Patents by Inventor Udara Fernando
Udara Fernando 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: 11310747Abstract: Methods and apparatus for distinguishing between an antenna of a user equipment (UE) being blocked by a cover (e.g., a protective rubber or plastic case) or by human tissue (e.g., a finger or palm). The transmission power of uplink (UL) signals may be adjusted accordingly, with relatively higher transmission power for open space or a cover and relatively lower transmission power for human tissue. One example method for wireless communications by a UE generally includes transmitting a first signal from the UE, receiving a plurality of signals at the UE based on the transmitted first signal, determining values for at least two different types of parameters based on the received plurality of signals, determining an environmental scenario for the UE based on the values for the at least two different types of parameters, and transmitting a second signal using a transmission power based on the determined environmental scenario.Type: GrantFiled: June 11, 2020Date of Patent: April 19, 2022Assignee: QUALCOMM IncorporatedInventors: Seunghwan Kim, Udara Fernando, Eyosias Yoseph Imana, Robert Gilmore
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Publication number: 20220066011Abstract: An apparatus is disclosed for proximity detection using multiple power levels. In an example aspect, the apparatus includes a first antenna, a second antenna, and a wireless transceiver coupled to the first antenna and the second antenna. The wireless transceiver is configured to transmit multiple transmit signals at multiple power levels via the first antenna. The wireless transceiver is also configured to receive multiple receive signals via the second antenna. At least one receive signal of the multiple receive signals includes a portion of at least one transmit signal of the multiple transmit signals that is reflected by an object. The wireless transceiver is additionally configured to adjust a transmission parameter based on the at least one receive signal. The transmission parameter varies according to a range to the object.Type: ApplicationFiled: November 8, 2021Publication date: March 3, 2022Inventors: Mustafa Emin Sahin, Udara Fernando, Roberto Rimini, Raghu Challa, Seunghwan Kim
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Patent number: 11265055Abstract: An apparatus is disclosed for flexible beamforming using frequency-division multiplexing. In an example aspect, an apparatus includes an antenna array and a wireless transceiver with two or more dedicated receive paths respectively coupled to two or more antenna elements of the antenna array, two or more mixers, a first combiner, a second combiner, and a switching circuit. The first combiner has a first input coupled to a first dedicated receive path and an output coupled to an input of a first mixer. The second combiner has a first input coupled to an output of the first mixer and a second input coupled to an output of a second mixer. The switching circuit is configured to selectively connect a second dedicated receive path to a second input of the first combiner or connect the second dedicated receive path to an input of the second mixer.Type: GrantFiled: June 24, 2020Date of Patent: March 1, 2022Assignee: QUALCOMM IncorporatedInventors: Udara Fernando, Juergen Cezanne, Joseph Patrick Burke, Dai Lu
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Publication number: 20210373127Abstract: Methods, systems, computer-readable media, and apparatuses for determining one or more attributes of at least one target based on eigenspace analysis of radar signals are presented. In some embodiments, a subset of eigenvectors to use for forming a signal or noise subspace is identified based on principal component analysis. In some embodiments, the subset of eigenvectors is identified based on estimating the total number of targets using a discrete Fourier transform (DFT) or other spectral analysis technique. In some embodiments, a DFT is used to identify areas of interest in which to perform eigenspace analysis. In some embodiments, a DFT is used to estimate one attribute of a target, and eigenspace analysis is performed to estimate a different attribute of the target, with the results being combined to generate a multi-dimensional representation of a field of view.Type: ApplicationFiled: May 27, 2020Publication date: December 2, 2021Inventors: Volodimir SLOBODYANYUK, Roberto RIMINI, Udara FERNANDO, Nitin Jonathan MYERS, Vijay VARADARAJAN
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Publication number: 20210351805Abstract: An apparatus including a housing; sensors configured to sense one or more locations upon which a user is gripping the housing; sensors including antenna modules configured to transmit a signal based on the one or more locations upon which the user is gripping the housing. Another aspect relates to an apparatus including a housing; a set of antenna modules situated proximate at different surface locations along the housing; and a controller configured to operate the set of antenna modules to determine at least one or more electromagnetic leakage coupling between at least one pair of antenna modules of the set. In this aspect, the controller may be configured to select one or more of the set of antenna modules for transmitting a signal based on the one or more electromagnetic leakage coupling associated with one or more of the different locations where a user grips the housing, respectively.Type: ApplicationFiled: July 23, 2021Publication date: November 11, 2021Inventors: Udara FERNANDO, Lin LU
