Patents by Inventor Ravi Gopalan
Ravi Gopalan 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: 10728886Abstract: A communication device and method adapted for network data decoding and connection modes switching in a mobile communication system consisting of connecting to a network in a first mode comprising decoding data received from the network; receiving a message from the network; transmitting a negative acknowledgement (NACK) for the message to the network; identifying a retransmission of the message from the network; and switching to a second mode comprising skipping data decoding based on the identified retransmission of the message from the network.Type: GrantFiled: June 24, 2016Date of Patent: July 28, 2020Assignee: Apple Inc.Inventors: Thomas Klingenbrunn, Ravi Gopalan, Lokesh Naidu Royapati, Hareesh Kodali, Phani Boddapati, Pradeep Hosanagara Nagaraja
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Publication number: 20170374651Abstract: A communication device and method adapted for network data decoding and connection modes switching in a mobile communication system consisting of connecting to a network in a first mode comprising decoding data received from the network; receiving a message from the network; transmitting a negative acknowledgement (NACK) for the message to the network; identifying a retransmission of the message from the network; and switching to a second mode comprising skipping data decoding based on the identified retransmission of the message from the network.Type: ApplicationFiled: June 24, 2016Publication date: December 28, 2017Inventors: Thomas KLINGENBRUNN, Ravi GOPALAN, Lokesh Naidu ROYAPATI, Hareesh KODALI, Phani BODDAPATI, Pradeep HOSANAGARA NAGARAJA
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Patent number: 9614606Abstract: While a user equipment (UE) is in a connected mode, the UE may receive only a limited quantity of data. During this phase, a receive diversity configuration may not be enabled, in an effort to conserve power on the UE side. However, in marginal signal conditions and a poor radio environment, downlink performance at the UE side may be enhanced by enabling receive diversity, irrespective of the limited data received by the UE. However, while receive diversity may improve the signal-to-noise ratio (SNR) at the UE end in marginal signal conditions, the UE may also incur a penalty on power consumption. Therefore, certain aspects of the present disclosure provide techniques for dynamically controlling the receive diversity of a wireless device to improve the downlink procedure performance, while minimizing power consumption due to the usage of a second receive chain when in connected mode.Type: GrantFiled: July 5, 2012Date of Patent: April 4, 2017Assignee: QUALCOMM IncorporatedInventors: Ravi Gopalan, Varsha S. Rao, Sitaramanjaneyulu Kanamarlapudi
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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: 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: 9088919Abstract: The present disclosure presents a method and apparatus for expedited mobile device handover that include performing one or more handover tasks in parallel that have previously been performed exclusively in serial. For example, the disclosure presents a method for wireless device handover, which may include acquiring a target cell, ascertaining a system frame number (SFN) of the target cell, calculating a connection frame number (CFN) for a dedicated channel (DCH) transmission, and reconfiguring a dedicated physical channel (DPCH) based on the calculated CFN. In addition, such an example method may include, while performing at least one of the ascertaining of the SFN, the calculating of the CFN, and the reconfiguring of the DPCH, contemporaneously performing at least one of establishing a downlink dedicated physical channel (DL-DPCH), establishing a synchronization with the target cell, and establishing an uplink dedicated physical channel (UL-DPCH) subsequent to the downlink synchronization.Type: GrantFiled: March 1, 2013Date of Patent: July 21, 2015Assignee: QUALCOMM IncorporatedInventors: Rakesh Surapaneni, Krishna Chaitanya Mukkera, Ansah Ahmed Sheik, Hemanth Kumar Rayapati, Ravi Gopalan, Valibabu Saladi
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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: 8965444Abstract: A particular method includes transmitting a message corresponding to a reporting event detected at a mobile device, where the reporting event is associated with a network condition that decreases a likelihood of the mobile device successfully decoding a reply to the message. The method also includes, in response to transmitting the message, increasing a signal-to-interference ratio (SIR) target of the mobile device.Type: GrantFiled: January 10, 2012Date of Patent: February 24, 2015Assignee: Qualcomm IncorporatedInventors: Harish Venkatachari, An-swol C. Hu, Rajiv R. Nambiar, Venkata Chalapathi Rao S. Emani, Ravi Gopalan, Sunny Arora
