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Method for operating an RFID network

  • US 8,542,102 B2
  • Filed: 09/22/2006
  • Issued: 09/24/2013
  • Est. Priority Date: 05/04/2006
  • Status: Active Grant
First Claim
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1. A method of processing an electronic tag within an RFID network having a plurality of RFID read/write stations, in which a reader service signal is modulated on a read/write signal, the method comprising:

  • determining at least one read/write station of the plurality of RFID read/write stations as a master read/write station, at least based on active connections,determining at least one read/write station of the plurality of the RFID read/write stations as an assistant of the master read/write station or a child of the master read/write station;

    wherein the master RFID read/write station has access to structure data associated with a topology of the network of RFID read/write stations and coordination data associated with a coordination plan, and,wherein each of the plurality of RFID read/write stations is configured to directly receive data from RFID tags; and

    sending the structure data and the coordination data to synchronize network operation of two or more of the RFID read/write stations,wherein the synchronization is based on using a number of time slots and a number of frequency channels associated with a service frequency channel or a service time slot,wherein the sending is performed periodically or on demand;

    wherein a sequence on the reader service signal is configured to change the service frequency channel (Reader Service Channel, RSK) of a child read/write station, in response to a the parent read/write station sending the sequence for delivery to the child read/write station;

    wherein the master or assistant is configured to transmit a response message in order to adapt the structure data or the coordination data, when a message is received from the child; and

    wherein the parent ensures that another child does not use a frequency channel/time slot pair within the RST/RSK that is requested by the child.

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