Title :
TFDMA: A scheme to the RFID reader collision problem based on graph coloration
Author :
Dan, Liu ; Wei, Peng ; Wang, Junyu ; Tan, Jie
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai
Abstract :
The reader collision problem occurs when multiple-RFID reader access tags concurrently. The system efficiency and system throughput will decrease greatly in multiple-reader environment. Most proposals in previous study use a single technique to solve the reader collision problem, thus their system throughput is not desirable. A scheme combining time division and frequency division, TFDMA, is proposed in this paper, which can solve both tag interference and frequency interference by means of graph coloration. According to the simulation and test results, the proposed scheme has better system throughput and system efficiency compared to the existing works.
Keywords :
frequency division multiple access; graph colouring; radiofrequency identification; radiofrequency interference; time division multiple access; TFDMA; frequency interference; graph coloration; multiple-RFID reader access tag; reader collision problem; system efficiency; system throughput; tag interference; time division and frequency division; Collision avoidance; Frequency conversion; Frequency division multiaccess; Multiaccess communication; Proposals; Radiofrequency identification; Radiofrequency interference; Testing; Throughput; Time division multiple access; RFID; collision; frequency interference; graph coloration; tag interference;
Conference_Titel :
Service Operations and Logistics, and Informatics, 2008. IEEE/SOLI 2008. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2012-4
Electronic_ISBN :
978-1-4244-2013-1
DOI :
10.1109/SOLI.2008.4686447
