Patents by Inventor Viswanath Panakanti

Viswanath Panakanti 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).

  • System and method of estimating the position of a mobile terminal in a radio telecommunications network
    Patent number: 6873852
    Abstract: A system and method of estimating the position of a mobile terminal (MT) operating in a radio telecommunications network. Expected Received Signal Strength (RSS) values are predicted by a computer-aided prediction tool, and/or are measured by a test MT from base station transceivers. The predicted and measured RSS values are then tagged to indicate whether each value was predicted or measured. The RSS values are then stored at a plurality of locations in a database. When RSS measurements are received from the MT being located, a covariance matrix is used to compute metrics for the locations in the database. If more than a threshold percentage of the locations were populated with measured values, a Maximum-Likelihood (ML) estimator is used to estimate the position of the MT. If fewer than the threshold percentage of locations were populated with measured values, a Minimum-Mean-Square-Error (MMSE) estimator is used to estimate the position.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: March 29, 2005
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Havish Koorapaty, Wade Wang, Viswanath Panakanti, Guwei Zhu
  • System and method of estimating the position of a mobile terminal in a radio telecommunications network
    Publication number: 20030129992
    Abstract: A system and method of estimating the position of a mobile terminal (MT) operating in a radio telecommunications network. Expected Received Signal Strength (RSS) values are predicted by a computer-aided prediction tool, and/or are measured by a test MT from base station transceivers. The predicted and measured RSS values are then tagged to indicate whether each value was predicted or measured. The RSS values are then stored at a plurality of locations in a database. When RSS measurements are received from the MT being located, a covariance matrix is used to compute metrics for the locations in the database. If more than a threshold percentage of the locations were populated with measured values, a Maximum-Likelihood (ML) estimator is used to estimate the position of the MT. If fewer than the threshold percentage of locations were populated with measured values, a Minimum-Mean-Square-Error (MMSE) estimator is used to estimate the position.
    Type: Application
    Filed: January 10, 2002
    Publication date: July 10, 2003
    Applicant: Telefonaktiebolaget LM Ericsson (publ).
    Inventors: Havish Koorapaty, Wade Wang, Viswanath Panakanti, Guwei Zhu