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This paper introduces a new tree-based anti-collision scheme using multiple feedbacks for uplink tag random access in a single-cell scenario. The authors examine MAC efficiency improvements that result from the proposed scheme in terms of Uplink (UL) throughput for emerging Radio Frequency Identification (RFID) networks, and compare it with the conventional tree based RFID MAC in ISO 18000-6 Type B standard. COLLISION resolution is a key component in RFID MAC protocols. Enhanced read throughput of tag IDs on the uplink is achieved via Downlink (DL) feedback from the reader that contains information regarding successes/failures in (Immediate) past read attempts, thereby allowing for quicker collision resolution.
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