RFID系统防碰撞协议研究设计与优化
doi: 10.3724/SP.J.1146.2007.01632
Research on Anti-collision Protocols in RFID SystemsDesign and Optimization
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摘要: 碰撞问题是影响射频识别(RFID)系统读取效率的关键问题。该文提出了两种新的防碰撞协议CDCA协议和CDCA-2D协议，并且对两种协议进行了详细的理论分析和优化。新协议将RFID系统的读取过程分为两个阶段，利用第1阶段的碰撞检测信息实现在第2个阶段的无碰撞通信。仿真结果表明，和目前国际上流行的RFID防碰撞算法相比，两种新协议极大地提高了读取的效率。
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关键词:
- 射频识别;防碰撞;碰撞检测
Abstract: Collision issue is a significant one which limits the reading efficiency of RFID systems. This paper presents two new anti-collision protocols - CDCA protocol and CDCA-2D protocol. Detailed theoretical analysis and optimization for the two protocols are provided in this paper. The new protocols split the reading process of RFID systems into two steps. The collision information is obtained in the first step and then applied to make the second reading step completely collision-free. The simulation results denote that the new proposed protocols highly improve the reading efficiency comparing to the current popular anti-collision algorithm. -
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