公开(公告)号：US20240129849A1

公开(公告)日：2024-04-18

申请号：US18277888

申请日：2021-03-31

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Kosel KOBAYASHI ,  Kei YANAGISAWA ,  Kazuki OGATA ,  Jun TAKASAWA

IPC: H04W52/02 ,  H04W4/44

CPC classification number: H04W52/0203 ,  H04W4/44

Abstract: The present disclosure makes it possible to effectively reduce power consumption of a roadside wireless communication apparatus. A determination means (21) determines whether a moving body exists on a roadway leading to an intersection. A control means (22) controls a transmission output of a wireless signal being output from a wireless communication apparatus (30), based on a lighting state of a traffic light installed at the intersection and a determination result of the determination means (21).

公开(公告)号：US20240196320A1

公开(公告)日：2024-06-13

申请号：US18284632

申请日：2021-03-29

Applicant: NEC Corporation

Inventor： Kazuki OGATA ,  Hiroaki AMINAKA ,  Kosel KOBAYASHI ,  Kei YANAGISAWA ,  Jun TAKASAWA

IPC: H04W48/20 ,  G08G1/065 ,  H04W4/44

CPC classification number: H04W48/20 ,  G08G1/065 ,  H04W4/44

Abstract: A communication terminal includes a communication part for selecting one of a first antenna and a second antenna and for being capable of communicating via a wireless connection with a base station connected to the first antenna and the second antenna, the first antenna being installed at a first location across a first road, the second antenna being installed at a second location across a second road intersecting the first road; a traffic flow detection part for detecting a traffic flow on at least one of the first road and the second road; and a selection part for selecting an antenna to be connected from the first antenna and the second antenna depending on the traffic flow.

公开(公告)号：US20240147203A1

公开(公告)日：2024-05-02

申请号：US18278743

申请日：2021-03-31

Applicant: NEC Corporation

Inventor： Kosei KOBAYASHI ,  Tetsuji KAWATSU ,  Kazuki OGATA ,  Yuji SATO ,  Tetsuya TAKAKI ,  Jun TAKASAWA ,  Hiroaki AMINAKA ,  Kei YANAGISAWA

IPC: H04W4/46 ,  H04W64/00

CPC classification number: H04W4/46 ,  H04W64/00

Abstract: In one aspect, a reception means receives, from a roadside device, first information transmitted from a mobile body by using a first wireless communication. An identification means identifies, based on information of a terminal apparatus to be managed by an information management means, the terminal apparatus being located in the vicinity of the mobile body that has transmitted the first information. A transmission means transmits second information generated based on the first information, to the terminal apparatus identified by the identification means via a second wireless communication.