Multi-label anticollision method based on packet dynamic frame and binary tree search for RFID system
A binary tree and dynamic frame technology, applied in the field of anti-collision, can solve the problems of waste of idle time slots, waste of time slots, and many collision time slots, and achieve the effect of reducing the number of collision time slots, simple structure, and low complexity.
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[0031] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
[0032] (1) The process of the reader to identify all tags
[0033] Such as figure 2 As shown, first, the initial value of the number of packets and the initial value of the frame length are set according to the needs of the specific application. Here, the initial value of the number of packets is set to 1, and the initial value of the frame length is 64. According to the above settings, the reader sets the frame length counter value counter=64, the current group number register group=1, and clears the idle time slot register, single tag time slot register and collision time slot register. Then the reader sends a modification command, which contains the group number, frame length and a random number generated by the reader, and sends an I command to start the current frame period, and then waits for the tag to reply.
[0034] In a certain time slot, t...
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