Patents by Inventor Yuan-Joshua Zhu

Yuan-Joshua Zhu 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: 8401041
    Abstract: The present invention relates to a method, apparatus, system and computer program product, wherein a time division multiplex signal is received with a periodic first time period allocated to a downlink transmissions and a periodic second time period allocated to uplink transmissions. A decision time metric is obtained by correlating the received signal with a replica signal in order to detect a synchronization pattern provided in the first time period. Then, a slide window based normalization with a time window long enough to accommodate said second time period is applied to the decision time metric.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: March 19, 2013
    Assignee: Nokia Corporation
    Inventors: Chunye Wang, Yuan Joshua Zhu
  • Patent number: 7936664
    Abstract: A method is provided for facilitating efficient usage of radio capacity in a radio communication system including a communication station operable to receive, over a plurality of subchannels of the radio communication system. In this regard, the packet-formatted data has an overall sequence, and is divided into a plurality of portions receivable by the communication station over respective subchannels, where each portion has a respective link sequence. The method includes detecting missing packet-formatted data at the communication station based upon the overall sequence or at least one of the link sequences. Then, when the missing packet-formatted data is detected based upon the overall sequence, a time period is timed, and when the communication station fails to receive the missing packet-formatted data before the step of timing times out, retransmission of the missing packet-formatted data is requested.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: May 3, 2011
    Assignee: Nokia Corporation
    Inventors: Yuan-Joshua Zhu, Adele Gao, Mark W. Cheng, Zhi-Chun Honkasalo
  • Publication number: 20090103507
    Abstract: A method determines whether information corresponding to one of a number of carriers indicates the one carrier is loaded or unloaded, wherein the carriers are used for transmission of a MAC flow by the access terminal over a reverse link. Responsively, the transmission resource allocation corresponding to the MAC flow for the one carrier is adjusted based on information corresponding to carrier loading for each of the carriers and on information corresponding to reverse link pilot power for each of the carriers. An access terminal includes a function that determines whether the one is loaded or unloaded. Responsively, the function adjusts transmission resource allocation for the MAC flow for the one carrier based on information of carrier loading for each of the carriers and on information of reverse link pilot power for each of the carriers.
    Type: Application
    Filed: May 3, 2006
    Publication date: April 23, 2009
    Inventors: Jian Gu, Yuan-Joshua Zhu
  • Publication number: 20080219191
    Abstract: The present invention relates to a method, apparatus, system and computer program product, wherein a time division multiplex signal is received with a periodic first time period allocated to a downlink transmissions and a periodic second time period allocated to uplink transmissions. A decision time metric is obtained by correlating the received signal with a replica signal in order to detect a synchronization pattern provided in the first time period. Then, a slide window based normalization with a time window long enough to accommodate said second time period is applied to the decision time metric.
    Type: Application
    Filed: February 8, 2008
    Publication date: September 11, 2008
    Applicant: Nokia Corporation
    Inventors: Chunye WANG, Yuan Joshua Zhu
  • Publication number: 20060282740
    Abstract: A method includes generating a plurality of ACK channels, spreading each of the plurality of ACK channels with a separate one of a plurality of Walsh cover codes, combining each of the plurality of ACK channels, and applying a Walsh cover code to the combined plurality of ACK channels.
    Type: Application
    Filed: May 4, 2006
    Publication date: December 14, 2006
    Inventors: Jian Gu, Yuan-Joshua Zhu
  • Publication number: 20060187870
    Abstract: A method is provided for facilitating efficient usage of radio capacity in a radio communication system including a communication station operable to receive, over a plurality of subchannels of the radio communication system. In this regard, the packet-formatted data has an overall sequence, and is divided into a plurality of portions receivable by the communication station over respective subchannels, where each portion has a respective link sequence. The method includes detecting missing packet-formatted data at the communication station based upon the overall sequence or at least one of the link sequences. Then, when the missing packet-formatted data is detected based upon the overall sequence, a time period is timed, and when the communication station fails to receive the missing packet-formatted data before the step of timing times out, retransmission of the missing packet-formatted data is requested.
    Type: Application
    Filed: April 7, 2006
    Publication date: August 24, 2006
    Applicant: Nokia Corporation
    Inventors: Yuan-Joshua Zhu, Adele Gao, Mark Cheng, Zhi-Chun Honkasalo