Patent ID: 7995592

Claim:
A method of transmitting a message by carrier current modulation over an electrical power distribution network for public lighting lamps having connected thereto a central unit or a zone unit together with a plurality of control/check modules that might be concerned by the message, the method comprising: initially allocating to a module an identifier, and on installing the module in a position in the network, associating said identifier with data relating to a geographical location where the module is installed, so as to make it possible subsequently to identify the geographical location of the module from its identifier, independently of its installed position in the network; and when sending a message over the network to the module and/or to the central unit, recognizing and/or validating the message in the modules that are connected to the network and that are suitable for receiving the message, and systematically and synchronously repeating the message over the network by means of those modules that have recognized and/or validated the messages, this repetition of messages enabling other modules to become able to receive the message, and after recognition and/or validation, of resending the message in turn, such that from each repetition, other modules understand the message and are able to resend the message again, this process repeating until the message has been sent over the entire network and all of the modules have received the message and resent the message at least once.