Patents by Inventor Chih-Ming J. Chiang

Chih-Ming J. Chiang 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: 8503324
    Abstract: A method and apparatus for controlling interference in a wireless communication system includes a first step of performing 500 a handoff measurement of a signal parameter for a current site and for nearby sites, and performing 502 a comparison of the signal parameters to select the nearby site having the strongest signal parameter. A next step 504 includes defining a target maximum allowable noise rise for the selected nearby site. A next step 506 includes calculating an upper bound for at least one operating parameter in the current site. A next step 508 includes determining whether a maximum for the at least one operating parameter exceeds 510 the upper bound. A next step 514 includes constraining the at least one operating parameter to no more than the upper bound if the maximum for the at least one operating parameter exceeds the upper bound.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: August 6, 2013
    Assignee: Motorola Mobility LLC
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
  • Patent number: 8504082
    Abstract: A method and information processing system are provided for dynamically encoding a control channel for transmitting messages to a wireless device based on performance capability information associated with the wireless device. The method includes determining that a wireless device (104) has registered with a base station (116). A device profile (128) associated with the wireless device (116) is retrieved from a register (122). A set of performance capabilities associated with the wireless device is determined (408) in response to the retrieving. A coding type for a control channel for sending messages to the wireless device (104) is determined (410) based on the set of performance capabilities associated with the wireless device (104).
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: August 6, 2013
    Assignee: Motorola Mobility LLC
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
  • Patent number: 8223707
    Abstract: A method and Node B are disclosed for allocation of “sticky” resources in an Orthogonal Frequency Division Multiplexing communication system. The Node B comprises a scheduler that is configured to make a sticky resource allocation to a user equipment, determine that a transmit power level allocated for transmissions to the user equipment should be adjusted, determine whether the resources allocated to the user equipment comprise a Quadrature Phase Shift Keying (QPSK) modulation scheme, and in response to determining that the resources allocated to the user equipment comprise a QPSK modulation scheme, adjust the allocated transmit power level without informing the user equipment of the adjustment. The Node B further may condition the determination to adjust the allocated transmit power level without informing the UE of the adjustment based on a size of the adjustment.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: July 17, 2012
    Assignee: Motorola Mobility, Inc.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Mark T. Pflum
  • Publication number: 20120008597
    Abstract: A method and apparatus for controlling interference in a wireless communication system includes a first step of performing 500 a handoff measurement of a signal parameter for a current site and for nearby sites, and performing 502 a comparison of the signal parameters to select the nearby site having the strongest signal parameter. A next step 504 includes defining a target maximum allowable noise rise for the selected nearby site. A next step 506 includes calculating an upper bound for at least one operating parameter in the current site. A next step 508 includes determining whether a maximum for the at least one operating parameter exceeds 510 the upper bound. A next step 514 includes constraining the at least one operating parameter to no more than the upper bound if the maximum for the at least one operating parameter exceeds the upper bound.
    Type: Application
    Filed: September 22, 2011
    Publication date: January 12, 2012
    Applicant: MOTOROLA MOBILITY, INC.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
  • Patent number: 8054808
    Abstract: A method and apparatus for controlling interference in a wireless communication system includes a first step of performing 500 a handoff measurement of a signal parameter for a current site and for nearby sites, and performing 502 a comparison of the signal parameters to select the nearby site having the strongest signal parameter. A next step 504 includes defining a target maximum allowable noise rise for the selected nearby site. A next step 506 includes calculating an upper bound for at least one operating parameter in the current site. A next step 508 includes determining whether a maximum for the at least one operating parameter exceeds 510 the upper bound. A next step 514 includes constraining the at least one operating parameter to no more than the upper bound if the maximum for the at least one operating parameter exceeds the upper bound.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: November 8, 2011
    Assignee: Motorola Mobility, Inc.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
  • Patent number: 8050189
    Abstract: A method, device and computer-readable storage element for dynamically changing a maximum access channel rate at a site in a communication system. The method includes setting a maximum access channel rate for an access channel at a site, which comprises a coverage area for a base station. The method further includes determining a first access probe success rate that measures a rate at which first attempt access probes sent from the terminals on the access channel are received, and changing the maximum access channel rate based on the first access probe success rate.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: November 1, 2011
    Assignee: Motorola Mobility, Inc.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Jonathan H. Gross, Mark T. Pflum
  • Publication number: 20100226340
    Abstract: A method and apparatus for controlling interference in a wireless communication system includes a first step of performing 500 a handoff measurement of a signal parameter for a current site and for nearby sites, and performing 502 a comparison of the signal parameters to select the nearby site having the strongest signal parameter. A next step 504 includes defining a target maximum allowable noise rise for the selected nearby site. A next step 506 includes calculating an upper bound for at least one operating parameter in the current site. A next step 508 includes determining whether a maximum for the at least one operating parameter exceeds 510 the upper bound. A next step 514 includes constraining the at least one operating parameter to no more than the upper bound if the maximum for the at least one operating parameter exceeds the upper bound.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 9, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
  • Publication number: 20100165934
    Abstract: A method and Node B are disclosed for allocation of “sticky” resources in an Orthogonal Frequency Division Multiplexing communication system. The Node B comprises a scheduler that is configured to make a sticky resource allocation to a user equipment, determine that a transmit power level allocated for transmissions to the user equipment should be adjusted, determine whether the resources allocated to the user equipment comprise a Quadrature Phase Shift Keying (QPSK) modulation scheme, and in response to determining that the resources allocated to the user equipment comprise a QPSK modulation scheme, adjust the allocated transmit power level without informing the user equipment of the adjustment. The Node B further may condition the determination to adjust the allocated transmit power level without informing the UE of the adjustment based on a size of the adjustment.
