Patents by Inventor Takahiro Matusaki

Takahiro Matusaki 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: 7948932
    Abstract: A radio communication apparatus (mobile station) in which analysis is performed on the transmission of data to an external apparatus. A mobile station transmitting the CQI information used for adaptive modulation control in the radio base station comprises a supervising unit operable to supervise a staying condition of data to be transmitted to an external apparatus, a CQI generating unit for generating the CQI information reflecting the result of a supervising process by the supervising unit, and a transmitting unit for transmitting the generated CQI information to the radio base station, and a mobile station for sending a re-transmission request reflecting the result of the supervising process.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: May 24, 2011
    Assignee: Fujitsu Limited
    Inventors: Syuuichi Murata, Akihide Otonari, Junichi Niimi, Takahiro Matusaki, Atsushi Tanaka, Yuka Araikawa
  • Patent number: 7907906
    Abstract: The present invention, focusing on the fact that sometimes the channel (HS-SCCH) which notifies that data is to be transmitted will be received but it will be misdetected that there was a notification addressed to the receiving station, is to effectively utilize the channel (HS-SCCH) via which notification is conducted even in cases where the reception result is transmitted repeatedly. An HSDPA-compatible mobile station which, upon detecting that a message addressed to that mobile station was transmitted via HS-SCCH, receives the corresponding HS-PDSCH sub-frame, and which, when transmitting the reception result, repeats the transmission of said reception result n times, said mobile station being characterized in that it comprises a control unit which provides control such that reception processing is performed on the second sub-frame that comes next after the first sub-frame of HS-SCCH on which said detection was performed.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: March 15, 2011
    Assignee: Fujitsu Limited
    Inventors: Syuuichi Murata, Akihide Otonari, Yuka Araikawa, Junichi Niimi, Atsushi Tanaka, Takahiro Matusaki
  • Patent number: 7783327
    Abstract: A mobile station receives a first datum and transmits a first reception result with a first timing when a first notification was received via a channel which notifies that data is to be transmitted, and receives a second datum and transmits a second reception result with a second timing when a second notification with a different timing was received via said channel, said mobile station being characterized in that it comprises: a repeat transmission unit which, upon receiving said first notification, transmits said first reception result with said first timing, and repeats the transmission with said second timing; and a control unit which imposes a restriction on the reception processing control of said second notification when said first notification has been received.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: August 24, 2010
    Assignee: Fujitsu Limited
    Inventors: Syuuichi Murata, Akihide Otonari, Yuka Araikawa, Junichi Niimi, Atsushi Tanaka, Takahiro Matusaki
  • Patent number: 7720504
    Abstract: To provide a radio communication apparatus and a mobile station sensitive to change in the radio environment. A mobile station corresponding to the HSDPA and transmitting the CQI information used for the adaptive modulation control executed by a radio base station, comprising a radio environment supervising unit for supervising change in the radio environment on the basis of the received signal from the radio base station, a CQI generating unit for generating the CQI information reflecting change in the reception quality from the radio base station in accordance with the result of supervising by the supervising unit, and a transmitting unit for transmitting the generated CQI information to the radio base station.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: May 18, 2010
    Assignee: Fujitsu Limited
    Inventors: Syuuichi Murata, Atsushi Tanaka, Junichi Niimi, Takahiro Matusaki, Akihide Otonari, Yuka Araikawa
  • Patent number: 7549102
    Abstract: A wireless communication device performs error correction decoding after combining newly received data from a new transmission of data and retransmitted received data from a retransmission of the data. The wireless communication device comprises a storage unit operable to store newly received data, a reception quality evaluation unit operable to evaluate reception quality for the retransmitted received data or reception quality for combined data obtained by combining the retransmitted received data with the newly received data stored in the storage unit, and a control unit operable to perform control as to whether to decode the retransmitted received data or the combined data according to the results of the evaluation.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: June 16, 2009
    Assignee: Fujitsu Limited
    Inventors: Syuuichi Murata, Atsushi Tanaka, Junichi Niimi, Takahiro Matusaki, Akihide Otonari, Yuka Araikawa, Kazuhisa Obuchi
  • Publication number: 20060120403
    Abstract: A radio communication apparatus (mobile station) in which analysis is performed on the transmission of data to an external apparatus. A mobile station transmitting the CQI information used for adaptive modulation control in the radio base station comprises a supervising unit operable to supervise a staying condition of data to be transmitted to an external apparatus, a CQI generating unit for generating the CQI information reflecting the result of a supervising process by the supervising unit, and a transmitting unit for transmitting the generated CQI information to the radio base station, and a mobile station for sending a re-transmission request reflecting the result of the supervising process.
