Patents by Inventor Paul Anthony Polakos
Paul Anthony Polakos 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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Patent number: 11936453Abstract: Multi-User Multiple Input, Multiple Output (MU-MIMO) data transmissions are provided with a forward-predictive precoding matrix to mitigate the effects of a change in a state of a communication channel. First and second soundings are performed, at first and second times, to a receive antenna over a channel and, responsive to each of the soundings, first and second Channel State Information (CSI) are received. Based on the first and second CSI, a change in a state of the channel over a time period between the first and second time is determined. Based on the change in the state of the channel, a forward-predictive channel state matrix and/or a forward-predictive precoding matrix are determined that reflect a state of the channel at a future time and that are consistent with the determined change in the state over the time period. The forward-predictive precoding matrix is applied to a data transmission.Type: GrantFiled: February 2, 2021Date of Patent: March 19, 2024Assignee: Cisco Technology, Inc.Inventors: John Martin Graybeal, Paul Anthony Polakos, Robert Edward Liston, Wai-Tian Tan, Xiaoqing Zhu
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Publication number: 20230362875Abstract: Correcting for antennae spatial distortions in Radio Frequency (RF) localization may be provided. A plurality of actual locations associated with a plurality of Access Point (APs) may be received. Then a plurality of signal strengths associated with the plurality of APs may be received. Based on the plurality of signal strengths, a model may be created that models a plurality of inference errors respectively corresponding to the plurality of APs between a plurality of inferred locations respectively corresponding to the plurality of APs and the plurality of actual locations. The model may then be used in determining a location of a device.Type: ApplicationFiled: May 3, 2022Publication date: November 9, 2023Applicant: Cisco Technology, Inc.Inventors: David A. Maluf, Huy Phuong Tran, Avinash Kalyanaraman, Paul Anthony Polakos
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Publication number: 20230254687Abstract: Correlating devices and clients across addresses may be provided. A first address associated with a client device may be received. When the client device is not connected to a network, first location data associated with the first address may be obtained using a passive technique. A second address and second location data associated with the second address may then be obtained using an active technique. It may then be determined that the first location data and the second location data correlate. In response to determining that the first location data and the second location data correlate, it may be determined that the client device has changed from the first address to the second address.Type: ApplicationFiled: April 17, 2023Publication date: August 10, 2023Applicant: Cisco Technology, Inc.Inventors: John Martin Graybeal, Jerome Henry, Paul Anthony Polakos, Louis Gwyn Samuel, John George Apostolopoulos
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Patent number: 11632671Abstract: Correlating devices and clients across addresses may be provided. A first address associated with a client device may be received. When the client device is not connected to a network, first location data associated with the first address may be obtained using a passive technique. A second address and second location data associated with the second address may then be obtained using an active technique. It may then be determined that the first location data and the second location data correlate. In response to determining that the first location data and the second location data correlate, it may be determined that the client device has changed from the first address to the second address.Type: GrantFiled: March 29, 2021Date of Patent: April 18, 2023Assignee: Cisco Technology, Inc.Inventors: John Martin Graybeal, Jerome Henry, Paul Anthony Polakos, Louis Gwyn Samuel, John George Apostolopoulos
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Publication number: 20220312192Abstract: Correlating devices and clients across addresses may be provided. A first address associated with a client device may be received. When the client device is not connected to a network, first location data associated with the first address may be obtained using a passive technique. A second address and second location data associated with the second address may then be obtained using an active technique. It may then be determined that the first location data and the second location data correlate. In response to determining that the first location data and the second location data correlate, it may be determined that the client device has changed from the first address to the second address.Type: ApplicationFiled: March 29, 2021Publication date: September 29, 2022Applicant: Cisco Technology, Inc.Inventors: John Martin Graybeal, Jerome Henry, Paul Anthony Polakos, Louis Gwyn Samuel, John George Apostolopoulos
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Publication number: 20220247465Abstract: Multi-User Multiple Input, Multiple Output (MU-MIMO) data transmissions are provided with a forward-predictive precoding matrix to mitigate the effects of a change in a state of a communication channel. First and second soundings are performed, at first and second times, to a receive antenna over a channel and, responsive to each of the soundings, first and second Channel State Information (CSI) are received. Based on the first and second CSI, a change in a state of the channel over a time period between the first and second time is determined. Based on the change in the state of the channel, a forward-predictive channel state matrix and/or a forward-predictive precoding matrix are determined that reflect a state of the channel at a future time and that are consistent with the determined change in the state over the time period. The forward-predictive precoding matrix is applied to a data transmission.Type: ApplicationFiled: February 2, 2021Publication date: August 4, 2022Applicant: Cisco Technology, Inc.Inventors: John Martin GRAYBEAL, Paul Anthony POLAKOS, Robert Edward LISTON, Wai-Tian TAN, Xiaoqing ZHU
