TY  - EJOU
AU  - Zhang, Xu 
AU  - He, Yi 
AU  - Yi, Haiwen 
AU  - Zhang, Yulu 
AU  - Li, Yuan 
AU  - Ma, Shuai 
AU  - Li, Gui 
AU  - Zhao, Zhiyuan 
AU  - Liu, Yue 
AU  - Liu, Junyang 
AU  - Wen, Guangjun 
AU  - Li, Jian 

TI  - A Novel Anti-Collision Algorithm for Large Scale of UHF RFID Tags Access Systems
T2  - Computers, Materials \& Continua

PY  - 2024
VL  - 80
IS  - 1
SN  - 1546-2226

AB  - When the radio frequency identification (RFID) system inventories multiple tags, the recognition rate will be seriously affected due to collisions. Based on the existing dynamic frame slotted Aloha (DFSA) algorithm, a sub-frame observation and cyclic redundancy check (CRC) grouping combined dynamic framed slotted Aloha (SUBF-CGDFSA) algorithm is proposed. The algorithm combines the precise estimation method of the quantity of large-scale tags, the large-scale tags grouping mechanism based on CRC pseudo-random characteristics, and the Aloha anti-collision optimization mechanism based on sub-frame observation. By grouping tags and sequentially identifying them within subframes, it accurately estimates the number of remaining tags and optimizes frame length accordingly to improve efficiency in large-scale RFID systems. Simulation outcomes demonstrate that this proposed algorithm can effectively break through the system throughput bottleneck of 36.8%, which is up to 30% higher than the existing DFSA standard scheme, and has more significant advantages, which is suitable for application in large-scale RFID tags scenarios.
KW  - Radio frequency identification; anti-collision; tags grouping; dynamic framed slotted Aloha

DO  - 10.32604/cmc.2024.050000