RFID tag receive signal strength indicator
First Claim
Patent Images
1. A method for monitoring a radio frequency identification (RFID) reader communication signal in a RFID tag, comprising:
- (a) receiving at the tag a command to measure a signal strength of a reader communication signal;
(b) measuring a strength of a received radio frequency communication signal; and
(c) transmitting an indication of the strength of the radio frequency communication signal.
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Abstract
Methods, systems, and apparatuses for detecting a reader signal strength in a radio frequency identification (RFID) tag is described. A tag is configured to monitor an attribute of a reader transmitted signal, such as the signal strength. The tag generates an indication of the signal attribute, and transmits the indication of the signal attribute to the reader.
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Citations
24 Claims
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1. A method for monitoring a radio frequency identification (RFID) reader communication signal in a RFID tag, comprising:
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(a) receiving at the tag a command to measure a signal strength of a reader communication signal;
(b) measuring a strength of a received radio frequency communication signal; and
(c) transmitting an indication of the strength of the radio frequency communication signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for monitoring a radio frequency identification (RFID) reader communication signal in a RFID tag, comprising:
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means for receiving at the tag a command to measure a signal strength of a reader communication signal;
means for measuring a strength of a received radio frequency communication signal; and
means for transmitting an indication of the strength of the radio frequency communication signal.
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11. A radio frequency identification (RFID) tag, comprising:
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an antenna; and
a signal strength monitor module configured to measure a strength of a radio frequency communication signal received by the antenna;
wherein the signal strength monitor module is further configured to generate an indication of the measured strength of the radio frequency communication signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method in a radio frequency identification (RFID) reader for monitoring transmitted signal strength, comprising:
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(a) transmitting to a tag a command to measure a signal strength of a reader communication signal;
(b) transmitting the reader communication signal; and
(c) receiving from the tag an indication of the strength of the transmitted radio frequency communication signal. - View Dependent Claims (23)
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24. A system in a radio frequency identification (RFID) reader communication for monitoring transmitted signal strength, comprising:
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means for transmitting to a tag a command to measure a signal strength of a reader communication signal; and
means for receiving from the tag an indication of the strength of a transmitted radio frequency communication signal.
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Specification