Autor: | O. Waldhorst, C. Lindemann, A. Klemm | Links: | DownloadBibtex |
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Quelle: | Proc. IEEE Semiannual Vehicular Technology Conference (VTC), pp. 2758-2763, Orlando, Florida, USA, Oktober 2003 | ||
Establishing peer-to-peer (P2P) file sharing for
mobile ad hoc networks (MANET) requires the construction of a
search algorithm for transmitting queries and search results as
well as the development of a transfer protocol for downloading
files matching a query. In this paper, we present a specialpurpose
system for searching and file transfer tailored to both
the characteristics of MANET and the requirements of peer-topeer
file sharing. Our approach is based on an application layer
overlay network. As innovative feature, overlay routes are set up
on demand by the search algorithm, closely matching network
topology and transparently aggregating redundant transfer paths
on a per-file basis. The transfer protocol guarantees low
transmission overhead and a high fraction of successful
downloads by utilizing overlay routes. In a detailed ns-2
simulation study, we show that both the search algorithm and the
transfer protocol outperform off-the-shelf approaches based on a
P2P file sharing system for the wireline Internet, TCP and a
MANET routing protocol.