Patents by Inventor Parthasarathy Subramanian

Parthasarathy Subramanian 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: 7706763
    Abstract: When operating a mobile station in an Enhanced General Packet Radio Service (EGPRS)-compliant mode of operation, a first performance of the mobile station (110) in the EGPRS-compliant mode of operation is evaluated based upon received operating parameters. A second performance of the mobile station (110) in a General Packet Radio Service (GPRS)-compliant mode of operation is also determined based upon the received operating parameters. The EGPRS-compliant mode of the mobile station (110) is switched to the GPRS-compliant mode of operation whenever the second performance is evaluated to be preferable to the first performance.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: April 27, 2010
    Assignee: Motorola, Inc.
    Inventor: Parthasarathy Subramanian
  • Publication number: 20070197255
    Abstract: When operating a mobile station in an Enhanced General Packet Radio Service (EGPRS)-compliant mode of operation, a first performance of the mobile station (110) in the EGPRS-compliant mode of operation is evaluated based upon received operating parameters. A second performance of the mobile station (110) in a General Packet Radio Service (GPRS)-compliant mode of operation is also determined based upon the received operating parameters. The EGPRS-compliant mode of the mobile station (110) is switched to the GPRS-compliant mode of operation whenever the second performance is evaluated to be preferable to the first performance.
    Type: Application
    Filed: February 21, 2006
    Publication date: August 23, 2007
    Inventor: Parthasarathy Subramanian
  • Publication number: 20050190745
    Abstract: A method (800) and apparatus (252, 205) are for adapting coding schemes used on a downlink channel of a wireless packet data communication system (100) to data resource limits of a mobile station (180, 270) coupled to a peripheral device (185, 280). The method includes transmitting (815) a set of data on the downlink channel to the mobile station using a current combination of coding schemes that have a current data rate, monitoring (820) whether a data transfer rate of the peripheral device has been exceeded, and establishing (840) an optimal combination of coding schemes to be the current combination of coding schemes when a search criterion that is based on whether the data transfer rate of the peripheral device has been exceeded is met (826). The monitoring includes determining whether intervals of acknowledgements transmitted from the mobile station on the uplink channel in response to the set of data meet (910) uniformity criteria.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 1, 2005
    Inventors: Gary Western, Sriram Chaturvedi, Parthasarathy Subramanian
  • Patent number: 6769086
    Abstract: A method for transitioning from a lower channel coding scheme to a higher channel coding scheme in a communication network providing transmission of data encoded using one of a plurality of channel coding schemes, the transmission occurring between the communication network and a number of mobile stations via a corresponding number of radio links, the communication network having at least one base transceiver station operatively coupled to a packet control unit. The method includes applying the higher channel coding scheme to a portion of data transmitted between the communication network and the mobile station, and, after a predetermined time period, noting a data block error rate of the portion of data. The method further includes directing application of the higher channel coding scheme to all future data transmitted if the data block error rate indicates an equivalent or higher data throughput of the portion of data.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: July 27, 2004
    Assignee: Motorola, Inc.
    Inventors: Gary E. Western, Sriram S. Chaturvedi, Parthasarathy Subramanian
  • Publication number: 20040013095
    Abstract: A method for transitioning from a lower channel coding scheme to a higher channel coding scheme in a communication network providing transmission of data encoded using one of a plurality of channel coding schemes, the transmission occurring between the communication network and a number of mobile stations via a corresponding number of radio links, the communication network having at least one base transceiver station operatively coupled to a packet control unit. The method includes applying the higher channel coding scheme to a portion of data transmitted between the communication network and the mobile station, and, after a predetermined time period, noting a data block error rate of the portion of data. The method further includes directing application of the higher channel coding scheme to all future data transmitted if the data block error rate indicates an equivalent or higher data throughput of the portion of data.
    Type: Application
    Filed: July 22, 2002
    Publication date: January 22, 2004
    Inventors: Gary E. Western, Sriram S. Chaturvedi, Parthasarathy Subramanian