| 改进的RFID动态帧时隙ALOHA算法 |
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| 引用本文： | 程文青,赵梦欣,徐晶.改进的RFID动态帧时隙ALOHA算法[J].华中科技大学学报(自然科学版),2007,35(6):14-16. |
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| 作者姓名： | 程文青 赵梦欣 徐晶 |
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| 作者单位： | 华中科技大学,电子与信息工程系,湖北,武汉,430074 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 在对现有ALOHA算法分析的基础上提出一种改进的动态帧时隙ALOHA算法.算法根据实时估计的读写器附近的标签数量动态调整帧长,使系统工作在最大吞吐量下,从而缩短标签读取时间.仿真结果表明,该算法在标签数量大于500时,相比其他ALOHA算法在吞吐量上有近100 %的提高,同时读取时间下降近50 %,从而适用在实时性强的射频识别场合.
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| 关 键 词： | 射频识别 ALOHA算法 防冲突 吞吐量 改进 RFID 动态调整 ALOHA 算法分析 systems algorithm slotted frame 射频识别 实时性 最大吞吐量 仿真结果 读取时间 系统工作 帧长 标签 读写器 实时估计 |
| 文章编号： | 1671-4512（2007）06-0014-03 |
| 修稿时间： | 2006-03-17 |
Enhanced dynamic frame slotted ALOHA algorithm for anti-collision in RFID systems |
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| Cheng Wenqing,Zhao Mengxin,Xu Jing.Enhanced dynamic frame slotted ALOHA algorithm for anti-collision in RFID systems[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(6):14-16. |
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| Authors: | Cheng Wenqing Zhao Mengxin Xu Jing |
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| Institution: | Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | ALOHA algorithm is an anti-collision algorithm widely used in RFID system.An enhanced dynamic frame slotted ALOHA algorithm was proposed,after the existing ALOHA algorithms and was analysed,which can dynamically changes the frame length through estimating real-time tag quantity near the readers and keeps working around the maximum throughput to decrease tag identification time.The simulation indicated that compared to other ALOHA algorithms,when the tag quantity exceeds 500,this algorithm has nearly 100 % boost in throughput and 50 % drop in the time of tag identification,and therefore is applicable for RFID cases that require strong real-time process. |
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| Keywords: | radio frequency identification(RFID) ALOHA algorithm anti-collision throughput |
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