Patents by Inventor Karthik UPADHYA
Karthik UPADHYA 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: 20240178902Abstract: According to an aspect, there is provided an apparatus for performing the following. The apparatus obtains predicted Doppler spectrum information for a propagation channel between a first terminal device and one of an access node or a second terminal device calculated using a radio-aware digital twin. The predicted Doppler spectrum information includes information on one or more Doppler frequencies of a predicted Doppler spectrum resulting from reflections from one or more terminal devices capable of movement under control of the digital twin. The apparatus causes performing of measurements of one or more reference signals by a device associated with the propagation channel to a form a channel estimate. The apparatus calculates a measured Doppler spectrum based on the channel estimate and filters out the one or more Doppler frequencies from it. The apparatus adjusts a beam refinement interval of the device based on the filtered measured Doppler spectrum.Type: ApplicationFiled: November 2, 2023Publication date: May 30, 2024Inventors: Andrea BEDIN, Paolo BARACCA, Karthik UPADHYA, Mikko Aleksi UUSITALO, Martti Johannes MOISIO
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Patent number: 11962379Abstract: Examples of the disclosure relate to receiver apparatus and corresponding transmitter apparatus that can be configured in different operational states at different times. An example receiver apparatus comprises a plurality of downconverting means for downconverting separate antenna signals, one or more analog to digital converters, and one or more multiplexing means configurable in at least a first configuration and a second configuration. When the multiplexing means is configured in the first configuration the plurality of downconverting means and the one or more analog to digital converters are configured to enable separate antenna signals to be combined to provide hybrid beamforming or analog beamforming. The hybrid beamforming or analog beamforming can be provided across the bandwidth of the apparatus.Type: GrantFiled: October 31, 2022Date of Patent: April 16, 2024Assignee: NOKIA TECHNOLOGIES OYInventors: Andrea Bedin, Dani Johannes Korpi, Karthik Upadhya, Mikko Aleksi Uusitalo
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Publication number: 20240007961Abstract: As solution for selection of power control parameters is presented. The solution comprises determining, from a given set of radio access network parameters, a selection of radio access network parameters which have an effect on uplink power control, and training a neural network to determine uplink power control parameters, utilising as an input the selection of radio access network parameter, and utilising the trained neural network, with as an input the selection of radio access network parameters, obtain as an output a set of initial uplink power control parameters.Type: ApplicationFiled: August 2, 2023Publication date: January 4, 2024Inventors: Dani Johannes KORPI, Martti Johannes MOISIO, Karri LINDEMAN, Mikko Aleksi UUSITALO, Karthik UPADHYA
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Patent number: 11800458Abstract: As solution for selection of power control parameters is presented. The solution comprises determining, from a given set of radio access network parameters, a selection of radio access network parameters which have an effect on uplink power control, and training a neural network to determine uplink power control parameters, utilising as an input the selection of radio access network parameter, and utilising the trained neural network, with as an input the selection of radio access network parameters, obtain as an output a set of initial uplink power control parameters.Type: GrantFiled: December 2, 2022Date of Patent: October 24, 2023Assignee: NOKIA SOLUTIONS AND NETWORKS OYInventors: Dani Johannes Korpi, Martti Johannes Moisio, Karri Lindeman, Mikko Aleksi Uusitalo, Karthik Upadhya
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Publication number: 20230291462Abstract: An apparatus, method and computer program is described comprising: determining a first desired formation for a plurality of objects in accordance with a communication performance algorithm, wherein the plurality of objects are in communication with a first communication node; and instructing the objects of the plurality to move to respective object positions of the first desired formation in a first mode of operation.Type: ApplicationFiled: January 6, 2020Publication date: September 14, 2023Inventors: Tero Johannes IHALAINEN, Martti Johannes MOISIO, Mikko Aleksi UUSITALO, Karthik UPADHYA
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Publication number: 20230254833Abstract: A solution for radio jamming detection is disclosed. The solution comprises determining M subcarriers in a time-frequency resource grid to be blanked and outputting the M subcarriers in the time-frequency resource grid to be blanked by performing at least one of the following operations: first determination of a number M of subcarriers in a time-frequency resource grid to be blanked based on probability of detecting a jammer attack or on channel quality of subcarriers in the time-frequency resource grid, second determination of which M subcarriers in the time-frequency resource grid are blanked taking into account the channel quality of subcarriers in the time-frequency resource grid.Type: ApplicationFiled: February 7, 2023Publication date: August 10, 2023Inventors: Paolo BARACCA, Leonardo CHIARELLO, Karthik UPADHYA
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Publication number: 20230246728Abstract: Embodiments of the present disclosure relate to device, method, apparatus and computer readable storage media of reactive jamming detection. The method comprises in accordance with a determination that an interference to the first device is to be detected, determining at least one set of actual receiving powers at the first device on a bandwidth and a frequency of a channel associated with a transmission of the first device within a time interval; determining at least one set of reference receiving powers at the first device on the bandwidth and the frequency; and in accordance with a determination that a difference between the at least one set of reference receiving powers and the at least one set of actual receiving powers exceeds a threshold difference, determining the first device is interfered by reactive jamming.Type: ApplicationFiled: June 25, 2020Publication date: August 3, 2023Inventors: Paolo BARACCA, Karthik UPADHYA, Saeed KHOSRAVIRAD, Tao TAO, Lorenzo GALATI GIORDANO
