Patents by Inventor Raghavendra Rangaiah

Raghavendra Rangaiah 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: 9100893
    Abstract: A method for cell selection in a radio access network covering a geographical area divided into a plurality of cells, the method comprising: searching for a cell on a frequency; checking to see if the cell is a barred cell; and conditional on identifying the cell as a barred cell performing a search for a cell on another frequency.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: August 4, 2015
    Assignee: BlackBerry Limited
    Inventor: Raghavendra Rangaiah
  • Publication number: 20120264435
    Abstract: A method for cell reselection from a serving cell to another cell in a radio access network covering a geographical area divided into a plurality of cells, the method comprising: attempting to reselect to a first other cell with a higher rank value than the serving cell; setting up a channel on the first other cell and initiating a completion period; conditional on the completion period expiring before the first other cell is identified as being a suitable cell, receiving cell measurements for cells and creating a cell ranking list of the cells based on rank values of the cells; conditional on a second other cell having a higher rank value than the serving cell or first other cell, attempting to reselect to the second other cell.
    Type: Application
    Filed: June 25, 2012
    Publication date: October 18, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Raghavendra Rangaiah, Andrew Farnsworth, Gldeon Roberts
  • Publication number: 20120218958
    Abstract: A method for cell selection in a radio access network covering a geographical area divided into a plurality of cells, the method comprising: searching for a cell on a frequency; checking to see if the cell is a barred cell; and conditional on identifying the cell as a barred cell performing a search for a cell on another frequency.
    Type: Application
    Filed: May 8, 2012
    Publication date: August 30, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventor: Raghavendra Rangaiah
  • Patent number: 8208443
    Abstract: A method for cell reselection from a serving cell to another cell in a radio access network covering a geographical area divided into a plurality of cells, the method comprising: attempting to reselect to a first other cell with a higher rank value than the serving cell; setting up a channel on the first other cell and initiating a completion period; conditional on the completion period expiring before the first other cell is identified as being a suitable cell, receiving cell measurements for cells and creating a cell ranking list of the cells based on rank values of the cells; conditional on a second other cell having a higher rank value than the serving cell or first other cell, attempting to reselect to the second other cell.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: June 26, 2012
    Assignee: Research In Motion Limited
    Inventors: Raghavendra Rangaiah, Andrew Farnsworth, Gideon Roberts
  • Patent number: 8189524
    Abstract: A method for cell selection in a radio access network covering a geographical area divided into a plurality of cells, the method comprising: searching for a cell on a frequency; checking to see if the cell is a barred cell; and conditional on identifying the cell as a barred cell performing a search for a cell on another frequency.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: May 29, 2012
    Assignee: Research In Motion Limited
    Inventor: Raghavendra Rangaiah
  • Publication number: 20090285170
    Abstract: A method for cell selection in a radio access network covering a geographical area divided into a plurality of cells, the method comprising: searching for a cell on a frequency; checking to see if the cell is a barred cell; and conditional on identifying the cell as a barred cell performing a search for a cell on another frequency.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 19, 2009
    Applicant: RESEARCH IN MOTION LIMITED
    Inventor: Raghavendra RANGAIAH
  • Publication number: 20090286539
    Abstract: A method for cell reselection from a serving cell to another cell in a radio access network covering a geographical area divided into a plurality of cells, the method comprising: attempting to reselect to a first other cell with a higher rank value than the serving cell; setting up a channel on the first other cell and initiating a completion period; conditional on the completion period expiring before the first other cell is identified as being a suitable cell, receiving cell measurements for cells and creating a cell ranking list of the cells based on rank values of the cells; conditional on a second other cell having a higher rank value than the serving cell or first other cell, attempting to reselect to the second other cell.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 19, 2009
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Raghavendra RANGAIAH, Andrew FARNSWORTH, Gideon ROBERTS