Through the analysis of IAMS algorithm

this paper proposed a zero idle timeslot anti-collision algorithm which is based on continuous collision bit detection (CCBD).CCBD algorithm introduced continuous collision bit detection mechanism

and divided tag collision into individual bit collision and continuous bits collision to process.CCBD algorithm can obtain the actual existence of the continuous collision bits by using continuous collision bit detection mechanism

thereby avoiding the generation of idle timeslots and unnecessary collision timeslots.The theoretical analysis and experimental simulation show that the CCBD algorithm has overcome the shortage of IAMS algorithm and has a good performance during RFID process.