Patents by Inventor Ravi S. Prasad

Ravi S. Prasad 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: 8289851
    Abstract: A lightweight probabilistic mechanism used to estimate the number of active flows, which estimate is used to determine the probability of admitting a new flow into the network. In one embodiment, a method for controlling admission of new flows at a node in a network of nodes interconnected by links includes: (a) for each of a plurality of incoming packets arriving at the node, each incoming packet corresponding to an active flow traversing the node: (a1) randomly selecting a packet from an output buffer of the node; (a2) determining whether the incoming packet is from the same active flow as the randomly-selected packet; and (a3) updating an estimate of the number of active flows traversing the node based on the determination of step (a2); and (b) determining whether to admit or drop part or all of a new flow at the node based on the estimated number of active flows traversing the node.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: October 16, 2012
    Assignee: Alcatel Lucent
    Inventors: Tirunell V. Lakshman, Ravi S. Prasad, Marina K. Thottan
  • Publication number: 20080267068
    Abstract: A lightweight probabilistic mechanism used to estimate the number of active flows, which estimate is used to determine the probability of admitting a new flow into the network. In one embodiment, a method for controlling admission of new flows at a node in a network of nodes interconnected by links includes: (a) for each of a plurality of incoming packets arriving at the node, each incoming packet corresponding to an active flow traversing the node: (a1) randomly selecting a packet from an output buffer of the node; (a2) determining whether the incoming packet is from the same active flow as the randomly-selected packet; and (a3) updating an estimate of the number of active flows traversing the node based on the determination of step (a2); and (b) determining whether to admit or drop part or all of a new flow at the node based on the estimated number of active flows traversing the node.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventors: Tirunell V. Lakshman, Ravi S. Prasad, Marina K. Thottan
  • Patent number: 4314057
    Abstract: A purified bioactive compound of the formula: ##STR1## wherein: Q is selected from the group consisting of OY and NZ.sub.1 Z.sub.2 ;Y is selected from the group consisting of H, alkyl, hydroxyalkyl, aminoalkyl, substituted aminoalkyl, aryl and a pharmaceutically acceptable cation;Z.sub.1 and Z.sub.2 are selected from the group consisting of H, alkyl, hydroxyalkyl, aminoalkyl, substituted aminoalkyl and aryl;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are selected from the group consisting of H, alkyl, hydroxyalkyl, aminoalkyl, substituted aminoalkyl, aryl and ##STR2## W is selected from the group consisting of H, alkyl, hydroxyalkyl, aminoalkyl, substituted aminoalkyl and aryl.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: February 2, 1982
    Assignee: Research Corporation
    Inventors: Francis J. Schmitz, Dick van der Helm, M. Bilayet Hossain, Yalamanchili Gopichand, Ravi S. Prasad
  • Patent number: 4302470
    Abstract: A purified bioactive compound of the formula: ##STR1## wherein: Q is selected from the group consisting of OY and NZ.sub.1 Z.sub.2 ;Y is selected from the group consisting of H, alkyl, hydroxyalkyl, aminoalkyl, substituted aminoalkyl, aryl and a pharmaceutically acceptable cation;Z.sub.1 and Z.sub.2 are selected from the group consisting of H, alkyl, hydroxyalkyl, aminoalkyl, substituted aminoalkyl and aryl;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are selected from the group consisting of H, alkyl, hydroxyalkyl, aminoalkyl, substituted aminoalkyl, aryl and ##STR2## and W is selected from the group consisting of H, alkyl, hydroxyalkyl, aminoalkyl, substituted aminoalkyl and aryl.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: November 24, 1981
    Assignee: Research Corporation
    Inventors: Francis J. Schmitz, Dick van der Helm, M. Bilayet Hossain, Yalamanchili Gopichand, Ravi S. Prasad