Design of anti-collision integrated security mechanism based on chaotic sequence in UHF RFID system

Collision and security issues are considered as barriers to RFID applications. In this paper, a parallelizable anti-collision based on chaotic sequence combined dynamic frame slotted aloha to build a high-effciency RFID system is proposed. In the tags parallelizable identification, we design a Discrete Markov process to analyze the success identification rate. Then a mutual authentication security protocol merging chaotic anti-collision is presented. The theoretical analysis and simulation results show that the proposed identifcation scheme has less than 45.1 % of the identifcation time slots compared with the OVSF-system when the length of the chaos sequence is 31. The success identification rate of the proposed chaotic anti-collision can achieve 63% when the number of the tag is 100. We test the energy consumption of the presented authentication protocol, which can simultaneously solve the anti-collision and security of the UHF RFID system.