公开(公告)号：US20250016111A1

公开(公告)日：2025-01-09

申请号：US18890598

申请日：2024-09-19

Applicant: DENSO CORPORATION

Inventor： Tsuneo NAKATA

IPC: H04L47/62 ,  H04L47/125 ,  H04L47/283

Abstract: A transmission device transmits packets through communication paths with load distribution. The device includes a calculation unit that, based on data amounts of packets held in order of arrival and line speeds of the paths, calculates predicted delays, which are time periods required for arrival of the packets at a reception device when the packets are transmitted through the paths; a selection unit that, when selecting the paths that transmit the packets so that the packets are received by the reception device in the order of arrival, as a packet to be transmitted through a high-latency communication path having the largest predicted delay when packets having the same data amount are transmitted, selects a packet that is later in the order of arrival than a packet selected based on the predicted delay; and a transmission unit that transmits the packets through the respective selected paths.

公开(公告)号：US20240205310A1

公开(公告)日：2024-06-20

申请号：US18593458

申请日：2024-03-01

Applicant: DENSO CORPORATION

Inventor： Naoki IWATA ,  Tsuneo NAKATA

IPC: H04L69/22 ,  H04L49/901 ,  H04L49/9023

CPC classification number: H04L69/22 ,  H04L49/901 ,  H04L49/9023

Abstract: In a communication apparatus, a buffer offset calculator calculates a buffer offset for a transmission-ready state k-th communication unit in accordance with a total number of at least one of data packets that is (i) transmittable by at least one m-th communication unit in the N communication units except for the k-th communication unit and (ii) completely received by the recipient device within a data transmission period of the communication network corresponding to the k-th communication unit (m is each of variables 1 to N except for k). A data packet allocator selects, in a queue of the data packets stored in the transmission buffer, one of the data packets, a beginning of the selected data packet being located offset by the buffer offset relative to a beginning of the queue of the data packets. The data packet allocator allocates the selected data packet to the k-th communication unit.

公开(公告)号：US20230247540A1

公开(公告)日：2023-08-03

申请号：US18298272

申请日：2023-04-10

Applicant: DENSO CORPORATION

Inventor： Daiki MAEMOTO ,  Tsuneo NAKATA ,  Shigeki KAWAI

IPC: H04W48/16 ,  H04W48/20 ,  G01S5/02

CPC classification number: H04W48/16 ,  H04W48/20 ,  G01S5/02521

Abstract: A radio wave map generator device includes a receiving unit, a communication speed calculation unit, a connection probability calculation unit, and a storage unit. The receiving unit is configured to receive pieces of probe information each of which contains location information, propagation environment information, and external communication device identification information. The communication speed calculation unit is configured to calculate a first communication speed, and a second communication speed. The connection probability calculation unit is configured to calculate a first connection probability, and a second connection probability. The storage unit is configured to store the location information, external communication device identification information, the first communication speed, the second communication speed, the first connection probability, and the second connection probability.

公开(公告)号：US20230232271A1

公开(公告)日：2023-07-20

申请号：US18187581

申请日：2023-03-21

Applicant: DENSO CORPORATION

Inventor： Shigeki KAWAI ,  Tsuneo NAKATA

IPC: H04W28/02 ,  H04W72/0446

CPC classification number: H04W28/0226 ,  H04W28/0236 ,  H04W72/0446

Abstract: A data transmission device includes a wireless communication unit that wirelessly communicates with an external communication device, a travel route information acquirer that acquires a future travel route of a moving object, a travel route, a propagation environment information acquirer that acquires propagation environment information of a radio wave propagation path used in wireless communication, a speed information acquisition unit that acquires the moving speed of a moving object, and a converter that converts a relationship between the travel route and propagation environment information into a plurality of data slots each defined by the communication speed per unit time; a transmission instructor that instructs the wireless communication unit to transmit the data allocated to the data slot.

公开(公告)号：US20230224870A1

公开(公告)日：2023-07-13

申请号：US18147027

申请日：2022-12-28

Applicant: DENSO CORPORATION

Inventor： Tsuneo NAKATA

IPC: H04W72/02 ,  H04W40/24 ,  H04B7/155

CPC classification number: H04W72/02 ,  H04W40/248 ,  H04B7/15542

Abstract: A relay device includes: a storage unit storing a correspondence table that correlates header information with a relay resource, the relay resource implementing a communication request class defined based on the header information; a data acquisition unit acquiring the data transmitted from the transmission source device as acquired data; a relay resource determination unit determining a relay resource for the acquired data based on header information included in the acquired data and the correspondence table; and a data transmission unit transmitting the acquired data to the destination device using the relay resource determined by the relay resource determination unit.

公开(公告)号：US20200186980A1

公开(公告)日：2020-06-11

申请号：US16794712

申请日：2020-02-19

Applicant: DENSO CORPORATION

Inventor： Takahiro FURUYAMA ,  Tsuneo NAKATA

IPC: H04W4/40 ,  H04W4/80 ,  H04W68/00 ,  H04W60/00

Abstract: A moving body communication system includes: a plurality of user apparatuses each used on a moving body; and a server that is configured to distribute, to at least one of the user apparatuses as a requester, commonly used data as data used commonly by the plurality of the user apparatuses, based on a request from the at least one of the user apparatuses. The user apparatus as the requester is configured to execute processing for acquisition of the commonly used data from an already-acquiring apparatus positioned around the requester via a narrow-area communication in response to that acquirability of the commonly used data via the narrow-area communication is notified as a response from the server to a distribution request.

