Patents by Inventor Tsuyoshi Shimomura

Tsuyoshi Shimomura 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).

  • Publication number: 20190182830
    Abstract: A base station apparatus includes: first processor circuitry that generates a first signal indicating first candidates for a transmission timing, wherein the first candidates are selected from a second candidates; second processor circuitry that generates a second signal specifying one transmission timing from the first candidates for the transmission timing indicated by the first signal; and a transmitter that transmits the first signal and the second signal.
    Type: Application
    Filed: February 13, 2019
    Publication date: June 13, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Hongyang CHEN, Jianming Wu, Tsuyoshi Shimomura
  • Publication number: 20190158230
    Abstract: A base station device includes: a transmitter configured to transmit a transport block that includes a plurality of code block groups; and a receiver configured to receive a confirmation signal which indicates that one or more code block groups of the plurality of code block groups has not been successfully received. The transmitter configured to transmit a control signal. The control signal comprises a first information indicates the one or more code block groups to be retransmitted and a second information bit indicates either the one or more code block groups being retransmitted are combinable with the received one or more code block groups or the received one or more code block groups corresponding to the one or more code block groups being retransmitted is corrupted.
    Type: Application
    Filed: January 14, 2019
    Publication date: May 23, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Hongyang CHEN, Jianming Wu, Tsuyoshi Shimomura
  • Publication number: 20190159183
    Abstract: A base station to be used in a communication system in which an uplink and a downlink are time-multiplexed, includes: a controller configured to set a first time period and a second time period in a single frequency block among multiple frequency blocks included in the uplink or the downlink and set symbol lengths or cyclic prefixes for the set first and second time periods so that the symbol lengths or cyclic prefixes set for the first time period are different from the symbol lengths or cyclic prefixes set for the second time period; and a transmitter configured to transmit setting information of the set symbol lengths or the set cyclic prefixes to the user equipment.
    Type: Application
    Filed: January 23, 2019
    Publication date: May 23, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Tsuyoshi Shimomura, Jianming Wu, YOSHINORI TANAKA
  • Publication number: 20190150131
    Abstract: A base station device communicates with a user equipment by using a frame including a downlink region in which a signal for a downlink is allocated and an uplink region in which a signal for an uplink is allocated. The base station device includes: a guard period determination unit, a frame configuration determination unit, a notification unit, and a communication circuit. The guard period determination unit determines a length of a guard period provided between the downlink region and the uplink region based on a transmission delay between the base station device and the user equipment. The frame configuration determination unit determines a configuration of the frame based on the length of the guard period. The notification unit notifies the user equipment of configuration information that indicates the configuration of the frame. The communication circuit communicates with the user equipment based on the configuration of the frame.
    Type: Application
    Filed: January 16, 2019
    Publication date: May 16, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Hongyang CHEN, Tsuyoshi Shimomura, Jianming Wu, YOSHINORI TANAKA
  • Publication number: 20190140781
    Abstract: A base station which switches an uplink signal and a downlink signal in a time-division manner to perform communication with a terminal, includes a generator, a transmitter, a first receiver, and a second receiver. The generator multiplexes a plurality of transmission signals assigned to respective pieces of wireless resource with different time lengths to generate a wireless signal. The transmitter transmits the wireless signal to the terminal at transmission timing of the downlink signal in a first frequency band. The first receiver receives the uplink signal transmitted from the terminal at transmission timing of the uplink signal in the first frequency band. The second receiver receives a response signal corresponding to at least one transmission signal, out of response signals indicating whether the respective transmission signals included in the wireless signal have properly been received in the terminal, in a second frequency band different from the first frequency band.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 9, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Tsuyoshi Hasegawa, Tsuyoshi Shimomura
  • Publication number: 20190132854
    Abstract: A wireless communication system includes: a base station configured to set a first radio resource which is used for transfer of a first data signal, and a second radio resource of which at least a portion overlaps the first radio resource, the second radio resource having a likelihood of being used for transfer of a second data signal, to be in a radio frame format; a first terminal configured to transmit the second data signal to a destination that is the base station, using the second radio resource; and a second terminal configured to, when it is detected that a portion of the first radio source that is allocated from the base station, which overlaps the second radio resource, is used for the transmission of the second data signal, does not perform transmission of the first data signal, which uses the overlapping portion.
