Patents by Inventor Subhabrata Sen

Subhabrata Sen 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: 9167480
    Abstract: Systems and methods for controlling a wireless device by a user based on bandwidth used when the device is connected to a network are disclosed. The bandwidth used by a process when the wireless device is connected to a network is determined. Information associating the value of the bandwidth used by the process when connected to the network, with at least one characteristic of the network is provided. A bandwidth management profile that identifies what process is allowed to be executed on each network is generated. The bandwidth management profile is used to determine whether the process should be executed on the network.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: October 20, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Jeffrey Erman, Subhabrata Sen
  • Publication number: 20150212563
    Abstract: A rating is provided for a computing application. Traffic data, power data, and/or network signaling load data is collected for a computing application and compared with other similar data. A rating for the computing application is provided based on the comparison.
    Type: Application
    Filed: April 6, 2015
    Publication date: July 30, 2015
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Alexandre Gerber, Zhuaqing Mao, Feng Qian, Subhabrata Sen, Oliver Spatscheck, Zhaoguang Wang
  • Publication number: 20150156812
    Abstract: A method, computer-readable storage device and apparatus for closing a transmission control protocol connection in a wireless network are disclosed. For example, the method sends a first transmission control protocol option requesting a use of a silent transmission control protocol closure for the transmission control protocol connection, receives a confirmation from a recipient device that silent transmission control protocol closure is to be used for the transmission control protocol connection, sends a second transmission control protocol option that indicates a connection timeout period for the sender device, receives a connection timeout period for the recipient device, tracks the connection timeout period for the sender device and the connection timeout period for the recipient device, and closes the transmission control protocol connection when one of the connection timeout period for the sender device or the connection timeout period for the recipient device has expired.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 4, 2015
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: FENG QIAN, Subhabrata Sen, Oliver Spatscheck
  • Publication number: 20150131471
    Abstract: Analyzing mobile device applications within a wireless data network and other related aspects are presented herein. More particularly, described herein is a novel Intelligent Mobility Application Profiling Tool (iMAP) and/or other mechanisms, systems and methods for profiling and benchmarking applications associated with mobile devices in a wireless data network. Various systems and methods described herein expose cross-layer interaction associated with a network device in order to profile an application on the network device with respect to energy efficiency, performance, and functionality. As described herein, radio resource control (RRC) analysis can be performed to infer RRC states associated with a given application, identify tail time, etc. Further, analyzers are employed for various layers, including transmission control protocol (TCP) and/or hypertext transfer protocol (HTTP), as well as to analyze communication bursts associated with a given application.
    Type: Application
    Filed: January 21, 2015
    Publication date: May 14, 2015
    Inventors: Alexandre Gerber, Zhuoqing Morley Mao, Feng Qian, Subhabrata Sen, Oliver Spatscheck, Zhaoguang Wang
  • Patent number: 9003017
    Abstract: A rating is provided for a computing application. Traffic data, power data, and/or network signaling load data is collected for a computing application and compared with other similar data. A rating for the computing application is provided based on the comparison.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: April 7, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Alexandre Gerber, Zhuaqing Mao, Feng Qian, Subhabrata Sen, Oliver Spatscheck, Zhaoguang Wang
  • Patent number: 8972572
    Abstract: Analyzing mobile device applications within a wireless data network and other related aspects are presented herein. More particularly, described herein is a novel Intelligent Mobility Application Profiling Tool (iMAP) and/or other mechanisms, systems and methods for profiling and benchmarking applications associated with mobile devices in a wireless data network. Various systems and methods described herein expose cross-layer interaction associated with a network device in order to profile an application on the network device with respect to energy efficiency, performance, and functionality. As described herein, radio resource control (RRC) analysis can be performed to infer RRC states associated with a given application, identify tail time, etc. Further, analyzers are employed for various layers, including transmission control protocol (TCP) and/or hypertext transfer protocol (HTTP), as well as to analyze communication bursts associated with a given application.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: March 3, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Alexandre Gerber, Zhuoqing Morley Mao, Feng Qian, Subhabrata Sen, Oliver Spatscheck, Zhaoguang Wang
  • Patent number: 8959243
    Abstract: A method includes identifying shared content by inspecting a peer-to-peer traffic flow and identifying source peers providing the shared content, and requesting the shared content from the source peers. The method further includes receiving requests for the shared content from requesting peers, identifying requesting peers based on the requests for the shared content, and providing the shared content to a local subset of the requesting peers.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: February 17, 2015
