Adaptive time offset compensation for TDMA industrial wireless networks
Autor: | Adam Kozłowski, Janusz Sosnowski |
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Rok vydání: | 2021 |
Předmět: |
Computer Networks and Communications
Computer science Wireless network Node (networking) 010401 analytical chemistry Real-time computing Time division multiple access 020206 networking & telecommunications 02 engineering and technology Energy consumption 01 natural sciences Synchronization 0104 chemical sciences Compensation (engineering) Microcontroller Hardware and Architecture UTC offset 0202 electrical engineering electronic engineering information engineering Software |
Zdroj: | Ad Hoc Networks. 119:102507 |
ISSN: | 1570-8705 |
DOI: | 10.1016/j.adhoc.2021.102507 |
Popis: | Wireless network nodes working in industrial environment or mounted on mobile machines are exposed to frequent and unpredictable temperature changes, which impact local clock accuracy resulting in synchronization problems (time offset). These issues have to be taken into account when optimizing the network to avoid higher energy consumption and traffic congestion. The time offset problem can be alleviated using temperature driven compensation. In the paper we propose an efficient algorithm to resolve this problem taking into account slow and rapid temperature fluctuations. It combines the physical model of the node oscillator with an original prediction method based on the linear regression. It can be embedded in low cost microcontrollers with limited resources. Our approach needed some experimental studies of oscillator features and microcontroller capabilities. The implemented prototype nodes and performed tests proved high clock resilience for industrial environment as compared with other approaches. |
Databáze: | OpenAIRE |
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