Dynamic Relay Selection in Wireless Mesh Networks
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Solution Overview
Problem
In wireless mesh networks, existing methods for determining nodes involved in multi-hop transmission often rely on geographic layouts, which may not accurately reflect the actual radio link quality and propagation environment, leading to inefficient signal transmission.
Innovation Solution
A radio communication system that dynamically determines the nodes involved in signal transmission based on the link qualities between radio nodes, allowing for efficient optimization of communication paths in congested networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If geographic layout methods are used to determine relay nodes, then the determination process is simple, but the transmission efficiency is poor due to inaccurate reflection of actual radio link quality
Solution Approach 1:
The patent changes the determination criterion from static geographic layout to dynamic radio link quality parameters (RSRP, SINR). The third radio node measures these parameters and selects the second radio node with the best link quality as relay, improving transmission efficiency while maintaining reasonable determination complexity
Solution Approach 2:
The third radio node autonomously performs link quality measurement and relay node selection without requiring complex centralized control. The system enables itself to optimize transmission paths through self-measurement and self-decision based on measured parameters
2Productivity
If dynamic link quality measurement is implemented, then transmission efficiency is improved, but the system complexity increases
Solution Approach 1:
The patent uses the second radio node as an intermediary that receives signals from the first radio node and forwards them to the third radio node. This intermediary structure enables dynamic path selection without requiring direct complex interaction between all nodes, managing system complexity through hierarchical relationships
Solution Approach 2:
The third radio node measures link quality only for the specific second radio nodes that are transmitting signals to the first radio node, rather than measuring all possible paths in the network. This partial measurement approach reduces complexity while still achieving efficient path selection
Data Source
AI summary
This wireless communication system comprises: a first wireless node; a second wireless node that transmits a signal to the first wireless node in response to a request from the first wireless node; and a third wireless node that transmits a connection request to the second wireless node in response to reception of the signal. The second wireless node transmits to the third wireless node connection permission for the connection request, and the first wireless node detects the third wireless node by receiving the connection permission.