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Improved Dynamic SIots CoIIision Tracking Tree for RFID Anti-CoIIision AIgorithm
Author(s): 
Pages: 1465-1470
Year: Issue:  8
Journal: Acta Electronica Sinica

Keyword:  RFID(radio frequency identification)anti-collisioncollision tracking treeidle slotbits change method;
Abstract: The identification efficiency of a RFID system decreases when a reader attempts to identify a large number of tags,because a collision occurs.Dynamic slots collision tracking tree algorithm (DSCTTA)reduces the prefix and iteration overhead by using time-divided responding scheme,meanwhile a lot of idle time slots are generated.In this paper,an improved dynamic slots collision tracking tree anti-collision algorithm (IDSCTTA)is proposed to prevent the tag collision by combining DSCTTA with bits change method (BCM).IDSCTTA not only has all the advantages of DSCTTA,but also can suppress the generation of idle slots therefore improve the system throughput and reduce the identification delay.Simulation results show that,IDSCTTA can effectively reduce the identification delay and improve the slot efficiency.And the greater the number of tags is,the better the algorithm perfor-mance is.
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