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公开(公告)号：US11503621B2
公开(公告)日：2022-11-15
申请号：US16609561
申请日：2018-03-07
Applicant: NTT DoCoMo, Inc.
Inventor： Qin Mu , Liu Liu , Naoto Okubo , Wei Xu , Yong Li , Wenbo Wang
Abstract: Provided are methods for transmitting and receiving uplink data, a user equipment and a base station. The method for transmitting uplink data by a user equipment includes: transmitting to a base station a scheduling request (SR); receiving, from the base station, an uplink grant indicating scheduling information for transmitting uplink data, wherein the scheduling information is allocated by the base station according to a volume of the uplink data, the volume being determined by the SR; and transmitting to the base station the uplink data by employing the scheduling information. In this way, the present invention reduces power consumption and time delay during an uplink data transmission process.
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公开(公告)号：US20190230635A1
公开(公告)日：2019-07-25
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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13.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，无线通信方式等公开(公告)号：US09439181B2
公开(公告)日：2016-09-06
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：US20160242061A1
公开(公告)日：2016-08-18
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
CPC classification number: H04W24/10 , H04L5/001 , H04L5/0023 , H04L5/0048 , H04L5/005 , H04L5/0057 , H04L5/006 , H04L5/0073 , H04L5/0098 , H04W72/0413 , H04W72/042 , H04W84/045
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.
Abstract translation: 本发明被设计为使得在其中在宏小区内的每个小小区中使用多个分量载波（CC）的无线电通信系统中，测量的负载，用户要报告的信息量等 端子减少。 本发明的宏基站向用户终端发送包含每个小小区中特定CC的测量信号的接收功率的测量指示的测量指示信息，并从用户终端接收测量 报告包括特定CC的测量信号的接收功率。 此外，宏基站基于特定CC的测量信号的接收功率来计算多个CC的测量信号的接收质量。
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Patent Agency Ranking
15.发明申请公开(公告)号：US20160174155A1
公开(公告)日：2016-06-16
申请号：US14890431
申请日：2014-04-17
Applicant: NTT DOCOMO, INC.
Inventor： Satoshi Nagata , Liu Liu , Lan Chen , Lihui Wang , Yong Li , Wenbo Wang
CPC classification number: H04W52/0235 , H04W16/32 , H04W52/02 , H04W76/15 , H04W76/28 , Y02D70/1262 , Y02D70/1264 , Y02D70/23 , Y02D70/24
Abstract: The present invention provides a discontinuous reception method in a radio communication system in which carrier aggregation is performed by aggregating a component carrier of a macro cell and a component carrier of a small cell. The discontinuous reception method has the steps of: classifying a radio bearer configured in a user terminal into an RB group 1 including a radio bearer associated with the component carrier of the macro cell or an RB group 2 including a radio bearer associated with the component carrier of the small cell; transmitting, to the user terminal, a DRX set 1 to use in discontinuous reception of data via a radio bearer of the RB group 1 and a DRX set 2 to use in discontinuous reception of data via a radio bearer of the RB group 2.
Abstract translation: 本发明提供一种无线通信系统中的不连续接收方法，其中通过聚合宏小区的分量载波和小小区的分量载波来执行载波聚合。 不连续接收方法具有以下步骤：将用户终端中配置的无线承载分类为包括与宏小区的分量载波相关联的无线承载的RB组1或包括与分量载波相关联的无线承载的RB组2 的小细胞; 向所述用户终端发送经由所述RB组1的无线电承载的非连续接收数据的DRX组1和经由所述RB组2的无线电承载来不连续地接收数据的DRX组2。
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公开(公告)号：US20230075481A1
公开(公告)日：2023-03-09
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
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：US20200213040A1
公开(公告)日：2020-07-02
申请号：US15751620
申请日：2016-08-08
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Liu Liu , Huiling Jiang , Qin Mu , Zhen Liao , Yong Li , Wenbo Wang
Abstract: In order that a user can perform a random access procedure suitable for a case where a usage band is limited to a frequency block that is a part of a system band, a user terminal according to one aspect of the present invention is a user terminal with a usage band limited to a frequency block that is a part of a system band, including a transmission section that transmits a random access signal with repetition, a reception section that receives a response signal to the random access signal with repetition, and a control section that detects a repetition number of the response signal, in which the reception section receives information for detection of the repetition number of the response signal and the control section detects the repetition number of the response signal based on a repetition level of the random access signal and the information for detection.
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公开(公告)号：US09924380B2
公开(公告)日：2018-03-20
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”.
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19.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：US20140348038A1
公开(公告)日：2014-11-27
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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