Industrial TSN Stream Reservation Sleep Mode for Fast Reactivation
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Solution Overview
Problem
In industrial Time Sensitive Networking (TSN) environments, the scaling problem arises due to increased network control information and limited memory and processing power in nodes like bridges or switches, leading to inefficient resource usage when stream participants are temporarily inactive, causing reserved bandwidth to be unused and requiring lengthy recalculation upon reactivation.
Innovation Solution
Implementing a 'sleep mode' where stream participants send a sleep message to release reserved resources for lower-priority data transmission, allowing these resources to be reused without delaying their availability when the participant resumes activity, while maintaining reservation settings for quick reactivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reserved resources are maintained for inactive stream participants, then quick reactivation is enabled, but network resource utilization deteriorates
Solution Approach 1:
The system dynamically adjusts resource allocation based on stream participant activity state. When a participant enters sleep mode, resources are temporarily released for lower-priority traffic; upon waking, resources are rapidly re-allocated through a streamlined process that preserves reservation settings while freeing bandwidth during the interim period.
2Loss of energy
If reserved resources are released for lower-priority traffic, then network resource utilization improves, but reactivation time increases
Solution Approach 1:
The system performs preliminary actions by maintaining reservation settings and configuration data in a suspended state during sleep mode. This preliminary preservation of booking settings allows for rapid resource re-allocation upon wake-up, avoiding full recalculation while enabling other traffic to use released resources during the inactive period.
3Loss of energy
If complete stream configuration is deleted upon participant removal, then resources become available immediately, but recalculation overhead increases upon reconnection
Solution Approach 1:
The system selectively discards active resource allocations when participants enter sleep mode, allowing resources to be recovered and used by other traffic. Upon reactivation, the system recovers the discarded resources through a simplified re-allocation process that leverages preserved reservation settings, avoiding complete recalculation while ensuring resources are properly assigned.
Data Source
Figure 1~3
Figure 4~5
AI summary
The invention relates to a method for data communication in a particularly industrial network, in which a stream (6) is created between at least two stream subscribers (1, 4), where resources are reserved on at least one node point, particularly bridges (2) and/or switches between the at least two stream subscribers (1, 4), and subsequently data is transmitted between the at least two stream subscribers (1, 4), via the stream, and at least one subscriber (4) of the stream (6) interrupts the emitting and/or receiving of data via the stream (6) and resources that are reserved on at least one node point (2) for the at least one subscriber (4) of the stream (6) are released for use for a data transmission which is lower priority than the data transmission via the stream (6), the reservation of the resources being maintained for the at least one subscriber (4). The invention further relates to a control method, a device, a computer program and a computer-readable medium.