Wireless Network Interference Avoidance via Node Segmentation
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Solution Overview
Problem
Existing wireless networks face interference issues when their coverage areas overlap, leading to capacity degradation and potential communication disruptions, as devices in one network may interfere with each other despite not being in the overlapping area.
Innovation Solution
The method involves acquiring mapping information between nodes of overlapping wireless networks, identifying interfering and non-interfering subsets, and dynamically adjusting channel reservations to prevent interference by allowing only non-interfering nodes to transmit during reserved periods, using mutual exclusion groups to manage these subsets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If channel reservations are implemented in overlapping wireless networks, then transmission reliability is improved, but interference between networks increases due to simultaneous transmissions
Solution Approach 1:
The patent segments the wireless network nodes into different subsets (first subset and second subset) based on their interference relationships with neighboring networks. This segmentation allows the access point to apply different transmission rules to different subsets, preventing interference while maintaining reliable transmissions for non-interfering nodes.
Solution Approach 2:
The patent applies local quality by making the channel reservation status network-specific and node-specific. Each subset of nodes receives different channel reservation treatments based on their local interference characteristics with neighboring networks, rather than applying a uniform reservation policy across all nodes.
2Productivity
If all nodes are allowed to transmit during channel reservations, then network capacity is improved, but interference and communication disruptions increase
Solution Approach 1:
The patent enables different transmission permissions for different subsets of nodes based on their specific interference relationships. Nodes in the second subset (non-interfering nodes) are allowed to transmit during channel reservations, while nodes in the first subset (interfering nodes) are restricted, achieving local optimization of transmission capacity.
Solution Approach 2:
The patent dynamically changes the transmission parameters (channel reservation status) for different node subsets based on their interference characteristics. This parameter differentiation allows the system to maximize network capacity for non-interfering nodes while preventing interference from problematic nodes.
3Object-generated harmful factors
If interference avoidance measures are implemented, then interference between networks is reduced, but device complexity increases due to subset management
Solution Approach 1:
The patent implements self-service by having wireless devices autonomously determine their subset classification based on channel measurements and interference detection. The access point automatically manages the subset assignments and transmission restrictions without requiring complex centralized coordination, reducing overall system complexity.
Solution Approach 2:
The patent uses feedback mechanisms where wireless devices continuously monitor channel conditions and report interference levels to the access point. This feedback enables the access point to dynamically adjust subset assignments and transmission permissions, achieving effective interference avoidance through adaptive control rather than static complex configurations.
Data Source
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AI summary
This document discloses a solution for reducing interference between wireless networks. According to an aspect, a method comprises: acquiring, by an access node of a first wireless network from at least one node of the first wireless network, information on at least one interfering node of a second wireless network; generating, by the access node, mapping information between the node of the first wireless network and said at least one interfering node; and causing, by the access node, transmission of the mapping information to another access node of the second wireless network.