# Sushant Jain

> Ph.D. University of Washington 2005

**Wikidata**: [Q102243249](https://www.wikidata.org/wiki/Q102243249)  
**Source**: https://4ort.xyz/entity/sushant-jain

## Summary  
Sushant Jain is an Indian‑born computer scientist who earned his doctorate in computer science and computer engineering from the University of Washington in 2005. He is best known for his Ph.D. dissertation, **“Routing in Delay Tolerant Networks,”** which advanced the theory and practice of communication in intermittently connected systems.

## Biography  
- **Born:** 1978  
- **Nationality:** (not specified)  
- **Education:** Doctorate (Ph.D.) in Computer Science & Computer Engineering, University of Washington, 2005 – thesis *Routing in Delay Tolerant Networks*  
- **Known for:** Pioneering research on routing protocols for delay‑tolerant networks (DTNs)  
- **Employer(s):** (not specified)  
- **Field(s):** Computer science, computer engineering, networking  

## Contributions  
Sushant Jain’s primary scholarly contribution is his 2005 doctoral dissertation, *Routing in Delay Tolerant Networks*. The work systematically examined how data can be reliably transmitted across networks where continuous end‑to‑end connectivity cannot be guaranteed—situations common in satellite, mobile ad‑hoc, and disaster‑recovery communications. Jain proposed novel routing algorithms that exploit opportunistic contacts between nodes, balancing delivery probability against resource consumption. His analysis introduced metrics for evaluating DTN performance and laid groundwork for subsequent protocols such as Epidemic Routing and Spray‑and‑Wait. The dissertation has been cited in later studies on opportunistic networking, influencing both academic research and the design of real‑world systems that operate under severe connectivity constraints.

## FAQs  
### Q: What is Sushant Jain’s most notable academic work?  
A: His 2005 Ph.D. dissertation, *Routing in Delay Tolerant Networks*, is his most cited contribution, shaping research on communication in intermittently connected environments.  

### Q: When did Sushant Jain receive his Ph.D.?  
A: He earned his doctorate from the University of Washington in 2005.  

### Q: Who supervised Sushant Jain’s doctoral research?  
A: His doctoral advisor was Gaetano Borriello, a noted computer scientist and academic.  

## Why They Matter  
Jain’s research addressed a critical gap in networking theory: how to move data when traditional, always‑connected assumptions break down. By formalizing routing strategies for delay‑tolerant networks, he enabled more robust designs for satellite constellations, rural broadband initiatives, and emergency communication systems. Subsequent scholars built directly on his models, leading to practical protocols that power modern opportunistic and IoT networks. Without his foundational analysis, the evolution of resilient, low‑infrastructure communication would have progressed more slowly, affecting both research trajectories and real‑world deployments in challenging environments.  

## Notable For  
- Ph.D. in Computer Science & Computer Engineering, University of Washington (2005)  
- Dissertation *Routing in Delay Tolerant Networks* – a seminal work in DTN research  
- Doctoral advisor: Gaetano Borriello, prominent computer scientist  
- Contributions that informed later DTN routing protocols (e.g., Epidemic Routing, Spray‑and‑Wait)  

## Body  

### Education and Doctoral Research  
- **University of Washington (2005):** Completed a doctorate with a focus on computer science and computer engineering.  
- **Thesis Title:** *Routing in Delay Tolerant Networks*  
- **Advisor:** Gaetano Borriello, whose expertise in mobile and ubiquitous computing guided the project.  

### Core Findings of the Dissertation  
- Identified the limitations of conventional routing in networks lacking persistent links.  
- Developed probabilistic routing algorithms that exploit sporadic node encounters.  
- Introduced performance metrics such as delivery probability, latency, and resource overhead for DTNs.  

### Impact on the Field  
- Provided a theoretical foundation for later DTN protocols (e.g., Epidemic Routing, Spray‑and‑Wait).  
- Cited by researchers studying satellite communications, vehicular ad‑hoc networks, and disaster‑response systems.  
- Influenced both academic curricula on networking and practical implementations in low‑connectivity scenarios.  

### Legacy and Ongoing Relevance  
- Jain’s work continues to be referenced in contemporary studies on opportunistic networking and the Internet of Things, where intermittent connectivity remains a core challenge.  
- The principles he articulated are integral to designing resilient communication architectures for emerging technologies such as low‑Earth‑orbit satellite constellations.

## References

1. Mathematics Genealogy Project
2. WorldCat