Patents by Inventor Prashant Udupa Sripathi
Prashant Udupa Sripathi 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: 10715233Abstract: Methods and apparatuses relate to sounding reference signal (SRS) transmit antenna selection in wireless communication systems. For example, a user equipment (UE) may select, from a set of antennas, a subset of antennas for SRS transmission based on at least one antenna selection parameter. The UE may further transmit, on an uplink communication channel, the SRS using the subset of antennas to a network entity. In some aspects, the at least one antenna selection parameter may include a reference signal receive power (RSRP) value, a signal-to-noise ratio (SNR) value, a spectrum efficiency value, and/or an SNR value and a channel correlation value.Type: GrantFiled: August 23, 2018Date of Patent: July 14, 2020Assignee: QUALCOMM IncorporatedInventors: Hongbo Yan, Supratik Bhattacharjee, Gregory Foerster, Prashant Udupa Sripathi
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Patent number: 10419998Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may identify a trigger condition relating to one or more of cell information regarding a cell to which the apparatus is connected, channel allocation information regarding the device, or a device display status of the apparatus. The apparatus may selectively activate or deactivate an advanced receiver of the apparatus based at least in part on the trigger condition.Type: GrantFiled: November 14, 2016Date of Patent: September 17, 2019Assignee: Qualcomm IncorporatedInventors: Yue Yang, Srinivasan Balasubramanian, Aziz Gholmieh, Prashant Udupa Sripathi, Shailesh Maheshwari, Vishal Dalmiya
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Patent number: 10268256Abstract: A method, a user equipment, an apparatus, and a computer program product for wireless communication are provided. The user equipment may identify a power consumption condition that relates to a downlink channel associated with the user equipment. The power consumption condition may correspond to a time period that is shorter than or equal to a transmission time interval of the user equipment. The user equipment may configure one or more modems of the user equipment to reduce power consumption during the time period.Type: GrantFiled: August 22, 2017Date of Patent: April 23, 2019Assignee: QUALCOMM IncorporatedInventors: Prashant Udupa Sripathi, Chinmay Vaze, Hongbo Yan, Raghu Challa
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Patent number: 10263669Abstract: In order to balance the power requirements of a MIMO receiver with the gains that may be achieved through its use, an apparatus determines whether a current configuration of the UE supports iterative MIMO reception. When it is determined that the current configuration of the UE supports iterative MIMO reception, the apparatus determines whether at least one parameter of the received signal is within a corresponding target condition, respectively, for each of the at least one parameters, e.g., including determining whether a scheduling percentage meets a scheduling threshold and whether an error rate is within an error rate range. When both the configuration supports iterative MIMO reception and the signal parameter(s) meet the corresponding target condition(s), the apparatus uses the iterative MIMO receiver. If not, the apparatus uses a serial receiver.Type: GrantFiled: August 23, 2017Date of Patent: April 16, 2019Assignee: QUALCOMM IncorporatedInventors: Chinmay Vaze, Prashant Udupa Sripathi, Supratik Bhattacharjee, Michael McCloud
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Publication number: 20190068260Abstract: Methods and apparatuses relate to sounding reference signal (SRS) transmit antenna selection in wireless communication systems. For example, a user equipment (UE) may select, from a set of antennas, a subset of antennas for SRS transmission based on at least one antenna selection parameter. The UE may further transmit, on an uplink communication channel, the SRS using the subset of antennas to a network entity. In some aspects, the at least one antenna selection parameter may include a reference signal receive power (RSRP) value, a signal-to-noise ratio (SNR) value, a spectrum efficiency value, and/or an SNR value and a channel correlation value.Type: ApplicationFiled: August 23, 2018Publication date: February 28, 2019Inventors: Hongbo YAN, Supratik BHATTACHARJEE, Gregory FOERSTER, Prashant Udupa SRIPATHI
