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Wireless Personal Communications

, Volume 85, Issue 4, pp 2169–2190 | Cite as

RegionDCF: A Self-Adapting CSMA/Round-Robin MAC for WLAN

  • Javier GomezEmail author
  • Alberto Riggi
Article
  • 152 Downloads

Abstract

This paper presents RegionDCF, a self-adapting Media Access Control protocol for WLAN that seamlessly behaves as either CSMA or round-robin access methods simultaneously taking advantage of their most effective properties. In contrast to preceding works in this area that focused on enhancements of a particular access protocol, or on a mechanism that switches between different access protocols, this paper proposes a single access protocol capable of behaving simultaneously as a pure contention-based (e.g., CSMA) and as a round-robin-based protocol depending on traffic conditions. The main building block of the proposed protocol is the region, a cluster of nodes that establishes orderly access to the channel. Once a member of a region gains channel access through a contention-based protocol, it allows contention-free transmission to all other members of the region in a round-robin manner. The functionality of the protocol for UDP and TCP traffic is discussed. Simulation results show that RegionDCF outperforms standard CSMA-based IEEE 802.11 Distributed Coordination Function in many aspects, including higher throughput and channel efficiency.

Keywords

RegionDCF DCF CSMA TDMA Round-robin  Hybrid MAC IEEE 802.11 

Notes

Acknowledgments

This work was supported in part by research funds from DGAPA-PAPIIT IN114813.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Telecommunications Engineering DepartmentNational Autonomous University of MexicoCoyoacanMexico
  2. 2.Information Engineering DepartmentUniversity of PisaPisaItaly

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