国标超高频空口协议防碰撞算法建模及仿真研究

The modeling and simulation of GB UHF air interface protocol anti-collision algorithms

超高频国标射频识别(RFID)空口协议使用动态收缩二叉树防碰撞算法(DDS-BT),DDS-BT效率直接决定国标协议在多标签应用场景下的防碰撞效率。模拟仿真超高频国标协议下标签全盘点的情形,寻找不同参量对DDS-BT的影响。统计国标协议在推荐参数下盘点不同标签群使用的指令分布,标签数量与所需盘点命令成线性增加。对比研究不同参数组合情况下DDS-BT算法与推荐参数的效率。DDS-BT参数随使用环境而定,统计结果基于多次重复仿真,样本足够大,统计分析结果可以为超高频系统应用设计者及阅读器防碰撞算法开发者提供参考,同时模型也可以用来检验芯片随机数生成器质量。

Dynamic disperse shrink binary tree （ DDS-BT ） have application in Information technology-Radio fre- quency identification-air interface at 800/900MHz （ GB/T 29768 ） to resolve collision at the waveform level. The quality of DDS-BT definitive the efficiency of GB/T 29768 for accessing in tag population. Model on DDS-BT and calculate different parameter efficiency on DDS-BT. Statistical GB/T 29768 inventory commands distribution in the recommended parameters of different tag population, in which the number of tag and the required inventory commands linearly increase the number of tags. Compare the efficiency of DDS algorithm with recommended parameters underdifferent combinations of parameters. DDS algorithm parameters depended on the use of the environment. The statisti- cal results are based on multiple replicate simulations and large samples. The results of statistical analysis can provide a reference for developers of UHF system application designers and reader anti-collision algorithms, and the model can also be used to verify the quality of chip random number generator.