Celandroni N.; Ferro E.; Potortì F.
CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy
The optimization of the end-to-end throughput of a TCP connection over geostationary satellite links is a challenging research topic because the high delay-bandwidth product, together with a non-negligible random loss of packets, are conditions which differ considerably from the original environment for which TCP was originally designed. As a result, TCP performance is significantly impaired by the channel bit error rate. In this paper we investigate the application of different FEC (forward error correction) types/rates and different bit rates, for the optimization of TCP goodput, in transmissions over a rain-faded geostationary satellite channel, provided that the end-to-end protocols are left unaltered. We compare physical-level FEC techniques, such as convolutional encoding/Viterbi decoding and Reed Solomon, link-level erasure codes and their combinations, over a wide field of signal-to-noise conditions of the satellite channel. The case of multiple connections per link is also analyzed, in addition to that of a single connection per link. In order to evaluate the throughput of a TCP long-lived connection we used a method that is midway between analysis (fluid model) and simulation.
Long-lived TCP connections, FEC, Satellite channel, Rain fading
Potorti Francesco, Celandroni Nedo, Ferro Erina
ISTI – Istituto di scienza e tecnologie dell'informazione "Alessandro Faedo"
ID: 160136
Year: 2003
Type: Rapporto tecnico
Creation: 2009-06-16 00:00:00.000
Last update: 2020-12-03 09:53:32.000
CNR authors
External IDs
CNR OAI-PMH: oai:it.cnr:prodotti:160136