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：US20230099323A1

公开(公告)日：2023-03-30

申请号：US17911470

申请日：2021-03-16

Applicant: NEC Corporation

Inventor： Yuya WADA ,  Hiroaki AMINAKA

IPC: H04B17/26 ,  H04W24/02 ,  H04B17/336 ,  H04B17/318

Abstract: In order to enable a precedent base station to perform appropriate processing on interference by a subsequent base station in a mobile communication system, a base station 201 includes an interference detecting unit 350 configured to obtain history information related to a received signal received by the base station 201 from a second base station installed after installation of the base station 201 and to detect interference affecting the base station 201 by the second base station, based on the history information.

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：US20220330101A1

公开(公告)日：2022-10-13

申请号：US17849806

申请日：2022-06-27

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA

IPC: H04W36/00 ,  H04W36/08 ,  H04W36/30 ,  H04B7/024 ,  H04W76/15 ,  H04W76/28

Abstract: A radio network (6) and a radio terminal (4) are configured to, when the radio terminal (4) is using a first cell (10) served by a first radio station (1) as a primary cell and a second cell (20) served by a second radio station (2) as a secondary cell, change the secondary cell form the second cell (20) to a third cell (30) while keeping communication status information regarding the radio terminal (4) on the second cell (20). It is thus, for example, possible to enable a communication service in the secondary cell to be continued after the secondary cell is changed when the radio terminal which is simultaneously using a plurality of cells served by different radio stations changes the secondary cell from a cell of one radio station to a cell of another radio station.

公开(公告)号：US20220256380A1

公开(公告)日：2022-08-11

申请号：US17729222

申请日：2022-04-26

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA

IPC: H04W24/08 ,  H04W24/10 ,  H04W76/27 ,  H04L43/06

Abstract: A radio terminal, which has a function to collect and report measurement information designated by a radio network, comprises: means for receiving collection/reporting control information related to the radio terminal's execution of at least one of the collection of measurement information and the reporting of the measurement information to the radio network; and control means for executing, based on the collection/reporting control information, at least one of the collection and the reporting if execution determination information, which is related to at least one of the collection of the measurement information and the reporting of the measurement information to be executed by the local terminal, satisfies a given determination criterion.

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：US20200229066A1

公开(公告)日：2020-07-16

申请号：US16833967

申请日：2020-03-30

Applicant: NEC CORPORATION

Inventor： Hiroaki AMINAKA

IPC: H04W40/22 ,  H04B7/155 ,  H04W24/04 ,  H04W76/27 ,  H04W76/10 ,  H04W60/00 ,  H04B7/14 ,  H04L12/24

Abstract: A mobile communication system includes at least one upper radio station (1) and a relay station (2). The relay station (2) performs a radio relay between a lower radio station (3) and the upper radio station (1). The relay station (2) is configured to attach, when an attaching to a first upper radio station included in attaching configuration information indicating an upper radio station to which the relay station (2) should attach is unsuccessful, to a second upper radio station different from the first upper radio station, and to notify a network (4 and 5) of notification information via the second upper radio station, the notification information indicating that the attaching to the first upper radio station is unsuccessful.

公开(公告)号：US20200053808A1

公开(公告)日：2020-02-13

申请号：US16660033

申请日：2019-10-22

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA

IPC: H04W76/15 ,  H04W72/04 ,  H04L5/00

Abstract: A radio terminal (3) has a function of establishing a second radio connection on a second cell (20) operated by a second radio station (2) while a first radio connection on a first cell (10) operated by a first radio station (1) is established. The first radio station (1) sets up a control bearer for transferring at least a control signal regarding the radio terminal (3) between an upper network (4) and the first radio station (1). Further, the first radio station (1) is configured to trigger setup of a second bearer for transferring user data of the radio terminal (3) between the upper network (4) and the second radio station (2). It is thus for example possible to enable a single radio terminal to simultaneously set up bearers on cells of a plurality of radio stations, in order to achieve carrier aggregation of cells operated by different radio stations.

公开(公告)号：US20190090188A1

公开(公告)日：2019-03-21

申请号：US16193429

申请日：2018-11-16

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA

IPC: H04W52/02 ,  H04L1/00 ,  H04W48/00 ,  H04W48/12 ,  H04L5/00 ,  H04W72/04

Abstract: A radio terminal (3) can perform carrier aggregation using a first cell (10) of a first radio station (1) and a second cell (20) of a second radio station (2). The first radio station (1) or the second radio station (2) transmits constraint information to the radio terminal (3). The constraint information contains an information element necessary to specify a reception constraint and/or transmission constraint related to the first cell (10) and/or the second cell (20) when the carrier aggregation is performed. The reception/transmission constraint is a constraint related to downlink signal reception/uplink signal transmission by the radio terminal over one or more subframe periods of the primary cell (10) and the secondary cell (20). It is thus, for example, possible to contribute to reduction in wasteful power consumption in the radio terminal in the carrier aggregation of a plurality of cells served by different radio stations.

公开(公告)号：US20180255545A1

公开(公告)日：2018-09-06

申请号：US15969443

申请日：2018-05-02

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroto SUGAHARA ,  Hiroaki AMINAKA

IPC: H04W72/04 ,  H04W28/08 ,  H04B7/02

Abstract: A radio communication system includes a first base station that manages a first cell (110), a second base station (12) that manages a second cell (120), and a radio terminal (2). The radio terminal (2) supports dual connectivity involving a bearer split in which a first network bearer between the radio terminal (2) and a core network (3) is split over the first base station (11) and the second base station (12). The first base station (11) receives, from the second base station (12), bearer split status information about communication of the first network bearer in the second base station (12), and performs control of an access stratum related to the first network bearer. It is thus possible to contribute, for example, to an improvement in control of an access stratum when dual connectivity involving a bearer split is performed.