Optical relay system and method for setting identification information of remote device in optical relay system

A method for setting identifiers of at least two remote devices in a distributed antenna system, the method comprising:

• transmitting, by a donor device, a registration request message to the at least two remote devices;
• randomly generating, by the at least two remote devices, temporary identifiers for identifying each of the at least two remote devices in the distributed antenna system in response to the registration request message;
• generating, by the at least two remote devices, characteristic information for each of the at least two remote devices in response to the registration request message;
• transmitting, by the at least two remote devices, the temporary identifiers and the characteristic information to the donor device;
• determining, by the donor device, an order of the temporary identifiers based on the characteristic information;
• generating, by the donor device, unique identifiers of the at least two remote devices;
• and
• assigning the unique identifiers to the temporary identifiers to set identification information for each of the at least two remote devices, according to the determined order.