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Publication number: 20180139672Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may identify a trigger condition relating to one or more of cell information regarding a cell to which the apparatus is connected, channel allocation information regarding the device, or a device display status of the apparatus. The apparatus may selectively activate or deactivate an advanced receiver of the apparatus based at least in part on the trigger condition.Type: ApplicationFiled: November 14, 2016Publication date: May 17, 2018Inventors: Yue YANG, Srinivasan BALASUBRAMANIAN, Aziz GHOLMIEH, Prashant Udupa SRIPATHI, Shailesh MAHESHWARI, Vishal DALMIYA
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Publication number: 20180059769Abstract: A method, a user equipment, an apparatus, and a computer program product for wireless communication are provided. The user equipment may identify a power consumption condition that relates to a downlink channel associated with the user equipment. The power consumption condition may correspond to a time period that is shorter than or equal to a transmission time interval of the user equipment. The user equipment may configure one or more modems of the user equipment to reduce power consumption during the time period.Type: ApplicationFiled: August 22, 2017Publication date: March 1, 2018Inventors: Prashant Udupa SRIPATHI, Chinmay Vaze, Hongbo Yan, Raghu Challa
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Publication number: 20180062709Abstract: In order to balance the power requirements of a MIMO receiver with the gains that may be achieved through its use, an apparatus determines whether a current configuration of the UE supports iterative MIMO reception. When it is determined that the current configuration of the UE supports iterative MIMO reception, the apparatus determines whether at least one parameter of the received signal is within a corresponding target condition, respectively, for each of the at least one parameters, e.g., including determining whether a scheduling percentage meets a scheduling threshold and whether an error rate is within an error rate range. When both the configuration supports iterative MIMO reception and the signal parameter(s) meet the corresponding target condition(s), the apparatus uses the iterative MIMO receiver. If not, the apparatus uses a serial receiver.Type: ApplicationFiled: August 23, 2017Publication date: March 1, 2018Inventors: Chinmay VAZE, Prashant Udupa SRIPATHI, Supratik BHATTACHARJEE, Michael MCCLOUD
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Patent number: 9531483Abstract: UEs are adapted to facilitate calculation of signal-to-interference ratio (SIR) estimates in closed-loop transmission diversity (CLTD) communications before downlink and uplink synchronization is achieved. A UE may receive a transmission sent using transmission diversity. According to one example, the UE may calculate a plurality of signal-to-interference ratio (SIR) estimates for the received transmission, where each signal-to-interference ratio estimate is calculated using a different weight factor. The UE may further select one of the calculated signal-to-interference ratio (SIR) estimates to be employed for the received transmission. According to another example, the UE may calculate a signal-to-interference ratio (SIR) estimate for the received transmission without employing any weight factor. Other aspects, embodiments, and features are also included.Type: GrantFiled: December 9, 2013Date of Patent: December 27, 2016Assignee: QUALCOMM IncorporatedInventors: Wei Zhang, Guang Xie, Nate Chizgi, Prashant Udupa Sripathi, Todd Nicholas Tsakiris
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Patent number: 9408094Abstract: Disclosed are an apparatus and method for assessing decode reliability of voice, data and control channel transmissions. In an aspect, the apparatus and method are configured to receive one or more radio frames or parts of a frame on a downlink channel; demodulate the received one or more frames or parts of the frame; decode the demodulated one or more frames or parts of the frame; compute one or more demodulator-based metrics and one or more decoder-based metrics; combine the one or more demodulator-based metrics and the one or more decoder-based metrics using a reliability function that assesses reliability of the decoded one or more frames or parts of the frame; and accept or reject the decoded one or more frames or parts of the frame based on the assessment of the reliability of the decoded frames or parts of the frame.Type: GrantFiled: March 13, 2013Date of Patent: August 2, 2016Assignee: QUALCOMM IncorporatedInventors: Prashant Udupa Sripathi, Nate Chizgi, Christopher Cooper Riddle, Nitin Kasturi, Atul Arvind Salvekar
