Thorough Analysis of IEEE 802.11 EDCA in Ring Topology Scenarios with Hidden and Exposed Nodes

  • Katarzyna Kosek
  • Marek Natkaniec
  • Luca Vollero
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5592)


In this paper the authors present a simulation study of five different ring networks with hidden and exposed nodes in which the IEEE 802.11 EDCA function is used as the MAC protocol. The presented analysis is crucial for understanding how the theoretically simple ring topology can be degraded by the presence of hidden and exposed nodes. Configurations with equal and mixed priorities are considered. Additionally, the usefulness of the four-way handshake mechanism is argued. Furthermore, the achieved results are compared with the results obtained for several star and line topology networks. Finally, the authors signalize the need for a better MAC protocol.


Ad-hoc exposed nodes hidden nodes QoS provisioning 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Katarzyna Kosek
    • 1
  • Marek Natkaniec
    • 1
  • Luca Vollero
    • 2
  1. 1.Department of TelecommunicationsAGH University of Science and TechnologyKrakowPoland
  2. 2.Consorzio Interuniversitario Nazionale per l’InformaticaUniversity of NaplesNaplesItaly

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