公开(公告)号：US12081369B2

公开(公告)日：2024-09-03

申请号：US18297079

申请日：2023-04-07

Applicant: Mitsubishi Electric Corporation

Inventor： Tadahiro Shimoda ,  Mitsuru Mochizuki ,  Fumihiro Hasegawa ,  Noriyuki Fukui

IPC: H04L25/02 ,  H04L5/00 ,  H04L27/26 ,  H04W72/1268

CPC classification number: H04L25/0226 ,  H04L5/0048 ,  H04L27/2605 ,  H04W72/1268

Abstract: A user apparatus in a communication system includes: a plurality of user apparatuses each of which is configured to transmit a sounding reference signal (SRS); and a base station configured to wirelessly communicate with the plurality of the user apparatuses. The user apparatus receives, from the base station, configuration information related to a wireless resource of the sounding reference signal allocated to another user apparatus.

公开(公告)号：US20230023578A1

公开(公告)日：2023-01-26

申请号：US17936489

申请日：2022-09-29

Applicant: Mitsubishi Electric Corporation

Inventor： Mitsuru Mochizuki ,  Tadahiro Shimoda ,  Noriyuki Fukui ,  Fumihiro Hasegawa

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/08

Abstract: Provided is a communication system, etc. with low latency and high reliability, under New Radio (NR). A communication system includes a communication terminal device, and a plurality of nodes configured to be connected to the communication terminal device for radio communication and to provide a split bearer for the communication terminal device. The communication terminal device is configured to perform uplink transmission to an uplink transmission node among the plurality of nodes. The uplink transmission node is determined by an uplink transmission node determination process in which a node that provides the uplink transmission from the communication terminal device with lower latency among the plurality of nodes is determined as the uplink transmission node.

公开(公告)号：US10588061B2

公开(公告)日：2020-03-10

申请号：US15830220

申请日：2017-12-04

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Mitsuru Mochizuki ,  Miho Maeda ,  Shinsuke Uga ,  Noriyuki Fukui

IPC: H04W36/00 ,  H04W36/04 ,  H04W48/16

Abstract: A UE in an idle state selects any of a group A, to which a cell of which coverage its own device is in, belongs and a group different from the group A, for example, a group B, and then measures cells belonging to the selected group for selecting a cell being a re-selection destination. A UE in a connected state selects any of the group B to which a cell connected with the UE belongs and a group different from the group B, for example, the group A, and measures cells belonging to the selected group for handover.

公开(公告)号：US10334451B2

公开(公告)日：2019-06-25

申请号：US15842376

申请日：2017-12-14

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Mitsuru Mochizuki ,  Miho Maeda ,  Shinsuke Uga ,  Noriyuki Fukui

IPC: H04W40/00 ,  H04W16/32 ,  H04W16/08 ,  H04W52/02

Abstract: A communication system is provided that, if a large number of small cells are installed, is capable of configuring an operation suitable for small cells through simple operation and administration. If a small cell installed in Step ST1401 judges in Step ST1403 that a coverage macro cell, which includes the small cell in the coverage of the coverage macro cell, is present as a result of neighbor cell search in Step ST1402, notifies the coverage macro cell and another neighbor cell of its own capability in Steps ST1404 and 1405. The coverage macro cell selects a configuration parameter suitable for the capability of the small cell in Step ST1406 and notifies the small cell in Step ST1407. The small cell recognizes an operation mode configured by the coverage macro cell from the configuration parameter notified from the coverage macro cell, and then, starts operating in the operation mode.

公开(公告)号：US09860836B2

公开(公告)日：2018-01-02

申请号：US15111734

申请日：2014-12-16

Applicant: Mitsubishi Electric Corporation

Inventor： Mitsuru Mochizuki ,  Noriyuki Fukui ,  Haruka Suzuki

IPC: H04W52/02 ,  H04W48/08 ,  H04W16/32 ,  H04W48/16 ,  H04W84/04

CPC classification number: H04W52/0206 ,  H04W16/32 ,  H04W24/02 ,  H04W48/02 ,  H04W48/08 ,  H04W48/16 ,  H04W84/045 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/24

Abstract: A communication system capable of preventing unnecessary switching of an energy saving cell between a normal operation state and an energy saving state. An energy saving cell (ES cell) is in a dormant state that is the energy saving state. In this case, when being notified of a wake-up request message from a communication terminal device (UE), the ES cell executes access restriction control to judge whether the UE can access its own cell. If judging that the UE can access its own cell, the ES cell switches on its own cell and shifts from the dormant state to an active state that is the normal operation state.

