公开(公告)号：US20240022312A1

公开(公告)日：2024-01-18

申请号：US18218887

申请日：2023-07-06

Applicant: NEC Corporation

Inventor： Jun SHIKIDA ,  Kazushi MURAOKA

IPC: H04B7/08 ,  H04B7/0408

CPC classification number: H04B7/088 ,  H04B7/0408

Abstract: A control apparatus controls a communication with a plurality of wireless terminals using a plurality of beams. The control apparatus calculates an index indicating a relationship between the plurality of beams, on the basis of a first information about a success/failure of a communication with at least two of the plurality of wireless terminals, and a second information indicating a combination pattern of at least two of the plurality of beams that are used a communication whose success/failure is indicated by the first information; and selects, from among the plurality of wireless terminals and the plurality of beams, a combination of at least one wireless terminal serving as a communication target and at least one beam used to communicate with the at least one wireless terminal, on the basis of the index.

公开(公告)号：US20240005754A1

公开(公告)日：2024-01-04

申请号：US18367586

申请日：2023-09-13

Applicant: NEC Corporation

Inventor： Taichi OHTSUJI ,  Kazushi MURAOKA ,  Hiroaki AMINAKA ,  Dai Kanetomo ,  Norio YAMAGAKI ,  Takashi YOSHINAGA

IPC: G08B13/196 ,  G08B25/00 ,  G06V20/52 ,  G06T7/292

CPC classification number: G08B13/19608 ,  G08B13/19613 ,  G08B13/19645 ,  G08B25/009 ,  G06V20/52 ,  G06T7/292 ,  G06T2207/30232

Abstract: A tracking support system includes a position calculating section connected with a plurality of cameras arranged in a predetermined monitoring area to transmit video images imaged by the plurality of cameras and configured to calculate a position of the tracking target based on the video images received from the plurality of cameras; a tracker selecting section configured to select a tracker to be instructed to track the tracking target, based on position information of the terminal received from the terminal and the calculated position of the tracking target; and an information transmitting section configured to transmit information of a distance between the tracking target and the terminal during the tracking of the tracking target to the terminal carried by the selected tracker.

公开(公告)号：US20230044557A1

公开(公告)日：2023-02-09

申请号：US17968028

申请日：2022-10-18

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA ,  Hiroto SUGAHARA ,  Yoshikazu KAKURA ,  Kazushi MURAOKA

IPC: H04W24/08 ,  H04B17/309 ,  H04W88/10 ,  H04W72/08 ,  H04B17/382 ,  H04W16/14 ,  H04L5/00 ,  H04B17/24 ,  H04W88/02 ,  H04W24/10 ,  H04B17/318 ,  H04W72/04 ,  H04W76/27 ,  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).

公开(公告)号：US20210235295A1

公开(公告)日：2021-07-29

申请号：US17229077

申请日：2021-04-13

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA ,  Hiroto SUGAHARA ,  Yoshikazu KAKURA ,  Kazushi MURAOKA

IPC: H04W24/08 ,  H04W76/27 ,  H04B17/309 ,  H04B17/24 ,  H04B17/318 ,  H04B17/382 ,  H04W24/10 ,  H04W16/14 ,  H04W88/02 ,  H04W72/04 ,  H04W88/10 ,  H04L5/00 ,  H04W72/08

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).

公开(公告)号：US20200305165A1

公开(公告)日：2020-09-24

申请号：US16086183

申请日：2017-01-12

Applicant: NEC CORPORATION

Inventor： Masaki INOKUCHI ,  Kazushi MURAOKA

IPC: H04W72/04

Abstract: An apparatus (1 or 3) adjusts a bandwidth, throughput, or radio resource used for device-to-device (D2D) transmission from a remote terminal (1) to a relay terminal (2), based on an amount of pending uplink data in the relay terminal (2) to be transmitted from the relay terminal (2) to a base station (3). In this way, for example, it is possible to contribute to avoiding inconsistency of performance between sidelink transmission from the remote terminal to the relay terminal and uplink transmission from the relay terminal to the base station.