    Type: Application
    Filed: May 17, 2005
    Publication date: June 8, 2006
    Inventors: Syuuichi Murata, Akihide Otonari, Jyunichi Niimi, Takahiro Matusaki, Atsushi Tanaka, Yuka Araikawa
  • Publication number: 20060111100
    Abstract: To provide a radio communication apparatus and a mobile station sensitive to change in the radio environment. A mobile station corresponding to the HSDPA and transmitting the CQI information used for the adaptive modulation control executed by a radio base station, comprising a radio environment supervising unit for supervising change in the radio environment on the basis of the received signal from the radio base station, a CQI generating unit for generating the CQI information reflecting change in the reception quality from the radio base station in accordance with the result of supervising by the supervising unit, and a transmitting unit for transmitting the generated CQI information to the radio base station.
    Type: Application
    Filed: April 18, 2005
    Publication date: May 25, 2006
    Inventors: Syuuichi Murata, Atsushi Tanaka, Junichi Niimi, Takahiro Matusaki, Akihide Otonari, Yuka Araikawa
  • Publication number: 20060107165
    Abstract: A wireless communication device performs error correction decoding after combining newly received data from a new transmission of data and retransmitted received data from a retransmission of the data. The wireless communication device comprises a storage unit operable to store newly received data, a reception quality evaluation unit operable to evaluate reception quality for the retransmitted received data or reception quality for combined data obtained by combining the retransmitted received data with the newly received data stored in the storage unit, and a control unit operable to perform control as to whether to decode the retransmitted received data or the combined data according to the results of the evaluation.
    Type: Application
    Filed: June 21, 2005
    Publication date: May 18, 2006
    Inventors: Syuuichi Murata, Atsushi Tanaka, Junichi Niimi, Takahiro Matusaki, Akihide Otonari, Yuka Araikawa, Kazuhisa Obuchi
  • Publication number: 20060035594
    Abstract: The present invention, focusing on the fact that sometimes the channel (HS-SCCH) which notifies that data is to be transmitted will be received but it will be misdetected that there was a notification addressed to the receiving station, is to effectively utilize the channel (HS-SCCH) via which notification is conducted even in cases where the reception result is transmitted repeatedly. An HSDPA-compatible mobile station which, upon detecting that a message addressed to that mobile station was transmitted via HS-SCCH, receives the corresponding HS-PDSCH sub-frame, and which, when transmitting the reception result, repeats the transmission of said reception result n times, said mobile station being characterized in that it comprises a control unit which provides control such that reception processing is performed on the second sub-frame that comes next after the first sub-frame of HS-SCCH on which said detection was performed.
    Type: Application
    Filed: June 7, 2005
    Publication date: February 16, 2006
    Inventors: Syuuichi Murata, Akihide Otonari, Yuka Araikawa, Junichi Niimi, Atsushi Tanaka, Takahiro Matusaki
  • Publication number: 20060035664
    Abstract: A mobile station receives a first datum and transmits a first reception result with a first timing when a first notification was received via a channel which notifies that data is to be transmitted, and receives a second datum and transmits a second reception result with a second timing when a second notification with a different timing was received via said channel, said mobile station being characterized in that it comprises: a repeat transmission unit which, upon receiving said first notification, transmits said first reception result with said first timing, and repeats the transmission with said second timing; and a control unit which imposes a restriction on the reception processing control of said second notification when said first notification has been received.
    Type: Application
    Filed: June 7, 2005
    Publication date: February 16, 2006
    Inventors: Syuuichi Murata, Akihide Otonari, Yuka Araikawa, Junichi Niimi, Atsushi Tanaka, Takahiro Matusaki