Patents by Inventor Atsushi Shinozaki

Atsushi Shinozaki 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: 8135428
    Abstract: A transmission power control target value calculating apparatus that calculates target values, which are used for transmission power control of radio waves sent through radio transmission paths, comprises: a first target value calculating section that calculates a first transmission power control target value based on quality of combined data which is obtained by combining data obtained through the radio transmission paths; and a second target value calculating section that determines a second transmission power control target value to be applied to at least one of the radio transmission paths, based on the first transmission power control target value and quality information of each of the radio transmission paths.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: March 13, 2012
    Assignee: Fujitsu Limited
    Inventor: Atsushi Shinozaki
  • Publication number: 20120014298
    Abstract: Packets are transmitted from an apparatus to another apparatus via a plurality of carrier waves. The apparatus calculates, for each of the plurality of carrier waves, a tolerance parameter indicating a tolerable margin of the current line-quality value for causing a change of a modulation method to be used, based on a line-quality value received from the another apparatus, and allocates packets to the plurality of carrier waves based on a service-quality level assigned to each of the packets and the tolerance parameter calculated for each of the plurality of carrier waves, such that a first packet having the service-quality level equal to or higher than a second packet is allocated, on a priority basis, to a first carrier wave having the tolerance parameter equal to or larger than a second carrier wave to which the second packet is allocated.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 19, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Hiroyuki WACHI, Atsushi SHINOZAKI
  • Patent number: 8081977
    Abstract: A mobile communication network comprising a plurality of base stations and a plurality of mobile machines, the unit for supplying particular location information assigned to a predetermined particular area in advance to the mobile machines moving in the particular area and the mobile machines conduct location registration to the base station side by using the particular location information at a time when the mobile machine enters in the particular area, thereby, increase of load on a network and of power consumption, and quality deteriorations of transmission paths, due to location registration when many users carrying the mobile machines move on a train or the like can be prevented.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: December 20, 2011
    Assignee: Fujitsu Limited
    Inventor: Atsushi Shinozaki
  • Patent number: 8055214
    Abstract: At a transmitting end, information data, which is data to be transmitted, is copied via a number of wireless transmission paths and then encoded. Each piece of data is then subjected to a respective different pattern of puncturing process and transmitted to a receiving end via a respective wireless transmission path. At the receiving end, dummy data is embedded into the punctured data and decoded. The puncture patterns at the transmitting end for the respective different wireless transmission paths are prepared such that they are different from each other. In particular, the bits to be removed are preferably different from each other between the different puncture patters. At the receiving end, if the decoding of the data for any wireless transmission path has failed, the data obtained from other wireless transmission paths are combined and decoded. In this way, the probability of a decoding failure occurring can be lowered.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: November 8, 2011
    Assignee: Fujitsu Limited
    Inventor: Atsushi Shinozaki
  • Publication number: 20110252149
    Abstract: A proxy response apparatus, including: a storage unit which establishes connection with a mobile terminal by TCP and stores message information included in a packet obtained from the mobile terminal; a response processing unit which receives a packet from an external apparatus, and responds whether message information included in the receive packet is effective or not to the message information stored in the storage unit; and a TCP processing unit which transmits a packet including a response message to the external apparatus without establishing radio connection with the mobile terminal, when the TCP processing unit inputs the response indicating effective from the response processing unit.
    Type: Application
    Filed: June 21, 2011
    Publication date: October 13, 2011
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi SHINOZAKI
  • Patent number: 8023514
    Abstract: A communication resource management device changes the transfer rate of a first control channel related to a first mobile terminal according to a communication condition. The device determines whether there is a frequency band for which it is not determined whether the frequency band is to be used in a predetermined time period based on a current transfer rate of a second control channel related to a second mobile terminal and an amount of data to be transmitted in the second control channel; and allocates, to the first mobile terminal, at least a part of the frequency band for the second control channel with respect to the second mobile terminal in a predetermined period of time. The device changes the transfer rate in the first control channel while maintaining the total frequency band for plural control channels related to plural mobile terminals at a constant value.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: September 20, 2011
    Assignee: Fujitsu Limited
    Inventor: Atsushi Shinozaki
  • Publication number: 20110173074
    Abstract: An advertisement managing device selectively notifies advertisement-related data to one or more wireless stations on the basis of location information of the wireless stations. Each wireless station attaches the notified advertisement-related data to the contents received from a contents providing device and destined for a user equipment, and sends the resultant data to the user equipment. The wireless station counts the number of times of the attaching and notifies the result of the counting to the advertisement managing device.
