APPARATUS AND METHOD FOR GENERATING LOCATION INFORMATION

• US 20100238048A1
• Filed: 06/10/2008
• Published: 09/23/2010
• Est. Priority Date: 11/15/2007
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Park, Jong-Hyun, Choi, Wan Sik, Kim, Byung Doo, Cho, Seong Yun, Cho, Young-Su
• Application Number:
  US12/741,723
• Publication Number:
  US 20100238048A1
• Time in Patent Office: Days
• US Class Current: 340/825.490
• CPC Class Codes: G01S 13/876 Combination of several spaced transponders or reflectors of known location for determining the position of a receiver G01S13/874 takes precedence
• CPC Class Codes: G01S 13/878 Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector G01S13/874 takes precedence
• CPC Class Codes: G01S 2013/466 by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined

Abstract

An apparatus for generating location information transmits an SUPL INIT message for measuring a location to a target terminal so as to position the target terminal. The target terminal transmits an SUPL POS INIT message including RFID tag information to the apparatus. The apparatus determines a positioning method of the target terminal by using RFID tag information, generates the location of the target terminal according to the determined positioning method, and transmits the location to a service user.

Claims

1. A method for generating location information of a target terminal, the method comprising:

transmitting an SUPL INIT message for measuring location information of the target terminal to the target terminal;

receiving an SUPL POS INIT message having a radio frequency identification (RFID) tag information from the target terminal;

determining a positioning method of the target terminal by using the RFID tag information; and

generating the location of the target terminal according to the positioning method.

2. The method of claim 1, further comprising:

receiving a mobile location protocol standard location immediate request (SLIR) message from the service user and generating the SUPL INIT message; and

transmitting the location of the target terminal to a service user through the mobile location protocol SLIA message.

3. The method of claim 1, further comprising transmitting the SUPL INIT message to the target terminal when the target terminal is not roaming and uses a secure user plane location (SUPL) process.

4. The method of claim 1, wherein the SUPL POS INIT message comprises a location identification parameter having the RFID tag information and a SET capability parameter having a positioning method supported by the target terminal.

5. The method of claim 4, wherein the determination of the positioning method comprises comparing a positioning method included in the SUPL INIT message and a positioning method included in the SET capability and determining the positioning method.

6. The method of claim 1, wherein the RFID tag information comprises a tag identifier for indicating a proper ID of the RFID tag received by the target terminal and a tag location information for indicating the location of the RFID tag.

7. The method of claim 6, wherein the determination of the positioning method comprises determining the positioning method of the target terminal by using the tag identifier when there is one piece of the RFID tag information.

8. The method of claim 6, wherein the RFID tag information further comprises a tag signal strength for indicating signal strength of the RFID tag received by the RFID reader, and

the determination of the positioning method comprises determining the positioning method of the target terminal by using the tag identifier and the tag signal strength when there are a plurality of pieces of the RFID tag information.

9. A method for generating location information of a target terminal, the method comprising:

receiving a service request message for generating location information of the target terminal from a service user;

transmitting a first message to the target terminal;

receiving a second message having radio frequency identification (RFID) tag information from the target terminal; and

determining a positioning method of the target terminal according to the number of the RFID tag information.

10. The method of claim 9, wherein the RFID tag information comprises a tag identifier for indicating a proper ID of the RFID tag received by the target terminal and a tag signal strength for indicating signal strength of the RFID tag.

11. The method of claim 10, wherein the determination of the positioning method comprises determining a cell identification method using the tag identifier as the positioning method of the target terminal when there is one piece of the RFID tag information.

12. The method of claim 10, wherein the determination of the positioning method comprises determining a signal strength method using the tag identifier and the tag signal strength as the positioning method of the target terminal when there are a plurality of pieces of the RFID tag information.

13. An apparatus for generating location information of a target terminal, the apparatus comprising:

a message processor for transmitting an SUPL INIT message to the target terminal, and receiving an SUPL POS INIT message having radio frequency identification (RFID) tag information for performing a location information generating service of the target terminal from the target terminal when receiving a request on the service from a service user; and

a location generator for generating the location of the target terminal by determining the positioning method of the target terminal by using the RFID tag information.

14. The apparatus of claim 13, further comprising a location transmitter for transmitting the location of the generated target terminal to the service user.

15. The apparatus of claim 14, wherein the location generator compares a positioning method included in the SUPL INIT message and a positioning method included in the SUPL POS INIT message, and determines the positioning method of the target terminal.