Patents by Inventor Sanil Kumar Puthiyandyil
Sanil Kumar Puthiyandyil 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: 8509739Abstract: A network system for communicating with mobile nodes has multiple gateways that can operate with each using a different access technology. In an IPv6 system, the access gateways each provide an interface identifier to the mobile nodes using the same one or more keys and hash so that different the same interface identifier regardless of the access technology used. The access gateways can have multiple options for using keys and/or hashes to provide an interface identifier such that the method for determining the interface identifier is configurable.Type: GrantFiled: June 5, 2012Date of Patent: August 13, 2013Assignee: Cisco Technology, Inc.Inventors: Rajesh Ramankutty, Sanil Kumar Puthiyandyil, Rajesh Velandy
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Patent number: 8441988Abstract: Methods and systems for providing redundancy in servicing packet data communications within wireless mobile data networks are disclosed. More particularly, the method and system provide a redundant Home Agent with the ability to assume the role of the primary Home Agent in the event of a primary Home Agent network, software, or other failure. The redundancy allows the Home Agent services to remain functional even in the event of a failure of one of the Home Agents in the redundant group, which may be composed of one or more Home Agents. The Home Agents can use a service redundancy protocol which is composed of messages that are sent between the redundant group of Home Agents. The messages allow the Home Agents to, for example, back up call session information, check on the status of one another, and share priority information.Type: GrantFiled: July 17, 2012Date of Patent: May 14, 2013Assignee: Cisco Technology, Inc.Inventors: Greg Cheever, Sanil Kumar Puthiyandyil, Rajesh Ramankutty
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Patent number: 8437305Abstract: Methods and systems for providing redundancy in servicing packet data communications within wireless mobile data networks are disclosed. More particularly, the method and system for provide a redundant Home Agent with the ability to assume the role of the primary Home Agent in the event of a primary Home Agent network, software, or other failure. The redundancy allows Home Agent services to remain functional in the case of a failure of one of the Home Agents in the redundant group, which may be composed of one or more Home Agents. The Home Agents can be located in geographically separate areas to ensure that a network outage event in one geographic area does not cause subscriber services to be impacted.Type: GrantFiled: November 23, 2005Date of Patent: May 7, 2013Assignee: Cisco Technology, Inc.Inventors: Greg Cheever, Sanil Kumar Puthiyandyil, Rajesh Ramankutty, Satya (Satish) Vasamsetti, Clarence Drumheller
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Patent number: 8363664Abstract: The functionalities of one or more of a mobility management entity (MME), serving gateway (SGW), and packet data network gateway (PGW) can be provided in a single device on the network. In the access gateway different functional elements are implemented as services and they can be configured on the same device. For example, the SGW and PGW can be configured on the same device. When user equipment UE connects from a home network, it is possible for the MME to choose the same SGW and PGW. This combined SGW and PGW can implement a single session for the UE, thereby capable of providing a savings in resources, allowing additional capacity, and allowing reduced latency and increased throughput because fewer hops are made on the network. This session acts as a SGW on the ingress side and a PGW on the egress side of the access gateway.Type: GrantFiled: August 18, 2009Date of Patent: January 29, 2013Assignee: Cisco Technology, Inc.Inventors: Rajesh Ramankutty, Rajesh Velandy, Sanil Kumar Puthiyandyil
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Patent number: 8358602Abstract: Methods and systems for providing network connectivity in wireless networks are provided. This network connectivity can involve a mobile node being able to connect with more than one network at the same time and supporting multiple protocol sessions. Additionally, modifications can be made to allow a mobile node to have multiple IP addresses. These modifications include using a packet data network identifier along with a network control protocol to allow a network device to provide to user equipment (UE) multiple packet data network connections. The network device can be a access gateway or HPRD serving gateway (HSGW) that sets up the PDN connections for the UE. The packet data network identifier can be used to distinguish between multiple PDN connections for a UE.Type: GrantFiled: June 29, 2009Date of Patent: January 22, 2013Assignee: Cisco Technology, Inc.Inventors: Sanil Kumar Puthiyandyil, Rajesh Velandy
