Patents by Inventor Sanjay Cherian
Sanjay Cherian 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: 9019935Abstract: In connection with a mobile wireless subnetwork having multiple radio network controllers and multiple radio nodes, a session established for an access terminal is associated with a serving radio network controller. The association is maintained as the access terminal moves from the coverage area of one radio node to the coverage area of another radio node within the same subnetwork. Access channel packets are routed from an access terminal having an existing session to the serving radio network controller by determining the IP address of the serving radio network controller using a session identifier.Type: GrantFiled: March 26, 2012Date of Patent: April 28, 2015Assignee: Ericsson EVDO Inc.Inventors: M. Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
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Patent number: 8615238Abstract: In a radio access network, multiple radio network controllers are connected to several radio nodes using a network. The interconnected radio network controllers and radio nodes are addressable, and, therefore, each radio network controller can communicate directly with each radio node and visa versa. The radio access network can be configured to avoid active handoffs between radio network controllers by maintaining a traffic channel set up between an access terminal and a radio network controller even as the flow.Type: GrantFiled: August 16, 2010Date of Patent: December 24, 2013Assignee: Ericsson EVDO Inc.Inventors: Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
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Publication number: 20120243476Abstract: In connection with a mobile wireless subnetwork having multiple radio network controllers and multiple radio nodes, a session established for an access terminal is associated with a serving radio network controller. The association is maintained as the access terminal moves from the coverage area of one radio node to the coverage area of another radio node within the same subnetwork. Access channel packets are routed from an access terminal having an existing session to the serving radio network controller by determining the IP address of the serving radio network controller using a session identifier.Type: ApplicationFiled: March 26, 2012Publication date: September 27, 2012Inventors: M. Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
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Patent number: 8195187Abstract: In a radio access network, multiple radio network controllers are connected to several radio nodes using a network. The interconnected radio network controllers and radio nodes are addressable, and, therefore, each radio network controller can communicate directly with each radio node and visa versa. The radio access network can be configured to avoid active handoffs between radio network controllers by maintaining a traffic channel set up between an access terminal and a radio network controller even as the flow.Type: GrantFiled: January 18, 2005Date of Patent: June 5, 2012Assignee: Airvana Network Solutions, Inc.Inventors: Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
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Patent number: 8160020Abstract: In connection with a mobile wireless subnetwork having multiple radio network controllers and multiple radio nodes, a session established for an access terminal is associated with a serving radio network controller. The association is maintained as the access terminal moves from the coverage area of one radio node to the coverage area of another radio node within the same subnetwork. Access channel packets are routed from an access terminal having an existing session to the serving radio network controller by determining the IP address of the serving radio network controller using a session identifier.Type: GrantFiled: June 25, 2001Date of Patent: April 17, 2012Assignee: Airvana Network Solutions, Inc.Inventors: M. Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
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Patent number: 8099504Abstract: A radio network controller and methods for reestablishing sessions in a wireless network are described. At least a portion of session information associated with a first session is saved; and in response to detecting an unexpected degradation of the first session, reestablishment of the first session is triggered using the portion of the session information.Type: GrantFiled: June 24, 2005Date of Patent: January 17, 2012Assignee: Airvana Network Solutions, Inc.Inventors: Sanjay Cherian, Dennis Ng, Arthur J. Barabell, Suresh Ramaswamy, Deepak Garg
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Patent number: 7934001Abstract: Techniques for network-initiated session recovery are described. A relationship is maintained between two identifiers both associated with a session between a first device and an access terminal in a wireless network. The first identifier is associated with the first device, and the second identifier is associated with a second device in communication with the first device. After a breach of the session, communications associated with the session are preserved based on the relationship between the first and second identifiers.Type: GrantFiled: April 22, 2010Date of Patent: April 26, 2011Assignee: Airvana Network Solutions, Inc.Inventors: Gopal Harikumar, Woojune Kim, Dennis Ng, Sanjay Cherian
