公开(公告)号：US20160183209A1

公开(公告)日：2016-06-23

申请号：US14910515

申请日：2014-07-07

Applicant: NTT DOCOMO, INC.

Inventor： Yuki Inoue ,  Daiki Takeda

IPC: H04W56/00

CPC classification number: H04W56/0015 ,  H01Q1/246 ,  H01Q3/267 ,  H04B7/0413 ,  H04B7/10 ,  H04B17/12 ,  H04W56/0035

Abstract: When using a plurality of antenna elements, calibration is performed appropriately, while preventing processing time from increasing. A base station apparatus has a plurality of antenna elements; a combiner configured to receive and combine downlink transmission signals, each including a reference signal, from monitor ports provided corresponding to the antenna elements; a channel estimator configured to estimate a channel of the reference signal for each of the antenna elements; and a calibration controller configured to calculate a calibration correction value to be applied to each of the antenna elements based upon channel estimation result.

Abstract translation: 当使用多个天线元件时，适当地进行校准，同时防止处理时间增加。 基站装置具有多个天线元件， 组合器，被配置为从对应于所述天线元件的监​​视端口接收并组合每个包括参考信号的下行链路传输信号; 信道估计器，被配置为估计每个天线元件的参考信号的信道; 以及校准控制器，被配置为基于信道估计结果来计算要施加到每个天线元件的校准校正值。

公开(公告)号：US12302244B2

公开(公告)日：2025-05-13

申请号：US17601614

申请日：2020-04-09

Applicant: NTT DOCOMO, INC.

Inventor： Daiki Takeda ,  Hiroki Harada

IPC: H04W52/02 ,  H04W68/02

Abstract: A base station apparatus including: a transmission unit configured to transmit configuration information indicating whether to place both of a first activation signal and a second activation signal on a resource for placing an activation signal that is a trigger for monitoring a paging occasion, wherein the configuration information implicitly indicates configuration other than configuration indicating whether to place both of the first activation signal and the second activation signal on the resource.

公开(公告)号：US11991619B2

公开(公告)日：2024-05-21

申请号：US17054074

申请日：2018-05-10

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Daiki Takeda ,  Tomoya Ohara ,  Hideaki Takahashi ,  Kazuki Takeda

IPC: H04W48/12 ,  H04W48/16 ,  H04W72/04 ,  H04W72/23

CPC classification number: H04W48/12 ,  H04W48/16 ,  H04W72/23

Abstract: A terminal is disclosed including a receiver that receives configuration information regarding a physical downlink control channel (PDCCH) to configure a common search space; and a processor that monitors downlink control information in the common search space based on the configuration information, wherein the configuration information includes information regarding a search space that is able to be specified by bits in an index of a master information block (MIB) and information regarding a search space index associated with a given search space. In other aspects, a radio communication method, a base station, and a system are also disclosed.

公开(公告)号：US11743094B2

公开(公告)日：2023-08-29

申请号：US16621589

申请日：2017-06-16

Applicant: NTT DOCOMO, INC.

Inventor： Daiki Takeda ,  Hiroki Harada ,  Satoshi Nagata

IPC: H04L27/26 ,  H04W28/06 ,  H04W56/00 ,  H04W72/0446 ,  H04W74/00 ,  H04W74/08 ,  H04W88/08 ,  H04B7/08 ,  H04B14/00

CPC classification number: H04L27/2666 ,  H04B7/0811 ,  H04L27/26025 ,  H04W28/06 ,  H04W56/001 ,  H04W72/0446 ,  H04W74/006 ,  H04W74/08 ,  H04W88/08 ,  H04B14/002

Abstract: A base station apparatus communicates with a plurality of user apparatuses and includes a transmitting unit that transmits a plurality of radio signals to the plurality of user apparatuses, and a control unit that arranges a periodic block including a synchronization signal and system information in one or more radio signals of the plurality of radio signals based on a subcarrier spacing of the radio signal.

公开(公告)号：US11664918B2

公开(公告)日：2023-05-30

申请号：US16764206

申请日：2017-11-16

Applicant: NTT DOCOMO, INC.

Inventor： Daiki Takeda ,  Kazuki Takeda ,  Hiroki Harada ,  Yousuke Sano

IPC: H04J11/00 ,  H04W72/04 ,  H04W72/23

CPC classification number: H04J11/0069 ,  H04W72/23

Abstract: A terminal is disclosed including a receiver that receives a synchronization signal/physical broadcast channel (SS/PBCH) block including a synchronization signal (SS) and a physical broadcast channel (PBCH); and a processor that determines a control resource set based on configuration information in a configuration information set of a plurality of configuration information sets, the configuration information set being associated with information based on the SS/PBCH block, the configuration information being associated with a value of a field in the PBCH, and the configuration information including a plurality of parameters regarding the control resource set. In other aspects, a radio communication method and a base station are also disclosed.

