Patents by Inventor Patrice R. Calhoun

Patrice R. Calhoun 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: 10009833
    Abstract: Methods, apparatuses and systems facilitating deployment and configuration of managed access points in hierarchical wireless network systems. An embodiment of the invention facilitates deployment and configuration of conventional, substantially autonomous access points operating in connection with a central management node, such as a server or appliance. In another embodiment, the present invention facilitates deployment and configuration of light-weight access points in a hierarchical wireless network system. In one embodiment, the present invention also provides a streamlined encryption key exchange protocol adapted to hierarchical wireless network system architectures.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: June 26, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Patrice R. Calhoun, Scott G. Kelly, Rohit Kumar Suri
  • Publication number: 20160029301
    Abstract: Methods, apparatuses and systems facilitating deployment and configuration of managed access points in hierarchical wireless network systems. An embodiment of the invention facilitates deployment and configuration of conventional, substantially autonomous access points operating in connection with a central management node, such as a server or appliance. In another embodiment, the present invention facilitates deployment and configuration of light-weight access points in a hierarchical wireless network system. In one embodiment, the present invention also provides a streamlined encryption key exchange protocol adapted to hierarchical wireless network system architectures.
    Type: Application
    Filed: October 1, 2015
    Publication date: January 28, 2016
    Inventors: Patrice R. Calhoun, Scott G. Kelly, Rohit Kumar Suri
  • Patent number: 9185714
    Abstract: According to one embodiment, a method includes monitoring, at one or more wireless network access elements, signal strength of signals transmitted by respective neighboring wireless network access elements. Information is collected from said wireless network access elements and converted into reportable data about signal strength observed during the monitoring. The method further includes identifying, based at least in part on interference associated with concurrent signal transmissions of the wireless network access elements, a combination of channel assignments for the one or more wireless network access elements from a plurality of possible combinations of channel assignments and assigning channels for concurrent, respective use by said wireless network access elements based on the identified combination of channel assignments.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: November 10, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Robert J. Friday, Patrice R. Calhoun, Robert B. O'Hara, Jr., Alexander H. Hills, Paul F. Dietrich
  • Patent number: 9179398
    Abstract: Methods, apparatuses and systems facilitating deployment and configuration of managed access points in hierarchical wireless network systems. An embodiment of the invention facilitates deployment and configuration of conventional, substantially autonomous access points operating in connection with a central management node, such as a server or appliance. In another embodiment, the present invention facilitates deployment and configuration of light-weight access points in a hierarchical wireless network system. In one embodiment, the present invention also provides a streamlined encryption key exchange protocol adapted to hierarchical wireless network system architectures.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: November 3, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Patrice R. Calhoun, Scott G. Kelly, Rohit Kumar Suri
  • Publication number: 20140029526
    Abstract: According to one embodiment, a method includes monitoring, at one or more wireless network access elements, signal strength of signals transmitted by respective neighboring wireless network access elements. Information is collected from said wireless network access elements and converted into reportable data about signal strength observed during the monitoring. The method further includes identifying, based at least in part on interference associated with concurrent signal transmissions of the wireless network access elements, a combination of channel assignments for the one or more wireless network access elements from a plurality of possible combinations of channel assignments and assigning channels for concurrent, respective use by said wireless network access elements based on the identified combination of channel assignments.
