“Challenged Networks” often violate the TCP design key assumption of continuous path availability from the source to the sink node. These networks are the preferred target of Delay/Disruption Tolerant Networking (DTN), which aims at providing a more robust network architecture. Against disruptions, however, even standard TCP offers a certain level of robustness, through its many retransmission algorithms. The aim of the paper is to present a comparative analysis of the TCP and DTN Bundle protocol retransmission algorithms triggered by channel disruptions. This analysis provides the reader with a comprehensive view of the many mechanisms involved and a first assessment of their impact on some performance metrics. Although DTN put on top of TCP clearly offers higher resilience against long disruptions, TCP itself can provide a certain level of robustness, provided that the many retransmission parameters are properly set. The analysis is completed by some numerical evaluations on a GEO satellite channel obtained by means of a Linux testbed.

C. Caini, P. Cornice, R. Firrincieli, D. Lacamera, M. Livini (2009). Analysis of TCP and DTN Retransmission Algorithms in Presence of Channel Disruptions. s.l : IEEE Computer Society [10.1109/SPACOMM.2009.10].

Analysis of TCP and DTN Retransmission Algorithms in Presence of Channel Disruptions

CAINI, CARLO;FIRRINCIELI, ROSARIO;
2009

Abstract

“Challenged Networks” often violate the TCP design key assumption of continuous path availability from the source to the sink node. These networks are the preferred target of Delay/Disruption Tolerant Networking (DTN), which aims at providing a more robust network architecture. Against disruptions, however, even standard TCP offers a certain level of robustness, through its many retransmission algorithms. The aim of the paper is to present a comparative analysis of the TCP and DTN Bundle protocol retransmission algorithms triggered by channel disruptions. This analysis provides the reader with a comprehensive view of the many mechanisms involved and a first assessment of their impact on some performance metrics. Although DTN put on top of TCP clearly offers higher resilience against long disruptions, TCP itself can provide a certain level of robustness, provided that the many retransmission parameters are properly set. The analysis is completed by some numerical evaluations on a GEO satellite channel obtained by means of a Linux testbed.
2009
Proceedings of the First International Conference on Advances in Satellite and Space Communications, SPACOMM 2009
174
179
C. Caini, P. Cornice, R. Firrincieli, D. Lacamera, M. Livini (2009). Analysis of TCP and DTN Retransmission Algorithms in Presence of Channel Disruptions. s.l : IEEE Computer Society [10.1109/SPACOMM.2009.10].
C. Caini; P. Cornice; R. Firrincieli; D. Lacamera; M. Livini
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/78901
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 5
social impact