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Publication number: 20120281632Abstract: Methods and systems for providing redundancy in servicing packet data communications within wireless mobile data networks are disclosed. More particularly, the method and system provide a redundant Home Agent with the ability to assume the role of the primary Home Agent in the event of a primary Home Agent network, software, or other failure. The redundancy allows the Home Agent services to remain functional even in the event of a failure of one of the Home Agents in the redundant group, which may be composed of one or more Home Agents. The Home Agents can use a service redundancy protocol which is composed of messages that are sent between the redundant group of Home Agents. The messages allow the Home Agents to, for example, back up call session information, check on the status of one another, and share priority information.Type: ApplicationFiled: July 17, 2012Publication date: November 8, 2012Inventors: Greg CHEEVER, Sanil Kumar PUTHIYANDYIL, Rajesh RAMANKUTTY
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Publication number: 20120244862Abstract: A network system for communicating with mobile nodes has multiple gateways that can operate with each using a different access technology. In an IPv6 system, the access gateways each provide an interface identifier to the mobile nodes using the same one or more keys and hash so that different the same interface identifier regardless of the access technology used. The access gateways can have multiple options for using keys and/or hashes to provide an interface identifier such that the method for determining the interface identifier is configurable.Type: ApplicationFiled: June 5, 2012Publication date: September 27, 2012Applicant: CISCO TECHNOLOGY, INC.Inventors: Rajesh RAMANKUTTY, Sanil Kumar PUTHIYANDYIL, Rajesh VELANDY
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Publication number: 20120213067Abstract: Methods and systems are provided for filtering packets in a wireless communication system in the to-subscriber direction. This filtering is at least in part based on RF circuit state information. For example, a packet filter is used that either permits or denies packets from reaching a mobile subscriber based on whether there is already an established RF circuit to provide packets to the mobile subscriber. Alternatively, or in addition, the packet filter may consider the history of circuit state transitions associated with a particular mobile subscriber, the percentage (or aggregate number) of available airlink resources that are currently in use, and/or the length of time associated with the dormancy of a mobile subscriber's RF connection. In various embodiments, the packet filter may cause one or more packets to be sent to a mobile subscriber using a special data channel that does not require the establishment of an RF circuit.Type: ApplicationFiled: May 4, 2012Publication date: August 23, 2012Inventors: MATTHEW H. HARPER, Sanil Kumar Puthiyandyil
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Patent number: 8238877Abstract: A network system for communicating with mobile nodes has multiple gateways that can operate with each using a different access technology. In an IPv6 system, the access gateways each provide an interface identifier to the mobile nodes using the same one or more keys and hash so that different the same interface identifier regardless of the access technology used. The access gateways can have multiple options for using keys and/or hashes to provide an interface identifier such that the method for determining the interface identifier is configurable.Type: GrantFiled: August 14, 2009Date of Patent: August 7, 2012Assignee: Cisco Technology, Inc.Inventors: Rajesh Ramankutty, Sanil Kumar Puthiyandyil, Rajesh Velandy
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Patent number: 8223687Abstract: Methods and systems for providing redundancy in servicing packet data communications within wireless mobile data networks are disclosed. More particularly, the method and system provide a redundant Home Agent with the ability to assume the role of the primary Home Agent in the event of a primary Home Agent network, software, or other failure. The redundancy allows the Home Agent services to remain functional even in the event of a failure of one of the Home Agents in the redundant group, which may be composed of one or more Home Agents. The Home Agents can use a service redundancy protocol which is composed of messages that are sent between the redundant group of Home Agents. The messages allow the Home Agents to, for example, back up call session information, check on the status of one another, and share priority information.Type: GrantFiled: November 23, 2005Date of Patent: July 17, 2012Assignee: Cisco Technology, Inc.Inventors: Greg Cheever, Sanil Kumar Puthiyandyil, Rajesh Ramankutty
