Multi-Link Device Channel Selection with Filtering Constraints
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multi-link devices face challenges in optimizing channel selection and operation due to cross-link interference and station device constraints, particularly in simultaneous transmission and reception modes across different frequency bands, which affects communication efficiency and interference management.
Innovation Solution
A method that determines filtering transitional regions and cost metrics for channel assignment, using signal-to-noise ratios and STR/NSTR ratios to assign radios to channels that minimize interference and maximize communication efficiency, enabling multi-link devices to operate in simultaneous transmission and reception modes across multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-link devices operate in simultaneous transmission and reception mode across different frequency bands, then communication efficiency is improved, but cross-link interference increases
Solution Approach 1:
The patent applies local quality by determining filtering transitional regions for each individual MLD device, creating device-specific frequency ranges where energy leakage occurs. This allows the system to tailor channel assignment decisions to the specific filtering characteristics of each device rather than applying a uniform approach, thereby enabling STR mode operation while minimizing cross-link interference for each device.
Solution Approach 2:
The patent changes the parameter of channel assignment by introducing cost metrics that incorporate filtering transitional region information. The access point dynamically adjusts channel assignments based on calculated cost metrics that reflect the potential for cross-link interference, allowing the system to optimize channel selection to minimize interference while maintaining high communication efficiency.
2Object-generated harmful factors
If dynamic channel assignment is used to reduce interference, then channel selection optimization is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by having MLD devices provide their filtering transitional region information to the access point in advance. This allows the access point to pre-calculate cost metrics for multiple channels based on this information, enabling optimized channel assignment decisions without requiring complex real-time interference calculations during channel selection.
Solution Approach 2:
The patent introduces cost metrics as an intermediary that mediates between the filtering transitional region information and channel assignment decisions. Instead of directly complex interference calculations, the system uses these intermediate cost metrics to guide channel assignment, simplifying the decision-making process while still achieving interference reduction.
3Object-generated harmful factors
If filtering transitional regions are determined for each MLD device, then interference management is improved, but information processing requirements increase
Solution Approach 1:
The patent extracts the filtering transitional region information from each MLD device and provides it to the access point. By taking out this specific information from the devices, the system can perform interference management calculations centrally at the access point rather than requiring complex distributed calculations across all devices, reducing overall information processing requirements.
Data Source
AI summary
Techniques are provided for optimizing performance of a multi-link device (MLD). In one embodiment, a controller receives information about a filter response for a first multi-link device (MLD, determines, based on the information about the filter response, a filtering transitional region of the first MLD indicating a range of frequencies where there is energy leakage due to the first MLD device operating in a simultaneous transmission and reception (STR) mode, determines cost metrics for a plurality of channels by identifying a STR and non-STR (NSTR) ratio for each of the plurality of channels, and assigns, based on the filtering transitional region and the cost metrics, a first radio of an access point (AP) to one of the plurality of channels to enable the first MLD to operate in the STR mode when communicating with the first radio.