Specification of Collision-Free CSMA MAC Protocols for Wireless LANs

Guy Juanole (1) , Xuan Hung Nguyen (1) , Gérard Mouney (1)

1 LAAS-SARA - Équipe Services et Architectures pour Réseaux Avancés

Collision-free CSMAMAC protocols are interesting solutions for considering real-time traffic in a wireless context. The goal of this paper is precisely to make an exhaustive presentation (which, we think to be understandable and pedagogical) of the main collision-free CSMA MAC protocols for one-hop wireless LANs, considering priorities (static, hybrid [4]) associated to the frames. The priorities are represented by either the BlackBurst technique [10], [7] or an adaptation of the CAN bus protocol [2] to the wireless context we call CANlike protocol [11], [9], [5]. The cornerstone of this work is the concept of Ambiguity Time Window that we have defined for characterizing the Physical layer, and which allows to specify the parameters of the considered protocols. In our knowledge, such kind of study has never been done.

Mots clés: Networked Control System; MAC protocol; Wireless Network; Quality of Service; Industrial Communication

Domaines: Systèmes embarqués

Guy Juanole, Xuan Hung Nguyen, Gérard Mouney. Specification of Collision-Free CSMA MAC Protocols for Wireless LANs. 2012. ⟨hal-00668745v2⟩