Method and system for networking radio tags in a radio frequency identification system
AssigneeAxcess, Inc. a Delaware corporation
InventorWayne Steeves
Life of this patent
Estimating the term…
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.
Claims31
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.
A radio frequency identification system, comprising:
- 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.
A method for communication between a base station and a plurality of radio frequency tags in a radio frequency identification system, comprising:
- 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.
A method for processing a message in a network radio frequency tag, comprising:
- 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.
Dependencies are inferred from the claim text.