METHOD FOR EXCHANGING MESSAGES IN A NAVIGATION SYSTEM USING VISIBLE LIGHT COMMUNICATIONS

• US 20090157309A1
• Filed: 12/17/2008
• Published: 06/18/2009
• Est. Priority Date: 12/18/2007
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: WON, Eun-Tae, Son, Jae-Seung, Kang, Noh-Gyoung, Ann, Jong-Hoon, Park, Seung-Hoon, Kim, Dae-Seok
• Application Number:
  US12/336,744
• Publication Number:
  US 20090157309A1
• Time in Patent Office: Days
• US Class Current: 701/209
• CPC Class Codes: G01C 21/20 Instruments for performing navigational calculations G01C21/24, G01C21/26 take precedence
• CPC Class Codes: H04B 10/1149 Arrangements for indoor wireless networking of information
• CPC Class Codes: H04B 10/116 Visible light communication

Abstract

Method and device for exchanging messages in a VLC navigation system is provided, in which a map server generates a provision message in the form of visible light signals through all lamps in an area, using a PLC network, where a navigation service is provided, a terminal that wants to implement the navigation service among terminals that have received the provision message transmits a registration request message to the map server, the map server transmits a registration response message for the registration request message to the terminal, the terminal transmits a map request message including information about a destination to the map server, the map server transmits a map response message including information about a path to the destination to the terminal, and the terminal displays map information and the path.

Claims

1. 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 each of a plurality of 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 a path to the destination to the terminal by the map server; and

displaying map information and the path by the terminal.

2. The method of claim 1, further comprising transmitting lamp Identifier (ID) messages to all lamps positioned along a path in which the terminal moves by the map server.

3. The method of claim 2, wherein each of the lamp ID messages includes a terminal ID and a lamp ID.

4. The method of claim 1, wherein the provision message includes a terminal ID, a building ID, a version of data that can be changed during operation of the VLC navigation system, and a destination list.

5. The method of claim 4, wherein the terminal ID is a predetermined broadcasting ID in the provision message.

6. The method of claim 1, wherein the registration request message includes a terminal ID and a building ID.

7. The method of claim 1, wherein the registration response message includes a terminal ID, a building ID, map information.

8. The method of claim 7, wherein the map information is about a map of an area where the terminal is located in the registration response message.

9. The method of claim 1, wherein the map request message includes a terminal ID, a building ID, a version of data that can be changed during operation of the VLC navigation system, and the destination information.

10. The method of claim 1, wherein the map response message includes a terminal ID, a lamp ID, a version of data that can be changed during operation of the VLC navigation system, the map information, and the optimum path information.

11. The method of claim 10, wherein the map information is about an entire map covering a current location of the terminal to the destination in the map response message.

12. 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.

13. The method of claim 12, further comprising transmitting lamp Identifier (ID) messages to all lamps positioned along a path in which the terminal moves by the map server.

14. The method of claim 13, wherein each of the lamp ID messages includes a terminal ID and a lamp ID.

15. The method of claim 13, further comprising transmitting a current location report message every predetermined period to the map server by the terminal.

16. The method of claim 15, wherein the current location report message includes a terminal ID and a lamp ID.

17. The method of claim 12, wherein the provision message includes a terminal ID, a building ID, a version of data that can be changed during operation of the VLC navigation system, and a list of a plurality of sections each having a predetermined size into which an entire area of a building is divided.

18. The method of claim 17, wherein the terminal ID is a predetermined broadcasting ID in the provision message.

19. The method of claim 12, wherein the registration request message includes a terminal ID, a building ID, an ID of a lamp corresponding to a current area of the terminal, and an ID of a current section of the terminal.

20. The method of claim 12, wherein the registration response message includes a terminal ID, a building ID, a version of data that can be changed during operation of the VLC navigation system, information about an entire map of a current section of the terminal, and map information about a current area of the terminal.

21. The method of claim 12, wherein the map request message includes a terminal ID, a building ID, a version of data that can be changed during operation of the VLC navigation system, and the destination information.

22. The method of claim 12, wherein the map response message includes a terminal ID, an ID of a lamp corresponding to a current area of the terminal, the map information, and the optimum path information.

23. The method of claim 22, wherein the map information is about an entire map covering a current location of the terminal to the destination in the map response message.

24. 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.

25. The terminal of claim 24, further comprising:

receiving lamp Identifier (ID) messages to all lamps positioned along the path.

26. The terminal of claim 25, wherein said ID messages are transmitted concurrently.

27. The terminal of claim 25, wherein said ID messages are transmitted sequentially.

28. The terminal of claim 27, wherein said ID messages are transmitted dependent upon a current location of said terminal.

29. The terminal of claim 27, wherein an identification of at least one prior and one intended ID message is transmitted based on a current location of said terminal.