Patents by Inventor Chandra S. Chekuri

Chandra S. Chekuri 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: 8675493
    Abstract: A method of providing at least one restoration path for a primary routing path in a network. The method includes receiving a customer connection request to route information. Costs are assigned for the primary routing path, and the primary routing path is computed based upon the primary routing path costs. A backtracking distance over the primary routing path is determined, and costs for at least one restoration path are assigned. The at least one restoration path may then be computed based upon the at least one restoration path costs.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: March 18, 2014
    Assignee: Alcatel Lucent
    Inventors: Milind M. Buddhikot, Chandra S. Chekuri, Katherine H. Guo, Li Li
  • Patent number: 7142523
    Abstract: Techniques for use in designing, adjusting or operating a wireless network so as to provide a desired level of performance for the network. An optimization process is applied to a set of information characterizing the network. The optimization process includes at least a pre-frequency-assignment optimization stage, which is applied prior to assignment of frequencies to one or more communication channels of the wireless network. An output of the optimization process is utilized to determine one or more operating parameters of the wireless network, such as a base station transmit power or antenna orientation.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: November 28, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: Chandra S. Chekuri, Lawrence M. Drabeck, Yihao Lisa Zhang
  • Patent number: 6925066
    Abstract: Techniques for use in designing, adjusting or operating a wireless network so as to provide a desired level of performance for the network. An optimization process is applied to a set of information characterizing the network. The optimization process is implemented as a multi-stage process which includes at least a frequency assignment stage and a post-frequency-assignment optimization stage, wherein the frequency assignment stage and the post-frequency-assignment stage are subject to iteration. For example, after an initial assignment of the frequencies in the frequency assignment stage, the post-frequency-assignment optimization stage may be performed, and based on the result of the optimization, at least one of the frequency assignment stage and the post-frequency-assignment optimization stage may be repeated. An output of the optimization process is utilized to determine one or more operating parameters of the wireless network, such as a base station transmit power or antenna orientation.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: August 2, 2005
    Assignee: Lucent Technologies Inc.
    Inventors: Chandra S. Chekuri, Lawrence M. Drabeck, Karl Georg Hampel, Paul Anthony Polakos, Yihao Lisa Zhang
  • Publication number: 20040004938
    Abstract: A method of providing at least one restoration path for a primary routing path in a network. The method includes receiving a customer connection request to route information. Costs are assigned for the primary routing path, and the primary routing path is computed based upon the primary routing path costs. A backtracking distance over the primary routing path is determined, and costs for at least one restoration path are assigned. The at least one restoration path may then be computed based upon the at least one restoration path costs.
    Type: Application
    Filed: July 2, 2002
    Publication date: January 8, 2004
    Applicant: LUCENT TECHNOLOGIES
    Inventors: Milind M. Buddhikot, Chandra S. Chekuri, Katherine H. Guo, Li Li