Car-to-car communication system, vehicle communication device

A vehicle-to-vehicle communication and communication device technology, applied in vehicle-to-vehicle communication, communication between vehicles and infrastructure, vehicle wireless communication services, etc., can solve problems such as heat generation and increased current consumption

Pending Publication Date: 2021-02-05
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this hypothetical structure, since vehicle information is sequentially broadcast and transmitted from each of the two communication modules of the wide area communication unit and the narrow area communication unit, heat generation and current consumption increase becomes a problem

Method used

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  • Car-to-car communication system, vehicle communication device
  • Car-to-car communication system, vehicle communication device
  • Car-to-car communication system, vehicle communication device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0030] The first embodiment of the present disclosure will be described using the drawings. figure 1 It is a figure which shows an example of the schematic structure of the inter-vehicle communication system 100 of this disclosure. like figure 1 As shown, the vehicle-to-vehicle communication system 100 includes a plurality of vehicular communication devices 1 and a wireless base station 2 that are mounted and used in each of a plurality of vehicles Ma, Mb, and Mc.

[0031] exist figure 1 In the figure, for the sake of convenience, only three vehicles (Ma, Mb, and Mc) are shown as vehicles equipped with the vehicle communication device 1 (hereinafter also referred to as “mounted vehicles”). However, as a whole system, there may actually be four vehicles. above. Hereinafter, when distinguishing the vehicle communication device 1 mounted in each of the vehicles Ma, Mb, and Mc, it will be described as the vehicle communication device 1a, 1b, and 1c. The vehicle communication d...

Deformed example 1

[0126] In the first embodiment, the radio base station 2 discloses a mode in which only the wide-area periodic transmission process is suspended and the narrow-area periodic transmission process is continued when only the source vehicle exists in the responsible unit 3 (S102: YES). , but the method of controlling the vehicle communication device 1 by the radio base station 2 is not limited to this. The wireless base station 2 may be configured to instruct both the wide-area regular transmission process and the narrow-area regular transmission process to suspend when only the transmission source vehicle exists in the responsible unit 3 . Specifically, the wireless base station 2 may be configured to transmit both the wide-area suspension instruction signal and the narrow-area suspension instruction signal to the transmission source vehicle as S103. The wireless base station 2 may be configured to be able to transmit, as a control signal, a single control signal that functions a...

Deformed example 2

[0130] The vehicle communication devices 1 may be configured to be capable of implementing indirect inter-vehicle communication via the wireless base station 2 (hereinafter, indirect inter-vehicle communication) in addition to inter-vehicle communication based on narrow-area communication and inter-vehicle communication based on wide-area direct communication. . Hereinafter, an example of a configuration corresponding to the technical idea will be described as Modification 2. FIG.

[0131] The vehicular communication device 1 (in particular, the wide area communication control unit F3) of the present modification 2, based on an instruction from the wireless base station 2, as follows: Figure 12 As shown, implement indirect vehicle-to-vehicle communication. Specifically, based on an instruction from the wireless base station 2, a vehicle information packet (hereinafter referred to as a transfer vehicle information packet) to be addressed to the wireless base station 2 is gene...

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PUM

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Abstract

This car-to-car communication system comprises: a plurality of vehicle communication devices; and a wireless base station. The vehicle communication devices comprise: a vehicle information acquisitionunit (F1) which sequentially acquires vehicle information; a wide-area communication unit (11) that can communicate with other devices; a wide-area communication control unit (F3) which is capable ofregular broadcast transmission of vehicle information packets; a short-range communication unit (12) which can perform short-range communication; a short-range communication control unit (F4) which is capable of regular broadcast transmission of vehicle information packets; and a report processing unit (F32) which sequentially transmits a signal indicating position information of the host vehicleto the wireless base station. The wide-area communication unit control unit stops regular wide-area transmission processing on the basis of a command from the wireless base station. The wireless basestation is equipped with: a base station communication unit (21) that receives vehicle status reports; an intra-cell vehicle management unit (G1) that manages vehicle position information; an encounter determination unit (G2) that determines the possibility that the transmission source vehicle will encounter another vehicle; and a device control unit (G3) that instructs the transmission source device to stop regular wide-area transmission processing.

Description

[0001] Cross-references to related applications: This application is based on Japanese Patent Application No. 2018-119985 filed on June 25, 2018, the contents of which are incorporated herein by reference. technical field [0002] The present disclosure relates to an in-vehicle communication system in which a vehicle communication device, which is a communication device used in a vehicle, performs wireless communication with another vehicle communication device under the control of a wireless base station, and a vehicle communication device providing the vehicle communication system. Background technique [0003] It is proposed that each of a plurality of vehicles sequentially broadcasts and transmits communication packets (hereinafter, vehicle information packets) representing vehicle information such as the current position, traveling speed, and traveling direction, and sequentially receives vehicle information packets transmitted from other vehicles. Communication Systems....

Claims

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Application Information

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IPC IPC(8): H04W52/02G08G1/09H04W4/44H04W4/46
CPCH04W4/46H04W52/02G08G1/09H04W4/06H04W4/025H04W88/06H04W76/14H04W84/005H04W4/70H04W84/042H04W88/005
Inventor 柚木崎稳宗
Owner DENSO CORP
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