Patents by Inventor Steven Tsan-Ying Yuen

Steven Tsan-Ying Yuen 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).

  • Method for handling a call establishment request during location management in 3G wireless networks
    Patent number: 7171204
    Abstract: A method of handling call establishment requests when a MS moves from one Serving Radio Network Controller (SRNC) to another SRNC in a 3G wireless network, such as a UMTS network. If SRNC Relocation is being prepared, an Iu connection request and Paging request received by the SRNC are suspended and stored in a buffer. If the Relocation procedure completes successfully, the messages are discarded. If the Relocation procedure fails or is cancelled, the messages are processed normally. However, if SRNC Relocation has already been triggered, all call establishment messages (except Direct Transfer Messages) received by the SRNC are ignored. Other post Iu connection messages received by the SRNC are processed instead of potentially being ignored.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: January 30, 2007
    Assignee: Motorola, Inc.
    Inventor: Steven Tsan-Ying Yuen
  • Method for handling a call establishment request during location management in3G wireless networks
    Publication number: 20030073437
    Abstract: A method of handling call establishment requests when a MS moves from one Serving Radio Network Controller (SRNC) to another SRNC in a 3G wireless network, such as a UMTS network. If SRNC Relocation is being prepared, an Iu connection request and Paging request received by the SRNC are suspended and stored in a buffer. If the Relocation procedure completes successfully, the messages are discarded. If the Relocation procedure fails or is cancelled, the messages are processed normally. However, if SRNC Relocation has already been triggered, all call establishment messages (except Direct Transfer Messages) received by the SRNC are ignored. Other post Iu connection messages received by the SRNC are processed instead of potentially being ignored.
    Type: Application
    Filed: September 26, 2002
    Publication date: April 17, 2003
    Inventor: Steven Tsan-Ying Yuen