Patents by Inventor Yuan-Rong Shen

Yuan-Rong Shen 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: 8588837
    Abstract: An open loop power control method for setting a transmit power of mobile station (22) during a handoff from a voice over Internet protocol (VoIP) service to a circuit switched service sets a transmit power of the mobile station based upon a power level associated with the VoIP call. A disclosed example includes using an average power level of a reverse pilot channel of the VoIP call and correction factors based upon forward link and reverse link parameters during the VoIP call.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: November 19, 2013
    Assignee: Alcatel Lucent
    Inventors: Dongzhe Cui, Yuan-Rong Shen, I-Fong Antonio Wu
  • Patent number: 8249642
    Abstract: A wireless communication network (20) includes a power control technique that includes repeating an erasure indicator bit in a transmission from a mobile station (22) to a base station (24, 30, 36). The repeated erasure indicator bit is transmitted on the uplink to each base station. The base station then uses the majority rule of those repeated erasure indicator bits to adjust its transmit power. It results in a desired power control command corresponding to the quality of a downlink between a base station (24, 30, 36) and the mobile station (22). A disclosed example includes using the repeated error indicator bit for deciding whether a recent frame should be considered an erasure. If so, the base station increases power on the downlink forward channel. If not, the base station decreases the transmit power on the downlink forward channel. A disclosed example includes alternative power control adjustment techniques, depending on the recent history of the quality of the downlink.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: August 21, 2012
    Assignee: Alcatel Lucent
    Inventors: Dongzhe Cui, Yuan-Rong Shen
  • Publication number: 20100284371
    Abstract: A wireless communication network (20) includes a power control technique that includes repeating an erasure indicator bit in a transmission from a mobile station (22) to a base station (24, 30, 36). The repeated erasure indicator bit is transmitted on the uplink to each base station. The base station then uses the majority rule of those repeated erasure indicator bits to adjust its transmit power. It results in a desired power control command corresponding to the quality of a downlink between a base station (24, 30, 36) and the mobile station (22). A disclosed example includes using the repeated error indicator bit for deciding whether a recent frame should be considered an erasure. If so, the base station increases power on the downlink forward channel. If not, the base station decreases the transmit power on the downlink forward channel. A disclosed example includes alternative power control adjustment techniques, depending on the recent history of the quality of the downlink.
    Type: Application
    Filed: July 1, 2010
    Publication date: November 11, 2010
    Inventors: Dongzhe Cui, Yuan-Rong Shen
  • Publication number: 20070217397
    Abstract: An open loop power control method for setting a transmit power of mobile station (22) during a handoff from a voice over Internet protocol (VoIP) service to a circuit switched service sets a transmit power of the mobile station based upon a power level associated with the VoIP call. A disclosed example includes using an average power level of a reverse pilot channel of the VoIP call and correction factors based upon forward link and reverse link parameters during the VoIP call.
    Type: Application
    Filed: March 15, 2006
    Publication date: September 20, 2007
    Inventors: Dongzhe Cui, Yuan-Rong Shen, I-Fong Wu
  • Publication number: 20070177544
    Abstract: A wireless communication network (20) includes a power control technique that includes repeating an erasure indicator bit in a transmission from a mobile station (22) to a base station (24, 30, 36). The repeated erasure indicator bit is transmitted on the uplink to each base station. The base station then uses the majority rule of those repeated erasure indicator bits to adjust its transmit power. It results in a desired power control command corresponding to the quality of a downlink between a base station (24, 30, 36) and the mobile station (22). A disclosed example includes using the repeated error indicator bit for deciding whether a recent frame should be considered an erasure. If so, the base station increases power on the downlink forward channel. If not, the base station decreases the transmit power on the downlink forward channel. A disclosed example includes alternative power control adjustment techniques, depending on the recent history of the quality of the downlink.
    Type: Application
    Filed: January 27, 2006
    Publication date: August 2, 2007
    Inventors: Dongzhe Cui, Yuan-Rong Shen
  • Patent number: 5642348
    Abstract: An access director provides a gateway for customer premise based equipment (both wired and wireless) and a wireless port facility to a narrowband/broadband information distribution network. It provides a portable narrowband duplex synchronous and isochronous telephony service and concurrent broad fixed location dodwn link from network to customer isochronous service. The down link broadband service may be combined with narrowband up link service to provide non-symmetric duplex operation or services such as interactive video.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: June 24, 1997
    Assignee: Lucent Technologies Inc.
    Inventors: Farhad Barzegar, Diakoumis P. Gerakoulis, Robert Raymond Miller, II, Yuan-Rong Shen