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).

  • Patent number: 9019935
    Abstract: 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: Grant
    Filed: March 26, 2012
    Date of Patent: April 28, 2015
    Assignee: Ericsson EVDO Inc.
    Inventors: M. Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
  • Patent number: 8615238
    Abstract: 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: Grant
    Filed: August 16, 2010
    Date of Patent: December 24, 2013
    Assignee: Ericsson EVDO Inc.
    Inventors: Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
  • Publication number: 20120243476
    Abstract: 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: Application
    Filed: March 26, 2012
    Publication date: September 27, 2012
    Inventors: M. Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
  • Patent number: 8195187
    Abstract: 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: Grant
    Filed: January 18, 2005
    Date of Patent: June 5, 2012
    Assignee: Airvana Network Solutions, Inc.
    Inventors: Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
  • Patent number: 8160020
    Abstract: 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: Grant
    Filed: June 25, 2001
    Date of Patent: April 17, 2012
    Assignee: Airvana Network Solutions, Inc.
    Inventors: M. Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
  • Patent number: 8099504
    Abstract: 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: Grant
    Filed: June 24, 2005
    Date of Patent: January 17, 2012
    Assignee: Airvana Network Solutions, Inc.
    Inventors: Sanjay Cherian, Dennis Ng, Arthur J. Barabell, Suresh Ramaswamy, Deepak Garg
  • Patent number: 7934001
    Abstract: 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: Grant
    Filed: April 22, 2010
    Date of Patent: April 26, 2011
    Assignee: Airvana Network Solutions, Inc.
    Inventors: Gopal Harikumar, Woojune Kim, Dennis Ng, Sanjay Cherian
  • Patent number: 7900249
    Abstract: 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: Grant
    Filed: October 23, 2008
    Date of Patent: March 1, 2011
    Assignee: Sterling Commerce, Inc.
    Inventors: Bill Burcham, Sanjay Cherian, Darron Shaffer
  • Publication number: 20110032824
    Abstract: 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: Application
    Filed: August 16, 2010
    Publication date: February 10, 2011
    Inventors: Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
  • Patent number: 7853263
    Abstract: 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: Grant
    Filed: January 18, 2005
    Date of Patent: December 14, 2010
    Assignee: Airvana, Inc.
    Inventors: Vedat Eyuboglu, Arthur J. Barabell, Sanjay Cherian
  • Publication number: 20100202362
    Abstract: 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: Application
    Filed: April 22, 2010
    Publication date: August 12, 2010
    Inventors: Gopal Harikumar, Woojune Kim, Dennis Ng, Sanjay Cherian
  • Patent number: 7730189
    Abstract: 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: Grant
    Filed: November 22, 2006
    Date of Patent: June 1, 2010
    Assignee: Airvana, Inc.
    Inventors: Gopal Harikumar, Woojune Kim, Dennis Ng, Sanjay Cherian
  • Publication number: 20090044262
    Abstract: 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: Application
    Filed: October 23, 2008
    Publication date: February 12, 2009
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Bill Burcham, Sanjay Cherian, Darron Shaffer
  • Patent number: 7444505
    Abstract: 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: Grant
    Filed: April 22, 2004
    Date of Patent: October 28, 2008
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Bill Burcham, Sanjay Cherian, Darron Shaffer
  • Publication number: 20080120417
    Abstract: 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: Application
    Filed: November 22, 2006
    Publication date: May 22, 2008
    Inventors: Gopal Harikumar, Woojune Kim, Dennis Ng, Sanjay Cherian
  • Publication number: 20070097916
    Abstract: 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: Application
    Filed: December 18, 2006
    Publication date: May 3, 2007
    Inventors: Vedat Eyuboglu, Woojune Kim, Sanjay Cherian
  • Patent number: 7170871
    Abstract: 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: Grant
    Filed: May 18, 2004
    Date of Patent: January 30, 2007
    Assignee: Airvana, Inc.
    Inventors: Vedat Eyuboglu, Woojune Kim, Sanjay Cherian
  • Publication number: 20060294241
    Abstract: 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: Application
    Filed: June 24, 2005
    Publication date: December 28, 2006
    Inventors: Sanjay Cherian, Dennis Ng, Arthur Barabell, Suresh Ramaswamy, Deepak Garg
  • Publication number: 20050240994
    Abstract: 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: Application
    Filed: April 22, 2004
    Publication date: October 27, 2005
    Inventors: Bill Burcham, Sanjay Cherian, Darron Shaffer
  • Publication number: 20050213555
    Abstract: 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: Application
    Filed: January 18, 2005
    Publication date: September 29, 2005
    Inventors: Vedat Eyuboglu, Arthur Barabell, Sanjay Cherian