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    Terminal, radio communication method, and base station
    82.
    发明授权
    Terminal, radio communication method, and base station 有权

    公开(公告)号：US12137407B2

    公开(公告)日：2024-11-05

    申请号：US16793579

    申请日：2020-02-18

    Applicant: NTT DOCOMO, INC.

    Inventor： Hiroki Harada ,  Kazuaki Takeda ,  Satoshi Nagata ,  Hiroyuki Ishii

    IPC: H04W48/16 ,  H04J11/00 ,  H04W24/10 ,  H04W48/12 ,  H04W16/32

    Abstract: A terminal is disclosed that includes a receiver that receives, in a first cell, information indicating a measurement object including information regarding a parameter of a discovery or measurement signal. The terminal also includes a processor that performs a measurement using the discovery or measurement signal based on the information indicating the measurement object and a transmitter that transmits a result of the measurement, where when the information indicating the measurement object designates a timing that is synchronous with the first cell, the processor performs the measurement in a second cell based on the timing that is synchronous with the first cell. In other aspects, a radio communication method and a base station are also disclosed.

    Enhanced local access in mobile communications using small node devices
    84.
    发明授权
    Enhanced local access in mobile communications using small node devices 有权

    公开(公告)号：US10454829B2

    公开(公告)日：2019-10-22

    申请号：US15470262

    申请日：2017-03-27

    Applicant: NTT DOCOMO, INC.

    Inventor： Hiroyuki Ishii ,  Sean A. Ramprashad ,  Sayandev Mukherjee

    IPC: H04L12/801 ,  H04W28/02 ,  H04W28/08 ,  H04W52/24 ,  H04W52/38 ,  H04W76/14 ,  H04W76/15 ,  H04W36/00

    Abstract: A network device in a wireless communication system includes a first communication circuit that receives a first control-plane message from a base station (BS) over a first communication link; a second communication circuit that transmits user-plane data to a user equipment (UE) over a second communication link established responsive to the first control-plane message; and a third communication circuit that receives the user-plane traffic data from a server over a third communication link. The UE communicates user-plane data with the BS and the network device simultaneously at a predetermined time. The first communication circuit receives a second control-plane message from the BS. The second communication circuit transmits a pilot signal to the UE responsive to the second control-plane message to enable the UE to measure a radio link quality of the second communication link using the pilot signal. The second communication link is maintained, at least in part, based on the radio link quality of the second communication link.

    User terminal, base station and radio communication method
    85.
    发明授权
    User terminal, base station and radio communication method 有权

    公开(公告)号：US10389512B2

    公开(公告)日：2019-08-20

    申请号：US16123314

    申请日：2018-09-06

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Hiroyuki Ishii

    IPC: H04L5/16 ,  H04W72/04 ,  H04W8/24 ,  H04J11/00 ,  H04L5/14 ,  H04L5/00

    Abstract: A user terminal is disclosed that includes a transmitting/receiving section that receives DL signals transmitted from each of an FDD cell and a TDD cell and transmits UL signals to each of the FDD cell and the TDD cell. The user terminal further includes a control section that controls carrier aggregation using the FDD cell and the TDD cell, and controls reporting of capability information regarding simultaneous transmission and reception of the DL signals and UL signals in the transmitting/receiving section, where the control section controls reporting of the capability information regarding simultaneous transmission and reception of the transmitting/receiving section with respect to every combination of a frequency band to use in the FDD cell and a frequency band to use in the TDD cell.

