计算机工程 ›› 2011, Vol. 37 ›› Issue (18): 284-286.doi: 10.3969/j.issn.1000-3428.2011.18.095

• 开发研究与设计技术 • 上一篇    下一篇

基于CSMA的无线射频识别防碰撞算法

刘 闯,惠晓威   

  1. (辽宁工程技术大学电子与信息工程学院,辽宁 葫芦岛 125105)
  • 收稿日期:2011-03-28 出版日期:2011-09-20 发布日期:2011-09-20
  • 作者简介:刘 闯(1982-),男,硕士研究生,主研方向:无线射频识别技术,现代通信技术;惠晓威,教授

Radio Frequency Identification Anti-collision Algorithm Based on CSMA

LIU Chuang, HUI Xiao-wei   

  1. (College of Electronics and Information Engineering, Liaoning Technical University, Huludao 125105, China)
  • Received:2011-03-28 Online:2011-09-20 Published:2011-09-20

摘要: 传统无线射频识别防碰撞算法的系统吞吐率普遍不高。为此,提出一种基于载波侦听多路访问(CSMA)的新算法。在标签发送数据前,增加一个保护时间带,并对信道侦听操作进行同步处理,以提高信道侦听的准确性,降低数据发送的盲目性。实验结果表明,与其他算法相比,该算法具有较高的系统吞吐率和较短的数据传输时延。

关键词: 无线射频识别, 防碰撞算法, 载波侦听多路访问, ALOHA协议, 帧时隙ALOHA算法

Abstract: Aiming at the problem that the system throughput rate of traditional Radio Frequency Identification(RFID) anti-collision algorithm is usually very low, a new anti-collision algorithm based on Carrier Sense Multiple Access(CSMA) and RFID is proposed. Before sending data, the algorithm increases a protective period, and synchronizes the detective operation, thus increases the accuracy of the detective operation, and reduces the blindness of channel detection. Experimental results show that compared with other algorithms, this algorithm has higher system throughput rate and shorter data transmission delay.

Key words: Radio Frequency Identification(RFID), anti-collision algorithm, Carrier Sense Multiple Access(CSMA), ALOHA protocol, framed slotted ALOHA algorithm

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