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Patent number: 7900249Abstract: A system, method and apparatus for securing communications between a trusted network and an untrusted network are disclosed. A perimeter client is deployed within the trusted network and communicates over a session multiplexing enabled protocol with a perimeter server deployed within a demilitarized zone network. The perimeter client presents requests to make available and communication initiation requests to the perimeter server which presents corresponding sockets to the entrusted network. The session multiplexing capabilities of the protocol used between the perimeter server and perimeter client permit a single communication session therebetween to support a plurality of communication sessions between the perimeter server and untrusted network. In the event data flows across the communication sessions are encrypted, decryption of the data flows is left to the components at the end points of the communication session, thereby restricting exposure of privileged information to areas within trusted networks.Type: GrantFiled: October 23, 2008Date of Patent: March 1, 2011Assignee: Sterling Commerce, Inc.Inventors: Bill Burcham, Sanjay Cherian, Darron Shaffer
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Publication number: 20110032824Abstract: In a radio access network, multiple radio network controllers are connected to several radio nodes using a network. The interconnected radio network controllers and radio nodes are addressable, and, therefore, each radio network controller can communicate directly with each radio node and visa versa. The radio access network can be configured to avoid active handoffs between radio network controllers by maintaining a traffic channel set up between an access terminal and a radio network controller even as the flow.Type: ApplicationFiled: August 16, 2010Publication date: February 10, 2011Inventors: Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
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Patent number: 7853263Abstract: In a radio access network, multiple radio network controllers are connected to several radio nodes using a network. The interconnected radio network controllers and radio nodes are addressable, and, therefore, each radio network controller can communicate directly with each radio node and visa versa. The radio access network can be configured to avoid active handoffs between radio network controllers by maintaining a traffic channel set up between an access terminal and a radio network controller even as the flow.Type: GrantFiled: January 18, 2005Date of Patent: December 14, 2010Assignee: Airvana, Inc.Inventors: Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
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Publication number: 20100202362Abstract: Techniques for network-initiated session recovery are described. A relationship is maintained between two identifiers both associated with a session between a first device and an access terminal in a wireless network. The first identifier is associated with the first device, and the second identifier is associated with a second device in communication with the first device. After a breach of the session, communications associated with the session are preserved based on the relationship between the first and second identifiers.Type: ApplicationFiled: April 22, 2010Publication date: August 12, 2010Inventors: Gopal Harikumar, Woojune Kim, Dennis Ng, Sanjay Cherian
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Patent number: 7730189Abstract: Techniques for network-initiated session recovery are described. A relationship is maintained between two identifiers both associated with a session between a first device and an access terminal in a wireless network. The first identifier is associated with the first device, and the second identifier is associated with a second device in communication with the first device. After a breach of the session, communications associated with the session are preserved based on the relationship between the first and second identifiers.Type: GrantFiled: November 22, 2006Date of Patent: June 1, 2010Assignee: Airvana, Inc.Inventors: Gopal Harikumar, Woojune Kim, Dennis Ng, Sanjay Cherian
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Publication number: 20090044262Abstract: A system, method and apparatus for securing communications between a trusted network and an untrusted network are disclosed. A perimeter client is deployed within the trusted network and communicates over a session multiplexing enabled protocol with a perimeter server deployed within a demilitarized zone network. The perimeter client presents requests to make available and communication initiation requests to the perimeter server which presents corresponding sockets to the untrustred network. The session multiplexing capabilities of the protocol used between the perimeter server and perimeter client permit a single communication session therebetween to support a plurality of communication sessions between the perimeter server and untrusted network. In the event data flows across the communication sessions are encrypted, decryption of the data flows is left to the components at the end points of the communication session, thereby restricting exposure of privileged information to areas within trusted networks.Type: ApplicationFiled: October 23, 2008Publication date: February 12, 2009Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Bill Burcham, Sanjay Cherian, Darron Shaffer
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Patent number: 7444505Abstract: A system, method and apparatus for securing communications between a trusted network and an untrusted network are disclosed. A perimeter client is deployed within the trusted network and communicates over a session multiplexing enabled protocol with a perimeter server deployed within a demilitarized zone network. The perimeter client presents requests to make available and communication initiation requests to the perimeter server which presents corresponding sockets to the untrustred network. The session multiplexing capabilities of the protocol used between the perimeter server and perimeter client permit a single communication session therebetween to support a plurality of communication sessions between the perimeter server and untrusted network. In the event data flows across the communication sessions are encrypted, decryption of the data flows is left to the components at the end points of the communication session, thereby restricting exposure of privileged information to areas within trusted networks.Type: GrantFiled: April 22, 2004Date of Patent: October 28, 2008Assignee: AT&T Intellectual Property I, L.P.Inventors: Bill Burcham, Sanjay Cherian, Darron Shaffer