    User terminal, base station and radio communication method
    86.
    发明授权
    User terminal, base station and radio communication method 有权

    公开(公告)号：US10090988B2

    公开(公告)日：2018-10-02

    申请号：US15024976

    申请日：2014-09-19

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuki Takeda ,  Hiroyuki Ishii

    IPC: H04L5/14 ,  H04L5/00 ,  H04W72/04 ,  H04L1/18

    Abstract: The present invention is designed so that uplink transmission is carried out adequately even when CA to apply different duplex modes between multiple cells is executed. A user terminal communicates with an FDD cell and a TDD cell by employing carrier aggregation, and has a receiving section that receives DL signals transmitted from each cell, and a feedback control section that allocates delivery acknowledgement signals in response to the DL signals received, by allocating the delivery acknowledgment signals in a predetermined UL subframe, and, regardless of the cell that is configured as the primary cell, when UL subframes are configured in both the FDD cell and the TDD cell, the feedback control section feeds back the delivery acknowledgement signals by using a UL subframe of one or both of the cells, and, when a UL subframe is configured only in the FDD cell, the feedback control section feeds back the delivery acknowledgement signals by using the UL subframe of the FDD cell.

    Method and apparatus at the physical and link layer for mobile communications
    87.
    发明授权
    Method and apparatus at the physical and link layer for mobile communications 有权

    公开(公告)号：US09949184B2

    公开(公告)日：2018-04-17

    申请号：US15400658

    申请日：2017-01-06

    Applicant: NTT DOCOMO, INC.

    Inventor： Hiroyuki Ishii

    IPC: H04B1/00 ,  H04W36/04 ,  H04W76/02 ,  H04W36/22 ,  H04W36/38

    CPC classification number: H04W36/04 ,  H04W8/082 ,  H04W16/14 ,  H04W28/0215 ,  H04W36/22 ,  H04W36/38 ,  H04W76/10 ,  H04W76/14 ,  H04W76/18 ,  H04W76/20 ,  H04W76/30 ,  H04W84/045

    Abstract: In a cellular telecommunications network, a mobile communication system to offload data traffic from base stations to small-node devices, includes a radio base station, a plurality of small-node devices, a macro-base-station-to-the-small-node-device (BS2D) communication section configured to receive a first control-plane message from the radio base station over a BS2D communication link, a small-node-device-to-user-equipment (D2UE) communication section configured to transmit user-plane data to a user equipment over a wireless D2UE communication link established responsive to the first control-plane message, and a center small-node device. The center small-node device includes a buffer section, a backhaul communication section configured to receive the user-plane traffic data from a server over a backhaul link, and is configured to manage D2UE connections between the plurality of small-node devices and the mobile station, buffer data to be transmitted in downlink and uplink for the plurality of small-node devices, and conduct a link adaptation for the D2UE connections.

    Mobile communication method, radio base station and mobile station
    88.
    发明授权
    Mobile communication method, radio base station and mobile station 有权
    移动通信方式，无线基站和移动台

    公开(公告)号：US09445295B2

    公开(公告)日：2016-09-13

    申请号：US14375338

    申请日：2013-01-30

    Applicant: NTT DOCOMO, INC.

    Inventor： Hideaki Takahashi ,  Kazuaki Takeda ,  Takeshi Nakamori ,  Hiroyuki Ishii

    IPC: H04L12/26 ,  H04W24/10 ,  H04W16/32 ,  H04W36/00

    CPC classification number: H04W24/10 ,  H04W16/32 ,  H04W36/0088

    Abstract: In current LTE, different measurement cycles of a measurement process are set for respective measurement frequencies. A mobile communication method according to the present invention includes: a step A of a radio base station eNB notifying a mobile station UE of a measurement cycle for “Inter-Frequency Measurement” for each measurement frequency; and a step B of the mobile station UE performing out a measurement process in each of cells #11A and #11B having frequencies f2 and f3 different from that of a cell #11 to which the mobile station UE is currently connected, on the basis of the measurement frequency and the measurement cycle for “Inter-Frequency Measurement”.

