Method and system providing sleep and wake-up modes for railway track circuit unit

A railway system for a train including a wireless transmitter, said railway system comprising:

• a plurality of railway track circuit units, one of said track circuit units being adapted to communicate in a first direction to a first one of said track circuit units and in a different second direction to a different second one of said track circuit units, each of said track circuit units including a power supply having a control input;
• and
• a plurality of wayside units operatively associated with said track circuit units, each of said wayside units including a control circuit, a wireless receiver and a wireless transmitter, said wireless receiver being adapted to receive a plurality of wireless messages from the wireless transmitter of said train, each of said wireless messages including a first identifier of a corresponding one of said track circuit units and a second identifier of a direction of travel of said train, said control circuit being adapted to respond to receipt of one of said wireless messages and set the control input of a corresponding one of said track circuit units, in order to enable the power supply thereof and enter a wake-up mode thereof,
• wherein one of said wayside units is adapted to receive one of said wireless messages corresponding to one of said track circuit units based upon said first identifier and to responsively enable output based upon said second identifier from said one of said track circuit units a signal in the first direction to said first track circuit unit or in the different second direction to said different second track circuit unit.