Title: A Priority Based Transaction mechanism towards high reliable RFID services

Authors: Ching-Hsien Hsu, Shih-Chang Chen, Chia-Hao Yu

Addresses: Department of Computer Science and Information Engineering, Chung Hua University, Hsinchu, Taiwan, ROC. ' Institute of Engineering and Science, Chung Hua University, Hsinchu, Taiwan, ROC. ' Institute of Engineering and Science, Chung Hua University, Hsinchu, Taiwan, ROC

Abstract: With the emergence of RFID technologies, the problem of scheduling reader-tag transmissions in dynamic systems has been arousing attention. This paper presents a priority based approach to coordinate simultaneous communications among multiple readers in order to increase the overall read rate in dynamic RFID systems. Through a contention-free scheduling, the reader-tag transmissions can be performed without collisions even the environment has hidden terminal. To evaluate the effectiveness of the proposed techniques, both network density and mobility of readers| join and leave are conducted in the tests. Experimental results show that the proposed techniques provide superior system throughput in both static and dynamic circumstances.

Keywords: anti-collision; hidden terminals; RFID transactions; priority scheduling; reader collisions; wireless networks; RFID networks; radio frequency identification; coordination; simultaneous communications; multiple readers; read rate; network density; mobility.

DOI: 10.1504/IJAHUC.2009.028660

International Journal of Ad Hoc and Ubiquitous Computing, 2009 Vol.4 No.6, pp.323 - 333

Published online: 22 Sep 2009 *

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