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.

cost of information loss

distributed channel access



Wireless networked control systems


Tahmoores Farjam

Aalto University

Themistoklis Charalambous

Aalto University

Henk Wymeersch

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

2019 18th European Control Conference (ECC)

Vol. June 2019 2975-2982 8796060

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

Subject Categories


Communication Systems

Signal Processing



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