公开(公告)号：US20230040491A1

公开(公告)日：2023-02-09

申请号：US17968860

申请日：2022-10-19

Applicant: NEC Corporation

Inventor： Kengo OKETANI ,  HisaSHI FUTAKI

IPC: H04W36/00 ,  H04W16/28 ,  H04W36/08 ,  H04B7/06

Abstract: [Object] To make it possible to further increase a possibility of a success in a handover.
[Solution] A first apparatus of the present invention includes: a first communication processing unit configured to transmit reference signals using beamforming; and a second communication processing unit configured to receive a handover message from a source base station of a handover of a terminal apparatus. The handover message includes beam related information related to a beam. The first communication processing unit is configured to receive an access signal of the terminal apparatus based on the beam related information.

公开(公告)号：US20240373298A1

公开(公告)日：2024-11-07

申请号：US18774150

申请日：2024-07-16

Applicant: NEC Corporation

Inventor： Kengo OKETANI ,  Hisashi FUTAKI

IPC: H04W36/00 ,  H04B7/06 ,  H04W16/28 ,  H04W36/08

Abstract: [Object] To make it possible to further increase a possibility of a success in a handover.
[Solution] A first apparatus of the present invention includes: a first communication processing unit configured to transmit reference signals using beamforming; and a second communication processing unit configured to receive a handover message from a source base station of a handover of a terminal apparatus. The handover message includes beam related information related to a beam. The first communication processing unit is configured to receive an access signal of the terminal apparatus based on the beam related information.

公开(公告)号：US20210235445A1

公开(公告)日：2021-07-29

申请号：US17227769

申请日：2021-04-12

Applicant: NEC Corporation

Inventor： Kengo OKETANI

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W28/06 ,  H04W88/02

Abstract: A base station capable of reducing subframe overhead and improving throughput is provided. A base station (10) communicates with terminals (20-0 to 20-3). The base station (10) includes: a controller (12) configured to set, in a variable manner, for each subframe, a cyclic prefix length of a cyclic prefix part to be inserted into the subframe; and a communication unit (11) configured to transmit identification information for identifying the cyclic prefix length set in the subframe by the controller (12) to a terminal to which the subframe has been allocated.

公开(公告)号：US20200052839A1

公开(公告)日：2020-02-13

申请号：US16655493

申请日：2019-10-17

Applicant: NEC Corporation

Inventor： Kengo OKETANI ,  Yoshikazu KAKURA

IPC: H04L5/00 ,  H04J13/00 ,  H04W72/04 ,  H04W28/04 ,  H04J13/16

Abstract: A device and method in which a plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.

公开(公告)号：US20190207727A1

公开(公告)日：2019-07-04

申请号：US16299868

申请日：2019-03-12

Applicant: NEC Corporation

Inventor： Kengo OKETANI ,  Yoshikazu KAKURA

IPC: H04L5/00 ,  H04W72/04 ,  H04J13/16 ,  H04J13/00 ,  H04W28/04

CPC classification number: H04L5/0044 ,  H04B2201/70701 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/16 ,  H04L5/0007 ,  H04L5/0048 ,  H04W28/04 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0446

Abstract: A device and method in which a plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.

公开(公告)号：US20180070354A1

公开(公告)日：2018-03-08

申请号：US15561528

申请日：2016-01-05

Applicant: NEC CORPORATION

Inventor： Kengo OKETANI

IPC: H04W72/04 ,  H04W88/02

CPC classification number: H04W72/0446 ,  H04L5/0023 ,  H04L5/0096 ,  H04L27/2607 ,  H04L27/2646 ,  H04L27/2666 ,  H04W28/06 ,  H04W72/04 ,  H04W72/042 ,  H04W88/02

Abstract: A base station capable of reducing subframe overhead and improving throughput is provided. A base station (10) communicates with terminals (20-0 to 20-3). The base station (10) includes: a controller (12) configured to set, in a variable manner, for each subframe, a cyclic prefix length of a cyclic prefix part to be inserted into the subframe; and a communication unit (11) configured to transmit identification information for identifying the cyclic prefix length set in the subframe by the controller (12) to a terminal to which the subframe has been allocated.

公开(公告)号：US20190053073A1

公开(公告)日：2019-02-14

申请号：US15555269

申请日：2016-03-22

Applicant: NEC CORPORATION

Inventor： Sadafuku HAYASHI ,  Kengo OKETANI

IPC: H04W16/32 ,  H04W36/02 ,  H04W72/04 ,  H04L1/16 ,  H04W76/12 ,  H04W76/15 ,  H04W76/30 ,  H04W76/27

CPC classification number: H04W16/32 ,  H04L1/1614 ,  H04W36/02 ,  H04W72/04 ,  H04W72/0446 ,  H04W76/12 ,  H04W76/15 ,  H04W76/27 ,  H04W76/30 ,  H04W80/08

Abstract: In a method for transferring packet data remaining in a first SeNB to a second SeNB via an MeNB, use of a communication line is inefficient. A base station in a communication system that includes a master cell base station, a secondary cell base station, a core network, and a terminal device, wherein: the base station has a reception unit for receiving, from the master cell base station, downlink user data received from the core network by the master cell base station, and a transmission unit for transmitting the downlink user data received to the terminal device; the reception unit receives, from the master cell base station, switching information indicating that the base station from which the master cell base station receives downlink user data is to be switched; and the transmission unit transmits remaining data to the secondary base station when the reception unit has received the switching information.

公开(公告)号：US20170366315A1

公开(公告)日：2017-12-21

申请号：US15696790

申请日：2017-09-06

Applicant: NEC Corporation

Inventor： Kengo OKETANI ,  Yoshikazu KAKURA

IPC: H04L5/00 ,  H04J13/16 ,  H04W28/04 ,  H04W72/04 ,  H04J13/00

CPC classification number: H04L5/0044 ,  H04B2201/70701 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/16 ,  H04L5/0007 ,  H04L5/0048 ,  H04W28/04 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0446

Abstract: A device and method is which plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.

公开(公告)号：US20170257849A1

公开(公告)日：2017-09-07

申请号：US15329858

申请日：2015-04-17

Applicant: NEC Corporation

Inventor： Kengo OKETANI

IPC: H04W72/04 ,  H04L5/00 ,  H04W76/04 ,  H04L5/14 ,  H04L1/18

CPC classification number: H04W72/042 ,  H04L1/1812 ,  H04L1/1822 ,  H04L1/1835 ,  H04L1/1896 ,  H04L5/001 ,  H04L5/0055 ,  H04L5/14 ,  H04L5/1469 ,  H04W28/04 ,  H04W72/0446 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: A radio terminal (1) determines a maximum number of HARQ processes used for DL transport blocks received in an FDD serving cell (32) based on whether or not the radio terminal (1) is configured to monitor a downlink (DL) control channel of a TDD serving cell (31) for scheduling the FDD serving cell (32). This contributes, for example, to appropriate determination of a maximum number of HARQ processes used for DL transport blocks transmitted in the FDD serving cell when FDD-TDD carrier aggregation (FDD-TDD CA) is configured and when cross-carrier scheduling is configured for DL transmission in the FDD serving cell.

公开(公告)号：US20160204918A1

公开(公告)日：2016-07-14

申请号：US15075929

申请日：2016-03-21

Applicant: NEC Corporation

Inventor： Kengo OKETANI ,  Yoshikazu KAKURA

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0044 ,  H04B2201/70701 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/16 ,  H04L5/0007 ,  H04L5/0048 ,  H04W28/04 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0446

Abstract: A device and method in which a plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.