WLAN Tone Interleaving Across Multi-Band Wide Channels
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Solution Overview
Problem
Existing tone interleaving approaches for WLAN wireless communication are inadequate for wider channel bandwidths and multiple bands, leading to reduced throughput and increased error rates due to burst errors.
Innovation Solution
A method for tone interleaving that divides wireless channels into subcarriers, mapping consecutive complex constellation points to nonadjacent tones using a tone mapping distance parameter, specifically utilizing an 80 MHz channel bandwidth with 996 tones as a building block to implement efficient tone mapping and interleaving schemes for wider bandwidth channels like 240 MHz or 320 MHz, thereby enhancing throughput and mitigating burst errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing tone interleaving approaches are used for wider channel bandwidths, then implementation simplicity is maintained, but throughput is reduced and error rates increase due to burst errors
Solution Approach 1:
The patent segments the wide bandwidth channel into multiple subcarriers (e.g., dividing 320 MHz into multiple 80 MHz subcarriers). Each subcarrier is independently tone-mapped and interleaved, allowing the system to handle wide bandwidths using proven techniques while achieving improved throughput and error performance through the segmented structure
Solution Approach 2:
The patent extends traditional single-carrier tone interleaving into the frequency dimension by introducing multi-subcarrier structures. Consecutive complex constellation points are mapped to nonadjacent tones across multiple subcarriers, adding a dimensional aspect to tone mapping that improves both throughput and error resilience
2Productivity
If wider channel bandwidths are utilized, then throughput is enhanced, but existing tone interleaving approaches cannot effectively mitigate burst errors
Solution Approach 1:
By segmenting the wide bandwidth into multiple subcarriers, the patent isolates burst errors to specific subcarrier segments rather than affecting the entire wide bandwidth channel. This segmentation allows error containment and improves overall transmission reliability while maintaining high throughput
Solution Approach 2:
The patent applies tone mapping and interleaving procedures in advance to distribute constellation points across nonadjacent tones before transmission. This preliminary arrangement ensures that when burst errors occur, the affected bits are already dispersed, enabling more effective error correction
3Adaptability or versatility
If conventional tone mapping is used for multiple bands, then implementation complexity is reduced, but the system cannot take advantage of wider channel bandwidths
Solution Approach 1:
The patent divides wide bandwidth channels into multiple 80 MHz subcarriers, each processed with established tone mapping techniques. This segmentation allows the system to adapt to various bandwidth configurations (240 MHz, 320 MHz, etc.) while maintaining manageable complexity through modular processing of each subcarrier segment
Solution Approach 2:
The patent creates a universal tone mapping framework that works across multiple bandwidth configurations and band combinations. The same fundamental approach can be applied to 240 MHz, 320 MHz, and future wider bandwidths, making the system highly adaptable without requiring separate solutions for each configuration
Data Source
AI summary
Embodiments of the present invention provide a method and apparatus for tone interleaving wide channel bandwidths or transmissions using multiple-bands. Embodiments of the present invention are designed to accommodate new generations of WLAN. According to some embodiments, existing communication standards of the current generations of WLAN are used to simplify the implementation of the tone mapping schemes described herein. For example, some embodiments of the present invention use an 80 MHz channel bandwidth with resource units having 996 tones as a building block to efficiently implement new tone mapping and interleaving schemes for wider bandwidth channels.