Patents by Inventor Hiroyuki Adachi

Hiroyuki Adachi 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: 10433150
    Abstract: A communication method including transmitting, from a radio terminal connected to a cell to a base station managing the cell operated in a first frequency, a first message that a discovery signal is transmitted for public safety in a second frequency; receiving, by the base station, the first message; and transmitting, from the base station to the radio terminal, a second message including information on radio resources to be used in transmission of the discovery signal in the second frequency, based on the first message. The method further includes transmitting, from the base station to the radio terminal, first information and second information. The first information indicates a threshold value for determining whether or not the radio terminal transmits the first message. The radio terminal uses the second information to determine whether or not the radio terminal is allowed to transmit the first message.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: October 1, 2019
    Assignee: KYOCERA Corporation
    Inventor: Hiroyuki Adachi
  • Patent number: 10433221
    Abstract: A base station according to one embodiment is configured to perform communication with a radio terminal and a wireless wide area network (WWAN) system. The base station comprises a controller configured to transmit first configuration information with which the radio terminal configures a measurement report in the radio terminal. The measurement report is a report of a measurement result about a signal transmitted by a wireless local area network (WLAN) system from an access point. The first configuration information includes a predetermined identifier associated with a group of access points to be measured by the radio terminal. The predetermined identifier is associated with an identifier of each of the access points in the group. The group is a group in which the radio terminal is capable of steering among access points without being dependent on a command from the base station.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: October 1, 2019
    Assignee: KYOCERA Corporation
    Inventors: Yushi Nagasaka, Masato Fujishiro, Hiroyuki Adachi, Henry Chang
  • Publication number: 20190281596
    Abstract: A communication device according to one embodiment comprise a transmitter configured to directly transmit a radio signal to another communication device. The transmitter is configured to transmit, when first location information indicating a geographical location of the communication device is acquired, the radio signal, based on a first radio resource associated with a location indicated by the first location information. The transmitter is configured to transmit, when the communication device cannot acquire the first location information, the radio signal, based on a second radio resource. The second radio resource is decided based on a method different from a method of deciding the first radio resource by using the first location information.
    Type: Application
    Filed: July 25, 2017
    Publication date: September 12, 2019
    Applicant: KYOCERA Corporation
    Inventors: Hiroyuki ADACHI, Takahiro SAIWAI, Masato FUJISHIRO, Kugo MORITA
  • Publication number: 20190268969
    Abstract: A radio terminal according to one embodiment comprises a processor. The processor is configured to: forward a data unit from an RLC layer to a MAC layer prior to receiving an uplink grant from a base station; receive the uplink grant for determining a predetermined transport block size from the base station; generate a transport block by performing concatenation or segmentation on the data unit according to the predetermined transport block size in the MAC layer; and transmit the generated transport block to the base station via a PHY layer. The processor is configured to receive TBS information indicating a minimum guaranteed value of a transport block size from the base station. The predetermined transport block size is a value equal to or larger than the minimum guaranteed value.
    Type: Application
    Filed: November 1, 2017
    Publication date: August 29, 2019
    Applicant: KYOCERA Corporation
    Inventor: Hiroyuki ADACHI
  • Patent number: 10397900
    Abstract: A communication control method includes: a step A of receiving, by UE 100-1 in a coverage of the mobile communication system, broadcast information transmitted from eNB 200; a step B of transferring, by the UE 100-1, the broadcast information to UE 100-2 outside the coverage of the mobile communication system; and a step C of receiving, by the UE 100-2, the broadcast information transferred from the UE 100-1.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: August 27, 2019
    Assignee: KYOCERA Corporation
    Inventors: Hiroyuki Adachi, Noriyoshi Fukuta, Masato Fujishiro, Kugo Morita
  • Publication number: 20190261139
    Abstract: A radio terminal according to one embodiment is a radio terminal for a mobile communication system supporting MBMS. The radio terminal comprises a receiver configured to receive level information from a base station; and a controller configured to perform a process of receiving an MBMS signal from the base station, based on the level information. The MBMS signal is transmitted from the base station using an enhanced coverage function for enhancing a coverage of the base station. The level information is information on an enhanced coverage level corresponding to the MBMS signal.
    Type: Application
    Filed: April 30, 2019
    Publication date: August 22, 2019
    Applicant: KYOCERA Corporation
    Inventors: Masato FUJISHIRO, Hiroyuki ADACHI, Henry CHANG
  • Publication number: 20190261140
    Abstract: A user equipment supports MBMS (Multimedia Broadcast Multicast Service) transmission using SC-PTM (Single Cell Point-To-Multipoint). The user equipment receives an MBMS service from a base station via SC-MTCH (Single Cell Multicast Traffic Channel). The user equipment receives, from the base station, MAC (Medium Access Control) CE (Control Element) indicating a suspension of transmission of the MBMS service via the SC-MTCH. The user equipment determines that the transmission of the MBMS service via the SC-MTCH is suspended in response to the reception of the MAC CE.
