/0829 , H04W52/243
Abstract: A method and system is provided for enabling spectrum sensing capability in a network having at least one primary user and a plurality of secondary users configured to communicate using a shared spectrum. The methods and systems include receiving values from sensors corresponding to received signal strength from a primary user in one or more frequencies of the shared spectrum. The values are used to interpolate at least one additional value between the sensors. A detection threshold is determined for sensing a signal transmitted from the primary user based on an acceptable amount of interference. The primary user is then determined to be transmitting in the one or more frequencies of the shared spectrum if any of the values received from the plurality of sensors or the at least one additional value interpolated along the path exceeds the detection threshold.
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