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.
34 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