High-Frequency Tone Mapping for Reliable WLAN Symbol Reordering
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Solution Overview
Problem
The existing tone mappers designed for low frequency bands are not applicable in high frequency band scenarios due to differences in interference and noise, necessitating a redesign for effective communication transmission.
Innovation Solution
A communication method involving a tone mapper that reorders high-frequency constellation mapping symbols and a tone inverse-mapper for sequence restoration, utilizing a preset tone mapper or inverse-mapper set based on specific tone mapping distance parameters, and increasing the quantity of pilot tones in the tone plan to reduce packet error rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the existing low frequency band tone mapper is used for high frequency band communication, then device complexity is reduced, but communication reliability deteriorates due to differences in interference and noise characteristics
Solution Approach 1:
The patent applies parameter changes by introducing a tone mapping distance parameter DTM that adapts to different high frequency band scenarios. By adjusting DTM based on interference and noise characteristics specific to high frequency bands, the tone mapper optimizes constellation symbol mapping without requiring complete redesign, thus maintaining reliability while controlling complexity.
Solution Approach 2:
The patent segments the tone mapping process by separating low frequency band processing from high frequency band specific adjustments. The existing low frequency tone mapper structure is retained and segmented from the high frequency adaptation layer, allowing reuse of proven components while adding targeted improvements for high frequency reliability.
2Reliability
If a proper tone mapper is redesigned for high frequency band scenario, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent achieves universality by designing a tone mapper that can handle both low frequency and high frequency band communications through the introduction of the tone mapping distance parameter DTM. This single unified structure adapts to different frequency bands and scenarios, eliminating the need for completely separate tone mappers for each band and reducing overall system complexity.
Solution Approach 2:
The patent applies dynamics by making the tone mapping distance parameter DTM adjustable and scenario-dependent. Rather than a fixed structure, the tone mapper dynamically adapts DTM based on high frequency band conditions, allowing optimal performance across varying interference and noise environments without requiring multiple static designs.
3Reliability
If the quantity of pilot tones is increased in the tone plan, then communication reliability is improved by reducing packet error rates, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple preset tone mapper options with different DTM values and corresponding pilot tone quantities. The system selects the appropriate preset based on the high frequency band scenario, avoiding the need for complex real-time calculations and reducing implementation complexity while maintaining reliability improvements.
Data Source
AI summary
Embodiments of this application provide a communication method. The method is applied to a wireless local area network system supporting 802.11 series protocols, for example, a next-generation Wi-Fi protocol of IEEE 802.11ax, like 802.11be, Wi-Fi 7, or EHT, or for another example, a next-generation of 802.11be, like Wi-Fi 8, UHR, or Wi-Fi AI, and may be further applied to an ultra-wideband UWB-based wireless personal area network system or a sensing (sensing) system. The method includes: inputting high-frequency constellation mapping symbols into a tone mapper; and recording, by the tone mapper, the high-frequency constellation mapping symbols. For communication transmission in a high frequency band scenario, a proper tone mapper may be designed, and constellation mapping symbols are reordered based on the tone mapper.