公开(公告)号：US20200221389A1

公开(公告)日：2020-07-09

申请号：US16648339

申请日：2018-07-11

Applicant: NEC Corporation

Inventor： Yohei HASEGAWA

IPC: H04W52/24 ,  H04W52/14 ,  H04W52/36 ,  H04W40/08

Abstract: A communication control device 30 that determines second communication processing that is communication processing that can be executed in parallel with first communication processing that is communication processing that is executed between a transmission terminal and a reception terminal. The communication control device including: a transmission power determination unit 31 that determines conditions for the transmission power of a signal that would not impede the first communication processing, even if a signal that is transmitted by means of the second communication processing is received by the reception terminal; and a destination determination unit 32 that determines a destination for the second communication processing from among terminals at which a signal that is transmitted at transmission power that satisfies the determined conditions could arrive.

公开(公告)号：US20190199833A1

公开(公告)日：2019-06-27

申请号：US16302229

申请日：2017-05-15

Applicant: NEC CORPORATION

Inventor： Yohei HASEGAWA

IPC: H04L29/06 ,  H04L1/18 ,  H04L5/00 ,  H04L29/08

CPC classification number: H04L69/04 ,  H04L1/16 ,  H04L1/18 ,  H04L5/0044 ,  H04L5/0055 ,  H04L29/08 ,  H04L69/163 ,  H04L69/324

Abstract: In order to enable a delay until the output of retransmission data to be reduced, performing transfer of a data piece that is input from a data input unit to a first transfer unit, performing determination of necessity of retransmission of the data piece, when the retransmission is determined to be necessary, performing transfer of a retransmission data piece that is necessary to be retransmitted to a second transfer unit, and in advance of at least any of the data piece remaining in the first transfer unit at a point of time of the transfer of the retransmission data piece to the second transfer unit, performing output of the retransmission data piece in the second transfer unit to a same destination as that of the data piece in the first transfer unit.

公开(公告)号：US20230379052A1

公开(公告)日：2023-11-23

申请号：US18120629

申请日：2023-03-13

Applicant: NEC Corporation

Inventor： Yohei HASEGAWA

IPC: H04B10/077 ,  H04Q11/00

CPC classification number: H04B10/0775 ,  H04Q11/0005

Abstract: A switching device includes an optical communication unit configured to receive an optical communication signal; and a control unit configured to switch a path for the optical communication unit to receive an optical communication signal based on at least one of reception power of the optical communication signal received by the optical communication unit, an error rate of a synchronous signal therefor, an error rate after signal demodulation thereof, an error rate after error correction decoding thereof, and an SN (Signal-to-Noise) ratio of the path for the optical communication signal.

公开(公告)号：US20200008197A1

公开(公告)日：2020-01-02

申请号：US16337770

申请日：2017-09-26

Applicant: NEC CORPORATION

Inventor： Tansheng LI ,  Yohei HASEGAWA ,  Takeo ONISHI ,  Takahiro NOBUKIYO

IPC: H04W72/04 ,  H04L25/02 ,  H04L5/00 ,  H04L27/26 ,  H04W80/06

Abstract: A communication apparatus is provided with a communication part, a response index calculation part, and a determination part. The communication part is configured to be capable of transmitting a packet to the terminal, via frequency carrier(s) of a base station to which the terminal is connected. The response index calculation part calculates a response index of the packet. The determination part determines the number of frequency carrier(s) used by the terminal in accordance with the result of the response index calculation by the response index calculation part. Determining a number of frequency carriers being used includes determining the number of LTE carrier waves being used by the terminal.

公开(公告)号：US20220329319A1

公开(公告)日：2022-10-13

申请号：US17642385

申请日：2019-09-20

Applicant: NEC Corporation

Inventor： Yohei HASEGAWA ,  Hidemi NOGUCHI ,  Shigeyuki YANAGIMACHI

IPC: H04B10/079

Abstract: Provided is a communication device that can deliver an improvement in the communication capacity of communication infrastructure with the quality of communication taken into consideration. A communication device includes an acquiring unit configured to acquire quality information of a communication line extending from a first communication device to a second communication device and including an optical communication line, an estimating unit configured to estimate the quality of communication of the second communication device and determine the required quality of communication of the second communication device based on the quality information, and a controlling unit configured to perform control on communication channels in the optical communication line so that the quality of communication satisfies the required quality of communication.

