Patents by Inventor Shiro Kadoshima

Shiro Kadoshima 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: 6526282
    Abstract: A method and apparatus for controlling the restriction on traffic in a mobile communication system enabling an efficient mobile communication system with little wasted processing, wherein the apparatus for controlling the restriction on traffic includes a report unit provided in a mobile communication switching center for reporting a processing state indicating a congested state or a normal state to a management center in advance; a management unit provided in the management center for managing the processing states of each mobile communication switching center based on the reports of the processing states; a notifying unit provided in the management center for investigating by the management unit the processing state of a destination mobile communication switching center in response to a request, from a gateway mobile switching center, for a location of a destination to be connected to a call and notifying the gateway mobile switching center that the processing state is a congested state when in a congested
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: February 25, 2003
    Assignee: Fujitsu Limited
    Inventors: Shiro Kadoshima, Takayuki Iseyama, Masaru Ebina
  • Patent number: 6223038
    Abstract: The location information can be rapidly restored in a home location register HLR and occurrence of abnormal traffic at the time of restoring the contents of the home location register can be prevented. A location registration request to the base stations located in the location registration area associated with the home location register is issued when the location information stored in the register should be restored. The base stations receive the location registration request, and send the broadcast information including location registration executing request information. The mobile stations execute the location registration process upon receipt of the location registration executing request. In this case, the mobile stations are arranged in a plurality of groups in order to avoid a situation in which a large number of mobile stations concurrently execute the location registration process. The location registration process is executed for each group at respective, different timings in order.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: April 24, 2001
    Assignee: Fujitsu Limited
    Inventors: Takayuki Iseyama, Shiro Kadoshima