无线互联科技
無線互聯科技
무선호련과기
WUXIAN HULIAN KEJI
2014年
2期
56-58
,共3页
梁彪%郑勇鑫%王玉莹%秦中元
樑彪%鄭勇鑫%王玉瑩%秦中元
량표%정용흠%왕옥형%진중원
射频识别%标签防碰撞%模运算分组
射頻識彆%標籤防踫撞%模運算分組
사빈식별%표첨방팽당%모운산분조
RFID%Tag anti-collision%Modular arithmetic
为了解决射频识别(RFID)系统中的多标签防碰撞问题,在分析帧时隙ALOHA算法的基础上,提出一种基于模运算标签分类的RFID标签防碰撞识别方法。引入一种检测信息碰撞的时隙选择信息,对标签所选取时隙的碰撞情况进行分析并估计标签数量;然后对标签EPC编码进行逐级的取模运算,将同余的标签归为一组。各个标签经过K次取模运算后,分为2k组,每组只有发生少量碰撞位的标签。再将标签按照分组对应的时隙发送,碰撞标签采用二叉树后退式算法处理。本方法极大的提高了标签的识别效率,适用于射频识别系统中阅读器对于大量电子标签的快速识别。
為瞭解決射頻識彆(RFID)繫統中的多標籤防踫撞問題,在分析幀時隙ALOHA算法的基礎上,提齣一種基于模運算標籤分類的RFID標籤防踫撞識彆方法。引入一種檢測信息踫撞的時隙選擇信息,對標籤所選取時隙的踫撞情況進行分析併估計標籤數量;然後對標籤EPC編碼進行逐級的取模運算,將同餘的標籤歸為一組。各箇標籤經過K次取模運算後,分為2k組,每組隻有髮生少量踫撞位的標籤。再將標籤按照分組對應的時隙髮送,踫撞標籤採用二扠樹後退式算法處理。本方法極大的提高瞭標籤的識彆效率,適用于射頻識彆繫統中閱讀器對于大量電子標籤的快速識彆。
위료해결사빈식별(RFID)계통중적다표첨방팽당문제,재분석정시극ALOHA산법적기출상,제출일충기우모운산표첨분류적RFID표첨방팽당식별방법。인입일충검측신식팽당적시극선택신식,대표첨소선취시극적팽당정황진행분석병고계표첨수량;연후대표첨EPC편마진행축급적취모운산,장동여적표첨귀위일조。각개표첨경과K차취모운산후,분위2k조,매조지유발생소량팽당위적표첨。재장표첨안조분조대응적시극발송,팽당표첨채용이차수후퇴식산법처리。본방법겁대적제고료표첨적식별효솔,괄용우사빈식별계통중열독기대우대량전자표첨적쾌속식별。
In order to solve the problem of multiple tags collision in RFID system,on the basis of ALOHA algorithm, RFID tag anti-collision identification method based on modular arithmetic tag classification was proposed. Bring in a kind of slot selection information used to detect information collision, it analyze the collision caused by slot and estimate the number of tag; Then do the modular arithmetic on the Tag EPC step by step, the tags with the same remainder are classified as a group.After K times modular arithmetic, tags are divided into 2K groups,The tag in each group has little collision bit. Then tags are sent according to the corresponding slot, collision tags can be dealed with binary tree backword algorithm. This method greatly improve the efficiency of the tag identification, it is suitable for readers which has a large number of electronic tags to identify in RFID system.