Patents by Inventor Sanja Durinovic-Johri
Sanja Durinovic-Johri 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: 10826818Abstract: Switches within a telecommunications network exchange so-called available bandwidth messages, each of which advertises how much bandwidth remains unassigned on a respective link. The network is of a type in which circuits are provisioned with various predefined numbers of time slots (equivalent to bandwidth). The sending of an available bandwidth message for a given link is triggered by a change in the number of time slots available on that link if that change results in a change in the number of circuit bandwidths that can be accommodated by that link for a newly provisioned circuit.Type: GrantFiled: February 2, 2018Date of Patent: November 3, 2020Assignee: AT&T Intellectual Property II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin Kumar Johri, John Paggi, Simon S. Zelingher
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Publication number: 20180159762Abstract: Switches within a telecommunications network exchange so-called available bandwidth messages, each of which advertises how much bandwidth remains unassigned on a respective link. The network is of a type in which circuits are provisioned with various predefined numbers of time slots (equivalent to bandwidth). The sending of an available bandwidth message for a given link is triggered by a change in the number of time slots available on that link if that change results in a change in the number of circuit bandwidths that can be accommodated by that link for a newly provisioned circuit.Type: ApplicationFiled: February 2, 2018Publication date: June 7, 2018Applicant: AT&T Intellectual Property II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin Kumar Johri, John Paggi, Simon S. Zelingher
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Patent number: 9900241Abstract: Switches within a telecommunications network exchange so-called available bandwidth messages, each of which advertises how much bandwidth remains unassigned on a respective link. The network is of a type in which circuits are provisioned with various predefined numbers of time slots (equivalent to bandwidth). The sending of an available bandwidth message for a given link is triggered by a change in the number of time slots available on that link if that change results in a change in the number of circuit bandwidths that can be accommodated by that link for a newly provisioned circuit.Type: GrantFiled: June 7, 2016Date of Patent: February 20, 2018Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin Kumar Johri, John Paggi, Simon S. Zelingher
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Publication number: 20160294674Abstract: Switches within a telecommunications network exchange so-called available bandwidth messages, each of which advertises how much bandwidth remains unassigned on a respective link. The network is of a type in which circuits are provisioned with various predefined numbers of time slots (equivalent to bandwidth). The sending of an available bandwidth message for a given link is triggered by a change in the number of time slots available on that link if that change results in a change in the number of circuit bandwidths that can be accommodated by that link for a newly provisioned circuit.Type: ApplicationFiled: June 7, 2016Publication date: October 6, 2016Applicant: AT&T Intellectual Property II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin Kumar Johri, John Paggi, Simon S. Zelingher
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Patent number: 9379961Abstract: Switches within a telecommunications network exchange so-called available bandwidth messages, each of which advertises how much bandwidth remains unassigned on a respective link. The network is of a type in which circuits are provisioned with various predefined numbers of time slots (equivalent to bandwidth). The sending of an available bandwidth message for a given link is triggered by a change in the number of time slots available on that link if that change results in a change in the number of circuit bandwidths that can be accommodated by that link for a newly provisioned circuit.Type: GrantFiled: December 10, 2009Date of Patent: June 28, 2016Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin Kumar Johri, John Paggi, Simon S. Zelingher
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Publication number: 20150124592Abstract: A system and method is disclosed that assures component circuits transported in aggregated circuits restore correctly after an aggregated circuit fault. The system and method implements component circuit tail segment integrity checks whenever an aggregated circuit is restored in a higher level of a network hierarchy. Switches at both ends of an aggregated circuit perform circuit integrity checks of the tail segments of every component circuit. A failure of the component circuit integrity check on any component circuit causes that component circuit to be released and restored end-to-end.Type: ApplicationFiled: April 29, 2013Publication date: May 7, 2015Inventors: Pravin Kumar Johri, Bruce Cortez, Sanja Durinovic-Johri
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Patent number: 9013984Abstract: A data network wherein network links have an assigned service weight and a restoration weight that are used as factors for respectively determining an optimum primary data path and a back-up data path through the network. The restoration path is used in the event of a failure of the primary service path and a Dijkstra or similar algorithm may be used for determining these paths. Service weights may be assigned to the links to prioritize finding the shortest possible path, whereas restoration weights may be assigned to the links to find a path with the maximum available capacity.Type: GrantFiled: October 17, 2006Date of Patent: April 21, 2015Assignee: AT&T Intellectual Property II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin Kumar Johri
