Patents by Inventor Neiyer S. Correal
Neiyer S. Correal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20160218754Abstract: A communication device includes a receiver that is capable of canceling in-channel interference. The receiver includes an antenna for receiving a wireless signal comprising in-channel components and an out-of-channel component, wherein the in-channel components comprise a desired component and an in-channel interference component. A first filter of the receiver filters the wireless signal by blocking at least a portion of the out-of-channel component to produce a first signal comprising the in-channel components, and at least a second filter of the receiver filters the wireless signal by blocking at least a portion of the in-channel components to produce a second signal comprising the out-of-channel component. An in-channel interference estimator of the receiver generates an in-channel interference estimation signal based on the second signal. And a combiner of the filter combines the first signal and the second signal to at least partially cancel the in-channel interference component of the first signal.Type: ApplicationFiled: January 26, 2015Publication date: July 28, 2016Inventors: QICAI SHI, NEIYER S. CORREAL, JOSEPH P. HECK, SPYROS KYPEROUNTAS, ROBERT E. STENGEL
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Patent number: 9385763Abstract: A communication device includes a receiver that is capable of canceling in -channel interference. The receiver includes an antenna for receiving a wireless signal comprising in-channel components and an out-of-channel component, wherein the in-channel components comprise a desired component and an in-channel interference component. A first filter of the receiver filters the wireless signal by blocking at least a portion of the out-of-channel component to produce a first signal comprising the in -channel components, and at least a second filter of the receiver filters the wireless signal by blocking at least a portion of the in-channel components to produce a second signal comprising the out-of-channel component. An in-channel interference estimator of the receiver generates an in-channel interference estimation signal based on the second signal. And a combiner of the filter combines the first signal and the second signal to at least partially cancel the in-channel interference component of the first signal.Type: GrantFiled: January 26, 2015Date of Patent: July 5, 2016Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Qicai Shi, Neiyer S Correal, Joseph P Heck, Spyros Kyperountas, Robert E Stengel
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Patent number: 9386606Abstract: Disclosed herein are methods and systems for embedding a supplementary data channel in LTE-based communication systems. One embodiment takes the form of a process that includes obtaining a primary data signal. The primary data signal includes a given symbol, and the given symbol includes primary payload data prepended with a given cyclic prefix. The process also includes obtaining supplementary payload data. The process also includes generating a modified primary data signal at least in part by replacing an initial portion of the given cyclic prefix with a subset of the supplementary payload data. The process also includes outputting the generated modified primary data signal for transmission via an air interface.Type: GrantFiled: September 3, 2014Date of Patent: July 5, 2016Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Qicai Shi, Neiyer S Correal, Spyros Kyperountas
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Patent number: 9336675Abstract: Disclosed herein are methods and systems for presenting prioritized incident content. One embodiment takes the form of a method that includes receiving one or more status alerts from one or more public-safety devices associated with one or more public-safety responders. The method also includes correlating one or more of the received status alerts with one or more media sessions involving one or more of the public-safety responders. The method also includes prioritizing one or more of the media sessions based on prioritization criteria that includes the one or more status alerts correlated with those media sessions. The method also includes presenting one or more of the prioritized media sessions in a chronological view on respective user interfaces of one or more public-safety communication devices.Type: GrantFiled: April 28, 2014Date of Patent: May 10, 2016Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Trent J Miller, Alejandro G Blanco, Neiyer S Correal, Fabio M Costa, Kenneth W Douros, Bradley M Hiben, Spyros Kyperountas, Lin Lin, Yadunandana N Rao
