Research Article
End-to-end vs. Hop-by-hop Transport under Intermittent Connectivity
@INPROCEEDINGS{10.4108/ICST.AUTONOMICS2007.2225, author={Simon Heimlicher and Merkouris Karaliopoulos and Hanoch Levy and Martin May}, title={End-to-end vs. Hop-by-hop Transport under Intermittent Connectivity}, proceedings={1st International ICST Conference on Autonomic Computing and Communication Systems}, publisher={ICST}, proceedings_a={AUTONOMICS}, year={2007}, month={10}, keywords={}, doi={10.4108/ICST.AUTONOMICS2007.2225} }- Simon Heimlicher
Merkouris Karaliopoulos
Hanoch Levy
Martin May
Year: 2007
End-to-end vs. Hop-by-hop Transport under Intermittent Connectivity
AUTONOMICS
ICST
DOI: 10.4108/ICST.AUTONOMICS2007.2225
Abstract
This paper revisits the fundamental trade-off between end- to-end and hop-by-hop transport control. The end-to-end principle has been one of the building blocks of the Internet; but in real-world wireless scenarios, end-to-end connectivity is often intermittent, limiting the performance of end-to-end transport protocols. We use a stochastic model that cap- tures both the availability ratio of links and the duration of link disruptions to represent intermittent connectivity. We compare the performance of end-to-end and hop-by-hop transport over an intermittently-connected path. End-to- end, perhaps surprisingly, may perform better than hop-by- hop transport under long disruption periods. We propose the spaced hop-by-hop policy which is found to dominate (in terms of delivery ratio) the end-to-end policy over the whole parameter range and the basic hop-by-hop policy over most of the relevant range.