Performance enhancement algorithm for Radio Frequency Identification (RFID) systems
First Claim
1. A method for enhancing the accuracy a Radio Frequency IDentification (RFID) system exhibiting a propensity for inconsistent RFID tag reporting, the RFID system having at least one interrogating antenna for transmitting RF energy within a read field during an interrogation cycle, and an RFID tag within the read field communicating with the antenna;
- the method comprising the steps of;
establishing a timeout setting indicative of the time that each interrogating antenna transmits RF energy within a respective read field;
determining when an RFID tag exhibits inconsistent reporting behavior within a read field; and
increasing the timeout setting of the respective interrogating antenna when the inconsistent reporting behavior is exhibited.
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Accused Products
Abstract
A method for enhancing the accuracy a Radio Frequency IDentification (RFID) system which may exhibit inconsistent RFID tag reporting behavior. The method includes the steps of (i) establishing a timeout setting indicative of the time that each interrogating antenna transmits RF energy within a respective read field, (ii) evaluating/comparing reporting results over multiple interrogation cycles to determine when an RFID tag exhibits inconsistent reporting behavior within the read field and (iii) increasing the timeout setting of the respective interrogating antenna to enhance the energy harvested by an RFID tag/device during each interrogation cycle. In lieu of, or in addition to, increasing the timeout setting, the method evaluates the responses received over multiple cycles and accepts such responses as being valid only when the same response is obtain over consecutive/sequential interrogation cycles. That is, the system evaluates the results of several cycles before accepting the validity or veracity of the response.
16 Citations
19 Claims
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1. A method for enhancing the accuracy a Radio Frequency IDentification (RFID) system exhibiting a propensity for inconsistent RFID tag reporting, the RFID system having at least one interrogating antenna for transmitting RF energy within a read field during an interrogation cycle, and an RFID tag within the read field communicating with the antenna;
- the method comprising the steps of;
establishing a timeout setting indicative of the time that each interrogating antenna transmits RF energy within a respective read field;
determining when an RFID tag exhibits inconsistent reporting behavior within a read field; and
increasing the timeout setting of the respective interrogating antenna when the inconsistent reporting behavior is exhibited. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- the method comprising the steps of;
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16. A method for evaluating the veracity of an Radio Frequency IDentification (RFID) system which has or may exhibit inconsistent RFID tag reporting behavior, the RFID system having at least one interrogating antenna for transmitting RF energy within a read field during an interrogation cycle, and an RFID tag within the read field for communicating with the antenna;
- the method comprising the steps of;
evaluating responses of the RFID tags over several interrogation cycles, and accepting a response from an RFID tag as being valid when several consecutive interrogation cycles yield identical results. - View Dependent Claims (17, 18, 19)
- the method comprising the steps of;
Specification