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Patent number: 9007890Abstract: A system and method is disclosed that assures component circuits transported in aggregated circuits restore correctly after an aggregated circuit fault. The system and method implements component circuit tail segment integrity checks whenever an aggregated circuit is restored in a higher level of a network hierarchy. Switches at both ends of an aggregated circuit perform circuit integrity checks of the tail segments of every component circuit. A failure of the component circuit integrity check on any component circuit causes that component circuit to be released and restored end-to-end.Type: GrantFiled: April 29, 2013Date of Patent: April 14, 2015Assignee: AT&T Intellectual Property II, L.P.Inventors: Pravin Kumar Johri, Bruce Cortez, Sanja Durinovic-Johri
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Patent number: 8724511Abstract: A method and system for provisioning circuits on multiple parallel links with a single setup message is disclosed. A setup message specifying links in a circuit path is transmitted to switches along the circuit path. If a switch determines that a link specified in the setup message has insufficient bandwidth for the circuit, the switch substitutes a parallel link having sufficient bandwidth for the specified link in the circuit path. The setup message can indicate whether substitution for a link is permitted. This can be used to prevent substitution for links when provisioning service routes for new circuits in order to maintain diversity requirements, while allowing substitution for links when provisioning restoration routes for failed circuits in order to reduce restoration time.Type: GrantFiled: August 10, 2012Date of Patent: May 13, 2014Assignee: AT&T Intellectual Property II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin K. Johri
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Patent number: 8693318Abstract: Disclosed example operations involve provisioning a pool of communication capacity in a network link, the pool of communication capacity including spare capacity; allocating from the spare capacity a reserve service communication capacity requested in a connection setup message associated with a first user, the reserve service communication capacity being available to accommodate an increase of communications associated with a first service connection for the first user; and while the reserve service communication capacity is allocated for the first service connection for the first user, provisioning the reserve service communication capacity to be available for restoration capacity associated with a second service connection for at least a second user.Type: GrantFiled: September 14, 2012Date of Patent: April 8, 2014Assignee: AT&T Intellectual Property II, L.P.Inventors: Teddy Bezoza, Bruce Gilbert Cortez, Sanja Durinovic-Johri, Karel Ehrlich, Pravin Kumar Johri
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Publication number: 20130250756Abstract: A system and method is disclosed that assures component circuits transported in aggregated circuits restore correctly after an aggregated circuit fault. The system and method implements component circuit tail segment integrity checks whenever an aggregated circuit is restored in a higher level of a network hierarchy. Switches at both ends of an aggregated circuit perform circuit integrity checks of the tail segments of every component circuit. A failure of the component circuit integrity check on any component circuit causes that component circuit to be released and restored end-to-end.Type: ApplicationFiled: April 29, 2013Publication date: September 26, 2013Inventors: Pravin Kumar Johri, Bruce Cortez, Sanja Durinovic-Johri
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Patent number: 8531970Abstract: The present invention relates generally to restoration of services in a network. More particularly, the invention encompasses a scheme for randomized selection of equal cost links during restoration in a communication network. The invention further includes multiple schemes for restoring services. The network could consist of optical, ATM, FR, or IP/MPLS switches and cross-connects.Type: GrantFiled: May 12, 2011Date of Patent: September 10, 2013Assignee: AT&T Intellectual Property II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin Kumar Johri, John Paggi, Simon S Zelingher
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Patent number: 8451712Abstract: A system and method is disclosed that assures component circuits transported in aggregated circuits restore correctly after an aggregated circuit fault. The system and method implements component circuit tail segment integrity checks whenever an aggregated circuit is restored in a higher level of a network hierarchy. Switches at both ends of an aggregated circuit perform circuit integrity checks of the tail segments of every component circuit. A failure of the component circuit integrity check on any component circuit causes that component circuit to be released and restored end-to-end.Type: GrantFiled: September 21, 2010Date of Patent: May 28, 2013Assignee: AT&T Intellectual Property II, L.P.Inventors: Pravin Kumar Johri, Bruce Cortez, Sanja Durinovic-Johri
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Publication number: 20130010807Abstract: Disclosed example operations involve provisioning a pool of communication capacity in a network link, the pool of communication capacity including spare capacity; allocating from the spare capacity a reserve service communication capacity requested in a connection setup message associated with a first user, the reserve service communication capacity being available to accommodate an increase of communications associated with a first service connection for the first user; and while the reserve service communication capacity is allocated for the first service connection for the first user, provisioning the reserve service communication capacity to be available for restoration capacity associated with a second service connection for at least a second user.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Inventors: Teddy Bezoza, Bruce Gilbert Cortez, Sanja Durinovic-Johri, Karel Ehrlich, Pravin Kumar Johri
