SYSTEM AND METHOD FOR OPTIMIZING COMMUNICATION BETWEEN AN RFID READER AND AN RFID TAG

• US 20080290995A1
• Filed: 03/26/2008
• Published: 11/27/2008
• Est. Priority Date: 03/30/2007
• Status: Abandoned Application

• Current Assignee: GSI Group Corporation (Novanta Inc.)
• Original Assignee: SkyeTek, Inc. (RFID Holdings, Inc.)
• Inventors: Chakraborty, Sayan, Bruns, Logan
• Application Number:
  US12/056,098
• Publication Number:
  US 20080290995A1
• Time in Patent Office: Days
• US Class Current: 340/10.1
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: G06K 7/10198 setting parameters for the interrogator, e.g. programming parameters and operating modes
• CPC Class Codes: H04Q 2213/13095 PIN / Access code, authentication

Abstract

A method for optimizing communication between an RFID reader and an RFID tag. Initially, an RFID tag is detected, and the tag type is passively determined. An optimization goal is then selected. An optimal parameter set for communicating with the tag, based on the tag type and the optimization goal is then determined. The reader is then reconfigured using the optimal parameter set to communicate with the tag.

Claims

1. A method for optimizing communication between an RFID reader and an RFID tag comprising:

detecting the tag;

passively determining a tag type for the tag;

selecting an optimization goal;

determining an optimal parameter set for communicating with the tag, based on the tag type and the optimization goal; and

reconfiguring the reader using the optimal parameter set to communicate with the tag.

2. The method of claim 1, wherein the optimization goal is selected from the set of goals consisting of tag range, anti-collision effectiveness, noise tolerance, transaction speed, and communication reliability.

3. The method of claim 1, further including adjusting reader operating parameters in accordance with the tag and known tag attributes.

4. The method of claim 1, further including constructing a tag fingerprint using measured attributes determined from passive inspection of the tag.

5. The method of claim 1, further including constructing a tag fingerprint by actively probing the tag.

6. The method of claim 1, further including:

searching a tag identification database for a match between the tag and a profile/rule including reader operating parameters; and

reconfiguring the RFID reader, using a corresponding specific tag profile when a tag matches a specific tag fingerprint in the database, else using a general seed profile rule that matches a corresponding rule in the database.

7. The method of claim 6, wherein the reader operating parameters include specific tag fingerprints and general seed profile rules.

19. The method of claim 1, further including:

determining the tag'"'"'s implementation by passively measuring the tag'"'"'s attributes; and

determining the tag type from the implementation thus determined.

20. The method of claim 1, wherein the tag type is determined from tag characteristics selected from the group consisting of the tag'"'"'s silicon manufacturer, the tag'"'"'s version, and an aspect of the tag'"'"'s inlay.

8. A system for optimizing communication between an RFID reader and an RFID tag comprising:

an RFID reader for communicating with the tag;

RFID reader operating parameters stored in the reader; and

a database in which is stored multiple sets of RFID reader operating profiles;

wherein;

the tag-type of the tag is determined;

an optimization goal is selected;

an optimal parameter set for communicating with the tag is determined based on the tag type and the optimization goal; and

the reader is reconfigured using the optimal parameter set to communicate with the tag.

9. The system of claim 8, wherein the optimization goal is selected from the set of goals consisting of tag range, anti-collision effectiveness, noise tolerance, transaction speed, and communication reliability.

10. The system of claim 8, further including adjusting reader operating parameters in accordance with the tag and known tag attributes.

11. The system of claim 8, further including constructing a tag fingerprint using measured attributes determined from passive inspection of the tag.

12. The system of claim 8, further including constructing a tag fingerprint by actively probing the tag.

13. The system of claim 8, further including:

searching a tag identification database for a match between the tag and a profile/rule including reader operating parameters; and

reconfiguring the RFID reader, using a corresponding specific tag profile when a tag matches a specific tag fingerprint in the database, else using a general seed profile rule that matches a corresponding rule in the database.

14. The system of claim 13, wherein the reader operating parameters include specific tag fingerprints and general seed profile rules.

21. The system of claim 8, further including:

determining the tag'"'"'s implementation by passively measuring the tag'"'"'s attributes; and

determining the tag type from the implementation thus determined.

22. The system of claim 8, wherein the tag type is determined from tag characteristics selected from the group consisting of the tag'"'"'s silicon manufacturer, the tag'"'"'s version, and an aspect of the tag inlay.

15. A method for optimizing communication between an RFID reader and an RFID tag comprising:

detecting the tag;

passively determining a tag type for the tag;

selecting an optimization goal;

determining an optimal parameter set for communicating with the tag, based on the tag type and the optimization goal;

reconfiguring the reader using the optimal parameter set to communicate with the tag;

searching a tag identification database for a match between the tag and a profile/rule indicating reader operating parameters; and

reconfiguring the RFID reader, using a corresponding specific tag profile when a tag matches a specific tag fingerprint in the database, else using a general seed profile rule that matches a corresponding rule in the database.

16. The method of claim 15, wherein the optimization goal is selected from the set of goals consisting of tag range, anti-collision effectiveness, noise tolerance, transaction speed, and communication reliability.

17. The method of claim 15, further including adjusting reader operating parameters in accordance with the tag and known tag attributes.

18. The method of claim 15, further including constructing a tag fingerprint using measured attributes determined from passive inspection of the tag.

23. The method of claim 15, further including:

determining the tag'"'"'s implementation by passively measuring the tag'"'"'s attributes; and

determining the tag type from the implementation thus determined.

24. The method of claim 15, wherein the tag type is determined from tag characteristics selected from the group consisting of the tag'"'"'s silicon manufacturer, the tag'"'"'s version, and an aspect of the tag'"'"'s inlay.