A communication method and device for a satellite positioning system terminal of a road transport vehicle

Abstract

The embodiment of the invention provides a communication method and device for a road transportation vehicle satellite positioning system terminal. The method comprises the following steps: receiving a JT / T808 message of the road transportation vehicle satellite positioning system terminal; reading a check code from an original byte array of the JT / T808 message, and resolving the message; and directly performing escaping when escape bytes are encountered in a process of reading the check code from the original byte array of the JT / T808 message and resolving the message. The technical scheme has the beneficial effects that after the message is received, direct escaping is performed when the escape bytes are encountered in the process of reading the check code from the original byte array and resolving the message instead of integrally escaping and reducing the original byte array at first, and verifying the check code and resolving the message, so that byte arrays from which escapes are removed are not regenerated, and memory consumption in a message resolving process is lowered.

Description

technical field [0001] The present invention relates to the technical fields of the Internet of Things and the Internet, in particular to a communication method and device for a satellite positioning system terminal of a road transport vehicle. Background technique [0002] With the development of the Internet of Things and Internet technology this year, the commercialization of the Internet of Vehicles has become increasingly mature. The Ministry of Communications of my country has specially formulated the JT / T 808 agreement to promote orderly development. The JT / T 808-2011 communication protocol formulated by the Ministry of Communications is selected for the communication between the vehicle terminal and the monitoring / monitoring platform. Each message is composed of identification bit, message header, message body and check code, such as figure 1 As shown, it is a message structure diagram of the JT / T 808-2011 communication protocol in the prior art. [0003] The identi...

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Problems solved by technology

[0011] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: in the process of escaping and restoration in the prior art, additional memory needs to be occupied when generating the restored data

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