Patents by Inventor Vinay R. Majjigi

Vinay R. Majjigi 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).

  • Publication number: 20140243041
    Abstract: A method for facilitating in-device coexistence between wireless communication technologies on a wireless communication device is provided. The method can include transmitting data traffic from the wireless communication device via an aggressor wireless communication technology; determining occurrence of an in-device interference condition resulting from transmission of the data traffic via the aggressor wireless communication technology interfering with concurrent data reception by the wireless communication device via a victim wireless communication technology; and reducing a bit rate of the data traffic transmitted via the aggressor wireless communication technology in response to the in-device interference condition.
    Type: Application
    Filed: June 4, 2013
    Publication date: August 28, 2014
    Inventors: Wen Zhao, Paul V. Flynn, William S. Burchill, Vinay R. Majjigi, Xiaowen Wang, Syed A. Mujtaba, Kee-Bong Song
  • Publication number: 20140220916
    Abstract: A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes.
    Type: Application
    Filed: April 9, 2014
    Publication date: August 7, 2014
    Applicant: Apple Inc.
    Inventors: Syed A. MUJTABA, Xiaowen WANG, Young Jae KIM, Vinay R. MAJJIGI, Johnson O. SEBENI, Tahir SHAMIM, Karthik ANANTHARAMAN, Kee-Bong SONG, Romain TRILLING
  • Patent number: 8792888
    Abstract: A single chip mobile wireless device capable of receiving and transmitting over one wireless network at a time maintains registration on two wireless communication networks that each use different communication protocols in parallel. Periodically, the mobile wireless device tunes one or more receivers from a first wireless network to a second wireless network in order to listen for paging messages addressed to the mobile wireless device from the second wireless network. The first wireless network suspends allocation of radio resources to the mobile wireless device based on receipt of a suspension message from the mobile wireless device, or based on knowledge of a paging cycle for mobile wireless device in the second wireless network, or based on detection of an out of synchronization condition with the mobile wireless device.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: July 29, 2014
    Assignee: Apple Inc.
    Inventors: Wen Zhao, Syed A. Mujtaba, Xiaowen Wang, Vinay R. Majjigi, Isabel G. Mahe
  • Patent number: 8781519
    Abstract: A method of modulating transmission power to facilitate in-device coexistence between wireless communication technologies is provided. The method can include determining a scheduled time period during which data is received by a device via a first wireless communication technology. The method can further include reducing a transmission power of a transmission from the device via a second wireless communication technology to a threshold level prior to the scheduled time period and controlling the transmission power so that the transmission power does not exceed the threshold level during the scheduled time period. The method can additionally include, subsequent to the time period, increasing the transmission power to a level exceeding the threshold level.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: July 15, 2014
    Assignee: Apple Inc.
    Inventors: William S. Burchill, Vinay R. Majjigi, Xiaowen Wang
  • Publication number: 20140192669
    Abstract: A station (STA) can receive messages (e.g., beacon frames) at a regular interval, and perform measurements on the received messages. The STA maintains a running average of recent measurement values, and updates the running average after each new measurement interval. At some measurement opportunities, the expected messages cannot be received by the STA, and so the STA cannot perform a measurement; when this occurs, the STA can choose substitute values to use for the missed measurements when next calculating the running average. As one example, the STA can substitute the value for a previously-performed measurement for the missed measurements. As another example, the STA can substitute a predetermined low value for the missed measurements. Based on the value of the running average at a given point in time, the STA can take actions such as initiating a roaming scan or switching to a different wireless interface.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 10, 2014
    Applicant: Apple Inc.
    Inventors: Xiaowen Wang, Vinay R. Majjigi, Syed A. Mujtaba, Christopher J. Hansen
  • Patent number: 8737280
    Abstract: A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: May 27, 2014
    Assignee: Apple Inc.
    Inventors: Syed A. Mujtaba, Kee-Bong Song, Xiaowen Wang, Young Jae Kim, Vinay R. Majjigi, Johnson O. Sebeni, Romain Trilling, Tahir Shamim, Karthik Anantharaman
  • Publication number: 20140126397
    Abstract: In order to facilitate communication between an electronic device and another electronic device, the electronic device determines communication-quality metrics for a first connection in a wireless network based on received information from the other electronic device. Then, the electronic device calculates an overall communication-quality indicator for the first connection based on at least some of the communication-quality metrics. Moreover, the electronic device dynamically adapts the communication with the other electronic device based on the overall communication-quality indicator. For example, the electronic device may establish a second connection in a cellular-telephone network and may use the second connection to communicate with the other electronic device.