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Patent number: 11169251Abstract: An apparatus is disclosed for proximity detection using multiple power levels. In an example aspect, the apparatus includes a first antenna, a second antenna, and a wireless transceiver coupled to the first antenna and the second antenna. The wireless transceiver is configured to transmit multiple transmit signals at multiple power levels via the first antenna. The wireless transceiver is also configured to receive multiple receive signals via the second antenna. At least one receive signal of the multiple receive signals includes a portion of at least one transmit signal of the multiple transmit signals that is reflected by an object. The wireless transceiver is additionally configured to adjust a transmission parameter based on the at least one receive signal. The transmission parameter varies according to a range to the object.Type: GrantFiled: March 28, 2018Date of Patent: November 9, 2021Assignee: QUALCOMM IncorporatedInventors: Mustafa Emin Sahin, Udara Fernando, Roberto Rimini, Raghu Challa, Seunghwan Kim
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Publication number: 20210306022Abstract: Aspects relate to a calibration of an antenna array module of a wireless communication device in open space. The antenna array module may be used as a proximity sensor to detect an object's proximity relative to the antenna array module. Aspects include displaying an open space calibration instruction on a display of the wireless communication device, transmitting a proximity test signal from the antenna array module, measuring a value of a first signal received at the antenna array module in response to transmitting the proximity test signal, and storing the value of the first signal as an open space calibration value of the antenna array module. The first signal may be measured at cross-polarized antennas of the antenna array module. The value of the first signal may be representative of perturbations of the proximity test signal at the cross-polarized antennas.Type: ApplicationFiled: March 23, 2021Publication date: September 30, 2021Inventors: Udara FERNANDO, Brian Clarke BANISTER, Eyosias Yoseph IMANA
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Publication number: 20210282097Abstract: Methods and apparatus for distinguishing between an antenna of a user equipment (UE) being blocked by a cover or by human tissue. The transmission power of uplink signals may be adjusted accordingly, with higher transmission power for open space (OS) or a cover and lower transmission power for tissue. One example method for wireless communications by a UE generally includes receiving a plurality of cross-polarization captures from multiple antenna arrays of the UE; detecting that the cross-polarization captures correspond to a first OS circle in an in-phase/quadrature (IQ) plane out of a set of possible OS circles for the UE; based on the detection, assigning the first OS circle as an active OS circle for the UE and deactivating other possible OS circles in the set; determining an environmental scenario corresponding to the active OS circle; and transmitting a signal using a transmission power based on the determined scenario.Type: ApplicationFiled: February 3, 2021Publication date: September 9, 2021Inventors: Eyosias Yoseph IMANA, Udara FERNANDO, Michael CORLEY
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Publication number: 20210266052Abstract: An apparatus is disclosed for flexible beamforming using frequency-division multiplexing. In an example aspect, an apparatus includes an antenna array and a wireless transceiver with two or more dedicated receive paths respectively coupled to two or more antenna elements of the antenna array, two or more mixers, a first combiner, a second combiner, and a switching circuit. The first combiner has a first input coupled to a first dedicated receive path and an output coupled to an input of a first mixer. The second combiner has a first input coupled to an output of the first mixer and a second input coupled to an output of a second mixer. The switching circuit is configured to selectively connect a second dedicated receive path to a second input of the first combiner or connect the second dedicated receive path to an input of the second mixer.Type: ApplicationFiled: June 24, 2020Publication date: August 26, 2021Inventors: Udara Fernando, Juergen Cezanne, Joseph Patrick Burke, Dai Lu
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Patent number: 11101834Abstract: An apparatus including a housing; sensors configured to sense one or more locations upon which a user is gripping the housing; sensors including antenna modules configured to transmit a signal based on the one or more locations upon which the user is gripping the housing. Another aspect relates to an apparatus including a housing; a set of antenna modules situated proximate at different surface locations along the housing; and a controller configured to operate the set of antenna modules to determine at least one or more electromagnetic leakage coupling between at least one pair of antenna modules of the set. In this aspect, the controller may be configured to select one or more of the set of antenna modules for transmitting a signal based on the one or more electromagnetic leakage coupling associated with one or more of the different locations where a user grips the housing, respectively.Type: GrantFiled: November 26, 2019Date of Patent: August 24, 2021Assignee: QUALCOMM IncorporatedInventors: Udara Fernando, Lin Lu
