Patents by Inventor Radhika R. Roy

Radhika R. Roy 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: 10178543
    Abstract: A framework of a common mobility management protocol for Q.5/16 includes a high level protocol for performing the functions of address resolution, routing, location update and authentication. The common mobility management protocol can be used by existing and future multimedia applications (MA's) to support mobility management for messaging among mobility management authentication function (AuF), home location function (HLF) and visitor location function (VLF) databases/servers, and the corresponding multimedia application functional entities (MAFEs) of the multimedia applications (MA's). The common mobility management protocol may replace, act in concert with or in sequence with existent interworking protocols for the various multimedia applications. Reference point architectures, functional characteristics, features, and capabilities of the protocol are described including call flows and message syntax. The disclosure presents the scope of Q.5/16 and how H.MMS.1 (H.323 Mobility), H.MMS.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: January 8, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.
    Inventor: Radhika R. Roy
  • Patent number: 9420009
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: August 16, 2016
    Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Publication number: 20150016422
    Abstract: A framework of a common mobility management protocol for Q.5/16 includes a high level protocol for performing the functions of address resolution, routing, location update and authentication. The common mobility management protocol can be used by existing and future multimedia applications (MA's) to support mobility management for messaging among mobility management authentication function (AuF), home location function (HLF) and visitor location function (VLF) databases/servers, and the corresponding multimedia application functional entities (MAFEs) of the multimedia applications (MA's). The common mobility management protocol may replace, act in concert with or in sequence with existent interworking protocols for the various multimedia applications. Reference point architectures, functional characteristics, features, and capabilities of the protocol are described including call flows and message syntax. The disclosure presents the scope of Q.5/16 and how H.MMS.1 (H.323 Mobility), H.MMS.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Applicant: AT&T INTELLECTUAL PROPERTY II, L.P.
    Inventor: Radhika R. Roy
  • Patent number: 8848691
    Abstract: A framework of a common mobility management protocol for Q.5/16 includes a high level protocol for performing the functions of address resolution, routing, location update and authentication. The common mobility management protocol can be used by existing and future multimedia applications (MA's) to support mobility management for messaging among mobility management authentication function (AuF), home location function (HLF) and visitor location function (VLF) databases/servers, and the corresponding multimedia application functional entities (MAFEs) of the multimedia applications (MA's). The common mobility management protocol may replace, act in concert with or in sequence with existent interworking protocols for the various multimedia applications. Reference point architectures, functional characteristics, features, and capabilities of the protocol are described including call flows and message syntax. The disclosure presents the scope of Q.5/16 and how H.MMS.1 (H.323 Mobility), H.MMS.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: September 30, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Radhika R. Roy
  • Publication number: 20140226654
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Application
    Filed: April 15, 2014
    Publication date: August 14, 2014
    Applicant: AT&T Intellectual Property II, L.P.
