[Nets-seminars] Seminar 28th March GS/302 4pm

[Richard G. Clegg]

Don't forget next Friday's seminar.  Ioannis Psaras from Surrey will be 
visiting to talk about DTN.

Title: DTN RoadTax: Roadmap and Taxonomy for DTN Research
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Abstract:
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DTN research is the ultimate hot topic for networking research nowadays. 
Researchers are struggling to identify ways to network places and devices 
that currently do not have the option of "going" online. In contrast to 
conventional Internet communications, where connectivity is ubiquitous, in 
DTNs end-to-end connectivity is the exception rather than the rule. 
Therefore, DTN nodes need to exploit store-carry-and-forward techniques in 
order to deliver messages to their destination.

Originally, DTN research began from the InterPlaNetary (IPN) Internet, but 
later on researchers identified more environments where 
Delay-/Disruption-Tolerant Networking may be applicable. Some examples, are 
VANETs, underwater communications, social networks, providing connectivity 
to developing countries, just to name a few.

Although the "killer app" for DTNs is not yet known, some of the potential 
applications of interest may very well be e-mail, web, telemetry and 
telecomand, road traffic management, health monitoring etc. Clearly, 
architecture and application heterogeneity pose huge difficulties for the 
design of algorithms and protocols for DTN environments. The DTN research 
community, however, has not considered this heterogeneity yet, leading to 
research proposals that may only partly be applicable to DTN environments.

In this talk, we'll try to identify what is still missing in order to make 
DTN research applicable in real terms. In our opinion, the roadmap to 
success is a "taxonomization" of DTN environments/architectures, followed 
by the identification of the corresponding challenges and the definition of 
the appropriate metrics, topologies and evaluation methodologies. We'll 
attempt to provide initial insights on that direction by defining service 
targets and system constraints for the whole spectrum of potential DTN 
deployments. Finally, we'll point out avenues for future research.

-- 
Richard G. Clegg,
Dept of Elec. Eng.,
University College London
http://www.richardclegg.org/