Patents by Inventor Yu-Chen Jou

Yu-Chen Jou 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: 8995417
    Abstract: Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: March 31, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Yu-Chen Jou, Peter J. Black, Rashid Ahmed A. Attar
  • Publication number: 20090304024
    Abstract: Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided.
    Type: Application
    Filed: April 15, 2009
    Publication date: December 10, 2009
    Applicant: QUALCOMM Incorporated
    Inventors: Yu-Chen Jou, Peter J. Black, Rashid Ahmed A. Attar
  • Patent number: 7519044
    Abstract: A channel structure for use in communication systems. Two sets of physical channels, one for the forward link and another for the reverse link, are utilized to facilitate communication of a variety of logical channels. The physical channels comprise data and control channels. In the exemplary embodiment, the data channels comprise fundamental channels which are used to transmit voice traffic, data traffic, high speed data, and other overhead information and supplemental channels which are used to transmit high speed data. The fundamental channels can be released when the remote stations are idle to more fully utilized the available capacity. The control channels are used to transmit paging and control messages and scheduling information.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: April 14, 2009
    Assignee: QUALCOMM Incorporated
    Inventors: Ramin Rezaiifar, Yu-Chen Jou, Edward G. Tiedeman, Jr.
  • Publication number: 20010036831
    Abstract: A channel structure for use in communication systems. Two sets of physical channels, one for the forward link and another for the reverse link, are utilized to facilitate communication of a variety of logical channels. The physical channels comprise data and control channels. The data channels comprise fundamental channels which are used to transmit voice traffic, data traffic, high speed data, and other overhead information, and supplemental channels which are used to transmit high speed data. In response to a power measurement report, a base station can send a control channel frame on a control channel to identify a modified set of base station channels from which a remote station is to receive supplemental channels. The code channels corresponding to the supplemental channels are transmitted to remote station via signaling messages.
    Type: Application
    Filed: May 30, 2001
    Publication date: November 1, 2001
    Inventors: Ramin Rezaiifar, Yu-Chen Jou
  • Patent number: 5991284
    Abstract: Independently controlling the transmitted power of each subchannel by a subchannel control loop is described. A transmitting station generates a channel made up of a sum of subchannels wherein each subchannel or group of subchannels is amplified with a unique gain value that is varied in accordance with subchannel power control messages from the receiving station. The receiving station generates each subchannel power control message subsequent to monitoring and calculating metrics based on that received subchannel.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: November 23, 1999
    Assignee: Qualcomm Inc.
    Inventors: Serge Willenegger, Yu-Chen Jou