Patents by Inventor Bich Nguyen

Bich Nguyen 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).

  • Publication number: 20060205392
    Abstract: A method for providing feature support is provided that includes receiving, by a mobile station, multiple cell calls and coordinating media associated with the cell calls in order to make a feature of the mobile station functional for an end user of the mobile station. The feature is invoked after the mobile station has roamed from an enterprise network to a cellular network and experienced a handoff.
    Type: Application
    Filed: March 8, 2005
    Publication date: September 14, 2006
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, David Daiker, James Williams
  • Publication number: 20060205407
    Abstract: A method for handing off a call between networks includes monitoring a quality of a first link between a mobile station and a wireless local area network (WLAN) when the mobile station is actively connected with the WLAN on a call and monitoring a quality of a second link between the mobile station and a cellular network when the mobile station is actively connected with the WLAN on the call. The method also includes handing off the call from the WLAN to the cellular network when the quality of the first link is less than a handoff trigger threshold for a drop count duration and when the quality of the second link is greater than a minimum cellular link quality threshold.
    Type: Application
    Filed: May 30, 2006
    Publication date: September 14, 2006
    Applicant: Cisco Technology, Inc.
    Inventors: Ramanathan Jagadeesan, Bich Nguyen
  • Publication number: 20060183478
    Abstract: A method for handling media in a make-before-break handoff between wireless networks is provided that includes communicating with a mobile station to facilitate a session handoff between two call legs of a session. The method also includes identifying a relevant frame of one of the legs, performing a cross correlation operation, generating a delay difference estimate between the two legs, and performing a level difference estimation for the two legs.
    Type: Application
    Filed: February 11, 2005
    Publication date: August 17, 2006
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Andrew Chung, Michael Ramalho
  • Publication number: 20060178147
    Abstract: According to a particular embodiment, a method for assisting in a handoff is provided that includes receiving signaling from one or more access points, which may transmit information to a mobile station. The information may be used to execute a handoff from an enterprise network to a cellular network or from the cellular network to the enterprise network.
    Type: Application
    Filed: February 4, 2005
    Publication date: August 10, 2006
    Inventors: Ramanathan Jagadeesan, Chol Kang, Bich Nguyen, David Stephenson, Richard Rebo
  • Patent number: 7072291
    Abstract: Devices, softwares and methods are provided for redundantly encoding a data stream into frames for network transmission as packets. A main encoder encodes a data stream into main frames, while a redundant encoder encodes it into redundant frames. The redundant frames have a redundant-coding delay from the main frames that is adjustable to accommodate many different sets of network conditions.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: July 4, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanathan Jagadeesan, Bich Nguyen
  • Publication number: 20060128384
    Abstract: The present invention provides methods and devices using location detection to enable MMMDs to activate and tune to appropriate radios and networks. Some preferred embodiments use radio frequency identification (“RFID”)—based location detection. Preferably, the location detection occurs at or near wireless domain boundaries. Some implementations employ proximity/boundary detection to enhance handoff triggers, which initiate handoff mechanisms between different networks, as an MMMD moves between wireless networks, via a wireless domain portal. Some implementations involve methods and devices for device validation and authorization. An MMMD is provided with local wireless network awareness, which may be used by the MMMD to have the appropriate radio turned on and properly tuned. Accordingly, the methods and devices of the present invention achieve power savings and improved handoff across networks.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 15, 2006
    Applicant: Cisco Technology, Inc., A corporation of california
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Andrew Chung, Arthur Howarth
  • Publication number: 20060121891
    Abstract: A mobile station is provided that includes a first wireless interface operable to couple to a first wireless network, and a second wireless interface operable to couple to a second wireless network. A controller included in the mobile station is operable to negotiate a first wireless link with the first wireless network using the first wireless interface, to establish a communication session with a device using the first wireless link, to facilitate the communication session with a second wireless link with the second wireless network using the second wireless interface, and to invoke a selected one of a plurality of private branch exchange features. One or more of the features are delivered to the mobile station via a phone feature proxy function that is enabled by a mobility application that is operable to communicate with the mobile station.
