Patents by Inventor Prabhakar R. Chitrapu

Prabhakar R. Chitrapu 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).

  • Publication number: 20030185187
    Abstract: The present invention provides for a Time Division Duplex - Radio Local Area Network (TDD-RLAN) which includes a Radio Access Network Internet Protocol (RAN IP) gateway that enables connectivity to the public Internet. The system may serve as a stand-alone system or be incorporated into a UMTS used with conventional Core Network, particularly for tracking and implementing AAA functions in the Core Network.
    Type: Application
    Filed: December 23, 2002
    Publication date: October 2, 2003
    Applicant: InterDigital Technology Corporation
    Inventors: Prabhakar R. Chitrapu, Narayan Parappil Menon, Yi-Ju Chao, Shamim Akbar Rahman
  • Publication number: 20030157932
    Abstract: Classes of cognition models which may include: 1) Radio Environment models, 2) Mobility models and 3) Application/User Context models are utilized in a wireless communications network. Radio Environment models represent the physical aspects of the radio environment, such as shadowing losses, multi-path propagation, interference and noise levels, etc. Mobility models represent users motion, in terms of geo-coordinates and/or logical identifiers, such as street names etc. as well as speed of user terminal etc. The context model represents the present state and dynamics of each of these application processes within itself and between multiple application processes. These data are employed to optimize network performance.
    Type: Application
    Filed: November 25, 2002
    Publication date: August 21, 2003
    Applicant: InterDigital Technology Corporation
    Inventor: Prabhakar R. Chitrapu
  • Publication number: 20030119559
    Abstract: The present invention relates to a method and system using dynamic beam forming for wireless communication signals in a wireless network. Base stations and/or UEs are provided with antenna systems having a range of beam forming selections. Relative base station and UE locations are one type of criteria used to make beam forming decisions.
    Type: Application
    Filed: November 27, 2002
    Publication date: June 26, 2003
    Applicant: InterDigital Technology Corporation
    Inventor: Prabhakar R. Chitrapu
  • Publication number: 20030114195
    Abstract: The present invention relates to a method and system using dynamic beam forming for wireless communication signals in a wireless network. Base stations and/or UEs are provided with antenna systems having a range of beam forming selections. Relative base station and UE locations are one type of criteria used to make beam forming decisions.
    Type: Application
    Filed: November 27, 2002
    Publication date: June 19, 2003
    Applicant: InterDigital Technology Corporation
    Inventors: Prabhakar R. Chitrapu, Steven Jeffrey Goldberg
  • Publication number: 20030114196
    Abstract: The present invention relates to a method and system using dynamic beam forming for wireless communication signals in a wireless network. Base stations and/or UEs are provided with antenna systems having a range of beam forming selections. Relative base station and UE locations are one type of criteria used to make beam forming decisions.
    Type: Application
    Filed: November 27, 2002
    Publication date: June 19, 2003
    Applicant: InterDigital Technology Corporation
    Inventor: Prabhakar R. Chitrapu
  • Publication number: 20030031162
    Abstract: The system and method of the present invention establishes a communication link between a user equipment (UE) and a base station in a communication system having a plurality of base stations which each transmit a common primary synchronization code (PSC) in a primary synchronization channel in conjunction with a base station specific secondary synchronization code (SSC) within a system frame, which receives with the UE an input signal including the PSC and SSC from at least one of the base stations. The UE analyzes the input signal to detect any received PSCs within a selected time period which has duration corresponding to the length of a system frame and determining a relative location of a strongest PSC within the selected time period. The input signal is then processed to remove the PSC from at least the determined PSC location. A secondary synchronization code (SSC) is then detected for the determined location from the processed signal. The communication link is then established using the detected SSCs.
    Type: Application
    Filed: October 31, 2001
    Publication date: February 13, 2003
    Applicant: InterDigital Technology Corporation
    Inventors: Prabhakar R. Chitrapu, Louis J. Guccione, Andrew F. Bednarz
  • Publication number: 20020154638
    Abstract: A system and method for supporting mobile Internet communication is provided which employs a plurality of Routers and a plurality of Mobile Nodes (MNs). Each Router has a unique communication address. Each MN is associated with a home Router. Each Router has an associated Mobile Node Location List identifying each MN for which the Router is the home Router and the communication address of a Router corresponding to a current location of each such MN. Each MN is movable from an old location where the MN communicates with the Internet via one Router to a current location where the MN communicates with the Internet via a different Router. Communication at the current location via the different Router is established by communicating to the MN's home Router the communication address of the different Router as the communication address corresponding to the MN's current location.
    Type: Application
    Filed: February 20, 2002
    Publication date: October 24, 2002
    Applicant: InterDigital Technology Corporation
    Inventors: Sharif M. Shahrier, Prabhakar R. Chitrapu