Patents by Inventor Karthik Ramakrishnan

Karthik 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).

  • Patent number: 7792086
    Abstract: The method for implementing an Intelligent Content Rating middleware platform and gateway system provides telecommunications carriers and network operators with the ability to define routing and actions based on HTTP/SIP based content and subscriber context through a powerful, extensible Layer 4-7 switching fabric technology. The disclosed embodiments mediate communications between applications and networks for IP packet flows, personal messaging, location-based services, and billing. Furthermore, the disclosed embodiments enable advanced context-sensitive dialogue scenarios with the wireless subscriber such as, but not limited to, Advice-of-Charge dialogues. The disclosed embodiments permit telecommunications network operators and like entities to introduce real-time rating of data services for both prepaid and postpaid subscribers. Further embodiments include the validation of digital signatures, combined with authentication and non-repudiation techniques to ensure subscriber privacy remains protected.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: September 7, 2010
    Assignee: Redknee Inc.
    Inventors: Jeff Popoff, Victor Leung, Karthik Ramakrishnan
  • Publication number: 20100067537
    Abstract: A method for Internet Protocol (IP) charging and rating gateway within a system having: (i) a proxy server for connection to an Authentication, Authorization, and Accounting (AAA) server; (ii) an access gateway, (iii) an IP classification engine for connection between a data network and the access gateway; and (iv) a gateway controller connected to the proxy server and the IP classification engine, including the steps of: (a) receiving IP packets at the IP classification engine, the IP packets originating from the data network and destined for a subscriber device via the access gateway; (b) classifying the IP packets according to the protocol of each of the packets at the IP classification engine; and (c) selectively instructing the IP classification engine to permit or deny the flow of IP packets between the data network and the access gateway at the gateway controller. Preferably, the proxy server is configured to emulate the access gateway and the AAA server.
    Type: Application
    Filed: November 23, 2009
    Publication date: March 18, 2010
    Applicant: Redknee Inc.
    Inventors: KARTHIK RAMAKRISHNAN, Ian Gordon Collett, Rubens Rahim
  • Patent number: 7644158
    Abstract: A method for Internet Protocol (IP) charging and rating gateway within a system having a proxy server for connection to an Authentication, Authorization, and Accounting (AAA) server, an access gateway, an IP classification engine for connection between a data network and the access gateway and a gateway controller connected to the proxy server and the IP classification engine, including the steps of receiving IP packets at the IP classification engine, the IP packets originating from the data network and destined for a subscriber device via the access gateway, classifying the IP packets according to the protocol of each of the packets at the IP classification engine and selectively instructing the IP classification engine to permit or deny the flow of IP packets between the data network and the access gateway at the gateway controller. Preferably, the proxy server is configured to emulate the access gateway and the AAA server.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: January 5, 2010
    Assignee: Redknee Inc.
    Inventors: Karthik Ramakrishnan, Ian Gordon Collett, Rubens Rahim
  • Publication number: 20090168697
    Abstract: Disclosed is a species of control-message intercept method which includes a passive monitoring approach whereby the relevant control packets are inspected for the purpose of providing additional information for the purpose of facilitating the operation of some primary or ‘master’ Internet Protocol (IP) charging/rating middleware platform/gateway system (intended to equip network operators with the ability to rate and bill IP traffic), and secondly, an invasive technique whereby control (GTP-C) messages are injected for the purpose of altering the state of a given data session in an more aggressive fashion (e.g. to drop a data session when the subscriber runs out of money in his/her prepaid account).
    Type: Application
    Filed: September 6, 2005
    Publication date: July 2, 2009
    Applicant: Redknee Inc
    Inventors: Bohdan Zabawskyj, Rubens Rahim, Karthik Ramakrishnan
  • Publication number: 20090133114
    Abstract: A method for Internet Protocol (IP) charging and rating gateway within a system having: (i) a proxy server for connection to an Authentication, Authorization, and Accounting (AAA) server; (ii) an access gateway, (iii) an IP classification engine for connection between a data network and the access gateway; and (iv) a gateway controller connected to the proxy server and the IP classification engine, including the steps of: (a) receiving IP packets at the IP classification engine, the IP packets originating from the data network and destined for a subscriber device via the access gateway; (b) classifying the IP packets according to the protocol of each of the packets at the IP classification engine; and (c) selectively instructing the IP classification engine to permit or deny the flow of IP packets between the data network and the access gateway at the gateway controller. Preferably, the proxy server is configured to emulate the access gateway and the AAA server.
    Type: Application
    Filed: November 3, 2008
    Publication date: May 21, 2009
    Applicant: Redknee Inc.
    Inventors: Karthik Ramakrishnan, Ian Gordon Collett, Rubens Rahim
  • Patent number: 7457865
    Abstract: A method and a system for enabling a telecommunication network operators to transparently intermediate P data flow, by providing a highly scalable, and superior data classification method for implementing policy based filtering, forwarding, accounting and/or monitoring of informational packets of interest; and indeed, is intended to exploit the resiliency of open network architecture and lessen the requisite dependency on proprietary network elements services and other such systems.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: November 25, 2008
    Assignee: Redknee Inc.
    Inventors: Karthik Ramakrishnan, Ian Gordon Collett, Rubens Rahim
  • Publication number: 20080059653
    Abstract: A system and method for active profile services is provided. An embodiment includes an active profile server that is configured to respond to requests for subscriber profile information from an application server. The profile server is further configured to access a known set of profile information for a subscriber and, according to predefined criteria, automatically modify the known set of subscriber profile information and provide the modified profile information to the application server.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 6, 2008
    Inventors: Bohdan Konstantyn Zabawskyi, Karthik Ramakrishnan, Rushabhdev Gudka, Kar Wai Wong, Philip Renwell Steele
  • Publication number: 20050135264
    Abstract: The method for implementing an Intelligent Content Rating middleware platform and gateway system disclosed herewith provides telecommunications carriers and network operators with the ability to define routing and actions based on HTTP/SIP based content and subscriber context through a powerful, extensible Layer 4-7 switching fabric technology. The invention mediates communications between applications and networks for IP packet flows, personal messaging, location-based services and billing. Furthermore, it enables advanced context-sensitive dialogue scenarios with the wireless subscriber such as, but not limited to, Advice-of-Charge dialogues. The art permits telecommunications network operators and like entities to introduce real-time rating of data services for both prepaid and post-paid subscribers. Further advances in the art include the validation of digital signatures, combined with authentication and non-repudiation techniques to ensure subscriber privacy remains protected.
    Type: Application
    Filed: December 23, 2003
    Publication date: June 23, 2005
    Inventors: Jeff Popoff, Victor Leung, Karthik Ramakrishnan
  • Publication number: 20040148384
    Abstract: The art of present discloses a method and system for enabling telecommunications network operators to transparently intermediate IP data flow, by providing a highly scalable, and superior data classification method for implementing policy based filtering, forwarding, accounting and/or monitoring of informational packets of interest; and indeed, is intended to exploit the resiliency of open network architecture and lessen the requisite dependency on proprietary network elements services and other such systems.
    Type: Application
    Filed: January 23, 2003
    Publication date: July 29, 2004
    Inventors: Karthik Ramakrishnan, Ian Gordon Collett, Rubens Rahim