Secured Fault Tolerant Mobile Computing

Author(s):  
Suparna Biswas ◽  
Sarmistha Neogy
Author(s):  
Zhenpeng Xu ◽  
Hairong Chen ◽  
Weini Zeng

For the traditional distributed computing system, the related message logging conditions had specified to keep the state consistence among the distributed process. Since many new characteristics are introduced in the mobile computing system, the new sufficient logging requirement for mobile computing has to be specified, to avoid the possible state inconsistence among the mobile nodes and the static nodes during the rollback recovery. Firstly, the related definitions of the inconsistence among the process state and the nondeterministic event were extended in the paper, independent of the specific log-based fault tolerant scheme. Finally, a novel particular logging consistency condition was derived based on the extended definitions and Piece-Wise Deterministic model for the mobile computing system. By contrast, the proposal is a practical and efficient constraint for mobile computing upon the possible failures.


Author(s):  
Zhenpeng Xu ◽  
Hairong Chen ◽  
Weini Zeng

Many new characteristics are introduced in the mobile computing system, such as mobility, disconnections, finite power source, vulnerable to physical damage, lack of stable storage. Many log-based rollback recovery fault tolerant schemes were proposed according to the characteristics. However, these schemes may still lead to dramatic loss of computing performance in failure-free or inconsistent recovery after the process fault. In this paper, a hybrid log-based fault tolerant scheme is proposed combining the checkpointing mechanism with the message logging mechanism. The checkpoint, the logs and the happened-before relations are logged synchronously into the memory at local mobile hosts temporarily, and asynchronously into the persistent disk storage in the form of the antecedence graph at local mobile support station. The proposal supports the independent and propagated consistent recovery. By contrast, the results show that the proposal incurs a lower failure-free overhead on the premise of the consistent recoverability.


2003 ◽  
Vol 19 (1) ◽  
pp. 37-53 ◽  
Author(s):  
Taesoon Park ◽  
Namyoon Woo ◽  
Heon Y. Yeom

Author(s):  
Meenakshi Sati ◽  
Vivek Vikash ◽  
Vishwanath Bijalwan ◽  
Pinki Kumari ◽  
Manish Raj ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document