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公开(公告)号：US20210298078A1
公开(公告)日：2021-09-23
申请号：US17339694
申请日：2021-06-04
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Satoshi Nagata , Lihui Wang , Liu Liu , Huiling Jiang
Abstract: A terminal is disclosed that includes a processor that controls transmission of a random access preamble based on at least one of information related to one or more PRACH transmission occasions in a time domain and information related to one or more PRACH transmission resources in a frequency domain. The terminal further includes a transmitter that transmits the random access preamble. In other aspects, a base station, radio communication method, and system are also disclosed.
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公开(公告)号：US11122456B2
公开(公告)日：2021-09-14
申请号：US16651118
申请日：2018-09-26
Applicant: NTT DOCOMO, INC.
Inventor： Jing Wang , Hanning Wang , Liu Liu , Wuri A. Hapsari
Abstract: Provided are a method for adjusting mobility-related parameters performed by a user equipment, a user equipment, a method for adjusting mobility-related parameters performed by a base station or a base station. The method for adjusting mobility-related parameters performed by a user equipment includes: determining a speed and a height of the user equipment; and adjusting mobility-related parameters of the user equipment according to the speed and height. The method for adjusting mobility-related parameters performed by a base station includes: receiving location information reported by a user equipment; and adjusting mobility-related parameters of the user equipment according to the location information, wherein the location information is reported by the user equipment in response to occurrence of a predetermined event or at a period related to a speed and/or a height of the user equipment.
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公开(公告)号：US20210144714A1
公开(公告)日：2021-05-13
申请号：US16622678
申请日：2017-06-15
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qin Mu , Liu Liu
Abstract: According to the present invention, when communication is carried out using different formats from those of existing LTE systems, control channels can be communicated properly. A user terminal, according to one aspect of the present invention, includes a receiving section that receives a DL control channel, and a control section that controls monitoring of DL control channel candidates, and the control section determines the aggregation level to monitor and/or the number of DL control channel candidates based on the DCI format and/or the DCI payload size.
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公开(公告)号：US20210136816A1
公开(公告)日：2021-05-06
申请号：US17145916
申请日：2021-01-11
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Satoshi Nagata , Jing Wang , Yu Jiang , Lihui Wang , Liu Liu
Abstract: A terminal is disclosed including a receiver that receives first downlink control information (DCI) indicating SRS transmission and second DCI indicating a listening condition for PUSCH transmission and a processor that, when contiguous transmissions of the SRS transmission and the PUSCH transmission are scheduled, changes the listening condition for following PUSCH transmission based on a listening result for the SRS transmission. In other aspects, a base station, a radio communication method, and a system are also disclosed.
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公开(公告)号：US20210136794A1
公开(公告)日：2021-05-06
申请号：US16473767
申请日：2017-12-26
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Liu Liu , Huiling Jiang
IPC: H04W72/12
Abstract: The present invention is designed so that, even when communication is made using a plurality of transmission time intervals (TTIs), scheduling requests are transmitted adequately. According to one aspect of the present invention, a user terminal has a transmitting/receiving section that transmits and/or receives using a plurality of transmission time intervals (TTIs) of different durations, and a control section that determines a resource to use to transmit a scheduling request (SR) based on at least one of a first TTI and a second TTI having a shorter TTI duration than the first TTI.
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Patent Agency Ranking
公开(公告)号：US10980014B2
公开(公告)日：2021-04-13
申请号：US16337297
申请日：2017-09-29
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Liu Liu , Huiling Jiang , Na Li , Yong Li , Wenbo Wang
Abstract: The present invention is designed so that, when special subframes are allowed to transmit a PUSCH, the transmission of the PUSCH can be controlled adequately. According to the present invention, a user terminal has a receiving section that receives downlink control information (DCI) that schedules an uplink (UL) shared channel, and a control section that controls transmission of the UL shared channel by using a table that associates a subframe, in which the DCI is received, and a timing, at which the UL shared channel is transmitted, per UL/downlink (DL) configuration. The transmission timing in the table is determined based on a special subframe, which is allowed to transmit the UL shared channel, and a predetermined reference value, which is lower than 4 ms.
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公开(公告)号：US10912043B2
公开(公告)日：2021-02-02
申请号：US16334879
申请日：2017-09-21
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Kazuaki Takeda , Satoshi Nagata , Lihui Wang , Qin Mu , Liu Liu
Abstract: The present invention is designed to properly control the transmission of UL signals transmitted in response to DL transmission, in future radio communication systems. A receiving section that receives downlink control information and downlink data, and a control section that controls the transmission of an acknowledgment signal in response to the downlink data, are provided, and the control section controls the timing for transmitting the delivery acknowledgment signal based on timing information included in the downlink control information.
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公开(公告)号：US20200374726A1
公开(公告)日：2020-11-26
申请号：US16637169
申请日：2017-08-10
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Satoshi Nagata , Jing Wang , Liu Liu
Abstract: To measure received quality appropriately. A user terminal according to one aspect of the present invention includes: a receiving section that receives a reference signal in one or more reference signal resources for a measurement of a channel state; and a measurement section that measures a first received power of the reference signal and a second received power in radio resources associated with the one or more reference signal resources, wherein the measurement section derives received quality of a cell, based on the first received power and the second received power.
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公开(公告)号：US20200350982A1
公开(公告)日：2020-11-05
申请号：US16958500
申请日：2018-10-26
Applicant: NTT DOCOMO, INC.
Inventor： Jing Wang , Hanning Wang , Liu Liu
Abstract: Provided are a wireless communication method and corresponding communication devices. The wireless communication method includes: transmitting, by a first communication device, first information to a second communication device, where the first information includes identification information of an aerial user terminal. The first communication device includes a transmitting unit, which is configured to transmit first information to a second communication device, where the first information includes identification information of an aerial user terminal. The second communication device includes a receiving unit, which is configured to receive first information from a first communication device, where the first information includes identification information of an aerial user terminal.
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公开(公告)号：US20200305187A1
公开(公告)日：2020-09-24
申请号：US16088780
申请日：2017-03-30
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Yousuke Sano , Kazuki Takeda , Satoshi Nagata , Qin Mu , Liu Liu
Abstract: A user equipment is disclosed including a processor that selects a parameter set from a parameter set group generated by grouping radio parameters used for transmission of an uplink signal or reception of a downlink signal, and selects a radio parameter to be applied to the uplink signal or the downlink signal from the selected parameter set, and a transceiver that performs the transmission of the uplink signal or the reception of the downlink signal using the selected radio parameter.
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