Patents by Inventor Hiromu Niiyama

Hiromu Niiyama 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 station transfer control system, cell transfer control method, mobile station, cell transfer control method at mobile station, cell transfer control program, control apparatus, and allocating method of communication resources
    Patent number: 7039413
    Abstract: While a plurality of cellular mobile communication systems have their respective service areas regionally overlapping each other in part, a mobile station is configured to perform a standby for calling or communication while selecting one of the plural systems in the overlapping areas, and is arranged as follows: the mobile station preliminarily stores cell information notified of by a base station and indicating whether the mobile station is transferable to each surrounding cell while maintaining the current system; when the arrival of transfer timing to a surrounding cell is detected, the mobile station extracts the information about the pertinent cell and judges whether the surrounding cell is a transferable cell, based on the cell information; when the surrounding cell is a transferable cell, the mobile station transfers to the surrounding cell; when the surrounding cell is not a transferable cell, the mobile station directly transfers to a cell of a different system.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: May 2, 2006
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masafumi Masuda, Akihiro Maebara, Hidetoshi Yazaki, Hiromu Niiyama, Takashi Nagano
  • Mobile station transfer control system, cell transfer control method, mobile station, cell transfer control method at mobile station, cell transfer control program, control apparatus, and allocating method of communication resources
    Publication number: 20030087637
    Abstract: While a plurality of cellular mobile communication systems have their respective service areas regionally overlapping each other in part, a mobile station is configured to perform a standby for calling or communication while selecting one of the plural systems in the overlapping areas, and is arranged as follows: the mobile station preliminarily stores cell information notified of by a base station and indicating whether the mobile station is transferable to each surrounding cell while maintaining the current system; when the arrival of transfer timing to a surrounding cell is detected, the mobile station extracts the information about the pertinent cell and judges whether the surrounding cell is a transferable cell, based on the cell information; when the surrounding cell is a transferable cell, the mobile station transfers to the surrounding cell; when the surrounding cell is not a transferable cell, the mobile station directly transfers to a cell of a different system.
    Type: Application
    Filed: October 23, 2002
    Publication date: May 8, 2003
    Applicant: NTT DoCoMo, Inc.
    Inventors: Masafumi Masuda, Akihiro Maebara, Hidetoshi Yazaki, Hiromu Niiyama, Takashi Nagano