    Type: Application
    Filed: June 14, 2013
    Publication date: January 30, 2014
    Inventors: Robert J. Friday, Patrice R. Calhoun, Robert B. O'Hara, Alexander H. Hills, Paul F. Dietrich
  • Publication number: 20130343367
    Abstract: Methods, apparatuses and systems facilitating deployment and configuration of managed access points in hierarchical wireless network systems. An embodiment of the invention facilitates deployment and configuration of conventional, substantially autonomous access points operating in connection with a central management node, such as a server or appliance. In another embodiment, the present invention facilitates deployment and configuration of light-weight access points in a hierarchical wireless network system. In one embodiment, the present invention also provides a streamlined encryption key exchange protocol adapted to hierarchical wireless network system architectures.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 26, 2013
    Inventors: Patrice R. Calhoun, Scott G. Kelly, Rohit Kumar Suri
  • Patent number: 8559306
    Abstract: A packet aggregation system. In particular implementations, a method includes accessing one or more transmit queues, each corresponding to a wireless client associated with a given wireless mesh access point of a plurality of mesh access points. The method further includes selecting a mesh access point of the plurality of mesh access points and selecting a transmit queue corresponding to a wireless client associated with the selected mesh access point. The method further includes aggregating packets that are destined for the selected wireless client, up to a size limit, taking into account the path to the selected mesh point as well as quality of service constraints, and composing and transmitting the aggregated packet to the selected mesh access point.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: October 15, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaohong Gong, Patrice R. Calhoun, Robert B. O'Hara, Jr., David S. Stephenson, Johannes Petrus Kruys, Lu Qian
  • Patent number: 8467362
    Abstract: Methods, apparatuses and systems facilitating deployment and configuration of managed access points in hierarchical wireless network systems. An embodiment of the invention facilitates deployment and configuration of conventional, substantially autonomous access points operating in connection with a central management node, such as a server or appliance. In another embodiment, the present invention facilitates deployment and configuration of light-weight access points in a hierarchical wireless network system. In one embodiment, the present invention also provides a streamlined encryption key exchange protocol adapted to hierarchical wireless network system architectures.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: June 18, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Patrice R. Calhoun, Scott G. Kelly, Rohit Kumar Suri
  • Publication number: 20120188993
    Abstract: Methods, apparatuses and systems facilitating deployment and configuration of managed access points in hierarchical wireless network systems. An embodiment of the invention facilitates deployment and configuration of conventional, substantially autonomous access points operating in connection with a central management node, such as a server or appliance. In another embodiment, the present invention facilitates deployment and configuration of light-weight access points in a hierarchical wireless network system. In one embodiment, the present invention also provides a streamlined encryption key exchange protocol adapted to hierarchical wireless network system architectures.
    Type: Application
    Filed: April 6, 2012
    Publication date: July 26, 2012
    Applicant: Cisco Technology, Inc.
    Inventors: Patrice R. Calhoun, Scott G. Kelly, Rohit Kumar Suri
  • Patent number: 8169987
    Abstract: Methods, apparatuses and systems facilitating deployment and configuration of managed access points in hierarchical wireless network systems. An embodiment of the invention facilitates deployment and configuration of conventional, substantially autonomous access points operating in connection with a central management node, such as a server or appliance. In another embodiment, the present invention facilitates deployment and configuration of light-weight access points in a hierarchical wireless network system. In one embodiment, the present invention also provides a streamlined encryption key exchange protocol adapted to hierarchical wireless network system architectures.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: May 1, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Patrice R. Calhoun, Scott G. Kelly, Rohit Kumar Suri
  • Patent number: 8089974
    Abstract: Methods, apparatuses and systems facilitating location or containment of rogue or unauthorized access points on wireless computer network environments. Embodiments of the present invention support one to a plurality of rogue containment methodologies. A first rogue containment type involves identification of the physical connection of the rogue access point to the wired network infrastructure and, thus, allows for disabling of that physical connection to contain the rogue access point. Other rogue containment methods involve wireless techniques for containing the effect of rogue access points. In some embodiments, the present invention provides methods, apparatuses and systems facilitating network location of rogue access points to determine whether one or more rogue containment methodologies should be applied. As discussed below, the rogue location and containment functionality described herein can be applied to a wide variety of wireless network system architectures.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: January 3, 2012
    Assignee: Cisco Systems, Inc.
    Inventors: Patrice R. Calhoun, Robert J. Friday, Robert B. O'Hara, Jr., Brett Galloway, David Anthony Frascone, Paul F. Dietrich, Sudhir Kumar Jain
  • Patent number: 8040861
    Abstract: In a wireless Local Area Network (WLAN) system, a hierarchical architecture is provided which employs a protocol which divides protocol processing functions between a plurality of substantially identical access elements in which reside time-critical protocol functions, such as acknowledgment and retransmission of packets, and a centralized control element which provides control and management functions related to dynamic configuration of wireless networks, such as processing of network management messages (e.g., authentication and association), load control, channel control, and handoff, processing of physical layer information, and processing of channel characteristics, propagation, interference or noise, for the plurality of access elements on the WLAN without loss of information about the wireless characteristics of the access elements.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: October 18, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Patrice R. Calhoun, Robert B. O'Hara, Jr.