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Patent number: 11012946Abstract: Wireless communications systems and methods related to modifying a buffer status report (BSR) are provided. In one embodiment, a first wireless communication device determines a BSR based on at least a first data size and a predicted data size. The first wireless communication device transmits to a second wireless communication device, the BSR. The first wireless communication device receives from the second wireless communication device, a scheduling grant in response to the BSR. The first wireless communication device transmits to the second wireless communication device, a communication signal based on the scheduling grant.Type: GrantFiled: December 20, 2019Date of Patent: May 18, 2021Assignee: QUALCOMM IncorporatedInventors: Shanshan Wang, Aziz Gholmieh, Udara Fernando, Reza Shahidi
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Patent number: 11013019Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform calibration of a transceiver chain to maintain or improve operation of a device or comply with legal or protocol requirements. The UE may receive one or more wireless signals indicating a first set of resources where the first device is scheduled to transmit or receive communications. The UE may calibrate a wireless transceiver chain of the first device in a second set of resources. The second set of resources excludes the first set of resources and includes at least a portion of a third set of resources. The third set of resources are resource in which the first device has an option to transmit or receive communications based on a protocol configuration.Type: GrantFiled: June 27, 2019Date of Patent: May 18, 2021Assignee: QUALCOMM IncorporatedInventors: Rahul Malik, Jong Hyeon Park, Udara Fernando, Alexei Yurievitch Gorokhov, Nan Zhang, Junsheng Han, Scott Hoover, Ruhua He
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Publication number: 20210127337Abstract: In certain aspects, a method implemented in a wireless device includes determining a specific absorption rate (SAR) distribution for a first wireless communication technology, determining a power density (PD) distribution for a second wireless communication technology, and combining the SAR distribution and the PD distribution to generate a combined RF exposure distribution. The method also includes determining at least one first maximum allowable power level and at least one second maximum allowable power level for a future time slot based on the combined RF exposure distribution, setting at least one transmission power limit for a first transmitter in the future time slot based on the at least one first maximum allowable power level, and setting at least one transmission power limit for a second transmitter in the future time slot based on the at least one second maximum allowable power level.Type: ApplicationFiled: January 4, 2021Publication date: April 29, 2021Inventors: Jagadish NADAKUDUTI, Lin LU, Paul GUCKIAN, Mingming CAI, Junsheng HAN, Udara FERNANDO, Raghu CHALLA
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Publication number: 20200396693Abstract: Methods and apparatus for distinguishing between an antenna of a user equipment (UE) being blocked by a cover (e.g., a protective rubber or plastic case) or by human tissue (e.g., a finger or palm). The transmission power of uplink (UL) signals may be adjusted accordingly, with relatively higher transmission power for open space or a cover and relatively lower transmission power for human tissue. One example method for wireless communications by a UE generally includes transmitting a first signal from the UE, receiving a plurality of signals at the UE based on the transmitted first signal, determining values for at least two different types of parameters based on the received plurality of signals, determining an environmental scenario for the UE based on the values for the at least two different types of parameters, and transmitting a second signal using a transmission power based on the determined environmental scenario.Type: ApplicationFiled: June 11, 2020Publication date: December 17, 2020Inventors: Seunghwan KIM, Udara FERNANDO, Eyosias Yoseph IMANA, Robert GILMORE
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Patent number: 10863474Abstract: Methods, systems, and devices for wireless communication are described. A network server may configure a base station for beamforming communications based on a service type of data used by a user equipment (UE). The network server may determine the service type of the data based on position data of the UE, along with other statistical information related to data usage. The position information may include global position system (GPS) information, gyroscope information, accelerometer information, or information related to the UE's subarray geometry. The base station may receive the position information from the UE and convey it to the network server. The network server may use the position information to generate a network map and to identify the service type of communication.Type: GrantFiled: September 1, 2017Date of Patent: December 8, 2020Assignee: Qualcomm IncorporatedInventors: Vasanthan Raghavan, Assaf Touboul, Junyi Li, Udara Fernando
