Capability-Based Dynamic Spectrum Access for Interference Control
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Solution Overview
Problem
Existing wireless networks face inefficiencies in bandwidth usage due to varying device capabilities and interference from external signaling devices, leading to suboptimal channel allocation and reduced network performance.
Innovation Solution
A method and system that categorize the functionalities of Access Points (APs) and mobile stations (STAs) based on their capabilities for multilink communications and preamble puncturing, and calculate interference impact to dynamically assign network resources, optimizing channel usage based on interference patterns and device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If devices use newer communication standards with additional capabilities, then network performance and bandwidth utilization improve, but compatibility with older devices deteriorates
Solution Approach 1:
The patent implements dynamic capability advertisement where devices dynamically indicate their supported capabilities (such as multilink operation, preamble puncturing) during association. The AP categorizes STAs based on their capabilities and dynamically adjusts resource allocation strategies, switching between different communication modes depending on which devices are connected, thus resolving the contradiction between optimizing for new devices and maintaining compatibility with older ones.
2Productivity
If channel allocation is optimized for specific device capabilities, then bandwidth utilization improves, but network complexity increases
Solution Approach 1:
The patent segments the network into different STA categories based on capabilities (e.g., STAs supporting multilink operation, STAs supporting preamble puncturing, legacy STAs). Each category is managed with specific resource allocation rules. The AP maintains separate capability information for each connected STA and applies different scheduling strategies to different categories, optimizing bandwidth utilization without requiring complex per-device customization.
Solution Approach 2:
The patent changes the parameter of capability advertisement from static (implicit in device specification) to dynamic (explicitly signaled during association). By introducing capability indication parameters that STAs transmit during the association process, the system enables flexible resource allocation based on actual device capabilities while maintaining a relatively simple overall network structure.
3Reliability
If interference mitigation strategies are applied, then network stability improves, but channel availability decreases
Solution Approach 1:
The patent applies interference mitigation locally rather than globally. When interference is detected on specific channels or for specific STA pairs, the system applies targeted solutions such as preamble puncturing for affected STAs while allowing other STAs to use the full channel bandwidth. This localized approach maintains network stability for affected connections without reducing channel availability for the overall network.
Data Source
AI summary
Dynamic spectrum access mode based on station capabilities is provided by categorizing functionalities of Access Points (APs) and stations (STA) in a wireless network; identifying interference induced by external signaling devices on channels in the wireless network; calculating an impact factor of the interference based on proximity of the external signaling devices to the wireless network, a pattern of the external signaling devices, and an extent of overlap with frequencies used by the external signaling devices and the wireless network; and in response to identifying a given STA that is paired with a given AP in the wireless network, wherein the given STA and the given AP are both categorized as being capable of both multilink communications and preamble puncturing, assigning network resources for the given STA to communicate with the given AP via one of multilink communications or preamble puncturing based on the impact factor of the interference.