一种新的具有鲁棒性动态二进制时隙防碰撞算法

在射频识别系统中,由于信道共享的原因,会发生标签碰撞现象,从而导致阅读器的漏读,因此防碰撞算法在射频识别系统的设计中占有极其重要的地位。现有传统的动态二进制时隙防碰撞算法具有对标签要求不高的优点,非常适用于采用被动标签的RFID系统,但实际使用过程中,由于距离等外界因素会出现弱标签现象,现有算法对此不具有鲁棒性。因此,本文提出一种新的具有鲁棒性动态二进制时隙防碰撞算法,该算法在传统的动态二进制时隙防碰撞算法的基础上,增加一个未确定的标签队列,大大提高了系统的鲁棒性。实验显示该算法比传统BSA识别次数减少55%,同时保证了较好的鲁棒性。

A New Robust Dynamically Slotted Anti-Collision Algorithm

An anti-collision algorithm is very important in the RFID systems.The present DBS protocol is good for passive tags.However,in the real world,there is a high probability of the existence of a weak tag due to the long distance.The existing DBS is not robust against this problem.This paper presents a novel robust dynamically slotted anti-collision algorithm based upon DBS.We suggest an uncertain queue to solve this problem based on DBS.The results show that the total number of identifications is reduced by 55% using this method compared to the conventional BSA with a good performance in robustness.