Method and system for networking radio tags in a radio frequency identification system
First Claim
Patent Images
1. A radio frequency tag for a radio frequency identification system, comprising:
- an antenna system;
a receiver coupled to the antenna system to receive and demodulate a message on at least one frequency; and
a retransmit controller operable to receive the message, determine a retransmit status for the message, and initiate retransmission of the message for reception by another radio frequency tag in response to a positive retransmit status for the message.
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Abstract
A radio frequency tag for a radio frequency identification system is provided that includes an antenna and a receiver coupled to the antenna. The receiver receives and demodulates a message received on at least one frequency. A retransmit controller receives the message, determines a retransmit status for the message, and if the retransmit status is positive, initiates retransmission of the message for reception by another radio tag.
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Citations
31 Claims
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1. A radio frequency tag for a radio frequency identification system, comprising:
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an antenna system;
a receiver coupled to the antenna system to receive and demodulate a message on at least one frequency; and
a retransmit controller operable to receive the message, determine a retransmit status for the message, and initiate retransmission of the message for reception by another radio frequency tag in response to a positive retransmit status for the message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A radio frequency identification system, comprising:
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a base station operable to communicate messages with radio frequency tags within the operational range of the base station;
a plurality of radio frequency tags each comprising;
an antenna system;
a receiver coupled to the antenna to receive and demodulate messages from the base station and the other radio frequency tags on at least one frequency; and
a retransmit controller operable to receive the messages, determine a retransmit status for each message, and initiate retransmission of the message within the operational range of the radio frequency tag in response to a positive retransmit status for the message. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for communication between a base station and a plurality of radio frequency tags in a radio frequency identification system, comprising:
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transmitting a query message from the base station;
each of the radio frequency tags receiving the query message, determining a retransmit status for the query message, and retransmitting the query message in response to a positive retransmit status;
each radio frequency tag receiving the query message, determining a response status for the query message, and transmitting a response message for the base station in response to a positive response status; and
each radio frequency tag receiving a response message from another radio tag, determining a retransmit status for the response message, and retransmitting the response message in response to a positive retransmit status. - View Dependent Claims (21, 22, 23)
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24. A method for processing a message in a network radio frequency tag, comprising:
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receiving a message;
determining a response status for the message;
transmitting a response to the message in response to a positive response status;
determining a retransmit status for the message; and
retransmitting the message in response to a positive retransmit status. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification