Patents by Inventor Sundararaman Kunchithapatham

Sundararaman Kunchithapatham 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).

  • Patent number: 9686744
    Abstract: The disclosure discloses enabling/disabling receive diversity, including determining the UE in a receive diversity enabled state; comparing a first and second receive chain filtered channel chip energy to interference density ratio to an EcI0 threshold, wherein the first and second receive chain filtered channel chip energy to interference density ratios are based on at least two power measurements obtained in the receive diversity enabled state; comparing a first receive chain measured number of Ec/I0 samples below EcI0_LCR_thrshld to a non-receive diversity threshold, wherein the first receive chain measured number of Ec/I0 samples is based on the first receive chain filtered channel chip energy to interference density ratio; and comparing a second receive chain measured number of Ec/I0 samples below EcI0_LCR_thrshld to the non-receive diversity threshold, wherein the second receive chain measured number of Ec/I0 samples is based on the second receive chain filtered channel chip energy to interference densi
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: June 20, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ruhua He, Ting Kong, Stanley Tsai, Sundararaman Kunchithapatham, Vidya Sagar Putta, Kamalakar Ganti, Ammar Kitabi, Praveen Kumar Appani, Ahmed Ali
  • Publication number: 20170064603
    Abstract: A method for providing variable padding for tune away on a mobile communication device includes: performing a first tune away to a first radio access technology (RAT) on a first subscription; determining a status of a second RAT on a second subscription based on activities performed by the second RAT during a time period prior to the first tune away; determining padding for a second tune away to the first RAT based on the determined status of the second RAT; and causing the first RAT on the first subscription to wake up before a next page slot boundary by an amount of time equal to the padding.
    Type: Application
    Filed: August 27, 2015
    Publication date: March 2, 2017
    Inventors: Vidya Sagar Putta, Stanley Tsai, Sundararaman Kunchithapatham, Ahmed Ali, Kamalakar Ganti, Jayesh Bathija, Ammar Kitabi, Praveen Appani
  • Publication number: 20170041878
    Abstract: The disclosure discloses enabling/disabling receive diversity, including determining the UE in a receive diversity enabled state; comparing a first and second receive chain filtered channel chip energy to interference density ratio to an EcI0 threshold, wherein the first and second receive chain filtered channel chip energy to interference density ratios are based on at least two power measurements obtained in the receive diversity enabled state; comparing a first receive chain measured number of Ec/I0 samples below EcI0_LCR_thrshld to a non-receive diversity threshold, wherein the first receive chain measured number of Ec/I0 samples is based on the first receive chain filtered channel chip energy to interference density ratio; and comparing a second receive chain measured number of Ec/I0 samples below EcI0_LCR_thrshld to the non-receive diversity threshold, wherein the second receive chain measured number of Ec/I0 samples is based on the second receive chain filtered channel chip energy to interference densi
    Type: Application
    Filed: February 22, 2016
    Publication date: February 9, 2017
    Inventors: Ruhua He, Ting Kong, Stanley Tsai, Sundararaman Kunchithapatham, Vidya Sagar Putta, Kamalakar Ganti, Ammar Kitabi, Praveen Kumar Appani, Ahmed Ali
  • Patent number: 9077419
    Abstract: Methods and apparatus for selecting one or more suitable antennas for use during power-up/initial acquisition and out of service modes are disclosed. In some examples, initial system acquisition may be performed for a particular receive circuit utilizing a selected one of a first antenna or a second antenna, based on a channel characteristic, such as an automatic gain control (AGC) value corresponding to a received signal energy utilizing either of the antennas. In another example, initial system acquisition utilizing either a receive diversity determination algorithm or an antenna switching determination algorithm may be performed based on a channel characteristic, such as an AGC value corresponding to a received signal energy utilizing one of the antennas coupled to one of the receive circuits.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: July 7, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Troy Russell Curtiss, Vamsee Krishna Somavarapu, Gregory Robert Lie, Jun Hu, Alexey Semjonovs, Sundararaman Kunchithapatham, Stanley Suyi Tsai
  • Publication number: 20140329483
    Abstract: Methods and apparatus for selecting one or more suitable antennas for use during power-up/initial acquisition and out of service modes are disclosed. In some examples, initial system acquisition may be performed for a particular receive circuit utilizing a selected one of a first antenna or a second antenna, based on a channel characteristic, such as an automatic gain control (AGC) value corresponding to a received signal energy utilizing either of the antennas. In another example, initial system acquisition utilizing either a receive diversity determination algorithm or an antenna switching determination algorithm may be performed based on a channel characteristic, such as an AGC value corresponding to a received signal energy utilizing one of the antennas coupled to one of the receive circuits.
    Type: Application
    Filed: October 29, 2013
    Publication date: November 6, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Troy Russell Curtiss, Vamsee Krishna Somavarapu, Gregory Robert Lie, Jun Hu, Alexey Semjonovs, Sundararaman Kunchithapatham, Stanley Suyi Tsai