Mobility

Fast Capture-Recapture Approach for Mitigating the Problem of Missing RFID Tags

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Executive Summary

The technology of Radio Frequency IDentification (RFID) enables many applications that rely on passive, battery-less wireless devices. If a RFID reader needs to gather the ID from multiple tags in its range, then it needs to run an anti-collision protocol. Due to errors on the wireless link, a single reader session, which contains one full execution of the anti-collision protocol, may not be sufficient to retrieve the ID of all tags. This problem can be mitigated by running multiple, redundant reader sessions and use the statistical relationship between these sessions. On the other hand, each session is time-consuming and therefore the number of sessions should be kept minimal.

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