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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：US20190190763A1
公开(公告)日：2019-06-20
申请号：US16322581
申请日：2017-08-03
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Liu Liu , Huiling Jiang , Can Li , Yong Li , Wenbo Wang
CPC classification number: H04L27/2662 , H04L5/0053 , H04L27/2676 , H04W28/06 , H04W72/04 , H04W72/0413
Abstract: The present invention is designed to properly transmit demodulation reference signals for UL data channels in short TTIs. A user terminal according to one aspect of the present invention has a transmission section that transmits a demodulation reference signal for an uplink (UL) data channel, and a control section that controls the transmission of the demodulation reference signal, and, when the UL data channel is transmitted in a second transmission time interval (TTI), which is comprised of a smaller number of symbols than a first TTI, the control section maps the demodulation reference signal to a symbol that is selected based on the arrangement pattern of the second TTI.
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3.发明授权Radio communication system, radio base station apparatus, user terminal and radio communication method 有权无线通信系统，无线基站装置，用户终端和无线通信方式公开(公告)号：US09439182B2
公开(公告)日：2016-09-06
申请号：US14356312
申请日：2012-11-08
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Liu Liu , Lan Chen , Qin Mu , Wenbo Wang
CPC classification number: H04W72/042 , H04L1/18 , H04L1/1812 , H04L1/1822 , H04L1/1887 , H04L5/001 , H04L5/0053 , H04L5/14 , H04W72/1289
Abstract: The present invention is designed to prevent the decrease of capacity even when the ratio of uplink subframes and downlink subframes is changed in each component carrier in TDD carrier aggregation. With the radio communication method according to the present invention, a radio base station apparatus generates a downlink control channel signal containing downlink control information including carrier indicator field information, and transmits the downlink control channel signal to a user terminal, and the user terminal receives the downlink control channel signal and executes signal processing with respect to the downlink signal in accordance with the downlink control information. In this case, the carrier indicator field information is information which associates a carrier index and the number of subframes to schedule victim subframes.
Abstract translation: 本发明被设计为即使在TDD载波聚合中在每个分量载波中改变上行链路子帧和下行链路子帧的比率时也防止容量的降低。 根据本发明的无线通信方法，无线基站装置生成包含载波指示符字段信息的下行链路控制信息的下行控制信道信号，向用户终端发送下行控制信道信号，用户终端接收 下行链路控制信道信号，并且根据下行链路控制信息执行关于下行链路信号的信号处理。 在这种情况下，载波指示符字段信息是将载波索引和子帧数量相关联以调度受害者子帧的信息。
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4.发明申请RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL, AND RADIO COMMUNICATION METHOD 有权无线电通信系统，无线基站设备，用户终端和无线电通信方法公开(公告)号：US20140241223A1
公开(公告)日：2014-08-28
申请号：US14355645
申请日：2012-11-08
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Liu Liu , Lan Chen , Qin Mu , Wenbo Wang
CPC classification number: H04W72/042 , H04J3/00 , H04L5/001 , H04L5/0053 , H04L5/0094 , H04L5/1469 , H04W72/1289
Abstract: According to the present invention, even when the ratio between uplink subframes and downlink subframes is changed in each component carrier in TDD carrier aggregation, it is still possible to prevent a decrease in capacity. With the radio communication method according to the present invention, a radio base station apparatus generates a downlink control channel signal containing downlink control information including carrier indicator field information, and transmits the downlink control channel signal to a user terminal, and the user terminal receives the downlink control channel signal, and executes signal processing with respect to the downlink signal in accordance with the downlink control information. In this case, the carrier indicator field information is information which associates a carrier index and the index of a secondary cell subframe to be scheduled.
