Delay Tolerant Networking

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Delay Tolerant Networking (DTN) is an approach to computer network architecture that seeks to address the technical issues in mobile or extreme environments that lack continuous network connectivity. In a DTN, asynchronous variable-length messages (called bundles) are routed in a store and forward manner between participating nodes over varied network transport technologies (including both IP and non-IP based transports). This architecture therefore operates as an overlay network, providing a new naming architecture based on URIs and coarse-grained class of service offerings.

Delay-tolerant networking grew out of the Interplanetary Internet research effort, but has been generalised to include terrestrial mobile networks.

[edit] Research Efforts

Various research efforts are currently investigating the issues involved with DTN:

• The The Delay Tolerant Networking Research Group
• The Technology and Infrastructure for Developing Regions project at UC Berkeley
• The KioskNet research project at The University of Waterloo
• The DieselNet research project at The University of Massachusetts, Amherst
• The Interplanetary Internet Special Interest Group
• The SeNDT research project at Trinity College Dublin