    Type: Application
    Filed: December 3, 2004
    Publication date: June 8, 2006
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Christopher Pearce
  • Publication number: 20060121902
    Abstract: A method for facilitating communications between wireless networks is provided that includes communicating with a mobile station and transferring a communication session from a first wireless link to a second wireless link. The mobile station is operable to negotiate a first wireless link with a first wireless network, to establish a communication session with a device using the first wireless link, and to facilitate a session handoff with a second wireless link with the second wireless network using the second wireless interface. The handoff is enabled by associating the first wireless link to the second wireless link.
    Type: Application
    Filed: December 3, 2004
    Publication date: June 8, 2006
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Andrew Chung, Christopher Pearce
  • Publication number: 20060094429
    Abstract: A mobile device supports concurrent registrations of different wireless personalities with one or more service provider networks. Potentially using a single wireless interface, the mobile device can register and maintain multiple personalities and monitor for notifications targeted to any one of these personalities.
    Type: Application
    Filed: December 16, 2005
    Publication date: May 4, 2006
    Inventors: Michael Ramalho, Ramanathan Jagadeesan, Bich Nguyen
  • Patent number: 7035282
    Abstract: Wideband telephones, gateways, adapters, software, and methods are provided for implementing wideband telephony over a network. A WB IP telephone has a WB telephone, a codec for encoding voice into voice data bits, and a packetizer for encoding groups of the voice data bits in intermediate packets. An adapter for an analog WB telephone has a digital to analog converter, a codec and a packetizer. The intermediate packets are generally not in form that would be ready for network transmission. The WB IP telephone also includes a modem for connecting to the network over a telephone line. A voice gateway receives the encoded voice, and adds packet headers to it, to make it suitable for transmission through the network to a cooperating gateway. The cooperating gateway in turn strips the headers for the receiving WB IP telephone. The WB IP telephones can thus be connected to the network using only PSTN lines.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: April 25, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanathan Jagadeesan, Bich Nguyen
  • Publication number: 20060083263
    Abstract: A system for multicast streaming of programs over a packet network includes a node having a processor that conditions a video bitstream such that packets containing an I-frame are located near program specific information (PSI) packets, the processor marking a random join point (RJP) in the video bitstream immediately preceding the I-frame and PSI packets, the node outputting the conditioned and marked video bitstream across the packet network. An edge device of the network includes a buffer that caches packets of the conditioned and marked video bitstream video starting at the RJP, and sends the cached packets to a client receiver. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: October 20, 2004
    Publication date: April 20, 2006
    Applicant: Cisco Technology, Inc.
    Inventors: Ramanathan Jagadeesan, Kristen Robins, Bich Nguyen, Fang Wu
  • Publication number: 20060072600
    Abstract: Devices, software, and methods quantify a burstiness quality of the packet loss in the node of a path. The quantified burstiness becomes a metric for determining the Quality of Service (QoS) offered by a node in retransmitting data through a network. Network routing and rerouting decisions are made according to the improved QoS. The burstiness statistic is determined by counting lengths of episodes of sequentially discarded packets at the node. The burstiness statistic is incorporated as a metric with the other metrics of the QoS of the node.
    Type: Application
    Filed: December 2, 2005
    Publication date: April 6, 2006
    Applicant: Cisco Technology, Inc.
    Inventors: Philip Graham, Ramanathan Jagadeesan, Bich Nguyen
  • Publication number: 20060058032
    Abstract: A mobile station includes a first wireless interface that can couple to a first wireless network, a second wireless interface that can couple to a second wireless network, and a controller. The controller can negotiate a first wireless link with the first wireless network using the first wireless interface and establish a communication session with a remote device using the first wireless link. The controller can also detect a session handoff trigger, negotiate a second wireless link with the second wireless network using the second wireless interface in response to the session handoff trigger, and invoke a private branch exchange feature to transfer the communication session from the first wireless link to the second wireless link.
    Type: Application
    Filed: September 10, 2004
    Publication date: March 16, 2006
    Inventors: Christopher Pearce, Ramanathan Jagadeesan, Bich Nguyen
  • Publication number: 20050148362
    Abstract: A method is provided that includes receiving a request from a communication device to establish a communication session with a mobile station, the mobile station being operable to roam between a private and a public network. The mobile station is signaled via a cellular data network that a call is being initiated for the mobile station. Signaling information may be exchanged with a voice gateway such that one or more voice circuits are established. A signaling pathway may be established between an Internet protocol private branch exchange (IP PBX) and the mobile station via the cellular data network. The establishment of the signaling pathway is substantially concurrent with the establishment of one or more of the voice circuits. One or more features associated with a private network are delivered to the mobile station during the communication session as an end user moves between the public and private networks.
