Access-Pattern Aware Checkpointing Data Storage Scheme for Mobile Computing Environment

The rapid development of communication technology and mobile devices has facilitated the mobile computing applications such as location-based services, and information sharing. Characteristics of the mobile computing system, such as the space limitation, mobility handling, low bandwidth and limited battery life, make mobile computing applications more prone to failures. Checkpoint and rollback recovery technology, as a fault tolerance method for continuing services in mobile computing environment, is researched in this paper. Based on user access patterns, mainly considering the visit time of the mobile host(MH) to the sojourn mobile support stations (MSSs), a checkpointing data storage scheme is proposed. Only if the stay time in the current mobile support station is long enough, the mobile host should do the checkpoint and store the checkpoint data on the sojourn mobile support station. Based on the visited time to the MSS, the scheme manages checkpointing data high efficiently which is more cognitively flexible and adapt to the nomadic and mobile computing environmental conditions.