WirelessHART Bandwidth Allocation for Acyclic Data Transfer
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Solution Overview
Problem
Current WirelessHART Network Managers do not optimize bandwidth schedules for acyclic data access, leading to high latency and inefficient bandwidth usage during commissioning, diagnosis, or monitoring tasks, as they statically reserve bandwidth without dynamic adjustment, affecting the performance of process automation systems.
Innovation Solution
A method that uses a P1-aware component to detect the start and end of volume data transfers and requests additional bandwidth using standardized HART commands, such as the Fast-Pipe functionality, to dynamically adjust bandwidth allocation during acyclic data access, optimizing communication time and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bandwidth is statically reserved for acyclic data access, then communication reliability is improved, but bandwidth efficiency deteriorates because more bandwidth is permanently reserved and blocked for other uses
Solution Approach 1:
The patent implements dynamic bandwidth allocation where the P1-aware component monitors data transfer volumes and adjusts bandwidth allocation in real-time. During acyclic operations requiring large data transfers, additional bandwidth is allocated; during normal cyclic operations, bandwidth returns to standard allocation. This dynamic adjustment resolves the contradiction by providing reliable bandwidth when needed without permanently reserving excess capacity that would reduce overall bandwidth efficiency.
2Speed
If more bandwidth is allocated to acyclic data transfer, then communication speed is improved, but bandwidth efficiency deteriorates because bandwidth is permanently reserved for other uses
Solution Approach 1:
The system dynamically adjusts bandwidth allocation based on actual transfer needs. When large data transfers are detected during commissioning, diagnosis, or monitoring, the P1-aware component requests additional bandwidth to improve communication speed. When transfers complete, bandwidth allocation returns to normal levels, maintaining bandwidth efficiency. This dynamic approach resolves the contradiction between speed and efficiency.
Solution Approach 2:
The patent changes the bandwidth parameter dynamically based on operational conditions. The P1-aware component monitors data transfer characteristics and adjusts the bandwidth parameter upward during acyclic large transfers and downward during normal operations. This parameter adjustment resolves the contradiction by optimizing speed when needed while preserving bandwidth efficiency during normal operation.
3Device complexity
If static bandwidth allocation is used, then device complexity is reduced, but productivity deteriorates due to high latency during acyclic access
Solution Approach 1:
The P1-aware component automatically detects when large data transfers are needed and self-initiates bandwidth allocation requests without requiring manual configuration or complex centralized control. This self-service approach improves productivity by reducing latency during acyclic access while keeping device complexity relatively low, as the automation is localized to the P1-aware component rather than requiring system-wide complexity increases.
4Reliability
If bandwidth is requested explicitly using standard HART commands, then communication reliability is improved, but loss of time increases due to manual bandwidth request overhead
Solution Approach 1:
The P1-aware component automatically monitors data transfer patterns and self-initiates bandwidth requests using standard HART commands when acyclic large transfers are detected. This eliminates the need for manual bandwidth request intervention, reducing the time loss associated with explicit bandwidth requests while maintaining the reliability benefits of proper bandwidth allocation. The system performs the bandwidth management task automatically as part of its data transfer monitoring function.
Data Source
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AI summary
The invention relates to a Process automation system having at least one wirelessaware component for detection of the occurrence i.e. start and end of a wireless volume data transfer from at least one other component which might be a wireless- unaware component whereas upon such detection the at least one wireless-aware component requests for bandwidth on behalf of that wireless-unaware component to decrease the communication time and subsequently releases this bandwidth again. Furthermore the invention relates to a method for operation of the process automation system whereas an upload/download is generally detected by either explicit initiation of the up/download in the wireless-aware component, or by automatic detection in the wireless-aware component.