Throughput analysis of a cooperative ARQ scheme in the presence of hidden and exposed terminals
Tipus de documentArticle
Data publicació2012
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Cooperative Automatic Retransmission Request
(C-ARQ) schemes exploit the broadcast nature
of the radio channel by allowing those users which
overhear a transmission to act as spontaneous relays
when a packet has been received with errors at destination.
Transmission takes place in two phases. First,
the source transmits to the destination. In the case of
error, retransmissions are then executed by the relays,
providing the system with cooperative diversity. In this paper we analyze how the addition of these relays to the
communication modifies the well-known hidden and
exposed terminal problems associated to any medium
access control protocol based on carrier sensing. This
work is focused on Carrier Sensing Multiple Access
(CSMA) protocols, such as the one defined in the
IEEE 802.11 Standard. The theoretical study presented
in this paper has been supported by computer-based
simulations.
CitacióAlonso-Zarate, J. [et al.]. Throughput analysis of a cooperative ARQ scheme in the presence of hidden and exposed terminals. "Mobile networks and applications", 2012, vol. 17, núm. 2, p. 258-266.
ISSN1383-469X
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