ACM CHANTS 2015
P. S. Paul 1, B. C. Ghosh2, K. De3, S. Saha3, S. Nandi1, S. Chakraborty4 1,4Department of CSE , 2Department of IT ,3Department of CA
1,2,3National Institute of Technology, Durgapur, India 4Indian Institute of Technology, Khragpur, India
Demo – pSync: A Peer-to-peer Sync Tool for Challenged Networks
Objective
P2P sync application for seamless file synchronization in DTN mode which is precisely customized for scenarios
of challenged networks.
Test Bed Experiment
Result Analysis
Conclusion and Future Scope • pSync performance surpluses state-of-the art P2P sync tools like BitTorrent
Sync when nodes are mobile.
• Works in progress to increase scalability and robustness.
• Random chunk forwarding and Testing in Different Dynamic Scenario
References
[1] Saha et al, “Designing delay constrained hybrid ad hoc network
infrastructure for post-disaster communication,” Ad Hoc Networks
[Elsevier], vol. 25, part B, 2015, pp. 406 - 429.
[2] https://github.com/ghoshbishakh/psync
Motivation
•Existing P2P syncing protocols
perform poorly under challenged scenarios.
• Network Resource under-utilization due to flooding based
data delivery.
•Less throughput due to huge packet duplication if
conventional P2P syncing used.
Features
• Role-based file syncing with file priority.
• Reduced data loss through device priority
scheduling.
• Uses UDP to handle intermittent connectivity.
• Discovers stable neighbors.
• Intelligent group formation to enhance scalability.
System Overview
UAV Deployment across the Damodor River,
Durgapur, India
Scenario 1 : With Mobile Nodes (c) Distribution of File Syncing Times in Many to One
(e) Distribution of Sync Times for messages at varying
priority level. (g) Packet Delivery: Ground Mule Scenario
(f) Packet Delivery: Aerial Mule Scenario
(b) Final packet load node wise (a) Packet Delivery Probability
Acknowledgement : This Publication is an outcome of the R&D work undertaken in the ITRA project of Media Lab Asia entitled "Post-Disaster Situation Analysis and Resource Management Using Delay-Tolerant Peer-to-
Peer Wireless Networks (DISARM)“ (http://www.nitdgp.ac.in/MCN-RG/mcn-rg.html)
(d) Average Sync Time over Varying Node Density
UAV Deployment across the Damodor River, Durgapur, India