IEEE 802.11 Carrier Selection for Interference Mitigation
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Solution Overview
Problem
IEEE 802.11 wireless communication devices are limited by their ability to utilize only carriers within assigned or contiguous sub-channels, leading to inefficiencies due to interference across sub-channels, particularly in high-traffic environments like those shared with Radar systems.
Innovation Solution
Implementing a method for IEEE 802.11 devices to search across multiple communication bands, identify candidate carriers based on interference levels, and mitigate interference on a carrier-by-carrier basis, allowing data transmission across the entire available spectrum, including unassigned or low-priority sub-channels, using ultra-wideband tuners and OFDM protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If devices utilize only carriers within assigned or contiguous sub-channels, then compliance with IEEE 802.11 standards is maintained, but network efficiency and data throughput are limited due to inability to access carriers across multiple sub-channels or bands
Solution Approach 1:
The patent segments the spectrum into discrete carriers across multiple sub-channels and communication bands, allowing individual carrier selection rather than requiring contiguous sub-channel blocks. This enables the system to pick optimal carriers from any sub-channel while maintaining standard compliance through structured selection mechanisms.
Solution Approach 2:
The invention transitions from two-dimensional carrier selection (within a single band) to multi-dimensional selection by incorporating multiple communication bands (2.4 GHz, 5 GHz, 60 GHz) and multiple sub-channels simultaneously, creating a three-dimensional carrier selection space that dramatically increases available bandwidth and throughput options.
2Productivity
If devices aggregate multiple sub-channels for simultaneous use, then data throughput increases, but interference management becomes more difficult and reliability decreases in high-traffic environments
Solution Approach 1:
The patent applies local quality by evaluating and selecting carriers based on their individual interference levels and quality metrics rather than treating entire sub-channels uniformly. This allows the system to aggregate only the highest quality carriers while excluding those with high interference, maintaining reliability while maximizing throughput.
Solution Approach 2:
The system continuously monitors interference levels on selected carriers and uses this feedback to dynamically adjust the carrier selection and aggregation strategy. This feedback mechanism allows real-time optimization of throughput while maintaining reliability by removing degraded carriers when interference increases.
3Ease of manufacture
If devices are constrained to contiguous sub-channels, then standard compliance is simplified, but spectrum utilization efficiency decreases when interference prevents use of certain sub-channels
Solution Approach 1:
The patent segments sub-channels into individual carriers, allowing independent selection and use of specific carriers even when adjacent sub-channels are unavailable due to interference. This segmentation enables flexible spectrum utilization while maintaining standard compliance through structured carrier aggregation mechanisms.
Solution Approach 2:
The system can select and aggregate fewer than all available carriers in a sub-channel, using only the partial set that has acceptable interference levels. This partial action approach allows the system to maintain standard compliance while efficiently utilizing only the quality carriers available, rather than being forced to use entire contiguous sub-channels.
Data Source
AI summary
Wireless communication under IEEE 802.11 standards utilizing carrier specific interference mitigation where an AP or UE employs an ultra-wideband tuner to evaluate available spectrum between several communication bands. Rather than being constrained to communicate in a single communication band, the AP and UEs may utilize more than one communication band to communicate with one another. In doing so, the AP and UE search across several bands and measure interference on a carrier-by-carrier basis across those bands. Either of the AP and UE may select a cluster of carriers for communication, where the cluster of carriers may comprise 1) contiguous carriers in a single sub-channel, 2) contiguous carriers spanning across more than one sub-channel, 3) discontinuous carriers in a single sub-channel, or 4) discontinuous carriers spanning across more than one sub-channel. The mapping between a cluster and its carriers can be fixed or reconfigurable.