Performance Improvement of STAC Protocol by Grouping the Number of Tags

태그 수 그룹화를 통한 STAC 프로토콜의 성능 개선

  • Received : 2015.01.06
  • Accepted : 2015.02.16
  • Published : 2015.04.30


In RFID system, when multiple tags respond simultaneously, a collision can occur. A method that solves this collision is referred as anti-collision algorithm. In 13.56MHz RFID system of Auto-ID center, STAC protocol is defined as an anti-collision algorithm for multiple tag reading. The PS algorithm divides the tags within the identification range of reader into smaller groups by increasing the transmission power incrementally and identifies them. In this paper, we propose a STAC/PS algorithm that the PS algorithm is applied in the STAC protocol. Through simulations, it is demonstrated that the collision rate for the proposed algorithm is about 50% lower than STAC protocol. Therefore, the STAC/PS algorithm can achieve faster tag identification speed compared with STAC protocol due to the low collision rate.


RFID;Anti-collision algorithm;STAC protocol;PS algorithm


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Supported by : 부산외국어대학교