  • Patent number: 8000308
    Abstract: Methods, apparatuses and systems facilitating containment of the effects of rogue or unauthorized access points on wireless computer network environments. Embodiments of the present invention support one to a plurality of rogue containment methodologies. A first rogue containment type involves identification of the physical connection of the rogue access point to the wired network infrastructure and, thus, allows for disabling of that physical connection to contain the rogue access point. Other rogue containment methods involve wireless techniques for containing the effect of rogue access points. As discussed below, the rogue containment functionality described herein can be applied to a wide variety of wireless network system architectures.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: August 16, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Paul F. Dietrich, David Anthony Frascone, Patrice R. Calhoun, Robert J. Friday, Robert B. O'Hara, Jr., Mathew Douglas Howard
  • Patent number: 7966489
    Abstract: In one embodiment, a method for facilitating authentication and ease the configuration of authentication includes receiving a credential type selection and selecting one or more authentication types based on the credential type selection and one or more policies set by the administrators. The policies can be preconfigured or dynamically pushed or fetched and updated to the client.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: June 21, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Nancy Cam-Winget, Hao Zhou, Robert B. O'Hara, Jr., Patrice R. Calhoun, Jeremy Stieglitz
  • Patent number: 7917146
    Abstract: Methods, apparatuses, and systems directed to facilitating roaming and client handoffs in wireless networks. In one implementation, the present invention is directed to a coordination mechanism facilitating handoffs of wireless clients in a wireless network infrastructure. In one implementation, the coordination mechanism minimizes the use of group- or multi-casting to provide a scalable wireless network roaming infrastructure.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: March 29, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Patrice R. Calhoun, Joshua Glenn Broch, Robert B. O'Hara, Jr.
  • Patent number: 7809354
    Abstract: Methods, apparatuses and systems directed to detecting address spoofing in wireless networks by, after receiving a wireless management frame, transmitting verification messages to determine whether a given wireless node (e.g., a wireless access point, or wireless client) has legitimately lost its connection state.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: October 5, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Patrice R. Calhoun, Nancy Cam-Winget, Mark Krischer, Robert B. O'Hara, Jr.
  • Patent number: 7672459
    Abstract: Methods, apparatuses, and systems directed to a key distribution and caching mechanism that facilitates roaming in wireless networks. In one implementation, the present invention reduces the latency associated with handoffs by reducing the time required to set up encryption or other secure access mechanisms between access points and clients in the wireless network infrastructure. In one implementation, the present invention operates proactively to distribute authentication credential information to selected components of the wireless network infrastructure before a client roams to another access point.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: March 2, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Robert B. O'Hara, Jr., Patrice R. Calhoun, Joshua Glenn Broch
  • Patent number: 7643442
    Abstract: Methods, apparatuses and systems directed to the dynamic configuration of QoS policy for sessions in wireless network environments. Certain embodiments of the present invention feature the transparent processing of session initiation messages associated with wireless clients and the dynamic configuration of QoS policy for the wireless clients having no QoS configuration mechanism. In certain embodiments, the dynamic QoS configuration mechanism is transparent to the wireless clients, requiring no QoS functionality to reside on the wireless clients. Certain embodiments of the present invention transparently process SIP messages to dynamically configure QoS policy for the resulting sessions. As discussed below, the dynamic QoS configuration functionality described herein can be applied to a variety of wireless network system architectures.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: January 5, 2010
    Assignee: Cisco Systems, Inc.
    Inventor: Patrice R. Calhoun
  • Publication number: 20090296658
    Abstract: Methods, apparatuses, and systems directed to facilitating roaming and client handoffs in wireless networks. In one implementation, the present invention is directed to a coordination mechanism facilitating handoffs of wireless clients in a wireless network infrastructure. In one implementation, the coordination mechanism minimizes the use of group- or multi-casting to provide a scalable wireless network roaming infrastructure.
    Type: Application
    Filed: August 13, 2009
    Publication date: December 3, 2009
    Applicant: Cisco Technology, Inc.
    Inventors: Patrice R. Calhoun, Joshua Glenn Broch, Robert B. O'Hara, JR.
  • Publication number: 20090271864
    Abstract: Methods, apparatuses and systems facilitating containment of the effects of rogue or unauthorized access points on wireless computer network environments. Embodiments of the present invention support one to a plurality of rogue containment methodologies. A first rogue containment type involves identification of the physical connection of the rogue access point to the wired network infrastructure and, thus, allows for disabling of that physical connection to contain the rogue access point. Other rogue containment methods involve wireless techniques for containing the effect of rogue access points. As discussed below, the rogue containment functionality described herein can be applied to a wide variety of wireless network system architectures.
    Type: Application
    Filed: October 20, 2008
    Publication date: October 29, 2009
    Applicant: Cisco Systems, Inc.
    Inventors: Paul F. Dietrich, David Anthony Frascone, Patrice R. Calhoun, Robert J. Friday, Robert B. O'Hara, JR., Mathew Douglas Howard