Patents by Inventor Meghana Sahasrabudhe
Meghana Sahasrabudhe 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: 9686669Abstract: A method of communication that includes sending a first message from user equipment to a server, requesting a home agent and/or a home address. The method also includes authenticating the user equipment and providing the home agent and/or home address only when the user equipment is authenticated. Also, a communication system, a server, and user equipment that are configured to implement the method.Type: GrantFiled: March 11, 2005Date of Patent: June 20, 2017Assignee: Nokia Technologies OyInventors: Vijay Devarapalli, Basavaraj Patil, Mohan Parthasarathy, Hannu Flinck, Meghana Sahasrabudhe
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Patent number: 9445272Abstract: The invention proposes a system for authenticating and authorizing network services comprising: a mobile device being adapted to, upon receipt of an information message indicating at least one network access type, determine the network access type, to create a start message containing at least a user identity, and to encapsulate the start message in an authentication message compatible with the access network identified in the information message, and an access controller for reading the encapsulated message from the mobile and forwarding the encapsulated message to an authentication server identified in the encapsulated message. The invention also proposes a corresponding method for authenticating and authorizing network services, and an access control device, a subscriber device and a router device.Type: GrantFiled: September 29, 2014Date of Patent: September 13, 2016Assignee: Nokia Technologies OyInventors: Jari T. Malinen, Timothy J. Kniveton, Meghana Sahasrabudhe
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Publication number: 20150016609Abstract: The invention proposes a system for authenticating and authorizing network services comprising: a mobile device being adapted to, upon receipt of an information message indicating at least one network access type, determine the network access type, to create a start message containing at least a user identity, and to encapsulate the start message in an authentication message compatible with the access network identified in the information message, and an access controller for reading the encapsulated message from the mobile and forwarding the encapsulated message to an authentication server identified in the encapsulated message. The invention also proposes a corresponding method for authenticating and authorizing network services, and an access control device, a subscriber device and a router device.Type: ApplicationFiled: September 29, 2014Publication date: January 15, 2015Inventors: Jari T. Malinen, Timothy J. Kniveton, Meghana Sahasrabudhe
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Patent number: 8869242Abstract: The invention proposes a system for authenticating and authorizing network services comprising: a mobile device being adapted to, upon receipt of an information message indicating at least one network access type, determine the network access type, to create a start message containing at least a user identity, and to encapsulate the start message in an authentication message compatible with the access network identified in the information message, and an access controller for reading the encapsulated message from the mobile and forwarding the encapsulated message to an authentication server identified in the encapsulated message. The invention also proposes a corresponding method for authenticating and authorizing network services, and an access control device, a subscriber device and a router device.Type: GrantFiled: November 16, 2012Date of Patent: October 21, 2014Assignee: Nokia CorporationInventors: Jari T. Malinen, Timothy J. Kniveton, Meghana Sahasrabudhe
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Publication number: 20130074161Abstract: The invention proposes a system for authenticating and authorizing network services comprising: a mobile device being adapted to, upon receipt of an information message indicating at least one network access type, determine the network access type, to create a start message containing at least a user identity, and to encapsulate the start message in an authentication message compatible with the access network identified in the information message, and an access controller for reading the encapsulated message from the mobile and forwarding the encapsulated message to an authentication server identified in the encapsulated message. The invention also proposes a corresponding method for authenticating and authorizing network services, and an access control device, a subscriber device and a router device.Type: ApplicationFiled: November 16, 2012Publication date: March 21, 2013Inventors: Jari T. Malinen, Timothy J. Kniveton, Meghana Sahasrabudhe
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Patent number: 8341700Abstract: The invention proposes a system for authenticating and authorizing network services comprising: a mobile device being adapted to, upon receipt of an information message indicating at least one network access type, determine the network access type, to create a start message containing at least a user identity, and to encapsulate the start message in an authentication message compatible with the access network identified in the information message, and an access controller for reading the encapsulated message from the mobile and forwarding the encapsulated message to an authentication server identified in the encapsulated message. The invention also proposes a corresponding method for authenticating and authorizing network services, and an access control device, a subscriber device and a router device.Type: GrantFiled: October 8, 2004Date of Patent: December 25, 2012Assignee: Nokia CorporationInventors: Jari T. Malinen, Timothy J. Kniveton, Meghana Sahasrabudhe
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Patent number: 8305962Abstract: A heterogeneous wireless communication network includes a home access network with a home network characteristic and a home network policy, and a visiting access network with a visiting network characteristic and a visiting network policy. A packet data node gateway is adapted to communicate with the home access network and the visiting access network over a first communication path. An out-of-band communication path substantially separate from the first communication path is adapted to carry the visiting network policy from the visiting access network to the packet data node gateway. When the terminal is handed off from the home network to the visiting network, the packet data node gateway retrieves the visiting network policy, and the terminal accesses the visiting network over the first communication path using the visiting network policy.Type: GrantFiled: June 22, 2009Date of Patent: November 6, 2012Assignee: Nokia Siemens Networks GmbH & Co. KGInventors: Naheed Vora, Kevin Tang, Yinghua Ye, Meghana Sahasrabudhe
