Anticollision protocol for reading multiple RFID tags

Details Anticollision protocol for reading multiple RFID tags Anticollision protocol for reading multiple RFID tags

1997-02-07

1999-03-16

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

340572, H04Q 522, G08B 1314

Patent

active

058835822

ABSTRACT:
A method of reading multiple RFID tags located in a field of an interrogating antenna is based on periodic transmissions from the tags with large, non-transmission intervals between transmissions. The non-transmission intervals are fixed for a given tag, but are random between tags due to manufacturing tolerances in electrical components from which the tag is constructed, such that no coordination of transmissions from the interrogating antenna is required.

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