Data transmission method and related device

Abstract

Embodiments of the invention disclose a data transmission method and a related device. The method comprises the following steps: acquiring to-be-transmitted data for a high-speed magnetic levitation operation control system, carrying out fixed redundant coding on the to-be-transmitted data and generating first coded data corresponding to the to-be-transmitted data so as to achieve redundant codingof the data; then, coding the first coded data by using a feature code corresponding to the first coded data so as to generate second coded data corresponding to the to-be-transmitted data, thereby realizing unique coding of the data and further improving the security coding of the data; and then, calculating the check code of the to-be-transmitted data by utilizing the second coded data, whereinthe check code can be used for checking data in a message by the receiver, thereby ensuring the accuracy of the data in the transmission process. Moreover, the message adopted in the data transmission process carries the uncoded data to be transmitted, so the compressed transmission of the data is realized, and a bandwidth requirement on high-speed magnetic levitation 38G wireless communication is reduced.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a data transmission method and a related device. Background technique [0002] The high-speed maglev train operation control system (referred to as the high-speed maglev operation control system) has the functions of operation control, safety protection, operation dispatching management and other functions for the high-speed maglev train. , The on-board control system located in the train and the communication system distributed along the wireless base station. Among them, a large amount of discrete state information and control instructions need to be transmitted between the partition control system and the vehicle control system. [0003] The 38G radio communication standard is used between the partition control system and the on-board control system, which needs to carry information, voice, video, etc. and other forms of information. [0004] This inform...

AI Technical Summary

Problems solved by technology

Usually, the status or logic bits represented by individual bits of '0' and '1' will form 16-bit, 32-bit, or longer codes after redundant coding according to the security coding rules, resulting in the problem of insufficient wireless communication bandwidth

[0005] The 38G wireless communication also needs to comprehensively carry the data communication between the vehicle and the ground multi-system, and under the constraints of its own narrowband bandwidth, the bandwidth that can be allocated for the communication of the operation and control system is very limited, which undoubtedly restricts the communication between the vehicle and the ground. The amount of information transmission, and limit the security coding redundancy of discrete data, thus affecting the security of information transmission of the operation control system, and the data expansion of the operation control system

Images