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Communication system, relay device, and communication method

A relay device and communication device technology, applied in the transmission system, wireless communication, digital transmission system, etc., can solve the problems of increasing the communication device, increasing the communication load, increasing the data volume of the communication device, etc., achieving high security functions, The effect of realizing the safety function

Inactive Publication Date: 2014-03-26
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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PUM

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Abstract

Provided are a communication system, a relay system, and a communication method in which a high security functionality can be obtained in a configuration in which a plurality of communication devices are grouped into a plurality of groups, a relay device is provided to each of the groups, and the relay devices relay data transceiving between the groups. Data transceived by a second relay device (2) to and from a wireless communication device (9) outside the vehicle is dispersed to and stored in a database (11) of a plurality of first relay devices (1). Data received from the wireless communication device (9) is stored in a discrete region (13) in the database (11) of the first relay devices (1). A data storage destination table of the second relay device (2) is encoded. When each of the first relay devices (1) stores data received from an ECU (4) in the database (11), the second relay device (2) is notified, and the second relay device (2) updates the data storage destination table in accordance with the notification.

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 (Local Area 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 the plurality of ECUs perform mutual processing. Data exchange to realize various func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46G06F13/00H04L12/28
CPCG06F13/00H04L2012/40273H04L12/4625H04L12/28H04L12/46H04B7/14H04W4/06H04W88/04
Inventor 田中亮
Owner AUTONETWORKS TECH LTD
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