Patents by Inventor Kalyan R. Dharanipragada

Kalyan R. Dharanipragada 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: 8611270
    Abstract: In one embodiment, a system that employs IGMP (Internet Group Management Protocol) snooping and client tracking to forward an IP multicast flow between a distribution (e.g., wired or backbone) network and a wireless network without the need to configure a VLAN on either infrastructure. A single IP multicast flow is forwarded natively on the distribution network (e.g., from an IP Multicast enabled router) to an AP, and the AP replicates and forwards the multicast flow to a plurality of domains on the wireless network.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: December 17, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Bhawani Sapkota, Tak Ming Francis Pang, Gong Cheng, Kalyan R. Dharanipragada
  • Patent number: 8037305
    Abstract: A method and logic encoded in tangible media and apparatus for securing links between a mesh point and one or more identities of one or more parent mesh points of a wireless mesh network in order to secure the links. A first association is carried out to one of the identities of one of the parent mesh points. The first mesh point undergoes a mutual authentication with an authenticator and announces the possibility of multiple links and/or multiple paths. The authentication generates a first master key from which the root master key of the key hierarchy is derived so that other master keys for different identities are derivable using a hierarchy. The mesh point undergoes a 4-way handshake to derive a first transient key. Other transient keys are obtained by a fast roaming method without having to re-undergo a backend authentication, the other transient keys being for other links and/or paths and derived using the hierarchy.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: October 11, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Shahriar I. Rahman, Nancy Cam-Winget, Kalyan R. Dharanipragada