Train control network, method for communication and method for controlling train integrity

A train control network, comprising:

• a rail, a first communication element and a second communication element, which are to communicate with each other;
• wherein the first communication element comprises or is connected to a first HF-injector, adapted for injecting HF-signals into the rail;
• wherein the second communication element comprises or is connected to a second HF-receiver, adapted for receiving HF-signals transmitted via the rail;
• wherein an evaluation unit is mounted on a train and is provided for analyzing the received HF-signals;
• wherein a frequency of the HF-signals is >1 MHz;
• wherein the first HF-injector is mounted on the train at one end and the second HF-receiver is mounted on the train at an opposite end;
• and
• wherein the evaluation unit is configured to evaluate a length of the train by evaluating a runtime of the HF-signal from the first HF-injector to the second HF-receiver using a common time basis.