A Fast RFID Tag Anticollision Algorithm for Dynamic Arrival Scenarios Based on First-Come-First-Serve

Algorithm 1

Reader procedure pseudocode of DAS-DFSA.

(1)	L = 128;
(2)	Frame_counts = 0;
(3)	= L(1–0.368);
(4)	if (!IdentificationIsEnd)
(5)	{
(6)	Frame_counts++;
(7)	Set [Ss, Sc, Se] to 0;/ slot counter /
(8)	Broadcast Start instruction;
(9)	Set SIDc to 1;
(10)	Set SIDl to ;
(11)	while (!FrameIsEnd)
(12)	{
(13)	Broadcast IndicateWait/IndicateArrival instruction;
(14)	Identification process and read answers;
(15)	Update identification results Ss/Sc/Se;
(16)	SIDc++;
(17)	if (SIDc ≥ SIDl)
(18)	Set SIDl to SIDc + 1;
(19)	if (SIDc ≥ L)
(20)	Set FrameIsEnd is true;
(21)	}
(22)	if (Frame_counts ≥ 2) begin
(23)	Calculate or use the arrival rate of this frame;
(24)	Calculate the frame length of next frame;
(25)	end
(26)	Set to 2.39Sc;
(27)	if (No tags)
(28)	Set IdentificationIsEnd is true;
(29)	}