Wireless Mesh Network Node Segmentation for Latency Reduction
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Solution Overview
Problem
In industrial settings, wireless mesh networks face challenges in maintaining connectivity between clusters of nodes due to environmental or physical constraints, which limits the range and reliability of message transmission, especially when installing additional nodes is impossible or costly.
Innovation Solution
The implementation of a flat wireless mesh network using nodes with higher gain Yagi antennas and MIMO technology, allowing direct communication between nodes and reducing the number of hops required for message transmission, thereby increasing the link budget and range without the need for additional nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If traditional low power radios are used in wireless mesh networks, then battery life is extended, but communication range and reliability deteriorate
Solution Approach 1:
The network is segmented into different node types: battery-powered nodes with low power radios and AC-powered nodes with high gain Yagi antennas and MIMO technology. This segmentation allows the system to distribute communication tasks across nodes with different capabilities, enabling long-range reliable communication while preserving battery life for portable nodes.
Solution Approach 2:
Different nodes are equipped with different radio characteristics based on their specific roles and power availability. AC-powered gateway nodes use high gain Yagi antennas and MIMO for extended range and reliability, while battery-powered sensor nodes use low power radios. This local differentiation optimizes overall network performance without compromising individual node battery life.
2Reliability
If additional intermediate nodes are installed to extend communication range, then network coverage is improved, but installation cost and complexity increase
Solution Approach 1:
AC-powered gateway nodes serve multiple functions: they act as mesh network participants, provide wireless-to-wired communication bridges, and function as relay nodes for extending coverage. This multi-functionality reduces the need for dedicated intermediate nodes, simplifying network deployment while maintaining connectivity.
3Area of stationary object
If more hops are used for message transmission, then network coverage area is expanded, but latency increases
Solution Approach 1:
The system changes the radio parameters (gain, antenna type, MIMO configuration) of specific nodes to extend transmission range. By increasing the link budget at gateway nodes through high gain Yagi antennas and MIMO technology, messages can traverse longer distances in fewer hops, reducing latency while expanding coverage area.
Data Source
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AI summary
A wireless mesh network that makes use of strategically placed nodes with radios having superior communication range through the use of high gain antennas, MIMO technology, high power transmitters, high sensitivity receivers, a combination thereof, etc. Besides the obvious effect of extending the physical coverage area of a network, the effect of the longer distance links formed by the nodes with superior range is a flattening of the wireless mesh network by reducing hop count, thereby improving performance, latency, reliability, cost, and power consumption among other factors.