Vehicle communication method and communication device

Abstract

The invention provides a vehicle communication method and a communication device, and relates to the field of vehicle communication. The method comprises the steps: receiving a first message, whereinthe first message comprises a verification field and a unique identifier, and the unique identifier comprises a frame identifier ID and an internet protocol IP address; checking the first message according to the check field of the first message; and storing the checked first message into a cache space corresponding to the frame ID according to the frame ID. The method is applied to vehicles suchas a networked vehicle, an intelligent vehicle, an automatic driving vehicle and the like, and message identification is achieved by setting a unique identifier for the message, so that synchronous sending of the message and discrimination of the message are ensured. The requirement for the precision of the vehicle-mounted equipment is not too strict, alignment time is not needed at all, and therefore the method is suitable for the vehicle-mounted equipment in an existing vehicle. In addition, an independent cache space is set for each frame ID, so that the message is more convenient and faster to store and read.

Description

technical field [0001] The present application relates to the field of vehicle communication, and in particular, relates to a vehicle communication method and a communication device. Background technique [0002] With the continuous development of automobile technology, the communication requirements between in-vehicle devices are getting higher and higher. In order to meet the communication requirements, it is usually necessary to adopt a redundant connection mode for the on-board equipment, and perform redundant backup for the access link. In this redundant connection mode, higher requirements are put forward for the processing methods during the sending and receiving of the message, for example, how to synchronize the message, how to identify the message, and so on. For example, a vehicle-mounted device first sends two frames of messages with the same content to the network for transmission, and these two frames of messages finally arrive at the designated network port o...

AI Technical Summary

Problems solved by technology

[0003] Common industrial protocol (common industrial protocol, CIP) is a communication protocol used in industrial automation, but because this connection-based communication usually needs to establish a communication path, and it is usually a point-to-point communication method, it will occupy a lot of connection resources. And the transmission capacity is also very limited, so it cannot be widely used in the field of vehicles

In order to achieve good communication between vehicle equipment, automotive Ethernet came into being, such as using a common scalable service-oriented protocol stack (scalable service-oriented middleware over internet protocol, SOME / IP) (that is, located above the IP protocol layer A service-oriented scalable middleware), although SOME / IP has better performance than CIP, but the protocol depth of SOME / IP is too deep and has greater independence, especially for the application layer. In addition, the current SOME / IP still cannot meet the requirements of the above redundancy mechanism, that is to say, it cannot meet the requirements of the above redundancy mechanism for message synchronization and screening

[0004] However, if the existing communication mechanism in the communication field is directly applied to the communication in the vehicle field, that is, to realize the real-time transmission of the above-mentioned Ethernet in the vehicle field based on time synchronization, it will be too complicated and cumbersome

Images