Patents by Inventor Kadangode K. Ramakrishnan
Kadangode K. Ramakrishnan 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).
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Patent number: 10979205Abstract: Disclosed herein are systems, methods, and computer-readable storage devices for reducing inter-cellsite interference during full-duplex communication. A system receives a channel amplitude and a phase estimate between a first station and a second station, the first station and the second station creating inter-cellsite interference on a channel during full-duplex communications. The system calculates a level of the inter-cellsite interference between the first station and the second station based on the channel amplitude and the phase estimate and generates a cancellation signal based on the inter-cellsite interference. The system then communicates the cancellation signal to the first station for transmission with additional data during additional full-duplex communications.Type: GrantFiled: February 9, 2020Date of Patent: April 13, 2021Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Rittwik Jana, Vaneet Aggarwal, Lusheng Ji, Rajesh Krishna Panta, Kadangode K. Ramakrishnan, Christopher W. Rice, Nemmara K. Shankaranarayanan, Vinay Anant Vaishampayan
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Publication number: 20200177354Abstract: Disclosed herein are systems, methods, and computer-readable storage devices for reducing inter-cellsite interference during full-duplex communication. A system receives a channel amplitude and a phase estimate between a first station and a second station, the first station and the second station creating inter-cellsite interference on a channel during full-duplex communications. The system calculates a level of the inter-cellsite interference between the first station and the second station based on the channel amplitude and the phase estimate and generates a cancellation signal based on the inter-cellsite interference. The system then communicates the cancellation signal to the first station for transmission with additional data during additional full-duplex communications.Type: ApplicationFiled: February 9, 2020Publication date: June 4, 2020Inventors: Rittwik JANA, Vaneet AGGARWAL, Lusheng JI, Rajesh Krishna PANTA, Kadangode K. RAMAKRISHNAN, Christopher W. RICE, Nemmara K. SHANKARANARAYANAN, Vinay Anant VAISHAMPAYAN
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Patent number: 10601731Abstract: Aspects of the subject disclosure may include, for example, a broadcast services platform includes a memory that stores operational instructions. A processor executes the operational instructions to: receive user data, the user data including a list of users and performance metric data corresponding to individual ones of the users; sort the list of the users in order of the performance metric data to generate a sorted list of the users; partition the sorted list of the users to generate a plurality of user groups; and generate network resource allocation data that allocates network resources to provide broadcast services to the users. Other embodiments are disclosed.Type: GrantFiled: August 30, 2019Date of Patent: March 24, 2020Assignee: AT&T Intellectual Property I, L.P.Inventors: Rakesh Sinha, Jeffrey Erman, Guangzhi Li, Jiasi Chen, Kadangode K. Ramakrishnan
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Patent number: 10560244Abstract: Disclosed herein are systems, methods, and computer-readable storage devices for reducing inter-cellsite interference during full-duplex communication. A system receives a channel amplitude and a phase estimate between a first station and a second station, the first station and the second station creating inter-cellsite interference on a channel during full-duplex communications. The system calculates a level of the inter-cellsite interference between the first station and the second station based on the channel amplitude and the phase estimate and generates a cancellation signal based on the inter-cellsite interference. The system then communicates the cancellation signal to the first station for transmission with additional data during additional full-duplex communications.Type: GrantFiled: July 24, 2013Date of Patent: February 11, 2020Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Rittwik Jana, Vaneet Aggarwal, Lusheng Ji, Rajesh Krishna Panta, Kadangode K. Ramakrishnan, Christopher W. Rice, Nemmara K. Shankaranarayanan, Vinay Anant Vaishampayan
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Publication number: 20190386931Abstract: Aspects of the subject disclosure may include, for example, a broadcast services platform includes a memory that stores operational instructions. A processor executes the operational instructions to: receive user data, the user data including a list of users and performance metric data corresponding to individual ones of the users; sort the list of the users in order of the performance metric data to generate a sorted list of the users; partition the sorted list of the users to generate a plurality of user groups; and generate network resource allocation data that allocates network resources to provide broadcast services to the users. Other embodiments are disclosed.Type: ApplicationFiled: August 30, 2019Publication date: December 19, 2019Applicant: AT&T Intellectual Property I, L.P.Inventors: Rakesh Sinha, Jeffrey Erman, Guangzhi Liu, Jiasi Chen, Kadangode K. Ramakrishnan
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Patent number: 10511893Abstract: A method includes receiving at a directory server a notification from a client system, where the notification indicates that the first client received a corrupt packet of a playfile from a first peer. The method also includes determining if the first peer is a poor quality peer, updating a first peer score for the first peer if the first peer is not a poor quality peer, identifying a second peer that is not on a blacklist, and providing a peer identification associated with the second peer to the client system.Type: GrantFiled: March 16, 2017Date of Patent: December 17, 2019Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Kadangode K. Ramakrishnan, Vijay Gopalakrishnan, Fang Yu
