Peer-to-peer radio frequency communications for management of RFID readers

• US 8,985,436 B2
• Filed: 01/18/2006
• Issued: 03/24/2015
• Est. Priority Date: 01/18/2006
• Status: Active Grant

• Current Assignee: Symbol Technologies, LLC (Zebra Technologies Corporation)
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Lazo, Philip, Soleimani, Mohammad, Ridings, Barry L.
• Primary Examiner(s): Mai, Thien T
• Application Number:
  US11/275,598
• Publication Number:
  US 20070164109A1
• Time in Patent Office: 3,352 Days
• Field of Search: 235/375, 235/492, 705/68, 340/928, 340/572.1, 340/572.7, 455/562.1
• US Class Current: 235/375
• CPC Class Codes: G01R 31/302 Contactless testing G01R31/66 takes precedence

Abstract

Methods, systems, and apparatuses for testing radio frequency identification (RFID) readers are described. A network communications capability of a first reader may be tested. A second reader may be instructed to perform testing of a radio frequency (RF) communications capability of the first reader. The second reader may include a reader test module. The reader test module includes a first logic module configured to test a forward link of the first reader, and a second logic module configured to test a backward link of the first reader.

Claims

1. A method for testing a first radio frequency identification (RFID) reader, comprising:

testing, by a server, a radio frequency (RF) communications functionality of the first RFID reader using a second RFID reader, wherein the RF communications functionality includes transmitting an RF signal from the first RFID reader to test a forward link of the first RFID reader using the second RFID reader and transmitting a second RF signal from the second RFID reader to the first RFID reader to test a backward link of the first RFID reader, and wherein the test of the backward link comprises providing, by the first RFID reader, an indication to the server that the second RF signal was received; and

transmitting an indication from the second RFID reader to the server that the first RFID reader has failed if the RF signal is not received by the second RFID reader;

further comprising if the first RFID reader receives the second RF signal but fails to provide the indication to the server, transmitting stored data by the first RFID reader to the second RFID reader so the second RFID reader can transmit the stored data to the server.

2. The method of claim 1, wherein said testing the forward link comprises:

monitoring at the second RFID reader for a radio frequency (RF) signal transmitted from the RFID first reader.

3. The method of claim 1, further comprising:

testing the backward link of the first RFID reader using the second RFID reader if it is determined that the RF signal is transmitted from the first RFID reader.

4. The method of claim 3, wherein said testing the backward link of the first RFID reader comprises:

transmitting a simulated tag backscatter response signal from the second RFID reader to the first RFID reader.

5. The method of claim 1, wherein said to test a backward link comprises:

transmitting a data string in a simulated tag backscatter response signal, wherein the first RFID reader provides diagnostic information to the server if the first RFID reader receives the data string, wherein the data string is operable to cause the first RFID reader to trigger a diagnostic analysis to provide the diagnostic information to the server.

6. The method of claim 4, further comprising:

determining whether the first RFID reader received the tag backscatter response signal.

7. The method of claim 6, wherein said determining comprises:

receiving an indication at the server from the first RFID reader that the tag backscatter response signal was received.

8. The method of claim 7, wherein the indication includes diagnostic information regarding the first RFID reader.

9. The method of claim 1, further comprising:

receiving an instruction at the second RFID reader from a server over a communications network to perform said testing.