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    USER TERMINAL AND RADIO COMMUNICATION METHOD
    14.
    发明申请
    USER TERMINAL AND RADIO COMMUNICATION METHOD 审中-公开

    公开(公告)号：US20190174462A1

    公开(公告)日：2019-06-06

    申请号：US16324188

    申请日：2017-08-08

    Applicant: NTT DOCOMO, INC.

    Inventor： Hiroki Harada ,  Kazuki Takeda ,  Satoshi Nagata ,  Jiahui Liu ,  Qin Mu ,  Lihui Wang ,  Liu Liu ,  Huiling Jiang

    IPC: H04W72/00 ,  H04W48/10

    Abstract: The present invention is designed to transmit and/or receive system information properly in a radio communication system where multiple numerologies are configured. A user terminal communicates in a radio communication system where multiple numerologies are configured, and this user terminal has a receiving section that receives system information of each of the numerologies via at least one broadcast channel, and a control section that controls reception of the broadcast channel, and the control section controls reception of the broadcast channel that is transmitted in each of the numerologies or that is transmitted selectively in a given numerology.

    USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD
    16.
    发明申请
    USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD 审中-公开

    公开(公告)号：US20170374646A1

    公开(公告)日：2017-12-28

    申请号：US15544909

    申请日：2016-01-21

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuaki Takeda ,  Liu Liu ,  Huiling Jiang ,  Qin Mu

    IPC: H04W68/02 ,  H04W72/04

    CPC classification number: H04W68/02 ,  H04L5/0053 ,  H04L5/0092 ,  H04W4/70 ,  H04W68/005 ,  H04W72/042

    Abstract: The present invention is designed so that communication can be carried out adequately even when the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth. A user terminal, in which the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth, has a receiving section that receives paging information that is transmitted in a predetermined subframe, and a control section that controls the receipt of a downlink shared channel and/or an enhanced downlink control channel by using information about a CFI (Control Format Indicator) value that is acquired based on the paging information, and the receiving section detects a common search space, which is allocated in a fixed starting location in the predetermined subframe, and receives the paging information indicated in the common search space.

    User terminal, radio communication method and radio communication system
    17.
    发明授权
    User terminal, radio communication method and radio communication system 有权

    公开(公告)号：US09648598B2

    公开(公告)日：2017-05-09

    申请号：US14399974

    申请日：2013-05-09

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuaki Takeda ,  Yang Lu ,  Qin Mu ,  Liu Liu ,  Lan Chen

    IPC: H04W72/04 ,  H04L1/18 ,  H04L5/14

    CPC classification number: H04W72/0413 ,  H04L1/18 ,  H04L5/1469 ,  H04W72/042

    Abstract: The present invention is designed to allow effective allocation of PUCCH resources, even when the ratio between uplink subframes and downlink subframes is changed in each cell, in CA by TDD. A user terminal communicates with a radio base station by means of TDD, in a communication band that is broadbanded by CA between a first cell and a second cell, and has a receiving section that receives downlink control information for the first cell and downlink control information for the second cell, allocated to a downlink control channel of the first cell, a retransmission control determining section that determines retransmission control for downlink signals transmitted from each cell, a transmitting section that feeds back retransmission control signals to the radio base station using the PUCCH of the first cell, and a resource selection section that selects the PUCCH resources to feed back the retransmission control signals, and, when the ratio of DL subframes is higher in the second cell than in the first cell, the resource selection section determines the PUCCH resources to allocate the retransmission control signals that correspond to the first cell and the second cell to, by different methods.

    RADIO BASE STATION, USER TERMINAL, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD
    18.
    发明申请
    RADIO BASE STATION, USER TERMINAL, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD 有权
    无线基站，用户终端，无线电通信系统和无线电通信方法

    公开(公告)号：US20150282129A1

    公开(公告)日：2015-10-01

    申请号：US14431329

    申请日：2013-07-31

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuaki Takeda ,  Qin Mu ,  Liu Liu ,  Lan Chen

    IPC: H04W72/04 ,  H04L27/26 ,  H04B7/04

    CPC classification number: H04W72/042 ,  H04B7/0452 ,  H04L1/0046 ,  H04L5/0053 ,  H04L27/2643 ,  H04W88/02 ,  H04W88/08

    Abstract: The present invention is designed to make it possible to adequately form the search space candidates to be used in the blind decoding of downlink control information when the radio resource region for downlink control channels is expanded. The radio base station of the present invention is a radio base station that transmits downlink control information for a user terminal by using an enhanced downlink control channel that is frequency-division-multiplexed with a downlink shared data channel, and has a configuring section that configures, for the user terminal, a plurality of resource sets that are each formed by including a plurality of resource blocks allocated to the enhanced downlink control channel, and a determining section that determines enhanced control channel elements to constitute a plurality of search space candidates such that the plurality of search space candidates of each resource set are all placed in different resource blocks.

    Abstract translation: 本发明被设计为当下行链路控制信道的无线电资源区域被扩展时，能够适当地形成用于下行链路控制信息的盲解码中的搜索空间候选。 本发明的无线基站是通过使用与下行链路共享数据信道进行频分复用的增强下行控制信道来发送用户终端的下行链路控制信息的无线基站，具有配置部 对于用户终端，通过包括分配给增强型下行链路控制信道的多个资源块形成的多个资源集，以及确定部，其确定增强控制信道要素以构成多个搜索空间候选，使得 每个资源集合的多个搜索空间候选者都被放置在不同的资源块中。

    RADIO BASE STATION APPARATUS, USER TERMINAL, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD
    19.
    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。

    Apparatus and system
    20.
    发明授权
    Apparatus and system 有权

    公开(公告)号：US11696306B2

    公开(公告)日：2023-07-04

    申请号：US17366767

    申请日：2021-07-02

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu ,  Huiling Jiang

    IPC: H04W72/23 ,  H04W72/0446

    CPC classification number: H04W72/23 ,  H04W72/0446

    Abstract: An apparatus is disclosed that includes a receiver that receives downlink control information that is used for scheduling of a downlink shared channel, via a downlink control channel in a control resource set. The apparatus also includes a processor that determines a starting location in a time domain of the downlink shared channel based on the downlink control information. The apparatus further includes an output device that performs output based on downlink data signal in the downlink shared channel. When the downlink shared channel overlaps with the control resource set, a resource to which the downlink control information is mapped is not available for the downlink shared channel and wherein a field value in the downlink control information indicates an index for designating one of a plurality of starting locations that are provided in advance. In another aspect, a system is also disclosed.

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