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Patent number: 10447616Abstract: Aspects of the subject disclosure may include, for example, a broadcast services platform includes a memory that stores operational instructions. A processor executes the operational instructions to: receive user data, the user data including a list of users and performance metric data corresponding to individual ones of the users; sort the list of the users in order of the performance metric data to generate a sorted list of the users; partition the sorted list of the users to generate a plurality of user groups; and generate network resource allocation data that allocates network resources to provide broadcast services to the users. Other embodiments are disclosed.Type: GrantFiled: April 24, 2015Date of Patent: October 15, 2019Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Rakesh Sinha, Jeffrey Erman, Guangzhi Li, Jiasi Chen, Kadangode K. Ramakrishnan
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Patent number: 10397825Abstract: Explicit congestion notification (ECN) data that is utilized in a core portion of a cellular communication network has known issues associated with a first use scenario and an infrequent use scenario. A probe comprising probe data and a data structure for storing certain ECN data can be transmitted in order to mitigate these issues. Transmitting the probe in response to a communication session being established with a device of a network can mitigate the first use issue. Transmitting the probe in response to expiration of a probe timer in connection with a network traffic idle period can mitigate the infrequent use scenario.Type: GrantFiled: January 22, 2018Date of Patent: August 27, 2019Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Zhi Cui, Kadangode K. Ramakrishnan, Robert C. Streijl
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Patent number: 10311367Abstract: Recommendation systems are widely used in Internet applications. In current recommendation systems, users only play a passive role and have limited control over the recommendation generation process. As a result, there is often considerable mismatch between the recommendations made by these systems and the actual user interests, which are fine-grained and constantly evolving. With a user-powered distributed recommendation architecture, individual users can flexibly define fine-grained communities of interest in a declarative fashion and obtain recommendations accurately tailored to their interests by aggregating opinions of users in such communities. By combining a progressive sampling technique with data perturbation methods, the recommendation system is both scalable and privacy-preserving.Type: GrantFiled: January 6, 2016Date of Patent: June 4, 2019Assignees: AT&T Intellectual Property I, L.P., Board of Regents, The University of Texas SystemInventors: Kadangode K. Ramakrishnan, Divesh Srivastava, Tae Won Cho, Yin Zhang
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Patent number: 10237414Abstract: Network resources for a call are allocated. The network resources for the call are reserved based on a reservation. The network resources are reserved before any one network resource is committed. If the call is confirmed, then the network resources are committed.Type: GrantFiled: March 2, 2018Date of Patent: March 19, 2019Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Douglas M. Nortz, Kadangode K. Ramakrishnan, Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra
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Patent number: 10152398Abstract: Pipelined data replication for disaster recovery is disclosed. An example pipelined data replication method for disaster recovery disclosed herein comprises sending replicated first data from a primary processing environment to a secondary processing environment for backup by the secondary processing environment, the replicated first data being a replica of first data in the primary processing environment, processing the first data in the primary processing environment prior to the backup of the replicated first data by the secondary processing environment being confirmed, and preventing a result of the processing of the first data from being released by the primary processing environment until the backup of the replicated first data by the secondary processing environment is confirmed.Type: GrantFiled: August 2, 2012Date of Patent: December 11, 2018Assignees: AT&T Intellectual Property I, L.P., University of MassachusettsInventors: Kadangode K. Ramakrishnan, Horacio Andres Lagar-Cavilla, Prashant Shenoy, Jacobus Van der Merwe, Timothy Wood
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Publication number: 20180191910Abstract: Network resources for a call are allocated. The network resources for the call are reserved based on a reservation. The network resources are reserved before any one network resource is committed. If the call is confirmed, then the network resources are committed.Type: ApplicationFiled: March 2, 2018Publication date: July 5, 2018Applicant: AT&T Intellectual Property II, L.P.Inventors: Douglas M. Nortz, Kadangode K. Ramakrishnan, Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra
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Publication number: 20180146396Abstract: Explicit congestion notification (ECN) data that is utilized in a core portion of a cellular communication network has known issues associated with a first use scenario and an infrequent use scenario. A probe comprising probe data and a data structure for storing certain ECN data can be transmitted in order to mitigate these issues. Transmitting the probe in response to a communication session being established with a device of a network can mitigate the first use issue. Transmitting the probe in response to expiration of a probe timer in connection with a network traffic idle period can mitigate the infrequent use scenario.Type: ApplicationFiled: January 22, 2018Publication date: May 24, 2018Inventors: Zhi Cui, Kadangode K. Ramakrishnan, Robert C. Streijl