公开(公告)号：US20170318528A1

公开(公告)日：2017-11-02

申请号：US15655268

申请日：2017-07-20

Applicant: Mitsubishi Electric Corporation

Inventor： Mitsuru Mochizuki ,  Noriyuki Fukui ,  Haruka Suzuki

IPC: H04W52/02 ,  H04W16/32 ,  H04W48/16 ,  H04W48/08 ,  H04W84/04

CPC classification number: H04W52/0206 ,  H04W16/32 ,  H04W24/02 ,  H04W48/02 ,  H04W48/08 ,  H04W48/16 ,  H04W84/045 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/24

Abstract: A communication system capable of preventing unnecessary switching of an energy saving cell between a normal operation state and an energy saving state. An energy saving cell (ES cell) is in a dormant state that is the energy saving state. In this case, when being notified of a wake-up request message from a communication terminal device (UE), the ES cell executes access restriction control to judge whether the UE can access its own cell. If judging that the UE can access its own cell, the ES cell switches on its own cell and shifts from the dormant state to an active state that is the normal operation state.

公开(公告)号：US11921196B2

公开(公告)日：2024-03-05

申请号：US17365417

申请日：2021-07-01

Applicant: Mitsubishi Electric Corporation

Inventor： Yusuke Kitsukawa ,  Noriyuki Fukui

IPC: G01S13/931 ,  G01S7/40 ,  G01S13/00

CPC classification number: G01S13/931 ,  G01S7/4056 ,  G01S2013/9318 ,  G01S2013/93185 ,  G01S2013/932

Abstract: A radar device includes: an electromagnetic noise detecting unit for detecting electromagnetic noise input to an ADC using digital data in a period when no radar signal is transmitted, among digital data output from the ADC; and an observation target detecting unit for detecting an observation target using digital data in a period when the radar signal has been transmitted, among the digital data output from the ADC, and the electromagnetic noise detected by the electromagnetic noise detecting unit.

公开(公告)号：US11832192B2

公开(公告)日：2023-11-28

申请号：US17679988

申请日：2022-02-24

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Noriyuki Fukui ,  Keijiro Take

IPC: H04W52/34 ,  H04W52/24 ,  H04W24/08

CPC classification number: H04W52/241 ,  H04W24/08 ,  H04W52/34

Abstract: The present invention includes: a plurality of antenna sections, each of which to generate base station reception beams and to receive, by using the base station reception beams, one or more signals transmitted from a wireless terminal using one or more terminal transmission beams; a measurement unit that measures reception quality of each of the signals for each of the base station reception beams; and a control unit that groups the base station reception beams into groups in units of the antenna sections, and perform transmission power control on the terminal transmission beams of the wireless terminal in units of the groups, on the basis of a result of measurement of the measurement unit in units of the groups.

公开(公告)号：US11012121B2

公开(公告)日：2021-05-18

申请号：US16486435

申请日：2017-07-28

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Noriyuki Fukui ,  Keijiro Take ,  Mitsuhiro Hashimoto

IPC: H04W16/28 ,  H04W52/14 ,  H04W52/24 ,  H04W52/42 ,  H04W52/02 ,  H04W72/04 ,  H04W74/08 ,  H04B7/0426 ,  H04B7/08 ,  H04B7/06 ,  H04B7/0456 ,  H04B1/04 ,  H04B7/0413 ,  H04L5/00

Abstract: A wireless terminal includes: an antenna that receives a plurality of beams formed by a radio base station; and a power control unit that adjusts transmission power of an uplink signal transmitted from the antenna to the radio base station after beam switching, on the basis of a reception power difference between a downlink signal of a beam used before the beam switching and a downlink signal of a beam to be used after beam switching, the beam switching being switching of a beam used for communication with the radio base station among the beams formed by the radio base station.

公开(公告)号：US10897717B2

公开(公告)日：2021-01-19

申请号：US16061795

申请日：2016-02-29

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Noriyuki Fukui ,  Kazuaki Ishioka ,  Keijiro Take

IPC: H04W16/28 ,  H04W74/08

Abstract: Provided is a beam transmission/reception method, which is executed in a wireless communication system in which a terminal and a base station use a beam to communicate to and from each other. The method includes a step of grouping, by the base station, when the base station is to receive a random access channel signal transmitted as a connection request from the terminal, a plurality of beam directions by combining a main beam direction, which is determined as suitable for reception of the random access channel signal, with one or more beam directions adjacent to the main beam direction, and of receiving the random access channel signal with use of the grouped plurality of beam directions.