公开(公告)号：US20200351684A1

公开(公告)日：2020-11-05

申请号：US16932126

申请日：2020-07-17

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：US20190223231A1

公开(公告)日：2019-07-18

申请号：US16329809

申请日：2017-04-19

Applicant: NEC Corporation

Inventor： Kazushi MURAOKA ,  Hiroaki AMINAKA

IPC: H04W76/11 ,  H04W8/00 ,  H04W4/70 ,  H04W76/27 ,  H04W88/04 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W76/11 ,  H04W4/70 ,  H04W8/00 ,  H04W8/005 ,  H04W72/10 ,  H04W76/27 ,  H04W88/023 ,  H04W88/04 ,  H04W88/085 ,  H04W92/18

Abstract: A base station (2) is configured to receive, from a first wireless terminal (1), a first group identifier indicating a first terminal group, and allocate, to the first wireless terminal (1), a second radio resource, rather than a first radio resource, for device-to-device (D2D) communication performed by the first wireless terminal (1). The first radio resource is a radio resource which has already been allocated to any other wireless terminal which has sent the first group identifier. Meanwhile, the second radio resource is a radio resource which has already been allocated to any other wireless terminal which has sent a second group identifier indicating a second terminal group different from the first terminal group. It is thus, for example, possible to preventing a plurality of D2D communication signals, which are transmitted from multiple wireless terminals to a single wireless terminal, from being transmitted on the same radio resource.

公开(公告)号：US20190159050A1

公开(公告)日：2019-05-23

申请号：US16255408

申请日：2019-01-23

Applicant: NEC Corporation

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

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

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：US20180249357A1

公开(公告)日：2018-08-30

申请号：US15965321

申请日：2018-04-27

Applicant: NEC Corporation (c/o Hibiki IP Law Firm)

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

IPC: H04W24/08 ,  H04W72/04 ,  H04W88/10 ,  H04W72/08 ,  H04B17/24 ,  H04L5/00 ,  H04W76/27 ,  H04B17/382 ,  H04B17/318 ,  H04B17/309 ,  H04W88/02 ,  H04W88/06 ,  H04W16/14

CPC classification number: H04W24/08 ,  H04B17/24 ,  H04B17/309 ,  H04B17/318 ,  H04B17/382 ,  H04L5/0048 ,  H04W16/14 ,  H04W24/10 ,  H04W72/0453 ,  H04W72/085 ,  H04W76/27 ,  H04W88/02 ,  H04W88/06 ,  H04W88/10

Abstract: In one embodiment, 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). This embodiment therefore contributes to simplification of a measurement function which should be supported by the radio terminal when the radio communication system uses a shared frequency (e.g., TVWS) shared by the plurality of radio systems.

公开(公告)号：US20180199206A1

公开(公告)日：2018-07-12

申请号：US15740676

申请日：2016-03-11

Applicant: NEC Corporation

Inventor： Kazushi MURAOKA ,  Taichi OHTSUJI

IPC: H04W16/14 ,  H04L5/00

CPC classification number: H04W16/14 ,  H04L5/0028 ,  H04L5/0048 ,  H04L5/0092 ,  H04W8/005 ,  H04W16/10 ,  H04W92/18

Abstract: A radio terminal (1) selects, from a resource pool in a discovery period, NTX sets of resource blocks for NTX transmissions of a discovery signal based on a first value n1 that is a resource value autonomously selected by the radio terminal (1) or is a parameter received from a base station (2). A frequency domain shift from a second resource block set used in (j−1)th transmission (j is an integer no less than 2) to a first resource block set used in j-th transmission of the discovery signal in the discovery period depends on at least one of the first value n1 and a frequency domain position of the second resource block set in the resource pool. It is thus, for example, possible to attenuate decline in reception quality of a discovery signal due to interference resulting from In-Band Emissions (IBE) when direct discovery of D2D communication is performed.

公开(公告)号：US20180192458A1

公开(公告)日：2018-07-05

申请号：US15739407

申请日：2016-01-19

Applicant: NEC CORPORATION

Inventor： Hiroaki AMINAKA ,  Kazushi MURAOKA ,  Taichi OHTSUJI

IPC: H04W76/14 ,  H04W88/04 ,  H04W76/23 ,  H04W8/00 ,  H04W36/30

CPC classification number: H04W76/14 ,  H04L67/16 ,  H04W8/005 ,  H04W36/03 ,  H04W36/30 ,  H04W76/23 ,  H04W84/22 ,  H04W88/04 ,  H04W92/18

Abstract: A D2D communication control apparatus (10) according to the present invention includes: a communication unit (11) configured to receive determination information that can be used to determine whether a plurality of radio terminals are capable of performing direct communication with another radio terminal; and a selection unit (12) configured to select, in a situation in which a first radio terminal included in the plurality of radio terminals is performing D2D communication with a relay radio terminal that performs cellular communication with a network, a radio terminal in which the determination information between the radio terminal and the relay radio terminal satisfies a predetermined condition among radio terminals capable of performing D2D communication with the first radio terminal, as a preliminary relay radio terminal.

公开(公告)号：US20240062637A1

公开(公告)日：2024-02-22

申请号：US18367833

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：US20240005755A1

公开(公告)日：2024-01-04

申请号：US18368618

申请日：2023-09-15

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 ,  G06T2207/30232 ,  G06V20/52 ,  G06T7/292 ,  G08B25/009

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：US20230419799A1

公开(公告)日：2023-12-28

申请号：US18243893

申请日：2023-09-08

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 ,  G06T2207/30232 ,  G06V20/52 ,  G06T7/292 ,  G08B25/009

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：US20200296745A1

公开(公告)日：2020-09-17

申请号：US16086045

申请日：2017-01-12

Applicant: NEC CORPORATION

Inventor： Masaki INOKUCHI ,  Kazushi MURAOKA

IPC: H04W72/12

Abstract: An apparatus (3) for uplink scheduling is configured to distinguish a plurality of uplink transmissions (120, 121, 122) related to a transfer of data originating from a first remote terminal (1A) from other uplink transmissions. The apparatus (3) further determines allocation of uplink radio resources at least partly based on whether the plurality of uplink transmissions (120, 121, 122) can be scheduled in the same transmission period. In this way, for example, it is possible to contribute to an improvement in performance of a plurality of uplink transmissions related to a transfer of data originating from one remote terminal.