Patents by Inventor Subramanian S. Meiyappan
Subramanian S. Meiyappan 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: 11848723Abstract: Systems and methods of testing cables are provided. An exemplary testing system for testing radio frequency (RF) cables in a telecommunication system including a cable under test includes a termination element configured to be coupled to a distal end of the cable under test; and a controller in communication with the termination element, wherein the controller switches the termination element between two or more termination states selected from the group consisting of an open termination state, a short termination state, a load termination state, and a through state.Type: GrantFiled: May 4, 2022Date of Patent: December 19, 2023Assignee: ECSite, Inc.Inventor: Subramanian S Meiyappan
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Publication number: 20230308130Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.Type: ApplicationFiled: May 26, 2023Publication date: September 28, 2023Applicant: NextNav, LLCInventors: Arun RAGHUPATHY, Ganesh PATTABIRAMAN, Subramanian S. MEIYAPPAN, Hari SANKAR
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Patent number: 11705936Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.Type: GrantFiled: August 31, 2021Date of Patent: July 18, 2023Inventors: Arun Raghupathy, Ganesh Pattabiraman, Subramanian S. Meiyappan, Hari Sankar
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Publication number: 20230128825Abstract: Systems and methods are provided for accurately tracking physical objects such as telecommunications equipment. In example embodiments, a blockchain is provided for accurately tracking physical objects such as telecommunications equipment.Type: ApplicationFiled: October 24, 2022Publication date: April 27, 2023Inventor: Subramanian S. Meiyappan
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Publication number: 20220360294Abstract: Systems and methods of testing cables are provided. An exemplary testing system for testing radio frequency (RF) cables in a telecommunication system including a cable under test includes a termination element configured to be coupled to a distal end of the cable under test; and a controller in communication with the termination element, wherein the controller switches the termination element between two or more termination states selected from the group consisting of an open termination state, a short termination state, a load termination state, and a through state.Type: ApplicationFiled: May 4, 2022Publication date: November 10, 2022Inventor: SUBRAMANIAN S. MEIYAPPAN
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Publication number: 20220326340Abstract: Systems and methods of radio frequency data mapping are provided. An exemplary method includes moving a mobile mapping system through the environment, the mobile mapping system comprising a location detection element and a radio frequency (RF) instrument which receives data from an antenna of the mobile mapping system; collecting data from the RF instrument at one or more collection locations within the environment, the collected data including received signal strength indicator (RSSI) data; mapping the collected data at least in part based on data received from the location detection element and the RF instrument to form an RF fingerprint of the environment; and using the mapped data to confirm an anticipated environmental RF fingerprint associated with the environment, adjust one or more RF components associated with the environment, or both.Type: ApplicationFiled: April 13, 2022Publication date: October 13, 2022Inventor: Subramanian S. Meiyappan
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Publication number: 20210409066Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.Type: ApplicationFiled: August 31, 2021Publication date: December 30, 2021Applicant: NextNav, LLCInventors: Arun RAGHUPATHY, Ganesh PATTABIRAMAN, Subramanian S. MEIYAPPAN, Hari SANKAR
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Patent number: 11115078Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.Type: GrantFiled: February 6, 2020Date of Patent: September 7, 2021Assignee: NextNav, LLCInventors: Arun Raghupathy, Ganesh Pattabiraman, Subramanian S. Meiyappan, Hari Sankar
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Publication number: 20200212955Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.Type: ApplicationFiled: February 6, 2020Publication date: July 2, 2020Inventors: ARUN RAGHUPATHY, GANESH PATTABIRAMAN, SUBRAMANIAN S. MEIYAPPAN, HARI SANKAR
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Patent number: 10649090Abstract: Positioning systems and methods for estimating an altitude of a receiver. In some embodiments, pressure and temperature information from a network of sensors is received by the receiver, and the pressure and temperature information from the network of sensors is used along with pressure information measured at a position of the receiver to estimate the altitude of the receiver.Type: GrantFiled: September 15, 2017Date of Patent: May 12, 2020Assignee: NextNav, LLCInventors: Arun Raghupathy, Subramanian S Meiyappan, Thomas Wolf
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Patent number: 10608695Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.Type: GrantFiled: July 27, 2017Date of Patent: March 31, 2020Assignee: NetNav, LLCInventors: Arun Raghupathy, Ganesh Pattabiraman, Subramanian S. Meiyappan
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Patent number: 10470129Abstract: Reducing power consumption of a receiver in association with estimating the receiver's position using ranging signals. Systems and methods may determine power reduction strategy information, identify a power reduction strategy using the determined power reduction strategy information, and place one or more modules of the receiver into a reduced power state using the identified power reduction strategy. The power reduction strategy may result in powering off different circuitry of the receiver at different times, and under different circumstances.Type: GrantFiled: December 14, 2018Date of Patent: November 5, 2019Assignee: NextNav, LLCInventors: Arun Raghupathy, Subramanian S. Meiyappan
