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Concurrency Control of RFID Tag Operations for Consistent Tag Memory Accesses  

Ryu, Woo-Seok (부산대학교 컴퓨터공학과)
Hong, Bong-Hee (부산대학교 컴퓨터공학과)
Publication Information
Journal of KIISE:Databases / v.37, no.3, 2010 , pp. 171-175 More about this Journal
Abstract
This paper analyzes the tag data inconsistency problem caused by incomplete execution of the tag access operation to the RFID tag's memory and proposes a protocol to control consistent tag data accesses with finalizing the incomplete operation. Passive RFID tag cannot guarantee complete execution of the tag access operations because of uncertainty and unexpected disconnection of RF communications. This leads to the tag data inconsistency problem. To handle this, we propose a concurrency control protocol which defines incomplete tag operations as continuous queries and monitors the tags're-observation continuously. The protocol finalizes the incomplete operation when the tag is re-observed while it blocks inconsistent data accesses from other operations. We justify the proposed protocol by analyzing the completeness and consistency. The experiments show that the protocol shows better performance than the traditional lock-based concurrency control protocol.
Keywords
RFID Tag Memory; Tag Access Operation; Concurrency Control Protocol; RFID Middleware;
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  • Reference
1 EPCglobal Inc., "Low Level Reader Protocol (LLRP) Version 1.0.1," http://www.epcglobalinc.org/standards/ llrp/llrp_1_0_1-standard-20070813.pdf, 2007.
2 C. Floerkemeier, C. Roduner, M. Lampe, "RFID Application Development with the Accada Middleware Platform," IEEE Systems Journal, Special Issue on RFID, vol.1, no.2, pp.82-89, 2008.
3 S. K. Madria, B Bhargava, "A Transaction Model for Mobile Computing," Int. Database Engineering and Application Symposium, pp.92-102, 1998.
4 A. Rasheed, A. Zaslavsky, "Ensuring Database Availability in Dynamically Changing Mobile Computing Environments," In Proceedings of the 7th Australian Database Conference, Melbourne, Australia, 1996.
5 EPCglobal Inc., "EPCTM Radio-Frequency Identity Protocols Class-1 Generation-2 UHF RFID Protocol for Communications at 860-960 MHz. Version1.1.0," http://www.epcglobalinc.org/standards/ uhfc1g2/uhfc1g2_1_1_0-standard-20071017.pdf, 2007.
6 EPCglobal Inc. "The Application Level Events (ALE) Specification. Version 1.1," http://www.epcglobalinc.org/standards/ale/ale_1_1-standard-cor e-20080227.pdf, 2008.
7 J. Banks, D. Hanny, M. A. Pachano, L. Thompson, "RFID Applied," Wiley, Chichester, March, 2007, pp.328-329.