Multi-AP Resource Allocation Using Interference-Based Terminal Grouping
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Solution Overview
Problem
In wireless local area networks with multiple access points, interference from non-serving APs reduces data rates due to disordered air interface resource contention, leading to a bottleneck in network performance.
Innovation Solution
A resource allocation method that groups terminals into different target groups based on signal interference thresholds, ensuring non-overlapping time-frequency resources are allocated to minimize interference and maximize data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple APs transmit signals on the same time-frequency resource, then air interface resource utilization increases, but terminal data rate decreases due to interference from non-serving APs
Solution Approach 1:
The patent segments the set of terminals into multiple groups based on their association with different APs and their interference relationships. By dividing terminals into distinct groups, the system can allocate time-frequency resources in a structured manner that reduces interference while maintaining high resource utilization.
Solution Approach 2:
The patent introduces a grouping dimension for resource allocation, moving beyond traditional single-dimension resource assignment. Terminals are first grouped based on interference characteristics, then resources are allocated within each group, creating a multi-dimensional allocation framework that resolves the contradiction between resource utilization and interference mitigation.
2Device complexity
If APs do not collaborate in resource allocation, then system complexity is reduced, but air interface resource utilization decreases due to disordered resource contention
Solution Approach 1:
The patent introduces a coordination mechanism where APs exchange information about their associated terminals and allocate resources in a coordinated manner. This intermediary collaboration layer enables structured resource allocation that improves utilization while maintaining manageable system complexity through standardized interaction protocols.
Data Source
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AI summary
A resource allocation method is provided. The method includes: obtaining first information of a plurality of terminals, where the plurality of terminals are connected to a plurality of access points (access point, AP), and the first information includes signal interference caused to each terminal by a non-connected AP when the terminal is scheduled on a target time-frequency resource; and determining scheduling information based on the first information and the target time-frequency resource, where the scheduling information indicates a time-frequency sub-resource allocated to each terminal, the plurality of terminals are grouped into a plurality of target terminal groups, each terminal and a terminal connected to an AP that causes signal interference greater than a threshold to the terminal belong to different target terminal groups, and time-frequency sub-resources allocated to terminals included in different target terminal groups do not overlap. In this application, the terminal groups are grouped based on signal interference information, so that when receiving and sending data, each terminal device is not subject to signal interference of an AP connected to another terminal device not in a terminal group to which the terminal device belongs. This can further improve data transmission efficiency in a multi-AP collaboration scenario.