Patents Assigned to NTT DoCoMo, Inc.
  • Publication number: 20200252955
    Abstract: To appropriately control UL grant-free transmission, a user terminal according to one aspect of the present invention includes: a transmission section that performs UL grant-free transmission for transmitting UL data without a UL transmission instruction from a radio base station; and a control section that controls the UL grant-free transmission based on a periodicity of a UL grant-free transmission resource notified by a higher layer signaling, and a physical layer signaling for notifying activation of the UL grant-free transmission, and the control section determines a start position of the UL grant-free transmission resource to which a given periodicity is applied based on offset information included in the physical layer signaling.
    Type: Application
    Filed: July 31, 2017
    Publication date: August 6, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Xiaolin Hou
  • Publication number: 20200252887
    Abstract: A terminal for communicating with a base station apparatus is disclosed, the terminal including a controller that sets maximum transmission power based on an Effective Isotropic Radiated Power (EIRP) of the terminal; and a transmitter that transmits an uplink signal based on the maximum transmission power. In other aspects, a communication method by a terminal for communicating with a base station apparatus is also disclosed.
    Type: Application
    Filed: July 30, 2018
    Publication date: August 6, 2020
    Applicant: NTT DOCOMO, INC.
    Inventor: Kei Andou
  • Publication number: 20200249832
    Abstract: An information processing terminal includes a display control unit that displays content including a plurality of selectable objects on a touch screen. A specification determination unit determines whether or not a pinch-in operation performed on the touch screen is a specifying operation performed to specify one or more objects included in the content displayed on the touch screen. A saving unit, upon the pinch-in operation being determined as the specifying operation, saves the one or more objects specified by the specifying operation onto the clipboard.
    Type: Application
    Filed: December 25, 2017
    Publication date: August 6, 2020
    Applicant: NTT DOCOMO, INC.
    Inventor: Takurou Itou
  • Publication number: 20200252884
    Abstract: A user equipment includes: selection means configured to receive a plurality of signaling values and a plurality of maximum transmission power values corresponding to the plurality of signaling values from a base station, to select one signaling value of the plurality of signaling values, and to select the maximum transmission power value corresponding to the selected signaling value; and control means configured to perform cell selection or cell reselection by determining whether a reception level value in a cell to be determined satisfies a predetermined condition using a correction value, which is obtained by subtracting a compensation value based on the maximum transmission power value from a minimum reception level value predetermined for the cell to be determined in the cell selection or cell reselection, and the reception level value measured for the cell to be determined.
    Type: Application
    Filed: August 22, 2016
    Publication date: August 6, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Hiromasa Umeda
  • Publication number: 20200252166
    Abstract: The present invention is designed to allow co-presence with other systems, and, furthermore, achieve improved spectral efficiency in cells (for example, unlicensed bands) in which pre-transmission listening is employed. The present invention provides a transmitter that transmits a downlink (DL) signal, a controller that controls DL transmission by applying listening before performing transmission of the DL signal, and a receiver that receives a delivery acknowledgement signal (ACK/NACK) in response to the DL transmission, wherein the controller controls a contention window value to apply to listening based on a number of acknowledgements (ACKs) in response to the DL transmission within a predetermined period, and a number of codewords and/or a number of transport blocks for the DL transmission.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 6, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata
  • Publication number: 20200252956
    Abstract: A data transmitting method is presented for implementing early acknowledgement of receipt of uplink data and new transmission scheduling. The data transmitting method for user equipment includes: receiving scheduling information from a base station; transmitting first uplink data to the base station by an initial number of retransmissions; monitoring, in a first search space, whether a first acknowledgement signal for uplink data has been received from the base station, and meanwhile, monitoring, in a second search space, whether a second acknowledgement signal for uplink data has been received from the base station; in the case that the first acknowledgement signal has been received in the first search space, stopping retransmitting the first uplink data; and in the case that the second acknowledgment signal has been received in the second search space, stopping retransmitting the first uplink data, and starting to transmit the second uplink data to the base station.