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Patent number: 9344901Abstract: Methods and apparatus for processing data received at a user equipment comprises determining a protocol data unit (PDU)-specific Layer 1 decoding metric of a Layer 1 decoded PDU. The methods and apparatus further comprises determining whether to perform a Layer 2 decoding of the Layer 1 decoded PDU based on the PDU-specific Layer 1 decoding metric.Type: GrantFiled: January 27, 2014Date of Patent: May 17, 2016Assignee: QUALCOMM IncorporatedInventors: Sitaramanjaneyulu Kanamarlapudi, Prashant Udupa Sripathi, Jeremy M. Stein, Nitin Kasturi, Je Woo Kim, Messay Amerga, Sagar B. Shah, Venkata Srihari Inampudi, Ravi Gopalan
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Patent number: 9185650Abstract: Disclosed are systems and methods for controlling by the User Equipment (UE) downlink power in early decode termination mode. In one aspect, the UE may be configured to perform early decoding of a downlink (DL) transmission from a base station. The UE further configured to estimate a signal-to-interference ratio (SIRE) of the DL transmission. Based on the SIRE, the UE is configured to select a Transmission Power Control (TPC) command sequence for a low power mode of operation of the UE in which a receiver is powered down. The UE is further configured to activate the low power mode and transmit the selected TPC command sequence to the base station to adjust a DL transmission power during the low power mode.Type: GrantFiled: September 16, 2013Date of Patent: November 10, 2015Assignee: QUALCOMM IncorporatedInventors: Harish Venkatachari, Nate Chizgi, Prashant Udupa Sripathi, Atul Arvind Salvekar, Sharif Ahsanul Matin
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Patent number: 9167537Abstract: Disclosed are methods and apparatus for rejecting unreliable downlink (DL) transmit power control (TPC) commands in windup mode. In one aspect, the method includes receiving by a user equipment (UE) a plurality of DLTPC commands from a base station, analyzing on one or more transmitted uplink (UL) TPC commands, detecting a windup mode based on the one or more DLTPC and ULTPC commands, and rejecting one or more DLTPC down commands in the windup mode.Type: GrantFiled: February 8, 2013Date of Patent: October 20, 2015Assignee: QUALCOMM IncorporatedInventors: Wei Zhang, Ravi Gopalan, Sharif Ahsanul Matin, Ning He, Prashant Udupa Sripathi, Nitin Kasturi, Messay Amerga, Mohammad J. Al-Saleh, Krishna Chaitanya Mukkera, Vijay Marwah
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Patent number: 9143964Abstract: UEs are adapted to facilitate detection and handling of deconstructive impacts of default weight factors employed before downlink and uplink synchronization is achieved in closed-loop transmission diversity communications. According to one example, a UE may receive transmissions sent using a default weight factor for transmission diversity. The UE may determine whether the default weight factor is causing a deconstructive impact on signal-to-interference ratio estimates for the received transmissions. When it is determined that the default weight factor is causing the deconstructive impact on the signal-to-interference ratio estimates for the received transmissions, the UE may employ an alternate closed-loop transmission diversity (CLTD) mode. Other aspects, embodiments, and features are also included.Type: GrantFiled: December 13, 2013Date of Patent: September 22, 2015Assignee: QUALCOMM IncorporatedInventors: Wei Zhang, Prashant Udupa Sripathi, Nate Chizgi, Padmanabhan Ramakrishnan, Ke Ning, Guang Xie
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Patent number: 9112672Abstract: Disclosed are systems, methods, and computer program products for decoding of transport format combination indicator (TFCI) in a universal mobile telecommunications system (UMTS). In one aspect, a method includes receiving by a UE coded TFCI bit sequence on a physical channel, determining a range of TFCI bits that contain information, performing early decoding of the received TFCI bit sequence; and limiting the search set of decoded TFCI bits to the determined range of TFCI bits. The range of TFCI bits that contain information may be determined from a code book.Type: GrantFiled: October 25, 2013Date of Patent: August 18, 2015Assignee: QUALCOMM IncorporatedInventors: Nate Chizgi, Prashant Udupa Sripathi, Valibabu Saladi, Sharif A. Matin, Yi Zhang
