Volume 4 Number 7 (Sep. 2009)
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JSW 2009 Vol.4(7): 634-643 ISSN: 1796-217X
doi: 10.4304//jsw.4.7.634-643

Exploring Delay-Aware Transactions in Heterogeneous Mobile Environments

Brahim Ayari, Abdelmajid Khelil, Neeraj Suri

Technische Universit¨at Darmstadt, Dependable, Embedded Systems and Software Group, Hochschulstr. 10, 64289 Darmstadt, Germany

Abstract—In the expanding e-society, mobile embedded systems are increasingly used to support transactions such as for banking or database applications. Such systems entail a range of heterogeneous entities - both the devices and the networks connecting them. While these systems are exposed to frequent and varied perturbations, the support of atomic distributed transactions is still a fundamental requirement to achieve consistent decisions. Guaranteeing atomicity and high performance in traditional fixed wired networks is based on the assumption that node and link failures occur rarely. This assumption is often not supported in current and upcoming mobile environments where the heterogeneity and mobility often result in link and node failures as a dominant operational scenario. In order to continue guaranteeing strict atomicity while providing for high efficiency (low resource blocking time of transaction participants and message overhead) and acceptable commit rate, transactional fault-tolerance techniques need to be revisited perhaps at the cost of transaction execution time. In this paper, we provide a comprehensive classification of perturbations for a wide range of mobile environments including infrastructure-based, ad-hoc, and hybrid environments. We also investigate the impact of these perturbations on the design of mobile transactions. In particular we argue for the delay-awareness of mobile transactions to allow for the fault-tolerance mechanisms to ensure resilience to the various and frequent perturbations.

Index Terms—Transactions, mobile database systems, dependability

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Cite: Brahim Ayari, Abdelmajid Khelil, Neeraj Suri, "Exploring Delay-Aware Transactions in Heterogeneous Mobile Environments," Journal of Software vol. 4, no. 7, pp. 634-643, 2009.

General Information

ISSN: 1796-217X (Online)
Frequency:  Quarterly
Editor-in-Chief: Prof. Antanas Verikas
Executive Editor: Ms. Yoyo Y. Zhou
Abstracting/ Indexing: DBLP, EBSCO, CNKIGoogle Scholar, ProQuest, INSPEC(IET), ULRICH's Periodicals Directory, WorldCat, etc
E-mail: jsw@iap.org
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