公开(公告)号：US20200274591A1

公开(公告)日：2020-08-27

申请号：US16753697

申请日：2017-10-04

Applicant: NEC Corporation

Inventor： Dileep KUMAR ,  Kazushi MURAOKA ,  Naoto ISHII

IPC: H04B7/06 ,  H04W88/08 ,  H04W24/08 ,  H04W16/28

Abstract: A RRH has multiple antennas in a wireless communication system. The RRH generates a plurality of analog beams to serve at least one user terminal. The RRH includes a parameter calculator, a metric calculator and a beam former. The parameter calculator is configured to calculate at least one parameter including an un-scanned duration for each spatial direction. The metric calculator is configured to calculate at least one metric based on the calculated parameter(s) for each the spatial direction. The beam former is configured to generate analog beams directed towards spatial direction(s) according to the calculated metric(s).

公开(公告)号：US20200245412A1

公开(公告)日：2020-07-30

申请号：US16652731

申请日：2017-10-04

Applicant: NEC Corporation

Inventor： Dileep KUMAR ,  Kazushi MURAOKA ,  Naoto ISHII

IPC: H04W88/08 ,  H04B7/06 ,  H04B7/024 ,  H04W16/28 ,  H04W24/02

Abstract: Provided a Remote Radio Head (RRH) with multiple antennas generating a plurality of analog beams in a wireless communication system serving at least one user terminal, including a metric calculator that calculates at least one metric representing a traffic demand as a function of spatial direction by using at least a signal of each Radio Frequency chain and a beam former that generates analog beams directed towards a spatial direction determined based on the calculated at least one metric.

公开(公告)号：US20200053598A1

公开(公告)日：2020-02-13

申请号：US16340568

申请日：2017-10-03

Applicant: NEC Corporation

Inventor： Kazushi MURAOKA

IPC: H04W28/20 ,  H04L1/00 ,  H04W4/70

Abstract: A radio base station (1) determines allocated radio resources and a Modulation and Coding Scheme (MCS) for each of a plurality of bandwidth-guaranteed radio terminals in a manner such that an amount of radio resources to be allocated to each bandwidth-guaranteed radio terminal is increased and the MCS to be set for each bandwidth-guaranteed radio terminal is reduced as far as possible within a range that allows a transmission rate of each bandwidth-guaranteed radio terminal obtained after the radio resources are allocated to the plurality of bandwidth-guaranteed radio terminals to achieve a desired transmission rate. Accordingly, for example, it is possible to provide adaptive modulation and coding that allows a bandwidth-guaranteed user to achieve a desired transmission rate (or that makes it possible to increase a probability of achieving a desired transmission rate).

公开(公告)号：US20180213438A1

公开(公告)日：2018-07-26

申请号：US15743156

申请日：2016-05-16

Applicant: NEC Corporation

Inventor： Kazushi MURAOKA ,  Hiroto SUGAHARA

IPC: H04W28/06 ,  H04W72/04 ,  H04W92/18 ,  H04W76/14 ,  H04W8/00

CPC classification number: H04W28/06 ,  H04W8/005 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/0446 ,  H04W72/048 ,  H04W76/14 ,  H04W88/06 ,  H04W92/18

Abstract: A transmitting terminal (1A) transmits first D2D control information (522, 523) in one or more subframes within a first subframe pool (511) within a first D2D control period (501) and performs data transmission (531-534) in accordance with the first D2D control information (522, 523) in one or more subframes within a second subframe pool (512) within the first D2D control period (501). The first D2D control information (522, 523) contains a second information element indicating whether the first D2D control information (522, 523) is valid in at least one D2D control period (502, 503) occurring after the first D2D control period (501). This makes it possible to contribute, for example, to reducing failure in reception of scheduling assignment information that is transmitted in a radio resource region for control in a periodic D2D control period and that specifies D2D transmission resources.

公开(公告)号：US20180184436A1

公开(公告)日：2018-06-28

申请号：US15579735

申请日：2016-01-28

Applicant: NEC CORPORATION

Inventor： Taichi OHTSUJI ,  Kazushi MURAOKA ,  Hiroaki AMINAKA

IPC: H04W72/08 ,  H04B7/14 ,  H04W8/00

CPC classification number: H04W72/085 ,  H04B7/14 ,  H04B7/15507 ,  H04B7/2606 ,  H04W8/005 ,  H04W76/10 ,  H04W88/04 ,  H04W92/18

Abstract: A relay selecting apparatus (1, 3 or 5) is configured to select at least one specific relay terminal (2) suitable for a remote terminal (1) from among one or more relay terminals (2) based on a selection criterion that considers a time variation of a device-to-device (D2D) link quality between the remote terminal (1) and each of the one or more relay terminals (2). In this way, it is possible to contribute to improving a relay selection so as to provide a stable relay quality.