Patents by Inventor Andrew S. Lange

Andrew S. Lange 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: 8446845
    Abstract: An auditing function detects and corrects reservation and routing topology map errors by monitoring the operation of an advanced bandwidth manager (ABM). A session/call admission controller (S/CAC) attached to a network manages loading with policy enforcement points (PEP's) when the network nears or exceeds its capacity. Ever-changing network topology information is monitored, modeled, and analyzed from remote listeners. A correct model of how traffic is being routed through various parts of the network is critical to admission control. The PEP's at the network edges provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. The S/CAC uses the path tables to calculate whether particular PEP's can admit more traffic, or should they shed sessions/calls to keep service up for the existing application traffic. Long-term controls are periodically downloaded as admission tables from the S/CAC to the PEP's.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: May 21, 2013
    Assignee: Alcatel Lucent
    Inventor: Andrew S. Lange
  • Patent number: 8385194
    Abstract: A network includes an advanced bandwidth manager (ABM) to manage loading when a network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. The ABM gathers strategic information from remote listeners about how traffic is being routed over the whole network, and is abstracted into point-to-point tables. The information gathered also helps to provide long term service planning. Autonomous policy enforcement points (PEP's) provide short term controls on their own. Intelligent action can be taken by the ABM through the PEP's by downloading admission tables based in the point-to-point abstractions. The goal is to keep the highest level of service up for the most users and prevent total failures. Requested network connections are either admitted or denied to these ends.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: February 26, 2013
    Assignee: Alcatel Lucent
    Inventor: Andrew S. Lange
  • Patent number: 8374082
    Abstract: An advanced bandwidth manager (ABM) comprises a session/call admission controller (S/CAC) to manage network ingress traffic when a packet-switched network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. Ever-changing network topology information is gathered from remote listeners about how traffic is being routed through various parts of the network. These reports are harmonized to build a single view of the network topology, and the point-to-point connections are abstracted into path tables. Autonomous policy enforcement points (PEP's) provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. The S/CAC uses the path tables constructed to calculate whether the PEP's can admit more or should shed sessions/calls to keep service up for all existing application traffic. Long-term controls are periodically downloaded as admission tables from the S/CAC to the PEP's.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: February 12, 2013
    Assignee: Alcatel Lucent
    Inventor: Andrew S. Lange
  • Patent number: 8320381
    Abstract: An application-aware policy enforcement point (PEP) attaches to the edge of a packet-switched network to manage loading when the network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. An advanced bandwidth manager (ABM) comprises a session/call admission controller (S/CAC) that monitors and maps ever-changing network topology information gathered from remote listeners about how traffic is being routed through various parts of the network. These reports are harmonized to build a single view of the network topology, and the point-to-point connections are abstracted into path tables. Autonomous PEP's at the network's edges provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. The S/CAC uses the path tables to calculate whether particular PEP's can admit more traffic, or should they shed sessions/calls to keep service up for the existing application traffic.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: November 27, 2012
    Assignee: Alcatel Lucent
    Inventor: Andrew S. Lange
  • Patent number: 8320245
    Abstract: A policy enforcement point (PEP) attaches to the edge of a network to manage loading when the network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. Autonomous PEP's at the network's edges provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. Path tables are used to calculate whether particular PEP's can admit more traffic, or should they shed sessions/calls to keep service up for the existing application traffic. Long-term controls are periodically downloaded as admission tables from a session/call admission controller to the PEP's.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: November 27, 2012
    Assignee: Alcatel Lucent
    Inventor: Andrew S. Lange
  • Patent number: 8320380
    Abstract: A method for video-on-demand (VoD) admission control at a network edge assigns to a triple-play network virtual topology lesser resources than there exists in a corresponding underlying physical link bandwidth. This prevents video-on-demand (VoD) starvation of data-class traffic. At least one policy enforcement point (PEP) is attached to an edge of the network, providing for autonomous short-term, application-aware controls to be applied to corresponding network ingress traffic, and also providing for long-term controls on corresponding network ingress traffic. The network ingress traffic to the network comes under management when the traffic nears or exceeds network capacity. It is enabled to do so by computations of current network routing topology and bandwidth reservations. Path tables are used to calculate if a PEP may admit more, or must shed, sessions/calls to maintain service for other existing application traffic.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: November 27, 2012
    Assignee: Alcatel Lucent
    Inventor: Andrew S. Lange
  • Patent number: 8274983
    Abstract: A policy enforcement point (PEP) attaches to the edge of a packet-switched network to manage loading when the network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. Autonomous PEP's at the network's edges provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. Changes become necessary when a network event results in a loss of resilient bandwidth that effects the traffic class under admission control. Or, when an unexpected surge in traffic exceeds the PEP's reserved resources to a particular destination. The resources available across the network are recalculated for minimizing impact on existing sessions or calls, and it informs the PEP's of the new resources available. If the new maximum exceeds the current utilization to that destination, the PEP invokes a local priority drop mechanism to back off the traffic until it is under the new limit.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: September 25, 2012
    Assignee: Alcatel Lucent
    Inventor: Andrew S. Lange
  • Patent number: 8199679
    Abstract: Example embodiments are directed to methods of configuring a virtual private local area network service for an enterprise. At least one method includes assigning a virtual private local area network instance to a first node within a network. A first node attempts to establish a label distribution protocol session between the first node and at least one other node within the network based on an interior gateway protocol map. The interior gateway protocol map identifies the at least one other node and nodes connected to the at least one other node. The virtual private local area network service is established based on the label distribution protocol sessions that are established.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: June 12, 2012
    Assignee: Alcatel Lucent
    Inventors: Andrew S. Lange, L. Michele Goodwin
  • Publication number: 20100302973
    Abstract: Example embodiments are directed to methods of configuring a virtual private local area network service for an enterprise. At least one method includes assigning a virtual private local area network instance to a first node within a network. A first node attempts to establish a label distribution protocol session between the first node and at least one other node within the network based on an interior gateway protocol map. The interior gateway protocol map identifies the at least one other node and nodes connected to the at least one other node. The virtual private local area network service is established based on the label distribution protocol sessions that are established.
