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公开(公告)号：US11516787B2
公开(公告)日：2022-11-29
申请号：US16634324
申请日：2017-07-28
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qin Mu , Liu Liu
Abstract: To appropriately communicate a control channel even when communication is performed by applying a configuration of the control channel different from those of legacy LTE systems, a user terminal according to the present invention includes: a reception section that receives a downlink control channel transmitted by each of a plurality of control resource sets; and a control section that controls monitoring of a downlink control channel candidate, and the control section controls allocation of a number of downlink control channel candidates to each of the control resource sets assuming that the number of downlink control channel candidates configured to a combination of the control resource sets in a given time unit does not exceed terminal capability.
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公开(公告)号：US11516782B2
公开(公告)日：2022-11-29
申请号：US16958448
申请日：2017-12-27
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: An aspect of a user terminal of the present invention includes a transmitting section that transmits a plurality of pieces of uplink control information (UCI) corresponding to a plurality of communications by using an uplink control channel or an uplink shared channel, and a control section that controls a transmission of at least a part of the plurality of pieces of UCI, based on a format of the uplink control channel or a maximum coding rate configured for the uplink shared channel when transmission timings of the plurality of pieces of UCI overlap each other.
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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
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.
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公开(公告)号：US11489579B2
公开(公告)日：2022-11-01
申请号：US16970776
申请日：2018-02-19
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: A terminal is disclosed including a transmitter that transmits a beam failure recovery request signal; and a processor that maintains, in a beam failure recovery procedure including the transmission of the beam failure recovery request signal, monitoring of downlink control information for a random access. In other aspects, a radio communication method and a base station are also disclosed.
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公开(公告)号：US11483806B2
公开(公告)日：2022-10-25
申请号：US16482750
申请日：2018-02-02
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata
Abstract: The present invention is designed so that, even when a sequence-based uplink control channel is used, uplink control information is reported properly. A user terminal according to one aspect of the present invention has a control section that determines signals to transmit in a frequency resource for transmitting uplink control information, and a transmission section that transmits the signals in the frequency resource, and, when the signals include a signal sequence to use an orthogonal resource that is associated with the uplink control information, the control section assumes that a bandwidth of the frequency resource is equal to or greater than a predetermined bandwidth.
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Patent Agency Ranking
公开(公告)号：US11444676B2
公开(公告)日：2022-09-13
申请号：US16958452
申请日：2017-12-27
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Chongning Na , Xiaolin Hou
Abstract: To perform a beam failure recovery procedure by using an appropriate radio resource, a user terminal includes a transmitting section that transmits a beam failure recovery request, and a control section that controls transmission of the beam failure recovery request by using at least one of an uplink shared channel, an uplink control channel, a sounding reference signal, and a random access channel indicated by a downlink control channel.
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公开(公告)号：US11425787B2
公开(公告)日：2022-08-23
申请号：US16634433
申请日：2017-07-28
Applicant: NTT DOCOMO, INC.
Inventor： Keisuke Saito , Kazuaki Takeda , Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: A receiving apparatus is disclosed including a receiver that receives a downlink shared channel using a first allocation that supports a first allocation interval and a first allocation start symbol, and a second allocation that supports a second allocation interval and a second allocation start symbol, the first allocation interval and the first allocation start symbol being different from the second allocation interval and the second allocation start symbol, respectively; and a processor that applies a reference signal configuration type, notified by a higher layer, to a first reference signal used in a downlink shared channel that applies the first allocation, and to a second reference signal used in a downlink shared channel that applies the second allocation. In other aspects, a transmitting apparatus is also disclosed.
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公开(公告)号：US11412410B2
公开(公告)日：2022-08-09
申请号：US16307528
申请日：2017-06-08
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata
Abstract: The present invention is designed to maximize the amount of radio resources that can be used in DL, UL or SL in a subframe containing a given DL signal or UL resource. A user terminal has a receiving section that receives downlink control information, and a control section that controls communication by switching between UL communication and DL communication within a subframe based on the downlink control information, and, in a subframe including a signal or a resource in a given communication direction, the control section switches communication in a direction different from the communication direction of the signal or the resource.
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公开(公告)号：US20220216972A1
公开(公告)日：2022-07-07
申请号：US17605931
申请日：2019-04-25
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Shohei Yoshioka , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: A user terminal includes: a receiving section that receives configuration information of a search space set; and a control section that controls monitoring of downlink control information (DCI) of a first format other than formats 0_0 and 0_1 used for scheduling of an uplink shared channel and a second format other than formats 1_0 and 1_1 used for scheduling of a downlink shared channel in the search space set configured based on the configuration information. According to an aspect of the present disclosure, monitoring of downlink control information can be appropriately controlled.
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公开(公告)号：US11381372B2
公开(公告)日：2022-07-05
申请号：US15112722
申请日：2015-01-15
Applicant: NTT DOCOMO, INC.
Inventor： Tooru Uchino , Kazuki Takeda , Hideaki Takahashi , Kazuaki Takeda
Abstract: User equipment for transmitting an uplink control channel in multiple cells simultaneously in a radio communication system where transmission of the uplink control channel in a secondary cell is supported is disclosed. One aspect of the present invention relates to the user equipment, comprising: a transmission and reception unit configured to transmit and receive a radio channel to/from a base station via multiple cells configured for carrier aggregation; a simultaneous transmission availability determination unit configured to determine, in response to occurrence of an event where an uplink control channel is to be transmitted in the multiple cells simultaneously, whether the uplink control channel can be transmitted in the multiple cells simultaneously; and a transmission control unit configured to instruct the transmission and reception unit to transmit the uplink control channel in the multiple cells simultaneously if the uplink control channel can be transmitted in the multiple cells simultaneously and control transmission of the uplink control channel in accordance with transmission priorities corresponding to cell types if the uplink control channel cannot be transmitted in the multiple cells simultaneously.
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