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Publication number: 20120300672Abstract: A method and system for provisioning circuits on multiple parallel links with a single setup message is disclosed. A setup message specifying links in a circuit path is transmitted to switches along the circuit path. If a switch determines that a link specified in the setup message has insufficient bandwidth for the circuit, the switch substitutes a parallel link having sufficient bandwidth for the specified link in the circuit path. The setup message can indicate whether substitution for a link is permitted. This can be used to prevent substitution for links when provisioning service routes for new circuits in order to maintain diversity requirements, while allowing substitution for links when provisioning restoration routes for failed circuits in order to reduce restoration time.Type: ApplicationFiled: August 10, 2012Publication date: November 29, 2012Applicant: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin K. Johri
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Patent number: 8274883Abstract: A method and a system for allocating restoration capacity in a network link in a communications network provides that a common pool of communication capacity is provisioned in a network link, such that the common pool of communication capacity includes spare capacity for new service and restoration capacity. A pool of pre-allocated communication capacity for future growth of at least one connection in the network link is also provisioned. The pool of pre-allocated communication capacity for future growth is available for restoration capacity, but not for spare capacity for new service. The communications network can be, for example, a private line (PL) network, a SONET-based network, an Asynchronous Transfer Mode (ATM)-based network, an Internet Protocol/MultiProtocol Label Switching (IP/MPLS)-based network or a frame relay (FR)-based network.Type: GrantFiled: June 22, 2009Date of Patent: September 25, 2012Assignee: AT&T Intellectual Property II, L.P.Inventors: Teddy Bezoza, Bruce Gilbert Cortez, Sanja Durinovic-Johri, Karel Ehrlich, Pravin Kumar Johri
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Patent number: 8264983Abstract: A method and system for provisioning circuits on multiple parallel links with a single setup message is disclosed. A setup message specifying links in a circuit path is transmitted to switches along the circuit path. If a switch determines that a link specified in the setup message has insufficient bandwidth for the circuit, the switch substitutes a parallel link having sufficient bandwidth for the specified link in the circuit path. The setup message can indicate whether substitution for a link is permitted. This can be used to prevent substitution for links when provisioning service routes for new circuits in order to maintain diversity requirements, while allowing substitution for links when provisioning restoration routes for failed circuits in order to reduce restoration time.Type: GrantFiled: October 22, 2009Date of Patent: September 11, 2012Assignee: AT&T Intellectual Property II, L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin K. Johri
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Publication number: 20110216654Abstract: The present invention relates generally to restoration of services in a network. More particularly, the invention encompasses a scheme for randomized selection of equal cost links during restoration in a communication network. The invention further includes multiple schemes for restoring services. The network could consist of optical, ATM, FR, or IP/MPLS switches and cross-connects.Type: ApplicationFiled: May 12, 2011Publication date: September 8, 2011Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin Kumar Johri, John Paggi, Simon S. Zelingher
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Patent number: 7990945Abstract: Disclosed is a method and apparatus for provisioning a label switched path (LSP) between two endpoints executing a first set of MPLS functions. The method and apparatus associates a first node with the first endpoint and a second node with the second endpoint. The first node is designated as the source. Both the first and second nodes execute a second set of MPLS functions, wherein the second set of MPLS functions include the first set of MPLS functions and additional MPLS functions. As the source, the first node provisions a first MPLS path (i.e., LSP) between itself and the first endpoint. The first node then provisions a second MPLS path (i.e., LSP) between the first node and the second node. The first node then transmits a message to the second node instructing the second node to provision a third MPLS path between the second node and the second endpoint. The three MPLS paths are bridged at the first and second nodes to complete the LSP between the two endpoints.Type: GrantFiled: September 14, 2005Date of Patent: August 2, 2011Assignee: AT&T Intellectual Property II, L.P.Inventors: Pravin K. Johri, Sanja Durinovic-Johri
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Patent number: 7986631Abstract: The present invention relates generally to restoration of services in a network. More particularly, the invention encompasses a scheme for randomized selection of equal cost links during restoration in a communication network. The invention further includes multiple schemes for restoring services. The network could consist of optical, ATM, FR, or IP/MPLS switches and cross-connects.Type: GrantFiled: May 19, 2008Date of Patent: July 26, 2011Assignee: AT&T Intellectual Property II L.P.Inventors: Bruce Gilbert Cortez, Sanja Durinovic-Johri, Pravin Kumar Johri, John Paggi, Simon S Zelingher