Patents by Inventor Vijay Pochampalli Kumar

Vijay Pochampalli Kumar 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: 8286002
    Abstract: The invention includes a method and apparatus for providing secure remote access to enterprise networks. An apparatus includes a network interface module adapted for maintaining a secure network connection with a network device independent of a power state of a host computer associated with the apparatus a storage module for storing information associated with the secure connection, and a processor coupled to the network interface and the memory where the processor is adapted for automatically initiating the secure connection without user interaction.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: October 9, 2012
    Assignee: Alcatel Lucent
    Inventors: Sanjay D. Kamat, Pramod V. N. Koppol, Vijay Pochampalli Kumar, Dimitrios Stiliadis
  • Publication number: 20120254944
    Abstract: The invention includes a method and apparatus for providing secure remote access to enterprise networks. An apparatus includes a network interface module adapted for maintaining a secure network connection with a network device independent of a power state of a host computer associated with the apparatus a storage module for storing information associated with the secure connection, and a processor coupled to the network interface and the memory where the processor is adapted for automatically initiating the secure connection without user interaction.
    Type: Application
    Filed: June 11, 2012
    Publication date: October 4, 2012
    Inventors: Sanjay D. Kamat, Pramod V. N. Koppol, Vijay Pochampalli Kumar, Dimitrios Stiliadis
  • Patent number: 8166176
    Abstract: Techniques and systems are disclosed for context-aware migration of a communication network session. For example, a system for migrating a communication session established between a first entity and a second entity in accordance with an application module includes the following elements. A context monitor module supports the application module and is operative to obtain context information associated with at least one of the first entity and the second entity. A migration server module supports the application module and is operative to effectuate a transfer of the communication session from one communication device associated with the first entity to another communication device associated with the first entity. The context monitor module and the migration server module operate in cooperation with the application module to transfer the communication session.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: April 24, 2012
    Assignee: Alcatel Lucent
    Inventors: Vijay Pochampalli Kumar, Chitra A. Phadke, Viswanath Poosala
  • Patent number: 7619990
    Abstract: Disclosed is a two tier packet labeling technique for use in connection with network traceback in a network having multiple autonomous systems, with routers and other network resources within each autonomous system. Tier 1 labels are assigned at the autonomous system level, and tier 2 labels are assigned at the router level. In order to reduce the number of labels that are required, a technique called logical partitioned coloring may be used, in which certain autonomous systems and border routers may be logically partitioned into a plurality of mesh connected nodes, and the labels are assigned to these mesh-connected nodes. During network operation the network routers store either tier 1 or tier 2 labels in data packets. The determination of whether to store a label in any particular packet, and the determination of which label to store, may be determined probabilistically by the network router.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: November 17, 2009
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Mansoor Ali Khan Alicherry, Vijay Pochampalli Kumar, Govindarasu Manimaran, Muthuprasanna Muthusrinivasan
  • Publication number: 20080002725
    Abstract: Disclosed is a two tier packet labeling technique for use in connection with network traceback in a network having multiple autonomous systems, with routers and other network resources within each autonomous system. Tier 1 labels are assigned at the autonomous system level, and tier 2 labels are assigned at the router level. In order to reduce the number of labels that are required, a technique called logical partitioned coloring may be used, in which certain autonomous systems and border routers may be logically partitioned into a plurality of mesh connected nodes, and the labels are assigned to these mesh-connected nodes. During network operation the network routers store either tier 1 or tier 2 labels in data packets. The determination of whether to store a label in any particular packet, and the determination of which label to store, may be determined probabilistically by the network router.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 3, 2008
    Inventors: Mansoor Ali Khan Alicherry, Vijay Pochampalli Kumar, Govindarasu Manimaran, Muthuprasanna Muthusrinivasan
  • Publication number: 20070282990
    Abstract: Techniques and systems are disclosed for context-aware migration of a communication network session. For example, a system for migrating a communication session established between a first entity and a second entity in accordance with an application module includes the following elements. A context monitor module supports the application module and is operative to obtain context information associated with at least one of the first entity and the second entity. A migration server module supports the application module and is operative to effectuate a transfer of the communication session from one communication device associated with the first entity to another communication device associated with the first entity. The context monitor module and the migration server module operate in cooperation with the application module to transfer the communication session.