    Type: Application
    Filed: April 2, 2013
    Publication date: May 8, 2014
    Applicant: Apple, Inc.
    Inventors: Christopher J. Hansen, Kee-Bong Song, Syed A. Mujtaba, Vinay R. Majjigi, Xiaowen Wang
  • Publication number: 20140087664
    Abstract: A method of increasing power amplifier linearity to facilitate in-device coexistence between wireless communication technologies is provided. The method can include determining a scheduled time period during which data is received by a device via a first wireless communication technology. The method can further include adjusting an operational parameter of a power amplifier applied to a transmission from the device via a second wireless communication technology to increase a linearity of the power amplifier during the scheduled time period.
    Type: Application
    Filed: September 26, 2012
    Publication date: March 27, 2014
    Applicant: APPLE INC.
    Inventors: Vinay R. MAJJIGI, William S. BURCHILL, Xiaowen WANG
  • Publication number: 20140087663
    Abstract: A method of modulating transmission power to facilitate in-device coexistence between wireless communication technologies is provided. The method can include determining a scheduled time period during which data is received by a device via a first wireless communication technology. The method can further include reducing a transmission power of a transmission from the device via a second wireless communication technology to a threshold level prior to the scheduled time period and controlling the transmission power so that the transmission power does not exceed the threshold level during the scheduled time period. The method can additionally include, subsequent to the time period, increasing the transmission power to a level exceeding the threshold level.
    Type: Application
    Filed: September 26, 2012
    Publication date: March 27, 2014
    Applicant: APPLE INC.
    Inventors: William S. BURCHILL, Vinay R. MAJJIGI, Xiaowen WANG
  • Publication number: 20130331137
    Abstract: Methods and apparatus to mitigate interference among multiple wireless subsystems of a wireless communication device are described. A host processor obtains configurations for a plurality of wireless subsystems and evaluates whether potential or actual coexistence interference exists between two or more of the wireless subsystems. The host processor provides configuration information and link quality reporting parameters to and obtains link quality reports from at least two wireless subsystems. When link quality for at least one wireless subsystem fails a set of link quality conditions, the host processor adjusts data requirements for applications that communicate through one or more of the wireless subsystems and/or adjusts radio frequency operating conditions for one or more of the wireless subsystems to mitigate interference among the wireless subsystems.
    Type: Application
    Filed: August 16, 2013
    Publication date: December 12, 2013
    Applicant: Apple Inc.
    Inventors: William S. Burchill, Paul V. Flynn, Vinay R. Majjigi, Xiaowen Wang, Kee-Bong Song, Syed A. Mujtaba, Wen Zhao
  • Publication number: 20130064151
    Abstract: A mobile wireless device adapts receive diversity during discontinuous reception based on downlink signal quality, page indicators and page messages. When the downlink signal quality exceeds a pre-determined threshold, the mobile wireless device decodes a page indicator channel through an initial antenna, and otherwise, decodes a paging channel through the initial antenna without decoding the page indicator channel. The mobile wireless device switches to decoding the paging channel through an alternate antenna when a page indicator decodes as an erasure. When a paging message received through a single antenna decodes with an incorrect error checking code, the mobile wireless devices enables receive diversity through multiple antennas for subsequent decoding. The mobile wireless device switches between single antenna reception and multiple antenna reception based on tracking multiple consecutive error checking code failures and successes.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 14, 2013
    Applicant: Apple Inc.
    Inventors: Syed A. Mujtaba, Kee-Bong Song, Xiaowen Wang, Young Jae Kim, Vinay R. Majjigi, Johnson O. Sebeni, Romain Trilling, Tahir Shamim, Karthik Anantharaman
  • Publication number: 20120270545
    Abstract: A single chip mobile wireless device capable of receiving and transmitting over one wireless network at a time maintains registration on two wireless communication networks that each use different communication protocols in parallel. Periodically, the mobile wireless device tunes one or more receivers from a first wireless network to a second wireless network in order to listen for paging messages addressed to the mobile wireless device from the second wireless network. The first wireless network suspends allocation of radio resources to the mobile wireless device based on receipt of a suspension message from the mobile wireless device, or based on knowledge of a paging cycle for mobile wireless device in the second wireless network, or based on detection of an out of synchronization condition with the mobile wireless device.
    Type: Application
    Filed: March 9, 2012
    Publication date: October 25, 2012
    Applicant: Apple Inc.
    Inventors: Wen ZHAO, Syed A. Mujtaba, Xiaowen Wang, Vinay R. Majjigi, Isabel G. Mahe