Open Access

Persistent RCSMA: A MAC Protocol for a Distributed Cooperative ARQ Scheme in Wireless Networks

  • J. Alonso-Zárate1Email author,
  • E. Kartsakli2,
  • Ch. Verikoukis1 and
  • L. Alonso2
EURASIP Journal on Advances in Signal Processing20082008:817401

Received: 15 November 2007

Accepted: 2 April 2008

Published: 9 April 2008


The persistent relay carrier sensing multiple access (PRCSMA) protocol is presented in this paper as a novel medium access control (MAC) protocol that allows for the execution of a distributed cooperative automatic retransmission request (ARQ) scheme in IEEE 802.11 wireless networks. The underlying idea of the PRCSMA protocol is to modify the basic rules of the IEEE 802.11 MAC protocol to execute a distributed cooperative ARQ scheme in wireless networks in order to enhance their performance and to extend coverage. A closed formulation of the distributed cooperative ARQ average packet transmission delay in a saturated network is derived in the paper. The analytical equations are then used to evaluate the performance of the protocol under different network configurations. Both the accuracy of the analysis and the performance evaluation of the protocol are supported and validated through computer simulations.

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Authors’ Affiliations

Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Castelldefels, Barcelona, Spain
Department of Signal Theory and Communications, Escola Politècnica Superior de Castelldefels (EPSC), Universitat Politècnica de Catalunya (UPC), Castelldefels, Barcelona, Spain


© J. Alonso-Zárate et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.