    Type: Application
    Filed: March 22, 2011
    Publication date: July 14, 2011
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi SHINOZAKI
  • Patent number: 7890103
    Abstract: A mobile station used in a mobile communication system which accepts location registrations from mobile stations in order to perform mobile station location management, the mobile station being comprising a detection unit which detects that it is in an overlap region of hierarchical location registration areas; and a delay unit which delays location registration when the detection has been made.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: February 15, 2011
    Assignee: Fujitsu Limited
    Inventor: Atsushi Shinozaki
  • Patent number: 7881719
    Abstract: At the time of carrying out a DHO, a DHO execution unit encodes data to be transmitted and interleaves it, followed by dividing it into segment data and sending out from respective transmission paths. When receiving data, the unit receives pieces of segment data from the respective transmission paths, combines them together, de-interleaves them and receives data by decoding it. When dividing into segment data, it allocates segment data with larger amount of data to a transmission path with a high transmission quality, and that with smaller amount of data to a transmission path with a low transmission quality, in accordance with the transmission quality.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: February 1, 2011
    Assignee: Fujitsu Limited
    Inventor: Atsushi Shinozaki
  • Publication number: 20100257355
    Abstract: An encryption execution control system comprises a first encrypting unit to execute encryption of a communication in a first zone between a terminal device and a first relay device, a second encrypting unit to execute the encryption of a communication in a second zone embracing the first zone, the second zone extending from the terminal device via the first relay device to a second relay device; and a control unit to control the first encrypting unit so that the encryption in the first zone is not executed when executing the encryption in the second zone.
    Type: Application
    Filed: June 18, 2010
    Publication date: October 7, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi SHINOZAKI
  • Publication number: 20100238982
    Abstract: A relay apparatus, comprises a reception section that receives real-time data, a monitoring section that periodically detects quality of a transmission path to be used for transmitting the real-time data toward a destination thereof, a determination section that determines a length of an interleaving cycle according to the quality of the transmission path, an interleaving section that interleaves the real-time data in the interleaving cycle having the determined length, and a transmission section that transmits the interleaved real-time data to the transmission path.
    Type: Application
    Filed: June 3, 2010
    Publication date: September 23, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi SHINOZAKI
  • Patent number: 7801563
    Abstract: The radio base station apparatus comprises: a plurality of antenna elements for transmitting and receiving radio signals; a detection unit for detecting information about an uplink dedicated channel corresponding to a first user equipment from signals received via the plurality of antenna elements; a directivity control unit for determining directivity of transmission power based on the information detected by the detection unit when signals are transmitted to the first user equipment via the downlink shared channel; and a transmission unit for transmitting signals with the directivity determined by the directivity control unit.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: September 21, 2010
    Assignee: Fujitsu Limited
    Inventors: Masayuki Hara, Atsushi Shinozaki
  • Publication number: 20100178951
    Abstract: A mobile communication system includes a detecting unit that detects whether or not a first mobile terminal meets a predetermined requirement and a radio communication controller that provides, when the detecting unit detects the first mobile terminal as meeting the predetermined requirement, a predetermined radio communications service to the first mobile terminal, wherein when the detecting unit detects the first mobile terminal as meeting the predetermined requirements, the radio communications controller provides a predetermined radio communications service to a second mobile terminal different from the first mobile terminal.
