A capture-aware anti-collision algorithm for ISO 18000-6C RFID protocol

RFID tag identification is one of challenging issues since the simultaneous transmissions in the shared wireless medium cause collision between the replies. In this paper, a novel anti-collision algorithm to increase the throughput of RFID systems is presented, which considers the capture effect in the context of framed ALOHA protocol. Under the capture model, the probabilistic method for estimating the backlog and the derivation of the capture-aware optimum frame length equation are provided. The numerical results show that the proposed algorithm significantly outperforms other existing schemes.