Prioritized Routing Protocol for RF Mesh Networks
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Solution Overview
Problem
Frequency hopping radio frequency (RF) mesh networks in industrial monitoring and control systems face challenges such as interference, signal path disruptions, and inefficient communication protocols, which can lead to suboptimal performance and reliability.
Innovation Solution
A processor-based radio device with a prioritized communications protocol that uses a look-up table for path metrics and delayed transmission of route request and reply messages to optimize communication paths, ensuring reliable data transmission through multiple and redundant signal paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency hopping RF mesh networks are used for industrial monitoring and control, then robustness against interference and signal path disruptions is improved, but communication protocol efficiency and reliability deteriorate due to collisions and suboptimal path selection
Solution Approach 1:
The system performs preliminary routing calculations and path metric assessments before actual data transmission. The processor-based control devices pre-determine optimal communication paths using look-up tables stored with path metrics, ensuring that when transmission is needed, the most reliable path is already identified and ready, avoiding protocol collisions and inefficiencies
Solution Approach 2:
The communication protocol dynamically adjusts path selection based on real-time signal path availability and quality. The system continuously monitors and updates path metrics in the look-up tables, allowing the mesh network to adapt to changing interference conditions and signal disruptions, selecting the best available path for each transmission
2Adaptability or versatility
If multiple radio devices communicate simultaneously in the mesh network, then network coverage and redundancy are improved, but signal collisions and communication conflicts increase
Solution Approach 1:
The communication protocol incorporates feedback mechanisms where receiving devices send acknowledgments and path quality information back to transmitting devices. This feedback allows the network to adjust transmission parameters, avoid collisions by coordinating simultaneous transmissions, and maintain reliability as network coverage expands with more radio devices
Solution Approach 2:
The network segments communication into controlled time slots and priority levels. The processor-based control devices use the prioritized communication protocol to divide transmission opportunities, ensuring that critical data transmissions occur without collision while maintaining comprehensive network coverage through coordinated multi-device operation
Data Source
AI summary
Devices, networks, systems and methods for coordinating industrial control and monitoring communications on multi-path radio frequency transmission mesh networks include establishing path metrics allowing a respective comparison of a plurality of available communication paths between neighboring radios communicating in the mesh network. Replies to route requests may be delayed based on the path metrics of available paths for message transmission to ensure that the best available connection routes through the mesh network can be understood and utilized.