Design of Distributed Network Clock-Synchronization for Swarm UAV

Guo, Mingming; Wang, Feng; Peng, Fei; Lin, Shicong

doi:10.1109/cds49703.2020.00046

Cited by 5 publications

(1 citation statement)

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“…Often in distributed autonomous systems GPS is used for clock synchronization in agents. TSN provides further improvements by providing a shared sub-microsecond time reference to the network's nodes, which can overcome GPS's existing constraints [129]. In addition to the decrease in latency, communication times, and improve synchronization, a precise time-stamping of measured data can also be used to compensate for further delays introduced by the measurement, processing, and control chain.…”

Section: Tsn In Time-critical Possibly Wireless-based Measurement Sys...mentioning

confidence: 99%

A Comprehensive Review on Time Sensitive Networks with a Special Focus on Its Applicability to Industrial Smart and Distributed Measurement Systems

Fedullo

Morato

Tramarin

et al. 2022

Sensors

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The groundbreaking transformations triggered by the Industry 4.0 paradigm have dramatically reshaped the requirements for control and communication systems within the factory systems of the future. The aforementioned technological revolution strongly affects industrial smart and distributed measurement systems as well, pointing to ever more integrated and intelligent equipment devoted to derive accurate measurements. Moreover, as factory automation uses ever wider and complex smart distributed measurement systems, the well-known Internet of Things (IoT) paradigm finds its viability also in the industrial context, namely Industrial IoT (IIoT). In this context, communication networks and protocols play a key role, directly impacting on the measurement accuracy, causality, reliability and safety. The requirements coming both from Industry 4.0 and the IIoT, such as the coexistence of time-sensitive and best effort traffic, the need for enhanced horizontal and vertical integration, and interoperability between Information Technology (IT) and Operational Technology (OT), fostered the development of enhanced communication subsystems. Indeed, established technologies, such as Ethernet and Wi-Fi, widespread in the consumer and office fields, are intrinsically non-deterministic and unable to support critical traffic. In the last years, the IEEE 802.1 Working Group defined an extensive set of standards, comprehensively known as Time Sensitive Networking (TSN), aiming at reshaping the Ethernet standard to support for time-, mission- and safety-critical traffic. In this paper, a comprehensive overview of the TSN Working Group standardization activity is provided, while contextualizing TSN within the complex existing industrial technological panorama, particularly focusing on industrial distributed measurement systems. In particular, this paper has to be considered a technical review of the most important features of TSN, while underlining its applicability to the measurement field. Furthermore, the adoption of TSN within the Wi-Fi technology is addressed in the last part of the survey, since wireless communication represents an appealing opportunity in the industrial measurement context. In this respect, a test case is presented, to point out the need for wirelessly connected sensors networks. In particular, by reviewing some literature contributions it has been possible to show how wireless technologies offer the flexibility necessary to support advanced mobile IIoT applications.

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Section: Tsn In Time-critical Possibly Wireless-based Measurement Sys...mentioning

confidence: 99%