    Type: Application
    Filed: May 31, 2006
    Publication date: December 6, 2007
    Inventors: Vijay Pochampalli Kumar, Chitra A. Phadke, Viswanath Poosala
  • Patent number: 6144666
    Abstract: In an asynchronous transfer mode (ATM) communications system, all ATM switches in a multicast connection perform virtual path (VP) switching except those merge points which perform virtual channel (VC) switching to avoid VCI collisions. The merge points are ATM switches which can merge ATM traffic from at least two incoming links into an outgoing link. In a second approach, each merge point in a multicast connection performs VP switching, and dynamically dispenses VC switching when a VCI collision is detected. Specifically, to prevent further VCI collision, incoming ATM cells indicated by an odd VPI value are VC switched by the merge point while those indicated by an even VPI value are VP switched thereby.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: November 7, 2000
    Assignee: Lucent Technologies Inc.
    Inventors: Xiaoqiang Chen, Vijay Pochampalli Kumar, Cauligi Srinivasa Raghavendra, Ramanathan Venkateswaran
  • Patent number: 6021116
    Abstract: A method and apparatus for computing a congestion indicator in a communications switch including monitoring at least one first congestion indicator in the communication switch, computing an arrival rate and a first and a second service rate, incrementing a second congestion indicator using the arrival rate, and decrementing the second congestion indicator using the first and second service rates. The method and apparatus are used for deciding to store the data and electronic code that arrives at a communications switch when the second congestion indicator is below a first threshold, and for deciding not to store the data and electronic code that arrives at a communications switch when the second congestion indicator equals or exceeds the first threshold. The method and apparatus are also used for controlling the data transfer rates of data sources in an ATM-based network when both available bit rate and other traffic is present in a communications switch.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: February 1, 2000
    Assignee: Lucent Technologies, Inc.
    Inventors: Fabio Massimo Chiussi, Vijay Pochampalli Kumar, Ye Xia
  • Patent number: 5946316
    Abstract: The distribution of multicast information in a communications network formed from a plurality of communications nodes, e.g., ATM switches, is enhanced by providing an efficient mechanism for routing a request to join a multicast connection to an originator of the multicast and an efficient mechanism for then connecting the requester to the multicast connection.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: August 31, 1999
    Assignee: Lucent Technologies, Inc.
    Inventors: Xiaoqiang Chen, Vijay Pochampalli Kumar, Cauligi Srinivasa Raghavendra, Ramanathan Venkateswaran
  • Patent number: 5905711
    Abstract: A method and apparatus for controlling the data transfer rates of data sources in an asynchronous transfer mode-based network utilizing intelligent marking to identify those data sources with a data transfer rate exceeding a marking threshold and to direct those thus-identified data sources to reduce their data transfer rates, and to identify those data sources with a data transfer rate lower than a marking threshold and to direct those thus-identified data sources to increase their data transfer rates when the maximum data transfer rate at a communications switch exceeds a first threshold When the maximum data transfer rate at the communications switch exceeds a second thresholds directing all data sources to reduce their data transfer rates. The first and the second thresholds are based on a congestion indicator of available bit rate traffic stored in a buffer in the communications switch.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: May 18, 1999
    Assignee: Lucent Technologies Inc.
    Inventors: Fabio Massimo Chiussi, Vijay Pochampalli Kumar, Ye Xia
  • Patent number: 5831975
    Abstract: The present invention extends the PNNI protocols to support hierarchical multicast routing and signaling for ATM networks. The invention utilizes an extension to a core-based tree algorithm. Instead of a single core node, core nodes are maintained in each peer-group and at each level of the hierarchy. The advantage of this is that one single core node is not overloaded. Additionally, this increases fault-tolerance because there are no single points of failure. As would be understood, the present invention is highly scaleable because of the hierarchical nature of PNNI. In addition, the scheme supports multiple senders and dynamic membership changes to the multicast group. Quality of service requirements can be negotiated during connection setup and are guaranteed during the course of the connection. Though some additional topological information has to be flooded in the peer-groups to compute efficient multicast routes, the overheads to the connection management are minimal.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: November 3, 1998
    Assignee: Lucent Technologies Inc.
