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Data transmission method and device of vehicle-mounted equipment

A data transmission method and technology for in-vehicle equipment, which are applied in the field of in-vehicle equipment data transmission, can solve problems such as resource exhaustion, redundant vehicle management platform platform, and regular trigger reporting at intervals of 10 minutes, and achieve the effect of reducing data traffic and usage.

Inactive Publication Date: 2019-04-05
XIAN ZHONGXING NEW SOFTWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, in the case of unstable network communication, if the sending of message data packets fails all the time, a large number of message data packets to be retransmitted will accumulate, resulting in a waste of internal resources of the Internet of Vehicles device and possible resource exhaustion
In addition, there may be multiple retransmission message data packets of the same service type. For example, the vehicle status report service needs to be triggered at regular intervals of 10 minutes to report. If the network communication is unstable for 1 hour, it needs to be reported 6 times. For vehicle status service, six retransmission interfaces need to be used at this time, and the vehicle management platform only needs the latest vehicle status provided by the Internet of Vehicles device. Multiple retransmission data packets of the same service type are uploaded repeatedly. For the vehicle management platform platform is redundant

Method used

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  • Data transmission method and device of vehicle-mounted equipment
  • Data transmission method and device of vehicle-mounted equipment
  • Data transmission method and device of vehicle-mounted equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Such as image 3 As shown, the workflow of this embodiment is as follows:

[0112] When service type A is triggered, the retransmission interface of service type A is started, and the message ID, service type and content of the sent data packet are recorded. Before the retransmission interval is reached, if the feedback confirmation returned by the vehicle management platform is received, and the feedback confirmation is received If the message ID and service type within are consistent with the sent data packet, the retransmitted data packet of service type A is cleared, otherwise the data packet of service type A is retransmitted. During this period, it is necessary to check whether the maximum number of retransmissions or the maximum retransmission time is exceeded. If it has exceeded, the retransmitted data packets of service type A are also cleared.

Embodiment 2

[0114] This embodiment provides a mechanism for retransmission between the vehicle networking equipment and the vehicle management platform based on the message ID and based on different service types. This embodiment describes the method for retransmitting the current single data for the service type. ,Such as Figure 4 As shown, the specific process is described as follows:

[0115] Step S101: The car networking equipment triggers service type A;

[0116] Step S102: The car networking device sends a message data packet;

[0117] Step S103: the vehicle networking device starts the retransmission interface of service type A;

[0118] Step S104: Record the message ID, service type, and data packet content of the data packet sent by service type A in the retransmission interface;

[0119] Judgement C101: Judge whether the confirmation data packet returned by the vehicle management platform is received before the retransmission interval of service type A arrives;

[0120] Judge C102: Judge...

Embodiment 3

[0130] This embodiment describes in detail the implementation of the retransmission scheme between the connected car equipment and the vehicle management platform:

[0131] Step S301: The IoV device receives the event trigger notification of the service type A, collects the parameter data corresponding to the service type A, and fills it into the message data packet to be sent. The message data packet should also carry the message ID assigned by the IoV device And service type, go to step S302;

[0132] Step S302: The car networking device calls the uplink interface to start sending message data packets of service type A / service type B / other service types to the vehicle management platform. According to the service type, enter step S303 or step S403;

[0133] Step S303: Start the corresponding retransmission interface according to the service type, here start the service type A interface, read the interval time in the interface, enable the service type A retransmission timer, registe...

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PUM

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Abstract

The invention provides a data transmission method and device of vehicle-mounted equipment, and relates to the technical field of vehicle-mounted data transmission. The method comprises that the service type and message identification ID of a target retransmission message are analyzed; the target transmission message is sent to a corresponding retransmission interface according to the service typeand message identification ID thereof; and when a retransmission time interval is reached, the target retransmission message is sent to a vehicle management platform. The message ID serves as basis ofconfirmation, retransmission is carried out according to the service type, the condition that a lot of uplink instructions and downlink instruction response are abandoned or transmitted repeatedly can be avoided, use of internal resources is reduced, and the data flow of network communication is reduced.

Description

Technical field [0001] The present invention relates to the technical field of vehicle data transmission, in particular to a method and device for data transmission of vehicle equipment. Background technique [0002] At present, Internet of Vehicles devices upload vehicle data to the vehicle management platform through the wireless network, and the vehicle management platform sends control instructions to the vehicle through the network to complete remote control. Application communication protocols are used between car networking equipment and vehicle management platforms, such as: MQTT (Message Queuing Telemetry Transport), HTTP (HyperText Transfer Protocol), COAP (Constrained Application Protocol, Constrained Application Protocol), etc. Protocol for communication. These communication protocols are used to carry and transmit upper-layer service instructions. At present, none of these application communication protocols defines a corresponding process to ensure the reliability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1816H04L1/1825H04L1/188H04L1/189
Inventor 韦杏媛
Owner XIAN ZHONGXING NEW SOFTWARE