Method and device for time-controlled data transmission in a time-sensitive network

US11018791B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Franz-Josef Götz · Heideck, DE
• An Ninh Nguyen · Nuremberg, DE
• Jürgen Schmitt · Fürth, DE
• Marcel Kiessling · Nuremberg, DE
• Feng Chen · Feucht, DE

Key dates

• Filing date: Mar 13, 2017
• Grant date: May 25, 2021
• Expiry date: Mar 13, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04J3/0694
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

The disclosure relates to a method and device for time-controlled data transmission in a TSN. A new traffic shaping method is described for time-sensitive data streams. The objective is to offer the same real-time performance and configuration complexity as in the prior art but without the need for time synchronization throughout the entire network. The traffic shaper provides that a data frame that is received by a bridge in a first-time interval is passed by this bridge to the next hop/bridge in the next time interval. Each bridge knows the start time of the time interval that belongs to a particular data stream. Each data frame must contain a so-called “delay value,” thus a delay value which is measured by each bridge using a local clock that measures the delay time spent by the data frame in the queue at the outgoing port.