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Publication number: 20140307563Abstract: 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: ApplicationFiled: January 27, 2014Publication date: October 16, 2014Applicant: 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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Publication number: 20130324179Abstract: 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: ApplicationFiled: February 8, 2013Publication date: December 5, 2013Applicant: QUALCOMM IncorporatedInventors: Wei ZHANG, Ning HE, Sharif Ahsanul MATIN, Mohammad J. AL-SALEH, Nitin KASTURI, Prashant UDUPA SRIPATHI, Messay AMERGA, Krishna Chitanya MUKKERA, Iyab I. SAKHNINI, Ravi GOPALAN
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Publication number: 20130324180Abstract: 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: ApplicationFiled: February 8, 2013Publication date: December 5, 2013Applicant: 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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Publication number: 20130273915Abstract: The present disclosure presents a method and apparatus for expedited mobile device handover that include performing one or more handover tasks in parallel that have previously been performed exclusively in serial. For example, the disclosure presents a method for wireless device handover, which may include acquiring a target cell, ascertaining a system frame number (SFN) of the target cell, calculating a connection frame number (CFN) for a dedicated channel (DCH) transmission, and reconfiguring a dedicated physical channel (DPCH) based on the calculated CFN. In addition, such an example method may include, while performing at least one of the ascertaining of the SFN, the calculating of the CFN, and the reconfiguring of the DPCH, contemporaneously performing at least one of establishing a downlink dedicated physical channel (DL-DPCH), establishing a synchronization with the target cell, and establishing an uplink dedicated physical channel (UL-DPCH) subsequent to the downlink synchronization.Type: ApplicationFiled: March 1, 2013Publication date: October 17, 2013Applicant: QUALCOMM IncorporatedInventors: Rakesh SURAPANENI, Krishna Chaitanya Mukkera, Ansah Ahmed Sheik, Hemanth Kumar Rayapati, Ravi Gopalan, Valibabu Saladi
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Publication number: 20130170416Abstract: While a user equipment (UE) is in a connected mode, the UE may receive only a limited quantity of data. During this phase, a receive diversity configuration may not be enabled, in an effort to conserve power on the UE side. However, in marginal signal conditions and a poor radio environment, downlink performance at the UE side may be enhanced by enabling receive diversity, irrespective of the limited data received by the UE. However, while receive diversity may improve the signal-to-noise ratio (SNR) at the UE end in marginal signal conditions, the UE may also incur a penalty on power consumption. Therefore, certain aspects of the present disclosure provide techniques for dynamically controlling the receive diversity of a wireless device to improve the downlink procedure performance, while minimizing power consumption due to the usage of a second receive chain when in connected mode.Type: ApplicationFiled: July 5, 2012Publication date: July 4, 2013Applicant: QUALCOMM INCORPORATEDInventors: Ravi Gopalan, Varsha S. Rao, Sitaramanjaneyulu Kanamarlapudi
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Publication number: 20130012254Abstract: A particular method includes transmitting a message corresponding to a reporting event detected at a mobile device, where the reporting event is associated with a network condition that decreases a likelihood of the mobile device successfully decoding a reply to the message. The method also includes, in response to transmitting the message, increasing a signal-to-interference ratio (SIR) target of the mobile device.Type: ApplicationFiled: January 10, 2012Publication date: January 10, 2013Inventors: Harish Venkatachari, An-swol C. Hu, Rajiv R. Nambiar, Venkata Chalapathi Rao S. Emani, Ravi Gopalan, Sunny Arora
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Publication number: 20120120860Abstract: In a cellular communication system, apparatus and methods relating to a power-optimized demodulator front end (demfront) receiver subsystem of a user equipment (UE) can reduce power utilization by optimizing the operation of the demfront receiver subsystem. For example, in an aspect, the apparatus and methods include enabling a first receiver of a device for receiving a control channel on a downlink from a node, determining that the control channel schedules the device to receive data on the downlink, enabling a second receiver of the device that consumes more power than the first receiver to receive the data on the downlink, and re-enabling the first receiver for receiving the control channel on the downlink subsequent to receiving the data.Type: ApplicationFiled: October 27, 2011Publication date: May 17, 2012Inventors: Jimmy C. Chui, Ravi Gopalan, Feng Lu, Guang Xie