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Transport Layer Issues in Delay Tolerant Mobile Networks

Summary: Transport Layer Issues in
Delay Tolerant Mobile Networks
Khaled A. Harras and Kevin C. Almeroth
Department of Computer Science
University of California, Santa Barbara
Santa Barbara, CA 93106-5110
{kharras, almeroth}@cs.ucsb.edu
Abstract. The tremendous increase in wireless devices and user mobil-
ity have ultimately resulted in a new set of networking challenges that
previously did not exist. Some of these challenges include large delays,
intermittent connectivity and most importantly, the absence of an end-
to-end path from sources to destinations. Networks characterized by one
or more of these challenges are called Delay Tolerant Networks (DTNs).
Researchers have studied DTNs with a major focus on routing issues
in such extreme environments. As a result, in this paper, we shift this
focus towards addressing and studying transport layer issues in extreme
networking environments. We particularly concentrate on investigating
and comparing several reliability approaches in a specific category of
DTNs known as Delay Tolerant Mobile Networks (DTMNs). We present
four different reliability approaches in DTMNs. We also evaluate these


Source: Almeroth, Kevin C. - Department of Computer Science, University of California at Santa Barbara


Collections: Computer Technologies and Information Sciences