An Optimized Schema to Improve the Time Efficiency of the EPG Gen-2 Protocol

RFID systems, especially the UHF RFID systems which work in the frequency range 860-960MHz, are regarded as a bridge to connect the physical world and the cyber space. One main challenge which affects the universal adoption of the RFID systems is the efficient resolution of the tag collision and the rapid identification of tags. In this paper, time efficiency is proposed as an important metric to evaluate the performance of tag collision resolution protocols, and is used to optimize the performance of the commonly used EPC Gen-2 tag collision protocol for the UHF systems. Numeric simulations are performed and it is verified that this optimization will facilitate the tag collision resolution cycle of the protocol.