摘要
针对传统超高频射频识别(UHF RFID)系统中出现的多标签碰撞问题,提出一种基于锁位的并行二进制分割(LPBS)防碰撞算法。利用曼彻斯特编码发送锁位指令,确定并提取碰撞位,不再传输非碰撞位信息;利用并行二进制分割技术,使得阅读器和标签可以进行一位标签应答。该算法减少阅读器和标签之间传送的比特数量的同时,减少了碰撞时隙。仿真结果表明,在大多数情况下,该算法在吞吐率、时间延迟等方面优于传统的防碰撞算法。
Aiming at the problem of multi-tag collision in traditional UHF RFID system,this paper proposes a lock-bit-based parallel binary segmentation(LPBS)anti-collision algorithm.It used the Manchester code to send a lock-bit instruction to determine and extract the collision bit,and no longer transmitted the non-collision bit information.Parallel binary segmentation technology was used to enable readers and tags to perform one-bit tag response.It reduced the number of bits transmitted between the reader and the tag while reducing the collision time slot.The simulation results show that in most cases,the proposed scheme is superior to the traditional anti-collision algorithm in terms of throughput rate and time delay.
作者
贺晓霞
贾小林
He Xiaoxia;Jia Xiaolin(College of Computer Science and Technology,Southwest University of Science and Technology,Mianyang 621000,Sichuan,China)
出处
《计算机应用与软件》
北大核心
2020年第4期247-251,共5页
Computer Applications and Software
基金
国家自然科学基金面上项目(61471306)
国家自然科学基金青年项目(61601381)
四川省教育厅资助科研重点项目(18ZA0488)
四川省科技厅支撑计划重大项目(2016GZ0059)。