    Type: Application
    Filed: May 29, 2009
    Publication date: December 2, 2010
    Inventors: Andrew S. Lange, L. Michele Goodwin
  • Publication number: 20080225707
    Abstract: An auditing function detects and corrects reservation and routing topology map errors by monitoring the operation of an advanced bandwidth manager (ABM). A session/call admission controller (S/CAC) attached to a network manages loading with policy enforcement points (PEP's) when the network nears or exceeds its capacity. Ever-changing network topology information is monitored, modeled, and analyzed from remote listeners. A correct model of how traffic is being routed through various parts of the network is critical to admission control. The PEP's at the network edges provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. The S/CAC uses the path tables to calculate whether particular PEP's can admit more traffic, or should they shed sessions/calls to keep service up for the existing application traffic. Long-term controls are periodically downloaded as admission tables from the S/CAC to the PEP's.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 18, 2008
    Inventor: Andrew S. Lange
  • Publication number: 20080225709
    Abstract: An advanced bandwidth manager (ABM) comprises a session/call admission controller (S/CAC) to manage network ingress traffic when a packet-switched network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. Ever-changing network topology information is gathered from remote listeners about how traffic is being routed through various parts of the network. These reports are harmonized to build a single view of the network topology, and the point-to-point connections are abstracted into path tables. Autonomous policy enforcement points (PEP's) provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. The S/CAC uses the path tables constructed to calculate whether the PEP's can admit more or should shed sessions/calls to keep service up for all existing application traffic. Long-term controls are periodically downloaded as admission tables from the S/CAC to the PEP's.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 18, 2008
    Inventor: Andrew S. Lange
  • Publication number: 20080225716
    Abstract: A network includes an advanced bandwidth manager (ABM) to manage loading when a network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. The ABM gathers strategic information from remote listeners about how traffic is being routed over the whole network, and is abstracted into point-to-point tables. The information gathered also helps to provide long term service planning. Autonomous policy enforcement points (PEP's) provide short term controls on their own. Intelligent action can be taken by the ABM through the PEP's by downloading admission tables based in the point-to-point abstractions. The goal is to keep the highest level of service up for the most users and prevent total failures. Requested network connections are either admitted or denied to these ends.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 18, 2008
    Inventor: Andrew S. Lange
  • Publication number: 20080225706
    Abstract: A method for video-on-demand (VoD) admission control at a network edge assigns to a triple-play network virtual topology lesser resources than there exists in a corresponding underlying physical link bandwidth. This prevents video-on-demand (VoD) starvation of data-class traffic. At least one policy enforcement point (PEP) is attached to an edge of the network, providing for autonomous short-term, application-aware controls to be applied to corresponding network ingress traffic, and also providing for long-term controls on corresponding network ingress traffic. The network ingress traffic to the network comes under management when the traffic nears or exceeds network capacity. It is enabled to do so by computations of current network routing topology and bandwidth reservations. Path tables are used to calculate if a PEP may admit more, or must shed, sessions/calls to maintain service for other existing application traffic.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 18, 2008
    Inventor: Andrew S. Lange
  • Publication number: 20080225857
    Abstract: A policy enforcement point (PEP) attaches to the edge of a packet-switched network to manage loading when the network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. Autonomous PEP's at the network's edges provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. Changes become necessary when a network event results in a loss of resilient bandwidth that effects the traffic class under admission control. Or, when an unexpected surge in traffic exceeds the PEP's reserved resources to a particular destination. The resources available across the network are recalculated for minimizing impact on existing sessions or calls, and it informs the PEP's of the new resources available. If the new maximum exceeds the current utilization to that destination, the PEP invokes a local priority drop mechanism to back off the traffic until it is under the new limit.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 18, 2008
    Inventor: Andrew S. Lange
  • Publication number: 20080225708
    Abstract: An application-aware policy enforcement point (PEP) attaches to the edge of a packet-switched network to manage loading when the network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. An advanced bandwidth manager (ABM) comprises a session/call admission controller (S/CAC) that monitors and maps ever-changing network topology information gathered from remote listeners about how traffic is being routed through various parts of the network. These reports are harmonized to build a single view of the network topology, and the point-to-point connections are abstracted into path tables. Autonomous PEP's at the network's edges provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. The S/CAC uses the path tables to calculate whether particular PEP's can admit more traffic, or should they shed sessions/calls to keep service up for the existing application traffic.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 18, 2008
    Inventor: Andrew S. Lange
  • Publication number: 20080225712
    Abstract: A policy enforcement point (PEP) attaches to the edge of a network to manage loading when the network nears or exceeds its capacity due to changes in the network, e.g., component failures or incremental growth. Autonomous PEP's at the network's edges provide short-term, application-aware controls on their own that are applied to the corresponding network ingress traffic. Path tables are used to calculate whether particular PEP's can admit more traffic, or should they shed sessions/calls to keep service up for the existing application traffic. Long-term controls are periodically downloaded as admission tables from a session/call admission controller to the PEP's.
    Type: Application
    Filed: March 13, 2007
    Publication date: September 18, 2008
    Inventor: Andrew S. Lange