Version 1
: Received: 30 March 2018 / Approved: 30 March 2018 / Online: 30 March 2018 (16:33:11 CEST)
How to cite:
Tramarin, F.; Narduzzi, C.; Vitturi, S.; Bertocco, M. A Calibrated Test-set for Measurement of Access-Point Time Specifications in Hybrid Wired/Wireless Industrial Communication. Preprints2018, 2018030277. https://doi.org/10.20944/preprints201803.0277.v1
Tramarin, F.; Narduzzi, C.; Vitturi, S.; Bertocco, M. A Calibrated Test-set for Measurement of Access-Point Time Specifications in Hybrid Wired/Wireless Industrial Communication. Preprints 2018, 2018030277. https://doi.org/10.20944/preprints201803.0277.v1
Tramarin, F.; Narduzzi, C.; Vitturi, S.; Bertocco, M. A Calibrated Test-set for Measurement of Access-Point Time Specifications in Hybrid Wired/Wireless Industrial Communication. Preprints2018, 2018030277. https://doi.org/10.20944/preprints201803.0277.v1
APA Style
Tramarin, F., Narduzzi, C., Vitturi, S., & Bertocco, M. (2018). A Calibrated Test-set for Measurement of Access-Point Time Specifications in Hybrid Wired/Wireless Industrial Communication. Preprints. https://doi.org/10.20944/preprints201803.0277.v1
Chicago/Turabian Style
Tramarin, F., Stefano Vitturi and Matteo Bertocco. 2018 "A Calibrated Test-set for Measurement of Access-Point Time Specifications in Hybrid Wired/Wireless Industrial Communication" Preprints. https://doi.org/10.20944/preprints201803.0277.v1
Abstract
In factory automation systems, hybrid wired/wireless networks are often deployed to connect devices of difficult reachability such as those mounted on mobile equipment. A widespread version of these networks makes use of Access Points (APs) to implement wireless extensions of Real--Time Ethernet (RTE) networks via the IEEE 802.11 Wireless LAN (WLAN). Unfortunately, APs may introduce random delays in packet forwarding, mainly related to the their internal behaviors (e.g. code processing times) that negatively impact on the whole performance of the automation systems. Consequently, the knowledge of these delays represent a crucial design information. This paper presents an original and effective method to measure the delays introduced by APs, exploiting a hybrid loop-back link and a simple set-up with moderate instrumentation requirements. The method, which requires an initial calibration by means of a reference AP, has been successfully tested on some commercial APs. As it will be shown, the proposed measurement procedure is general and, as such, can be profitably adopted in even different scenarios.
Computer Science and Mathematics, Information Systems
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
