期刊
IEEE TRANSACTIONS ON MOBILE COMPUTING
卷 10, 期 2, 页码 267-279出版社
IEEE COMPUTER SOC
DOI: 10.1109/TMC.2010.58
关键词
RFID; passive tags; single reader; anticollision; MAC protocols
资金
- US National Science Foundation [CNS-0916171]
- European ARTEMIS CHIRON
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.
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