    Type: Application
    Filed: February 21, 2005
    Publication date: July 7, 2005
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Kamaldip Toor, Sudhakar Valluru, Christopher Pearce
  • Publication number: 20050131643
    Abstract: A method for communicating navigation information includes receiving destination information from a user. The destination information comprises a desired destination of the user. The method includes determining a first route to the destination and communicating the first route to the user. The method includes monitoring position information of a plurality of vehicles and identifying an area causing traffic delay using the position information of the plurality of vehicles. The method also includes determining a second route to the destination to avoid the area and communicating the second route to the user.
    Type: Application
    Filed: December 10, 2003
    Publication date: June 16, 2005
    Inventors: Shmuel Shaffer, Gebran Chahrouri, Joseph Khouri, Bich Nguyen
  • Publication number: 20050085146
    Abstract: An insulation package comprising a layer of material having a cellular structure disposed between a first layer of high-strength polymeric fabric and a second layer of high-strength polymeric fabric. The insulation provides protection for critical fluid systems, such as fuel, hydraulic, electrical, pneumatic, thermal, and mechanical systems from high-energy projectiles such as fragments from the disintegration of high-speed turbines and engines.
    Type: Application
    Filed: September 24, 2003
    Publication date: April 21, 2005
    Inventors: Tibor Farkas, Todd Jensen, Bich Nguyen
  • Publication number: 20050063359
    Abstract: A method is provided that includes receiving a request from a communication device to establish a communication session with a mobile station, the mobile station being operable to roam between a private and a public network. The mobile station is signaled via a cellular data network that a call is being initiated for the mobile station. Signaling information may be exchanged with a voice gateway such that one or more voice circuits are established. A signaling pathway may be established between an Internet protocol private branch exchange (IP PBX) and the mobile station via the cellular data network. The establishment of the signaling pathway is substantially concurrent with the establishment of one or more of the voice circuits. One or more features associated with a private network are delivered to the mobile station during the communication session as an end user moves between the public and private networks.
    Type: Application
    Filed: September 15, 2003
    Publication date: March 24, 2005
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Kamaldip Toor, Sudhakar Valluru, Christopher Pearce
  • Publication number: 20050059402
    Abstract: A method is provided that includes receiving a request from a communication device to establish a communication session with a mobile station. The request is responded to by signaling the mobile station via a cellular data network that a call is being initiated for the mobile station. Signaling information may be exchanged with a voice gateway such that one or more voice circuits are established to accommodate voice data that may propagate between the communication device and the mobile station. A signaling pathway may be established between an Internet protocol private branch exchange (IP PBX) and the mobile station via the cellular data network. The establishment of the signaling pathway is substantially concurrent with the establishment of one or more of the voice circuits such that one or more features associated with a private network are delivered to the mobile station during the communication session.
    Type: Application
    Filed: September 11, 2003
    Publication date: March 17, 2005
    Inventors: Ramanathan Jagadeesan, Bich Nguyen, Kamaldip Toor, Troy Trenchard, Sudhakar Valluru, Tony Wan
  • Publication number: 20050059400
    Abstract: A method for handing off a call between networks includes monitoring a quality of a first link between a mobile station and a wireless local area network (WLAN) when the mobile station is actively connected with the WLAN on a call and monitoring a quality of a second link between the mobile station and a cellular network when the mobile station is actively connected with the WLAN on the call. The method also includes handing off the call from the WLAN to the cellular network when the quality of the first link is less than a handoff trigger threshold for a drop count duration and when the quality of the second link is greater than a minimum cellular link quality threshold.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 17, 2005
    Inventors: Ramanathan Jagadeesan, Bich Nguyen
  • Publication number: 20050037746
    Abstract: A mobile device supports concurrent registrations of different wireless personalities with one or more service provider networks. Potentially using a single wireless interface, the mobile device can register and maintain multiple personalities and monitor for notifications targeted to any one of these personalities.
    Type: Application
    Filed: August 14, 2003
    Publication date: February 17, 2005
    Inventors: Michael Ramalho, Ramanathan Jagadeesan, Bich Nguyen