Patents by Inventor Keiichiro Samejima

Keiichiro Samejima 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: 9973948
    Abstract: The mobile terminal testing apparatus including: a cell state determination unit 16 that determines in-use states of multiple cells which perform communication with a mobile communication terminal 2; a cell state change processing unit 17 that changes states of the multiple cells and notifies the cell state determination unit 16 of the states of the multiple cells; and a scenario processing unit 15 that detects the number of cells that need to be added and the number of cells that are available for deletion, based on a message that is transmitted and received between the mobile terminal testing apparatus and the mobile communication terminal 2, and that causes the cell state change processing unit 17 to perform initialization of a cell that is available for deletion, and sets the cell to be available for re-use.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: May 15, 2018
    Assignee: ANRITSU CORPORATION
    Inventors: Satoshi Wakasa, Keiichiro Samejima, Takayuki Koguchi
  • Patent number: 9485682
    Abstract: A mobile terminal testing apparatus that is capable of simulating a state where an electric wave to multiple mobile communication terminals causes interference. The mobile terminal testing apparatus includes: a scenario processing unit that controls each unit of an apparatus in order to perform each procedure for testing according to a test scenario; a cell initialization processing unit that initializes a cell that is subject to interference and an interfering cell that interferes with the cell that is subject to the interference, with a parameter for the cell that is subject to the interference, and a parameter for the interfering cell; and a cell combination processing unit that adjusts output levels of a signal of the cell that is subject to the interference and a signal of the interfering cell and performs combination in order to simulate an interference state.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: November 1, 2016
    Assignee: ANRITSU CORPORATION
    Inventors: Keiichiro Samejima, Satoshi Wakasa, Takayuki Koguchi
  • Publication number: 20160286422
    Abstract: A mobile terminal testing apparatus that is capable of simulating a state where an electric wave to multiple mobile communication terminals causes interference. The mobile terminal testing apparatus includes: a scenario processing unit that controls each unit of an apparatus in order to perform each procedure for testing according to a test scenario; a cell initialization processing unit that initializes a cell that is subject to interference and an interfering cell that interferes with the cell that is subject to the interference, with a parameter for the cell that is subject to the interference, and a parameter for the interfering cell; and a cell combination processing unit that adjusts output levels of a signal of the cell that is subject to the interference and a signal of the interfering cell and performs combination in order to simulate an interference state.
    Type: Application
    Filed: February 22, 2016
    Publication date: September 29, 2016
    Inventors: Keiichiro Samejima, Satoshi Wakasa, Takayuki Koguchi
  • Publication number: 20160277949
    Abstract: The mobile terminal testing apparatus including: a cell state determination unit 16 that determines in-use states of multiple cells which perform communication with a mobile communication terminal 2; a cell state change processing unit 17 that changes states of the multiple cells and notifies the cell state determination unit 16 of the states of the multiple cells; and a scenario processing unit 15 that detects the number of cells that need to be added and the number of cells that are available for deletion, based on a message that is transmitted and received between the mobile terminal testing apparatus and the mobile communication terminal 2, and that causes the cell state change processing unit 17 to perform initialization of a cell that is available for deletion, and sets the cell to be available for re-use.
    Type: Application
    Filed: November 24, 2015
    Publication date: September 22, 2016
    Inventors: Satoshi Wakasa, Keiichiro Samejima, Takayuki Koguchi