    Type: Application
    Filed: April 30, 2019
    Publication date: August 22, 2019
    Applicant: KYOCERA Corporation
    Inventors: Masato FUJISHIRO, Hiroyuki ADACHI, Henry CHANG
  • Publication number: 20190261450
    Abstract: A communication method according to one embodiment is a communication method in which a first radio terminal executes a layer 2 relay in which a packet of a second radio terminal is transmitted between the second radio terminal and a base station in a layer higher than a Radio Link Control (RLC) layer in Layer 2. The first radio terminal transmits information indicating that the first radio terminal is capable of executing the layer 2 relay. The second radio terminal transmits a request for the layer 2 relay to the first radio terminal in response to receiving the information.
    Type: Application
    Filed: November 1, 2017
    Publication date: August 22, 2019
    Applicant: KYOCERA Corporation
    Inventors: Hiroyuki ADACHI, Masato FUJISHIRO
  • Patent number: 10390207
    Abstract: A user terminal is used in a mobile communication system configured to support Device to Device (D2D) communication that is direct device-to-device communication. The user terminal comprises a controller. The controller is configured to, if determining to execute a D2D discovery procedure targeted to a user terminal out of a cell coverage, execute the D2D discovery procedure by using a D2D data resource in a pre-configured resource pool for D2D communication. The controller is configured to execute, upon executing the D2D discovery procedure, a process of transmitting identification information indicating that data carried by the D2D data resource is used for the D2D discovery procedure.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 20, 2019
    Assignee: KYOCERA Corporation
    Inventor: Hiroyuki Adachi
  • Patent number: 10390256
    Abstract: A communication method according to an embodiment, comprising: transmitting, from a base station to a radio terminal, a list indicating association between an identification of a logical channel group and a priority; generating, by the radio terminal, a buffer status report for direct communication; and transmitting, from the radio terminal to the base station, the buffer status report. The buffer status report includes an index of an destination identifier, an identifier of the logical channel group, and a buffer amount associated with the identifier of the logical channel group. In the generating the buffer status report, the radio terminal generates the buffer status report based on the list.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: August 20, 2019
    Assignee: KYOCERA Corporation
    Inventors: Takahiro Saiwai, Hiroyuki Adachi, Noriyoshi Fukuta, Masato Fujishiro
  • Patent number: 10382570
    Abstract: A base station according to a first aspect is used in a mobile communication system supporting a D2D proximity service which enables direct device to device communication. The base station comprises: a controller that determines whether to allow a user terminal to execute transmission/reception operations of a D2D synchronization signal to directly establish device to device synchronization; and a transmitter configured to transmit information indicating results of the determination to the user terminal. The controller performs the determination based on D2D range information indicating a permissible communication range of the user terminal in the D2D proximity service.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: August 13, 2019
    Assignee: KYOCERA Corporation
    Inventors: Masato Fujishiro, Hiroyuki Adachi, Henry Chang
  • Patent number: 10382988
    Abstract: A communication device according to an embodiment comprises: a controller configured to perform radio communication with another communication device in a mobile communication system to which an MDT function is applied. The controller obtains an MDT measurement result obtained by measuring a parameter in the radio communication. The parameter is a parameter affected by a latency reduction function. The controller adds, to the MDT measurement result, identification information on whether or not the latency reduction function is applied, depending on whether or not the latency reduction function is applied to the radio communication.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: August 13, 2019
    Assignee: KYOCERA Corporation
    Inventors: Yushi Nagasaka, Noriyoshi Fukuta, Hiroyuki Adachi
  • Patent number: 10362634
    Abstract: In a communication control method according to a present embodiment, at least one radio terminal of a first radio terminal and a second radio terminal discoveries the other radio terminal by executing a discovery for discovering a proximal terminal. The at least one radio terminal reports, to a network apparatus that the other radio terminal is discovered. The network apparatus requests, while the first radio terminal is located within a coverage of a cell, at least one of the first radio terminal and the second radio terminal to make a preparation for executing a relay by the second radio terminal by utilizing a proximal service.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: July 23, 2019
    Assignee: KYOCERA Corporation
    Inventors: Noriyoshi Fukuta, Masato Fujishiro, Kugo Morita, Hiroyuki Adachi
  • Publication number: 20190222983
    Abstract: A user equipment as a pedestrian user equipment (UE) performs P2X communication that is a direct inter-terminal communication with another user equipment. The user equipment receives a message including a resource pool from a base station. When the user equipment is in a radio resource control (RRC) idle state, determines whether or not the message include a resource pool for the P2X communication. In accordance with a determination that the message does not include the resource pool for the P2X communication, transitions from the RRC idle state to an RRC connected state for requesting a radio resource for the P2X communication to the base station.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 18, 2019
    Applicant: KYOCERA Corporation
    Inventor: Hiroyuki ADACHI
  • Publication number: 20190223239
    Abstract: A radio terminal according to one embodiment is configured to perform a relay between another radio terminal and a network. The radio terminal comprises: a transmitter configured to notify the network of first information indicating that the radio terminal is a relay terminal of the another radio terminal; a controller configured to forward data addressed to the another radio terminal to the another radio terminal via a connection between the another radio terminal through the radio terminal and the network; and a receiver configured to receive from the network a message indicating that the data addressed to the another radio terminal exists when at least part of the connection is released. The controller is configured to start control for establishing the connection in order to forward the data addressed to the another radio terminal in response to receiving the message.