Abstract translation: 根据本发明，即使在TDD载波聚合中每个分量载波中上行子帧与下行子帧之间的比例发生变化的情况下，仍然可以防止容量的降低。 根据本发明的无线通信方法，无线基站装置生成包含载波指示符字段信息的下行链路控制信息的下行控制信道信号，向用户终端发送下行控制信道信号，用户终端接收 下行链路控制信道信号，并且根据下行链路控制信息执行关于下行链路信号的信号处理。 在这种情况下，载波指示符字段信息是将载波索引与要调度的二次小区子帧的索引相关联的信息。
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公开(公告)号：US10470066B2
公开(公告)日：2019-11-05
申请号：US15024865
申请日：2014-09-04
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Liu Liu , Qin Mu , Lan Chen , Lihui Wang , Yong Li , Mugen Peng , Wenbo Wang
Abstract: The present invention is designed so that, in a radio communication system in which a plurality of component carriers (CCs) are used in each small cell within a macro cell, the load of measurements, the amount of information to report and so on in user terminals are reduced. The macro base station of the present invention transmits, to a user terminal, measurement indication information that includes a measurement indication for the received power of a measurement signal of a specific CC in each small cell, and receives, from the user terminal, a measurement report that includes the received power of the measurement signal of the specific CC. Also, the macro base station calculates the received quality of the measurement signals of the plurality of CCs based on the received power of the measurement signal of the specific CC.
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Patent Agency Ranking
公开(公告)号：US20170142667A1
公开(公告)日：2017-05-18
申请号：US15127671
申请日：2015-03-18
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Hiroki Harada , Yuichi Kakishima , Tooru Uchino , Liu Liu , Huiling Jiang , Li Zhao , Yong Li , Mugen Peng , Wenbo Wang
IPC: H04W52/36
CPC classification number: H04W52/365 , H04L5/001 , H04W52/34
Abstract: The present invention is designed to reduce the decrease of uplink throughput in the event a user terminal connects with a plurality of radio base stations. A user terminal (20) according to an example of the present invention provides a user terminal to connect with a plurality of radio base stations including at least a first radio base station and a second radio base station, and this user terminal has a PH report generating section (411) that calculates the PH (Power Headroom) of each radio base station and generates PH reports, and a transmission section (203) that transmits either the PUSCH (Physical Uplink Shared Channel) bandwidth of the first radio base station, a PH report per resource block, or information about the transmission power density, and a PH report for the first radio base station, to the second radio base station.
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公开(公告)号：US11979875B2
公开(公告)日：2024-05-07
申请号：US18046017
申请日：2022-10-12
Applicant: NTT DOCOMO, INC.
Inventor： Qin Mu , Liu Liu , Naoto Okubo , Wei Xu , Yong Li , Wenbo Wang
IPC: H04W72/1268 , H04W72/21 , H04W72/23
CPC classification number: H04W72/1268 , H04W72/21 , H04W72/23
Abstract: A terminal is disclosed including a transmitting unit that transmits, to a base station, a schedule request (SR); and a receiving unit that receives, from the base station, an uplink grant indicating scheduling information for transmitting uplink data, wherein the transmitting unit transmits, to the base station, the uplink data by employing the scheduling information. In other aspects, a base station and a system are also disclosed.
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公开(公告)号：US11350373B2
公开(公告)日：2022-05-31
申请号：US15127671
申请日：2015-03-18
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Hiroki Harada , Yuichi Kakishima , Tooru Uchino , Liu Liu , Huiling Jiang , Li Zhao , Yong Li , Mugen Peng , Wenbo Wang
Abstract: The present invention is designed to reduce the decrease of uplink throughput in the event a user terminal connects with a plurality of radio base stations. A user terminal (20) according to an example of the present invention provides a user terminal to connect with a plurality of radio base stations including at least a first radio base station and a second radio base station, and this user terminal has a PH report generating section (411) that calculates the PH (Power Headroom) of each radio base station and generates PH reports, and a transmission section (203) that transmits either the PUSCH (Physical Uplink Shared Channel) bandwidth of the first radio base station, a PH report per resource block, or information about the transmission power density, and a PH report for the first radio base station, to the second radio base station.
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公开(公告)号：US20160205602A1
公开(公告)日：2016-07-14
申请号：US14913042
申请日：2014-08-15
Applicant: NTT DOCOMO, INC.
