Wireless Backhaul Node Channel Switching for Radar DFS
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Solution Overview
Problem
In wireless backhaul systems, the detection of radar waves necessitates channel switching by individual nodes, leading to communication disruptions due to regulatory requirements, which complicates maintaining a mesh network when multiple channels are used across nodes.
Innovation Solution
Implementing a system where all nodes monitor the same monitoring channel and switch simultaneously upon radar detection, utilizing access and backhaul line communication sections to manage channel changes efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each node performs independent channel switching upon radar detection, then regulatory compliance is achieved, but communication disruption time increases and mesh network stability deteriorates
Solution Approach 1:
The patent merges the channel switching actions of all nodes by having them monitor a common monitoring channel and switch to the same alternative channel simultaneously when radar is detected. This coordinated approach combines individual node responses into a unified network-wide action, reducing communication disruption time while maintaining mesh network stability.
Solution Approach 2:
The patent implements preliminary monitoring of alternative channels before radar detection occurs. Nodes continuously monitor designated monitoring channels in advance, so when radar is detected on the current channel, the alternative channel is already prepared and ready for immediate switching, thereby reducing communication disruption time.
2Productivity
If all nodes use the same channel for backhaul communication, then high-speed DFS is achievable, but network adaptability to different radar situations decreases
Solution Approach 1:
The patent applies local quality by allowing different nodes to have different monitoring channels assigned based on their local conditions and radar detection patterns. While all nodes use the same channel for backhaul communication to enable fast switching, the monitoring channel assignments can be customized locally to adapt to specific radar environments at each node.
Solution Approach 2:
The patent implements dynamics by allowing the monitoring channel assignments to be dynamically adjusted based on radar detection patterns and network conditions. The system can adaptively change which channels are monitored by which nodes, enabling both fast DFS switching and adaptability to different radar situations.
3Reliability
If nodes monitor multiple channels independently, then radar detection coverage is improved, but device complexity and coordination difficulty increase
Solution Approach 1:
The patent applies universality by having all nodes perform the same basic monitoring function on a designated monitoring channel. Instead of each node independently monitoring multiple channels with different configurations, all nodes universally monitor the same type of channel, simplifying the monitoring coordination while maintaining comprehensive radar detection coverage through the network-wide monitoring effort.
Data Source
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AI summary
This node used for a wireless backhaul system comprises: an access line communication unit which uses a first channel to communicate with a terminal device; a backhaul line communication unit which uses a second channel to communicate with an adjacent node and transmits, to the adjacent node, monitor channel information indicating a third channel; and a monitor unit which monitors radar waves with respect to the third channel.