Patents by Inventor Siddhartha R. Chaudhuri

Siddhartha R. Chaudhuri 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).

  • Methods for polling mobile users in a multiple cell wireless network
    Patent number: 5274841
    Abstract: A method for communicating information bidirectionally between a wired network (1) and a wireless network. The wireless network is of the type that includes header stations (12) each having a communication cell (2) associated therewith and one or more mobile communication units (10) disposed within the communication cell. The method includes a first step of, during a first portion of a wireless communication cycle, transmitting information over an uplink wireless communication channel from one or more of the mobile communication units to the header station. A second step of the method, accomplished during a second portion of the wireless communication cycle, transmits information over a downlink wireless communication channel from the header station to one or more of the mobile communication units. The information transmitted downlink includes frames of data received by the header station from the wired network.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: December 28, 1993
    Assignee: International Business Machines Corporation
    Inventors: Kadathur S. Natarajan, Siddhartha R. Chaudhuri, Peter D. Hortensius