    Type: Application
    Filed: June 4, 2009
    Publication date: July 1, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Mark T. Pflum
  • Publication number: 20100020781
    Abstract: A method, device and computer-readable storage element for dynamically changing a maximum access channel rate at a site in a communication system. The method includes setting a maximum access channel rate for an access channel at a site, which comprises a coverage area for a base station. The method further includes determining a first access probe success rate that measures a rate at which first attempt access probes sent from the terminals on the access channel are received, and changing the maximum access channel rate based on the first access probe success rate.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 28, 2010
    Applicant: MOTOROLA, INC.
    Inventors: DANIEL R. TAYLOE, CHIH-MING J. CHIANG, JONATHAN H. GROSS, MARK T. PFLUM
  • Publication number: 20090138614
    Abstract: A method and apparatus for streaming media content in a communication network (100) is provided. The method includes (304) receiving a request from a plurality of client devices at the content server (102). The method also includes (306) initializing the content server-streaming of the media content to the client device by using at least one of the low Quality of Service (QoS) flow and the high QoS flow.
    Type: Application
    Filed: November 28, 2007
    Publication date: May 28, 2009
    Applicant: MOTOROLA, INC.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
  • Patent number: 7505438
    Abstract: A CDMA system according to an embodiment of the invention employs a technique for power optimized user loading that obtains a desired allocation of different radio configuration calls. The technique takes advantage of the relatively low power requirements of RC3 calls for low load conditions, while increasing the number of RC4 calls for high load conditions. As the load increases, the percentage of RC4 calls increases while the percentage of RC3 calls decreases. The technique strives to minimize overall power consumption in the system for all call load conditions, by maximizing the number of RC3 calls at any given time while keeping Walsh code resources available for both new calls and hand-in traffic.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: March 17, 2009
    Assignee: Motorola, Inc.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Mark H. Kaya
  • Patent number: 7505439
    Abstract: A CDMA system according to an embodiment of the invention employs a technique for power optimized user loading that obtains a desired allocation of different radio configuration calls. The technique takes advantage of the relatively low power requirements of RC3 calls for low load conditions, while increasing the number of RC4 calls for high load conditions. As the load increases, the system determines a target combination of RC3 and RC4 calls based upon the current average power per link measurements for RC3 and RC4 calls, and based upon the power limitations of the system. The technique strives to maximize the capacity of the system while maintaining operation below the overall power limit.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: March 17, 2009
    Assignee: Motorola, Inc.
    Inventors: Chih-Ming J. Chiang, Daniel R. Tayloe, Mark H. Kaya
  • Publication number: 20080280606
    Abstract: A method and information processing system are provided for dynamically encoding a control channel for transmitting messages to a wireless device based on performance capability information associated with the wireless device. The method includes determining that a wireless device (104) has registered with a base station (116). A device profile (128) associated with the wireless device (116) is retrieved from a register (122). A set of performance capabilities associated with the wireless device is determined (408) in response to the retrieving. A coding type for a control channel for sending messages to the wireless device (104) is determined (410) based on the set of performance capabilities associated with the wireless device (104).
    Type: Application
    Filed: May 8, 2007
    Publication date: November 13, 2008
    Applicant: MOTOROLA, INC.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
  • Patent number: 7076265
    Abstract: A mobile unit 40 which is in a soft handoff condition 50 with a base station (32) has the power transmitted by the base station (32) on the mobile link (52) controlled. The base station (32) determines (70) when a frame erasure count reaches a particular level N. The base station then places this link in a clamped state (72) at minimum power. When the base station determines that M consecutive good frames have been received (92), the base station restores the link (52) to a normal state (94). A recovery arrangement (100, 110 and 120) prevents clamping by all base stations (32–34) and loss of the link.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: July 11, 2006
    Assignee: Motorola, Inc.
    Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Mark T. Pflum, Zaigham A. Kazmi
  • Patent number: 5660183
    Abstract: A diagnostic device for providing a prognosis of patient with an implanted cardiac device includes a data bank for storing statistical data relating various symptoms characterizing cardiac problems and associated complications. The device further includes an input device so that a clinician can enter patient specific data including his symptoms. A set of rules stored in a memory are used to provide a diagnosis for the patient based on the statistical data. Preferably the diagnostic device is incorporated in a programmer for a pacemaker or other implantable cardiac device.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: August 26, 1997
    Assignee: Telectronics Pacing Systems, Inc.
    Inventors: Chih-Ming J. Chiang, Alan D. Bernstein, Victor Parsonnet, Tibor Nappholz