公开(公告)号：US20220353814A1

公开(公告)日：2022-11-03

申请号：US17753994

申请日：2019-09-25

Applicant: NTT DOCOMO, INC.

Inventor： Daiki Takeda ,  HIroki Harada

IPC: H04W52/02 ,  H04W68/02 ,  H04W72/12

Abstract: A terminal includes a reception unit configured to receive configuration information from a base station with respect to at least one of a first wake-up signal and a second wake-up signal associated with a paging occasion, a control unit configured to determine, based on the configuration information, a position in time domain or frequency domain of a resource is which the first wake-up signal or the second wake-up signal is allocated and a communication unit configured to receive, in the resource, the first wake-up signal or the second wake-up signal, and receive a paging associated with the received first wake-up signal or the received second wake-up signal from the base station, wherein the control unit determines, based on a position in time domain and frequency domain of the second wake-up signal indicated by the configuration information, the position in time domain or frequency domain of the resource.

公开(公告)号：US11490455B2

公开(公告)日：2022-11-01

申请号：US16344501

申请日：2017-10-31

Applicant: NTT DOCOMO, INC.

Inventor： Yousuke Sano ,  Kazuki Takeda ,  Kazuaki Takeda ,  Daiki Takeda ,  Daisuke Murayama ,  Satoshi Nagata

IPC: H04W88/06 ,  H04W48/12 ,  H04W74/08 ,  H04L5/14 ,  H04L5/00 ,  H04W72/04 ,  H04W28/06

Abstract: Disclosed is a scheme of transmitting various types of radio signals for which interference between adjacent cells is considered in a radio communication system (for example, dynamic TDD) in which uplink communication and downlink communication can be dynamically switched. A feature of the present invention relates to user equipment including a transceiver that performs transmission and reception of a radio signal with a base station in accordance with a communication scheme in which uplink communication and downlink communication are dynamically switched and a signal processor that processes the radio signal, wherein the transceiver transmits a connection request signal generated by the signal processor in fixed uplink radio resources of the communication scheme.

公开(公告)号：US20220303832A1

公开(公告)日：2022-09-22

申请号：US17596616

申请日：2020-05-27

Applicant: NTT DOCOMO, INC.

Inventor： Daiki Takeda ,  Yuichi Kakishima ,  Koji Hiratsuka ,  Hiroki Ishizuka ,  Akio Gouda ,  Masashi Anzawa ,  Kouta Oguni

IPC: H04W28/24 ,  H04W28/02

Abstract: A communication device includes a control unit that determines whether Quality of Service (QoS) is not to be configured for each of one or more conditions for determining a requirement that determines radio communication quality provided by the QoS or the requirement is to be configured for the QoS; and a communication unit that executes a radio communication in which QoS is not to be provided in a case where the control unit does not configure the QoS, and executes a radio communication in which QoS is to be provided in a case where the control unit configures the requirement for the QoS.

公开(公告)号：US20220256375A1

公开(公告)日：2022-08-11

申请号：US17624726

申请日：2019-07-05

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Satoshi Nagata ,  Daiki Takeda ,  Jing Wang

IPC: H04W24/08 ,  H04W72/04

Abstract: The terminal applies, when using a different frequency band such as FR4 that is different from the frequency band including FR1 and FR2, a wider PDCCH monitoring opportunity interval than when using the frequency band and receives the PDCCH in the monitoring opportunity.

公开(公告)号：US20220141810A1

公开(公告)日：2022-05-05

申请号：US17429231

申请日：2019-02-14

Applicant: NTT DOCOMO, INC.

Inventor： Daiki Takeda ,  Kazuaki Takeda ,  Takayuki Isogawa ,  Tomoya Ohara

IPC: H04W72/04

Abstract: A user equipment includes a control unit that sets an operation mode of the user equipment to an idle mode; and a transmission unit that transmits, while a time alignment retained by the control unit is valid, information indicating presence of the user equipment on each of transmission resources with a predetermined frequency in a time direction, from among a plurality of transmission resources that is preconfigured for transmitting data in the idle mode and arranged in the time direction, wherein the transmission unit stops transmitting the information indicating the presence of the user equipment in response detecting that the time alignment is invalid.