RFID中基于EPC G1G2的DTJ-ALOHA防碰撞算法仿真  

SIMULATION OF DTJ-ALOHA ANTI-COLLISION ALGORITHM BASED ON EPC G1G2 IN RFID

作　　者：杨晓娇[1] 叶润[2] 吴必造 

机构地区：[1]重庆交通大学信息技术中心,重庆400074 [2]电子科技大学 [3]中移物联网有限公司

出　　处：《计算机应用与软件》2017年第6期303-308,共6页Computer Applications and Software

摘　　要：针对EPC G1G2标准中的动态帧时隙防碰撞算法,在标签数量较多时,会导致Q值频繁的更改,从而增加了阅读器的负担等问题,提出一种以碰撞、空闲和成功时隙的差值,作为判断Q值改变门限的DTJ(Devalue Threshold Judgment)-ALOHA算法。通过Matlab仿真与EPC中算法做对比,验证了DTJ-ALOHA算法无论在Q值改变次数、平均吞吐率,还是阅读器的开销上都优于常见改进算法。In the dynamic frame slot ALOHA in the EPC G1G2 standard, when the number of tags is large, the Q value frequently changes, thereby increasing the burden on the reader and other problems. DTJ-ALOHA algorithm is proposed, which takes the difference of the collision, idle and success slots as the threshold to judge the Q value. Compared with the EPC algorithm through Matlab simulation, it is proved that the DTJ-ALOHA algorithm is better than the common improved algorithm in terms of the number of change of Q value, the average throughput, and the cost of the reader.

关 键 词：动态帧时隙 ALOHA算法 吞吐率 防碰撞 射频识别RFID 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论]