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).
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Patent number: 8503324Abstract: 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: GrantFiled: September 22, 2011Date of Patent: August 6, 2013Assignee: Motorola Mobility LLCInventors: Daniel R. Tayloe, Chih-Ming J. Chiang
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Patent number: 8504082Abstract: 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: GrantFiled: May 8, 2007Date of Patent: August 6, 2013Assignee: Motorola Mobility LLCInventors: Daniel R. Tayloe, Chih-Ming J. Chiang
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Patent number: 8223707Abstract: 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: GrantFiled: June 4, 2009Date of Patent: July 17, 2012Assignee: Motorola Mobility, Inc.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Mark T. Pflum
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Publication number: 20120008597Abstract: 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: ApplicationFiled: September 22, 2011Publication date: January 12, 2012Applicant: MOTOROLA MOBILITY, INC.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
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Patent number: 8054808Abstract: 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: GrantFiled: March 6, 2009Date of Patent: November 8, 2011Assignee: Motorola Mobility, Inc.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
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Patent number: 8050189Abstract: 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: GrantFiled: July 22, 2008Date of Patent: November 1, 2011Assignee: Motorola Mobility, Inc.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Jonathan H. Gross, Mark T. Pflum
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Publication number: 20100226340Abstract: 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: ApplicationFiled: March 6, 2009Publication date: September 9, 2010Applicant: MOTOROLA, INC.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
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Publication number: 20100165934Abstract: 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: ApplicationFiled: June 4, 2009Publication date: July 1, 2010Applicant: MOTOROLA, INC.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Mark T. Pflum
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Publication number: 20100020781Abstract: 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: ApplicationFiled: July 22, 2008Publication date: January 28, 2010Applicant: MOTOROLA, INC.Inventors: DANIEL R. TAYLOE, CHIH-MING J. CHIANG, JONATHAN H. GROSS, MARK T. PFLUM
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Publication number: 20090138614Abstract: 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: ApplicationFiled: November 28, 2007Publication date: May 28, 2009Applicant: MOTOROLA, INC.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
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Patent number: 7505438Abstract: 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: GrantFiled: November 2, 2004Date of Patent: March 17, 2009Assignee: Motorola, Inc.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Mark H. Kaya
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Patent number: 7505439Abstract: 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: GrantFiled: December 29, 2004Date of Patent: March 17, 2009Assignee: Motorola, Inc.Inventors: Chih-Ming J. Chiang, Daniel R. Tayloe, Mark H. Kaya
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Publication number: 20080280606Abstract: 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: ApplicationFiled: May 8, 2007Publication date: November 13, 2008Applicant: MOTOROLA, INC.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang
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Patent number: 7076265Abstract: 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: GrantFiled: September 26, 2003Date of Patent: July 11, 2006Assignee: Motorola, Inc.Inventors: Daniel R. Tayloe, Chih-Ming J. Chiang, Mark T. Pflum, Zaigham A. Kazmi
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Patent number: 5660183Abstract: 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: GrantFiled: August 16, 1995Date of Patent: August 26, 1997Assignee: Telectronics Pacing Systems, Inc.Inventors: Chih-Ming J. Chiang, Alan D. Bernstein, Victor Parsonnet, Tibor Nappholz