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Publication number: 20160066350Abstract: Disclosed herein are methods and systems for embedding a supplementary data channel in LTE-based communication systems. One embodiment takes the form of a process that includes obtaining a primary data signal. The primary data signal includes a given symbol, and the given symbol includes primary payload data prepended with a given cyclic prefix. The process also includes obtaining supplementary payload data. The process also includes generating a modified primary data signal at least in part by replacing an initial portion of the given cyclic prefix with a subset of the supplementary payload data. The process also includes outputting the generated modified primary data signal for transmission via an air interface.Type: ApplicationFiled: September 3, 2014Publication date: March 3, 2016Inventors: QICAI SHI, NEIYER S CORREAL, SPYROS KYPEROUNTAS
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Publication number: 20150310730Abstract: Disclosed herein are methods and systems for presenting prioritized incident content. One embodiment takes the form of a method that includes receiving one or more status alerts from one or more public-safety devices associated with one or more public-safety responders. The method also includes correlating one or more of the received status alerts with one or more media sessions involving one or more of the public-safety responders. The method also includes prioritizing one or more of the media sessions based on prioritization criteria that includes the one or more status alerts correlated with those media sessions. The method also includes presenting one or more of the prioritized media sessions in a chronological view on respective user interfaces of one or more public-safety communication devices.Type: ApplicationFiled: April 28, 2014Publication date: October 29, 2015Applicant: MOTOROLA SOLUTIONS, INCInventors: Trent J. MILLER, Alejandro G. BLANCO, Neiyer S. CORREAL, Fabio M. COSTA, Kenneth W. DOUROS, Bradley M. HIBEN, Spyros KYPEROUNTAS, Lin LIN, Yadunandana N. RAO
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Patent number: 9031526Abstract: A communication device includes a receiver that is capable of canceling in-channel interference. The receiver includes an antenna for receiving a wireless signal comprising in-channel components and an out-of-channel component, wherein the in-channel components comprise a desired component and an in-channel interference component. A first filter of the receiver filters the wireless signal by blocking at least a portion of the out-of-channel component to produce a first signal comprising the in-channel components, and at least a second filter of the receiver filters the wireless signal by blocking at least a portion of the in-channel components to produce a second signal comprising the out-of-channel component. An in-channel interference estimator of the receiver generates an in-channel interference estimation signal based on the second signal. And a combiner of the filter combines the first signal and the second signal to at least partially cancel the in-channel interference component of the first signal.Type: GrantFiled: June 19, 2012Date of Patent: May 12, 2015Assignee: Motorola Solutions, Inc.Inventors: Spyros Kyperountas, Neiyer S. Correal, Qicai Shi, Charles L. Sobchak
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Patent number: 8837636Abstract: A wireless communication device is provided that is capable of suppressing out-of-channel emissions. The wireless communication device includes an upsampled broadband multicarrier signal generator and multiple upsampled sidelobe signal generators. The upsampled broadband multicarrier signal generator receives a symbol stream and, based on the symbol stream, generates a broadband multicarrier signal comprising an in-channel signal and a first multiple out-of-channel sidelobes. Each upsampled sidelobe signal generator of the multiple upsampled sidelobe signal generators receives at least a portion of the symbol stream and, based on at least a portion of the symbol stream, generates an out-of-channel sidelobes to produce a second multiple out-of-channel sidelobes.Type: GrantFiled: August 31, 2012Date of Patent: September 16, 2014Assignee: Motorola Solutions, Inc.Inventors: Qicai Shi, Neiyer S. Correal, Spyros Kyperountas
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Publication number: 20140064405Abstract: A wireless communication device is provided that is capable of suppressing out-of-channel emissions. The wireless communication device includes an upsampled broadband multicarrier signal generator and multiple upsampled sidelobe signal generators. The upsampled broadband multicarrier signal generator receives a symbol stream and, based on the symbol stream, generates a broadband multicarrier signal comprising an in-channel signal and a first multiple out-of-channel sidelobes. Each upsampled sidelobe signal generator of the multiple upsampled sidelobe signal generators receives at least a portion of the symbol stream and, based on at least a portion of the symbol stream, generates an out-of-channel sidelobes to produce a second multiple out-of-channel sidelobes.Type: ApplicationFiled: August 31, 2012Publication date: March 6, 2014Applicant: MOTOROLA SOLUTIONS, INC.Inventors: Qicai Shi, Neiyer S. Correal, Spyros Kyperountas
