Timer-Based Distributed Channel Access for Control Over Unknown Unreliable Time-Varying Communication Channels
Paper in proceedings, 2019

We consider the resource allocation problem for a system consisting of multiple control subsystems that share an unknown unreliable time-varying wireless channel. We propose a novel method for granting channel access deterministically without requiring information exchange between subsystems, based on local timers for prioritizing channel access with respect to a local cost that takes into account the (initially unknown) channel conditions. We propose a novel setup which has the capability of learning the parameters of imperfect communication links while ensuring distributed collision-free implementation. More specifically, we adopt learning algorithms for estimating the channel quality and, hence, define the local cost as a function of this estimation and control performance. The efficacy of this mechanism is evaluated via simulations.

Wireless networked control systems



distributed channel access

cost of information loss


Tahmoores Farjam

Charalambous Themistoklis

Henk Wymeersch

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

2019 18th European Control Conference (ECC)
Naples, Italy,

Subject Categories


Communication Systems

Signal Processing



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