MTC Wireless Link QoS Customization for Networked Control
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Solution Overview
Problem
Current networked control systems lack established procedures for configuring wireless communication links to meet the unique real-time requirements of control applications, such as robotics and industrial processes, leading to inefficiencies and poor performance due to inadequate Quality of Service (QoS) parameters.
Innovation Solution
A method is introduced to configure a networked control system by determining process characteristics and NCS requirements, which are used to customize the quality of service parameters of the Machine Type Communication (MTC) wireless communication link, ensuring appropriate link capability requirements are met, including maximum delay, sampling period, and bandwidth, thereby optimizing resource utilization and control reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If generic QoS parameters are used for wireless communication links, then network resource allocation is simplified, but control application performance deteriorates due to inability to meet specific real-time requirements
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting QoS parameters (bit rate, delay, jitter) based on the specific control application requirements. The system determines appropriate QoS parameters by analyzing the controlled process characteristics and desired controller performance, then configures the wireless communication link accordingly. This allows the same network infrastructure to support diverse control applications with different real-time requirements without requiring complex manual configuration for each case.
2Reliability
If customized QoS parameters are configured for each control application, then control reliability is improved, but system complexity increases due to unique requirements for each application
Solution Approach 1:
The patent implements self-service by enabling the controlled process node to automatically provide its characteristics and control requirements to the controlling node. The system autonomously determines appropriate QoS parameters based on the process characteristics and desired controller performance without requiring manual intervention. This automated approach reduces configuration complexity while maintaining customized QoS for each control application, thereby improving control reliability.
Solution Approach 2:
The patent applies universality by creating a general procedure that can handle diverse control applications through a unified framework. The controlling node uses a standardized process to determine QoS parameters for any controlled process, whether it be robotic control, industrial process control, or other applications. This universal approach allows the system to accommodate unique real-time requirements of different applications without requiring separate configuration methodologies for each case.
3Productivity
If existing LTE architecture QoS provisions are used, then network infrastructure utilization is optimized, but networked control system specific requirements are not met
Solution Approach 1:
The patent applies dynamics by making the QoS configuration adaptive rather than static. The system dynamically determines QoS parameters based on the specific characteristics of the controlled process and the desired controller performance. This dynamic adaptation allows the network infrastructure to be optimized for each control application's real-time requirements while maintaining efficient resource utilization. The controlling node adjusts QoS parameters in response to varying control needs, enabling the same infrastructure to support diverse applications with different performance requirements.
Data Source
AI summary
The present disclosure relates to methods and nodes configured for control link definition in a networked control system, wherein the networked control system comprises a controlling node, a controlled process node and a Machine Type Communication, MTC, wireless communication link between the controlling node and the controlled process node. The method comprises to obtain process characteristics for a process performed in the controlled process node and NCS requirements for an automatic control process to be performed in the NCS. The controlling node also determines link capability requirements for the MTC wireless communication link based on the process characteristics and the NCS requirements. One or more quality of service, QoS, parameters of the MTC wireless communication link are customized based on the determined link capability requirements.