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Alexandre Gerber, Oliver Spatscheck, Subhabrata Sen, Ajay Todimala
  • Patent number: 8948043
    Abstract: A method, computer readable medium and apparatus for normalizing cellular communications network data are disclosed. For example, the method collects a data packet from the cellular communications network, modifies a time stamp of the data packet in accordance with a promotion delay time from the time stamp of the data packet to create a normalized data packet and processes the normalized data packet to optimize state machine configurations.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: February 3, 2015
    Assignees: AT&T Intellectual Property I, L.P., University of Michigan
    Inventors: Alexandre Gerber, Zhuoqing Mao, Feng Qian, Subhabrata Sen, Oliver Spatscheck, Zhaoguang Wang
  • Patent number: 8948048
    Abstract: A method and apparatus for characterizing an infrastructure of a wireless network are disclosed. For example, the method obtains a first data set from a server log, and obtains a second data set from a plurality of wireless endpoint device. The method characterizes a parameter of the infrastructure of the wireless network using the first data set and the second data set and optimizes a network resource of the wireless network based on the parameter.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: February 3, 2015
    Assignees: AT&T Intellectual Property I, L.P., University of Michigan
    Inventors: Alexandre Gerber, Seungjoon Lee, Zhuoqing Mao, Feng Qian, Subhabrata Sen, Zhaoguang Wang, Qiang Xu
  • Patent number: 8935188
    Abstract: In one embodiment, the present disclosure is a method and apparatus for classifying applications using the collective properties of network traffic. In one embodiment, a method for classifying traffic in a communication network includes receiving a traffic activity graph, the traffic activity graph comprising a plurality of nodes interconnected by a plurality of edges, where each of the nodes represents an endpoint associated with the communication network and each of the edges represents traffic between a corresponding pair of the nodes, generating an initial set of inferences as to an application class associated with each of the edges, based on at least one measured statistic related to at least one traffic flow in the communication network, and refining the initial set of inferences based on a spatial distribution of the traffic flows, to produce a final traffic activity graph.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: January 13, 2015
    Assignees: AT&T Intellectual Property I, L.P., Regents of the University of Minnesota
    Inventors: Nicholas Duffield, Patrick Haffner, Yu Jin, Subhabrata Sen, Zhi-Li Zhang
  • Patent number: 8935240
    Abstract: A method, computer readable medium and system for automatically tracking content in a peer-to-peer environment are disclosed. For example, the method monitors a number of times each content title of a plurality of content titles are downloaded in the peer-to-peer environment, adds one or more content titles of the plurality of content titles that are downloaded above a predetermined threshold to a list, downloads each one of the one or more content titles in the list via the peer-to-peer environment and verifies that each one of the one or more content titles that are downloaded matches at least one content title in the list.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: January 13, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Alexandre Gerber, Subhabrata Sen, Oliver Spatscheck, Ajay Todimala
  • Patent number: 8880614
    Abstract: A method and apparatus for providing protection for mail servers in networks such as the packet networks are disclosed. For example, the present method detects a mail server is reaching its processing limit. The method then selectively limits connections to the mail server from a plurality of source nodes based on a spam index associated with each of the source nodes.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: November 4, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Albert G. Greenberg, Patrick Haffner, Subhabrata Sen, Oliver Spatscheck
  • Patent number: 8817653
    Abstract: A packet trace is received. Transmitted bytes and retransmitted bytes are identified in the packet trace. Upon identifying the transmitted bytes and the retransmitted bytes in the packet trace, one or more time-rate pairs are determined from the packet trace. The time-rate pairs are plotted on a rate tracking graph.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: August 26, 2014
    Assignees: AT&T Intellectual Property I, L.P., The Regents of the University of Michigan
    Inventors: Alexandre Gerber, Zhuoqing Mao, Feng Qian, Subhabrata Sen, Oliver Spatscheck, Walter Willinger
  • Patent number: 8813213
    Abstract: An application provisioning device may be used to manage a profile of a host and provide data corresponding to a selected application for installation at a host. A reverse firewall may use the profile of the host to determine whether to allow or block particular network communication from an application running on the host. An indication of a selected application may be received at the application provisioning device. Configuration information may also be received at the application provisioning device. The application provisioning server may request an update to the profile of a host and transmit such a request. The profile may be updated to reflect the configuration information and/or information of the selected application. Data corresponding to the selected application may be updated and transmitted to a host computer, where it may be installed. Therefore, the installed application running on the host may operate without being prematurely blocked by the reverse firewall.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: August 19, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: William A. Aiello, Charles Robert Kalmanek, Jr., William J. Leighton, III, Patrick McDaniel, Subhabrata Sen, Oliver Spatscheck, Jacobus E. Van Der Merwe
