Patents by Inventor Cha Ng

Cha Ng 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).

  • Mobile Terminal Managing Device, Mobile Terminal, and Communication System
    Publication number: 20080069030
    Abstract: A method where home agents dynamically communicate their availability to serve as alternate home agents to each other, and a technology where the registered home agent proactively informs the mobile node to switch home agents are disclosed. According to the technique, a home agent (1000) has new functional blocks to detect the presence of an affiliated roaming mobile node and proceeds to advise the designated home agent of the mobile node regarding their availability. When the registered home agent decides to handover a mobile node, the available alternate home agents are sorted according to the metric of hop count distance and the highest valued is selected so that an available alternate home agent is assigned. A specially formatted mobility option is sent to the mobile node in order to direct it to register to the newly selected alternate home agent.
    Type: Application
    Filed: May 25, 2005
    Publication date: March 20, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Jun Hirano, Tien-Ming Koh, Cha Ng, Pek Tan