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Publication number: 20230231644Abstract: There is disclosed an apparatus. The apparatus comprises means for performing: in response to detecting a jamming signal, obtaining a sample waveform of the jamming signal; and sending information of the jamming signal to another apparatus.Type: ApplicationFiled: June 1, 2020Publication date: July 20, 2023Inventors: Dani Johannes KORPI, Karthik UPADHYA, Martti Johannes MOISIO, Tero Johannes IHALAINEN, Mikko Aleksi UUSITALO
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Patent number: 11700023Abstract: An apparatus comprises: a first plurality of first radio frequency chains; a second plurality of second radio frequency chains, the first radio frequency chains being configured to produce wider side-band emissions than the second radio frequency chains; at least one antenna array comprising antenna elements, each of a first plurality of the antenna elements being coupled with a corresponding one of the first plurality of first radio frequency chains, the first plurality of first radio frequency chains being configured to cause transmissions predominately in a first band within a channel, each of a second plurality of the antenna elements being coupled with a corresponding one of the second plurality of second radio frequency chains, the second plurality of second radio frequency chains being configured to cause transmissions predominately in at least one second band within the channel.Type: GrantFiled: September 10, 2021Date of Patent: July 11, 2023Assignee: NOKIA TECHNOLOGIES OYInventors: Karthik Upadhya, Carl Nuzman, Alexei Ashikhmin, Stefan Wesemann, Hong Yang
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Publication number: 20230216555Abstract: Antenna arrays to be used in MIMO apparatuses are disclosed. Such an antenna array may include a plurality of array elements, wherein every second element in a first direction is a digital pre-distortion-less linear element, and every second element in the first direction is a non-linear element. In the antenna array, spacing between adjacent elements in the first direction is less than a half of a free space wavelength. A non-linear precoding is applied to transmissions from the antenna array, the non-linear precoding converting out-of-band emissions of the transmissions into reactive power in the near-field around the antenna array while ensuring that in-band signals generated by the elements remain unaffected.Type: ApplicationFiled: January 5, 2023Publication date: July 6, 2023Inventor: Karthik Upadhya
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Publication number: 20230189160Abstract: As solution for selection of power control parameters is presented. The solution comprises determining, from a given set of radio access network parameters, a selection of radio access network parameters which have an effect on uplink power control, and training a neural network to determine uplink power control parameters, utilising as an input the selection of radio access network parameter, and utilising the trained neural network, with as an input the selection of radio access network parameters, obtain as an output a set of initial uplink power control parameters.Type: ApplicationFiled: December 2, 2022Publication date: June 15, 2023Inventors: Dani Johannes KORPI, Martti Johannes MOISIO, Karri LINDEMAN, Mikko Aleksi UUSITALO, Karthik UPADHYA
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Patent number: 11671187Abstract: An apparatus and method is disclosed, in which the apparatus comprising circuitry configured for: estimating or determining a future communications state for each of a plurality a mobile devices K associated with a base station, the future communications state being indicative of the mobile device communicating in an uplink to a base station or in a downlink from the base station at a future time slot t or being idle and also determining a target position of at least one of the mobile devices, based at least partly on its estimated communication state, for enabling re-positioning of said at least one mobile device to the determined target position substantially at said future time slot t.Type: GrantFiled: March 4, 2021Date of Patent: June 6, 2023Assignee: Nokia Technolgies OyInventors: Karthik Upadhya, Martti Moisio, Dani Korpi, Tero Ihalainen, Mikko Uusitalo
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Publication number: 20230135015Abstract: Examples of the disclosure relate to receiver apparatus and corresponding transmitter apparatus that can be configured in different operational states at different times. An example receiver apparatus comprises a plurality of downconverting means for downconverting separate antenna signals, one or more analog to digital converters, and one or more multiplexing means configurable in at least a first configuration and a second configuration. When the multiplexing means is configured in the first configuration the plurality of downconverting means and the one or more analog to digital converters are configured to enable separate antenna signals to be combined to provide hybrid beamforming or analog beamforming. The hybrid beamforming or analog beamforming can be provided across the bandwidth of the apparatus.Type: ApplicationFiled: October 31, 2022Publication date: May 4, 2023Applicant: Nokia Technologies OyInventors: Andrea BEDIN, Dani Johannes KORPI, Karthik UPADHYA, Mikko Aleksi UUSITALO
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Patent number: 11546202Abstract: An apparatus is provided that includes circuitry for decomposing an input signal to multiple substantially constant-envelope components and an outphasing path for each substantially constant-envelope component. The apparatus also includes a modulator for discrete phase control in each outphasing path, an amplifier in each outphasing path and a combiner for combining output signals from the outphasing paths. A system and method are also provided.Type: GrantFiled: February 24, 2021Date of Patent: January 3, 2023Assignee: NOKIA SOLUTIONS AND NETWORKS OYInventors: Karthik Upadhya, Stefan Wesemann
