Siemens Aktiengesellschaft

Wolfgang Bölderl-Ermel

Jürgen Schimmer

Harald Herberth

Joachim Seidl

Wolfgang Riedl

Stefan Keller

Rene Ermler

Hendrik Gerlach

Richard Schmidt

Johann Arnold

Alexander Kepka

Anja Adling

Stefan Bömoser

Robert Pfont

Franz Köbinger

A system includes a first module configured to collect automation plant-related data that include at least operating data, and to generate based on the operating data manipulation-proof usage data which are then transmitted to a second module configured to determine at least a part of the manipulation-proof usage data, to form a checksum from the at least one part of the manipulation-proof usage data, to transfer the checksum to at least one node of a distributed ledger network, and to store the manipulation-proof usage data in an area outside the distributed ledger network. A third module participates in the distributed ledger network and is configured to obtain the manipulation-proof usage data from the area and to check the correctness of the manipulation-proof usage data by forming a checksum.

Systems and methods for digital authentication of usage data of an automation plant

A method for switching channels in a wireless communication network comprising at least one access point and clients, wherein the communication network as secondary user uses one of a number of possible channels for data communication. In accordance with the invention, data communication occurs between the access point and the number of clients through the first transmit/receive interface of the access point on a first channel. Parallel to the data communication, a check of the possible channels occurs over the transmit/receive interface by a second transmit/receive interface of the access point to determine which of the channels are free channels that are not being used by any primary users. A channel switch from the first channel to one of the free channels occurs if a prioritized use of the first channel by a primary user is established by the access point of the communication network.

Method for switching channels in a wireless communication network

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Wendelstein, Germany

Wolfgang Bölderl-Ermel