    Type: Application
    Filed: December 27, 2018
    Publication date: May 2, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Michiharu Nakamura, Tsuyoshi Shimomura
  • Publication number: 20190116589
    Abstract: A terminal apparatus includes a receiver configured to receive a radio signal; processor circuitry configured to generate a response signal to respond to the received radio signal; and a transmitter configured to transmit a plurality of types of signals including the generated response signal, wherein a size of a radio resource to be used for transmitting the generated response signal is changed when the plurality of types of signals including the generated response signal are transmitted on one physical uplink control channel (PUCCH) resource.
    Type: Application
    Filed: December 12, 2018
    Publication date: April 18, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Tsuyoshi Shimomura, YOSHINORI TANAKA
  • Publication number: 20190089439
    Abstract: A base station apparatus includes: a memory; and processor circuitry coupled to the memory, wherein the processor circuitry is configured to: execute notification processing that includes transmitting a notification signal of a first information associated with a reliability of data transmission, execute transmission processing that includes transmitting a reference signal in two or more frequency bands, and execute reception processing that includes receiving a measurement report that includes a channel quality information of the frequency bands, the channel quality information being derived in accordance with the reliability of the data transmission associated with the first information.
    Type: Application
    Filed: November 15, 2018
    Publication date: March 21, 2019
    Applicant: FUJITSU LIMITED
    Inventor: Tsuyoshi Shimomura
  • Publication number: 20190074955
    Abstract: A base station that switches between uplink periods and downlink periods in a time division manner and performs communication, the base station includes a memory; processor circuitry coupled to the memory, wherein the processor circuitry is configured to: notify of allocation information indicating a combination of resources for time division duplex (TDD) uplink (UL) or downlink (DL) configuration at a predetermined interval; and generate control information indicating cancelation of transmission of a downlink signal, wherein the canceled transmission is configured to be performed by using one of the resources designated by the allocation information, and wherein the processor circuitry is further configured to transmit the generated control information.
    Type: Application
    Filed: November 8, 2018
    Publication date: March 7, 2019
    Applicant: FUJITSU LIMITED
    Inventor: Tsuyoshi Shimomura
  • Publication number: 20190029017
    Abstract: A wireless communication system includes: a base station; a relay node; and a wireless equipment configured to receive a downlink signal from the base station without the relay node being involved and to transmit an uplink signal to the base station via the relay node, wherein the base station is configured to control a timing at which the wireless equipment transmits the uplink signal, with the downlink signal, using information relating to first timing advance between the base station and the relay node.
    Type: Application
    Filed: September 11, 2018
    Publication date: January 24, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Hongyang CHEN, Tsuyoshi Shimomura, YOSHINORI TANAKA
  • Publication number: 20180310326
    Abstract: A communication system for which a first time period and a second time period different from the first time period are set in each of predetermined time intervals, includes: a base station; a first terminal configured to execute radio transmission between the first terminal and the base station in either one of an uplink and a downlink during the first time period and radio transmission between the first terminal and the base station in the other one of the uplink and the downlink in a direction opposite to the first time period during the second time period; and a second terminal configured to execute radio transmission between the second terminal and the base station in a link in the same direction as the first terminal during the first time period and does not execute radio transmission between the second terminal and the base station during the second time periods.
    Type: Application
    Filed: June 28, 2018
    Publication date: October 25, 2018
    Applicant: FUJITSU LIMITED
    Inventors: YOSHINORI TANAKA, Tsuyoshi Shimomura
  • Publication number: 20180255563
    Abstract: A communication device supports a D2D (Device-to-Device) communication and includes a storage, a scheduler and a transmitter. The storage stores a first resource pool information that indicates first resource pool including control resources allocated to control information for transmitting data and a second resource pool information that indicates second resource pool including data resources allocated to data. The scheduler selects a first resource for transmitting control information from the first resource pool and selects a second resource for transmitting data from the second resource pool. The transmitter transmits the control information by using the first resource and transmit the data by using the second resource. The scheduler selects the second resource from the second resource pool according to a received signal intensity in at least one of resources included in the first resource pool and the second resource pool.
    Type: Application
    Filed: April 30, 2018
    Publication date: September 6, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Hongyang CHEN, Tsuyoshi Shimomura, YOSHINORI TANAKA
  • Publication number: 20180255579
    Abstract: A terminal device includes a processor and a memory connected to the processor, wherein the processor executes a process including: receiving a resource specifying signal that specifies a random access resource used to transmit a preamble for random access; selecting one preamble from a plurality of preamble candidates previously acquired; and transmitting the selected preamble by using a random access resource arranged in timing based on a reception timing of the resource specifying signal.