公开(公告)号：US20160014829A1

公开(公告)日：2016-01-14

申请号：US14771156

申请日：2014-02-27

Applicant: NEC CORPORATION

Inventor： Yohei HASEGAWA

IPC: H04W76/02 ,  H04L29/06 ,  H04L12/26 ,  H04L12/12

CPC classification number: H04W76/12 ,  H04L12/12 ,  H04L29/06 ,  H04L43/0829

Abstract: A communication system includes a communication control apparatus that establishes a communication path between terminals and notifies at least one of the terminals of information about the established communication path. The terminal that has received the notification from the communication control apparatus establishes a communication protocol to be used for communication between the terminals on the basis of the information from the communication control apparatus.

Abstract translation: 通信系统包括建立终端之间的通信路径的通信控制装置，并且向终端中的至少一个通知关于建立的通信路径的信息。 已经从通信控制装置接收到通知的终端基于来自通信控制装置的信息建立用于终端之间的通信的通信协议。

公开(公告)号：US20250156110A1

公开(公告)日：2025-05-15

申请号：US18937254

申请日：2024-11-05

Applicant: NEC Corporation

Inventor： Yohei HASEGAWA

IPC: G06F3/06

Abstract: Realized is a technique of suppressing an increase in processing cost in a case of introducing a new encoding scheme into an existing communication scheme. A transmitting apparatus includes: a memory which includes a first area in which transmission data in an application layer of a communication model is stored and a second area in which transmission data in a lower layer that is below the application layer is stored; a reading section which, in the application layer, reads out, from the first area, a plurality of data segments into which the transmission data in the application layer has been divided; and an encoding and transmitting section which, in the application layer, writes, in the second area, an encoded data segment as the transmission data in the lower layer, while generating the encoded data segment with use of the plurality of data segments.

公开(公告)号：US20240421903A1

公开(公告)日：2024-12-19

申请号：US18744979

申请日：2024-06-17

Applicant: NEC Corporation

Inventor： Yohei HASEGAWA

IPC: H04B10/11

Abstract: A free-space optical communication technique is provided for effectively reducing the occurrence of burst errors caused by the attenuation or loss of packets. A free-space optical communication apparatus includes a light sending and receiving section configured to send and receive communication light and a communication control section configured to control packet communication. The communication control section causes the light sending and receiving section to send either a given packet or first coded information, and then causes the light sending and receiving section to send second coded information which contains the given packet and a packet received by the light sending and receiving section at a point in time at which a first predetermined time elapses.

公开(公告)号：US20230098774A1

公开(公告)日：2023-03-30

申请号：US17910091

申请日：2020-03-27

Applicant: NEC Corporation

Inventor： Yohei HASEGAWA

IPC: H04B10/079 ,  H04B10/29

Abstract: Provided are a communication device, a communication controlling method, and a non-transitory computer-readable medium storing a communication controlling program that each make it possible to grasp the condition of communication quality. A communication device (1) includes acquiring means (2) configured to acquire quality information concerning a burst error that has occurred in an optical communication line. The communication device (1) includes estimating means (3) configured to estimate a first index value based on the quality information acquired by the acquiring means (2), the first index value indicating a degree of influence of the burst error on communication quality in a first communication device.

公开(公告)号：US20220256398A1

公开(公告)日：2022-08-11

申请号：US17616231

申请日：2020-02-05

Applicant: NEC Corporation

Inventor： Yohei HASEGAWA ,  Toshiharu ITO

IPC: H04W28/04 ,  H04L1/00 ,  H04L1/20

Abstract: A communication system includes: a transmitting-side terminal; a transmitting-side communication apparatus configured to receive data transmitted by the transmitting-side terminal and transmit the received data by radio transmission to a receiving-side communication apparatus; and the receiving-side communication apparatus configured to transmit the data received by radio transmission from the transmitting-side communication apparatus to a receiving-side terminal. The transmitting-side terminal includes a control unit configured to control a transmission speed of the data addressed to the receiving-side terminal based on a first error rate that is an error rate of radio transmission from the transmitting-side communication apparatus to the receiving-side communication apparatus and a second error rate that is an error rate of transmission from the transmitting-side terminal to the receiving-side terminal.