公开(公告)号：US20200028834A1

公开(公告)日：2020-01-23

申请号：US16511244

申请日：2019-07-15

Applicant: DENSO CORPORATION ,  TOHOKU UNIVERSITY

Inventor： Tsuneo NAKATA ,  Naoki IWATA ,  Masao SAKAI ,  Masayuki FUKUMITSU ,  Shingo HASEGAWA ,  Shuji ISOBE ,  Junya IWAZAKI ,  Eisuke KOIZUMI

IPC: H04L29/06 ,  H04L9/08 ,  H04L9/06

Abstract: An information intermediating apparatus in an information transaction system including an information providing apparatus, an information acquiring apparatus and the information intermediating apparatus connected to a communication network, includes: a first receiver that receives second information, of first and second information necessary for restoring transaction object information, and first feature information indicating a feature of the first information; a second receiver that receives second feature information from the information acquiring apparatus, the second feature information being calculated from the first information transmitted to the information acquiring apparatus from the information providing apparatus; a feature information determination unit that determines whether an identity is present between the first feature information and the second feature information; and a transmitter that transmits the second information to the information acquiring apparatus, when the feature information determination unit determines that the identity is present between the first feature information and the second feature information.

公开(公告)号：US20190053011A1

公开(公告)日：2019-02-14

申请号：US16161905

申请日：2018-10-16

Applicant: DENSO CORPORATION

Inventor： Tsuneo NAKATA

IPC: H04W4/029 ,  H04W72/04 ,  H04W4/40 ,  H04L25/03 ,  H04W28/26

CPC classification number: H04W4/029 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03292 ,  H04W4/40 ,  H04W28/26 ,  H04W72/048

Abstract: In a mobile communication system, a mobile communication apparatus in a vehicle includes a selected resource antenna permitting communication using a selected resource, establishing wireless communication with a target communication apparatus. The mobile communication system includes a propagation path characteristic acquirer section and a resource selector section. The propagation path characteristics acquirer section acquires propagation path characteristics information in association with a future communication position, the propagation path characteristics information being about propagation path characteristics between (i) the target communication apparatus and (ii) a reference antenna equal to the selected resource antenna in antenna characteristics including an antenna format. The resource selector section, based on the propagation path characteristics information, selects a resource to be used in communication at the future communication position before the selected resource antenna of the mobile communication apparatus comes to be placed at the future communication position.

公开(公告)号：US20180255466A1

公开(公告)日：2018-09-06

申请号：US15972784

申请日：2018-05-07

Applicant: DENSO CORPORATION

Inventor： Tsuneo NAKATA

IPC: H04W16/18 ,  H04W4/02 ,  H04W72/04 ,  H04B7/155 ,  H04W36/32

CPC classification number: H04W16/18 ,  H04B7/15542 ,  H04W4/023 ,  H04W4/027 ,  H04W4/029 ,  H04W36/32 ,  H04W72/048

Abstract: In a wireless communication system, a mobile communication apparatus judges the reception quality available at its current position for direct reception of information transmitted from a fixed wireless station, with the judgement based upon the current position and upon a reception quality map expressing a relationship between reception positions and corresponding reception quality values. If the reception quality at the current position is judged to be sufficient, direct reception is executed, while otherwise, a limitation is placed upon such direct reception, for example by postponing the direct reception until reaching a icy position at which the reception quality will be sufficient.

公开(公告)号：US20140364088A1

公开(公告)日：2014-12-11

申请号：US14294358

申请日：2014-06-03

Applicant: DENSO CORPORATION

Inventor： Tsuneo NAKATA

IPC: H04W68/00

CPC classification number: H04W68/005 ,  G06Q10/10 ,  H04L51/24

Abstract: A message notification system includes a message transmitting apparatus and a message receiving apparatus. In the message transmitting apparatus, transmission data including an acquired message is generated and transmitted. In the message receiving apparatus, the transmission data is received. When the transmission data is received, the message receiving apparatus notifies a receiving-side user of the message in the transmission data. The message transmitting apparatus sets whether nor a receiving-side user is to be re-notified of the message in the transmission data, and sets a re-notification condition for re-notification of the message. When receiving the transmission data with the setting that re-notification is required, the message receiving apparatus stores the message in the transmission data in association with the re-notification condition of the message, determines whether or not the re-notification condition is met, and notifies the receiving-side user of the message which is determined that the re-notification condition is met.

Abstract translation: 消息通知系统包括消息发送装置和消息接收装置。 在消息发送装置中，生成并发送包含获取消息的发送数据。 在消息接收装置中，接收发送数据。 当接收到发送数据时，消息接收装置在发送数据中向接收侧用户通知该消息。 消息发送装置设定在发送数据中是否重新通知接收方用户的消息，并设置用于重新通知消息的再通知条件。 当接收到需要重新通知的设置的传输数据时，消息接收装置将消息与消息的重新通知条件相关联地存储在传输数据中，确定是否满足重新通知条件， 并且通知接收方用户该确定该再通知条件被满足的消息。