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Patent number: 10772511Abstract: Techniques for performing one or both of gesture recognition and biometric monitoring with an electronic device are disclosed, where the electronic device has a wireless communications capability using beamforming techniques and includes a plurality of millimeter wave antenna modules. Each module includes at least one transmit antenna and at least one receive antenna, operable in one or more frequency ranges not less than 20 GHz, the receive antenna coupled with a first branch configured to receive H-polarized signals and a second branch configured to receive V-polarized signals. Performing one or both of gesture recognition and biometric monitoring includes detecting a presence and motion of a reflective object or anatomical feature by determining a relationship between received H-polarized signals and received V-polarized signals for two or more receive antennas as a function of time.Type: GrantFiled: May 16, 2018Date of Patent: September 15, 2020Assignee: QUALCOMM IncorporatedInventors: Mustafa Emin Sahin, Udara Fernando, Seunghwan Kim
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Patent number: 10727888Abstract: An apparatus is disclosed for proximity detection based on an electromagnetic field perturbation. In an example aspect, the apparatus includes an antenna array including at least two feed ports and a wireless transceiver coupled to the antenna array. The wireless transceiver is configured to generate an electromagnetic field via the antenna array. The wireless transceiver is also configured to receive energy from the electromagnetic field via the at least two feed ports. The wireless transceiver is additionally configured to adjust a transmission parameter based on the energy received via the at least two feed ports. The transmission parameter varies based on a range to an object that is present within the electromagnetic field.Type: GrantFiled: March 28, 2018Date of Patent: July 28, 2020Assignee: QUALCOMM IncorporatedInventors: Udara Fernando, Roberto Rimini, Mustafa Emin Sahin, Seunghwan Kim, Nikhil Anand Muthya
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Publication number: 20200213952Abstract: Wireless communications systems and methods related to modifying a buffer status report (BSR) are provided. In one embodiment, a first wireless communication device determines a BSR based on at least a first data size and a predicted data size. The first wireless communication device transmits to a second wireless communication device, the BSR. The first wireless communication device receives from the second wireless communication device, a scheduling grant in response to the BSR. The first wireless communication device transmits to the second wireless communication device, a communication signal based on the scheduling grant.Type: ApplicationFiled: December 20, 2019Publication date: July 2, 2020Inventors: Shanshan WANG, Aziz GHOLMIEH, Udara FERNANDO, Reza SHAHIDI
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Publication number: 20200177223Abstract: An apparatus including a housing; sensors configured to sense one or more locations upon which a user is gripping the housing; sensors including antenna modules configured to transmit a signal based on the one or more locations upon which the user is gripping the housing. Another aspect relates to an apparatus including a housing; a set of antenna modules situated proximate at different surface locations along the housing; and a controller configured to operate the set of antenna modules to determine at least one or more electromagnetic leakage coupling between at least one pair of antenna modules of the set. In this aspect, the controller may be configured to select one or more of the set of antenna modules for transmitting a signal based on the one or more electromagnetic leakage coupling associated with one or more of the different locations where a user grips the housing, respectively.Type: ApplicationFiled: November 26, 2019Publication date: June 4, 2020Inventors: Udara FERNANDO, Lin LU
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Patent number: 10673479Abstract: An apparatus is disclosed for range-based transmission parameter adjustment. In an example aspect, the apparatus includes a first antenna, a second antenna, and a wireless transceiver. The wireless transceiver is coupled to the first antenna and the second antenna. The wireless transceiver is configured to transmit a proximity detection signal via the first antenna. The wireless transceiver is also configured to receive a reflected proximity detection signal via the second antenna. The reflected proximity detection signal including a portion of the proximity detection signal that is reflected by an object. The wireless transceiver is additionally configured to adjust a transmission parameter based on the reflected proximity detection signal. The transmission parameter varies according to a range to the object. The wireless transceiver is further configured to transmit an uplink signal using the transmission parameter.Type: GrantFiled: March 28, 2018Date of Patent: June 2, 2020Assignee: QUALCOMM IncorporatedInventors: Udara Fernando, Sang-June Park, Shrenik Patel, Roberto Rimini, Steven Charles Ciccarelli