    Inventors: Xiaoqiang Chen, Vijay Pochampalli Kumar, Cauligi Srinivasa Raghavendra, Ramanathan Venkateswaran
  • Patent number: 5701292
    Abstract: A method and apparatus for controlling the data transfer rates of data sources in an asynchronous transfer mode-based network utilizes maximum and minimum data transfer rates of sources in the network. A switch instructs data sources within the network to modify their data transfer rates by detecting "potential congestion" and "congested" states.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: December 23, 1997
    Assignee: Lucent Technologies Inc.
    Inventors: Fabio Massimo Chiussi, Vijay Pochampalli Kumar, Christos Tryfonas, Muddu Sudhakar
  • Patent number: 5689506
    Abstract: Multicasting of an ingress cell received at one of a plurality of input ports is provided through a multistage switching network to one or more of a plurality of output ports. An ingress cell including a data payload and information identifying output ports of the network is received at one of the input ports of a first stage of the network. A determination is made of the minimum number of first output ports of the first stage of the network to which a single copy of the ingress cell is to be outputted to enable the ingress cell to reach all of the identified output ports. The single copy of the ingress cell is then routed to the minimum number of first output ports of the first stage of the network.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: November 18, 1997
    Assignee: Lucent Technologies Inc.
    Inventors: Fabio Massimo Chiussi, Joseph George Kneuer, Vijay Pochampalli Kumar
  • Patent number: 5689500
    Abstract: Multicasting of an ingress cell received at one of a plurality of input ports is provided through a multistage network to a plurality of output ports. The received ingress cell at a first input port includes a data payload and information identifying one or more routing queues to which a single copy of the data payload is to be outputted. A backpressure queue assignment is identified for the first ingress cell, the backpressure queue assignment identifying a backpressure indicator indicative of the congestion level at at least one routing queue of a subsequent stage. Using the backpressure indicator, it is determined if the first ingress cell is to be outputted from one or more of the routing queues. Thereafter, the first ingress cell is outputted from one or more of the routing queues when the congestion level is below or equal to a first threshold.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: November 18, 1997
    Assignee: Lucent Technologies, Inc.
    Inventors: Fabio Massimo Chiussi, Joseph George Kneuer, Vijay Pochampalli Kumar
  • Patent number: 5689505
    Abstract: Multicasting of an ingress cell received at one of a plurality of input ports is provided through a switch network to one or more of a plurality of output ports. The received ingress cell includes a data payload and a bitmap segment identifying the one or more output ports to which the data payload is to be outputted. The data payload is stored in an available cell buffer; associated with each cell buffer is a reference counter for storing a number equal to the number of ports to which that ingress cell is to be outputted. The bitmap segment is used to identify output ports to which the data payload is to be delivered, and a plurality of linked list queues in the memory, one for each of the output ports, is established. The bitmap segment is interpreted to identify output ports to which the data payload is to be delivered and an entry is made into the associated linked list output queue.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: November 18, 1997
    Assignee: Lucent Technologies Inc.
    Inventors: Fabio Massimo Chiussi, Joseph George Kneuer, Vijay Pochampalli Kumar
  • Patent number: 5671222
    Abstract: An apparatus and method is described for multicasting an inlet data cell, received as part of a multicast request, through a self-routing multistage routing network by decomposing the multicast request into one or more intermediate multicast requests, each intermediate multicast request being a unique subset of the original multicast request which enables a non-blocking, self-routing distribution to a subset of the desired outlets of the original multicast request in one or two passes through the network, and by generating a non-blocking multicast tree based on the intermediate multicast requests and routing the received inlet data cell to the desired outlets. The invention decomposes the original multicast request and generates a non-blocking multicast tree using a cube routing algorithm, a copy routing algorithm, or a combined routing algorithm, which is a combination of the copy and cube routing algorithms.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: September 23, 1997
    Assignee: Lucent Technologies Inc.
    Inventors: Xiaoqiang Chen, Vijay Pochampalli Kumar