Communication system, relay device and communication method

A technology of relay devices and communication devices, which is applied in communication systems, relay devices, and communication fields, can solve the problems of increasing communication devices, increasing communication load, and increasing the data volume of communication devices, so as to achieve safety functions and high security The effect of the function

Inactive Publication Date: 2017-10-24
AUTONETWORKS TECH LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to make the system multi-functional and high-performance, make each communication device multi-functional and high-performance, and increase the number of communication devices in the system, increase the amount of data sent and received between communication devices, so there is a problem of increased communication load

Method used

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  • Communication system, relay device and communication method
  • Communication system, relay device and communication method
  • Communication system, relay device and communication method

Examples

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Embodiment Construction

[0044] Hereinafter, the present invention will be specifically described based on drawings showing embodiments of the present invention. figure 1 It is a block diagram showing the configuration of the communication system of the present invention. The communication system of the present embodiment is a system in which a plurality of ECUs (communication devices) 4 mounted on a vehicle (not shown in the figure) perform data transmission and reception and cooperate with each other, and includes a plurality of first relay devices 1 in addition to the ECU 4 and a second relay device 2 to form a network. The plurality of ECUs 4 are divided into several (three, a to c in the illustrated example) groups (communication device groups), and one first relay device 1 is provided in each group. In addition, in figure 1 Among them, for the ECU 4 and the first relay device 1, the parts belonging to group a are marked with symbols such as ECU 4 a and the first relay device 1 a, and the parts...

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Abstract

The present invention provides a communication system, a relay device, and a communication method, wherein a plurality of communication devices are divided into a plurality of groups, a relay device is installed in each group, and the relay device relays data transmission and reception between the groups. , high security functions can be realized. The second relay device (2) distributes and stores data sent and received with a wireless communication device (9) outside the vehicle in a database (11) of a plurality of first relay devices (1). Furthermore, the data received from the wireless communication device (9) outside the vehicle is stored in the independent area (13) of the database (11) of the first relay device (1), and the data of the second relay device (2) is stored in the independent area (13) of the database (11). Storage destination table encryption. Furthermore, each first relay device (1) sends a notification to the second relay device (2) when the data received from the ECU (4) is stored in the database (11), and the second relay device (2) according to the The notification updates the data storage destination table.

Description

technical field [0001] The present invention relates to a communication system that relays data transmission and reception between a plurality of communication devices and relays data transmission and reception between the communication devices and an external device, a relay device used in the communication system, and the relay device. The method of communication carried out. Background technique [0002] Conventionally, a communication system that connects a plurality of communication devices via a communication line and exchanges data between the plurality of communication devices to perform various processes has been used in various fields. For example, in the field of an on-vehicle LAN (LocalArea Network, local area network) mounted in a vehicle, a plurality of ECUs (Electronic Control Units, Electronic Control Units) that perform different processes are mounted in the vehicle, and data is exchanged between the plurality of ECUs. Exchange to achieve a variety of funct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46G06F13/00H04L12/28
CPCH04L12/4625H04L2012/40273H04W4/06H04W88/04H04B7/14
Inventor 田中亮
Owner AUTONETWORKS TECH LTD
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