Industrial Control Packet Distribution for Low-Jitter Wireless Timing
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Solution Overview
Problem
Current communication systems in industrial environments face challenges with latency variations when distributing control messages to industrial devices over wireless networks, leading to performance degradation or failed operations.
Innovation Solution
A method and apparatus for transmitting data packets to industrial devices, involving acquiring control messages, generating data packets with device identifiers, and transmitting them to User Equipment (UE) based on estimated radio link quality, ensuring synchronized control and minimizing latency variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If control messages are distributed to multiple industrial devices over a wireless communication network, then the devices can be controlled remotely and coordinated tasks can be performed, but latency variations and jitter occur causing performance degradation or failed operations
Solution Approach 1:
The system performs preliminary actions by buffering control messages at the UE before distributing them to industrial devices. The UE receives control messages from the network node, stores them temporarily in a buffer, and then distributes them to multiple devices. This preliminary buffering action allows the UE to synchronize message distribution timing, reducing latency variations and ensuring reliable delivery even in wireless conditions with inherent jitter.
2Adaptability or versatility
If control messages are sent through a wireless communication network to industrial devices, then flexibility and mobility are improved, but latency jitter increases causing synchronized movement failures
Solution Approach 1:
The UE acts as an intermediary device between the network node and multiple industrial devices. It receives control messages from the network, buffers them, and distributes them to devices with synchronized timing. This intermediary buffering mechanism compensates for wireless latency jitter, ensuring that despite the flexibility of wireless communication, the precision requirements for synchronized movements of multiple devices are maintained.
3Productivity
If control messages are distributed simultaneously to multiple industrial devices, then synchronized control is achieved, but latency variations cause inconsistent arrival times at different devices
Solution Approach 1:
The system performs preliminary buffering of control messages at the UE before distribution. By storing messages temporarily and releasing them in a synchronized manner to multiple devices, the preliminary action of buffering compensates for subsequent transmission timing variations, ensuring that all devices receive and execute control messages at consistent times despite wireless latency variations.
Data Source
AI summary
Embodiments of the present disclosure provide a method for transmission of data for controlling a plurality of industrial devices in an industrial environment. The plurality of industrial devices being connected to a user equipment (UE). The method is performed by a network node in the wireless communication network. The method includes acquiring control messages intended for controlling the plurality of industrial devices, wherein each industrial device is associated with a device identifier. The method includes generating a data packet comprising the control messages, each control message being associated to a corresponding device identifier. The method further includes transmitting the data packet to the UE for distribution of the control messages to the plurality of industrial devices.