    Type: Application
    Filed: May 24, 2018
    Publication date: August 6, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Jiahui LIU, Qin MU, Liu LIU, Naoto OKUBO
  • Publication number: 20200252180
    Abstract: To enable activation/deactivation of one or more frequency bands (for example, BWPs) configured in a carrier to be appropriately controlled. A user terminal of the present invention includes a receiving section that monitors a control resource region in a downlink (DL) frequency band in a carrier, to receive downlink control information (DCI), and a control section that controls transmission of a uplink (UL) signal in an UL frequency band in the carrier, based on the DCI. The control section controls activation or deactivation of the UL frequency band.
    Type: Application
    Filed: August 10, 2017
    Publication date: August 6, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuaki Takeda, Kazuki Takeda, Satoshi Nagata
  • Patent number: 10733679
    Abstract: An aloneness estimation device estimating whether a user acts alone includes an operation state information acquisition unit configured to acquire operation state information indicating the user's operation state of a terminal per position, a criteria setting unit configured to set criteria for use in estimation in accordance with a position related to the acquired operation state information, an estimation unit configured to estimate whether the user acts alone from the operation state information acquired by the operation state information acquisition unit based on the set criteria, and an output unit configured to output information in accordance with estimation.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: August 4, 2020
    Assignee: NTT DOCOMO, INC.
    Inventors: Naoki Yamamoto, Keiichi Ochiai, Akiya Inagaki
  • Patent number: 10735746
    Abstract: The invention relates to a motion compensation performed under an inter-frame prediction. A fractional sample interpolation is applied on retrieved samples to generate fractional samples. The fractional sample interpolation comprises a plurality of filtering operations, and all of filtered results from the filtering operations are truncated down to a predetermined bit depth independent of the bit depth of the samples stored in the reference picture memory.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: August 4, 2020
    Assignee: NTT DOCOMO, INC.
    Inventor: Frank Jan Bossen
  • Publication number: 20200244413
    Abstract: The present invention is designed to enable quick beam recovery. A user terminal according to the present invention has a receiving section that receives a downlink (DL) signal, and a control section that controls a beam that is used to transmit and/or receive the DL signal, and the control section controls transmission of an uplink (UL) signal that requests switching of the beam, based on the received power and/or the received quality of a plurality of mobility measurement signals that are respectively associated with a plurality of beams.
    Type: Application
    Filed: February 2, 2018
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuaki Takeda, Satoshi Nagata, Chongning Na, Yuichi Kakishima
  • Publication number: 20200245347
    Abstract: A new configuration suitable for a downlink single carrier is provided in a downlink control signal of a radio communication system of the future. A user terminal includes: a reception section that receives a downlink signal including a downlink control signal and a downlink data signal; and a demodulation and decoding section that uses the downlink control signal to demodulate and decode the downlink data signal, in which the downlink control signal is mapped to signal transmission points of a single carrier in units of control channel elements.
    Type: Application
    Filed: November 30, 2017
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Hideyuki Moroga, Kazuaki Takeda, Satoshi Nagata
  • Publication number: 20200245320
    Abstract: A terminal is disclosed that includes a transmitter that transmits uplink data and uplink control information using an uplink shared channel. The terminal further includes a processor that determines, based on a bandwidth allocated to the uplink shared channel, one or more resource elements, where the one or more resource elements have a frequency interval and are used for mapping the uplink control information. In other aspects, a radio communication method for a terminal is also disclosed.
    Type: Application
    Filed: September 29, 2017
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Kazuki Takeda, Satoshi Nagata
  • Publication number: 20200244499
    Abstract: A user terminal according to one aspect of the present disclosure has a transmission section that transmits uplink control information by using an uplink shared channel, and a control section that selects resource elements, which are provided at given frequency intervals, and which are for mapping the uplink control information, in a symbol adjacent to a symbol for a demodulation reference signal for the uplink shared channel.