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Patent number: 8175534Abstract: Methods and systems are provided for filtering packets in a wireless communication system in the to-mobile subscriber direction. This filtering is at least in part based on RF circuit state information. For example, a packet filter is used that either permits or denies packets from reaching a mobile subscriber based on whether there is already an established RF circuit to provide packets to the mobile subscriber. Alternatively, or in addition, the packet filter may consider the history of circuit state transitions associated with a particular mobile subscriber, the percentage (or aggregate number) of available airlink resources that are currently in use, and/or the length of time associated with the dormancy of a mobile subscriber's RF connection. In various embodiments, the packet filter may cause one or more packets to be sent to a mobile subscriber using a special data channel that does not require the establishment of an RF circuit.Type: GrantFiled: September 3, 2004Date of Patent: May 8, 2012Assignee: Cisco Technology, Inc.Inventors: Matthew H. Harper, Sanil Kumar Puthiyandyil
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Patent number: 8144684Abstract: Systems and methods for bridging packet flows to bypass call legs and/or tunnels are provided. A tunnel initiator, which can be an access gateway, a foreign agent, and a mobility anchor point, for example, provides a bypass for certain packets that have a destination serviced by the same tunnel initiator. The bridge allows the packets to bypass a backhaul loop and reduces latency and frees bandwidth for other purposes in the network. The bridging can be implemented in a tunnel initiator for mobile to mobile packet flows, mobile to land line packet flows, and land line to mobile packet flows. Route optimization can also be provided in certain embodiments.Type: GrantFiled: February 7, 2011Date of Patent: March 27, 2012Assignee: Cisco Technology, Inc.Inventors: Matthew H. Harper, Sanil Kumar Puthiyandyil, Rajesh Ramankutty, Shaji E. Radhakrishnan, Kuntal Chowdhury
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Publication number: 20120054809Abstract: In one embodiment, a video processing server including a memory capable of storing data and a processor is disclosed. The processor is configured for using the data such that the video processing server can receive a request redirected from a gateway for a video content, wherein the request is redirected by the gateway based on information contained in the request and wherein the information contained in the request includes control data used for an optimal delivery of the video content. The processor is further configured for using the data such that the video processing server can send the redirected request to a content provider identified in the request, receive the requested video content from the content provider, and generate a response to the request by modifying the video content based on the control data.Type: ApplicationFiled: August 24, 2010Publication date: March 1, 2012Applicant: Cisco Technology, Inc.Inventors: Kuntal CHOWDHURY, Sanil-Kumar Puthiyandyil, Arun Alex
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Publication number: 20120044908Abstract: Systems and methods are provided that allow inter-working between communication networks for the delivery of service to mobile nodes. A gateway is provided that communicates with a femto cell to extend service to an area that otherwise does not receive coverage from a service provider. The femto cell is a small scale base station used to provide coverage over a small area (such as a home or business), and connect to a home or enterprise network. The femto cell provides service for a mobile node and a gateway permits communication over a broadband network. The gateway integrates the mobile nodes connecting via a femto cell into the service provider's network. The gateway also allows provisioning of services and applications, control of service levels, and provides seamless handoffs to marco base stations and other types of access technologies such as Wi-Fi.Type: ApplicationFiled: November 2, 2011Publication date: February 23, 2012Applicant: CISCO TECHNOLOGY, INC.Inventors: VINCENT SPINELLI, JOHN DEPIETRO, VIJAY KATHURIA, MOHAN RANGAN, RAJAT GHAI, ASHRAF M. DAHOD, RAJESH RAMANKUTTY, SANIL KUMAR PUTHIYANDYIL, SHAJI E. RADHAKRISHNAN
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Patent number: 8064909Abstract: Systems and methods are provided that allow inter-working between communication networks for the delivery of service to mobile nodes. A gateway is provided that communicates with a femto cell to extend service to an area that otherwise does not receive coverage from a service provider. The femto cell is a small scale base station used to provide coverage over a small area (such as a home or business), and connect to a home or enterprise network. The femto cell provides service for a mobile node and a gateway permits communication over a broadband network. The gateway integrates the mobile nodes connecting via a femto cell into the service provider's network. The gateway also allows provisioning of services and applications, control of service levels, and provides seamless handoffs to macro base stations and other types of access technologies such as Wi-Fi.Type: GrantFiled: October 27, 2008Date of Patent: November 22, 2011Assignee: Cisco Technology, Inc.Inventors: Vincent Spinelli, John Depietro, Vijay Kathuria, Mohan Rangan, Rajat Ghai, Ashraf M. Dahod, Rajesh Ramankutty, Sanil Kumar Puthiyandyil, Shaji E. Radhakrishnan
