Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2011-06-28
2011-06-28
Bugg, George A (Department: 2612)
Communications: electrical
Selective
Interrogation response
C340S572100, C340S010500, C370S328000
Reexamination Certificate
active
07969282
ABSTRACT:
Methods, systems and apparatuses for RFID readers forming a reader network are described. In an aspect of the present invention, a plurality of RFID readers are configured to interrogate tags. Furthermore, the readers are configured to communicate with one another. Each of the readers include a ID number which identifies that particular reader within a reader network during communications. Each reader includes a network interface module and an optimization module to receive and process statistical data obtained from other readers in the network. Aspects of the present invention include a ‘primary/secondary’ reader network configuration, as well as a ‘distributed elements’ reader network configuration. A set of operational rules for the environment is indicated, and tag interrogations are optimized according to the rules. Readers may communicate according to a “Listen Before Talk” (LBT) protocol to avoid undesirable interference. Individual readers are capable of dynamically establishing and joining a network, and leaving the network in a self-configured and semi-autonomous or autonomous manner.
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Arneson Michael R.
Bandy William R.
Powell Kevin J.
Bugg George A
Divita Bartholomew J.
Hughes Terri S.
Symbol Technologies Inc.
Thompson Bradley E
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