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公开(公告)号：US12004188B2
公开(公告)日：2024-06-04
申请号：US17828098
申请日：2022-05-31
Applicant: NEC Corporation
Inventor： Kenji Koyanagi , Takamichi Inoue , Le Liu , Yoshikazu Kakura
CPC classification number: H04W72/23 , H04L1/0029 , H04L5/0039 , H04L5/0041 , H04L5/0044 , H04L5/0053 , H04L5/006 , H04L5/0064 , H04L5/0092 , H04L5/0094
Abstract: To solve a problem that although the increase of the number of frequency blocks by allocating discontinuous subcarriers (RBs) as in OFDM enables an increase in multi-diversity effect and an improvement in throughput, the number of RB allocation patterns increases with the increase of the number of frequency blocks, resulting in an increase in the amount of information relating to the allocated RBs, the resource block allocation unit is determined when resource blocks discontinuous on the frequency axis are allocated to a terminal, and the number of bits of scheduling information indicating the allocated resource blocks by using Tree Based is set to the number of bits corresponding to the determined allocation unit.
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公开(公告)号：US11962521B2
公开(公告)日：2024-04-16
申请号：US17725760
申请日：2022-04-21
Applicant: NEC Corporation
Inventor： Yoshikazu Kakura
IPC: H04L5/00 , H04W72/23 , H04W72/542
CPC classification number: H04L5/0007 , H04L5/0048 , H04W72/23 , H04W72/542
Abstract: In order to enable control related to radio communication to be performed more appropriately when radio transmission schemes coexist, a radio communication apparatus according to an example aspect of the present invention includes a radio communication processing unit configured to perform communication using a first radio transmission scheme within a frequency band, wherein the radio communication processing unit is configured to perform communication using a second radio transmission scheme within a bandwidth part of the frequency band, radio resources within the bandwidth part being allocable for communication using the second radio transmission scheme.
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23.发明公开公开(公告)号：US20230337248A1
公开(公告)日：2023-10-19
申请号：US18211126
申请日：2023-06-16
Applicant: NEC CORPORATION
Inventor： Kenji KOYANAGI , Takamichi Inoue , Le Liu , Yoshikazu Kakura
CPC classification number: H04W72/23 , H04L1/0029 , H04L5/0039 , H04L5/0041 , H04L5/0044 , H04L5/0053 , H04L5/006 , H04L5/0064 , H04L5/0092 , H04L5/0094
Abstract: To solve a problem that although the increase of the number of frequency blocks by allocating discontinuous subcarriers (RBs) as in OFDM enables an increase in multi-diversity effect and an improvement in throughput, the number of RB allocation patterns increases with the increase of the number of frequency blocks, resulting in an increase in the amount of information relating to the allocated RBs, the resource block allocation unit is determined when resource blocks discontinuous on the frequency axis are allocated to a terminal, and the number of bits of scheduling information indicating the allocated resource blocks by using Tree Based is set to the number of bits corresponding to the determined allocation unit.
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公开(公告)号：US11601939B2
公开(公告)日：2023-03-07
申请号：US17071648
申请日：2020-10-15
Applicant: NEC CORPORATION
Inventor： Takamichi Inoue , Kenji Koyanagi , Le Liu , Yoshikazu Kakura
Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.
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25.发明授权公开(公告)号：US10382178B2
公开(公告)日：2019-08-13
申请号：US15612422
申请日：2017-06-02
Applicant: NEC CORPORATION
Inventor： Takamichi Inoue , Yoshikazu Kakura
Abstract: A reference signal multiplexing method for multiple mobile stations includes: grouping together control signals for the multiple mobile stations; and multiplexing reference signals corresponding to the control signals by CDM over the same bandwidth as that of grouped control signals.
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Patent Agency Ranking
公开(公告)号：US10313072B2
公开(公告)日：2019-06-04
申请号：US15696790
申请日：2017-09-06
Applicant: NEC Corporation
Inventor： Kengo Oketani , Yoshikazu Kakura
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.
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公开(公告)号：US10285192B2
公开(公告)日：2019-05-07
申请号：US15459410
申请日：2017-03-15
Applicant: NEC Corporation
Inventor： Le Liu , Yoshikazu Kakura , Naoto Ishii , Takamichi Inoue
Abstract: A radio communication system includes: a plurality of cells having different scrambling sequences, respectively, wherein at least two cells communicate with at lease two user terminals connected to different serving cells; and a controller which controls the plurality of cells and provides a single scrambling sequence to said at least two cells and said at least two user terminals for control signal transmission and reception.
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28.发明授权公开(公告)号：US10237772B2
公开(公告)日：2019-03-19
申请号：US15965321
申请日：2018-04-27
Applicant: NEC Corporation
Inventor： Hisashi Futaki , Hiroaki Aminaka , Hiroto Sugahara , Yoshikazu Kakura , Kazushi Muraoka
IPC: H04W72/00 , H04W24/08 , H04W76/27 , H04W16/14 , H04W88/02 , H04B17/309 , H04W72/04 , H04W88/10 , H04B17/24 , H04B17/318 , H04B17/382 , H04W24/10 , H04L5/00 , H04W72/08 , H04W88/06
Abstract: A radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).
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公开(公告)号：US10034248B2
公开(公告)日：2018-07-24
申请号：US15022455
申请日：2014-05-30
Applicant: NEC Corporation
Inventor： Yoshikazu Kakura
Abstract: Provided is a control apparatus that can improve throughput of a cell edge user while preventing the throughput of the cell edge user. A control apparatus (10) according to the present invention is disposed in a radio system including communication areas formed by a plurality of cells using the same frequency band. The control apparatus (10) includes a pattern determining unit (110) for defining a cell group including one or more cells formed by radio stations (1) to (6) and determining a time pattern of transmission power to be set for each of a plurality of the cell groups and a communication unit (120) for notifying the radio stations (1) to (6) that form the cells included in the cell group of the time patterns of the transmission power and timing signals indicating switching timings of the transmission power in the radio stations (1) to (6).
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公开(公告)号：US11870714B2
公开(公告)日：2024-01-09
申请号：US17564638
申请日：2021-12-29
Applicant: NEC Corporation
Inventor： Kengo Oketani , Yoshikazu Kakura
IPC: H04L5/00 , H04J3/00 , H04W72/0446 , H04J13/16 , H04W72/20 , H04W72/23 , H04W72/04 , H04J13/00 , H04W28/04
CPC classification number: H04L5/0044 , H04J13/0059 , H04J13/0062 , H04J13/16 , H04L5/0048 , H04W28/04 , H04W72/0446 , H04W72/20 , H04W72/23 , H04B2201/70701 , H04L5/0007 , H04W72/04
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.
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