Patent ID: 9628327
Date: 2017-04-18
CPC Classifications: H04J,H04L

Claim:
1. A method for the redundant transmission of messages in a distributed real-time system, wherein the real-time system comprises two or more computing nodes and one or more star couplers, wherein the computing nodes are connected to the star couplers by means of bidirectional communication lines, and the star couplers are interconnected by the bidirectional communication lines, and wherein the star couplers connected by the bidirectional communication lines form a network infrastructure, and wherein at least some of the messages are sent redundantly, and wherein messages belonging to a message stream have the same identity, the method comprising: performing one or more activity rasters by one or more star couplers of the network infrastructure, wherein an activity raster in each case consists of alternating active phases and rest phases, wherein all active phases of an activity raster have the same active phase duration, and wherein all rest phases of an activity raster have the same rest phase duration, and wherein the activity phase duration and the rest phase duration of an activity raster are the same or different, and assigning each message sent in the network infrastructure in accordance with its identity to precisely one activity raster by the star couplers, and wherein the messages are sent only in active phases, such that a receiver receiving messages detects that the messages are redundant copies of the same message when the receiver receives messages with the same identity within a time interval, which time interval has a duration corresponding to the active phase duration of the activity raster for messages having this identity.