Industrial TSN Stream Reservation Sleep Mode for Idle Subscribers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In industrial networks using Time Sensitive Networking (TSN), reserved resources for stream communication are not optimally utilized when stream subscribers are temporarily inactive, leading to resource wastage and hindering network efficiency, especially during reactivation after temporary removal or deactivation of devices.
Innovation Solution
Implementing a 'sleep mode' where resources reserved for inactive stream subscribers are released for lower priority data transfers, maintaining the reservation configuration and allowing immediate reactivation without recalculating scheduling, using sleep and wake-up messages to manage resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resources are reserved for stream subscribers to guarantee real-time data transfer, then quality of service is improved, but network resource utilization deteriorates when subscribers are temporarily inactive
Solution Approach 1:
The patent implements a dynamic resource reservation mechanism where the state of resource reservation is changed based on the activity status of stream subscribers. When a subscriber is temporarily inactive, the system transitions from a reserved state to a released state, allowing other traffic to use the resources. This dynamic adjustment resolves the contradiction by making the reservation status adaptive rather than static.
Solution Approach 2:
The system changes the parameter of resource availability by introducing a sleep mode indicator that can be set to different values (e.g., 0 for active, 1 for inactive). This parameter change allows the network to distinguish between permanent and temporary inactivity, enabling selective resource release while maintaining QoS guarantees for active streams.
2Productivity
If resources are released for lower priority traffic when stream subscribers are inactive, then network efficiency is improved, but reactivation time deteriorates without the sleep mode mechanism
Solution Approach 1:
The system performs preliminary actions by setting a sleep mode indicator before completely releasing resources. This preliminary state indicates to the network that resources may be temporarily released for other uses, but the stream configuration is preserved. When reactivation is needed, the pre-preserved configuration allows rapid restoration without full recalculation, thus resolving the time efficiency contradiction.
Solution Approach 2:
The sleep mode indicator acts as an intermediary mechanism between complete resource reservation and complete resource release. It creates a intermediate state where resources can be temporarily allocated to lower priority traffic while maintaining the ability to quickly restore the original stream configuration, thus balancing network efficiency with reactivation speed.
3Manufacturing precision
If complete configuration is performed when stream subscribers reactivate, then resource allocation accuracy is improved, but reactivation time deteriorates
Solution Approach 1:
The system extracts the essential stream configuration parameters and preserves them in a simplified form during sleep mode. Instead of maintaining the complete complex configuration, only the critical identification and parameter data are retained. This extraction allows rapid reactivation by avoiding full configuration recalculation while still ensuring accurate resource allocation through the preserved essential parameters.
Data Source
AI summary
A control method, device, computer program and a computer-readable medium and method for data communication in an industrial network, wherein a stream is created between at least two stream subscribers, where resources are reserved on at least one node point, particularly bridges and/or switches between the at least two stream subscribers, and subsequently data is transmitted between the at least two stream subscribers, via the stream, and at least one subscriber of the stream interrupts the emittance and/or reception of data via the stream and resources that are reserved on at least one node point for the at least one subscriber of the stream are released for use for a data transmission that is lower priority than the data transmission via the stream, and where the reservation of the resources being maintained for the at least one subscriber.