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Reducing retransmissions in point-to-point satellite transmissions

Lacan, Jérôme and Pérennou, Tanguy Reducing retransmissions in point-to-point satellite transmissions. (2008) In: 26th AIAA International Communications Satellite Systems - ICSSC, 10-12 Jun 2008, San Diego, United States .

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This paper presents a mechanism that reduces the number of retransmissions needed to ensure reliable unicast transmissions over a shared broadcast channel. This improves the bandwidth occupancy by information packets and potentially reduces the end-to-end jitter and delay. After each block transmission, the mechanism determines the minimal set of information packets to retransmit, builds a specic Reed-Solomon code from this set and then sends repair packets produced with this code instead of retransmitting the information packets. The mechanism was analysed theoretically and evaluated numerically under many dierent conditions (variable packet loss rate, number of receivers, etc.). Both the erasure channel and the error channel were explored. In most cases, the system can be set up such that it uses less retransmissions than a classical ARQ mechanism: most of the time, 40% up to 95% less. Such a mechanism is clearly useful in satellite contexts.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
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Deposited On:25 Nov 2008 13:13

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