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Patent number: 9413886Abstract: The present invention provides a method for implementation in a first mobile unit that supports an air interface with a network element. The method includes determining, while the first mobile unit is participating in a call, that at least one channel associated with the air interface is unable to support voice transmission. The method also includes rendering a first user-detectable signal in response to determining that said at least one channel is unable to support voice transmission.Type: GrantFiled: October 30, 2007Date of Patent: August 9, 2016Assignee: Alcatel LucentInventors: Peter Bosch, Paul Anthony Polakos
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Patent number: 9161205Abstract: The present invention provides a method of route optimization. The method may include obtaining a packet associated with a first address associated, by a home agent, with a first mobile unit and routing the packet to a second address associated with a second mobile unit along a forward link of a communication path that bypasses the home agent.Type: GrantFiled: February 14, 2006Date of Patent: October 13, 2015Assignee: Alcatel LucentInventors: Peter Bosch, Paul Anthony Polakos, Ajay Rajkumar, Sampath Rangarajan
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Patent number: 8374124Abstract: The invention includes methods and apparatuses for supporting mobility management and packet routing in ad hoc wireless networks. A method for mobility management includes detecting, at a first base station, a request by a wireless device to establish an association with the first base station where the first base station comprises a mobile base station, updating an association table of the first base station to include an association of the wireless device to the first base station, and propagating, toward a second base station, a message adapted to update an association table of the second base station, wherein the second base station is a mobile base station, wherein the message is propagated toward the second base station wirelessly. The packet routing functions of the present invention may be used independent of, or in conjunction with, the mobility management functions of the present invention.Type: GrantFiled: June 30, 2007Date of Patent: February 12, 2013Assignee: Alcatel LucentInventors: David Abusch-Magder, Peter Bosch, Milind M. Buddhikot, Thierry Etienne Klein, Paul Anthony Polakos, Harish Viswanathan
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Patent number: 7826849Abstract: The present invention provides a method of operating a first base station router. The method may include transmitting state information associated with at least one inactive mobile unit to at least one second base station router. The state information is usable to initiate an active session with the at least one inactive mobile unit. The first base station router retains the state information for initiating an active session with the at least one inactive mobile unit and the least one second base station router is capable of initiating an active session with the at least one inactive mobile unit based on the state information when the state information is unavailable to the first base station router.Type: GrantFiled: April 30, 2007Date of Patent: November 2, 2010Assignee: Alcatel-Lucent USA Inc.Inventors: Peter Bosch, Sape J. Mullender, Paul Anthony Polakos, Ajay Rajkumar, Ganapathy S. Sundaram
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Patent number: 7680075Abstract: The identification of wireless communication base stations in a region of high base station density is effected using a specific identification signal pattern transmitted by the base stations. In particular, each base station transmits a signal having a pattern with at least two time phase shifts relative to at least one time benchmark. The combination of these phase shifts allows identification of the transmitting base station. Since a plurality of phase shifts leads to a concomitantly larger number of phase shift combinations, the capacity to identify base stations is enlarged.Type: GrantFiled: May 17, 2006Date of Patent: March 16, 2010Assignee: Alcatel-Lucent USA Inc.Inventors: Zhengxiang Ma, Paul Anthony Polakos
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Publication number: 20090111460Abstract: The present invention provides a method for implementation in a first mobile unit that supports an air interface with a network element. The method includes determining, while the first mobile unit is participating in a call, that at least one channel associated with the air interface is unable to support voice transmission. The method also includes rendering a first user-detectable signal in response to determining that said at least one channel is unable to support voice transmission.Type: ApplicationFiled: October 30, 2007Publication date: April 30, 2009Inventors: Peter Bosch, Paul Anthony Polakos
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Publication number: 20080268853Abstract: The present invention provides a method of operating a first base station router. The method may include transmitting state information associated with at least one inactive mobile unit to at least one second base station router. The state information is usable to initiate an active session with the at least one inactive mobile unit.Type: ApplicationFiled: April 30, 2007Publication date: October 30, 2008Inventors: Peter Bosch, Sape J. Mullender, Paul Anthony Polakos, Ajay Rajkumar, Ganapathy S. Sundaram
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Publication number: 20080192677Abstract: The invention includes methods and apparatuses for supporting mobility management and packet routing in ad hoc wireless networks. A method for mobility management includes detecting, at a first base station, a request by a wireless device to establish an association with the first base station where the first base station comprises a mobile base station, updating an association table of the first base station to include an association of the wireless device to the first base station, and propagating, toward a second base station, a message adapted to update an association table of the second base station, wherein the second base station is a mobile base station, wherein the message is propagated toward the second base station wirelessly. The packet routing functions of the present invention may be used independent of, or in conjunction with, the mobility management functions of the present invention.Type: ApplicationFiled: June 30, 2007Publication date: August 14, 2008Inventors: David Abusch-Magder, Peter Bosch, Milind M. Buddhikot, Thierry Etienne Klein, Paul Anthony Polakos, Harish Viswanathan
