摘要： 基于ISO/IEC 18000-6C超高频射频识别标准，提出一种时隙不完全竞争防碰撞算法。将动态二叉树搜索技术引入竞争性冲突避免机制，并加入对空闲时隙和碰撞时隙的特殊处理策略。通过NS-2平台建立仿真模型，分析对比动态二叉树搜索算法、ISO/IEC 18000-6C标准算法和SPC算法的性能。仿真结果表明，SPC算法识别时间分别比动态二叉树搜索算法和18000-6C标准算法缩短约30%和20%，识别率比18000-6C算法提高约35%。

关键词: 时隙Aloha, 二叉树搜索, 射频识别, 不完全竞争

Abstract: Based on the ISO/IEC 18000-6C UHF Radio Frequency Identification(RFID) standard, this paper proposes a Slot-based Partial Competitive(SPC) anti-collision algorithm, which introduces dynamic binary tree search technology into the competitive collision avoidance mechanism for the first time. Moreover, the SPC algorithm applies the specific technologies to idle slots and collision slots. The performances of the dynamic binary tree search, ISO/IEC 18000-6C and the SPC algorithm are compared via NS-2 simulation experiments. Simulation results indicate that the SPC algorithm is able to not only reduce the recognition time by 30% and 20% compared with the binary tree search algorithm and the 18000-6C algorithm, respectively, but also improve the recognition rate by 35% compared with 18000-6C algorithm.

Key words: slot Aloha, binary tree search, Radio Frequency Identification(RFID), partial competitive

中图分类号: 

• TP301.6