Verfahren und System zur Drahtlosen Tdma Kommunikation für Industrielle Maschine-Zu-Maschine-Kommunikation

Details

Veröffentlichungs-Nr.

EP3709726

Aktenzeichen

EP19162695

Anmeldetag

14. März 2019

Veröffentlichung

28. Juni 2023

Erteilung

28. Juni 2023

Rechtsraum

EP

IPC

H04W56/00H04J3/06

Abstract

Communication methods (100, 200, 300) for wireless TDMA communication using a super-frame structure (10A, 10B) between a first node (2) and at least one second node (3.k) is provided. In embodiments the second nodes (3.k) transmit payload data in uplink frames (ULk) that comprises a piggybacked field for time indicating data (T3.k), and preferably a field (ADLk) for acknowledging a received downlink transmission. The first node (2) is configured for calculating a clock offset and propagation delay based on the received time indicating data. In embodiments, the first node (2) is configured to transmit calculated clock offsets and propagation delay data, and preferably acknowledgements, in piggybacked fields of a downlink payload data frame, such as a beacon 10A, 10B, to the second nodes 3.1-3.n. These embodiments aims at providing high reliability and low latency for industrial machine-to-machine communications, where time indicating data, synchronization data, and acknowledgement are efficiently transferred and an efficient synchronization may provide absolute time useful for time critical control applications.

Anmelder

Firmen

Hitachi Energy Ltd
Hitachi Energy Switzerland AG
ABB Power Grids Switzerland AG
ABB Schweiz AG

Land

🇨🇭 Schweiz

Fachgebiete