Wireless Access Control via Grid-Based Interference Clustering
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Solution Overview
Problem
In miniaturized and dense wireless networks, strong and dynamic interference leads to service interruptions and unbalanced load distribution, affecting network performance and user experience.
Innovation Solution
The method involves grid partitioning to form interference clusters based on neighboring cells, calculating an access offset for each cluster, and sending this offset to users to facilitate informed cell selection, thereby optimizing access control and balancing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless network miniaturization and densification are implemented to increase network capacity, then network capacity is improved, but interference becomes very strong and highly dynamic
Solution Approach 1:
The patent divides the target cell into multiple grids and groups grids with similar interference characteristics into interference clusters. This segmentation allows the system to manage interference at a finer granularity level, applying different access offsets to different clusters rather than treating the entire cell uniformly. This resolves the contradiction by maintaining high network capacity through densification while managing interference locally through grid-based clustering.
Solution Approach 2:
The patent calculates and applies different access offsets to different interference clusters based on their specific interference characteristics. Instead of using a uniform access control parameter across the entire cell, the system tailors the access offset to each cluster's local interference environment. This local quality approach allows the network to maintain high capacity while adapting to varying interference conditions in different spatial regions.
2Ease of operation
If users select wireless access points based on signal strength, then access simplicity is improved, but strong interference causes service interruption and unbalanced load distribution
Solution Approach 1:
The patent introduces access offset as an intermediary parameter that modifies the raw signal strength measurement. Instead of users directly selecting access points based on pure signal strength, the system adds an access offset (calculated based on interference cluster characteristics) to the signal strength metric. This intermediary adjustment guides users toward access points with better overall performance considering both signal strength and interference, thereby improving service quality while maintaining simple user-side operation.
Solution Approach 2:
The system calculates access offsets based on measured interference characteristics and statistical loads of neighboring cells, then feeds this information back to users through the modified cell selection criterion. This feedback mechanism allows the network to dynamically adjust user guidance based on current interference conditions, improving service reliability while keeping the user interface simple (users still just select based on a modified signal metric).
Data Source
AI summary
The present disclosure provides an access control method and apparatus, and a network device. The method includes: performing grid partitioning on a target cell covered by a wireless access point, to obtain multiple grids; grouping, based on a neighboring cell of the target cell, grids that satisfy a preset condition in the multiple grids into one or more interference clusters; calculating an access offset of each of the interference clusters; and sending, to a user in each interference cluster, an access offset of a corresponding interference cluster, so that the user selects a cell based on the access offset of the corresponding interference cluster. Grids of a target cell are grouped into interference clusters according to signal to interference plus noise ratios, and an access offset is set for each interference cluster, to ensure service quality and improve user experience.