Abstract
This paper presents an efficient recovery scheme to provide fault-tolerance for the mobile computing systems. The proposed scheme is based on the message logging and the independent checkpointing, and for the efficient management of the recovery information, such as checkpoints and message logs, the movement-based scheme is suggested. The mobile host carrying its recovery information to the nearby mobile support station can recover instantly in case of a failure. However, the support stations visited by the mobile host may have to experience the high failure-free execution cost for transferring the recovery information and accessing the stable storage. On the other hand, the recovery cost can be too high, if the recovery information remains dispersed over a number of mobile support stations. The movement-based scheme considers both of the failure-free execution cost and the failure-recovery cost. Hence, while a mobile host moves within a certain range, the recovery information of the mobile host remains at the support stations where the information was first saved. However, if the mobile host moves out of the range, it transfers the recovery information into the nearby support station. As a result, the scheme can control the transfer cost as well as the recovery cost. The performance of the proposed scheme is evaluated with extensive simulation study.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.