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公开(公告)号：US11012101B2
公开(公告)日：2021-05-18
申请号：US16627066
申请日：2018-04-04
Applicant: NTT DoCoMo, Inc.
Inventor： Neng Ye , Xiangming Li , Xiaohang Chen , Xiaolin Hou
Abstract: The present application provides a data transmission method which includes: obtaining statistical characteristics of interferences; determining a total number of coding layers of multi-layer coding and a code rate and transmitting power of each coding layer according to the statistical characteristics of the interferences; processing to-be-transmitted information bits through data re-organization according to the determined total number of coding layers of the multi-layer coding to obtain information bits of each coding layer; coding the information bits of each coding layer respectively according to the determined code rate of each coding layer to obtain a coded data stream of each coding layer; processing the coded data stream of each coding layer through layer mapping and modulation according to the determined transmitting power of each coding layer to obtain a symbol stream to be transmitted; and transmitting the symbol stream to be transmitted.
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公开(公告)号：US10764856B2
公开(公告)日：2020-09-01
申请号：US16323207
申请日：2017-07-07
Applicant: NTT DOCOMO, INC.
Inventor： Neng Ye , Xiangming Li , Anxin Li , Xiaohang Chen , Qun Zhao , Huiling Jiang
Abstract: The present application provides an uplink data transmission method and a user terminal (UE) for executing the method. The method in the present application comprises: A, generating a first random number; B, determining, according to the generated first random number, whether to initiate a random access process; if the random access process is initiated, obtaining a timing advance (TA) value from a base station by means of the random access process; and if the random access process is not initiated, listening for a TA message broadcast by another UE and obtaining a TA value from the TA message; C, transmitting uplink data according to the obtained TA value; D, if the uplink data is successfully transmitted, continuing to perform E, and if the uplink data is unsuccessfully transmitted, returning to A; and E, generating a TA message according to the obtained TA value, and broadcasting the generated TA message. By means of the method in the present application, the time delay and the power consumption can be reduced.
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公开(公告)号：US20200015119A1
公开(公告)日：2020-01-09
申请号：US16490268
申请日：2017-03-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qun Zhao , Xiaohang Chen , Xiaolin Hou , Huiling Jiang
Abstract: The present invention is designed to prevent communication performance from dropping in long TTI when preemption of long TTI by short TTI occurs. According to one aspect of the present invention, a user terminal has a receiving section that receives downlink (DL) data based on downlink control information (DCI) in a first transmission time interval (TTI), a transmission section that transmits delivery acknowledgement information in response to the DL data, and a control section that controls timing of transmitting the delivery acknowledgement information when indication information regarding preemption of the first TTI by a second TTI shorter than the first TTI is received in the receiving section.
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公开(公告)号：US11838941B2
公开(公告)日：2023-12-05
申请号：US17208026
申请日：2021-03-22
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qun Zhao , Xiaohang Chen , Lihui Wang
IPC: H04W4/00 , H04W72/566 , H04W72/1268 , H04W72/23
CPC classification number: H04W72/569 , H04W72/1268 , H04W72/23
Abstract: A terminal is disclosed that includes a receiver that receives a first downlink control information for scheduling a physical uplink shared channel (PUSCH) transmission, and a second downlink control information for notifying a time region and a frequency region in which the PUSCH is not to be transmitted. The terminal further includes a processor that supports reception of the second downlink control information in a slot that is shorter than a slot for transmitting the PUSCH. In other aspects, a radio communication method and a base station are also disclosed.
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公开(公告)号：US10912039B2
公开(公告)日：2021-02-02
申请号：US16326356
申请日：2017-08-16
Applicant: NTT DOCOMO, INC.
Inventor： Xiaohang Chen , Anxin Li , Qin Mu , Liu Liu , Huiling Jiang , Satoshi Nagata
Abstract: Provided are a method for controlling a transmission power, a mobile station and a base station. The method for controlling the transmit power can be applied to a mobile station, and the method includes: acquiring a power control pattern, which is information related to a scheme of controlling the transmission power; determining a reference power control parameter for the mobile station according to the power control pattern; and determining the transmission power of the mobile station based on the reference power control parameter. The method for controlling the transmission power according to the embodiments of the present disclosure enables the user equipment to transmit signals to the base station at a proper transmission power, and further enables the base station side to distinguish different user equipments according to differences of received powers of a plurality of users that adopt Non-orthogonal Multiple Access.
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Patent Agency Ranking
公开(公告)号：US10212709B2
公开(公告)日：2019-02-19
申请号：US15056006
申请日：2016-02-29
Applicant: NTT DoCoMo, Inc.
