Method for exchanging messages in a navigation system using visible light communications

A method for exchanging messages in a Visible Light Communication (VLC) navigation system, comprising:

• generating a provision message in the form of visible light signals through all lamps in an area where a navigation service is provided by a map server;
• transmitting a registration request message to the map server by a terminal that wants to implement the navigation service among terminals that have received the provision message;
• transmitting a registration response message for the registration request message to the terminal by the map server;
• transmitting a map request message including information about a destination to the map server by the terminal;
• transmitting a map response message including information about an optimum path to the destination to the terminal, separately in a plurality of messages, each message including a predetermined data amount by the map server;
• and
• displaying map information and the optimum path by the terminal.

A mobile terminal including at least a VLC communication system comprising:

• a processor in communication with a memory, the memory including code which when accessed by the processor causes the processor to execute the following:
• transmitting a registration request message to a map server that wants to implement the navigation service;
• receiving a registration response message for the registration request message transmitted by the map server;
• transmitting a map request message including information about a destination to the map server;
• receiving a map response message including map information regarding a path to the destination transmitted by the map server;
• and
• displaying said map information and the path.