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Publication number: 20130337761Abstract: A communication device includes a receiver that is capable of canceling in-channel interference. The receiver includes an antenna for receiving a wireless signal comprising in-channel components and an out-of-channel component, wherein the in-channel components comprise a desired component and an in-channel interference component. A first filter of the receiver filters the wireless signal by blocking at least a portion of the out-of-channel component to produce a first signal comprising the in-channel components, and at least a second filter of the receiver filters the wireless signal by blocking at least a portion of the in-channel components to produce a second signal comprising the out-of-channel component. An in-channel interference estimator of the receiver generates an in-channel interference estimation signal based on the second signal. And a combiner of the filter combines the first signal and the second signal to at least partially cancel the in-channel interference component of the first signal.Type: ApplicationFiled: June 19, 2012Publication date: December 19, 2013Applicant: MOTOROLA SOLUTIONS, INC.Inventors: Spyros Kyperountas, Neiyer S. Correal, Qicai Shi, Charles L. Sobchak
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Publication number: 20130083786Abstract: A method and apparatus for synchronization in a dynamic spectrum access system is provided herein. During operation a transmitter will vary a known sequence to generate a preamble for each radio frame. The variation of the known sequence is based on what particular subcarriers are currently being used by the transmitter. In one embodiment, the preamble is coupled to the filterbank multicarrier synthesis to generate an over-the-air preamble for use in synchronizing a receiver.Type: ApplicationFiled: September 29, 2011Publication date: April 4, 2013Applicant: MOTOROLA SOLUTIONS, INC.Inventors: QICAI SHI, NEIYER S. CORREAL, SPYROS KYPEROUNTAS
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Patent number: 8306561Abstract: A method, wireless device, and information processing system dynamically update spectrum sensing groups in a wireless communication system. A set of wireless devices (114) currently allocated to a spectrum sensing group is identified. Each wireless device (114, 116, 118) in the set performs spectrum sensing on one or more wireless communication channels. Spectrum sensing performance data (144) is analyzed for each such wireless device (114) in the set. The spectrum sensing performance data (144) indicates wireless communication performance of a wireless device (114) associated with the spectrum sensing performance data with respect to detecting a transmitted signal on the one or more communication channels. Wireless device membership of the set of wireless devices (114, 116, 118) allocated to the spectrum sensing group is dynamically adjusted based on the analysis.Type: GrantFiled: February 2, 2009Date of Patent: November 6, 2012Assignee: Motorola Solutions, Inc.Inventors: Spyros Kyperountas, Neiyer S. Correal, Qicai Shi
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Patent number: 8140017Abstract: A cognitive radio wireless device (114) dynamically manages signal detection in a cognitive radio system (100). Spectrum sensing is performed for a first sensing frame on at least one communication channel. At least one observed signal is received (204) on the at least one communication channel. A detection decision (210) is performed to determine if the observed signal is noise or an active signal associated with an active user. The detection decision (210) is performed by comparing observed signal energy estimation with a current detection threshold. The current detection threshold can be an arbitrarily defined threshold or a detection threshold based on a previous detection decision for a sensing frame immediately prior to the first sensing frame.Type: GrantFiled: September 29, 2008Date of Patent: March 20, 2012Assignee: Motorola Solutions, Inc.Inventors: Qicai Shi, Neiyer S. Correal, Spyros Kyperountas, Zhuan Ye
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Publication number: 20100197332Abstract: A method, wireless device, and information processing system dynamically update spectrum sensing groups in a wireless communication system. A set of wireless devices (114) currently allocated to a spectrum sensing group is identified. Each wireless device (114, 116, 118) in the set performs spectrum sensing on one or more wireless communication channels. Spectrum sensing performance data (144) is analyzed for each such wireless device (114) in the set. The spectrum sensing performance data (144) indicates wireless communication performance of a wireless device (114) associated with the spectrum sensing performance data with respect to detecting a transmitted signal on the one or more communication channels. Wireless device membership of the set of wireless devices (114, 116, 118) allocated to the spectrum sensing group is dynamically adjusted based on the analysis.Type: ApplicationFiled: February 2, 2009Publication date: August 5, 2010Applicant: MOTOROLA, INC.Inventors: SPYROS KYPEROUNTAS, NEIYER S. CORREAL, QICAI SHI
