Data transmission method, equipment and system

Abstract

The embodiment of the invention provides a data transmission method, equipment and a system, which can be applied to a system related to vehicle driving, such as an automatic driving system or a V2X (vehicle to everything) system, and particularly can be applied to communication equipment in an Ethernet ring network. The method comprises that communication equipment receives a first message through a first ring network interface of the communication equipment, wherein the first message comprises a first field, the value of the first field is a first numerical value or a second numerical value, and the first numerical value is used for indicating that the ring network interface is not allowed to send the message where the first field is located to a service interface, and the second numerical value is used for indicating that the ring network interface is allowed to send the message where the first field is located to the service interface; and then, the communication equipment sends the first message according to the value of the first field. Based on the scheme, the equipment connected with the service interface of the communication equipment can be prevented from repeatedly receiving the multicast message, and the influence on the service is reduced.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a data transmission method, device and system. Background technique [0002] In-vehicle network (In-vehicle Network) refers to the network that carries the data transmission of various devices such as sensors, controllers, and actuators inside the car. The in-vehicle network provides high reliability, low latency, and short-term quick start for data transmission. . With the development of electrification and intelligence of automobiles, traditional control area networks (CAN) can no longer meet the needs of large bandwidth of vehicle sensors. Therefore, the use of Ethernet with large bandwidth and a huge industrial ecosystem As the next-generation in-vehicle network, it has become a mainstream consensus in the industry. [0003] In addition, the ring network topology has the advantages of simplifying the backbone redundant topology, using multiple fault reco...

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Problems solved by technology

[0006] However, the destination device of the multicast message may include multiple devices connected to multiple nodes in the ring network, the node located between the source node and the node implementing folding switching (including the node implementing folding switching), Before, the multicast packet can be received in the default transmission direction, and the multicast packet can be sent to the destination device connected to it; after folding and switching, the multicast packet is transmitted in the direction opposite to the default direction, At this time, the node between the source node and the node implementing folding switching (including the source node and the node implementing folding switching) will receive the multicast message again, and send the multicast message to the node connected to it again. Destination devices, causing some destination devices to repeatedly receive multicast packets, which will have a certain impact on services

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