Inventor： Tooru Uchino , Yoshihisa Kishiyama , Lan Chen , Liu Liu , Lihui Wang , Yong Li , Wenbo Wang
CPC classification number: H04W16/32 , H04W24/10 , H04W36/02 , H04W36/04 , H04W36/08 , H04W36/28 , H04W74/0833 , H04W76/15 , H04W84/047
Abstract: In switching a radio base station (SeNB) from a radio base station (SeNB#1) to a radio base station (SeNB#2) in an “Inter-node UP aggregation”, forwarding of new downlink data destined for a mobile station (UE) from a radio base station (MeNB) to the radio base station (SeNB#2) is quickly started. A mobile communication method according to the present invention includes: sending, by the mobile station UE, the radio base station (MeNB) a “New data delivery request” that requests forwarding of new downlink data destined for the mobile station (UE) to the radio base station (SeNB#2) , in response to an “SeNB change command”; and forwarding, by the radio base station MeNB, the new downlink data destined for the mobile station (UE) to the radio base station (SeNB#2) , in response to the “New data delivery request”.
Abstract translation: 在“节点间UP聚合”中，从无线基站（SeNB＃1）向无线基站（SeNB＃2）切换无线基站（SeNB）时，转发去往移动台的新的下行链路数据 UE）从无线基站（MeNB）到无线基站（SeNB＃2）。 根据本发明的移动通信方法包括：由移动台UE向无线基站（MeNB）发送请求向目的地为移动台（UE）发送的新的下行链路数据的转发的“新的数据发送请求” 无线基站（SeNB＃2），响应“SeNB变更指令”; 以及响应于“新数据传送请求”，由无线基站MeNB向目的地为移动台（UE）的新的下行链路数据转发给无线基站（SeNB＃2）。
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10.发明申请RADIO BASE STATION APPARATUS, USER TERMINAL, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD 审中-公开无线基站装置，用户终端，无线电通信系统和无线电通信方法公开(公告)号：US20150016370A1
公开(公告)日：2015-01-15
申请号：US14375212
申请日：2013-01-30
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Satoshi Nagata , Liu Liu , Lan Chen , Qin Mu , Wenbo Wang
IPC: H04W72/04
CPC classification number: H04W72/042 , H04B7/0452 , H04L5/001 , H04L5/0023 , H04L5/0053 , H04L5/0094 , H04L25/0224 , H04W72/1273 , H04W72/1289
Abstract: The present invention is designed to allocate radio resources for an extended control channel adequately in a configuration in which a downlink control channel is extended. A radio base station apparatus according to the present invention has a mapping section configured to separate and map, per predetermined frequency domain unit constituting a system band, a common search space, which is a candidate region to arrange common control information that is common between user terminals in, and a UE-specific search space, which is a candidate region to arrange specific control information that is specific to each user terminal in, and a transmission section configured to frequency-division-multiplex with a downlink shared data channel and transmit an extended downlink control channel, in which the common control information is arranged in the common search space and in which the specific control information is arranged in the UE-specific search space, and the mapping section maps the common search space to a plurality of frequency domain units such that the common search space is distributed in the system band.
Abstract translation: 本发明被设计为在扩展下行链路控制信道的配置中适当地分配用于扩展控制信道的无线电资源。 根据本发明的无线电基站装置具有映射部分，被配置为根据构成系统频带的预定频域单元分离和映射作为候选区域的公共搜索空间，以布置用户之间共同的公共控制信息 终端以及UE专用搜索空间，作为用于布置对每个用户终端特定的特定控制信息的候选区域，以及发送部分，被配置为与下行链路共享数据信道进行频分复用，并发送 扩展下行链路控制信道，其中公共控制信息被布置在公共搜索空间中，并且特定控制信息被布置在UE特定搜索空间中，并且映射部分将公共搜索空间映射到多个频域 单位，使得公共搜索空间分布在系统频带中。
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