Train-ground communication system response method, on-board monitoring terminal and ground communication node

Abstract

The invention provides a train-ground communication system response method, an on-board monitoring terminal and a ground communication node. The method comprises the following steps: launching an exploration signal to the ground in real time; receiving an exploration response signal returned by a ground communication node AP; after the exploration response signal returned by the ground communication node AP is received, converting the current working mode into a signal receiving mode and receiving at least one data packet sent by the AP; sending a reception success response signal to the ground after each data packet is received successfully; and if the at least data packet sent by the AP is not received in a preset period of time, converting the current working mode into a signal emitting mode and continuing launching an exploration signal to the ground. The problem of train-ground data transmission in a train-ground communication system is solved effectively, the timeliness of train-ground communication information is realized, a high-speed train train-ground communication system is enabled to better adapt to high speed, high density and large passenger flow of railway passenger dedicated lines, and the safety of train operation is ensured.

Description

technical field [0001] The invention relates to the technical field of vehicle-ground communication, in particular to a response method of a vehicle-ground communication system, a vehicle-mounted monitoring terminal and a ground communication node. Background technique [0002] With the rapid development of communication technology, especially radio technology, people began to study the high-speed train-ground communication system based on communication technology. The vehicle-ground communication system uses wireless communication to transmit train-ground two-way Wirelessly send status information such as its position and speed to the ground center in real time. The ground center sends information such as obstacles ahead and temporary speed limits to the train through wireless communication. The train calculates the speed curve in real time according to the obstacle information ahead, train parameters, line parameters and other information, and controls the train to run at...

AI Technical Summary

Problems solved by technology

[0005] The information of the existing vehicle-to-ground communication system has problems such as delay and packet loss, which affect driving safety to a certain extent

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