Multiband CSMA/CA with RTS-CTS strategy

Baher Mawlawi (1, 2) , Jean-Baptiste Do (1) , Nikolai Lebedev (2, 3) , Jean-Marie Gorce (2)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 SOCRATE - Software and Cognitive radio for telecommunications
3 CPE - École Supérieure de Chimie Physique Électronique de Lyon

We present in this paper a new medium access control (MAC) scheme devoted to orthogonal frequency division multiple access (OFDMA) systems which aims at reducing collision probabilities during the channel request period. The proposed MAC relies on the classical carrier sense multiple access/collision avoidance (CSMA/CA) protocol with RTS / CTS ("Request To Send" / "Clear To Send") mechanism. The proposed method focus on the collision probability of RTS messages exploiting a multi-channel configuration for these messages while using the whole band for data transmissions. The protocol may be interpreted as an asynchronous frequency multiplexing of RTS messages. This method achieves strong performance gains in terms of throughput and latency especially in crowded networks. Index Terms—Carrier sense multiple access/collision avoidance (CSMA/CA), multiband, throughput, MAC protocol.

Mots clés: Carrier sense multiple access/collision avoidance (CSMA/CA); MAC protocol.; multiband; throughput

Domaines: Réseaux et télécommunications [cs.NI]

Baher Mawlawi, Jean-Baptiste Do, Nikolai Lebedev, Jean-Marie Gorce. Multiband CSMA/CA with RTS-CTS strategy. Wireless and Mobile Computing, Networking and Communications, Oct 2014, Larnaca, Cyprus. pp.628 - 633, ⟨10.1109/WiMOB.2014.6962236⟩. ⟨hal-01096277⟩