Study on the Performance Improvement of Active RFID System

Abstract

The improved DFSA for 2.4GHz multi-tags active RFID is suggested in 2 different ways: 1) simplified tag collection and Ack procedure using query command and 2) modified Schoute's method to control the number of slots in the frame. To evaluate the performance of the improved system we develop the simulation model.Varying the number of tags in the system we track the performance measures such as throughput, recognition time for multi-tags and tag recognition rate during a given time. The suggested method shows the best performance over all measures. Simplification of collection and Ack commands using query commands contributes to reducing tag recognition time. And the modified Schoute's method which controls the frame size using k1 and k2 contributes to throughput improvement and reduces target cognition time by reducing the number of collection rounds.※ 본 연구는 서울과학기술대학교 교내연구비의 지원으로 수행되었습니다.