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Publication number: 20070268853Abstract: The identification of wireless communication base stations in a region of high base station density is effected using a specific identification signal pattern transmitted by the base stations. In particular, each base station transmits a signal having a pattern with at least two time phase shifts relative to at least one time benchmark. The combination of these phase shifts allows identification of the transmitting base station. Since a plurality of phase shifts leads to a concomitantly larger number of phase shift combinations, the capacity to identify base stations is enlarged.Type: ApplicationFiled: May 17, 2006Publication date: November 22, 2007Inventors: Zhengxiang Ma, Paul Anthony Polakos
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Patent number: 7054384Abstract: A method and transmitter for amplifying at least first and second diversity-encoded signals, where each of the first and second diversity-encoded signals may represent information of a first signal to be transmitted using transmit diversity. Amplification of the first and second diversity-encoded signals may be shared between at least two amplifiers, and amplification for a second signal, to be amplified and transmitted without using transmit diversity, may be shared between the at least two amplifiers.Type: GrantFiled: August 4, 2000Date of Patent: May 30, 2006Assignee: Lucent Technologies Inc.Inventors: Zhengxiang Ma, Paul Anthony Polakos
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Patent number: 7042955Abstract: Described herein is a method and apparatus for transmission that provides the performance of space time spreading (STS) or orthogonal transmit diversity (OTD) and the backwards compatibility of phase sweep transmit diversity (PSTD) without significantly degrading performance in additive white guassan noise (AWGN) conditions using a transmission architecture that incorporates STS/OTD and a form of phase sweep transmit diversity (PSTD) referred to herein as biased PSTD, which involves transmitting a signal and a frequency swept version of the same signal over diversity antennas at different power levels to reduce the depths of nulls normally seen in AWGN conditions when regular PSTD is utilized.Type: GrantFiled: July 30, 2001Date of Patent: May 9, 2006Assignee: Lucent Technologies Inc.Inventors: Roger David Benning, R. Michael Buehrer, Mark H Kraml, Paul Anthony Polakos
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Patent number: 6980778Abstract: Disclosed is a method and apparatus of transmit diversity that is backward compatible and does not degrade performance using a transmission architecture that incorporates a form of phase sweep transmit diversity (PSTD) referred to herein as split shift PSTD. Split shift PSTD involves transmitting at least two phase swept versions of a signal over diversity antennas, wherein the two phase swept versions of the signal have a different phase. The phase sweep frequency signals may have a fixed or varying phase shifting rate, may have an identical or different phase shifting rate, may be offset from each other and/or may be phase shifting in the same or opposite direction.Type: GrantFiled: July 30, 2001Date of Patent: December 27, 2005Assignee: Lucent Technologies Inc.Inventors: Roger David Benning, R. Michael Buehrer, Paul Anthony Polakos, Robert Atmaram Soni
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Patent number: 6925066Abstract: Techniques for use in designing, adjusting or operating a wireless network so as to provide a desired level of performance for the network. An optimization process is applied to a set of information characterizing the network. The optimization process is implemented as a multi-stage process which includes at least a frequency assignment stage and a post-frequency-assignment optimization stage, wherein the frequency assignment stage and the post-frequency-assignment stage are subject to iteration. For example, after an initial assignment of the frequencies in the frequency assignment stage, the post-frequency-assignment optimization stage may be performed, and based on the result of the optimization, at least one of the frequency assignment stage and the post-frequency-assignment optimization stage may be repeated. An output of the optimization process is utilized to determine one or more operating parameters of the wireless network, such as a base station transmit power or antenna orientation.Type: GrantFiled: July 31, 2000Date of Patent: August 2, 2005Assignee: Lucent Technologies Inc.Inventors: Chandra S. Chekuri, Lawrence M. Drabeck, Karl Georg Hampel, Paul Anthony Polakos, Yihao Lisa Zhang
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Patent number: 6920314Abstract: Described herein is a method and apparatus for transmission that provides the performance of space time spreading (STS) or orthogonal transmit diversity (OTD) and the backwards compatibility of phase sweep transmit diversity (PSTD) without degrading performance of either STS or PSTD using a symmetric sweep PSTD transmission architecture. In one embodiment, a pair of signals s1 and s2 are split into signals s1(a) and s1(b) and signals s2(a) and s2(b), respectively. Signal s1 comprises a first STS/OTD signal belonging to an STS/OTD pair, and signal s2 comprises a second STS/OTD signal belonging to the STS/OTD pair. Signals s1(b) and s2(b) are phase swept using a pair of phase sweep frequency signals that would cancel out any self induced interference. For example, the pair of phase sweep frequency signals utilize a same phase sweep frequency with one of the phase sweep frequency signals rotating in the opposite direction plus an offset of ? relative to the other phase sweep frequency signal.Type: GrantFiled: July 30, 2001Date of Patent: July 19, 2005Assignee: Lucent Technologies Inc.Inventors: Roger David Benning, R. Michael Buehrer, Paul Anthony Polakos, Robert Atmaram Soni