Bi-slot tree based tag identification method in RFID systems

Details Bi-slot tree based tag identification method in RFID systems Bi-slot tree based tag identification method in RFID systems

2006-12-20

2009-12-01

Previl, Daniel (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C034S568000, C034S080000, C034S539000

Reexamination Certificate

active

07626503

ABSTRACT:
A bi-slot tree based tag identification method in RFID systems includes (a) transmitting an inquiry of (n−1) bits to each tag at the reader; (b) deciding whether the inquiry of (n−1) bits are identical with first (n−1) bits of each tag ID when receiving the inquiry of (n−1) bits at each tag within a readable range of the reader; (c) transmitting each tag ID by one bit from (n+1)thbit to last bit thereof to the reader through different time slots based on nthbit value of each tag ID at the tags whose first (n−1) bits are identical with the inquiry of (n−1) bits; and (d) at the reader, checking whether there is a collision among the tag IDs received from the tags and identifying each tag ID of the tags based on the check result.

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