DTN

Part 1: Introduction
In communication field, networks become more popular and routing protocols face multiple challenges. They have first to minimize delay then maximize throughput.

- Internet vs. DTN DTN routing involves message replication. They are therefore useful to operate over long distances as for telecommunications space 1 for which latency reaches sometimes hours or even days On another hand we have Internet which is based on packet forwarding.



Part 2: DTN Architecture and Future Wireless Internet

 * Generalized Architecture


 * Space communications as a customer


 * Bundle transport without permanent end-to-end paths


 * Store-and forward


 * Late name resolution


 * Custody transfer


 * Convergence layer concept


 * Routing with different levels of knowledge of network topology, offered load and connectivity graphs over time



Part 3: Application Areas
- Opportunistic/social networking

- VANETs

- Habitat monitoring

- DTN-based Social Network

- Low cost communication solutions

Part 4: Conclusion
Some of characteristics of Delay Tolerant Networks are:

- No end-to-end path

- Intermittent connectivity

- Long delay

- They are also dynamic