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Adaptive Scheduling Mechanisms toward Intelligent Services in Mobile and Wireless RFID Environments

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3 Author(s)
Ching-Hsien Hsu ; Chung Hua Univ., Hsinchu ; Jong Hyuk Park ; Chia-Hao Yu

With the emergence of wireless RFID technologies, the problem, of scheduling transmissions in dynamic RFID systems has been arousing attention. In this paper, we present a method of Two Phase Dynamic Modulation (TPDM), which consists of regional scheduling and hidden terminal scheduling phases, aims to efficiently perform communications between readers and tags in high density and mobile RFID networks. TPDM is a simple mechanism for coordinating simultaneous transmissions among multiple readers and hidden terminals. A significant improvement of this approach is that TPDM can prevent reader collisions by using a distributed self scheduling scheme. The second advantage of the proposed technique is that TPDM is adaptive in both static and dynamic RFID environments. Experimental results show that the TPDM scheduling techniques provide superior and stable performance in both static and dynamic circumstance, especially in mobile and dense environment. The TPDM is shown to be effective in terms of throughput, system efficiency and easy to implement.

Published in:

Advanced Information Networking and Applications - Workshops, 2008. AINAW 2008. 22nd International Conference on

Date of Conference:

25-28 March 2008