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Publication number: 20190141635Abstract: Reducing power consumption of a receiver in association with estimating the receiver's position using ranging signals. Systems and methods may determine power reduction strategy information, identify a power reduction strategy using the determined power reduction strategy information, and place one or more modules of the receiver into a reduced power state using the identified power reduction strategy. The power reduction strategy may result in powering off different circuitry of the receiver at different times, and under different circumstances.Type: ApplicationFiled: December 14, 2018Publication date: May 9, 2019Applicant: NextNav, LLCInventors: ARUN RAGHUPATHY, SUBRAMANIAN S. MEIYAPPAN
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Patent number: 10231201Abstract: Synchronizing the local time of beacons. Systems and methods discipline a high-stability local clock of a designated beacon within a geographic region to a network time, and synchronize a local clock of another beacon within the geographic region to the network time.Type: GrantFiled: April 25, 2017Date of Patent: March 12, 2019Assignee: NextNav, LLCInventors: Subramanian S. Meiyappan, Wouter Pelgrum, Arun Raghupathy
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Patent number: 10194395Abstract: Reducing power consumption of a receiver in association with estimating the receiver's position using ranging signals. Systems and methods may determine power reduction strategy information, identify a power reduction strategy using the determined power reduction strategy information, and place one or more modules of the receiver into a reduced power state using the identified power reduction strategy. The power reduction strategy may result in powering off different circuitry of the receiver at different times, and under different circumstances.Type: GrantFiled: April 13, 2017Date of Patent: January 29, 2019Assignee: NextNav, LLCInventors: Arun Raghupathy, Subramanian S. Meiyappan
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Patent number: 10175945Abstract: Systems and methods for improving correlation. In at least one system and method, a signal is received and divided into a plurality of slices. Each of the slices is divided into a plurality of sub-slices. A plurality of chips of a PN code are generated, and sub-slice correlation results are generated in parallel. Summation of the sub-slice correlation results generates a slice correlation results, and the accumulated slice correlation results provide a correlation result.Type: GrantFiled: April 19, 2017Date of Patent: January 8, 2019Assignee: NextNav, LLCInventors: Vikram V. Kalkunte, Subramanian S. Meiyappan
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Publication number: 20180227868Abstract: Synchronizing the local time of beacons using two way time transfer methods and hardware enabling such methods. Certain systems incorporate receive hardware into beacon circuitry used for transmitting signals so that the beacon can transmit RF signals during transmission periods, and can also receive RF signals from other beacons during non-transmission periods. Receive hardware may be incorporated into beacon circuitry such that the beacon receives an incoming signal and passes that incoming signal to a digital pre-distortion linearization module, which can process that received signal.Type: ApplicationFiled: March 30, 2018Publication date: August 9, 2018Inventors: Arun Raghupathy, Subramanian S. Meiyappan
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Patent number: 9967845Abstract: Synchronizing the local time of beacons using two way time transfer methods and hardware enabling such methods. Certain systems incorporate receive hardware into beacon circuitry used for transmitting signals so that the beacon can transmit RF signals during transmission periods, and can also receive RF signals from other beacons during non-transmission periods. Receive hardware may be incorporated into beacon circuitry such that the beacon receives an incoming signal and passes that incoming signal to a digital pre-distortion linearization module, which can process that received signal. Methods for controlling whether a beacon transmits RF signals or receives RF signals are also discussed, as are methods for using RF signals received from other beacons for synchronization.Type: GrantFiled: November 30, 2015Date of Patent: May 8, 2018Assignee: NextNav, LLCInventors: Arun Raghupathy, Subramanian S. Meiyappan
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Publication number: 20180095176Abstract: Positioning systems and methods for estimating an altitude of a receiver. In some embodiments, pressure and temperature information from a network of sensors is received by the receiver, and the pressure and temperature information from the network of sensors is used along with pressure information measured at a position of the receiver to estimate the altitude of the receiver.Type: ApplicationFiled: September 15, 2017Publication date: April 5, 2018Inventors: ARUN RAGHUPATHY, SUBRAMANIAN S MEIYAPPAN, THOMAS WOLF
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Publication number: 20170366219Abstract: Systems and methods for improving correlation. In at least one system and method, a signal is received and divided into a plurality of slices. Each of the slices is divided into a plurality of sub-slices. A plurality of chips of a PN code are generated, and sub-slice correlation results are generated in parallel. Summation of the sub-slice correlation results generates a slice correlation results, and the accumulated slice correlation results provide a correlation result.Type: ApplicationFiled: April 19, 2017Publication date: December 21, 2017Inventors: VIKRAM V. KALKUNTE, SUBRAMANIAN S. MEIYAPPAN