    Type: Application
    Filed: May 1, 2018
    Publication date: September 6, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Tsuyoshi Shimomura, YOSHINORI TANAKA
  • Patent number: 10034287
    Abstract: A communications method includes transmitting by a radio apparatus, where the radio apparatus transmits to a control apparatus, first information indicating a wireless scheme that the radio apparatus can use in any one among wireless communication and wireless broadcasting; extracting and transmitting by the control apparatus, where the control apparatus extracts from frequency information correlating wireless schemes and available frequencies, a frequency that corresponds to the wireless scheme indicated by the first information transmitted by the radio apparatus and transmits to the radio apparatus, second information indicating the extracted frequency; and performing by the radio apparatus, any one among the wireless communication and the wireless broadcasting, using the frequency indicated by the second information transmitted by the control apparatus.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: July 24, 2018
    Assignee: FUJITSU LIMITED
    Inventor: Tsuyoshi Shimomura
  • Publication number: 20180007674
    Abstract: A base station performs wireless communication with a terminal using a first frequency band which needs a license to use for wireless communication and a second frequency band which does not need the license to use for the wireless communication. The base station includes: a generator that generates a request signal for requesting data transmission of the terminal in the second frequency band and specifying a first transmission timing of the terminal; and a transmitter that transmits the request signal to the terminal, wherein the request signal includes information specifying a second transmission timing, which is a next transmission timing when the terminal does not perform data transmission at the first transmission timing and is specified by an offset from a reference timing.
    Type: Application
    Filed: September 19, 2017
    Publication date: January 4, 2018
    Applicant: FUJITSU LIMITED
    Inventor: Tsuyoshi Shimomura
  • Publication number: 20170325195
    Abstract: A wireless communications system includes a first wireless apparatus and a second wireless apparatus. The first wireless apparatus transmits a paging message that includes information indicating a plurality of cells. The paging message causes the second wireless apparatus to transition from an idle state to a connected state. The second wireless apparatus perform processing of connecting to a cell selected based on the information included in the paging message transmitted from the first wireless apparatus.
    Type: Application
    Filed: July 25, 2017
    Publication date: November 9, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuya YANO, Takayoshi ODE, Yoshiaki OHTA, Shinichiro AIKAWA, Tsuyoshi SHIMOMURA, Michiharu NAKAMURA
  • Patent number: 9807676
    Abstract: The frequency notifying device includes: a processor configured to store usable frequencies containing a restricted frequency being restricted in use thereof by radio equipment in a predetermined communication area and a frequency not being restricted in use thereof by the radio equipment in the communication area; and notify the radio equipment, in the communication area, of a signal for requesting the radio equipment to check whether the restricted frequency is usable or not before performing a communication using the restricted frequency when notifying the radio equipment of the usable frequency.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: October 31, 2017
    Assignee: FUJITSU LIMITED
    Inventor: Tsuyoshi Shimomura
  • Patent number: 9763121
    Abstract: A communications apparatus includes a processor configured to identify positions where wireless communication with a mobile communications apparatus is possible, the positions being included in a coverage area of the communications apparatus; and obtain from a database that is inaccessible to the mobile communications apparatus, frequency information that indicates frequencies that can be used for the wireless communication at the identified positions; and an announcing unit configured to announce in the coverage area and by a radio signal, correspondence information that is based on the frequency information obtained by the obtaining unit and that correlates the positions and the frequencies that can be used.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: September 12, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Teppei Oyama, Tsuyoshi Shimomura
  • Patent number: 9730190
    Abstract: A terminal apparatus includes a downlink transceiver that receives downlink data via a base station governing a first cell and exchanges with the base station governing the first cell, control information that is for receiving the downlink data; and an uplink transceiver that transmits uplink data via a base station governing a second cell that is different from the first cell and exchanges with the base station governing the second cell, control information that is for transmitting the uplink data.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: August 8, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Takato Ezaki, Tsuyoshi Shimomura
  • Publication number: 20170223742
    Abstract: A wireless communications system configured to use a predetermined bandwidth of a Unlicensed bandwidth, includes a base station; and one or more terminals connected to the base station. The one or more terminals calculate a transmission start timing according to a control signal from the base station, perform a process of detecting a wireless signal of the predetermined bandwidth before the transmission start timing, and when a state in which no wireless signal of the predetermined bandwidth is detected has elapsed for a predetermined period, the one or more terminals start transmission from the calculated transmission start timing.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 3, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Tsuyoshi Shimomura, YOSHINORI TANAKA