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Patent number: 8705518
    Abstract: Method and apparatus for providing integrated network and operations control for a converged communications network providing all service types on a common architecture.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: April 22, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Siroos Afshar, Susan Roberta Bailey, Bisrat Bulcha, Marian Rogers Croak, Enrique G. Cuevas, Joubine Dustzadeh, Steve Fisher, Samuel Glazer, Burwell Goode, Barbara Joanne Kittredge, Karen McGregor-Barnes, John T. Mulligan, Magda K. Nassar, Radhika R. Roy, Larry Arnise Russell, Anand Singh
  • Patent number: 8699516
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: April 15, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Patent number: 8630299
    Abstract: A customer premises border element is disclosed that functions as an interface between devices, such as SIP devices located on a customer's premises, and a border element located in the service provider's network. Such customer premises border elements are advantageous in that they are relatively inexpensive since they only have to support devices located on the customer's premises. At the same time, by performing a number of functions, such as media transcoding and a portion of call processing, it reduces the processing requirements of network border elements.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: January 14, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Siroos K. Afshar, Gerald M. Ezrol, Stephen Fisher, Samuel Glazer, Radhika R. Roy
  • Patent number: 8625578
    Abstract: An access architecture for real-time communications is described. The architecture includes an inter-architecture network utilizing a single protocol, a plurality of border elements in communication with the inter-architecture network and with an external network, and one or more call control elements in communication with said inter-architecture network. The external network utilizes any of a variety of known networking technologies and protocols. The inter-architecture network utilizes a single protocol such as SIP. The present architecture provides a single common infrastructure for offering real-time communications services independent of call control protocols and networking technologies.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: January 7, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Radhika R. Roy, Siroos K. Afshar, Marian R. Croak, Enrique G. Cuevas, Alireza Faryar, Steve Fisher, Samuel Glazer, Barbara J. Kittredge, Karen A. McGregor-Barnes, Magda K. Nassar, Larry Arnise Russell
  • Patent number: 8184638
    Abstract: The present invention provides a method and system for assuring H.323 alias address portability to an H.323 user in real-time H.323 multimedia communications where the H.323 user is registered with a home gatekeeper for the home zone of the H.323 user. Alias address portability may be obtained using a central database that is known to the administrative zones and is used for alias address mapping, or alternatively, may be obtained by using a distributed database. The method may be implemented by: sending, by the H.323 user, a message with a called H.323 entity's alias address, to the home gatekeeper to originate a call to the called H.323 entity; confirming that the alias address, services, and service providers are portable; converting the alias address to a called routable alias address for the called H.323 entity and sending the alias address to the H.323 user; and placing the call to the called H.323 entity.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: May 22, 2012
    Assignee: AT&T Intellectual Property II, LP
    Inventor: Radhika R. Roy
  • Publication number: 20110191486
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 4, 2011
    Applicant: AT&T INTELLECTUAL PROPERTY II, L.P.
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Patent number: 7953111
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: May 31, 2011
    Assignee: AT&T Intellectual Property II, LP
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Patent number: 7940703
    Abstract: A technique for providing real-time multimedia conferencing services with guaranteed performance, in a hybrid networking environment, by interconnecting cable modem-based premises networks via hybrid fiber coaxial (HFC) access networks and an ATM wide area network is disclosed. The ATM wide area network may be divided into a plurality of access network domains and one backbone network domain to provide efficient and intelligent multimedia conferencing services. Each ATM access network domain has one cable modem server as well as access multimedia bridge server. There is only one central network server and one central multimedia bridge server within the backbone network domain. Each cable modem server located in an ATM access network domain maintains necessary information of how the cable network bandwidth is used by existing calls, and will be allocated when new multimedia conference calls are initiated, in accordance with desired priority and performance levels.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: May 10, 2011
    Assignee: AT&T Intellectual Property II, LP
    Inventor: Radhika R. Roy
  • Patent number: 7830861
    Abstract: In order to provide a single common cost-efficient architecture for real time communication services for audio, video, and data over internet protocol, a voice over internet protocol (VoIP) system and architecture is provided by placing border elements (BEs) at the interface boundaries between the access network the user devices use and the VoIP infrastructure. The BEs use SIP protocol as the access call control protocol over any access networking technologies, for example, IP, Ethernet, ATM, and FR, and provides all services transparently to the end users that use SIP-enabled devices. To enable a scalable system, the SIP BEs are decomposed into separate communicating entities that make the SIP BE scalable and provide new capabilities not previously available by a self-contained SIP BE.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: November 9, 2010
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Siroos K. Afshar, Cameron Scott Blandford, Alireza Faryar, Burwell Goode, Behzad Nadji, Radhika R. Roy
  • Patent number: 7797459
    Abstract: An access architecture for real-time communications is described. The architecture includes an inter-architecture network utilizing a single protocol, a plurality of border elements in communication with the inter-architecture network and with an external network, and one or more call control elements in communication with said inter-architecture network. The external network utilizes any of a variety of known networking technologies and protocols. The inter-architecture network utilizes a single protocol such as SIP. The present architecture provides a single common infrastructure for offering real-time communications services independent of call control protocols and networking technologies.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: September 14, 2010
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Radhika R. Roy, Siroos K. Afshar, Marian R. Croak, Enrique G. Cuevas, Alireza Faryar, Steve Fisher, Samuel Glazer, Barbara J. Kittredge, Karen A. McGregor-Barnes, Magda K. Nassar, Larry Arnise Russell
  • Patent number: 7715412
    Abstract: A decomposed H.323 border element is disclosed that is useful for providing an entry point from one or more H.323-based networks into a SIP-based VoIP network. In one embodiment, the signaling element of the BE is separated into a separate functional entity from the media control element to facilitate a single signaling entity controlling multiple media entities. In another embodiment, the security element of the border element is also separated from the media control element so that firewall and network address translation elements may be performed by a separate functional entity. In a further embodiment, the media transcoding element is separated from the media control element. In a final embodiment, the internetworking facility between the SIP and H.323 element is separate from the H.323 gatekeeper elements.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: May 11, 2010
    Assignee: AT&T Corp.
