Improving Effectiveness of Seamless Redundancy in Real Industrial Wi-Fi
Networks
- Gianluca Cena ,
- Stefano Scanzio ,
- Adriano Valenzano
Abstract
Reliability and determinism of Wi-Fi can be tangibly improved by means
of seamless redundancy, to the point of making this technology suitable
for industrial environments. As pointed out in recent papers, the most
benefits can be achieved when no phenomena can simultaneously affect
transmissions on all channels of a redundant link. In this paper,
several aspects are analyzed which, if not properly counteracted, may
worsen seamless redundancy effectiveness. Effects they cause on
communication have been experimentally evaluated in real testbeds, which
rely on commercial Wi-Fi devices. Then, practical guidelines are
provided, which aim at preventing joint interference through a careful
system design. Results show that measured communication quality can be
made as good as expected in theory.May 2018Published in IEEE Transactions on Industrial Informatics volume 14 issue 5 on pages 2095-2107. 10.1109/TII.2017.2759788