Wireless Device Dynamic Path Selection for Network Robustness
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Solution Overview
Problem
Tree networks are vulnerable to communication failures and unstable due to fixed communication paths, leading to reduced robustness and reliability, especially in dynamic environments, which limits their application in wide area networks and plant designs.
Innovation Solution
A wireless device equipped with an acquisition unit for network information, a destination determination unit, and a transmission control unit that dynamically selects an efficient communication path by determining the transmittability and hierarchy of connected devices, allowing data transmission to alternate devices if the primary path is disrupted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a tree network with fixed hierarchical communication paths is used, then network formation is simplified and wide area coverage is achieved, but network robustness deteriorates when communication failures occur at higher layer devices
Solution Approach 1:
The patent implements dynamic path selection by enabling wireless devices to switch between fixed hierarchical paths and alternative communication paths based on real-time communication quality assessment. When the fixed tree network path experiences failure or degradation, devices dynamically reroute through peer-to-peer or alternative hierarchical paths, transforming the rigid network into an adaptive system that maintains connectivity despite individual link failures.
Solution Approach 2:
The system monitors communication quality parameters (signal strength, error rates, latency) and changes routing parameters dynamically based on these measurements. When quality thresholds are violated, the system alters the communication path parameters, switching from parent-node routing to alternative routing through other devices, thereby adapting to changing network conditions while maintaining the underlying tree structure.
2Device complexity
If data transmission follows fixed hierarchical paths in a tree network, then network structure is simplified, but communication quality becomes unstable when environment changes
Solution Approach 1:
The patent implements continuous feedback mechanisms where wireless devices monitor communication quality metrics along hierarchical paths and report back to routing controllers. This feedback loop enables the system to detect degradation in communication quality caused by environmental changes (mobility, obstacles, interference) and trigger automatic path rerouting, maintaining stable communication despite external disturbances while preserving the simplified tree structure.
Solution Approach 2:
The system introduces dynamic adaptability to the static tree network by enabling real-time path selection based on environmental conditions. Devices can dynamically switch between fixed hierarchical paths and alternative routes when quality thresholds are violated, transforming the rigid structure into a flexible system that maintains communication stability without increasing fundamental network complexity.
3Reliability
If alternate communication paths are introduced to improve robustness, then network reliability improves, but device complexity increases
Solution Approach 1:
The patent introduces intermediary routing control mechanisms that manage alternate paths without requiring full mesh connectivity. Instead of making every device directly communicate with every other device, intermediary nodes (parent devices or designated relay devices) coordinate path selection and routing decisions, reducing the complexity burden on individual devices while maintaining multiple viable communication paths for improved robustness.
Solution Approach 2:
The system segments the alternative path management function into modular components: quality monitoring modules, path selection modules, and routing execution modules. This segmentation allows complex robustness features to be implemented as separate, manageable functions rather than monolithic complexity, enabling devices to handle multiple paths through standardized interfaces and procedures.
Data Source
AI summary
It is to improve the robustness and the data transfer reliability of a network.When the destination node is the sixty sixth wireless device D66, the second wireless device D2 determines that there is no destination node among neighboring nodes based on the parent-and-child-node information of the first neighboring node information to transfer the data to the first wireless device D1 as a parent node. The first wireless device D1 can communicate within a communicable range AR1 and memorizes network information of the zeroth wireless device D0, the second wireless device D2, the seventh wireless device D7, the eighth wireless device D8, and the seventeenth wireless device D17. The first wireless device D1 determines that the sixty sixth wireless device D66 as a destination node exists at the neighborhood of the seventh wireless device D7 to transfer the data to the seventh wireless device D7. Then, the seventh wireless device D7 determines that the sixty sixth wireless device D66 as a neighboring node is the destination node to transfer the data to the device.