Patents Assigned to NTT DoCoMo, Inc.
-
Patent number: 11902069Abstract: A terminal according to one aspect of the present disclosure includes: a control section that assumes that a frequency domain orthogonal cover code (FD-OCC) having a sequence length of a number larger than two is applied to a demodulation reference signal mapped to a pair of resource elements the number of which is greater than two and that are being different in frequency; and a transmitting/receiving section that performs transmission processing or reception processing of the demodulation reference signal, based on the FD-OCC. According to one aspect of the present disclosure, even when there are terminals according to different releases, each of the terminals can appropriately perform communication.Type: GrantFiled: August 2, 2019Date of Patent: February 13, 2024Assignee: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Yuichi Kakishima, Satoshi Nagata
-
Publication number: 20240049191Abstract: A terminal comprises: a reception unit that receives a first control information by a first control channel on a first carrier and a second control information by a second control channel on a second carrier; and a control unit that controls a reception of the second control channel based on the first control information, and controls a communication of data based on the second control information.Type: ApplicationFiled: December 25, 2020Publication date: February 8, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Shohei Yoshioka, Masaya Okamura, Shinya Kumagai, Satoshi Nagata
-
Publication number: 20240048289Abstract: A terminal according to an aspect of the present disclosure includes: a control section that determines a size of a semi-static hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook including HARQ-ACK corresponding to a downlink shared channel (physical downlink shared channel (PDSCH)) of semi-persistent scheduling (SPS) based on the number of configured SPS configurations, the number of configured or activated cells, and the number of HARQ-ACK timing values included in a set of the configured HARQ-ACK timing values; and a transmitting section that transmits an HARQ-ACK information bit corresponding to the HARQ-ACK codebook by using a resource of an uplink control channel. According to one aspect of the present disclosure, the HARQ-ACK can be appropriately feed back even in a case where multiple SPSs are used.Type: ApplicationFiled: October 3, 2019Publication date: February 8, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Satoshi Nagata, Xiaohong Zhang, Shaozhen Guo, Lihui Wang, Xiaolin Hou
-
Publication number: 20240048127Abstract: An analysis device includes: an estimation unit that obtains a current state variable by state estimation based on a state variable for first sequence data generated by applying a first conversion to observation data, a state space model, and each element included in the first sequence data; an observation unit that generates second sequence data by applying an observation process to the current state variable; an elaboration unit that generates third sequence data by performing an elaboration process of correcting each element included in the second sequence data so that a value of each cell of the estimated observation data does not become a negative value and the number of cells having a value other than 0 included in the estimated observation data is suppressed; and a second conversion unit that generates the estimated observation data by applying a second conversion to the third sequence data.Type: ApplicationFiled: March 24, 2021Publication date: February 8, 2024Applicant: NTT DOCOMO, INC.Inventors: Hiroto AKATSUKA, Masayuki TERADA
-
Publication number: 20240049195Abstract: A terminal includes: a reception unit configured to receive a block including a synchronization signal and a broadcast channel, a control channel carrying control information, and a shared channel carrying system information by applying single beamforming; and a control unit configured to perform an initial access, based on the system information. The block and one or both of the control channel and the shared channel are frequency-multiplexed, and the control channel and the shared channel are time-multiplexed.Type: ApplicationFiled: January 5, 2021Publication date: February 8, 2024Applicant: NTT DOCOMO, INC.Inventors: Naoya Shibaike, Mayuko Okano, Hiroki Harada, Jing Wang, Qiping PI
-
Publication number: 20240048190Abstract: The present disclosure provides a terminal and a base station in a communication system. The terminal includes: a receiving unit configured to receive, from a base station, first information indicating a first parameter, where the first parameter indicates a number of candidate transform domain vectors regarding a subcarrier-level precoding matrix, and a value of the first parameter is smaller than a number of subcarriers of the communication system; the receiving unit being further configured to receive, from the base station, second information indicating a second parameter, where the second parameter indicates a number of transform domain vectors used to determine the subcarrier-level precoding matrix; and a control unit configured to determine, from the number of candidate transform domain vectors indicated by the first information, the number of transform domain vectors indicated by the second information.Type: ApplicationFiled: December 29, 2020Publication date: February 8, 2024Applicant: NTT DOCOMO, INC.Inventors: Wenjia Liu, Xiaolin Hou, Xin Wang, Yuki Matsumura, Nadisanka Rupasinghe
-