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Patent number: 8244247Abstract: A method for updating filters, at a Packet Data Serving Node, with a care-of-address associated with at least one of a mobile station or a correspondent node. The method includes the steps of implementing a soft filtering rule at a Packet Data Serving Node and receiving, by the Packet Data Serving Node, a care-of-address that is associated with at least one the mobile station and a correspondent node. The method also includes updating, by the Packet Data Serving Node, filters with the care-of-address to correctly identify flows belonging to a particular session during Mobile IP use. The method further includes filtering, by the Packet Data Serving Node, packets including a care-of-address that is associated with one of the mobile station and the correspondent node.Type: GrantFiled: May 8, 2008Date of Patent: August 14, 2012Assignee: Nokia CorporationInventors: Vijay Devarapalli, Meghana Sahasrabudhe, Basavaraj Patil, Kengatharan Sivalingam, Franck Le
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Patent number: 8223728Abstract: An architecture by which combined scheduling and network coding can be used in mesh networks, and more particularly wireless mesh networks. In various embodiments, this architecture includes a scheduling MAC protocol for scheduling nodes in the mesh network in order to take advantage of network coding opportunities. The schedule takes advantage of these opportunities by assigning a gain to transmit packets based upon the number of packets that are transmitted concurrently and choosing a schedule which minimizes the gain over the scheduling horizon. Regarding the assigned gain, in one embodiment this value is one for basic non-encoded operations and two or more for encoded operations. A scheduling MAC protocol is also used to announce and arbitrate network coding opportunities by indicating which packets (as characterized by their transmission slot) are to be encoded with each other.Type: GrantFiled: April 4, 2007Date of Patent: July 17, 2012Assignee: Nokia CorporationInventors: Cedric Westphal, Ying Ye, Kevin Tang, Naheed Vora, Meghana Sahasrabudhe
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Publication number: 20120093074Abstract: A user equipment UE context is stored in a local memory including a session context for a breakout data session. The session context comprises a source internet protocol IP address, a destination IP address, an identifier of a former local breakout gateway LBGW and an identifier of a new LBGW. The former LBGW receives first traffic originating from the destination IP address and addressed to the source IP address, and uses the session context to forward the first traffic from the former LBGW to the new LBGW via a first tunnel. There is thus a globally routable IP address for the session context that need not change when the UE moves from one LBGW to another. Embodiments are detailed for routing through more than two LBGWs, and for when the UE initiates another breakout data session on the new LBGW ion addition to the aforesaid breakout data session.Type: ApplicationFiled: October 15, 2010Publication date: April 19, 2012Inventors: Jussi-Pekka Sairanen, Meghana Sahasrabudhe, Naheed Vora, Yinghua Ye
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Publication number: 20100322212Abstract: A heterogeneous wireless communication network includes a home access network with a home network characteristic and a home network policy, and a visiting access network with a visiting network characteristic and a visiting network policy. A packet data node gateway is adapted to communicate with the home access network and the visiting access network over a first communication path. An out-of-band communication path substantially separate from the first communication path is adapted to carry the visiting network policy from the visiting access network to the packet data node gateway. When the terminal is handed off from the home network to the visiting network, the packet data node gateway retrieves the visiting network policy, and the terminal accesses the visiting network over the first communication path using the visiting network policy.Type: ApplicationFiled: June 22, 2009Publication date: December 23, 2010Applicant: Nokia Siemens Networks OyInventors: Naheed Vora, Kevin Tang, Yinghua Ye, Meghana Sahasrabudhe
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Publication number: 20090154431Abstract: Various example embodiment are disclosed. An example embodiment may include sending, by a relay node in a wireless network, a ready to send message to a plurality of wireless nodes. The ready to send message may indicate access channels for each of the wireless nodes to send clear to send messages. This example may also include receiving, via the indicated access channels for sending the clear to send messages, the clear to send messages from each of the wireless nodes. This example may also include sending an XOR-ed packet to the wireless nodes in response to receiving the clear to send messages. The XOR-ed packet may indicate access channels for each of the wireless nodes to send acknowledgment messages.Type: ApplicationFiled: December 13, 2007Publication date: June 18, 2009Inventors: Kevin Tang, Cedric Westphal, Meghana Sahasrabudhe, Yinghua Ye
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Publication number: 20080247407Abstract: An architecture by which combined scheduling and network coding can be used in mesh networks, and more particularly wireless mesh networks. In various embodiments, this architecture includes a scheduling MAC protocol for scheduling nodes in the mesh network in order to take advantage of network coding opportunities. The schedule takes advantage of these opportunities by assigning a gain to transmit packets based upon the number of packets that are transmitted concurrently and choosing a schedule which minimizes the gain over the scheduling horizon. Regarding the assigned gain, in one embodiment this value is one for basic non-encoded operations and two or more for encoded operations. A scheduling MAC protocol is also used to announce and arbitrate network coding opportunities by indicating which packets (as characterized by their transmission slot) are to be encoded with each other.Type: ApplicationFiled: April 4, 2007Publication date: October 9, 2008Inventors: Cedric Westphal, Ying Ye, Kevin Tang, Naheed Vora, Meghana Sahasrabudhe
