Delay telerant network

1. Advanced Computer Networks
Topic: Delay Tolerant Network
Shashikant V. Athawale
Assistant Professor
Department of Computer Engineering,
AISSMS COE ,Pune

2. Agenda
 What is Delay Tolerant Network.
 Key Properties Of Delay Tolerant Network.
 Characteristics Of Delay Tolerant Network.
 Delay Tolerant Network Architecture
 Delay Tolerant Network Applications

3. What is Delay Tolerant
Network
 Delay-tolerant networking (DTN) is an
approach to computer network which address the
technical issues in heterogeneous net work that
may lack network connectivity.
 Delay tolerant Network is set of protocols act
together performing store carry and forward
communication.

4. Contd..
• Communication is possible even if end-to-
end connectivity is never achievable.
• Exploiting node’s mobility.
• Using store-carry-forward fashion.

5. How Delay tolerant Network
Works

6. Contd..

7. Key Properties Of DTNs
 High Latency
 Low Data Rate
 Disconnection
 Long Queuing Delay
 Short Range Contact
 Dynamic Network Topology

8. Characteristics of DTN.
 Characteristics of DTN
◦ No end-to-end path
◦ Intermittent connectivity
◦ Dynamic topology
◦ Long delay
 DTN routing
◦ Flooding-based: redundancy
◦ Forwarding-based: require topology
information

9. Delay Tolerant Network
Architecture

10. Delay Tolerant Network
Applications
 Telemedicine for Developing
Regions
 DTN-based Social Network Service
 Communication in the Presence of
Oppressive Governments
 File Sharing and Bulk Data Transfer
 Share Air Minutes