Publication number: 20240048964Abstract: A base station is disclosed that includes a transmitting and receiving circuit that transmits an RLM reference signal (RLM-RS) to a terminal. In Frequency Range 1 (FR1), when the RLM-RS is a synchronization signal block (SSB) and the terminal does not have a capability of simultaneous transmission or reception of data and an SSB with different numerologies, the transmitting and receiving circuit does not transmit or receive data on symbols of the RLM-RS, the data being with a different subcarrier spacing (SCS) than an SCS of the RLM-RS. In Frequency Range 2 (FR2), if the RLM-RS is a quasi-co-located reference signal with active transmission configuration indicator state (TCI-state), then the transmitting and receiving circuit can transmit or receive data on symbols of the RLM-RS. In other aspects, a radio communication method and a system are also disclosed.Type: ApplicationFiled: October 11, 2023Publication date: February 8, 2024Applicant: NTT DOCOMO, INC.Inventor: Hiroki Harada
-
Patent number: 11895576Abstract: An NSSF (69) includes: a selection unit selecting a slice corresponding to a service related to a request from a terminal (10) and a target processing server corresponding to the slice based on slice correspondence information including information where a slice, a processing server corresponding to the slice, and a service used by a terminal are associated with one another; and a notification unit notifying an AMF (30) of selection result including information regarding the slice and target processing server. The AMF includes: a determination processing unit determining whether the AMF is a target processing server based on information on the target processing server in the selection result information, and performing processing for a service when the AMF is the target processing server, or transferring a request for processing for a service to the target processing server when the AMF is not the target processing server.Type: GrantFiled: April 27, 2018Date of Patent: February 6, 2024Assignee: NTT DOCOMO, INC.Inventors: Takuya Shimojou, Atsushi Minokuchi, Ashiq Khan, Srisakul Thakolsri, Malla Reddy Sama, Joan Triay Marques, Irfan Ali
-
Patent number: 11895523Abstract: A user apparatus includes a communication unit configured to communicate with a first base station apparatus and a second base station apparatus, wherein the first base station apparatus is a master node in a New Radio (NR) radio communication system and the second base station apparatus is a secondary node in the NR radio communication system; a reception unit configured to receive from the first base station apparatus an instruction to measure a system frame number and frame timing difference (SFTD) representing a system frame number and frame timing difference between cells; a control unit configured to measure SFTD between a cell of the first base station apparatus and a cell of the second base station apparatus based on the instruction to measure SFTD; and a transmission unit configured to transmit to the first base station apparatus a measurement result including the measured SFTD.Type: GrantFiled: February 8, 2019Date of Patent: February 6, 2024Assignee: NTT DOCOMO, INC.Inventors: Hideaki Takahashi, Tianyang Min, Tooru Uchino
-
Patent number: 11891176Abstract: Recovery of a flying vehicle that has fallen to the ground is facilitated. A positioning unit measures a position of the flying vehicle during flight. A specification unit specifies a feature of a region on the ground corresponding to the measured position. A determination unit determines a sending interval of position information indicating the position of the flying vehicle, according to the specified feature. A sending unit sends the position information at the determined sending interval.Type: GrantFiled: May 8, 2019Date of Patent: February 6, 2024Assignee: NTT DOCOMO, INC.Inventors: Naoki Kameyama, Tomoe Ushiro, Youhei Oono, Yuichiro Segawa
-
Patent number: 11895622Abstract: A user apparatus in a mobile communication system includes an allocation means that divides a message that includes control information and data into a plurality of partial messages, and allocates resources included in one or more resource pools to the plurality of partial messages; and a transmission means that transmits the plurality of partial messages using the resources allocated by the allocation means.Type: GrantFiled: July 22, 2020Date of Patent: February 6, 2024Assignee: NTT DOCOMO, INC.Inventors: Shimpei Yasukawa, Satoshi Nagata, Qun Zhao, Yongbo Zeng, Yongsheng Zhang
-
Patent number: 11895656Abstract: The present invention is designed so that, even when a sequence-based uplink control channel is used, uplink control information is reported appropriately. A user terminal according to one aspect of the present invention has a control section that determines to use one or both of a short uplink control channel, which is transmitted in a short period, and a long uplink control channel, which is transmitted in a longer period than the short uplink control channel, based on certain information, and a transmission section that transmits the uplink control information using the determined uplink control channel.Type: GrantFiled: February 23, 2018Date of Patent: February 6, 2024Assignee: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Kazuki Takeda, Satoshi Nagata
-