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Publication number: 20100081387Abstract: A cognitive radio wireless device (114) dynamically manages signal detection in a cognitive radio system (100). Spectrum sensing is performed for a first sensing frame on at least one communication channel. At least one observed signal is received (204) on the at least one communication channel. A detection decision (210) is performed to determine if the observed signal is noise or an active signal associated with an active user. The detection decision (210) is performed by comparing observed signal energy estimation with a current detection threshold. The current detection threshold can be an arbitrarily defined threshold or a detection threshold based on a previous detection decision for a sensing frame immediately prior to the first sensing frame.Type: ApplicationFiled: September 29, 2008Publication date: April 1, 2010Applicant: MOTOROLA, INC.Inventors: Qicai Shi, Neiyer S. Correal, Spyros Kyperountas, Zhuan Ye
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Patent number: 7570927Abstract: A wireless communication system and method for determination of the location of a location-incapable device of a decentralized wireless communication network. Upon receipt of location determination information, relevant to the location of the location-incapable device in the network and sufficient to perform a calculation of the location of the location-incapable device, a location-capable device of the network may calculate the location of the location-incapable device and make this information available to one or more devices of the network.Type: GrantFiled: June 16, 2006Date of Patent: August 4, 2009Assignee: Motorola, Inc.Inventors: Neiyer S. Correal, Spyros Kyperountas, Qicai Shi
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Patent number: 7548517Abstract: A location technique is utilized where channel-model parameters are originally estimated prior to location taking place. Location then takes place using a first set of known-located nodes, and the channel-model parameters are updated based on the distances resulting from the location estimate. Once the channel-model parameters have been updated, location again takes place using a second set of known-located nodes, node distances are calculated based on the produced locations and the channel-model parameters are again updated. This process continues until no significant change is observed between the previous and the newly estimated location, or until a maximum number of iterations is reached.Type: GrantFiled: April 25, 2005Date of Patent: June 16, 2009Assignee: Motorola, Inc.Inventors: Spyros Kyperountas, Neiyer S. Correal, Feng Niu, Qicai Shi
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Patent number: 7353031Abstract: A method for estimating the location of a blindfolded node (235) in a wireless network having reference nodes (225, 230) is provided. The reference nodes (225, 230) are combined into pairs (301) and each pair is checked to determine if the reference nodes are within each other's communication rage (304). A plurality of probable regions (315) for the blindfolded node are obtained (313, 315). These probable regions are overlapped (320), and the blindfolded node's estimated location is estimated to be the geometric center of the overlapped regions (325).Type: GrantFiled: June 8, 2005Date of Patent: April 1, 2008Assignee: Motorola, Inc.Inventors: Qicai Shi, Neiyer S. Correal, Jian Huang, Spyros Kyperountas
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Publication number: 20070293237Abstract: A wireless communication system and method for determination of the location of a location-incapable device of a decentralized wireless communication network. Upon receipt of location determination information, relevant to the location of the location-incapable device in the network and sufficient to perform a calculation of the location of the location-incapable device, a location-capable device of the network may calculate the location of the location-incapable device and make this information available to one or more devices of the network.Type: ApplicationFiled: June 16, 2006Publication date: December 20, 2007Applicant: MOTOROLA, INC.Inventors: Neiyer S. Correal, Spyros Kyperountas, Qicai Shi
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Patent number: 7274940Abstract: A method and system is provided for determining a location for each of a plurality of units, which are sub-divided into more than one sub-net groupings, that each include two or more units. Within each sub-net grouping, measured range information between units within the sub-nets and one or more reference units is gathered in at least a selected one of the units. The selected one of the units then estimates a location for each of the units, which minimizes any error in the measured ranges between the units in each of the corresponding sub-nets.Type: GrantFiled: December 29, 2003Date of Patent: September 25, 2007Assignee: Motorola, Inc.Inventors: Spyros Kyperountas, Oleg Andric, Neiyer S. Correal, Jian Huang, Feng Niu, Qicai Shi