1. The document presents a failure recovery scheme for mobile computing systems based on checkpointing and handoff count. It proposes taking checkpoints when the handoff count exceeds a threshold or the distance between mobile support stations exceeds a threshold.
2. Upon failure, recovery information is collected from the mobile support stations where checkpoints are stored. The number of support stations and distance between them affects recovery time and cost.
3. The proposed scheme aims to optimize failure recovery by limiting the number of support stations and distance based on handoff count thresholds. Checkpoints are initiated to minimize scattered recovery information across multiple distant support stations.