The dynamic frame slotted ALOHA tag anti-collision Q algorithm in the EPCglobal_Class1 Gen2 protocol fails to remove empty slots, which leads to a waste of the slots. This is unacceptable in blood management which requires real-time handling and a large number of tags. A multi-tag identification and collision avoidance method was developed that divides the tag identification into two slot pre-assignments and tag identification. This helps eliminate empty slots in the Class1 Gen2 protocol which improves availability. Simulations of a blood management system indicate that this method significantly improves tag identification efficiency.
TIAN Chuan
,
YE Xiaojun
,
WANG Zuliang
,
LI Xin
. Multi-tag identification and collision avoidance with RFIDs in blood management[J]. Journal of Tsinghua University(Science and Technology), 2017
, 57(11)
: 1121
-1126
.
DOI: 10.16511/j.cnki.qhdxxb.2017.21.023
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