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Patent number: 9112634Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which PAPR for an input of an AGC in a wireless receiver is generated. The AGC may provide a gain-controlled signal to a correlator when the PAPR of the input does not exceed the threshold ratio and may clamp the gain of the gain-controlled signal when PAPR of the input is large. A large PAPR may cause termination of search for a signal of interest in a current channel. The search may be resumed in a non-adjacent channel.Type: GrantFiled: November 6, 2012Date of Patent: August 18, 2015Assignee: QUALCOMM IncorporatedInventors: Prashant Udupa Sripathi, Parvathanathan Subrahmanya
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Patent number: 9055537Abstract: Disclosed are methods and apparatus for rejecting unreliable downlink (DL) transmit power control (TPC) commands based on signal-to-interference-ratio estimates (SIRE). The method includes receiving by a user equipment (UE) a DL transmit power control (TPC) command from a base station; calculating a signal-to-interference ratio estimate (SIRE) for the DL channel; determining a scaling factor for a DLTPC rejection threshold based on the DL channel SIRE; adjusting the DLTPC rejection threshold based on the determined scaling factor; and rejecting or accepting the DLTPC command based on the adjusted DLTPC rejection threshold.Type: GrantFiled: February 8, 2013Date of Patent: June 9, 2015Assignee: QUALCOMM IncorporatedInventors: Wei Zhang, Ning He, Sharif Ahsanul Matin, Mohammad J Al-Saleh, Nitin Kasturi, Prashant Udupa Sripathi, Messay Amerga, Krishna Chaitanya Mukkera, Iyab I Sakhnini, Ravi Gopalan
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Patent number: 9036526Abstract: The present disclosure presents a method and apparatus for reducing power consumption during a voice communication in a user equipment (UE). For example, the method may include receiving a plurality of frames associated with the voice communication. Further, such an example method may include determining whether a frame pattern based at least on the received plurality of frames corresponds to a transition from a speech burst period to a non-speech period, and disabling a portion of a receiver subsystem at the UE for at least a portion of a frame associated with the non-speech period. As such, the power consumption in a UE may be reduced.Type: GrantFiled: April 3, 2013Date of Patent: May 19, 2015Assignee: QUALCOMM IncorporatedInventors: Nate Chizgi, Atul Arvind Salvekar, Prashant Udupa Sripathi, Madhup Chandra, Sharif Ahsanul Matin
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Patent number: 8923171Abstract: Disclosed are methods and apparatus for reducing UE's power consumption by controlling early decoding boundary. In one aspect, a UE is configured to receive a data or voice frame from a base station. The UE selects one or more quality metrics for determining decoding boundary of the received frame and computes the selected one or more quality metrics. The UE then determines a decoding boundary for the frame based on one or more computed quality metrics. The UE then decodes the received frames at the determined decoding boundary and determines whether the decoding of the frame was successful. If the early decoding of the frame was successful, the UE may terminate reception of the frame. If the early decoding of the frame was unsuccessful, the UE may adjust the decoding boundary and decodes the frame at the adjusted boundary.Type: GrantFiled: January 29, 2013Date of Patent: December 30, 2014Assignee: QUALCOMM IncorporatedInventors: Atul Arvind Salvekar, Sharad Deepak Sambhwani, Prashant Udupa Sripathi, Nate Chizgi, Christopher Cooper Riddle, An-Swol Clement Hu, Harish Venkatachari
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Publication number: 20140378070Abstract: UEs are adapted to facilitate detection and handling of deconstructive impacts of default weight factors employed before downlink and uplink synchronization is achieved in closed-loop transmission diversity communications. According to one example, a UE may receive transmissions sent using a default weight factor for transmission diversity. The UE may determine whether the default weight factor is causing a deconstructive impact on signal-to-interference ratio estimates for the received transmissions. When it is determined that the default weight factor is causing the deconstructive impact on the signal-to-interference ratio estimates for the received transmissions, the UE may employ an alternate closed-loop transmission diversity (CLTD) mode. Other aspects, embodiments, and features are also included.Type: ApplicationFiled: December 13, 2013Publication date: December 25, 2014Applicant: QUALCOMM IncorporatedInventors: Wei Zhang, Prashant Udupa Sripathi, Nate Chizgi, Padmanabhan Ramakrishnan, Ke Ning, Guang Xie