    Inventors: Siroos K. Afshar, Marian Rogers Croak, Radhika R. Roy, Ralph Utano
  • Publication number: 20100039964
    Abstract: A technique for providing real-time multimedia conferencing services with guaranteed performance, in a hybrid networking environment, by interconnecting cable modem-based premises networks via hybrid fiber coaxial (HFC) access networks and an ATM wide area network is disclosed. The ATM wide area network may be divided into a plurality of access network domains and one backbone network domain to provide efficient and intelligent multimedia conferencing services. Each ATM access network domain has one cable modem server as well as access multimedia bridge server. There is only one central network server and one central multimedia bridge server within the backbone network domain. Each cable modem server located in an ATM access network domain maintains necessary information of how the cable network bandwidth is used by existing calls, and will be allocated when new multimedia conference calls are initiated, in accordance with desired priority and performance levels.
    Type: Application
    Filed: October 26, 2009
    Publication date: February 18, 2010
    Inventor: Radhika R. Roy
  • Patent number: 7623475
    Abstract: A technique for providing real-time multimedia conferencing services with guaranteed performance, in a hybrid networking environment, by interconnecting cable modem-based premises networks via hybrid fiber coaxial (HFC) access networks and an ATM wide area network is disclosed. The ATM wide area network may be divided into a plurality of access network domains and one backbone network domain to provide efficient and intelligent multimedia conferencing services. Each ATM access network domain has one cable modem server as well as access multimedia bridge server. There is only one central network server and one central multimedia bridge server within the backbone network domain. Each cable modem server located in an ATM access network domain maintains necessary information of how the cable network bandwidth is used by existing calls, and will be allocated when new multimedia conference calls are initiated, in accordance with desired priority and performance levels.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: November 24, 2009
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Radhika R. Roy
  • Publication number: 20090232132
    Abstract: A framework of a common mobility management protocol for Q.5/16 includes a high level protocol for performing the functions of address resolution, routing, location update and authentication. The common mobility management protocol can be used by existing and future multimedia applications (MA's) to support mobility management for messaging among mobility management authentication function (AuF), home location function (HLF) and visitor location function (VLF) databases/servers, and the corresponding multimedia application functional entities (MAFEs) of the multimedia applications (MA's). The common mobility management protocol may replace, act in concert with or in sequence with existent interworking protocols for the various multimedia applications. Reference point architectures, functional characteristics, features, and capabilities of the protocol are described including call flows and message syntax. The disclosure presents the scope of Q.5/16 and how H.MMS.1 (H.323 Mobility), H.MMS.
    Type: Application
    Filed: May 29, 2009
    Publication date: September 17, 2009
    Applicant: AT&T Corp.
    Inventor: Radhika R. ROY
  • Patent number: RE42920
    Abstract: The present invention relates to a method and apparatus for inter-domain mobility management for a telephony network. The present invention also relates generally to the H.323 standard for transmitting audio and video data streams, and more particularly to extending the H.323 standard to support mobility in a multimedia communication system with services over packet-based networks.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: November 15, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventor: Radhika R. Roy