This paper proposes a variation to the classic implementation of automatic repeat request (ARQ) which is particularly suitable for the long delay channels, as can be found, for example, in the underwater environment. The proposed technique, called selective repeat with a second replica ARQ, (SR)2 ARQ, follows the same rationale as selective repeat ARQ, but, upon NACK reception, schedules two retransmissions, one taking place immediately, and the other put in a special queue to be released after further retransmissions, but before new packet transmissions. We propose an exact analysis of this technique, proving its ability of trading throughput for shorter delivery delay; thus, it is suitable for scenarios where the required data rate is not high, but a timely data delivery is very important, as is the case, for example, for underwater monitoring applications.

Analysis of an Automatic Repeat Request Scheme Addressing Long Delay Channels

BADIA, LEONARDO;CASARI, PAOLO;ZORZI, MICHELE
2009

Abstract

This paper proposes a variation to the classic implementation of automatic repeat request (ARQ) which is particularly suitable for the long delay channels, as can be found, for example, in the underwater environment. The proposed technique, called selective repeat with a second replica ARQ, (SR)2 ARQ, follows the same rationale as selective repeat ARQ, but, upon NACK reception, schedules two retransmissions, one taking place immediately, and the other put in a special queue to be released after further retransmissions, but before new packet transmissions. We propose an exact analysis of this technique, proving its ability of trading throughput for shorter delivery delay; thus, it is suitable for scenarios where the required data rate is not high, but a timely data delivery is very important, as is the case, for example, for underwater monitoring applications.
2009
Proc. of International Conference on Advanced Information Networking and Applications Workshops, 2009
9780769536392
9781424439997
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2374306
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