    Abstract translation: 在当前的LTE中，针对各测量频率设定测量处理的不同测量周期。 根据本发明的移动通信方法包括：无线基站eNB的步骤A，对移动台UE通知每个测量频率的“频率间测量”的测量周期; 以及移动台UE基于当前连接有移动台UE的小区＃11的小区＃11A和＃11B的小区＃11A和＃11B的每个小区进行测量处理的步骤B. “频率间测量”的测量频率和测量周期。

    USER TERMINAL, BASE STATION AND RADIO COMMUNICATION METHOD
    89.
    发明申请
    USER TERMINAL, BASE STATION AND RADIO COMMUNICATION METHOD 审中-公开
    用户终端，基站和无线电通信方法

    公开(公告)号：US20160218853A1

    公开(公告)日：2016-07-28

    申请号：US15024655

    申请日：2014-09-19

    Applicant: NTT DOCOMO, INC.

    Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Hiroyuki Ishii

    IPC: H04L5/16 ,  H04L5/14 ,  H04W72/04 ,  H04J11/00

    CPC classification number: H04L5/16 ,  H04J11/00 ,  H04L5/001 ,  H04L5/14 ,  H04L5/1469 ,  H04W8/24 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/048

    Abstract: The present invention is designed to enable appropriate transmission and reception in user terminals even when CA is executed by applying different duplex modes between multiple cells. A user terminal communicates with an FDD cell and a TDD cell by using carrier aggregation, and has a transmitting/receiving section that receives DL signals transmitted from each cell and transmits UL signals to each cell, and a report control section that controls reporting of capability information regarding simultaneous transmission and reception of the DL signals and UL signals in the transmitting/receiving section. The report control section controls reporting of the capability information regarding simultaneous transmission and reception of the transmitting/receiving section with respect to every combination of a frequency band to use in the FDD cell and a frequency band to use in the TDD cell.

    Abstract translation: 本发明被设计为即使在通过在多个小区之间应用不同的双工模式来执行CA时，也能够在用户终端中进行适当的发送和接收。 用户终端通过使用载波聚合与FDD小区和TDD小区进行通信，并具有发送/接收部分，其接收从每个小区发送的DL信号并向每个小区发送UL信号，以及控制报告能力的报告控制部分 关于发送/接收部分中的DL信号和UL信号的同时发送和接收的信息。 报告控制部分控制关于在FDD小区中使用的频带的每个组合和在TDD小区中使用的频带的发送/接收部分的同时发送和接收的能力信息的报告。

    SECURE RADIO ACCESS WITH INTER-eNB CARRIER AGGREGATION
    90.
    发明申请
    SECURE RADIO ACCESS WITH INTER-eNB CARRIER AGGREGATION 审中-公开
    安全无线接入与中eNB载波聚合

    公开(公告)号：US20150350896A1

    公开(公告)日：2015-12-03

    申请号：US14655638

    申请日：2014-01-06

    Applicant: NTT DOCOMO, INC.

    Inventor： Moo Ryong Jeong ,  Hiroyuki Ishii

    IPC: H04W12/04 ,  H04W36/06 ,  H04W36/00

    CPC classification number: H04W12/04 ,  H04L2463/061 ,  H04W36/0016 ,  H04W36/06 ,  H04W88/08

    Abstract: A system for securing radio access with inter-eNB carrier aggregation including a primary eNB configured to secure transmission with a user equipment. The primary eNB generates a base key and derives a set of derived keys used to secure transmission on a set of radio bearers that correspond to the set of derived keys. The system for securing radio access with inter-eNB carrier aggregation also including a secondary eNB configured to secure transmission with the UE using at least one of the set of derived keys received which corresponds to a radio bearer from the set of radio bearers used by the SeNB.

    Abstract translation: 一种用于利用eNB间载波聚合来保护无线接入的系统，包括被配置为利用用户设备来保证传输的主eNB。 主eNB生成基本密钥并且导出一组派生密钥，用于确保与一组派生密钥相对应的一组无线电承载上的传输。 用于利用eNB间载波聚合来保护无线电接入的系统还包括辅助eNB，其被配置为使用所接收的所述一组导出密钥中的至少一个来保护与所述UE的传输，所述导出密钥对应于来自所述UE的所述无线电承载的一组无线承载 SeNB。

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