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Patent number: 8018847Abstract: Systems and methods for intercepting and redirecting requests are provided. More particularly, certain information is identified in a packet and the packet is redirected to a specified server. The information that is redirected may be bound for a server in a network that a mobile node is currently visiting, and it is advantageous to fulfill the request in another network instead. The request is redirected to the other network; however, the response to the request may be modified changing the source address and other information so that the response appears to have originated from the server in the visited network to which the mobile node sent the request. Load balancing may also be incorporated when redirecting requests from one or more mobile nodes.Type: GrantFiled: November 15, 2006Date of Patent: September 13, 2011Assignee: Starent Networks LLCInventors: Rajesh Ramankutty, Noel Charath, Sanil Kumar Puthiyandyil
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Publication number: 20110122844Abstract: Systems and methods for bridging packet flows to bypass call legs and/or tunnels are provided. A tunnel initiator, which can be an access gateway, a foreign agent, and a mobility anchor point, for example, provides a bypass for certain packets that have a destination serviced by the same tunnel initiator. The bridge allows the packets to bypass a backhaul loop and reduces latency and frees bandwidth for other purposes in the network. The bridging can be implemented in a tunnel initiator for mobile to mobile packet flows, mobile to land line packet flows, and land line to mobile packet flows. Route optimization can also be provided in certain embodiments.Type: ApplicationFiled: February 7, 2011Publication date: May 26, 2011Applicant: CISCO TECHNOLOGY, INC.Inventors: Matthew H. HARPER, Sanil Kumar PUTHIYANDYIL, Rajesh RAMANKUTTY, Shaji E. RADHAKRISHNAN, Kuntal CHOWDHURY
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Publication number: 20110116378Abstract: A system and method for providing services to packet flows in a communication network. The services include enhanced charging, stateful firewalls, traffic performance optimization (TPO) and advanced services such as content differentiated charging, per-subscriber stateful firewalls, and VPNs, for example. A gateway can be used to route each packet flow through the services on a per-subscriber basis by inspecting accounting messages and checking subscriber profiles prior to setting up a new packet flow session. By directing the packet flow through the services requested latency can be reduced as well as the need to have equipment for each session regardless of whether the service is provided to the packet flow. The services can be provided in-line as well.Type: ApplicationFiled: November 11, 2010Publication date: May 19, 2011Inventors: Rajesh RAMANKUTTY, Sanil Kumar PUTHIYANDYIL, Timothy G. MORTSOLF, Matthew H. HARPER
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Publication number: 20110051683Abstract: Systems and methods for improved inter-technology handovers between wireless networks are disclosed, in which a source radio access network operates on a first technology and a target radio access network operates on a second technology, and both radio access networks are managed at a single packet serving gateway. A foreign agent receives a mobile subscriber identifier during a handover of a mobile device from the source radio access network to the target radio access network and sends the mobile subscriber identifier to the packet serving gateway, and the packet serving gateway locates at least one process instance running on the packet serving gateway that is routing existing packet flows to the mobile device based on the mobile subscriber identifier. The packet serving gateway then transfers control of the at least one process to a control process.Type: ApplicationFiled: July 30, 2010Publication date: March 3, 2011Applicant: Cisco Technology, Inc.Inventors: Rajesh Ramankutty, Sanil Kumar Puthiyandyil
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Patent number: 7885248Abstract: Systems and methods for bridging packet flows to bypass call legs and/or tunnels are provided. A tunnel initiator, which can be an access gateway, a foreign agent, and a mobility anchor point, for example, provides a bypass for certain packets that have a destination serviced by the same tunnel initiator. The bridge allows the packets to bypass a backhaul loop and reduces latency and frees bandwidth for other purposes in the network. The bridging can be implemented in a tunnel initiator for mobile to mobile packet flows, mobile to land line packet flows, and land line to mobile packet flows. Route optimization can also be provided in certain embodiments.Type: GrantFiled: April 17, 2007Date of Patent: February 8, 2011Assignee: Starent Networks LLCInventors: Matthew H. Harper, Sanil Kumar Puthiyandyil, Rajesh Ramankutty, Shaji E. Radhakrishnan, Kuntal Chowdhury