Scheduling Method of Real - Time Mobile Transaction Manager considering Value of Transactions and Validity of Real - Time Data 


Vol. 8,  No. 5, pp. 533-542, Oct.  2001
10.3745/KIPSTD.2001.8.5.533


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  Abstract

In this paper, we present a scheduling method for real-time mobile transaction manager in mobile computing environment. The proposed method checks whether a transaction is executable or not. It is able to by considering not only the deadline of real-time transaction but also the validity of real-time data in mobile hosts. And then, it schedules the real-time mobile transactions by making optimal execution window based on the priority queue, while considering the transaction value and deadline. Disconnection with mobile hosts is monitored in selecting the transaction for execution. Using the proposed method reduces the number of restarting times after transaction aborts which is caused by the violation of the validity constraints of real-time data. And it has merits of maximizing the sum of values of real-time mobile transactions which meet the deadline. The performance evaluation demonstrates that the number of committed real-time transactions within the deadline is improved by 20%. This method can be used in real-time mobile transaction manager in such environments as cellular communications, emergency medicine information systems and so on.

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[IEEE Style]

S. K. Cho, G. B. Kim, S. J. Lee, H. Y. Bae, "Scheduling Method of Real - Time Mobile Transaction Manager considering Value of Transactions and Validity of Real - Time Data," The KIPS Transactions:PartD, vol. 8, no. 5, pp. 533-542, 2001. DOI: 10.3745/KIPSTD.2001.8.5.533.

[ACM Style]

Sook Kyoung Cho, Gyoung Bae Kim, Soon Jo Lee, and Hae Young Bae. 2001. Scheduling Method of Real - Time Mobile Transaction Manager considering Value of Transactions and Validity of Real - Time Data. The KIPS Transactions:PartD, 8, 5, (2001), 533-542. DOI: 10.3745/KIPSTD.2001.8.5.533.

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