基于ALOHA的分组动态帧时隙RFID系统防碰撞算法
Grouping dynamic framed slotted RFID anti-collision algorithm based on the ALOHA
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摘要: 针对动态帧时隙ALOHA算法在标签数目增大时,时延太大和硬件要求太高的问题,提出了分组动态帧时隙ALOHA算法--GDFSA.该算法通过估算电子标签的数量,根据最佳帧长度对标签进行分组,然后再对标签进行分组识别.实验结果表明,该算法能够有效解决无线射频识别系统电子标签识别时的碰撞问题,提高系统自动识别的效率.Abstract: Aiming at the problem that dynamic frame slotted ALOHA algorithm (DFSA) delay is too big and its hardware requirement is too high when tag number increases.The grouping dynamic framed slotted ALOHA algorithm (GDFSA) was proposed.The algorithm determined the number of the tags'group and identified the tags by grouping through the tags quantity estimation method and according to the optimum frame length.The test results showed that GDFSA algorithm which could effectively solve the problem of the tag collision in radio frequency identification (RFID) system and improved the identification efficiency and channel availability.
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