  • Patent number: 8811395
    Abstract: A system and method to use network flow records to generate information about changes in network routing and to understand the impact of these changes on network traffic. The inferences made can be determinative, if sufficient information is available. If sufficient information is not available to make determinative inferences, inferences may be made that narrow the range of possible changes that may have occurred to network traffic and the underlying network.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: August 19, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Alexandre Gerber, Lee Breslau, Subhabrata Sen, Nicholas Duffield, Carsten Lund, Cheng Ee, Amogh Dhamdhere
  • Publication number: 20140228040
    Abstract: Power and resource efficiency of a mobile network device are increased. In one aspect, a Tail Optimization Protocol (TOP) enables cooperation between a mobile device and an associated radio access network to eliminate idle periods (e.g., tails) when possible. Various systems and methods described herein can leverage the ability of applications and/or their associated connections to accurately predict a long tail time, from which a mobile device can notify an associated cellular network on such an imminent tail in order to allow the cellular network to immediately release tail resources. Various other aspects provided herein realize TOP via fast dormancy and/or other similar notification mechanisms, which enable a handset or other device to notify a cellular network for immediate resource release.
    Type: Application
    Filed: April 21, 2014
    Publication date: August 14, 2014
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Alexandre Gerber, Zhuoqing Mao, Feng Qian, Subhabrata Sen, Oliver Spatscheck, Zhaoguang Wang
  • Patent number: 8775352
    Abstract: Methods and apparatus to model end-to-end class of service policies in operational networks are disclosed. An example method to generate a class of service model is described, including electronically generating a ruleset based on the class of service configuration associated with a router, electronically generating a flat representation of the ruleset, electronically generating a class of service model by composing the flat representation into a composed ruleset, and storing the class of service model in a computer-readable memory.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: July 8, 2014
    Assignees: AT&T Intellectual Property I, L.P., Purdue Research Foundation
    Inventors: Subhabrata Sen, Carsten Lund, Sanjay Gopinatha Rao, Yu-Wei Sung
  • Patent number: 8750109
    Abstract: A packet trace is received. Inter-arrival times between the multiple packets in the packet trace are determined. An inter-arrival time in the inter-arrival times that is greater than a threshold is identified. An order number of the inter-arrival time is identified. A determination is made as to whether a size of each of at least a portion of the multiple packets is equal to a maximum segment size. When a determination is made that the size of each of at least a portion of the multiple packets is equal to the maximum segment size, a size of the ICW as a product of the order number and the maximum segment size is returned.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: June 10, 2014
    Assignees: AT&T Intellectual Property I, L.P., The Regents of the University of Michigan
    Inventors: Alexandre Gerber, Zhuoqing Mao, Feng Qian, Subhabrata Sen, Oliver Spatscheck, Walter Willinger
  • Patent number: 8744367
    Abstract: Systems and methods for increasing the power and resource efficiency of a mobile network device are presented herein. More particularly, described herein is a novel Tail Optimization Protocol (TOP) and/or other mechanisms, systems and methods for enabling cooperation between a mobile device and an associated radio access network to eliminate idle periods (e.g., tails) when possible. Various systems and methods described herein can leverage the ability of applications and/or their associated connections to accurately predict a long tail time, from which a mobile device can notify an associated cellular network on such an imminent tail in order to allow the cellular network to immediately release tail resources. Various other aspects provided herein realize TOP via fast dormancy and/or other similar notification mechanisms, which enable a handset or other device to notify a cellular network for immediate resource release.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: June 3, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Alexandre Gerber, Zhuoqing Mao, Feng Qian, Subhabrata Sen, Oliver Spatscheck, Zhaoguang Wang
  • Patent number: 8732293
    Abstract: The current invention relates to a system and method for tracking or locating a target entity on a data network, such as the public Internet, by analyzing network traffic and communication among interacting network nodes. The invention describes a system of creating an information set of data related to the traffic patterns associated with a specific entity over a time period, and comparing the information set to other information related to the traffic patterns associated with a group of entities over the same time period. By excluding information that is common to both the specific entity and the group of entities from the information set, the information set is left with only the information that helps identify the specific entity on the network.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: May 20, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Patrick McDaniel, Subhabrata Sen, Oliver Spatschek, Jacobus E. Van de Merwe