On ordered weighted averaging aggregation operators in multicriteria decisionmaking
IEEE Transactions on Systems, Man and Cybernetics
Low-Cost Checkpointing and Failure Recovery in Mobile Computing Systems
IEEE Transactions on Parallel and Distributed Systems
Adaptive recovery for mobile environments
Communications of the ACM
Mutable Checkpoints: A New Checkpointing Approach for Mobile Computing Systems
IEEE Transactions on Parallel and Distributed Systems
Checkpointing distributed applications on mobile computers
PDIS '94 Proceedings of the third international conference on on Parallel and distributed information systems
Correction to "Mutable Checkpoints: A New Checkpointing Approach for Mobile Computing Systems"
IEEE Transactions on Parallel and Distributed Systems
Recoverable mobile environment: design and trade-off analysis
FTCS '96 Proceedings of the The Twenty-Sixth Annual International Symposium on Fault-Tolerant Computing (FTCS '96)
Low-Cost Checkpointing with Mutable Checkpoints in Mobile Computing Systems
ICDCS '98 Proceedings of the The 18th International Conference on Distributed Computing Systems
An Asynchronous Recovery Scheme based on Optimistic Message Logging for Mobile Computing Systems
ICDCS '00 Proceedings of the The 20th International Conference on Distributed Computing Systems ( ICDCS 2000)
A Fault-Tolerant Protocol for Location Directory Maintenance in Mobile Networks
FTCS '95 Proceedings of the Twenty-Fifth International Symposium on Fault-Tolerant Computing
Hierarchical MADM with fuzzy integral for evaluating enterprise intranet web sites
Information Sciences—Informatics and Computer Science: An International Journal
Information Sciences—Informatics and Computer Science: An International Journal
Using fuzzy MCDM to select partners of strategic alliances for liner shipping
Information Sciences—Informatics and Computer Science: An International Journal
On the Use of Fuzzy Logic to Enhance Mobile Agents in Distributed E-Commerce
ICPADS '05 Proceedings of the 11th International Conference on Parallel and Distributed Systems - Workshops - Volume 02
A Fuzzy Approach of Decision Making for an Airline
ICTAI '05 Proceedings of the 17th IEEE International Conference on Tools with Artificial Intelligence
The enhancement of the cell-based GIS analyses with fuzzy processing capabilities
Information Sciences: an International Journal
Vertical handover-decision-making algorithm using fuzzy logic for the integrated Radio-and-OW system
IEEE Transactions on Wireless Communications
European third-generation mobile systems
IEEE Communications Magazine
Improving the fault tolerance of GSM networks
IEEE Network: The Magazine of Global Internetworking
Information Sciences: an International Journal
A new performance measure for characterizing fault rings in interconnection networks
Information Sciences: an International Journal
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Mobile computing systems provide users with access to information regardless of their geographical location. In these systems, Mobile Support Stations (MSSs) play the role of providing reliable and uninterrupted communication and computing facilities to mobile hosts. The failure of a MSS can cause interruption of services provided by the mobile system. Two basic schemes for tolerating the failure of MSSs exist in the literature. The first scheme is based on the principle of checkpointing used in distributed systems. The second scheme is based on state information replication of mobile hosts in a number of secondary support stations. Depending on the replication scheme used, the second approach is further classified as a pessimistic or an optimistic technique. In this paper, we propose a hybrid scheme which combines the pessimistic and the optimistic replication schemes. In the proposed scheme, an attempt is made to strike a balance between the long delay caused by the pessimistic and the high memory requirements of the optimistic schemes. In order to find the best ratio between the number of pessimistic to the number of optimistic secondary stations in the proposed scheme, we used fuzzy logic. We also used simulation to compare the performance of the proposed scheme with those of the optimistic and the pessimistic schemes. Simulation results showed that the proposed scheme performs better than either schemes in terms of delay and memory requirements.