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Publication number: 20220352973Abstract: An apparatus is disclosed, the apparatus comprising a means for receiving selection of a relay system associated with a base station (10) of a communications network, the relay system comprising a first antenna (15) for substantially fixed orientation towards an antenna (12) of the base station and a second antenna (16) which is mechanically movable about one or more axes responsive to the control data to provide one of a range of possible orientations. The apparatus may also comprise a means for sending control data to the selected relay system for controlling the orientation of the second antenna, the control data comprising at least positioning instructions received from a node of the communications network for causing positioning of the second antenna to a particular orientation associated with a mobile target object (19).Type: ApplicationFiled: September 21, 2020Publication date: November 3, 2022Inventors: Karthik UPADHYA, Mikko Aleksi UUSITALO, Martti Johannes MOISIO, Tero Johannes IHALAINEN, Dani Johannes KORPI
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Patent number: 11431435Abstract: This document discloses a solution for performing anti-jamming procedures. According to an aspect, a method for a terminal device comprises: receiving a first reference signal allocation from an access node, wherein the first reference signal is unique to the terminal device in a cell managed by the access node; receiving a second reference signal allocation from the access node, wherein the second reference signal is shared with at least one other terminal device in the cell; causing transmission of payload data together with the first reference signal according to a regular transmission pattern; and breaking the regular transmission pattern by transmitting dummy data together with the second reference signal in a time-frequency resource shared with the at least one other terminal device.Type: GrantFiled: January 12, 2022Date of Patent: August 30, 2022Assignee: NOKIA TECHNOLOGIES OYInventors: Karthik Upadhya, Tero Johannes Ihalainen, Dani Johannes Korpi, Martti Johannes Moisio, Mikko Aleksi Uusitalo, Paolo Baracca, Saeed Reza Khosravirad
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Publication number: 20220247511Abstract: This document discloses a solution for performing anti-jamming procedures. According to an aspect, a method for a terminal device comprises: receiving a first reference signal allocation from an access node, wherein the first reference signal is unique to the terminal device in a cell managed by the access node; receiving a second reference signal allocation from the access node, wherein the second reference signal is shared with at least one other terminal device in the cell; causing transmission of payload data together with the first reference signal according to a regular transmission pattern; and breaking the regular transmission pattern by transmitting dummy data together with the second reference signal in a time-frequency resource shared with the at least one other terminal device.Type: ApplicationFiled: January 12, 2022Publication date: August 4, 2022Inventors: Karthik UPADHYA, Tero Johannes IHALAINEN, Dani Johannes KORPI, Martti Johannes MOISIO, Mikko Aleksi UUSITALO, Paolo BARACCA, Saeed Reza KHOSRAVIRAD
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Publication number: 20220085833Abstract: An apparatus comprises: a first plurality of first radio frequency chains; a second plurality of second radio frequency chains, the first radio frequency chains being configured to produce wider side-band emissions than the second radio frequency chains; at least one antenna array comprising antenna elements, each of a first plurality of the antenna elements being coupled with a corresponding one of the first plurality of first radio frequency chains, the first plurality of first radio frequency chains being configured to cause transmissions predominately in a first band within a channel, each of a second plurality of the antenna elements being coupled with a corresponding one of the second plurality of second radio frequency chains, the second plurality of second radio frequency chains being configured to cause transmissions predominately in at least one second band within the channel.Type: ApplicationFiled: September 10, 2021Publication date: March 17, 2022Applicant: NOKIA TECHNOLOGIES OYInventors: Karthik UPADHYA, Carl NUZMAN, Alexei ASHIKHMIN, Stefan WESEMANN, Hong YANG
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Publication number: 20210281336Abstract: An apparatus and method is disclosed, in which the apparatus comprising circuitry configured for: estimating or determining a future communications state for each of a plurality a mobile devices K associated with a base station, the future communications state being indicative of the mobile device communicating in an uplink to a base station or in a downlink from the base station at a future time slot t or being idle and also determining a target position of at least one of the mobile devices, based at least partly on its estimated communication state, for enabling re-positioning of said at least one mobile device to the determined target position substantially at said future time slot t.Type: ApplicationFiled: March 4, 2021Publication date: September 9, 2021Inventors: Karthik UPADHYA, Martti Moisio, Dani Korpi, Tero Ihalainen, Mikko Uusitalo
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Publication number: 20210273841Abstract: An apparatus is provided that includes circuitry for decomposing an input signal to multiple substantially constant-envelope components and an outphasing path for each substantially constant-envelope component. The apparatus also includes a modulator for discrete phase control in each outphasing path, an amplifier in each outphasing path and a combiner for combining output signals from the outphasing paths. A system and method are also provided.Type: ApplicationFiled: February 24, 2021Publication date: September 2, 2021Applicant: NOKIA SOLUTIONS AND NETWORKS OYInventors: Karthik UPADHYA, Stefan WESEMANN