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Publication number: 20080240020Abstract: A device comprises a first binding unit which provides for a binding to a first tunnelling server using a first protocol, a second binding unit which provides for a binding to a second tunnelling server using a second protocol different from the first protocol, and an authorizing unit which causes the first or second binding unit to provide the binding.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Inventors: Ying Ye, Meghana Sahasrabudhe, Cedric Westphal, Kevin Tang, Naheed Vora
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Publication number: 20080212478Abstract: A method for updating filters, at a Packet Data Serving Node, with a care-of-address associated with at least one of a mobile station or a correspondent node. The method includes the steps of implementing a soft filtering rule at a Packet Data Serving Node and receiving, by the Packet Data Serving Node, a care-of-address that is associated with at least one the mobile station and a correspondent node. The method also includes updating, by the Packet Data Serving Node, filters with the care-of-address to correctly identify flows belonging to a particular session during Mobile IP use. The method further includes filtering, by the Packet Data Serving Node, packets including a care-of-address that is associated with one of the mobile station and the correspondent node.Type: ApplicationFiled: May 8, 2008Publication date: September 4, 2008Inventors: Vijay Devarapalli, Meghana Sahasrabudhe, Basavaraj Patil, Kengatharan Sivalingam, Franck Le
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Publication number: 20080170544Abstract: A method comprising transmitting a busy signal from a first node; receiving said busy signal at a second node; and transmitting data from said second node to said first node on a channel associated with said busy signal.Type: ApplicationFiled: July 10, 2007Publication date: July 17, 2008Inventors: Kevin Tang, Cedric Westphal, Ying Ye, Meghana Sahasrabudhe, Naheed Vora
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Patent number: 7385946Abstract: A method for updating filters, at a Packet Data Serving Node, with a care-of-address associated with at least one of a mobile station or a correspondent node. The method includes the steps of implementing a soft filtering rule at a Packet Data Serving Node and receiving, by the Packet Data Serving Node, a care-of-address that is associated with at least one the mobile station and a correspondent node. The method also includes updating, by the Packet Data Serving Node, filters with the care-of-address to correctly identify flows belonging to a particular session during Mobile IP use. The method further includes filtering, by the Packet Data Serving Node, packets including a care-of-address that is associated with one of the mobile station and the correspondent node.Type: GrantFiled: June 2, 2005Date of Patent: June 10, 2008Assignee: Nokia CorporationInventors: Vijay Devarapalli, Meghana Sahasrabudhe, Basavaraj Patil, Kengatharan Sivalingam, Franck Le
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Publication number: 20060203791Abstract: A method, mobile station, system, network entity and computer program product are provided for enabling a mobile station (MS) to select which home agent (HA) in a visited network the mobile station will use when accessing packet data services, such as CDMA2000 Packet Data Services. In particular, one or more local home agent addresses are transmitted to the mobile station in response to the generation and transmittal, by the mobile station, of a tunnel setup request. The one or more addresses transmitted may be based on an IP Service Identifier generated by the mobile station and included in the tunnel setup request (i.e., in response to the mobile station requesting a local home agent). Alternatively, the one or more addresses may be based on a Network Access Identifier associated with the mobile station, as well as an IP address associated with the tunnel termination endpoint that received the tunnel setup request (i.e.Type: ApplicationFiled: March 10, 2006Publication date: September 14, 2006Applicant: Nokia CorporationInventors: Inmaculada Carrion-Rodrigo, Meghana Sahasrabudhe, Vijay Devarapalli
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Publication number: 20060130136Abstract: An approach is provided for minimizing tunnel overhead across wireless networks. a method comprises accessing a first wireless network. Using a first wireless network, an address of a security gateway resident within a second wireless network is discovered. A key exchange is initiated with the security gateway to establish a secure tunnel, wherein the security gateway communicates with a home agent configured to allocate a home address for establishing a mobile tunnel within the secure tunnel. The security gateway and the home agent are within the second wireless network.Type: ApplicationFiled: December 1, 2005Publication date: June 15, 2006Inventors: Vijay Devarapalli, Meghana Sahasrabudhe, Inmaculada Carrion Rodrigo, Kalle Ahmavaara
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Patent number: 7035940Abstract: A system and method is directed to updating information in a mobile network. A dynamic signaling routing protocol is extended over bi-directional tunneling between a mobile router and its home agent such that information associated with the home agent of the mobile router reflects roaming of the mobile router as it travels from its home network. The information is determined as a function of a characteristic associated with each link of the tunnel between the mobile router and its home agent. In one embodiment, the information includes a cost metric associated with the cost of the tunnel. The information is advertised to another router. The other router employs the information associated with the tunnel to determine a path for communication.Type: GrantFiled: November 7, 2002Date of Patent: April 25, 2006Assignee: Nokia CorporationInventors: Meghana Sahasrabudhe, Jari T. Malinen