Anticollision Protocols for Single-Reader RFID Systems: Temporal Analysis and Optimization

作者：La Porta Thomas F^*; Maselli Gaia; Petrioli Chiara

来源：IEEE Transactions on Mobile Computing, 2011, 10(2): 267-279.

DOI：10.1109/TMC.2010.58

• RFID
• passive tags
• single reader
• anticollision
• MAC protocols

One of the major challenges in the use of Radio Frequency-based Identification (RFID) on a large scale is the ability to read a large number of tags quickly. Central to solving this problem is resolving collisions that occur when multiple tags reply to the query of a reader. To this purpose, several MAC protocols for passive RFID systems have been proposed. These typically build on traditional MAC schemes, such as aloha and tree-based protocols. In this paper, we propose a new performance metric by which to judge these anticollision protocols: time system efficiency. This metric provides a direct measure of the time taken to read a group of tags. We then evaluate a set of well-known RFID MAC protocols in light of this metric. Based on the insights gained, we propose a new anticollision protocol, and show that it significantly outperforms previously proposed mechanisms.

• 出版日期2011-2