Patent number: 11894925Abstract: An embodiment of present disclosure provides a method of transmitting channel state information reference signals, and a base station. An embodiment of the present disclosure provides a method of transmitting channel state information reference signals (CSI-RSs), which is executed by a base station, and this method includes the steps of determining whether or not it is necessary to use aperiodic CSI-RSs in a communication system in which a base station to use periodic CSI-RSs is provided, generating an aperiodic CSI-RS trigger signal and communicating the aperiodic CSI-RS trigger signal to a mobile station when aperiodic CSI-RSs need to be used, and communicating aperiodic CSI-RSs to the mobile station in accordance with the aperiodic CSI-RS trigger signal.Type: GrantFiled: February 28, 2017Date of Patent: February 6, 2024Assignee: NTT DOCOMO, INC.Inventors: Chongning Na, Huiling Jiang, Yuichi Kakishima, Satoshi Nagata
-
Patent number: 11895559Abstract: An object is to provide a moving route determination device that makes it possible to accurately determine a user's moving route. A server device 100 includes a geofence evaluation unit 105 configured to store a scoring table for determining a moving route of a user terminal 200, a check-in log acquisition unit 103 configured to acquire at least one of a check-in log which is a history of position management information, such as check-in information, settlement information, or search information, indicating that the user terminal 200 is located in a predetermined range, a settlement log, and a search log as a position management log, and a scoring determination unit 106 configured to determine a moving route of the user terminal 200 on the basis of the position management log and determination information stored in the geofence evaluation unit 105 in a case where a moving means is not able to be determined from at least one of the check-in log, the settlement log, and the search log.Type: GrantFiled: July 23, 2019Date of Patent: February 6, 2024Assignee: NTT DOCOMO, INC.Inventors: Tomohiro Nakagawa, Takuya Doumen, Chao Xue
-
Patent number: 11895657Abstract: A user terminal according to the present invention includes: a transmitting section that transmits Uplink Control Information (UCI) including at least one of retransmission control information for a downlink data channel, a Scheduling Request (SR) and Channel State Information (CSI); and a control section that controls the transmission of the UCI when a first uplink control channel and a second uplink control channel having a longer duration than that of the first uplink control channel are subjected to time division multiplexing in one or more slots.Type: GrantFiled: October 23, 2017Date of Patent: February 6, 2024Assignee: NTT DOCOMO, INC.Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Xiaolin Hou
-
Publication number: 20240039604Abstract: The present disclosure provides a method for precoding matrix indicator (PMI) transmission and a method for determining precoding granularity performed by a terminal, and a corresponding terminal and base station. The terminal includes: a receiving unit configured to receive first information about the precoding matrix indicator (PMI) from a base station of the communication system; and a control unit configured to determine whether to transmit second information about the precoding matrix indicator according to the first information, wherein the precoding matrix indicator is for a subcarrier-level precoding matrix.Type: ApplicationFiled: December 29, 2020Publication date: February 1, 2024Applicant: NTT DOCOMO, INC.Inventors: Wenjia Liu, Xiaolin Hou, Xin Wang, Yuki Matsumura, Nadisanka Rupasinghe
-
Publication number: 20240040585Abstract: A terminal has a first receiver that receives a first control signal and a second receiver that receives a second control signal or data. The first receiver receives a first control signal that includes at least either information, instruction or control relating to the second control signal or data received by the second receiver.Type: ApplicationFiled: December 11, 2020Publication date: February 1, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Hiroki Harada, Satoshi Nagata
-
Publication number: 20240040486Abstract: A terminal has: a transmitting unit configured to transmit, to a communication device, a requesting signal that requests transmission of a cell search signal; and a receiving unit configured to receive the cell search signal transmitted based on the requesting signal and identify information related to a cell.Type: ApplicationFiled: March 24, 2021Publication date: February 1, 2024Applicant: NTT DOCOMO, INC.Inventors: Shinya Kumagai, Mayuko Okano, Masaya Okamura, Yuki Takahashi, Shohei Yoshioka, Satoshi Nagata
-
Publication number: 20240040520Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a higher layer parameter corresponding to a report related to maximum permitted exposure (MPE) specific to a beam, and a control section that controls transmission of the report using a medium access control (MAC) control element (CE), based on the higher layer parameter. According to one aspect of the present disclosure, the report related to MPE can be appropriately performed.Type: ApplicationFiled: December 11, 2020Publication date: February 1, 2024Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
-
Publication number: 20240040502Abstract: A terminal includes a reception unit configured to receive control information from another terminal in a resource pool; a control unit configured to control an operation related to DRX (Discontinuous reception) and autonomously select a resource based on the control information and a state related to the DRX in the resource pool; and a transmission unit configured to perform transmission to the other terminal using the selected resource.Type: ApplicationFiled: January 18, 2021Publication date: February 1, 2024Applicant: NTT DOCOMO, INC.Inventors: Shohei Yoshioka, Satoshi Nagata