    Type: Application
    Filed: October 9, 2018
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Shohei Yoshioka, Kazuki Takeda, Satoshi Nagata
  • Publication number: 20200244571
    Abstract: A C-plane device in a path control system comprises: a storage unit storing designation information designating search key information of a node used as a search key determining a transmission destination and part information indicating a packet part in which the search key information is included; and a setting unit, in a case in which a new node is connected to the U-plane device, acquires node information relating to the new node, extracts search key information of the new node on the basis of the acquired node information and the stored to designation information, and, in a case in which, in a packet received by the U-plane device, the search key information of the new node is included in a packet part indicated by the part information, sets a transmission destination of the packet for each of at least a part of U-plane devices.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Youhei Katayama, Ryousuke Kurebayashi, Shigeru Iwashina, Motoshi Tamura
  • Publication number: 20200244411
    Abstract: The present invention is designed so that data communication processes are performed properly even when different slot configurations (for example, downlink control channels) than existing LTE systems are used. To achieve this purpose, a receiving section that receives downlink control information and a control section that controls receipt and/or transmission of scheduled data based on the downlink control information are provided, and the receiving section receives information related to a location to allocate the data in a time direction, for each predetermined frequency-domain unit.
    Type: Application
    Filed: March 10, 2017
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang
  • Publication number: 20200245180
    Abstract: 3G system does not retain UE Capability that indicates that UE (50) supports CE Mode, and an LTE system retains the UE Capability. eNB (100B) controls transition of the UE (50) from the 3G system to the LTE system. When the UE (50) transitions to the LTE system, the eNB (100B) transmits UE Capability Enquiry via which the UE Capability of the UE (50) is enquired to the UE (50), and acquires from the UE (50) the UE Capability that includes whether the UE (50) supports the CE Mode.
    Type: Application
    Filed: August 15, 2017
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Ryusuke Matsukawa, Masato Taniguchi, Wuri Andarmawanti Hapsari, Kenichiro Aoyagi, Zahid Zaki
  • Publication number: 20200244390
    Abstract: A user terminal according to the present invention includes: a reception section that receives each of information indicating a code rate for a first uplink control channel, and information indicating a code rate for a second uplink control channel having a longer duration than that of the first uplink control channel; and a control section that controls transmission of Uplink Control Information (UCI) based on a code rate indicated by the information matching an uplink control channel used for the transmission of the uplink control information.
    Type: Application
    Filed: October 19, 2017
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Xiaolin Hou
  • Publication number: 20200245270
    Abstract: A terminal is disclosed including a receiver that measures a first received power in a first resource of a synchronization signal per synchronization signal block index in a cell, and measures a second received power in a second resource; and a processor that derives a measurement result based on a ratio of the first received power to the second received power per the synchronization signal block index. In other aspects, a radio communication method for a terminal is also disclosed.
    Type: Application
    Filed: August 10, 2017
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Hiroki Harada, Satoshi Nagata, Jing Wang, Liu Liu
  • Publication number: 20200245336
    Abstract: A user terminal according to the present invention includes: a transmitting section that transmits uplink control information (UCI) using an uplink control channel of a first duration and/or an uplink control channel of a second duration longer than the first duration; a receiving section that receives information related to fallback of the uplink control channel; and a control section that controls a format of the uplink control channel to be used to transmit the UCI, based on information related to the fallback.
    Type: Application
    Filed: October 6, 2017
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Kazuki Takeda, Satoshi Nagata
  • Publication number: 20200245351
    Abstract: The present invention provides a user terminal and a radio communication method, whereby data communication processes can be performed adequately even when downlink control channels that are different from those of existing LTE systems are configured. A user terminal has a receiving section that receives downlink control information, which is transmitted via a downlink control channel in a control resource set configured in a predetermined resource block, and a control section that controls receipt of downlink data scheduled in a predetermined frequency field, based on the downlink control information, and the downlink data is allocated over the predetermined frequency field from the same time location, or allocated to the predetermined frequency field from varying time locations.
    Type: Application
    Filed: February 2, 2018
    Publication date: July 30, 2020
    Applicant: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Qin Mu, Liu Liu, Huiling Jiang