    Type: Application
    Filed: December 23, 2009
    Publication date: July 15, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Takeshi NISHIDOI, Atsushi SHINOZAKI
  • Publication number: 20100151868
    Abstract: A communication apparatus which performs radio communication with a mobile terminal which is able to originate a call by using either a first or a second phone number as a caller source number, includes a radio interface unit which performs radio communication with the mobile terminal, and a transfer unit. When the radio communication unit receives a first call using the first phone number from the mobile terminal, the transfer unit transfers the first call from the mobile terminal to a first communication network corresponding to the first phone number to perform connection processing to a destination device. When the radio communication unit receives a second call using the second phone number from the mobile terminal, the transfer unit transfers the second call from the mobile terminal to a second communication network corresponding to the second phone number to perform the connection processing to a destination device.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 17, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi SHINOZAKI
  • Publication number: 20100118791
    Abstract: When a downlink transmission is performed in the handover state in a mobile communication system having a mobile station, base stations and a base station controller, user data from the base station controller is transmitted from a first base station to the mobile station and error correction code for the user data from the base station controller is transmitted from a second base station to the mobile station. The mobile station subjects the received user data to error correction processing using the received error correction code and decodes the user data. Also, at the time of an uplink transmission in the handover state, user data and error correction code are transmitted from the mobile station to the base station controller via separate transmission paths.
    Type: Application
    Filed: January 21, 2010
    Publication date: May 13, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi Shinozaki
  • Publication number: 20100097979
    Abstract: Feedback information including a transmission quality of a packet transmitted from a transmitting device to a receiving device is received from the receiving device and the transmission quality included in the feedback information is revised down, to be transferred to the transmitting device, based on information of resource consumed for maintaining a wireless link included in a path to the receiving device. The above revising down is executed if it is found that the information of resource consumed reaches a predetermined threshold or is not executed unless it is found otherwise. The information of resource includes, for example, the number of retransmission times of a packet for a predetermined period of time, a transmission power level or a code length of an error correcting code.
    Type: Application
    Filed: December 23, 2009
    Publication date: April 22, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi SHINOZAKI
  • Publication number: 20100067430
    Abstract: A relay apparatus for relaying data transmitted and received between a transmitting station and a receiving station, including a discarding decision unit which measures a transmission delay amount in the receiving station on the basis of the feedback information from the receiving station, decides a discarding amount of the data based on the transmission delay amount for a session the transmission delay amount of which exceeds a threshold value, and discards data in the discarding amount among the data stored in a buffer.
    Type: Application
    Filed: November 16, 2009
    Publication date: March 18, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi Shinozaki
  • Publication number: 20100067411
    Abstract: A wireless access method includes connecting a wireless base station and a plurality of wireless terminals using a first communication carrier and a second communication carrier in a hybrid-duplex manner; allocating uplink data of a real-time service to the first communication carrier; allocating uplink data of a non-real-time service to the second communication carrier; allocating downlink data of the real-time service to one of the first communication carrier and the second communication carrier; and allocating downlink data of the non-real-time service to the first and second communication carriers.
    Type: Application
    Filed: November 23, 2009
    Publication date: March 18, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi SHINOZAKI
  • Patent number: 7676227
    Abstract: When a downlink transmission is performed in the handover state in a mobile communication system having a mobile station, base stations and a base station controller, user data from the base station controller is transmitted from a first base station to the mobile station and error correction code for the user data from the base station controller is transmitted from a second base station to the mobile station. The mobile station subjects the received user data to error correction processing using the received error correction code and decodes the user data. Also, at the time of an uplink transmission in the handover state, user data and error correction code are transmitted from the mobile station to the base station controller via separate transmission paths.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: March 9, 2010
    Assignee: Fujitsu Limited
    Inventor: Atsushi Shinozaki
  • Publication number: 20100054270
    Abstract: A buffer temporarily stores data received from a network by a receiving unit. An output mode switching unit switches the mode in which the data received by the receiving unit is output to the buffer, between FIFO and FILO, in accordance with the storage amount of data temporarily stored in the buffer. For example, if the data temporarily stored in the buffer falls below a given threshold value of the buffer, data is stored in the buffer in FIFO. If the data temporarily stored in the buffer exceeds a given threshold value of the buffer, data is stored in the buffer in FILO. A sending unit outputs data taken from the buffer in FIFO or FILO, to a network.
    Type: Application
    Filed: November 6, 2009
    Publication date: March 4, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Atsushi Shinozaki