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Patent number: 9942411Abstract: Network resources for a call are allocated. The network resources for the call are reserved based on a reservation. The network resources are reserved before any one network resource is committed. If the call is confirmed, then the network resources are committed.Type: GrantFiled: August 4, 2017Date of Patent: April 10, 2018Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Douglas M. Nortz, Kadangode K. Ramakrishnan, Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra
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Patent number: 9936418Abstract: Explicit congestion notification (ECN) data that is utilized in a core portion of a cellular communication network has known issues associated with a first use scenario and an infrequent use scenario. A probe comprising probe data and a data structure for storing certain ECN data can be transmitted in order to mitigate these issues. Transmitting the probe in response to a communication session being established with a device of a network can mitigate the first use issue. Transmitting the probe in response to expiration of a probe timer in connection with a network traffic idle period can mitigate the infrequent use scenario.Type: GrantFiled: August 20, 2015Date of Patent: April 3, 2018Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Zhi Cui, Kadangode K. Ramakrishnan, Robert C. Streijl
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Patent number: 9893994Abstract: Disclosed example routing methods include accessing a control packet originating from a first internal router, translating the destination address of the control packet from a first value to a second value, and identifying a first one of a plurality of outgoing interfaces of a meta-router based on the second value of the destination address, the outgoing interfaces of the meta-router in communication with respective incoming interfaces of a splitter. Disclosed example methods also include forwarding the control packet to the first one of the outgoing interfaces of the meta-router after translating the destination address of the control packet from the second value back to the first value, and routing the control packet from the splitter to an external router based on which one of the incoming interfaces of the splitter receives the control packet from the meta-router.Type: GrantFiled: November 7, 2016Date of Patent: February 13, 2018Assignee: AT&T Intellectual Property I, L.P.Inventors: Cheng Ee, Lee Breslau, Kadangode K. Ramakrishnan
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Publication number: 20170359468Abstract: Network resources for a call are allocated. The network resources for the call are reserved based on a reservation. The network resources are reserved before any one network resource is committed. If the call is confirmed, then the network resources are committed.Type: ApplicationFiled: August 4, 2017Publication date: December 14, 2017Applicant: AT&T Intellectual Property II, L.P.Inventors: Douglas M. Nortz, Kadangode K. Ramakrishnan, Charles Robert Kalmanek, JR., William Todd Marshall, Partho Pratim Mishra
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Patent number: 9800624Abstract: A content monitor includes a processor that at least receives requests from a plurality of clients for content, instructs each client to retry their respective request at a first later time if the request is received before a first time, counts the requests to determine if a number of the requests exceeds a threshold if the request is received before a second time, instructs each client to retry their respective request at a second later time if the counted number of requests does not exceed a first threshold, instructs each client to join a multicast group to receive the content when the number of requests exceeds the first threshold, and counts a number of late clients joining the multicast group after a first portion of the content has been sent to the multicast group.Type: GrantFiled: July 28, 2016Date of Patent: October 24, 2017Assignee: AT&T Intellectual Property I, L.P.Inventors: Alan L. Glasser, Andrew G. Gauld, Vijay Gopalakrishnan, John F. Lucas, Kadangode K. Ramakrishnan
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Patent number: 9762739Abstract: Network resources for a call are allocated. The network resources for the call are reserved based on a reservation. The network resources are reserved before any one network resource is committed. If the call is confirmed, then the network resources are committed.Type: GrantFiled: February 12, 2016Date of Patent: September 12, 2017Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Douglas M. Nortz, Kadangode K. Ramakrishnan, Charles Robert Kalmanek, Jr., William Todd Marshall, Partho Pratim Mishra
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Patent number: 9736730Abstract: Wireless video download rates are optimized by receiving, at a system with a computer that includes a processor and memory, a request to provide a piece of video content over a wireless network. The processor of the computer is used to determine whether to provide the video content at a first option that is as soon as possible or at a second option over a specified interval T. The interval T is calculated as a time for a destination device to download the video content at a rate level higher than encoding for the video content requires. Upon determining to provide the video content over the interval T, the video content is provided over the wireless network over the interval T to a client device that requested the piece of video content.Type: GrantFiled: November 5, 2015Date of Patent: August 15, 2017Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Emir Halepovic, Kadangode K Ramakrishnan, Jeffrey Erman