%0 Journal Article
%T 血液管理RFID多标签识别碰撞避免方法<br>Multi-tag identification and collision avoidance with RFIDs in blood management
%A 田川
%A 叶晓俊
%A 王祖良
%A 李鑫
%J 清华大学学报（自然科学版）
%D 2017
%R 10.16511/j.cnki.qhdxxb.2017.21.023
%X EPCglobal_Class1 Gen2协议标准中的动态帧时隙ALOHA标签防碰撞Q算法没有完全消除空时隙，浪费了时序资源，在血液管理这种实时性要求高、标签数量大的情况下是不能接受的。该文提出一种多标签识别碰撞避免方法，将标签识别过程分为两次时隙预分配和标签识别2个阶段，消除了Class1 Gen2协议的空时隙以提高时间利用率。对血液管理应用场景进行了数值仿真分析，结果表明该方法能够显著提高标签识别效率。<br>Abstract：The dynamic frame slotted ALOHA tag anti-collision Q algorithm in the EPCglobal_Class1 Gen2 protocol fails to remove empty slots, which leads to a waste of the slots. This is unacceptable in blood management which requires real-time handling and a large number of tags. A multi-tag identification and collision avoidance method was developed that divides the tag identification into two slot pre-assignments and tag identification. This helps eliminate empty slots in the Class1 Gen2 protocol which improves availability. Simulations of a blood management system indicate that this method significantly improves tag identification efficiency.
%K 射频识别
%K 碰撞避免
%K 动态帧时隙ALOHA
%K &lt
%K br&gt
%K radio frequency identification (RFID)
%K collisions avoidance
%K dynamic frame slotted ALOHA
%U http://jst.tsinghuajournals.com/CN/Y2017/V57/I11/1121