    Type: Application
    Filed: March 26, 2019
    Publication date: July 18, 2019
    Applicant: KYOCERA Corporation
    Inventors: Hiroyuki ADACHI, Kugo MORITA, Masato FUJISHIRO, Mayumi KOMURA
  • Publication number: 20190223183
    Abstract: A mobile communication method for performing predetermined communication between a base station and a user terminal by using a narrow band including 6 resource blocks comprises: transmitting, from the base station to the user terminal, narrow band allocation information allocating a predetermined number of the narrow bands to the user terminal as allocation information of the narrow band used for the predetermined communication; performing by the user terminal, the predetermined communication by using the predetermined number of narrow bands based on the narrow band allocation information; transmitting, from the base station to the user terminal, an RRC message including information specifying a bandwidth supportable by the user terminal; and changing, by the base station, a number of bits of the narrow band allocation information according to the bandwidth supportable by the user terminal. The predetermined number of narrow bands are provided within a bandwidth supportable by the user terminal.
    Type: Application
    Filed: March 26, 2019
    Publication date: July 18, 2019
    Applicant: KYOCERA Corporation
    Inventors: Hiroyuki URABAYASHI, Chiharu YAMAZAKI, Hiroyuki ADACHI, Amit KALHAN
  • Patent number: 10356840
    Abstract: A radio terminal according to one embodiment is used in a mobile communication system. The radio terminal comprises a controller configured to perform control related to a DRX operation for intermittently monitoring a downlink control channel based on a comparison result of a value related to a moving speed of the radio terminal and a threshold value when the extended DRX operation is set from a network.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: July 16, 2019
    Assignee: Kyocera Corporation
    Inventors: Masato Fujishiro, Henry Chang, Hiroyuki Adachi
  • Patent number: 10349308
    Abstract: A communication control method is a method for performing offload to transfer a traffic load of a cellular base station to an access point. The communication control method comprises a step of maintaining without releasing the first connection, by a user terminal that have established a first connection with the cellular base station, even when the offload is started after establishing a second connection with the access point; and a determining step of determining, by the user terminal, whether the offload is continued or canceled after the offload is started.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: July 9, 2019
    Assignee: KYOCERA Corporation
    Inventors: Yushi Nagasaka, Masato Fujishiro, Hiroyuki Adachi, Kugo Morita, Chiharu Yamazaki, Henry Chang
  • Patent number: 10327273
    Abstract: A receiving terminal includes: a receiver configured to receive a data unit configured by data and a header, from the transmitting terminal in the D2D communication; and a controller configured to hold the data unit including a compressed header for a predetermined period even if decoding the compressed header is failed when the compressed header is used as the header. In the D2D communication, a timing at which a receiving entity is formed in the receiving terminal differs from a timing at which a transmitting entity is formed in the transmitting terminal.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: June 18, 2019
    Assignee: KYOCERA Corporation
    Inventor: Hiroyuki Adachi
  • Publication number: 20190182739
    Abstract: A base station and method thereof includes transmitting from the base station to a user equipment, parameters for an offload from the cellular RAN to a wireless local area network (LAN). The parameters are used by the user equipment to perform an access network selection between the cellular RAN and the wireless LAN, and include a first threshold for comparison with a cellular signal strength of the cellular RAN, a second threshold for comparison with a wireless LAN signal strength of the wireless LAN, and a third threshold for comparison with a load of the wireless LAN. When performing access network selection, the parameters may cause the user equipment to perform the offload, in response to the cellular signal strength being lower than the first threshold, the wireless LAN signal strength being higher than the second threshold, and the load of the wireless LAN being lower than the third threshold.
    Type: Application
    Filed: February 19, 2019
    Publication date: June 13, 2019
    Applicant: KYOCERA Corporation
    Inventors: Henry CHANG, Yushi NAGASAKA, Kugo MORITA, Fangwei TONG, Masato FUJISHIRO, Chiharu YAMAZAKI, Hiroyuki ADACHI, Noriyoshi FUKUTA