-
1.发明授权公开(公告)号：US12256336B2
公开(公告)日：2025-03-18
申请号：US17775092
申请日：2019-11-08
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Yuichi Kakishima , Satoshi Nagata
Abstract: A terminal according to an aspect of the present disclosure includes a receiving section that receives a pathloss reference signal, and a control section that calculates a pathloss for transmission power control on the basis of layer 1 (L1)-reference signal received power (RSRP) for the pathloss reference signal when the pathloss reference signal is updated by a media access control-control element (MAC CE), and a measurement condition is met. According to an aspect of the present disclosure, the pathloss can be appropriately calculated.
-
公开(公告)号：US20250080201A1
公开(公告)日：2025-03-06
申请号：US18953625
申请日：2024-11-20
Applicant: NTT DOCOMO, INC.
Inventor： Tomoki Yokokawa , Yuichi Kakishima , Takuma Takada
Abstract: A terminal, as disclosed, includes a receiver that receives a channel state information reference signal (CSI-RS) in a downlink; and a controller that determines, in a higher layer measurement based on the CSI-RS, that a delay time based on at least one of a number of samples used in the measurement or a scaling factor indicating an overlap between a resource for the CSI-RS and a measurement gap is included in a measurement time. If the resource for the CSI-RS partially overlaps a periodicity of the measurement gap, the controller determines that the scaling factor indicating the overlap between the resource for the CSI-RS and the measurement gap is a value based on a periodicity of the resource for the CSI-RS and the periodicity of the measurement gap. In other aspects, a base station, a communication method, and a communication system are also disclosed.
-
公开(公告)号：US12200530B2
公开(公告)日：2025-01-14
申请号：US17768418
申请日：2020-10-15
Applicant: NTT DOCOMO, INC.
Inventor： Yuichi Kakishima , Takuma Takada
IPC: H04W24/10 , H04B17/336 , H04W56/00
Abstract: A terminal includes a receiving unit that receives a block and a reference signal that is for measuring a channel state, wherein the block includes a synchronization signal and system information; and a control unit that measures L1-SINR (Layer1 Signal to interference plus noise power ratio) based on the block including the synchronization signal and the system information, the reference signal for measuring the channel state, and measurement using a resource for measuring interference, wherein the control unit determines a period of measurement of the L1-SINR based on a configuration of the resource for measuring the interference.
-
公开(公告)号：US12074656B2
公开(公告)日：2024-08-27
申请号：US17756988
申请日：2019-12-13
Applicant: NTT DOCOMO, INC.
Inventor： Yuichi Kakishima , Takuma Takada
IPC: H04B17/318 , H04L5/00
CPC classification number: H04B17/328 , H04L5/0048
Abstract: A terminal includes a receiving unit that receives a reference signal for acquiring a channel state and a control unit that performs measurement related to RSRP (Reference signal received power), based on a result of receiving the reference signal, and subcarrier spacing to be applied to the reference signal.
-
公开(公告)号：US12058664B2
公开(公告)日：2024-08-06
申请号：US17282260
申请日：2018-10-05
Applicant: NTT DOCOMO, INC.
Inventor： Yuichi Kakishima , Yuki Matsumura , Hideaki Takahashi
IPC: H04W72/044 , H04W8/24 , H04W72/23
CPC classification number: H04W72/046 , H04W8/24 , H04W72/23
Abstract: Provided are a user terminal, a radio base station, and a radio communication method that are capable of performing reception processing using the number of suitable MIMO layers for a downlink. The user terminal includes a reception section that receives a downlink signal from the radio base station. Furthermore, the user terminal includes a control section that assumes the maximum number of MIMO layers based on control information that is included in the downlink signal. In a case where the downlink signal includes first control information indicating the number of MIMO layers, the control section assumes the maximum number of MIMO layers based on the first control information.
-
Patent Agency Ranking
公开(公告)号：US11894925B2
公开(公告)日：2024-02-06
申请号：US16080409
申请日：2017-02-28
Applicant: NTT DOCOMO, INC.
Inventor： Chongning Na , Huiling Jiang , Yuichi Kakishima , Satoshi Nagata
CPC classification number: H04L1/0027 , H04L1/0026 , H04L5/0005 , H04L5/0048 , H04L5/0064
Abstract: 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.
-
公开(公告)号：US11881968B2
公开(公告)日：2024-01-23
申请号：US16958510
申请日：2017-12-27
Applicant: NTT DOCOMO, INC.
Inventor： Ryosuke Osawa , Yuichi Kakishima
IPC: H04L25/02 , H04B7/0456 , H04L5/00
CPC classification number: H04L25/0226 , H04B7/0482 , H04L5/0051
Abstract: A user terminal according to one aspect of the present disclosure includes: a transmitting section that transmits an uplink shared channel by applying a precoder; and a control section that specifies a number of ports used to determine the precoder when a Sounding Reference Signal (SRS) resource is not configured. According to one aspect of the present disclosure, even when an SRS resource is not configured, it is possible to appropriately determine a precoder of a UL signal.
-
公开(公告)号：US20230300650A1
公开(公告)日：2023-09-21
申请号：US17768418
申请日：2020-10-15
Applicant: NTT DOCOMO, INC.
Inventor： Yuichi Kakishima , Takuma Takada
IPC: H04W24/10 , H04B17/336 , H04W56/00
CPC classification number: H04W24/10 , H04B17/336 , H04W56/0015
Abstract: A terminal includes a receiving unit that receives a block and a reference signal that is for measuring a channel state, wherein the block includes a synchronization signal and system information; and a control unit that measures L1-SINR (Layer1 Signal to interference plus noise power ratio) based on the block including the synchronization signal and the system information, the reference signal for measuring the channel state, and measurement using a resource for measuring interference, wherein the control unit determines a period of measurement of the Ll-SINR based on a configuration of the resource for measuring the interference.
-
公开(公告)号：US20230123943A1
公开(公告)日：2023-04-20
申请号：US17914614
申请日：2020-03-31
Applicant: NTT DOCOMO, INC.
Inventor： Tomoki Yokokawa , Yuichi Kakishima , Takuma Takada
Abstract: A terminal including: a reception unit configured to receive configuration information of a time length for advancing a measurement gap from a base station apparatus; and a control unit configured to perform measurement, wherein the configuration information includes, as the time length for advancing the measurement gap, a time length selected from a plurality of time lengths including a predetermined time length shorter than 0.25 ms, and wherein the control unit is configured to perform measurement in the measurement gap advanced by the time length included in the configuration information.
-
公开(公告)号：US20230063137A1
公开(公告)日：2023-03-02
申请号：US17760054
申请日：2020-02-13
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Yuichi Kakishima , Satoshi Nagata
Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives a medium access control-control element (MAC CE) indicating a transmission configuration indication (TCI) state; and a control section that uses the TCI state for a spatial relation of a specific uplink signal at timing after acknowledgment (ACK) transmission to the MAC CE when the specific uplink signal satisfies an application condition. According to one aspect of the present disclosure, a UL signal can be appropriately transmitted.
-
-
-
-
-
-
-
-
-
Search Results
267
records
(took 0.039 seconds)
