Schedulability Analysis and GCL Computation for TimeSensitive Networks Industrial automation networks are composed of cyberphysical systems where frame delays and jitter influence significantly the quality of communication between control and field devices. Due to these constraints, such systems are often served by dedicated Fieldbus networks which are different from networks for enterpriselevel connectivity. However, with the introduction of Timesensitive Networking standards which are already integrated into IEEE 802.1Q2018 standards in essential parts, the long expected single converged network for anytype communication in the field, control, and enterprise level is within reach. With it, comes the challenge of synthesizing schedules to obtain parameters for configuring the network bridges for timetriggered communication services.This paper provides a scheduling verification, and Gate Control event computation algorithm focused on asserting the viability of scheduling communication services for multiple independent periodic Talker applications on IEEE 802.1Q Time Sensitive Networks as well as the computation of Gate Control Lists for the bridges.

Embedded systems for timexe2x80x93critical applications over WiFi: design and experimental assessment Networked embedded systems for industrial control based on wireless support provide several advantages over wired counterparts, but often reveal unsuitable for the most demanding industrial control applications, such as advanced manufacturing and cooperative robotics. Data exchange over IEEE 802.11 networks may theoretically represent an appropriate solution for timexe2x80x93critical applications, provided that unreliability and nonxe2x80x93 determinism issues are properly handled. In this respect, this paper hence proposes an original solution, based on a crossxe2x80x93 layer approach, to allow the realization of highxe2x80x93speed industrial controlxe2x80x93overxe2x80x93WiFi networked embedded systems. The proposal implements a novel robust framexe2x80x93delay state estimator, a time efficient communication policy, and a specific tuning of critical protocol parameters. Suitable hardwarexe2x80x93inxe2x80x93thexe2x80x93loop experiments have been carried out implemented exploiting two different embedded systems. Preliminary results show that the proposed architecture enables industrial control applications requiring a sampling rate of up to 1 kHz, even in presence of non negligible communication errors.