Inventor： Xiaohang Chen , Anxin Li , Huiling Jiang
Abstract: Embodiments of the present disclosure provide a radio base station, a mobile station and a method for determining a transmitting power. A radio base station, according to an embodiment of the present disclosure, is connected with a plurality of mobile stations, wherein a first mobile station in the plurality of mobile stations can form at least one mobile station pair with other mobile stations. The radio base station comprises: a processing unit, configured to determine an initial value of a power factor of each mobile station pair according to state data of respective mobile stations in the mobile station pair, and determine an adjustment value of the power factor for the first mobile station according to state data of the first mobile station; and a transmitting unit, configured to transmit the initial value of the at least one mobile station pair and the adjustment value to the first mobile station.
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7.发明申请RADIO BASE STATION, MOBILE STATION AND METHOD FOR DETERMINING TRANSMITTING POWER 审中-公开无线电台站，移动站和确定发射功率的方法公开(公告)号：US20160262158A1
公开(公告)日：2016-09-08
申请号：US15056006
申请日：2016-02-29
Applicant: NTT DoCoMo, Inc.
Inventor： Xiaohang Chen , Anxin Li , Huiling Jiang
CPC classification number: H04W72/0473 , H04W52/34 , H04W52/52
Abstract: Embodiments of the present disclosure provide a radio base station, a mobile station and a method for determining a transmitting power. A radio base station, according to an embodiment of the present disclosure, is connected with a plurality of mobile stations, wherein a first mobile station in the plurality of mobile stations can form at least one mobile station pair with other mobile stations. The radio base station comprises: a processing unit, configured to determine an initial value of a power factor of each mobile station pair according to state data of respective mobile stations in the mobile station pair, and determine an adjustment value of the power factor for the first mobile station according to state data of the first mobile station; and a transmitting unit, configured to transmit the initial value of the at least one mobile station pair and the adjustment value to the first mobile station.
Abstract translation: 本公开的实施例提供一种无线电基站，移动台以及用于确定发射功率的方法。 根据本公开的实施例的无线电基站与多个移动台连接，其中多个移动台中的第一移动台可以与其他移动台形成至少一个移动台对。 无线基站包括：处理单元，被配置为根据移动台对中的各个移动台的状态数据确定每个移动台对的功率因数的初始值，并且确定所述移动台对的功率因数的调整值 第一移动台根据第一移动站的状态数据; 以及发送单元，被配置为将所述至少一个移动台对的初始值和所述调整值发送到所述第一移动台。
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公开(公告)号：US11071117B2
公开(公告)日：2021-07-20
申请号：US16326602
申请日：2017-08-18
Applicant: NTT DOCOMO, INC.
Inventor： Xiaohang Chen , Anxin Li , Qin Mu , Liu Liu , Huiling Jiang , Satoshi Nagata
Abstract: Provided are a resource determination method, a base station and a mobile station. A resource determination method performed by the base station according to embodiments of the present invention includes: determining a resource configuration used for uplink transmission for each mobile station group in a plurality of mobile station groups corresponding to the base station; determining a resource offset set used for the plurality of mobile station groups, wherein the resource offset set includes a plurality of resource candidate offsets such that a mobile station connected to the base station determines uplink transmission resources for the mobile station according to the resource configuration of the mobile station group to which the mobile station belongs and resource candidate offsets in the resource offset set.
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公开(公告)号：US20200015251A1
公开(公告)日：2020-01-09
申请号：US16482855
申请日：2018-02-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qun Zhao , Xiaohang Chen , Lihui Wang
Abstract: The present invention is designed so that, even when it is allowed to make interrupts with data in a radio communication system, the deterioration of communication quality can be reduced. A receiving section that receives a UL transmission command, and a control section that controls transmission of UL data, after a predetermined timing, in response to the UL transmission command, are provided, and, when information that indicates puncturing of at least part of the UL data is received, the control section applies puncturing to the UL data. The receiving section receives the information that indicates puncturing, after the UL transmission command is received, by a timing a predetermined period before the transmission of the UL data.
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公开(公告)号：US20190357243A1
公开(公告)日：2019-11-21
申请号：US16483334
申请日：2018-02-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Shimpei Yasukawa , Satoshi Nagata , Xiaohang Chen , Qun Zhao
Abstract: The present invention is designed to provide a user terminal and a radio communication method, whereby adequate communication can be performed when contention-based UL transmission is employed. A user terminal according to the present invention has a transmission section that transmits UL data and a reference signal without a UL transmission command from a radio base station, and control section that controls transmission of the UL data and the reference signal, and the control section applies a reference signal that can identify the user terminal, as the reference signal, and controls transmission of the UL data and the reference signal by using predetermined resources that are configured in advance.
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