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Average Packet Delivery Delay in Intermittently-Connected Networks

Cello, Marco and Gnecco, Giorgio and Marchese, Mario and Sanguineti, Marcello Average Packet Delivery Delay in Intermittently-Connected Networks. In: 44th Conference of Italian Operational Research Society (AIRO 2014), September 2-5, 2014, Como, Italy p. 102. (2014)

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Delay/Disruption-Tolerant Networking (DTN) is addressed. It is a communication paradigm that enables the communication over Intermittently-Connected Networks (ICNs), which are characterized by unpredictable or scheduled contacts among nodes, high latency, and high bit error rates. DTN exploits storeand-forward techniques in order to cope with intermittent link issues. A model is proposed, to compute the average packet delivery delay in ICNs. We assume that the inter-meeting time as well as the contact time between any two nodes is an exponentially-distributed random-variable. As a consequence, the behavior of the communication between each pair of nodes can be modeled by a two-state Continuous-Time Markov Chain (CTMC). It is assumed that the packet generation process at the source node follows a Poisson process, so in the analysis one can exploit the Poisson Arrivals See Time Averages (PASTA) property. Both the IP-like paradigm used by traditional TCP/IP protocols and DTN are considered. Numerical results and simulations are presented.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Intermittently-connected networks; Store-and-forward mechanism; IP networks; Markov chains.
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Research Area: Computer Science and Applications
Depositing User: Caterina Tangheroni
Date Deposited: 26 Feb 2016 15:08
Last Modified: 26 Feb 2016 15:08
URI: http://eprints.imtlucca.it/id/eprint/3134

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