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Publication number: 20080120417Abstract: Techniques for network-initiated session recovery are described. A relationship is maintained between two identifiers both associated with a session between a first device and an access terminal in a wireless network. The first identifier is associated with the first device, and the second identifier is associated with a second device in communication with the first device. After a breach of the session, communications associated with the session are preserved based on the relationship between the first and second identifiers.Type: ApplicationFiled: November 22, 2006Publication date: May 22, 2008Inventors: Gopal Harikumar, Woojune Kim, Dennis Ng, Sanjay Cherian
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Publication number: 20070097916Abstract: In connection with a radio access network that enables many-to-many communication between radio network controllers and radio nodes through a packet network, techniques for establishing a primary association between a first radio network controller (RNC) and a first radio node (RN), establishing a secondary association between the first RNC and a second RN, the first RN and the second RN being in different subnets, establishing a first traffic channel between a first access terminal and the first RNC when the first access terminal is in an active state in a coverage area of the first RN; and maintaining the first traffic channel between the first access terminal and the first RNC as the first access terminal moves from the coverage area of the first RN to any portion of the coverage area of the second RN while remaining in the active state.Type: ApplicationFiled: December 18, 2006Publication date: May 3, 2007Inventors: Vedat Eyuboglu, Woojune Kim, Sanjay Cherian
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Patent number: 7170871Abstract: A first session is established for a first mobile access terminal on a first radio network controller via a first radio node. A first traffic channel is established between the first mobile access terminal and the first radio network controller. A first plurality of packets are sent and received over the first traffic channel. The first plurality of packets travel between a first radio node and the first radio network controller without passing through a second radio network controller. The first traffic channel is maintained as the first access terminal moves from a coverage area of the first radio node to a coverage area of a second radio node. A second plurality of packets travel between the second radio node and the first radio network controller without passing through another radio network controller.Type: GrantFiled: May 18, 2004Date of Patent: January 30, 2007Assignee: Airvana, Inc.Inventors: Vedat Eyuboglu, Woojune Kim, Sanjay Cherian
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Publication number: 20060294241Abstract: A radio network controller and methods for reestablishing sessions in a wireless network are described. At least a portion of session information associated with a first session is saved; and in response to detecting an unexpected degradation of the first session, reestablishment of the first session is triggered using the portion of the session information.Type: ApplicationFiled: June 24, 2005Publication date: December 28, 2006Inventors: Sanjay Cherian, Dennis Ng, Arthur Barabell, Suresh Ramaswamy, Deepak Garg
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Publication number: 20050240994Abstract: A system, method and apparatus for securing communications between a trusted network and an untrusted network are disclosed. A perimeter client is deployed within the trusted network and communicates over a session multiplexing enabled protocol with a perimeter server deployed within a demilitarized zone network. The perimeter client presents requests to make available and communication initiation requests to the perimeter server which presents corresponding sockets to the untrustred network. The session multiplexing capabilities of the protocol used between the perimeter server and perimeter client permit a single communication session therebetween to support a plurality of communication sessions between the perimeter server and untrusted network. In the event data flows across the communication sessions are encrypted, decryption of the data flows is left to the components at the end points of the communication session, thereby restricting exposure of privileged information to areas within trusted networks.Type: ApplicationFiled: April 22, 2004Publication date: October 27, 2005Inventors: Bill Burcham, Sanjay Cherian, Darron Shaffer
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Publication number: 20050213555Abstract: In a radio access network, multiple radio network controllers are connected to several radio nodes using a network. The interconnected radio network controllers and radio nodes are addressable, and, therefore, each radio network controller can communicate directly with each radio node and visa versa. The radio access network can be configured to avoid active handoffs between radio network controllers by maintaining a traffic channel set up between an access terminal and a radio network controller even as the flow.Type: ApplicationFiled: January 18, 2005Publication date: September 29, 2005Inventors: Vedat Eyuboglu, Arthur Barabell, Sanjay Cherian