26-Tone RU Data Modulation for Long-Range Wi-Fi Reliability
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Solution Overview
Problem
Existing wireless communication systems face challenges in achieving enhanced long-range data transmission with improved reliability and reduced signal-to-noise ratio (SNR) while maintaining backward compatibility with existing standards.
Innovation Solution
The proposed solution involves frequency-domain repetition of Resource Units (RUs) with bit masking, cyclic shift diversity, and pilot power boosting, along with specific modulation and coding schemes to enhance signal strength and reliability in extended long-range mode (ELR) for Wi-Fi 8 (IEEE 802.11bn).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency-domain repetition of Resource Units is applied to enhance signal power for long-range transmission, then the received signal power is improved, but the peak-to-average power ratio increases
Solution Approach 1:
The patent applies bit masking (modifying bit patterns) and cyclic shift diversity (changing phase relationships) to the repeated RUs. These parameter changes transform the signal characteristics while maintaining the power-enhancing repetition structure, thereby reducing the harmful PAPR effect while preserving the beneficial signal power improvement for reliable long-range transmission
2Reliability
If pilot power is boosted to enhance carrier frequency offset and phase tracking, then the transmission reliability is improved, but the overall signal complexity increases
Solution Approach 1:
The patent performs preliminary power boosting of pilot signals before the main data transmission. By pre-enhancing the pilot power, the system establishes accurate carrier frequency offset and phase tracking foundations early in the reception process, which simplifies subsequent signal processing and improves overall reliability without adding complex real-time processing requirements
3Adaptability or versatility
If multiple Resource Units with different data are repeated across frequency, then backward compatibility is maintained and frequency diversity is achieved, but the data mapping complexity increases
Solution Approach 1:
The patent segments the data into multiple datasets that are mapped to different subsets of RUs. Each subset is then repeated across frequency domains. This segmentation approach enables backward compatibility with existing Wi-Fi standards while achieving frequency diversity, as each segment can be independently processed and repeated without requiring complete reprocessing of all data
Data Source
AI summary
This disclosure describes systems, methods, and devices related to enhanced data modulation. A device may receive data to be transmitted over a wireless communication channel using a 20 MHz bandwidth and a plurality of 26-tone resource units (RUs). The device may determine a repetition type for the plurality of 26-tone RUs based on a transmission configuration, wherein the repetition type is selected from a first repetition and a second repetition. The device may map the data to the plurality of 26-tone RUs based on the repetition type, wherein the first repetition maps different data sets to subsets of the plurality of 26-tone RUs, each repeated three times, and the second repetition maps identical data across the plurality of 26-tone RUs. The device may transmit the data over the wireless communication channel using the plurality of 26-tone RUs.